@耐磨高分子量聚乙烯板材UHMWPE板加工耐磨板
超高分子量聚乙烯的英文是：Ultra High Molecular Weight Polyethylene， 这是现有的最优质的可应用于恶劣工作环境及多种用途的聚乙烯。在许多高难度的应用条件下适用性非常好。,超高分子量是这种象合物与众不同的特质，其具有300至600万的分子星，而高密度类乙烯树脂只有30万至50万。这种差別是保证超高分子星聚乙烯具备足路的强度，以达到其他低等聚合产品所不可能具备的耐磨损和抗冲击能力。传统的塑料加工技术，比如注塑成型。吹塑和热定型，无法应用于超高分子量聚乙烯。挤压成型是应用于最常见的加工工艺，这样生产出来的产品韧性极强。
超高分子聚乙烯耐磨板在水泥厂、电厂等企业的的用途非常大，这些企业生产时的工作环境恶劣，普通板材很难适应这种工作环境，所以需要经常的维修更换。超高分子聚乙烯耐溶板出现之后，为企业解决了这个问题。
高分子聚乙烯产品特点
（1） 耐磨特性，抗滑动摩擦能力强。超高分子量聚乙烯管耐磨性高于一般的钢管4-7倍，不锈钢的27.3倍。是酚醛树脂的17.9倍，尼龙六的6倍，聚乙烯的4倍，年磨损率平均值0．58㎜ ,提高了管道的使用寿命。
（2） 耐冲击性，在现有的工程塑料中超高分子量聚乙烯的冲击韧性值高，其抗冲击强度常温下是PE100的10倍以上。随着环境温度的降低，其抗冲击性能越强。
（3） 耐腐蚀性能，能耐绝大多数腐蚀性介质和有机溶剂的侵蚀，超高分子量聚乙烯可以在浓度小于80%的浓盐酸中应用，在浓度小于75%的硫酸、浓度小于20%的硝酸中性能相当稳定。
（4） 自润性，自身滑动性能优于用油润滑的钢或黄铜。在环境恶劣、粉尘、泥沙多的地方，超高分子量聚乙烯管自身干润滑性能更好。能运动自如，保护相关工件不磨损或拉伤。摩擦系数只有0.07~0.12，是普通PE的1/5，新钢管的1/6，橡胶的1/20。
（5） 无毒性，超高分子量聚乙烯材料是环保材料，无毒无味、防污抗蛀新型热塑性工程塑料。美国食品管理局（FDA）和美国农业部（USDA）允许它用于与食品接触的场合。中国许多城市的主供排水道管都改用超高分子量聚乙烯管。
（6）耐低温性、抗老化，超高分子量聚乙烯管可长期在-269℃到80℃的温度下工作，由于分子链中不饱和分子团很少，分子量大，稳定性高，老化速度特别缓慢，使用寿命加长。
（7） 表面非附着性、不结垢，超高分子量聚乙烯管由于摩擦系数小和无极性，具有表面非附着性。
（8） 抗开裂性最优，超高分子量聚乙烯管通过拉伸试验证明，它具有100~300%的延伸率，在承受巨大的外压和内压时或者是弯曲应力也能保持一定的变形而不断裂。
Ultra High Molecular Weight Polyethylene (UHMWPE) is the highest quality polyethylene available, which can be used in harsh working environments and multiple purposes. It is very applicable under many difficult application conditions., Ultra-high molecular weight is the distinctive characteristic of this complex, which has molecular stars of 3 to 6 million, while high-density vinyl resin has only 300000 to 500000. This difference is to ensure that ultrahigh molecular star polyethylene has sufficient strength to achieve the wear resistance and impact resistance that other low-grade polymer products cannot have. Traditional plastic processing technology, such as injection molding. Blow molding and heat setting cannot be applied to UHMWPE. Extrusion molding is the most common processing technology applied to produce products with strong toughness.
Features of polymer polyethylene products
(1) Wear-resistant property, strong sliding friction resistance. The abrasion resistance of UHMWPE pipe is 4-7 times higher than that of ordinary steel pipe and 27.3 times higher than that of stainless steel. It is 17.9 times that of phenolic resin, 6 times that of nylon 6, and 4 times that of polyethylene. The average annual wear rate is 0.58 mm, which improves the service life of the pipeline.
(2) Impact resistance: among the existing engineering plastics, UHMWPE has a high impact toughness value, and its impact strength is more than 10 times that of PE100 at room temperature. With the decrease of ambient temperature, its impact resistance becomes stronger.
(3) Corrosion resistance: it can resist the corrosion of most corrosive media and organic solvents. Ultra-high molecular weight polyethylene can be used in concentrated hydrochloric acid with concentration less than 80%, and its performance is quite stable in sulfuric acid with concentration less than 75% and nitric acid with concentration less than 20%.
(4) Self-lubricating property and self-sliding performance are better than steel or brass lubricated with oil. In places with harsh environment, dust and sediment, UHMWPE pipes have better dry lubrication performance. It can move freely and protect relevant workpieces from wear or strain. The friction coefficient is only 0.07~0.12, which is 1/5 of ordinary PE, 1/6 of new steel pipe and 1/20 of rubber.
(5) Non-toxic, ultra-high molecular weight polyethylene material is environmental protection material, non-toxic, odorless, antifouling and moth-resistant new thermoplastic engineering plastics. The United States Food Administration (FDA) and the United States Department of Agriculture (USDA) allow it to be used in situations where it comes into contact with food. The main water supply and drainage pipes in many cities in China are changed to UHMWPE pipes.
(6) Low temperature resistance and aging resistance. Ultra high molecular weight polyethylene pipe can work at the temperature of - 269 ℃ to 80 ℃ for a long time. Because there are few unsaturated molecular groups in the molecular chain, the molecular weight is large, the stability is high, the aging speed is particularly slow, and the service life is longer.
(7) The surface is nonadhesive and non-scaling. The UHMWPE pipe has surface nonadhesiveness due to its small friction coefficient and non-polarity.
(8) The cracking resistance is the best. The tensile test of UHMWPE pipe has proved that it has an elongation of 100~300%, and it can maintain certain deformation without fracture under the huge external and internal pressure or bending stress.
