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

Some common silicone products in life are soft, while some are hard. Most people don't know how hard silicone is. In general, the hardness of ordinary silicone is 30°-80°, which is suitable for the production of most silicone products.   First of all, silicone products have good toughness and elasticity, and are not easy to be deformed by external forces. It will have a layer of oily material on the surface, so it will feel smooth. Mainly used in construction machinery, automobile, electronic products, home appliances, toys, medical, sports equipment and other industries. It has the functions of shock absorption, sealing, anti-static, high and low temperature resistance, wear resistance, flame retardant, acid and alkali corrosion resistance.   Secondly, most silicone products are made of silicone compounds, and the molding process is mainly oil pressure molding. The lower the hardness, not only is not conducive to the material placement of the product, but also because its internal structure is semi-fluid, bubbles will be produced during the high temperature vulcanization process. Therefore, we have high requirements for the selection of silicone materials for these products. At the same time, we must also use better vulcanizing agents, which can be solved by increasing the power of the vacuum machine and improving the mold structure. In short, the hardness of silicone products should meet the requirements of the product. In general, 50°-60° is common.

Silicone seal is a widely used sealing products, used in a variety of electronic appliances, mechanical equipment, automotive industry and other fields, with waterproof, dustproof, sound insulation and other excellent performance. However, sometimes the seal will be brittle, which will affect its sealing performance. So, what is the main reason for the brittle silicone seals?   In the process of use in different environments, the material and formula of silicone seals determine their elasticity and stability. If the silicone parts in the production process, raw materials do not meet the standards or there is a deviation in the formula, it is easy to affect the long-term stability of the silicone products. In addition, if the ambient temperature is too high or too low in the process of storage and use of seals, it is also easy to lead to unstable performance of silicone materials leading to insufficient life. Silicone products may also cause brittleness during use because of excessive pressure or improper use methods. For example, if the silicone material is excessively stretched or squeezed during the assembly process, it is easy to cause its deformation or rupture. In addition, if the seal is frequently exposed to corrosive substances or high temperature environments during use, it may also cause deterioration, thus affecting its performance and life.   The design and manufacturing processes also affect the risk of brittleness. If the design of the seal is unreasonable, such as complex structure or large curvature, it is easy to produce stress concentration during use, resulting in brittleness. In addition, if the silicone products manufacturers improper production operations, such as improper temperature and time control will also affect the performance and stability of the seals. In summary, the reasons for the brittleness of silicone seals are more complex, involving both materials and formulas, and the use of the environment and mode of use, but also inseparable from the design and manufacturing process. Therefore, in the process of selection and use of seals, it is necessary to operate in strict accordance with the specifications, pay attention to the ambient temperature and use method, and select the right products and manufacturers to ensure the quality and stability of seals. At the same time, manufacturers of seals should also strengthen quality control and technology research and development, improve the reliability and stability of products, and provide users with better products and services.

What is silicone sealed coil?   Silicone sealing coil is a silicone product that can play a sealing role in all walks of life. It has excellent sealing function, electrical insulation function, strong tensile strength, and the temperature range of silica gel is about -40 to 280 degrees.   Silicone sealed coil features: 1. Outstanding ability to compress and deform; 2. Resistant to neutral solvents; 3. Excellent heat and cold resistance; 4. Good electrical insulation, not easy to age; 5. Excellent resistance to ozone and oxidative corrosion. Silicone sealing coil technical parameters: Product specifications: φinner diameter mm × outer diameter mm(inner wall thickness = outer diameter); Product color: Customizable. Product hardness: about 60 degrees, other hardness can be customized according to requirements;

Tempered glass cannot be cut by laser. The tempered glass can no longer be cut and processed, and the glass can only be processed to the required shape before tempering, and then tempered.   Tempered glass is a safety glass, tempered glass is actually a kind of prestressed glass, in order to improve the strength of the glass, usually use chemical or physical methods, the formation of compressive stress on the surface of the glass, the glass to withstand external forces first offset the surface stress, thereby improving the bearing capacity, enhance the glass itself resistance to wind pressure, cold and heat, impact and so on.   Tempered glass features: Step 1: Security When the glass is damaged by external forces, the fragments will become obtuse small particles similar to honeycomb, which is not easy to cause serious harm to the human body.   2. Height The impact strength of tempered glass of the same thickness is 3 to 5 times that of ordinary glass, and the bending strength is 3 to 5 times that of ordinary glass.   3. Thermal stability Tempered glass has good thermal stability, can withstand the temperature difference is 3 times that of ordinary glass, can withstand the temperature difference of 300℃.   Ordinary glass can be cut by laser, the advantages of ordinary glass using laser glass: First, all laser cutting methods use non-contact processing technology, which greatly avoids the problem of fine cracks and debris. Second, the residual stress left in the glass by the laser cutting method is very small (the residual stress of different cutting methods is different), so the strength of the cutting edge is higher. This is very important, if the residual stress is too large, then even in the center of the glass plate, it often causes the edge of the glass to break. Therefore, compared with the glass cut by mechanical method, the force that laser cut glass can withstand is 1-2 times larger.   We should remember that tempered glass can not be cut with laser, but ordinary glass can be cut with laser, if you want to cut the glass, you can cut it before tempering.

