China Xiamen Juguangli Import & Export Co., Ltd Company News

Flame retardant adhesive is mainly used for the border joints of all kinds of fire doors and Windows; Require flame-retardant pipes and cables between walls and floors; Flame-retardant sealing of all layers of curtain wall engineering; Hotels, hotels, theaters, all kinds of elevators and require the laying of fire equipment, pipelines and other public places flame retardant seal. Flame retardant sealing of all kinds of door and window glass. Glass, marble, aluminum plate and other curtain wall sealing. Electronic, electrical component fixing and flame retardant sealing and other flame retardant sealing applications.  

Silicone products punching processing should pay attention to what, silicone products are a very common product type, there is a large part of the world people will use silicone products. Silicone products are produced by professional silicone products manufacturers, and silicone products manufacturers will turn raw materials into silicone products through a series of processes. In the production of silicone products, there is a processing is punching.   Metal die processing is currently a more common process, is widely used in a number of industries, for the current electronic chip integrated materials and precision metal sheet it is indispensable, and in addition to these, for the rubber and plastic industry die-cutting process can also be widely used, In the production process, there are great advantages in terms of product quality and efficiency. At present, many silicone rubber plugs and silicone foot pads and ultra-thin sheet products will choose the punching process, its main advantage is to take a certain degree of precision and processing efficiency, mainly used in solid die molding process, usually the use of punching process products need to pay attention to efficiency, and efficiency is continuous punching through the stamping press. The main processing method of the product is to cut the silicone plug from the raw edge of the main body through a sharp blade. In the early stage, it is necessary to pay attention to the processing method of the mold. Generally, the self-cutting edge of the silicone product mold is increased, but the punching position is reserved. If the mold is not processed in accordance with the punching method in the early stage, then the orderly slicing effect will not be achieved. Silicone products die cutting processing precautions: 1. Put the whole piece of the silicone product into the punching mold. The upper and lower dies of the mold are divided into automatic and manual punching. Usually, the higher precision and the higher pressure punching machine will have better product quality. 2, in the punching process according to the structure of the product to determine its quality, if it is only a flat gasket class, then the punching accuracy is basically not affected, but if there is a circular arc or reverse occlusion part, then the placement is not standard is easy to cause punching offset phenomenon. 3, the quality of the punching die is very important, usually the punching die mainly relies on the sharp edge of the surface, if the knife edge is damaged by the collision, then the product cut out will naturally be affected, and the material is different will also have an impact on the life of the punching die, usually can use copper die, aluminum die and steel die, if the number of processing is large, it is recommended to use large punching machine processing is better. 4, the position of the die machine is very important, usually need to carry out a long time correction adjustment during the sample, if only a single punching is relatively thin silicone rubber products, then the impact will not be very large, if you need two punching more than two times, then you need to pay attention to the pressure of the mold and the precision of the fixture fixed.

Silicone products how to improve the hardness, silicone products because of its excellent elasticity, water resistance and aging resistance, has been widely used in many fields. However, with the continuous expansion of the use of scenarios, the hardness requirements of silicone products are becoming higher and higher. Silicone products manufacturers have a process to improve the hardness of silicone products, so how to improve the hardness of silicone products.   First, the influencing factors of the hardness of silicone products The hardness of silica gel products is affected by many factors, including the choice of silica gel raw materials, the type and amount of vulcanization agent, and the control of vulcanization process. Therefore, to improve the hardness of silicone products, we first need to start with these factors and conduct in-depth research and analysis. Second, the method of improving the hardness of silicone products 1. Choose the right silicone raw materials The properties of silica gel raw materials have a direct impact on the hardness of products. In general, the hardness of products made of silica gel raw materials with higher hardness will also increase accordingly. Therefore, when purchasing silica gel raw materials, the varieties with higher hardness should be selected according to actual needs. 2. Adjust the type and dosage of vulcanizing agent Vulcanizing agent is one of the important factors affecting the hardness of silica gel products. Different types of vulcanizing agents have different effects on the vulcanization rate and hardness development of silica gel. By adjusting the type and dosage of vulcanizing agent, the hardness of silicone products can be effectively improved. It should be noted that the amount of curing agent is not the more the better, excessive use may cause the product hardness is too high and lose elasticity. 3. Optimize the vulcanization process Vulcanization process is the key link in the production of silica gel products. Reasonable vulcanization temperature, time and pressure and other parameters are helpful to achieve the uniformity and stability of the hardness of silicone products. Therefore, in the production process, the vulcanization process should be continuously optimized to improve the hardness of the product. 4. Add hardness enhancer Adding hardness enhancers, such as calcium carbonate, silica black and other inorganic fillers, can effectively improve the hardness of silica gel products. These fillers play a skeleton role in the silicone matrix and increase the rigidity of the product. However, it should be noted that the amount of filler added should be moderate, too much may lead to a decline in product performance. 5. Improve product structure design The structural design of the product also affects its hardness. By optimizing the structure of the product, such as increasing the wall thickness, changing the cross-section shape, etc., the hardness of the silicone product can be improved to a certain extent. In addition, reinforcing bars or other reinforcing structures can be added to the key parts of the product to improve the overall hardness of the product.

