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

Doors and Windows sealing strips are mainly used in aluminum alloy doors and Windows, plastic steel doors and Windows, wood doors and Windows and other architectural decorative doors and Windows. Door and window seals on the market. It is generally made of PVC, modified PVC, EPDM, elastomer seal (including TPV, TPE, TPR, SEBS), silicone and other materials. Doors and Windows sealing strips can be used in a variety of plastic steel doors and Windows and broken bridge aluminum doors and Windows, as well as some wood doors and Windows, can play an important role in fire prevention, wind proof, waterproof, dustproof, energy saving, sound insulation, anti-freezing, sealing, warm. 1.Rubber material Doors and Windows sealing strip rubber material windproof effect is relatively good processing is relatively simple, its color is rich consumers can freely choose to use the probability of high although the rubber material has some taste, but its elasticity and durability and windproof is very good. 2.Silicone material Silicone material doors and Windows sealing strip is better, it belongs to a kind of new sealing material, not only the heat resistance is particularly good, but also its elasticity is very good, plasticity is also very good for a wide range of application. 3.PVC material PVC material stability and wind performance is very good, the use of a long time will not appear yellow phenomenon, become the representative of the classic material.  

Before silicone kitchenware mildew phenomenon, we should first find the problem of mold to prevent it. In addition to the influence of climate, the main cause of mold also includes some additives in silicone raw materials, such as silicone oil, color powder, curing agent, etc., which are the main nutritional components of these molds. Mold growth causes the plant protein carbohydrates in the silicone rubber to be eroded. In addition, due to the electrostatic action of silicone rubber's inert rubber, impurities in the air are adsorbed on the surface of the product, which can also lead to mold growth. General silicone products manufacturers should consider these factors, so the mildew phenomenon in silicone kitchenware, in addition to raw material factors, mainly depends on their own control, silicone kitchenware can be kept in a ventilated place to keep clean after cleaning, silicone products after cleaning, according to the difference in temperature and humidity, choose to dry 1-2 hours, in order to facilitate the gap dry, will not cause mildew. After mold, you can wipe with alcohol. If it is difficult to solve several methods, can be treated with mildew. Anti-mold agent should have high thermal stability. Good weather resistance low volatility and good material compatibility characteristics. Also, you should choose a safer variety for the human body.

Oil injection is softener, viscosifier, lubricant, plasticizer and other liquid compound separated in the rubber surface, and form a layer of oil. In practice, the way the rubber is sprayed is sometimes presented in one way, and sometimes in two or three ways together. (1) Improper formula planning: Full ejection: commonly seen in sulfur, accelerator, active agent, antioxidant relocation ejection: commonly seen in processing AIDS, relocation antioxidant. Antistatic agent generation ejection: often seen in sulfur vulcanization system accelerator and reaction product reaction stay: often seen in organic peroxide vulcanization system low molecular material excessive stress ejection: often seen in inorganic filler: such as calcium carbonate. (2) Improper technical operation (3) The quality of raw materials is shaken because of different raw materials of origin, different manufacturing methods, different technologies, different batches of raw materials are very different (4) poor storage conditions temperature: the solubility of the compound in rubber is usually followed by the rise and fall of temperature (5) The aging of rubber mostly causes damage to the balanced network structure of vulcanized rubber intact, and then also damages the rubber system of various complexes and raw rubber molecules and the chemical or physical relationship between the complex, reducing the solubility of the complex in the rubber system. As a result, those parts in the full condition of the compound will be separated from the rubber free, forming the spray cream.

The color adjustment of silicone products is very important in the production. For the color adjustment and color matching work, the operator needs to have keen color vision and rich operating experience. In the whole process of color mixing, follow the principle of light and dark, and flexibly use a variety of color masters in the process of color mixing. The color matching in the color matching box of silicone products is two different color concepts. The color matching is that we first have the target color, and then according to our own experience to match the color, the color matching of various color masters in proportion, and then match the products close to the target color. The color matching is to adjust the existing color to the products close to the target color. The color operation between two people must be based on the change of color to do lag, and different colors need to be formulated from the beginning and refreshing color change, for the silica gel product color box color work is to facilitate the operator has rich operating experience and good color resolution ability, by its flexible use according to the understanding of a variety of color master. In addition, the whole process of color matching must be based on the slow conversion from light to dark, and each time of color matching and blending requires corresponding recorded data. It is necessary to know that sometimes the data is accurate, and record the lecher component until the actual color is close to the target color, it is also necessary to summarize the good formula of color matching and blending and record it to facilitate the accumulation of effective data next time. Shorten the time of color matching. Silicone products in the process of color mixing should pay attention to each other's achromatic application, the so-called achromatic is the use of two kinds of dyeing each other subtractive characteristics, such as a kind of blue with red light, if the red light is too heavy products are not qualified, can add a small amount.

