超高分子量聚乙烯PE管化工用液体输送管道超高耐磨管的计算方法

Calculation method of ultra high molecular weight polyethylene PE pipe for chemical liquid transportation pipeline

比重法Specific gravity method

纯超高分子量聚乙烯（UHMW PE）产品的比重在0.93-0.95之间，比水轻，能浮于水面。填加其它材料的超高分子量聚乙烯（UHMW PE）产品，其比重将改变。

The specific gravity of pure ultra high molecular weight polyethylene (UHMW PE) is between 0.93-0.95, which is lighter than water and can float on the water surface. The specific gravity of ultra high molecular weight polyethylene (UHMW PE) products filled with other materials will change.

真正的纯超高分子量聚乙烯产品，在摄氏200度时是不会熔化的，不会变形，但会变软， 填加其它材料的超高分子量聚乙烯产品，在摄氏200度时是会有变形的。

Real pure UHMWPE products will not melt and deform at 200 ℃, but will become soft. UHMWPE products filled with other materials will deform at 200 ℃.

超高分子量聚乙烯PE管化工用液体输送管道超高耐磨管的性能：

Performance of ultra-high molecular weight polyethylene PE pipe and ultra-high wear-resistant pipe for chemical liquid transmission pipeline:

【1】极高的耐磨特性，UHMW-PE制品的独特分子结构，使它具有极高的抗滑动摩擦能力。耐磨性高于一般的合金钢6.6倍，钢管的4-7倍。

【2】极高的耐冲击性，在现有的工程塑料中本产品的冲击韧性值最高，本产品按GB1843标准，进行悬臂梁冲击实验达到无破损。

【3】优良的化学稳定性，本产品可以耐烈性化学物质的侵蚀，除对某些强酸在高温下有轻微腐蚀外，在其它的碱液、酸液中不受腐蚀。

【1】 High wear resistance and unique molecular structure of UHMW-PE products make it have high sliding friction resistance. The wear resistance is 6.6 times higher than that of general alloy steel and 4-7 times higher than that of steel pipe.

【2】 High impact resistance. Among the existing engineering plastics, the impact toughness value of this product is the highest. The cantilever impact test of this product is carried out according to GB1843 standard to achieve no damage.

【3】 Excellent chemical stability. This product can resist the corrosion of strong chemicals. It will not be corroded in other alkali and acid liquids except some strong acids under high temperature.

【4】良好的自润滑性，由于本产品内含蜡状物质，且自身润滑很好。摩擦系数（196N，2小时）仅为0.219MN/m（GB3960），因此不但能运动自如，且保护相关工件不磨损或拉伤。

【5】独特的耐低温性，本品耐低温性能优异，其耐冲击性、耐磨性在零下269摄氏度时基本不变。是唯一可在接近绝对零度的温度下工作的一种工程塑料。

【6】不易结垢性，本品由于摩擦系数小和无极性，因此具有很好的表面非附着性。

【7】耐环境应力开裂性最优;弹性模量是PE100的1.5倍以上； 抗疲劳强度50万次。

【4】 Good self lubrication, because this product contains waxy substances and has good self lubrication. The friction coefficient (196N, 2h) is only 0.219mn/m (gb3960), so it can not only move freely, but also protect relevant workpieces from wear or strain.

【5】 Unique low temperature resistance. This product has excellent low temperature resistance. Its impact resistance and wear resistance are basically unchanged at minus 269 ℃. It is the only engineering plastic that can work at a temperature close to absolute zero.

【6】 It is not easy to scale. Due to the small friction coefficient and non polarity, this product has good surface non adhesion.

【7】 The environmental stress cracking resistance is the best; The elastic modulus is more than 1.5 times that of PE100; The fatigue strength is 500000 times.

采用淤浆法工艺,可用Mg-Ti高效催化剂,可进行间歇聚合,长期运转不需清釜,聚合产物可达较高分子量, (4.8～5百万)。规模在年产1000吨的装置,投资约700万元。界区内约450万,投资回收期在二年内。产品规格及指标:500万及350万分子量。特性粘度2200ml/g,密度0.935-0.945g/ml,堆密度0.35-0.4g/ml。冲击强度≥150KJ/平方米,抗拉强度30～40MPa。断裂伸长率300--400%含水量小于0.2%。本产品为性能优异的热塑性工程塑料,有特出的抗冲,耐磨,自润滑等机械性能,可用于造纸机械,纺织器材,化工机械,物料输送部门以及食品机械,文体器械,高强度模量纤维。

Using slurry process, Mg Ti high-efficiency catalyst can be used for batch polymerization. There is no need to clean the kettle for long-term operation, and the polymerization product can reach high molecular weight (4.8 ~ 5 million). With an annual output of 1000 tons, the investment is about 7 million yuan. The battery limit is about 4.5 million, and the investment payback period is within two years. Product specifications and indicators: 5 million and 3.5 million molecular weights. The intrinsic viscosity is 2200ml / g, the density is 0.935-0.945g/ml, and the bulk density is 0.35-0.4g/ml. Impact strength ≥ 150kj / m2, tensile strength 30 ~ 40MPa. Elongation at break 300-400%, water content less than 0.2%. This product is a thermoplastic engineering plastic with excellent performance. It has special mechanical properties such as impact resistance, wear resistance and self lubrication. It can be used in papermaking machinery, textile equipment, chemical machinery, material conveying department, food machinery, sports equipment and high strength modulus fiber.

超高分子量聚乙烯管材(UHMWPE)耐磨性居塑料之冠，是碳钢、不锈钢的3-7倍。摩擦系数低，自润滑，抗粘结，不结垢，降低物料的输送能量。冲击强度列塑料之首。冲击能吸收值在所有塑料中最高，且具消音性。化学稳定性好。优良的耐低温性。卫生无毒可接触食品和药物。可用于输送散物料：应用在粮食、饲料加工工业；油脂、酿酒工业；食品、医药工业；纺织、化纤工业；建材工业；化工工业；矿粉输送及电厂除灰。还可用于输送浆体：应用在采选矿、冶金行业、水煤浆工程；电厂冲灰；海湖盐化工；疏浚、排泥工程、流体、气体的输送；应用在建筑业；水处理；化学制药业；煤气工业；海水利用；船舶及石油化工。

Ultra high molecular weight polyethylene pipe (UHMWPE) has the highest wear resistance among plastics, which is 3-7 times that of carbon steel and stainless steel. Low friction coefficient, self-lubricating, anti bonding, no scaling, reducing the conveying energy of materials. The impact strength ranks first among plastics. The impact energy absorption value is the highest among all plastics and has silencing property. Good chemical stability. Excellent low temperature resistance. It is hygienic, non-toxic and can contact food and drugs. It can be used to transport bulk materials: used in grain and feed processing industry; Oil and wine industry; Food and pharmaceutical industry; Textile and chemical fiber industry; Building materials industry; Chemical industry; Mineral powder conveying and ash removal of power plant. It can also be used to transport slurry: used in mining and beneficiation, metallurgical industry and coal water slurry engineering; Ash Flushing of power plant; Haihu salt chemical industry; Dredging, sludge discharge engineering, fluid and gas transportation; Application in construction industry; Water treatment; Chemical pharmaceutical industry; Gas industry; Seawater utilization; Shipbuilding and petrochemical industry.