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Differences between EPDM rubber and Silicone, properties and applications

EPDM rubber and silicone are two different types of elastic materials, and there are some differences in their properties and application fields.     1. Properties: EPDM Rubber (Ethylene Propylene Rubber) : EPDM is a synthetic rubber with excellent resistance to aging, ozone, acids and alkalis, and heat. It also has excellent electrical insulation properties and elasticity, and is able to maintain its physical properties over a wide range of temperatures.   Silicone: Silicone is a polymer compound composed of the elements silicon, oxygen, carbon and hydrogen. It has excellent heat resistance and can withstand extreme temperature conditions, as well as good softness, elasticity and insulating properties.   2. Application areas: EPDM Rubber: EPDM rubber is widely used in the automotive industry for making seals, pipes, wings, etc. It is also used in the construction and engineering fields as roof waterproofing materials, sealing strips and anti-vibration materials. In addition, EPDM rubber is also commonly used for wire and cable insulation and electrical insulation parts. Silicone: Silicone is commonly used in food processing, medical devices, electronics and aerospace. Due to its high temperature and chemical resistance, silicone is often used as seals, protective coverings for electronic components, moulds and manufacturing materials for medical devices.   3. Waterproof performance Silicone has excellent waterproof properties. It has excellent water resistance and maintains its physical properties in wet environments. Silicone is a non-polar material and therefore will not be permeated or absorbed by water, providing reliable waterproof protection. Silicone is often used as a key component of seals, waterproof coatings and waterproof adhesives.   EPDM rubber also has good waterproof performance. It is a synthetic rubber with excellent resistance to aging, ozone, acids and alkalis.EPDM rubber is commonly used in areas such as waterproofing of building roofs, sealing of pipes and automotive seals. It can effectively stop moisture penetration and provide a reliable waterproof barrier.   Overall, both Silicone and EPDM rubber offer good waterproofing properties, but the exact choice depends on the requirements of the particular application. If waterproofing is required in high-temperature, chemical and food-processing environments, silicone may be more suitable. In contrast, EPDM rubber is often a common choice for waterproofing in construction and automotive applications.   EPDM rubber is used in a wide range of applications in the automotive, construction and electrical sectors, while silicone is more commonly used in specialised environments such as high temperature, chemical and food processing. However, the exact range of applications also depends on specific needs and requirements.

2023

08/17

Acrylic mirror yellow how to do?

Acrylic mirror used for a long time, it is easy to yellow, discoloration. Because acrylic is a kind of organic glass, ultraviolet light, oxygen, moisture and heat are easy to cause oxidation and discoloration of acrylic, this reaction is irreversible, so it is generally polished to solve the problem of yellow acrylic mirror.   Acrylic mirror with what polishing?   1, the polishing of acrylic mirror is mainly in its processing, the polishing method is mainly diamond polishing and flame polishing. The polishing paste is often used in the entire polishing process to promote the polishing effect of the acrylic mirror. There is a big difference between the polishing and grinding of acrylic is that polishing does not change the dimensional accuracy of the workpiece, and the fine lines and spots on the surface of acrylic mirror products are removed, which promotes the surface finish of acrylic mirror products, and also reduces the fog until the mirror luster appears. Polishing paste is added between the polishing wheel and the finished surface.   2, polishing paste is one of the key process materials in the polishing process of acrylic mirror products, with the advantages of fast polishing speed, high finish and long service life, and can change the polishing quality and operating environment. For example, polishing acrylic with rare earth polishing paste, 1min time to complete the work, such as iron oxide polishing paste, it takes 30 to 60min. Rare earth polishing paste because of its unique chemical mechanical action principle brought about by the high polishing efficiency, become a good choice of acrylic mirror products polishing materials.   3. When manually polishing, a fine felt or absorbent cotton ball dipped in polishing paste should be attached to the polishing surface with a pressure of about 5 ~ 10N, and it should move in a near straight line along the processing length at a speed of 100 ~ 120r/min, usually 1 ~ 2mm per second. Be careful not to concentrate too much on a certain part of the polishing, so as to avoid the formation of local friction overheating and processing depression. In addition, pay attention to the polishing paste on the surface of the polishing area should not be too dry, and pay attention to adding lubrication.   However, the polishing technology of acrylic mirror may be a little complicated for ordinary people, and the maintenance of acrylic mirror is still based on daily maintenance.   How to maintain acrylic mirror?   1, waxing, if you want the acrylic mirror to be bright and bright, you can use liquid polishing wax and wipe evenly with a soft cloth to reach the intention.   2, adhesion, if the acrylic mirror is accidentally damaged, you can use methylene chloride adhesive or fast drying agent to follow.   3, clean, acrylic products, if there is no special treatment or increase of hard resistance, the product itself is easy to wear, scratch. Therefore, for the usual dust treatment, you can rinse with a chicken blanket or water, and then wipe with a soft cloth. If the external oil is disposed of, soft detergent can be added with water and wiped with soft cloth.

