Rubber: Rubber (Rubber) refers to a highly elastic polymer material with reversible deformation. It is elastic at room temperature, can produce large deformation under a small external force, and can return to its original shape after the external force is removed. Rubber is divided into two kinds of natural rubber and synthetic rubber.

Silica gel: Silica gel alias: silicic acid gel, is a kind of highly active adsorption material, which is an amorphous substance.

Difference Between Rubber and Silica gel  

Rubber is divided into natural rubber and synthetic rubber. The structure of natural rubber is a high polymer of isoprene, and synthetic rubber such as butadiene rubber, neoprene rubber, and styrene-butadiene rubber. When the cross-linked rubber is deformed by external force, it has the ability of rapid recovery, and has good physical and mechanical properties and chemical stability.

The main composition of silicone rubber is linear polysiloxane with high molar mass. Since the Si-O-Si bond is the basic bond type, the silicon atom is mainly connected to the methyl group, and a very small amount of unsaturated groups are introduced into the side chain. The intermolecular force is small, and the molecule is in a helical structure. Outer arrangement and free rotation, so silicone rubber after vulcanization has excellent high and low temperature resistance (-100~315 ℃), weather resistance, water repellency, electrical insulation, physiological inertia and other characteristics, it is widely used in national defense, medical and health, industry and agriculture It has been widely used in production and people's daily life. The most important thing is that it is not toxic, as it is commonly used in pacifiers and breast augmentation fillers.

1. The scope of the two definitions is different. Rubber is a general term that includes many types, such as natural rubber, butadiene rubber, styrene-butadiene rubber, propylene rubber, and of course silicone rubber; and silicone rubber is one of the specific varieties of rubber.

2. Rubber has a wide range of uses, mainly using the elastic effect of rubber, such as rubber tires, bridge shock absorption, rubber hose rubber rollers, etc., mainly in industrial applications; silica gel is mostly used in food and household appliances, such as Pacifiers, spoons for children, pressure cooker seals, etc.

3. Different types and grades of rubber are used differently. For example, natural rubber is mainly used for tires, butyl rubber is mainly used for inner tubes, and EPDM rubber is used for sealing products.

4. When choosing rubber, it needs to be based on specific performance index requirements, such as hardness, tensile strength, compression deformation, wear, tear, use environment, etc. From their properties, we can see that silicone rubber has the incomparable superiority of ordinary rubber. The price of silicone rubber is more expensive. Which one is better depends on our use. If ordinary rubber products can meet our needs, There is no need to use a sledgehammer to kill chickens, and use silicone with better performance and higher prices.

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