Compared with other material fasteners, plastic fasteners have the following performance characteristics:
1. Light weight. Plastics are lighter materials with relative density ranging from 0.90 to 2.2. Obviously, can plastic float on the water? Especially for foamed plastics, the relative density of foamed plastics is only 0.01 because of its micropore and lighter texture. This characteristic enables plastics to be used in the production of products requiring reduced self-weight.
2. Excellent chemical stability. Most plastics have good corrosion resistance to acid, alkali and other chemical substances. Especially PTFE (F4), commonly known as Plastic King, has better chemical stability than gold. It will not deteriorate if boiled in "aqua regia" for more than ten hours. Because of its excellent chemical stability, F4 is an ideal corrosion resistant material. For example, F4 can be used as a material for conveying corrosive and viscous liquid pipelines.
3. Excellent electrical insulation performance. Ordinary plastics are all poor conductors of electricity. Their surface resistance and volume resistance are very large, which can reach 109-1018 ohms in digital form. The tangent value of dielectric loss angle is very small when the breakdown voltage is large. Therefore, plastics are widely used in electronic and mechanical industries. For example, plastic insulated control cables.