2023

08/16

How wide is the use of silicone rubber seals, why do they like to use silicone rubber seals?

Silicone rubber sealing rings are widely used in various industries such as automotive, aerospace, construction, and medical industries. Silicone rubber is a compound that has excellent properties such as heat resistance, chemical resistance, and flexibility, which make it an ideal material for sealing purposes. In this article, we will discuss the wide range of applications for silicone rubber sealing rings and why they are so widely used.   One of the most common uses of silicone rubber sealing rings is in the automotive industry, where they are used to seal various parts of the engine, transmission, and other components. Silicone rubber has excellent heat resistance, which makes it ideal for use in high-temperature environments such as engine compartments. It is also resistant to oil and other automotive fluids, making it an ideal material for sealing components that come in contact with these fluids.   In the aerospace industry, silicone rubber sealing rings are used to seal various components of aircraft such as fuel systems, hydraulic systems, and engines. Silicone rubber is resistant to a wide range of chemicals and can withstand extreme temperatures, which makes it ideal for use in aerospace applications. Its flexibility also allows it to be used in various shapes and sizes, making it adaptable to different components.   In the construction industry, silicone rubber sealing rings are used to seal various components of buildings such as doors, windows, and roofs. Silicone rubber has excellent weather resistance, which makes it ideal for use in outdoor applications. It can withstand exposure to sunlight, rain, and other weather conditions without deteriorating or losing its sealing properties. In the medical industry, silicone rubber sealing rings are used in medical devices such as catheters, pacemakers, and other implantable medical devices. Silicone rubber is a biocompatible material, which means it can be used in contact with the human body without causing any adverse effects. Its flexibility also allows it to be used in various shapes and sizes, making it adaptable to different medical devices.   There are many reasons why silicone rubber sealing rings are so widely used. One of the main reasons is their excellent properties such as heat resistance, chemical resistance, and flexibility. These properties make them ideal for use in various industries and applications. Another reason is their durability and longevity. Silicone rubber sealing rings can last for years without deteriorating or losing their sealing properties, which makes them a cost-effective solution for many applications.   In conclusion, silicone rubber sealing rings have a wide range of applications in various industries such as automotive, aerospace, construction, and medical industries. Their excellent properties such as heat resistance, chemical resistance, and flexibility make them ideal for use in different environments and applications. They are also durable and long-lasting, which makes them a cost-effective solution for many applications. It is no wonder that so many industries and people prefer to use silicone rubber sealing rings.

2023

08/14

What are the problems and problems of custom processing of transparent silicone accessories?

With the development of modern technology, transparent silicone accessories have been widely used in various fields. The excellent performance and beautiful appearance of transparent silicone accessories have been widely recognized and accepted, so the production and processing of transparent silicone accessories are becoming more and more serious and important. However, there are still some problems and problems in the custom processing of transparent silicone accessories:   First, the design is difficult The production and processing of transparent silicone accessories requires a complete drawing process and technical solutions, and the design needs to take into account the process flow, material thickness and accurate size customization according to customer needs. Therefore, it is necessary to consider many details in the design, and the design is more difficult.   Second, the cost of silicone is high Compared with many other materials, the price of silica gel is relatively expensive. Due to the high processing heat treatment temperature of silica gel, the cost of production and processing is also relatively high. Therefore, compared with other materials, the cost of silica gel is higher.   Third, the production is difficult The production and processing of transparent silicone accessories requires very high skills and expertise, which is due to the high adhesion and high elasticity of silicone, so great care should be taken in the production and processing process to avoid assembly errors or mistakes.   Fourth, quality detection difficulties The quality inspection of transparent silicone accessories requires the use of special technology and equipment to ensure that the quality of the product meets the standard. This requires silicone technicians to have high professional knowledge and experience in order to be able to effectively carry out quality testing.   In summary, although there are many difficulties and problems in the production and processing of transparent silicone accessories, with the development of technology and the comprehensive promotion of the silicone industry, these problems will be gradually solved. Through technological innovation and the application of high equipment, the production and processing of transparent silicone accessories will continue to usher in broader prospects for development.

