? 超高分子量聚乙烯的英文是：Ultra?High?Molecular?Weight?Polyethylene，?這是現(xiàn)有的最優(yōu)質(zhì)的可應(yīng)用于惡劣工作環(huán)境及多種用途的聚乙烯。在許多高難度的應(yīng)用條件下適用性非常好。,超高分子量是這種象合物與眾不同的特質(zhì)，其具有300至600萬的分子星，而高密度類乙烯樹脂只有30萬至50萬。這種差別是保證超高分子星聚乙烯具備足路的強度，以達到其他低等聚合產(chǎn)品所不可能具備的耐磨損和抗沖擊能力。傳統(tǒng)的塑料加工技術(shù)，比如注塑成型。吹塑和熱定型，無法應(yīng)用于超高分子量聚乙烯。擠壓成型是應(yīng)用于最常見的加工工藝，這樣生產(chǎn)出來的產(chǎn)品韌性極強。

? 超高分子聚乙烯耐磨板在水泥廠、電廠等企業(yè)的的用途非常大，這些企業(yè)生產(chǎn)時的工作環(huán)境惡劣，普通板材很難適應(yīng)這種工作環(huán)境，所以需要經(jīng)常的維修更換。超高分子聚乙烯耐溶板出現(xiàn)之后，為企業(yè)解決了這個問題。

高分子聚乙烯產(chǎn)品特點

（1） 耐磨特性，抗滑動摩擦能力強。超高分子量聚乙烯管耐磨性高于一般的鋼管4-7倍，不銹鋼的27.3倍。是酚醛樹脂的17.9倍，尼龍六的6倍，聚乙烯的4倍，年磨損率平均值0．58㎜ ,提高了管道的使用壽命。

（2） 耐沖擊性，在現(xiàn)有的工程塑料中超高分子量聚乙烯的沖擊韌性值高，其抗沖擊強度常溫下是PE100的10倍以上。隨著環(huán)境溫度的降低，其抗沖擊性能越強。

（3） 耐腐蝕性能，能耐絕大多數(shù)腐蝕性介質(zhì)和有機溶劑的侵蝕，超高分子量聚乙烯可以在濃度小于80%的濃鹽酸中應(yīng)用，在濃度小于75%的硫酸、濃度小于20%的硝酸中性能相當穩(wěn)定。

（4） 自潤性，自身滑動性能優(yōu)于用油潤滑的鋼或黃銅。在環(huán)境惡劣、粉塵、泥沙多的地方，超高分子量聚乙烯管自身干潤滑性能更好。能運動自如，保護相關(guān)工件不磨損或拉傷。摩擦系數(shù)只有0.07~0.12，是普通PE的1/5，新鋼管的1/6，橡膠的1/20。

（5） 無毒性，超高分子量聚乙烯材料是環(huán)保材料，無毒無味、防污抗蛀新型熱塑性工程塑料。美國食品管理局（FDA）和美國農(nóng)業(yè)部（USDA）允許它用于與食品接觸的場合。中國許多城市的主供排水道管都改用超高分子量聚乙烯管。

（6）耐低溫性、抗老化，超高分子量聚乙烯管可長期在-269℃到80℃的溫度下工作，由于分子鏈中不飽和分子團很少，分子量大，穩(wěn)定性高，老化速度特別緩慢，使用壽命加長。

（7） 表面非附著性、不結(jié)垢，超高分子量聚乙烯管由于摩擦系數(shù)小和無極性，具有表面非附著性。

（8） 抗開裂性最優(yōu)，超高分子量聚乙烯管通過拉伸試驗證明，它具有100~300%的延伸率，在承受巨大的外壓和內(nèi)壓時或者是彎曲應(yīng)力也能保持一定的變形而不斷裂。

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.