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The function and difference of silicone hardness and softness

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!

2023

10/11

What are antioxidants? Why add antioxidants?

Some rubber contains unsaturated groups, due to the activity of these groups, sulfur can be used for vulcanization, on the other hand, it is precisely because of the presence of these unsaturated active groups, which makes rubber easy to react with oxygen, ozone and other active substances to break the rubber chain, crosslinking and so on. Even after destruction, diolefin rubber such as natural rubber, styrene butadiene rubber, butadiene rubber, isoamyl rubber, butadiene rubber and neoprene rubber still contain unsaturated groups and are affected by the above factors. The higher the temperature, the stronger the effect of these factors. These phenomena are particularly serious when the rubber is over-sulfur, at which time the free double bond in the rubber can also react with free sulfur to harden the vulcanized rubber, the so-called "post-vulcanization". In synthetic rubber, the material also hardens and becomes brittle due to further polymerization and intramolecular cross-linking (cyclization). Moisture, especially at high temperatures, can break rubber (such as polyurethane rubber) that can be hydrolyzed. In addition, rubber products often appear in the use of the surface cracking, white, physical and mechanical properties decline, these phenomena are collectively referred to as "aging". Rubber aging is not a simple process, but a general term for the decline in the performance of rubber and its products. The main factors leading to aging are thermal oxidation, oxidation with mechanical stress (flexion cracking), ozonation with mechanical stress (ozone cracking), oxidation with light and ultraviolet light (fine cracking effect), oxidation with heavy metal participation (accelerated aging of rubber poisons), hydrolysis of hot water, steam and water (hydrolytic aging), and simple heat Effects (thermal decomposition, post-vulcanization, cyclization, vulcanization reduction) and mold corrosion. In order to make durable rubber products, it is necessary to add some substances that can inhibit the above various aging phenomena in the rubber material, which is generally called "antioxidant". In fact, natural rubber, depending on its manufacturing method, always contains more or less organic substances that can inhibit oxidation (these substances are partly consumed in the vulcanization process). However, it can not meet the requirements of modern technology for the aging properties of rubber products, so it is still necessary to add antioxidants when manufacturing rubber products. Although most synthetic rubber has added some antioxidant as a stabilizer in the manufacturing process, a certain amount of antioxidant needs to be added in the application, especially to protect against ozone and flexor cracking.

2023

10/10

How to deal with moldy silicone products?

There are many silicone products in our lives, and silicone products are also one of the most common supplies in our lives.   Silica gel, also known as silica gel, is a granular porous silica hydrate, which is an amorphous substance with a transparent or milky white appearance. It is made by washing and drying sodium silicate after acid addition. It is chemically stable, non-burning, non-toxic and tasteless. Although the name "glue", it is actually a solid, transparent or milky white appearance. Silicone is sometimes referred to as silicone, but is actually a silicon-containing compound with completely different properties and uses. Generally due to the humidity of the outside world, the temperature causes mold, such as the kitchen, bathroom and other humid places, as well as the hot and humid climate in the south. Of course, in addition to the external influence, the main reasons also include some additives in silicone raw materials, such as silicone oil, color rubber powder, vulcanizing agent and so on. They are the main body of nutrients for these molds to grow. The growth of mold leads to the erosion of plant proteins and carbohydrates in silica gel. In addition, due to the inert and electrostatic effect of silica gel, impurities in the air are adsorbed on the surface of the product, which can also lead to the growth of mold. Generally, silicone products manufacturers have to consider such factors, so the moldy phenomenon of silicone products in addition to the factors of raw materials, mainly to rely on their own control. For example, some silicone tableware should be placed at a tilt after washing, so that water can naturally flow down, and the silicone sealing ring inside the rice cooker, do not immediately install it after washing, and place it in a ventilated place to dry naturally. Moldy silica gel products can be wiped with alcohol to remove moldy spots. If the above methods are difficult to solve, we can also choose to use mildewproof agents to treat, the choice of mildewproof agents should have high thermal stability, good weather resistance, low volatility and good compatibility of materials.      