2023

08/11

Introduction to classification of oil seals used in automobiles

Because there are many brands and models of cars, there are different oil seal models and many classifications. It is mainly classified by the medium of the oil seal, the shape of the oil seal, the spring of the oil seal, the lip type of the oil seal, the speed of the oil seal (high and low speed), the pressure of the oil seal (high and low pressure), the fluid power of the oil seal.   1.can be classified according to the sealing medium: gas seal with oil seal, fluid seal with oil seal, grease seal with oil seal;   2.can be classified according to the seal shape: rotary shaft with oil seal (inner seal), rotary shell with oil seal (outer seal);   3. It can be classified according to its own structure: skeleton oil seal (mainly divided into outer skeleton oil seal and inner skeleton oil seal), skeletonless oil seal, composite oil seal; Can be classified according to the spring or no spring oil seal: spring type oil seal (ribbon spring or finger spring oil seal), no spring oil seal;   4.Can be classified according to the number of lips of the oil seal: single lip oil seal, double lip oil seal (there are anti-dust lip oil seals or two kinds of separated lips oil seals, etc.);   5.can be classified according to the rotating linear speed: low speed oil seal (standard low linear speed < 8m/s), medium speed oil seal (standard line speed 8-17m/s), high speed oil seal (standard line speed > 17m/s);   6.It can be classified according to whether there is fluid power oil return effect: ordinary smooth oil seal, oil seal with oil return line at the lip;   7.can be classified according to the oil seal medium pressure: low pressure oil seal, high pressure oil seal;   According to the standards given by the state, the structure of the oil seal can be generally divided into three sealing surface structures and six basic oil seal forms (internal skeleton oil seal structure diagram, exposed skeleton oil seal structure diagram, assembled oil seal structure diagram).

2023

08/04

Where the foam strip silicone tube can be used?

Silicone rubber foam strip weather resistant Silicone products have strong weather resistance on the foam strip. Under natural conditions, between minus 50 degrees and 250 degrees above zero, everything can be fully played normally, both sound insulation and noise reduction, and heat resistance. Silicone foam strips, the surface will be strong, anti-aging, greatly extend the service life. Foam strips are non-toxic and environmentally friendly As a green raw material, no matter which kind of natural environment is used, it is not easy to release toxic substances and harmful substances, and there is no harm to the natural environment and the human body. Even if it is used in the sun, it can reasonably resist ultraviolet rays and is not afraid of sun exposure. Silicone rubber foam strip for compression resistance Some people believe that the silicone foam strip does not have strong compression properties, and you should be extra careful when using it. In fact, its bearing capacity is far more than everyone imagined, and it will not be deformed under strong working pressure. In addition, the punching die can be set reasonably, and after grinding and polishing, the practical effect is stronger. Enable customers to choose a well-known brand dealer with comprehensive strength, deal with the large molecular weight of Kirsk foam, in-depth research, to provide application solutions, the main uses are wide, can be used in new energy technology, military, medical, aviation, ships, electronic equipment, automobiles, instruments, switching power supply, high-speed rail trains and other industries.   Silica gel is a new type of polymer material, with high temperature resistance, low temperature resistance, non-toxic, tasteless, non-toxic and other advantages. That means it's very stable. All in all, silicone tube is a very good material, I believe that now we have a more comprehensive understanding of silicone tube, so if there is a need, may wish to buy and use silicone tube, I believe there will be many places can use silicone tube.

2023

07/31

What are the main reasons for the aging life of automotive silicone seals?

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.

2023

07/27

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