成型特性
1.结晶料,吸湿性小,易发生融体破裂,长期与热金属接触易分解.
2.流动性好,但收缩范围及收缩值大,易发生缩孔.凹痕,变形.
3.冷却速度快,浇注系统及冷却系统应缓慢散热,并注意控制成型温度.料温低温高压时容易取向,模具温度低于50度时,塑件不光滑,易产生熔接不良,流痕,90度以上易发生翘曲变形
4.塑料壁厚须均匀,避免缺胶,尖角,以防应力集中.
专业供应加纤PP、防火PP、抗静电PP、抗紫外线PP、抗冲击PP、食品级PP、耐热级PP、耐候级PP、高流动PP、以及吹塑级PP、挤出级PP、透明级PP等。
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详细说明：A titter went round the shop at this and everyone stopped whispering, to enjoy the unexpected passage of arms. I was so well known to them all as the meekest and most slavish supporter of the old man, that to hear me now contradicting him as I was surprised them as much as it did him. It was in the nature of a treat, of the enjoyment of which nothing must be lost.
“Do you mean,” said old Brickett slowly and ponderously after a while, “do you mean as our chapel is rot and the Reverend Pitchfellow what you call tosh”