2023

10/08

What is the role of silicone bracelet, you will know after reading

What is the role of silicone bracelet, silicone products are a very common type of product in life, there are many kinds of excellent functions, and they can give people a lot of help. Silicone bracelet is a very popular silicone products, many people will customize or buy silicone bracelets to wear.   Silicone bracelet used in various casinos, sports venues, can be used as gifts, souvenirs, promotional products, etc., is a hot fashion jewelry; It is also a low cost, high advertising efficiency advertising promotional gifts. Most sports bands have no practical purpose and are just fashion accessories. The English words or expressions on the bracelet often reflect the beliefs and values of the wearer. 1. As a fashion accessory. The color of the silicone bracelet is colorful, and it also comes with fluorescent luminous, which can choose your favorite color and style according to your own preferences. Wear it and then match it with your own clothing can play a very good decorative role. 2, prevent sweat flow to the player's hand caused by the phenomenon of sliding. Because it is made of environmentally friendly silicone, the silicone bracelet can effectively absorb the sweat from the human body and prevent the sweat from flowing to the players' hands causing the phenomenon of sliding. 3. To convey the wearer's beliefs. In today's society, people have more speech rights, and there are many ways to express their thoughts and beliefs. Because the DIY of the silicone wrist strap is very flexible, you can completely imprint the LOGO text you want to express on the wrist strap according to people's requirements, so as to achieve the role of the wrist strap to convey beliefs.

2023

09/28

Why is the silicone sealing ring valued?

Silicone seal ring is an excellent silicone products, in the industrial manufacturing industry and other industries have applications, common such as a variety of household appliances, automobiles, etc. are used in the silicone seal ring. Silicone sealing ring is also a very important silicone products, today Weishun silicone small knitting will take you to understand why silicone sealing ring will be paid attention to, let's see. The reason why the silicone sealing ring has received market attention is not only that it belongs to the ranks of the new silicone products, which can be directly different assembly requirements for sealing operation. The silicone raw materials can be mixed and formed by the dual transformation of manufacturers and customers, and the insulating properties of the silicone itself can be retained while effectively extending the service life of the sealing ring products, so that the reasons for this type of ring products have been expanded. 1. Meet the certification conditions Since the silicone seal ring has a new upgrade in adsorption and wear resistance, it can join the ranks of the corresponding certified products to prove its usable nature. So that the product can be better used in non-corrosive application scenarios to ensure excellent air tightness, so that Guofengyuan such silicone products manufacturers receive more attention at the same time to participate in more certification activities.   2. Strong bonding force This kind of silicone sealing ring is made of complete silicone raw materials through the vulcanization process and molded to sell on the market, its production not only retains the heat resistance properties of the product itself but also enhances the bonding tension. So that the product can withstand more pressure after assembly, so as to slow the yellow aging time of the equipment, so that the bonding effect is specific in various sealing activities.   3. There are many ways to use According to the sealing grade needs of different products, this kind of sealing ring can play a corresponding auxiliary role, in the production activities of the water purifier can add this kind of sealing ring to enhance the insulation effect of the water purifier, and in the use of the fresh-keeping box, the sealing ring can be used to increase more sealing insurance properties, so that the user's home equipment can get the technical addition and harvest the intelligent life.

