Views: 7600 Author: Site Editor Publish Time: 2017-02-08 Origin: Site
HDPE high density polyethylene sheet(HDPE sheet) corrosion-resistant PE sheet wear-resistant PE sheet manufacturer
High Density Polyethylene Board(HDPE board):
1. High wear resistance: One of the remarkable properties of improving molecular weight polyethylene is that it has extremely high wear resistance, and even the regular wear resistance of many metal materials (such as carbon steel, stainless steel, bronze, etc.) is not as good as it. As the molecular weight of polyethylene increases, the material becomes more wear-resistant.
2. Extremely high impact resistance: The impact strength of UHMWPE is related to its molecular weight. When the molecular weight is lower than 2 million, the impact strength increases with the increase of the molecular weight, and reaches a peak at about 2 million. After that, the impact strength will decrease when the molecular weight increases again. This is because the molecular chain is abnormal and hinders its photocrystallization, so that there is a large amorphous region in the macromolecule, which can absorb a large impact energy. UHMWPE still has very good impact resistance even at a low temperature of -40oC, and even at a liquid gas temperature of -269oC, it can still maintain good impact resistance. The application of molecular weight polyethylene is extended to the field of low temperature engineering.
3. Low coefficient of friction: UHMWPE is very wear-resistant, has low coefficient of friction and good self-lubrication, and is an ideal material for bearing bushings, sliders and linings. The use of ultra-high molecular weight polyethylene as the friction part of the equipment can not only improve the wear-resistant life, but also save energy.
4. Good chemical corrosion resistance: UHMWPE has good chemical corrosion resistance. Except for concentrated sulfuric acid, it will not be corroded in all lye and acid solutions, and can be used at temperatures (80oC). Applied in concentrated hydrochloric acid, it is also stable in <20% nitric acid lt; 75% sulfuric acid, and it is also stable in water and liquid washing.) However, ultra-high molecular weight polyethylene is used in aromatic or halogenated compounds ( Especially in the condition of high temperature) it is easy to swell, so special attention should be paid to the application.
5. Very low water absorption: UHMWPE has a very low water absorption rate, it almost does not absorb water, does not swell in water, and is much less absorbent than nylon.
