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塑料挤出机螺杆转速高融指变高吗

2025-04-06 20:15:26

推荐回答（1个）

回答1：

正常情况下会的。螺杆转速高了以后，剪切变强，分子链断裂的更多，分子量变小，物料的流动性变好，融指升高。
不过也要看配方中含不含交联剂及所填充的物料。交联剂会是分子链重新连接，增加分子量，降低融指。填充的物料也会是流动性变若，降低融指。

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