2023

09/26

The three major factors of silicone material affecting product vulcanization and tensile resilience

In the production process of silicone products, silicone molding and all aspects have certain factors, but to ask which aspect of the reasons occupy the main problem point, or to control from the production link, but from which link is the most difficult to control then it is certainly the raw materials, so when the raw materials are wrong, we should look for the source of silicone materials - next reason!   Reasons 1: The vinyl content in the silicone material is not enough or the vinyl content of the raw rubber itself is not evenly distributed, so that the silicone does not reach the positive sulfur point during vulcanization, the vulcanization rate is too long, the vulcanization is not comprehensive and insufficient, resulting in poor silica gel rebound. The solution: The poor resilience and slow vulcanization rate can be solved by increasing the overall vinyl content of silica gel and adding appropriate amount of hydrogen-containing silicone oil into the formula to reduce the amount of filler and increase the amount of silica gel. It can also be used with different types of vinyl content of raw rubber, with a small amount of high vinyl raw rubber to control the tensile permanent deformation of silicone, formula to find an optimal balance, in order to avoid the occurrence of brittle silica gel material to achieve the purpose of improving elasticity.   Reason 2: The silicone material itself is acidic, which is also an important factor leading to poor silica gel resilience and slow vulcanization rate. Because the white carbon black itself is acidic, and the added structure control agent is mostly acidic, the silica gel is acidic, and the acidic silica gel has a delayed effect on vulcanization, and the high temperature resistance will also decrease. The solution: The acidic content of the silica gel material can be improved by adding appropriate weak alkaline substances, and the PH value of the general rubber is in the neutral or weakly alkaline range to improve the elasticity and vulcanization rate.   Reason 3: The addition of too much plasticizer or structure control agent in silica gel has delayed vulcanization effect on silica gel, resulting in poor silica gel resilience and slow vulcanization rate. The solution: Raw rubber with narrow molecular weight distribution and certain volatile components can be selected to improve the release of silicone products, thereby reducing the amount of plasticizer; When the surface of white carbon black is treated with alkoxysilane, it is used with hydroxyl silicone oil, and the two-step method is used to make the white carbon black molecule and the raw rubber molecule have a certain combination reaction time, and the process can take health care to reduce the amount of structural control agent, so as to improve the resilience and vulcanization speed of silica gel. In addition, the establishment of a standard vulcanization curve for each type of silica gel is also a means to control the stable production quality of the compound.

2023

09/18

How To Protect Good Silicone Products?

Since the appearance of silicone products in our lives, deeply loved by the majority of friends, sales also rise day by day, with the change of the market, many of our friends are understanding of silicone products, basically in each region have to buy, especially our common silicone products mobile phone cases and watch bands, in the market is very popular, However, for the protection of silicone products we have little understanding, some of our friends in the purchase of a very good silicone products but do not know how to protect it, abnormal when we do not know how to clean and protect, and the killer of silicone products is very much, silicone although in the characteristics of the performance is very good, silicone products how to protect it.   Our silicone jewelry is now simple and exquisite, can be worn in all seasons, and is also very popular, but what problems should we pay attention to in maintenance? In hot weather, we are easy to sweat in exercise, and it is easy to cause the bracelet to be exposed to the sun and discolor, so you can take less in summer, but you can spray the feel oil to prevent stains and anti-static, you can use toothpaste to clean when sweating, the best maintenance way to wear silicone products in hot weather is to clean once a day, ventilation, and keep dry. In the temperature is very good weather, especially when the sun is too big, try not to be exposed for too long, so that if the silicone rubber products are not dry, or there is water, it is easy to change color, and exposure can make the silicone products expand and deform, if you feel that your silicone products are very old, then you can basically replace one, otherwise it is likely to lead to the skin feeling itchy, Because the good silicone products can not withstand the devastation of the family, generally a silicone bracelet can be worn for about two years, if it is very like you can take the spray feel oil, keep the color continue to wear, in humid climates, the hardening rate of silicone will accelerate, so try not to twist and pull with your hand in humid weather, otherwise it is easy to break, silica gel is easy to burn, Fear of fire, the softness of silicone products is very good, so do not use sharp things to rub and compare.   The above are several maintenance methods of silicone products, more questions about silicone products, you can contact us for consultation.

2023

09/15

The Silicone Ring Sealing Effect Is Poor, What Is The Reason For Not Achieving The Sealing Effect?

