Pengenalan ringkas bahan paip hdpe
Jan 16, 2022
High density polyethylene, the English name is "High Density Polyethylene", referred to as "HDPE". HDPE is a highly crystalline, non-polar thermoplastic resin. The appearance of the original HDPE is milky white, and it is translucent to a certain extent in the thin section. PE has excellent resistance to most household and industrial chemicals. Certain types of chemicals are chemically aggressive, such as corrosive oxidants (concentrated nitric acid), aromatic hydrocarbons (xylene), and halogenated hydrocarbons (carbon tetrachloride). The polymer is non-hygroscopic and has good water vapour resistance for packaging applications. HDPE has good electrical properties, especially high insulation dielectric strength, making it very suitable for wires and cables. Medium to high molecular weight grades have excellent impact resistance at ambient temperatures and even as low as -40F.
Walaupun HDPE diperkenalkan pada tahun 1956, plastik itu masih belum mencapai kematangan. Bahan serba boleh ini sentiasa dibangunkan untuk kegunaan dan pasaran baharu.
PE boleh dihasilkan dengan pelbagai kaedah pemprosesan yang berbeza. Ini termasuk, sebagai contoh, penyemperitan kepingan, penyemperitan filem, penyemperitan paip atau profil, pengacuan tamparan, pengacuan suntikan dan pengacuan putaran.