For industrial manufacturing industry, every product has bad probability in the manufacturing process, silicone rubber molding process is no exception. In the process of production and processing, products are often due to the technology is not in place, equipment conditions do not match, affected by geographical environment and other different factors. However, there are too many bad factors in solid silica gel molding process. In order to control its quality, besides the technical level, other methods must be paid attention to. Human, machine, material, environment and hair are the core characteristics of solid silicone rubber products industry. Every silicone rubber manufacturer will control defective products through these aspects, such as personnel operation, machine parameters, material quality, environmental impact, method use, etc. And each method will have some effect on different products. Product inflation is the most common phenomenon. Encapsulation is also called internal encapsulation and external encapsulation. In the process of mold closing, the air in the mold cavity remains in the center of the product and is difficult to discharge. After molding, due to the low density of silica gel, it is difficult to overflow from the silica gel, resulting in bulging phenomenon. After forming the surface of small bubbles, resulting in local immature phenomenon. There are many reasons for this undesirable phenomenon, among which the exhaust and vulcanization time of the machine are the main factors. Generally, this adverse phenomenon may appear in any product, so the edge explosion mainly occurs in some products centered on the parting line, different hardness and structure may cause the edge explosion. The main factor causing this problem is that the feed groove in the mold is too small, resulting in the air in the mold cavity can not be discharged, and the air outlet can only be found from the parting position, resulting in the phenomenon of silica gel products bursting up and down. At present, it is easy to appear in a lot of heavy silica gel articles and products with low hardness. The control method is to start from the mold as much as possible. It is the main factor of the appearance of silicone rubber products. Many consumers come because of its appearance, so the appearance quality and the effect of the mold surface must be exquisite. In the silicone industry, the main adverse phenomenon of surface appearance is that black spots are the majority of impurities. For products with obvious colors, it is easier to expose their appearance quality stars. Appearance has a certain impact on the environment, which is closely related to the cleanliness of workshops, machines and materials. So the star in all aspects of the environment, more can reflect its quality! Finally, poor functionality. Many silicone seals and silicone decorative accessories require significant structure and hardness to support their function. For example, the hardness does not meet the requirements, the product function does not meet the requirements, the structure has problems, the sealing and assembly of the product is not in place, the appearance and function is poor. This factor requires silicone rubber product manufacturers to combine the actual function of the product in the early proofing proofing, hardness and structure evaluation is OK before opening the mold production.  

Silicone rubber refers to the main chain is composed of silicon and oxygen atoms alternately, silicon atoms are usually connected with two organic groups of rubber. Its molecular chain is composed of silicon atoms and oxygen atoms alternately (-SL-O-SL -), silicon oxygen bond energy is much larger than the general rubber carbon-carbon bond bond energy, which is one of the main reasons for the high thermal stability of silicone rubber. Ordinary silicone rubber consists mainly of a silico-oxygen chain with methyl and a small amount of vinyl. The introduction of phenyl can improve the high and low temperature resistance of silicone rubber, and the introduction of trifluoropropyl and cyanide can improve the temperature and oil resistance of silicone rubber. Silicone rubber has good low temperature resistance and can still work at -55℃. After the introduction of phenyl, -73℃ can be reached. Silicone rubber has good air permeability and oxygen permeability is the highest in synthetic polymers. In addition, silicone rubber also has the outstanding characteristics of physiological inertia, will not cause clotting, so it is widely used in the medical field. (1) High and low temperature heat resistance The temperature resistance of silicone rubber is very good, and the temperature range of silicone products is the widest (-100~350C). For example, properly matched vinyl silicone rubber or low phenyl silicone rubber can remain elastic after hot air aging at 250C for thousands of hours or 30OC for hundreds of hours; Low phenyl silicone rubber vulcanized rubber can remain elastic after tens of hours of hot air aging at 350C; Its glass transition temperature is -140℃C, and its vulcanized rubber is still elastic at the temperature of -70~100C. Silicone rubber can withstand instantaneous high temperature of thousands of degrees when it is used as thermal protection coating on the inner wall of rocket nozzle. Continuous service life of silicone rubber at high temperature. (2) Ozone aging resistance, oxygen aging resistance, light aging resistance and weather aging resistance The properties of silicone rubber vulcanizate have no significant change after being exposed to sunlight for several years in free state. Comparison of ozone aging resistance of silicone rubber and other rubber. (3) electrical insulation performance The electrical insulation performance of silicone rubber vulcanized rubber changes little when exposed to moisture, frequency changes or temperature increases. The silica generated after combustion is still an insulator. In addition, the molecular structure of silicone rubber has fewer carbon atoms; And do not use carbon black as filler, so in the arc discharge is not easy to char, in high pressure occasions is very reliable. Its corona resistance and arc resistance is excellent, corona resistance life is 1000 times of PTFE, arc resistance life is 20 times of fluorine rubber. (4) Special surface properties and physiological inertia The surface of silicone rubber is smaller than most organic materials, with low moisture absorption, long-term immersion in water water absorption rate is only about 1%, physical properties do not decline, good mildew resistance, and many materials do not bond, can play an isolation role. Silicone rubber tasteless, non-toxic, no adverse effects on the human body, and the body tissue reaction is slight, has excellent physiological inertia and physiological aging. (5) High permeability Compared with other polymer materials, silicone rubber has good permeability, and the permeability of nitrogen, oxygen and air at room temperature is 30~40 times higher than that of NR. It is selective to gas permeation, for example, the permeability of carbon dioxide is about 5 times that of oxygen. (6) Biomedical performance The properties of the molecular structure of silicone rubber make it have excellent biomedical properties. Silicone rubber is also widely used in the medical field. The most common is the successful application of silicone rubber medical tubes in a large number of animal and human tests.  

