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：“Look at our man!” almost shouted old Brickett presently —“look at the good he’s a-doin’ here — look ‘ow he’s making people think. Look ‘ow the takings of the pubs is going down. Why, only last week I ‘eard as ‘ow the owner of the ‘Wattle Tree’ ‘ad told the income tax man as ‘ow all his profits was agoing to the dogs, and that he oughtn’t to be paying ‘alf as much as he did last year. Now that’s because of our chapel, sure; the influence is a-gradually beginning to be felt and in a year or two anything may happen. Now what I say is
