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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.

Silicone products can be processed thin, silicone products are a very widely used products, only many fields of industry have applications, but also in life to give people a lot of tools. Silicone products look simple, but the production is also more complex, its process has many kinds, including many kinds of technology, today understand how thin silicone products can be processed.   The production of silicone products is a complex process, but also a deep technical content of the field, from different processes to points, can be divided into molded silicone products, extrusion silicone products and liquid silicone products. Three different processes, the products produced, the use of the environment and characteristics are also very different.   In fact, silicone products are also divided into many kinds, 99% of silicone pads are produced by molding process. However, the molding process also has limitations, and some too thin silicone pads can not be achieved directly on the mold, whether it is liquid vulcanization or solid vulcanization. This too thin silicone mat is generally difficult to produce, under normal circumstances, according to the standards of the mold industry, the thickness of the silicone products below 1.0mm are not very smooth production. Because the self-dismantling of the edge of the mold has reached 1.0mm, if the glue in the middle is thinner than the glue on the side, it is technically impossible to achieve. However, it does not rule out that some silicone products manufacturers do have their own unique production process, which can achieve a thickness of 0.5mm, and some can even achieve a thickness of 0.3mm, which sounds strange.   The production of silicone products, especially the production of some silicone pads, the thickness should not exceed 1.0mm, if you want to do 1.0mm below, then the quality and cost of the product will increase a lot, so it will also increase a lot of intangible costs.

What are the types of silicone raw materials for silicone products? Silicone products have penetrated into all aspects of our lives, from kitchen utensils to medical equipment to electronic products, which are closely related to our daily life. The diversity of silicone products stems from the diversity of its materials, each material has its own unique characteristics and application scenarios, today Xiaobian will take you to understand what types of silicone raw materials of silicone products, let's see.   First, the classification of silicone raw materials   Silica gel raw materials can be divided into different types according to different classification methods. According to the state, silica gel raw materials can be divided into liquid silica gel, solid silica gel and powder silica gel.   Liquid silica gel: liquid silica gel has the characteristics of good fluidity, easy operation, fast vulcanization, etc., suitable for making soft and elastic silicone products.   Solid silica gel: solid silica gel has high hardness, high temperature resistance, corrosion resistance and other characteristics, suitable for the production of hard and durable silica gel products.   Powdered silica gel: powdered silica gel has the characteristics of granular, easy to disperse, easy to operate, etc., suitable for making delicate and smooth silicone products.   Second, the choice of silicone raw materials   The selection of suitable silica gel raw materials is crucial to the production of high quality silica gel products. When choosing silicone raw materials, the following factors need to be considered:   Performance: According to the use environment and requirements of the product, select the silicone raw materials with corresponding properties. For example, for products that need high temperature resistance, high temperature resistant silica gel raw materials should be selected.   Quality: Select silica gel raw materials with stable quality to ensure that the products produced have consistent performance and quality.   Cost: According to the requirements of the product and cost budget, choose reasonable price silica gel raw materials.

Silicone products are easy to absorb impurities such as dust and fine hair under normal circumstances. Therefore, in the production and manufacturing process, the silicone products factory will spray a thin layer of feel oil on the surface of the silicone products, which can prevent dust and ensure the feel. Oil injection is divided into three different processes, there are spray color oil, spray extinction (feel oil), spray PU.   For example, silicone forms, silicone bracelets, silicone mobile phone cases and other products generally need to spray feel oil.   Advantages of silicone products spray feel oil:   1, it can increase the smoothness of the surface of the silicone product, feel delicate, and eliminate the astringent feeling of the silicone after molding.   2, silicone products in the rubber refining and molding process is easy to electrostatic products, so that it is easy to absorb dust, spray a layer of feel oil can reduce static electricity.   3, feel oil has the effect of friction resistance, wear resistance, so that the service life of silicone products is longer.   The surface effects of feel oil are: frosted feel oil; Fog surface feel oil; Bright face feel oil; There are ordinary type and high wear resistance type; There are high temperature curing and low temperature curing; Spray feel oil and screen feel oil. Customers need to choose which process they need according to the use of their products.   Silicone products spray feel oil can increase the smoothness of the surface of silicone products, can reduce static electricity, can make the service life of silicone products longer.

Silicone products will not fade, silicone products with its unique softness, water resistance and aging resistance, in daily life and industrial production has been widely used. However, many consumers in the use of silicone products, will be concerned about a problem: silicone products will not fade, silicone products fading phenomenon is a complex problem, today to take you to understand the silicone products will not fade.   First, the reasons for fading of silicone products There are many reasons for the fading of silicone products, mainly including the following aspects: Light effects: Long-term exposure to ultraviolet light may damage the pigment molecules in silicone products, resulting in a lighter or fading color. Oxidation: Silica gel products react with oxygen in the air during use, resulting in surface oxidation, which leads to color changes. Temperature effect: Under high temperature environment, the molecular structure of silicone products may change, thus affecting its color stability. Chemical erosion: Certain chemicals may react with silicone products, causing color changes or fading.   Second, the method to prevent the fading of silicone products In order to extend the service life of silicone products and maintain their beauty, we can take the following measures to prevent fading: Avoid prolonged exposure to the sun: try to place silicone products in places that avoid direct sunlight, or use items such as sunshades to cover them. Keep clean: Clean silicone products regularly to avoid the accumulation of stains and dust to keep their surface clean and shiny. Avoid contact with chemical substances: try to avoid contact with strong acids, strong alkalis and other chemical substances of silicone products, so as not to cause chemical reactions to fade. Choose high quality silicone products: Choose reliable quality and brand guaranteed silicone products when purchasing to ensure that it has good fading resistance.