How many degrees of high temperature resistance silicone products, silicone products because of its unique physical and chemical properties, in many fields have been widely used. Among them, high temperature resistance is one of the important characteristics of silicone products, which directly determines its use effect in high temperature environment. So, how many degrees can silicone products withstand high temperature?   First of all, we need to understand the basic properties of silicone. Silica gel is a highly active adsorption material, belongs to the amorphous substance, insoluble in water and any solvent, non-toxic and tasteless, chemical stability. This stability allows the silica gel to maintain its original structure and properties at high temperatures.   However, the high temperature resistance of silicone products is not unchanged, it is affected by a variety of factors. The type of silica gel, the production process, the use of additives and other factors will affect the high temperature resistance of silica gel products. In general, ordinary silicone products can withstand higher temperatures, usually around 200 ° C. However, some special processes made of silicone products, its high temperature resistance may be higher, and even can reach more than 300 ° C.   In addition, we also need to note that although silicone products have high temperature resistance, some problems still need to be paid attention to in practical applications. First of all, the long-term high temperature effect may lead to the aging and performance decline of silicone products, so it is necessary to avoid long-term exposure to high temperature environments during use. Secondly, the high temperature resistance of different kinds of silicone products will also be different, so it is necessary to understand the specific high temperature resistance range before use.   In general, the high temperature resistance of silicone products depends on a variety of factors, in general, ordinary silicone products can withstand high temperatures of about 200 ° C, and silicone products made of special processes may have higher high temperature resistance. However, it is still necessary to pay attention to avoid long-term high temperature action during use, and rational use according to the high temperature resistance range of the specific product.

What are the surface treatment processes of silicone products? Silicone products are a very popular product, silicone products have excellent performance and are applied in many fields. Many silicone products have a delicate appearance, which also benefits from the surface treatment process of silicone products.   1, pad printing process: Silicone products printing process is a relatively early surface treatment process, it is suitable for silicone, rubber and plastic hardware and other materials of the printing process, mainly using printing ink through the plastic head mechanical printing, in the early stage mainly using the screen plate for artificial wall chart, and has been basically eliminated, currently with the upgrade of machine equipment, Mechanical printing has developed to multi-color printing and printing multiple colors at the same time through the glue head. The printing effect belongs to the plane, the surface has about 0.05MM printing steps, and the hand will feel a slight step bump effect.   2, molding: Silicone jewelry surface molding is easy, usually can also be directly made on the surface of the product, the product mold surface through the silicone products manufacturers processing concave and convex groove, directly put the silicone material into the mold pressing and curing molding products have concave and convex effect, usually many decorations are made into grooves, can be secondary filling oil processing, Add other colors of silicone ink to the grooves to make the surface of the product an additional pigment. In addition to this way, it can also be molded twice to inject other colors into the surface, this way is not difficult, mainly because the other color K pieces must be put into the mold cavity in the filling processing, the resulting product will naturally be combined with color K to achieve multi-color effect, the difficulty lies in the process of dispensing glue and production efficiency.   3, silicone drop glue, drop glue is currently the most popular process in silicone decorative supplies, mainly through the mold injection into the face of the mold cavity, through the color allocation of color glue can be made at the same time more than a dozen colors, and the effect of the production of glue products will have a certain three-dimensional effect, touch the product can be in the middle of the mold line there will be a color separation slot, the size of about 0.5mm, The product effect made by this process has been recognized by many consumers, and it is also widely used in silicone decorative bracelets and watchbands.   4, transfer: transfer process is divided into many types, in the general film industry there are basically transfer process, such as hardware, ceramics, plastics and other industries, and silicone transfer there are mainly several ways. Heat transfer printing is a more common processing of silicone bracelet, it is mainly printed pattern through high temperature PET polyester film that is printed into a heat transfer flower film, the heat transfer flower film installed on the heat transfer hot stamping machine for printing, simple operation, pattern molding, no need to color. And when some products can not use heat transfer, it is necessary to use the water transfer process, water transfer with special chemical treatment of the film, after printing the required color lines, flat to the surface of the water, the use of water pressure, the color pattern evenly transferred to the surface of the silicone product, when the coating is automatically dissolved in water, after cleaning and drying, and then a layer of transparent protective coating, By this time the product has presented a completely different visual effect. In addition to the above two transfer processes, silicone products are currently more common is the in-mold transfer effect, this way is the same as thermal transfer, the product pattern effect directly into the PET film production, through the mold design structure of the product for alignment molding, and the main technical control of this process is the open mold structure and the film plate alignment screen position. If the screen version is not strictly aligned, the resulting product will cause the overall offset.