Electronic door valve and other sealing materials without silica gel. In all walks of life, silicone sealing products have become one of the essential sealing products in the industry. So now many products have a certain threshold for their waterproof level. If they don't deliver, they won't be accepted by the market. The awareness of waterproofing of machinery and automobile products is becoming more and more strong, and the further requirements of environmental protection are also put forward. So waterproof silicone ring is one of the most common seal silicone rubber products in modern product design. When it comes to waterproof, it is necessary to see the actual effect of silicone rubber ring. So what are the main reasons for the waterproof effect of silicone rubber ring? At first, many friends think that silicone rubber products are soft, slow and elastic, and the waterproof effect mainly comes from the extrusion fit degree of silicone products to achieve the sealing effect. It's not entirely wrong here, but in addition to that, the structure will also create a finished product that is airtight and waterproof. For example, if the product size is too big or too small, the sealing effect is not tight enough to achieve the sealing effect. The deeper the water pressure, the smaller the sealing effect. So it can be seen that silicone sealing products should be combined with the actual situation to see whether the product structure can be integrated into the body! According to the years of experience of silicone products processing manufacturers, if you want to make silicone rubber products sealed to achieve better waterproof effect, you may need to know these points! 1. Predict the size of the sealing ring according to the size of the parts to be sealed. 2. What is the maximum sealing effect, what is the minimum sealing degree, waterproof degree depends on the size of the product. 3. Choose different hardness and materials according to the actual size and what material is used to seal! 4. Whether the softness and size of silicone can fit into the sealing position, and how much size can be expanded to the maximum extent! 5. Different materials should be selected for sealing in different environments, such as long time water immersion and intermittent water immersion.

For the screen printing process, it has many excellent characteristics, good fluidity, strong paste viscosity, high and low temperature stability, good weather resistance to aging performance, the product pattern has more three-dimensional sense and feel, screen printing pattern also has excellent peeling strength, wear resistance, brightness; It is also waterproof, non-slip, breathable, high and low temperature resistance and outstanding leveling property. What details do we need to pay attention to in the silk-screen printing process in the production process of silicone products manufacturers? Screen printing process for the pattern requirements are relatively high, so in some silicone buttons and silicone protective sleeves and other processes will appear, the product ink is more important to the screen printing process, good quality ink will improve the quality of the pattern, and some products in long-term use for a long time, there are mainly several reasons leading to product fading phenomenon: 1. The baking temperature of silicone products after screen printing is too low and the time is short, resulting in poor wear resistance of silicone products characters printed out of screen printing, and the characters begin to become blurred after several times of use; 2, screen printing ink quality is too poor, affect the surface of silicone products; 3, the surface of silicone products is too dirty, hinder the adsorption of screen printing ink and silicone, resulting in a wipe off the character.

First of all, we summarize the classification of rubber products. Rubber products include rubber seals for automobiles, rubber buffer blocks for industrial life, rubber coated iron parts, rubber seals, gaskets, rubber seals, rubber toys, rubber miscellaneous parts and rubber shaped parts, etc., and rubber products are made of preferred materials for different parts, with different functions of rubber products; Some rubber products have the advantages of high strength, wear resistance, oil resistance, high temperature resistance, beautiful appearance, bright color, etc., such as rubber sealing strip, rubber plug, rubber kit, rubber sealing products, etc.   Rubber products can also be customized according to demand, mold research and development design, so in the prototyping trial production, the need to design to meet the requirements of quality testing and use; At the same time, it should also be noted that when rubber products manufacturers choose materials, they also need to choose environmental protection and good performance; On the one hand, in order to do a good job of their own brand, on the other hand for the customer needs the quality of rubber products and star body customization, seiko fine, can also make rubber products durable, provide better use experience.    

Fire seal material and process, first of all, the material, PVC fire seal, EPDM fire seal, graphite fire seal, modified PVC fire seal, silicone fire seal, and chloroprene rubber, polyurethane rubber, thermoplastic vulcanized rubber, butyl fine, rubber, plastic, plasticized PVC and so on; They all play the role of shock absorption, fire prevention, waterproof, sound insulation, dust, heat insulation, fixed sealing and so on. But their physical performance is more or less different, such as fire time, fire rating, industry specifications, and so on, some fire seals need to choose the expansion rate of 3-5 times the product. There are production requirements in addition to physical properties, hardness, tensile strength, compression recovery rate, tensile strength change rate and other production standards. As for the process of fire seal, if the EPD fire seal is used as a fire seal for construction, its process is generally mixed with ABS resin, supplemented by filler, improve the heat resistance of the material, at the same time, due to the addition of flame retardant additives such as zinc borate, it makes the thermal stability of the material and the residual carbon rate has been better improved.