Specializing in the production and processing of polymer polyethylene clean cutting board

UHMWPE is an excellent system performance engineering plastics, such as high plate wear and impact resistance, low friction coefficient, good self-lubricating properties, excellent resistance to temperature, resistance to chemical corrosion. 1, to improve the wear resistance. The most striking increase in molecular weight polyethylene, a performance is that it has a very high wear resistance, this performance has many engineering applications are very valuable. In the present, all plastic, its wear resistance is the best, even many metal materials (such as carbon steel, stainless steel, bronze, etc.) are not as regular grind it. As the molecular weight of the polyethylene increases, the more such materials wear. 2, a very high impact resistance. When UHMWPE impact strength, and its molecular weight about, a molecular weight of less than 2,000,000, along with molecular weight increase, increased impact strength, around 2,000,000 reaches a peak, then after the peak, the molecular weight and then increased but the impact strength will decline. This is because when the molecular chain is very hindered its optical crystal effect, so that there is a large region in the amorphous macromolecule which can absorb a large impact energy. According to the literature, the impact strength of UHMWPE and other plastics according to ASTM-D256 method for determining from the comparison drawn: UHMWPE room temperature impact resistance can be divided into the known polycarbonate impact resistant ester comparable applied commonly used engineering plastics. UHMWPE even with low temperatures below -40oC, there is still ridiculed impact resistance, even at liquid-gas -269oC temperature, can still maintain a good impact resistance, excellent low temperature properties which make ultrahigh molecular weight polyethylene, low-temperature applications to the engineering field. 3, a very low coefficient of friction. UHMWPE is very resistant, and low coefficient of friction, good self-lubricating, is an ideal bearing bushings, slider, lining materials. Use UHMWPE as friction parts of the device, in addition to improve wear life, it can also receive energy-saving effect. 4, good chemical resistance. Ultra-high molecular weight polyethylene has good chemical resistance properties, in addition to concentrated nitric acid, concentrated sulfuric acid, it will not corrode at all lye, acid, and can (80oC application of concentrated hydrochloric acid at a temperature in <20% nitric acid, <75% sulfuric acid is stable, its water, washing liquid is stable.) However, ultrahigh molecular weight polyethylene (especially high in the halogenated aromatic material or a compound material at a temperature Under the conditions) can easily swell, so pay special attention to the application. 5, low water absorption. UHMWPE water absorption is very low, it is almost non-absorbent, does not swell in water, much less absorbent than nylon. 6, thermal properties. Determined by ASTM (load 4.6kg / cm2) method, heat distortion temperature of 85oC, at a smaller load, temperature up to 90oC, in exceptional circumstances, allowing the use at higher temperatures due to the ultra-high molecular weight Polyethylene is a material excellent in toughness, so its performance is very excellent in low-resistance, low temperature at -269oC, still has some ductility, but no signs of embrittlement. 7, the electrical properties. UHMWPE over a wide temperature range, has very excellent electrical properties, its volume resistivity of 10-18CM, the breakdown voltage of 50KV / mm, a dielectric constant of 2.3. Over a wide temperature and frequency range, its electrical properties change little. In the heat temperature range, it is suitable for use as structural materials in electrical engineering and mill material. 8, non-toxic high molecular weight polyethylene, tasteless, non-toxic, odorless, non-corrosive itself, through physiological and physiological adaptation, the US Food and Drug Administration (FDA) and the US Department of Agriculture (USDA) to allow it to use in contact with food and medicine applications. It is these characteristics, in particular abrasion resistance, impact resistance, self-lubricating properties, in engineering plastics are the best.