What are the characteristics of organic polymer materials?

1, low density-much lighter than steel and copper, equivalent to aluminum and magnesium, which is beneficial to the lightweight of electromechanical products.

2. Sufficient strength and modulus-it can replace some metal materials to manufacture various mechanical parts.

3. Excellent electrical (insulation) performance-it plays an important role in promoting insulation in motors, electrical appliances, instruments, wires and cables. Adding appropriate conductive materials can become special conductive materials.

4. Excellent antifriction, wear resistance and self-lubrication performance-Many polymer materials can work in liquid media under dry friction conditions with little or no oil, and their performance is even better than that of metals.

Extended data

Polymer materials are more and more widely used in machinery industry, and "replacing steel with plastic" and "replacing iron with plastic" have become the focus and hot spot of material science research at present. This research broadens the range of material selection, and makes mechanical products change from traditional safety, bulkiness and high consumption to safety, portability, durability and economy. Such as polyurethane elastomer, the wear resistance of polyurethane elastomer is particularly prominent, and its wear resistance is lower than other materials in some organic solvents such as kerosene and mortar mixture.

Polyurethane elastomer can be made into impeller and cover plate of flotation machine, which is widely used in flotation machine with abrasive wear. Another example is polyoxymethylene material, which has outstanding wear resistance and less year-on-year wear on metal than nylon. It is modified by PTFE, engine oil, disulfide bonds and chemical lubrication. It has good mechanical properties and wear resistance, and the friction coefficient and wear amount are small.

Polyoxymethylene is widely used to manufacture various gears, bearings, cams, nuts, various pumps and structural parts of guide rails. In the automobile industry, it can replace non-ferrous metals such as zinc, copper and aluminum, as well as cast iron and steel stamping parts.