玻璃钢方管
在冬季制作玻璃钢方管如何选择
作者:河北宏兴    发布于:2015-07-04 17:41:50    文字:【】【】【

  玻璃钢方管制成的不饱和聚酯树脂基质中,玻璃纤维毡涂有致密的连续的玻璃纤维增强材料。致密的纤维核心,使型材有一个强大优势,即它具有良好的抗弯强度和冲击强度,拉挤玻璃钢方管型材增加的横向强度,在表面形成富树脂层,是一个很好的防腐蚀型材性能。它具有耐高温、抗腐蚀、强度高、比重小、吸湿低、延伸小及绝缘好等一系列优异特性。

  冬季制作玻璃钢方管的原料选择:

  1、树脂的选择

  黏度低的树脂比较适合在冬天使用,而一般的树脂是满足不了生产需求,尤其是温度降到10℃及以下时更明显,为了解决这个问题,通常通过水浴法来加热树脂,需要注意的是,为了防止苯乙烯的发挥,加热时要加盖盖子。

  2、固化系统的选择

  在寒冷的动机最好选用活性较高的固化剂,这是因为常用的过氧化甲乙酮固化系统在温度过低时就不能满足生产加工的要求,一般的情况下,在冬季会选用过氧化苯甲酰、高活性过氧化甲乙酮等固化系统。还要注意的是冬季调节固化速度时,应通过调整促进剂的用量来调整固化速度,不能采用调整固化剂的方法来调整固化速度,防止树脂固化时产生微裂纹或裂纹,影响产品性能。

  3、玻璃纤维的选择

  寒冷的冬季应该选择密度更大的玻璃纤维。

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