With the development of industrial production and scientific skills, we continue to make new requests for conductive silica gel data. In the field of electronic and electrical appliances, because of the rapid development of integration skills and assembly skills, electronic components, logic circuits to light, thin, small direction, heat is also added, and then the need for high thermal insulation data, useful to remove the heat generated by electronic equipment, which is related to the service life of the product and the reliability of quality. The traditional way to deal with the heat dissipation of electronic equipment is to pad a layer of insulating medium between the heating body and the heat dissipation body as thermal conductivity data, such as mica, polytetrafluoroethylene and beryllium oxide ceramics, etc., this method has a certain effect, but there are poor thermal conductivity, low mechanical function, and advanced defects. At present, some of the heat dissipation of electronic equipment is processed by various forms of heat sinks, but most of them are necessary to be processed by thermal conductivity data, and thermal silica gel data is the most important member of thermal conductivity data. In this paper, the application of thermal paste and thermal silicone sheet to provide heat conduction treatment for electronic equipment is proposed. Thermal conductive silicone rubber material is a typical polymer composite material, its thermal conductivity function is mainly determined by the type of thermal conductive filler and the dispersion of thermal conductive filler in the silicone rubber matrix, thermal conductive filler is divided into metal filler and inorganic non-metallic filler, the thermal conductivity mechanism of various fillers is not the same, and the resolution of the difference between thermal conductivity or thermal conductivity. Thermal conductive paste is a mechanical mixture of silicone oil and thermal conductive filler. It has the characteristics of setting at any time, high thermal conductivity, non-curing and no corrosion to interface data. In electronic equipment, there are many contact surfaces and installation surfaces between various electronic components, there is a gap between them, resulting in poor warm flow, in order to deal with this problem, usually fill the thermal paste between the contact surface, use the activity of the thermal paste to sweep the air between the interface, drop or even eliminate thermal resistance.   Thermal silicone sheet is a sheet of thermal insulating silicone rubber processed by a special production process. It has the characteristics of natural viscosity, high thermal conductivity, high compressibility, high cushioning and so on. It is mainly used in the gap filling data of heating equipment and heat sink and casing, because of its soft material and elastic variable under the effect of low pressure force. It can touch the surface of the equipment even for the rough surface structure, reduce the air thermal impedance, and excellent treatment of thermal conductive silicon paste after high temperature silicone oil seepage, dust accumulation on the surface and other defects.

In life, there are many kinds of glass, and its use is also more extensive, such as tempered glass, quartz glass, optical glass and other glass types that are common in our life, and then we will understand what quality requirements optical glass has?   Glass that can change the direction of light propagation and change the relative spectral distribution of ultraviolet, visible or infrared light. The narrow sense of optical glass refers to colorless optical glass, and the broad sense of optical glass also includes colored optical glass, laser glass, quartz optical glass, anti-radiation glass, ultraviolet infrared optical glass, fiber optical glass, acousto-optic glass, magneto-optical glass and photochromic glass. Optical glass can be used to manufacture lenses, prisms, mirrors and Windows in optical instruments. Components made of optical glass are key components in optical instruments.   1, the specific optical constant and the consistency of the optical constant of the same batch of glass Each type of optical glass has a specified standard refractive index value for different wavelengths of light, which is used as the basis for optical designers to design optical systems. Therefore, the optical constant of the optical glass produced by the factory must be within a certain allowable deviation range of these values, otherwise the actual image quality will not be consistent with the expected results at the time of design and affect the quality of the optical instrument. At the same time, because the same batch of instruments are often made of the same batch of optical glass, in order to facilitate the unified calibration of the instrument, the allowable deviation of the refractive index of the same batch of glass is more stringent than their deviation from the standard value.   2. High degree of transparency The brightness of the optical system image is proportional to the transparency of the glass. The transparency of optical glass to a certain wavelength of light is expressed by the optical absorption coefficient Kλ. After light passes through a series of prisms and lenses, part of its energy is lost by reflection at the interface of the optical part and the other part is absorbed by the medium (glass) itself. The former increases with the increase of the refractive index of the glass, and this value is very large for high refractive index glass, such as a surface light reflection loss of about 6% for heavy flintlock glass. Therefore, for the optical system containing multiple thin lenses, the main way to improve the transmittance is to reduce the reflection loss of the lens surface, such as coating the surface anti-reflection film. For large-size optical parts such as the objective lens of an astronomical telescope, due to its large thickness, the transmittance of the optical system is mainly determined by the light absorption coefficient of the glass itself. By improving the purity of the glass raw material and preventing any coloring impurities from mixing in the entire process from mixing to melting, it is generally possible to make the light absorption coefficient of the glass less than 0.01(that is, the light transmittance of the glass with a thickness of 1 cm is greater than 99%).

