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发明公开
CN106866862A 一种聚乙烯基础树脂粉料及其制备方法 无效 - 撤回

一种聚乙烯基础树脂粉料及其制备方法
摘要：
本发明涉及一种用于制备IBC桶专用料的聚乙烯基础树脂粉料及其制备方法，所述聚乙烯基础树脂是由气相法聚乙烯工艺生产的，聚合温度为96℃-120℃，聚合压力为0.85-2.5MPa。制备的基础树脂粉料由乙烯、长链α-烯烃共聚生成，重均分子量为20-35万，分子量分布指数为7-15，α-烯烃含量为5-15‰，熔体流动速率为5-8g/10min，密度为0.942-0.952g/cm3，低温冲击强度(-30℃)大于30kJ/m2，熔体强度大于15cN。确保专用料具有较高机械强度、较好的加工性能和较高的熔体强度，能够保证具有良好的抗熔垂性能，能够满足IBC桶专用料的各项性能。
摘要（英）：

The invention relates to a polyethylene base resin powder for preparing an IBC barrel special material and a preparation method thereof. Polyethylene base resin is produced by a gas phase polyethylene process, the polymerization temperature is 96 DEG C-120 DEG C, and the polymerization pressure is 0.85-2.5 MPa. The prepared base resin powder is generated by copolymerization of ethylene and long-chain alpha-olefin, the weight-average molecular weight is 200-350 thousand, the molecular weight distribution index is 7-15, the alpha-olefin content is 0.5-1.5%, the melt flow rate is 5-8 g/10 min, the density is 0.942-0.952 g/cm<3>, the low temperature impact strength (-30 DEG C) is more than 30 kJ/m<2>, and the melt strength is more than 15 cN. The special material is guaranteed to have high mechanical strength, good processing performance and high melt strength, can be guaranteed to have good antisagging property, and can meet various properties of the IBC barrel special material.

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