Is silicone in general resistant to UV rays 5

General silicone is resistant to ultraviolet rays and is not prone to cracking.

The main component of silica gel is silica, which is chemically stable and does not burn. Silica gel is an amorphous silica, and the dust content of the workshop should be controlled not more than 10 mg cubic meters, and the exhaust should be strengthened, and masks should be worn during operation.

Silica gel has a strong adsorption capacity and can have a drying effect on people, so you should wear good work clothes when operating.

Silicone products are not susceptible to decomposition by UV light and ozone because they are not easily decomposed by UV light and ozone. Silicones have better thermal stability than other polymer materials, as well as resistance to radiation and weathering. Silicones can last up to several decades in the natural environment.

There are two types of silicone in general:

Condensed silica gel, also known as industrial-grade silica gel, is an organotin catalyst that can resist ultraviolet rays, but is prone to aging under long-term ultraviolet conditions.

Additive silicone, also known as environmentally friendly silica gel, is a platinum catalyst catalyst that resists ultraviolet rays longer than condensed silica gel.

In general, they are all resistant to ultraviolet rays, that is, the addition molding of silicone under ultraviolet rays is more resistant to aging.

Silicone is a very stable chemical synthesis, acid and alkali resistance, high temperature resistance, if it is a relatively soft silica gel, it will generally not crack, it depends on where you use the product, Nahai silicone rubber professional silicone product manufacturers You can come and see.

No problem in 1000 hours, my company has tested it.

There is UV-resistant silicone.

The time of cracking depends on the dose of ultraviolet radiation and the composition of silica gel.

The high temperature resistance of silica gel can reach about 350 degrees.

The high temperature resistance of silica gel can reach about 350 degrees. The high temperature resistance of ordinary silica gel is between 200 degrees and 300 degrees, but there are some special silica gels, which can increase the high temperature resistance to about 350 degrees in a short period of two hours.

The performance characteristics of silicone

1. Silica gel has high temperature resistance and low temperature resistance

The molecular structure of the silicon atom in the silica gel is relatively unique, the methyl group is connected, and the molecule presents a helical structure, and the bond angle length is relatively large, so it has high thermal stability. In addition, the flexibility of silica gel is relatively good, so it has a low embrittlement temperature, which can meet the needs of minus 80 degrees Celsius.

2. Silica gel has chemical resistance

After the volatilization of oily or polar solvents, silica gel can quickly restore its properties to avoid softening or swelling, so it has good chemical resistance.

3. Low surface activity, physiological inertia

Silica gel is a semi-inorganic polymer material, which contains active compounds, and can be modified through special modification to increase the fire resistance, flame retardancy and aging resistance of silica gel.

4. Compression deformation resistance

Whether it is in a high temperature or low temperature environment, the compression resistance and deformation resistance of silica gel are relatively good, and the stable state that can be obtained will be better, and it can be processed according to the requirements of the market, such as the production of silica gel into a sealing rubber ring.

Among many substances, silica gel belongs to the category of high temperature resistance. In terms of properties, ordinary silicone can withstand high temperatures of 200-300 degrees Celsius. In addition, in a short period of time (e.g. two hours), the maximum temperature of silicone is about 350 degrees Celsius.

If it is a high-temperature resistant silica gel, it can withstand temperatures of 300-500 degrees Celsius.

Silica gel, also known as silicate gel, is a highly active adsorption material and is an amorphous substance. The main component of silica gel is silica, which is chemically stable and does not burn.

Generally speaking, silica gel can be divided into two categories: organic silica gel and inorganic silica gel according to its properties and components. Inorganic silica gel is a highly reactive adsorption material.

Silica gel is divided into macroporous silica gel, coarse-pore silica gel, B-type silica gel, and fine-porous silica gel according to the size of its pore size. Because the pore structure is different, their adsorption properties are also different.

How many degrees can high-temperature resistant silica gel withstand.

Silicone can withstand high temperatures up to 350 degrees. Ordinary silica gel can withstand high temperatures between 200 and 300 degrees Celsius, and the maximum temperature can reach about 350 degrees Celsius in a short period of time, such as within two hours, and is often used for silica gel with special performance requirements. High-temperature silica gel is generally divided into high-temperature resistant solid silica gel and high-temperature resistant liquid silica gel, liquid silica gel should be kept in a liquid state, and the amount of heat-resistant filler added will be less than that of solid silica gel, so in general, solid silica gel is more resistant to high temperature and easier to do.

High-temperature silica gel is a kind of product specially designed for the operation of high temperatures, which is formed with a relatively special formula, which does not change the original low-temperature resistance of silica gel, so the application range of high-temperature resistant silica gel is relatively wide, and it is suitable for the production of various high-temperature seals, sealant silicone electric heating pipes, high-temperature furnace accessories and rubber rollers and other products.