HDPE管

HDPE管
   HDPE管是传统的钢铁管材、聚氯乙烯饮用水管的换代产品。HDPE管须承受适定的压力，通常要选用分子量大、机械性能较好的PE树脂，如HDPE树脂。LDPE树脂的拉伸强度低，耐压差，刚性差，成型加工时尺寸稳定性差，并且连接困难，不适宜作为给水压力管的材料。但由于其卫生指标较高，LDPE特别是LLDPE树脂已成为生产饮用水管的常用材料。LDPE、LLDPE 树脂的熔融粘度小，流动性好，易加工，因而对其熔体指数的选择范围也较宽，通常MI在0.3-3g/10min之间。
   HDPE pipe is a traditional steel pipe, PVC drinking water products. HDPE tube must bear certain pressure, usually large selection of molecular weight, good mechanical properties of PE resin, HDPE resin. LDPE resin of low tensile strength, poor rigidity, pressure difference, when processing poor dimensional stability, and connection difficulties, not suitable as a water supply for pressure pipe material. But because of its high health indicators, LDPE especially in the production of LLDPE resin has become commonly used in drinking water. LDPE, LLDPE resin melt viscosity, good fluidity, easy processing, so its melt index choice scope is wide, usually MI in 0.3-3g/10min.