Paip HDPE Ketahanan Terhadap Prestasi

High-density polyethylene, the English name is "High Density polyethylene", referred to as "HDPE." HDPE is a kind of thermoplastic resin with high crystallinity and non-polar. The appearance of the original HDPE is milky white, a certain degree of translucent in the meager section. PE has excellent resistance to most of the properties of living and industrial chemicals. Certain types of chemicals can produce chemical corrosion,HDPE Pipe such as corrosive oxidants (concentrated nitric acid), aromatic hydrocarbons (xylene) and halogenated hydrocarbons (carbon tetrachloride). The polymer is not hygroscopic and has good water vapor resistance and can be used for packaging purposes. HDPE has good electrical properties, especially the high dielectric strength,HDPE Pipe so it is suitable for wire and cable. Medium to high molecular weight grade has excellent impact resistance, at room temperature even at -40f low temperature.

HDPE adalah poliolefin termoplastik yang dihasilkan oleh kopolimerisasi etilena. Walaupun HDPE diperkenalkan pada tahun 1956, plastik tersebut belum mencapai tahap kematangannya. Bahan generik ini juga terus mengembangkan penggunaan dan pasaran barunya. daripada resin termoplastik. Penampilan HDPE asli berwarna putih susu, tahap lut sinar tertentu di bahagian yang sedikit. PE mempunyai ketahanan yang sangat baik terhadap sebahagian besar sifat kimia hidup dan industri. Jenis bahan kimia tertentu boleh menghasilkan kakisan kimia, Pipa HDPE seperti pengoksidaan korosif (asid nitrik pekat), hidrokarbon aromatik (xilena) dan hidrokarbon halogenasi (karbon tetraklorida). Polimer tidak bersifat hygroscopic dan mempunyai ketahanan wap air yang baik.

PE can be made with a wide variety of processing methods. Includes such as sheet extrusion, film extrusion, pipe or profile extrusion, blow molding, injection molding and roll molding.

Paip HDPE adalah paip keluli tradisional, produk penggantian paip air minuman PVC.

Pipa HDPE mesti menahan tekanan tertentu, biasanya untuk memilih berat molekul yang besar, sifat mekanik yang baik dari resin PE, seperti resin HDPE. Kekuatan tegangan resin LDPE rendah, tekanannya lemah, ketegarannya lemah, kestabilan dimensi buruk ketika membentuk, dan sambungannya sukar, yang tidak sesuai sebagai bahan paip tekanan bekalan air. Namun, kerana indeks kesihatannya yang tinggi, LDPE terutama resin LLDPE telah menjadi bahan biasa untuk pengeluaran paip air minuman. LDPE, kelikatan pencairan resin LLDPE kecil, kelancaran yang baik, mudah diproses, jadi pemilihan julat Melt Indexnya juga lebih luas, biasanya mi dalam 0.3-3g / 10min.

Sifat kimia

Polyethylene resistance to a variety of organic solvents,HDPE Pipe resistance to a variety of acid-base corrosion, but not antioxidant acid, such as nitric acid. Polyethylene is oxidized in an oxidizing environment.

Fizikal

Polyethylene can be considered transparent in a thin film state, but in the presence of massive crystals there is a strong light scattering and opacity. The degree of polyethylene crystallization is affected by the number of branches, the more the branch chain, the more difficult the crystallization. The melting temperature of polyethylene is also affected by the number of branches,HDPE Pipe which is distributed from 90 degrees Celsius to 130 degrees Celsius, the more the branch chain melts the lower the temperature. Polyethylene single crystals can usually be prepared by dissolving high density polyethylene in an environment above 130 degrees Celsius.