What is the difference between silicone products and rubber products? Silicone products and rubber products play an important role in our daily life, and they each have unique characteristics and uses. Although both are elastic materials, there are obvious differences in composition, properties, uses and production processes.   First of all, from the perspective of composition, silicone products are mainly made of porous solid polymer materials obtained after drying and dehydration of silicone gel, and its main component is silicon dioxide. Rubber products are made of natural rubber or synthetic rubber through processing, and its main component is rubber hydrocarbon. This difference in composition makes the two different in physical and chemical properties. Secondly, silicone products and rubber products have obvious differences in physical properties. Silica gel has better stability, weather resistance and high and low temperature resistance, and can be used for a long time in the range of -60 ° C to 250 ° C. In addition, silica gel also has excellent electrical insulation properties and chemical stability, and is not easily affected by the environment. Rubber has good elasticity and wear resistance, but in high or low temperature environments, its performance may be affected. In terms of use, silicone products are widely used in medical treatment, baby bottles, pacifiers, high voltage wire skin and other fields because of its excellent performance. For example, medical silicone products are non-toxic and tasteless, chemically stable, and have good histocompatibility with the human body, so they are widely used in the production of medical devices and implants. Rubber products are widely used in tires, seals, soles and other fields because of their good elasticity and wear resistance. Finally, from the production process point of view, there are also differences in the manufacturing process of silicone products and rubber products. The production process of silicone products usually includes raw material mixing, molding, curing, post-treatment and other steps, of which the curing process can be achieved by vulcanization or hot pressing. The production process of rubber products may involve more processes, such as rubber mixing, calendering, molding, vulcanization, etc.   In summary, there are significant differences between silicone products and rubber products in terms of composition, properties, uses and production processes. Understanding these differences helps us to better select and use these two materials to meet the needs of different fields.

In many industries, rubber components play a vital safety role in everyday activities. For this, rubber components need to be durable. Although in many cases, rubber components have many ways to fail during use, mechanical fatigue is probably the most common failure mechanism, affecting almost all rubber-related components. In the future, we will also explore solutions for other failure mechanisms, such as wear and chips, chemical erosion, expansion and inelastic failures.   When it comes to mechanical fatigue, we are concerned with the long-term performance and service life of rubber components subjected to repeated mechanical loading and unloading cycles. Conveyors, synchronous conveyor belts, different tire components, AV bases require repeated mechanical cycles when working.   Rubber mechanical fatigue begins with homogeneous fracture (precursor to fracture) in rubber composites. Then, the cracks in the rubber body continue to increase, leading to catastrophic failures as the loading cycle progresses. Based on this failure mechanism, we need to consider two aspects, one is fracture nucleation (i.e. the uniformity of the composite) and the inherent fatigue crack propagation resistance. Rubber selection The selection of suitable rubber is the most important for mechanical fatigue performance. Natural rubber is an excellent choice for crack and tear resistant composites. Its crystallization ability under strain leads to automatic strengthening of the crack tip. This mechanism prevents and passivates cracks during cyclic relaxation and non relaxation deformation. Of course, natural rubber is not suitable for all applications. Specific synthetic rubber is required for high-temperature operations or harsh chemical conditions. Compared to natural rubber, the strain crystallization performance of most synthetic rubbers is not outstanding. On the contrary, synthetic rubber relies entirely on particle strengthening operations to achieve the required crack propagation and tear resistance.   Selection of reinforcing agents Reinforcing agents such as carbon black play a crucial role in determining the crack propagation and tear resistance of rubber components. The key lies in selecting the correct load level, surface area and structural layer of carbon black. The selected carbon black needs to exhibit good dispersibility and minimal physical impurities during the composite mixing process, in order to achieve further improvement. The same factors need to be considered when selecting other granular formulations. Filler aggregates and impurities in raw materials can lead to an increase in the size and quantity of crack precursors in the composite, both of which can have adverse effects on fatigue life. The characteristics of mechanical fatigue In fact, the failure of rubber components is rarely consistent with fast, inexpensive, and widespread rubber experimental testing, which is a common phenomenon in our industry. Relatively simple tests, such as tensile failure or tear testing, cannot fully understand and design the fatigue performance of rubber composites. Fortunately, at Bora Carbon Black, we have advanced equipment that can study and explain mechanical fatigue mechanisms, and link them with actual rubber synthesis. This type of equipment includes high-throughput fatigue crack propagation equipment or crack nucleation testing related to fracture mechanics, as well as world-class miniaturization equipment. Carbon black in natural rubber can reduce the displacement level required for strain crystallization by increasing the local strain in the rubber matrix. This essentially enhances the self strengthening ability of natural rubber. Carbon black integrates excess energy consumption mechanisms into rubber composites, which is also one of the main reasons for the increase in tear strength and crack resistance of rubber with added carbon black compared to rubber without added carbon black. To cause the filling rubber to fracture, more external force needs to be applied to compensate for the energy consumed by carbon black in the viscoelastic processing area before reaching the crack tip. This is particularly important for amorphous rubber.