There are many main reasons that affect the service life, but in any seal, the silicone ring will be affected by several common phenomena.   The force size affects or the compression is permanent, and the installation method is different, such as plane, concave and convex groove or groove, etc. The installation method of each product is different, which is likely to lead to uneven force and force center deviation, resulting in a heavy side and light side resulting in compression permanent deformation after long-term overloading. When the sealing silicone ring is removed again, there is likely to be deformation, so it is necessary to control the balance and the degree of stress evenly integrated at the same time of installation.   Incorrect product size resulting in gap deformation: The gap problem can be divided into several factors, one is because of the material material problem, many silica gel materials due to the formula of poor resilience, insufficient tensile force caused by the problem in the process of use is not strong enough to leak gaps, silicone ring processing manufacturers processing problems: for example, the product is brittle resulting in the silicone product roll thickness is relatively thin is prone to this problem, The soft product leads to the internal bulge of the rubber material, and the gap problem occurs after the deformation of the long-term tensile pressure.   Product weakness or brittleness lead to functional failure, many times is not the structural problem of materials and products, but the quality standards of products are affected in the production and processing process of silicone rubber products manufacturers, such as processing does not understand the hardness and softness requirements of products, and the processing time will be extended leading to the product is too brittle in the process of installation. Or if you want to improve the processing efficiency, the product becomes soft, resulting in deformation when the product is stressed.   Product weakness or brittleness lead to functional failure, many times is not the structural problem of materials and products, but the quality standards of products are affected in the production and processing process of silicone rubber products manufacturers, such as processing does not understand the hardness and softness requirements of products, and the processing time will be extended leading to the product is too brittle in the process of installation. Or if you want to improve the processing efficiency, the product becomes soft, resulting in deformation when the product is stressed.

2023

09/11

Application Range Of Acrylic Products.

Acrylic, also known as plexiglass, is a polymeric compound, a plastic product with a large amount of light. Acrylic is characterized by smooth surface, bright color, small specific gravity, high strength, corrosion resistance, moisture resistance, sun fast, good insulation performance, sound insulation and so on. In addition, it is easy to process, cut and bend, so that its application range is constantly expanding.   Acrylic products refer to handicrafts or consumer goods made of acrylic materials according to their excellent characteristics. Because acrylic products have the advantages of high transparency, low price and easy processing, acrylic products are widely used and can be seen everywhere in our lives.   What is acrylic? Application range of acrylic products   Acrylic has high transparency, light transmittance of 92%, and the reputation of "plastic crystal". And acrylic has excellent weather resistance, especially for outdoor use, ranking very top in other plastics, good surface hardness and luster, large processing plasticity, can be made into a variety of required shapes and products. In addition, there are many kinds of colorful acrylic sheets (including translucent sheets), and another feature is that thick sheets can still maintain a high transparency.   Use of acrylic products: 1, architectural applications: indoor and outdoor lighting shield, luminous lamp shade, window, etc., large shopping mall access control and high-grade construction sign system; 2, advertising applications: light boxes, signs, signboards, display shelves, etc.; 3, civilian products: bathroom facilities, crafts, cosmetics, brackets, aquariums, etc. 4, industrial applications: equipment identification plate, instrument panel, protective cover, etc.; 5, lighting application: fluorescent lamp, chandelier, street lamp shade and other acrylic products; 6, home application: fruit tray, tissue box, picture frame and other home products. What is acrylic? Application range of acrylic products After the processing of acrylic products is completed, there are several points to note: First, the thermal deformation stability of ordinary acrylic sheet is about 100 degrees, so pay attention to this temperature value when using acrylic products, such as the temperature should not be higher than 90 degrees when continuous use. Second, the surface hardness of acrylic products is equivalent to that of aluminum, so pay attention to avoid scratching the surface when using or processing acrylic products. If scratched, the original glossy surface can be restored by polishing. Third, if the acrylic products are blurred or not clean due to slight scratches or dust adsorption caused by static electricity, you can use 1% soapy water dipped in a soft rag to wipe it clean.

2023

09/07

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