What's the difference between natural rubber and synthetic rubber?

1. Different ingredients:

Synthetic rubber is a synthetic polymer with high elasticity. Also known as synthetic elastomer, is one of the three major synthetic materials, its output is only under synthetic resin (or plastic), synthetic fiber. The classification method is diverse, has a long history of development, and has broad research prospects.

Natural rubber (NR) is a kind of natural polymer compound with cis-1, 4-polyisoprene as the main component. 91% ~ 94% of its components are rubbery hydrocarbon (cis-1, 4-polyisoprene), and the rest are non-rubbery substances such as protein, fatty acid, ash and sugar. Natural rubber is the most widely used universal rubber.

2, different performance:

Natural rubber, at room temperature has high elasticity, good electrical insulation performance, natural rubber has strong alkali resistance, but not strong acid resistance.

Synthetic rubber, relatively not so good, but it still has high elasticity, insulation, oil resistance, high temperature resistance and other properties. It's pretty widely used.

3. Different uses

Synthetic rubber is widely used in industry and agriculture, national defense, transportation and daily life; Natural rubber used in daily life rain shoes, warm water bags, elastic belt, conveyor belt, transport belt, acid and alkali resistant gloves, even rockets, artificial earth satellites and spacecraft and other sophisticated scientific and technological products.

4. Different physical properties:

Synthetic rubber:

Its properties vary with different monomers, and a few varieties have similar properties to natural rubber. Some synthetic rubber has better temperature resistance, wear resistance, aging resistance, corrosion resistance or oil resistance than natural rubber.

Natural rubber:

High elasticity at room temperature, slightly plastic, crystallization hardening at low temperature. It has good alkaline resistance, but not strong acid resistance. Insoluble in water, low ketones and alcohols, in non-polar solvents such as trichloromethane, carbon tetrachloride can swell.