Lightweight plastics are lighter materials with relative densities ranging from 0.90 to 2.2. Apparently, plastic can float to the surface? Especially foamed plastics, because of the micropores inside, the texture is lighter and the relative density is only 0.01. This characteristic makes plastics can be used in the production of products that require weight reduction.

Excellent chemical stability The vast majority of plastics have good corrosion resistance to acids, alkalis and other chemicals. Especially polytetrafluoroethylene (F4), which is commonly known as the king of plastics, is even more chemically stable than gold, and it will not deteriorate after being boiled in water for more than ten hours. Because F4 has excellent chemical stability, it is an ideal corrosion-resistant material.

For example, F4 can be used as a material for pipelines transporting corrosive and viscous liquids. It has excellent electrical insulation properties. Ordinary plastics are poor conductors of electricity. The breakdown voltage is large, and the dielectric loss tangent is small. Therefore, plastics are widely used in the electronics and machinery industries. Such as plastic insulated control cables.

Poor conductor of heat, has the effect of noise reduction and shock absorption Generally speaking, the thermal conductivity of plastic is relatively low, equivalent to 1/75-1/225 of steel, and the micropores of foam plastic. Containing gas, its heat insulation, sound insulation and shock resistance are better. For example, the thermal conductivity of polyvinyl chloride (PVC) is only 1/357 of steel and 1/1250 of aluminum. In terms of heat insulation, single-glass plastic windows are 40% higher than single-glass aluminum windows, and double-glass windows are 50% higher. After combining the plastic window with the insulating glass, it can be used in residential buildings, office buildings, sick rooms, and hotels. The benefits of saving heating in winter and saving air-conditioning expenses in summer are very obvious.