1, oxygen in rubber with rubber molecules free base chain reaction, molecular chain fracture or excessive crosslinking, causing rubber properties change. Oxidation is one of the important reasons for rubber aging.   2, the chemical activity of ozone is much higher than oxygen, more destructive, it is also to break the molecular chain, but the effect of ozone on rubber with rubber deformation or not is different. When the rubber is used for deformation, cracks appear in the direction of direct action with the stress, that is, the so-called "ozone cracking"; When acting on the deformed rubber, only the surface of the oxide film is formed without cracking.   3, increasing the temperature can cause thermal cracking or thermal crosslinking of rubber. But the basic function of heat is activation. Increasing the oxygen diffusion rate and activation oxidation reaction, thereby accelerating the rubber oxidation reaction rate, which is a universal aging phenomenon - hot oxygen aging. 4, the role of water has two aspects: rubber in wet air rain or long-term immersion in water, easy to destroy, this is due to the water-soluble substances in rubber and hydrophilic groups and other components are dissolved by water extraction, hydrolysis or absorption and other reasons. Especially under the alternating action of water immersion and atmospheric exposure, the destruction of rubber will be accelerated. However, in some cases, the moisture does not damage the rubber, and even has the effect of delaying aging.

In many silicone products, deformation often occurs in the process of use, such as the common silicone sealing ring, for example, some sealing products are long-term adhesive and metal pressing and extrusion, after frequent stress resulting in silicone sealing ring does not rebound, no stress phenomenon, some sealing rings are used in harsh environments for a long time, such as oxygen, heat, light under the action of aging phenomenon resulting in phase distortion. Therefore, in the initial stage, the use environment and time of silicone seals need to consider whether the material and the product can maintain a long-term life, and the elasticity is not affected.   In the process of use, a variety of high and low temperature is a major factor affecting the product, although the silicone material can accept more than 200 degrees to -40 degrees of high temperature, but long-term suitable for harsh heat conditions will accelerate the aging of the silicone seal ring, the higher the temperature, the greater the deformation of the product will be, and the largest force deformation of the silicone material is generally more than 40% will completely lose working performance. Causes the seal to leak and so on. When used at low temperatures, it is recommended to appropriately increase the compression and tensile degree. When used at low temperatures, attention should be paid to the phenomenon of product necrosis and deformation and rupture.   Tensile degree is one of the main operating capabilities of silicone sealing ring, so in the production of silicone products manufacturers will choose the corresponding pull strength material and various hardness of the use of conditions, so for long-term repeated use of the demand can choose high tensile silicone material processing production, in order to prevent the growth of products over time and affect the performance of the product, Due to the long-term operation of silicone rubber beyond the tensile range of the use of the case will often make the product become relaxed, lose tension, so in sufficient conditions to reduce the work of the tensile degree, long-term use of the biggest factor affecting the deformation of silicone material, so reduce the working pressure is the best way to maintain the seal ring, in addition to the performance of the product using high-quality materials, The higher the high tensile force and the higher the hardness of the product, the better the product quality.

Adhesive foot pad in a variety of products base as a foil buffer, it has been widely used in major industries, belongs to a kind of micro auxiliary accessories, low cost and simple function, but some products have it and it is too redundant, some items do not have it, so with its role and function, many items need to use it to set off the use, The difference is that it has a different process and a different structure. The function of the rubber foot pad is based on the adhesion of the bottom as a whole plane, at present, our common rubber gaskets are made of a plane with non-slip sungrain texture, and its main process is made of flat gaskets as a whole calendering process or molded sheet molding. This kind of silicone gasket has a wide range of applications, which are used in many seats, wardrobes and electronic and electrical products, so both sides belong to the plane structure under the premise of the plane effect, and can be applied to a variety of flat products for backgluing. The other is the structural rubber pad, this kind of foot pad must use the oil pressure molding process for production and processing, to make the effect of convex and curved structures to fit, this way is mainly for the processing of special-shaped rubber parts, can be used for customized rubber parts processing in various fields. Flat and shaped adhesive parts need to be fitted, the adhesive way is divided into single-sided adhesive and double-sided adhesive, followed by the adhesive paper is also very important, the current commonly used silicone adhesive paper is divided into TPE adhesive paper and double-sided adhesive paper. Back adhesive paper is also divided into genuine and imitation products, high strength and conventional adhesive, different quality for different products, the current silicone pad is commonly used 3M back adhesive paper, so in different pad life above which to consider its adhesive paper and use strength.

