Rubber and Silicone Difference
Rubber is divided into natural rubber and synthetic rubber, the structure of the natural rubber is isoprene polymers, synthetic rubbers such as malebutadiene rubber, chloroprene rubber, styrene-butadiene rubber and so on. Crosslinked rubber deformation by external forces, has the ability to quickly recover, and has good physical and mechanical properties and chemical stability.
Silicone rubber is mainly composed of high molar mass linear polysiloxane. Search due to the Si-O-Si bond is the basic bond type of its composition, the silicon atom is mainly connected to the methyl, the introduction of a very small number of unsaturated groups on the side chain, the intermolecular force is small, the molecule is a helical structure, the methyl outwardly arranged and can be free to rotate, so the silicone rubber vulcanized with excellent resistance to high and low temperatures (-100 ~ 315 ℃), weathering, water-repellent, electrical insulation, physiological inertia, etc., in the defense, military industry, medical and health, industry and agriculture. It is widely used in national defense, military industry, medical and health care, industrial and agricultural production and people's daily life. The most important thing is that there is no toxicity, like pacifiers, breast augmentation fillers in common use.
1, the two definitions of different ranges. Rubber is a general term, including many types, such as natural rubber, butadiene rubber, styrene butadiene rubber, has been propylene rubber, of course, including silicone rubber; and silicone is one of the specific varieties of rubber.
2, rubber has a wide range of uses, mainly the use of rubber's elasticity, such as rubber tires, bridge vibration damping, hose rubber rollers, etc., mainly in the industrial aspects of the use of the main; Silicone is mostly used in the food life on the electrical appliances, such as pacifiers, children's spoons, voltage pots and pans sealing and so on.
3, different types and grades of rubber applications are different, such as natural rubber is mainly used to make tires, butyl rubber is mainly used to make inner tubes, EPDM rubber sealing products.
4, in the selection of rubber, need to be based on specific performance indicators, such as hardness, tensile strength, compression deformation, abrasion, tearing, use of the environment and so on.
From their nature, we can see that silicone rubber has an unparalleled superiority of ordinary rubber, silicone rubber price is more expensive, which is better, it depends on our use, if the ordinary rubber products can meet our needs, there is no need to kill the chicken with a bull's-eye, the use of better performance, the price is higher silicone.
Silicone and rubber which is good
Rubber is a highly elastic polymer compounds. Because of its unique high elastic properties, it is also known as elastomer. The main characteristics of rubber materials are: can maintain excellent elasticity in a wide range of temperatures. Elongation is large and small modulus of elasticity.
Rubber is divided into natural rubber and synthetic rubber two categories. Synthetic rubber can be general synthetic rubber and special synthetic rubber. General synthetic rubber including styrene butadiene rubber, butyl rubber, neoprene rubber, butyl rubber, polyisoprene rubber, ethylene propylene rubber, butyl rubber, etc.. Special synthetic rubber including: silicone rubber (i.e. silicone), fluorine rubber, propylene glycol rubber, polyurethane rubber, chlorinated polyethylene, chlorohydrin rubber. Polysulfide rubber and so on.
Silicone as a rubber has a high and low temperature resistance, weather resistance, ozone resistance, non-toxic environmental protection and other characteristics. Silicone and rubber can not say which is good, can only say that the application of the appropriate aspects of the good.
Silicone rubber is an emerging high-tech materials, initially only used in aviation, military field, now widely used in electrical and electronic, textile, automotive, machinery, leather and paper, metal, paint, medicine, medical, supporting electrical appliances, electronics, toys, hardware, medical equipment, sporting goods, audio, lighting, machinery, automotive and other industries. Material properties: non-toxic, environmentally friendly, physiologically inert, UV resistance, ozone resistance, stamping resistance, acid and alkali resistance, abrasion resistance, flame retardant, voltage resistance, electrical conductivity, and other areas.
Silicone rubber is mainly based on high-temperature vulcanization of the processing form: the most common are molded products, liquid filling, extrusion molding, calendering and other processing technology production. Such as a variety of rubber plates, gaskets, bowls, flaps, film, shock absorbers, electrical plugs, rubber rollers, potentiometer insulation sets, waveguide, silicone cell phone cases and keys, etc.; extruded products in a variety of tubes, rubber strips, rubber ropes, wire and cable wraps, tape products in the gaskets, diaphragms, isolation cloth and other products.