The performance of polyethylene sheet is much better than that of general engineering plastics, mainly because the key polyethylene sheet has a high melting point, wear resistance, heat resistance, and is widely used, because its ignition point is very high, then it is also widely used as a fire shield, which can be automatically wiped out from 3-10 seconds after separating the open fire, and does not drop, and the smoke amount is particularly small. Evaporating vapor is not harmful to human health, after... After the inspection of the fireproof materials research office, the board was assessed as green and energy-saving raw materials, and the polyethylene board had high promotion and value.
Polyethylene sheet has very low water absorption, and its water absorption is very low, it seems to be non-moisture absorption, water absorption is basically 0, does not swell in water, and the water absorption is much smaller than polyester. In addition, we also need to understand that polyethylene sheet has very good electrical properties in a wide temperature range, its volume resistance reaches 10-18 cubic power, the breakdown field strength reaches 50KV/mm, and the relative dielectric constant is 2.3. In a relatively wide temperature and operating frequency band, its electrical performance changes little. In the range of high temperature resistance, it is suitable for electrical professional material structure and raw materials for paper mills.
The common classification of polyethylene sheet is that one is a linear structure, and the polymer chemicals with such a structure are called linear polymer compounds; The other is the body structure, and the polymer combination with such a structure is called the body polymer chemical substance. Some polymers contain carbon bonds, called carbon bond polymers, which belong to linear structures. In addition, we should also understand that although there are chemical crosslinks between molecular structures, there are fewer chemical crosslinks, which is called the network structure and belongs to the body structure.