In the process of production and processing, the silicone products produced sometimes have the reason that the surface is not smooth. So what happens is that   What's the reason? 1, first confirm whether it is because of the mold. If the mold itself is not smooth, then the surface of the product produced will also be It's not smooth. 2. Check whether enough curing agent is added. If the amount of curing agent added is insufficient, it will cause insufficient surface curing of the product, there will be A slimy feeling. 3. Check whether the stirring of the curing agent is uniform. If the stirring of the curing agent is not uniform enough, there will be sufficient curing while curing Inadequate situation.

With the rapid development of silicone products, the production technology of silicone keys is also rapidly improved and mature, silicone keys are used in various industries, and the silicone keys made are more beautiful, some will screen print logo, screen print font, feel very good to use, the use of life is also very long, usually the number of use of silicone keys is about 200,000 times, There are some more exquisite silicone buttons are crystal clear, the surface is smooth and beautiful; In fact, the surface of the silicone button is smooth and beautiful because it has been processed by the glue dropping process.   So, how to carry out the glue dropping process of silicone keys?   1. Generally, the rubber dropping of silicone keys uses epoxy resin as a material, and then mixes it with the curing agent, and then drops it on the surface of the silicone keys, and then puts it for a certain period of time, after it dries, the silicone keys will be more beautiful, and also protect the appearance of the silicone keys from damage; 2 silicone button is anticorrosive, waterproof, wear resistance, good-looking and other advantages, good-looking is its crystal clear appearance, can increase the gloss of the product, such as the silicone button drop process of the application range is relatively wide, can be used for glass, metal, ceramics and other materials production process; 3. Generally, when the glue dropping process is carried out, high purity epoxy resin and curing agent will be mixed and prepared in proportion, and then put into the glue drip irrigation, and then drop a certain epoxy resin on the silicone button with the glue drip irrigation, and then place the silicone button after the glue drop for about 12h, so that it is fully cured, and after the curing is completed, the glue dropping process will be completed. In short, the glue dropping process is an important part of the production of silicone keys, so that the production can not only achieve crystal clear silicone keys, but also make the silicone keys have a good feel and gloss, notes: can not be placed too much epoxy resin, to prevent the production of poor products.

For consumers who do not understand the silicone material, the physical hardness of silicone rubber products may produce an ill-informed mind, the size of the product is the same without too much change, and the relationship between the formula and various physical properties is not complete to understand, all kinds of silicone, rubber and other material raw materials have its hardness and softness characteristics, natural silicone products are no exception, So why silicone material can be used in all walks of life in the world, because of its excellent hardness.   Different silicone products have its unique performance and process requirements, such as silicone silicone seals, silicone accessories, etc., can choose the most suitable polymer and match and reasonable deployment, in the hardness and softness to achieve close adhesion sealing shock absorption, waterproof oil and other effects, and hard and soft physical properties are still closely related to the formula and raw materials of the product. The debugging of the formula can try out various performance differences and functions, so the hardness and softness debugging still need to be careful, otherwise the hardness and softness errors are likely to cause inevitable trouble.   We all know that silicone material has good tensile strength, and the tensile strength of the index depends on the degree of hardness and softness of the product, silicone rubber products manufacturers generally the hardness of the manufacturer is about 20-80 degrees, the lower the hardness of the product tensile strength is better, generally can reach about 300%, the minimum is about 20%, However, it still depends on the structure and shape of the silicone product.   Silicone material is indispensable this is the tearing strength, silicone rubber material will be due to force and other factors and tear phenomenon, this is one of the inevitable phenomena of all rubber, and cracks and cracks caused by force cracking phenomenon occupy a minority, because silicone rubber with conventional hardness basically no tear rupture phenomenon, Materials with higher hardness are likely to tear due to the diffusion of the crack mouth.   Therefore, the tensile force and hardness of silicone products are important indicators of the material, silicone processing manufacturers in the vulcanization production procedures, the greater the silicon molecular weight of the compound, the greater the effective cross-linking fixed elongation stress. In order to obtain the specified constant elongation stress, the crosslinking density of the material with small molecular weight can be appropriately increased. Any structural factor that increases intermolecular forces. Increasing the density of silica gel material can prevent the hardness of the product from affecting the tensile strength of the product.