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How High Temperature Can the Flame Retardant in Polypropylene Flame - Retardant Sheets Withstand?

塑料PP板材在生产的时候，是可以通过挤塑加工而成的。在挤出成型过程中，物料从粒状固态进入挤出机后，要完成输送、压实、熔融、均化直到高温熔融型坯从机头中挤出，其温度变化非常复杂。和PP料混在一起的阻燃剂，同样要能够耐高温。

一般PP板材的加工温度在170-190度左右，有些特殊工艺要求的，加工温度更高。

由于加热时料筒内，尤其是剪切块的温度要明显高于加工温度。一般阻燃剂的分解温度或者热失重温度必须比加工温度至少高20度以上。

这就要求PP阻燃板材里面的阻燃剂至少要能够耐230℃以上的高温才可以

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How High Temperature Can the Flame Retardant in Polypropylene Flame - Retardant Sheets Withstand?

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