Silicone bowl and porcelain bowl which is better? With the improvement of people's living standards, more and more families begin to use ceramic bowls. However, for some reasons, many friends will consider ceramic bowls before buying silicone bowls. Which is better, the silicone bowl or the China bowl?   Silicone bowl is a new type of polymer material, with non-toxic and tasteless, high and low temperature resistance, anti-aging, non-stick oil and other characteristics, and its price is cheaper than porcelain, so it is loved by people.   1, the material is different: the raw material of silicone tableware is food-grade silicone, while the ceramic tableware is made of natural minerals, such as kaolin, feldspar, etc. These raw materials will generate some harmful substances to the human body during the firing process, such as lead, cadmium, mercury, etc., so from the perspective of environmental protection, it is better to use ceramic.   2, the use of different: silicone tableware is mainly suitable for the catering industry, such as hotels, restaurants, canteenagers, schools, factories, hospitals, organs and units, and ceramic tableware is mainly used for family, personal use, because the ceramic is smooth, easy to clean, not easy to hide dirt, will not breed bacteria.   3, service life: silicone rubber is a thermoplastic plastic, the general temperature can be repeatedly heated, therefore, its service life is relatively long; The porcelain, high temperature burning, heat resistance, fragile, if encountered bump, it is easy to damage, thus affecting the normal use, in addition, the life of porcelain is generally in decades, or even hundreds of years, but with the passage of time, it will slowly become old, lose the original luster.   In summary, we can see that although both are high temperature resistance, corrosion resistance, but silicon rubber has better environmental protection, more suitable for kitchen use, at the same time, it also has a longer service life, therefore, for ordinary families, or choose to use silicon rubber instead of porcelain, both convenient life, but also save a lot of expenses.   The raw material of ceramic tableware is mainly kaolin, which is a viscous substance. It is composed of a variety of minerals, such as quartz, feldspar, etc., and has good plasticity and can be made into various shapes.   The main component of silicone tableware is silicon dioxide, which is chemically very stable and is not easy to be damaged by acid, alkali or high temperature. The surface of different hardness porcelain is smooth, and the surface of glass is rough, so the two are less likely to scratch, and scratch resistant, not easy to break. Different porcelain and glass have a certain degree of sealing, but their sealing is not as good as silicone rubber.   Silicone products have high elasticity, and have good oil resistance and water resistance, and will not harden due to long-term use. Therefore, products made with silicone do not require any special treatment. Environmental performance Different traditional porcelain contains lead, cadmium and other harmful substances. These heavy metals do great harm to the human body. If you use such products for a long time, it will cause harm to the body. Silicone tableware does not contain any toxic substances, non-toxic, pollution-free, safe and hygienic.   Ordinary porcelain has a short life, especially glass, which is easily broken during use. Silicone is much harder than metal. Even if accidentally dropped on the ground, it will not be damaged. Ordinary tiles, especially glass, are prone to leakage. Silicone products are not only waterproof, but also moisture-proof, even in wet places, there will be no deformation, cracking.