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當前位置：首頁 > 新聞資訊 > 雪弗板中間有氣孔怎麽辦？

雪弗板中間有氣孔怎麽辦？

文章出處：南京歐格人氣：发布时间：2020/8/6 16:37:04

　　PVC發泡板中间有气孔怎么办？这其实是因为在PVC發泡板厂家在生产中添加了发泡剂的缘故，所以中间会有气泡，进而形成了气孔。

PVC發泡板

　　PVC發泡板包含发泡塑料也叫泡沫塑料，是以塑料为基本组分，含有大量气泡，可以说是以气体为填充的复合材料。

　　PVC發泡板的分类

　　根據發泡倍率不同，可以分爲高發泡和低發泡，根據泡體質地的軟硬程度，可以分爲硬質、半硬質、軟質泡沫塑料。根據泡孔結構可以分爲閉孔泡沫塑料和開孔泡沫塑料。一般常見的PVC發泡片材屬于硬質閉孔低發泡片材。

　　根据常见的几种情况，以及遇到的问题，欧格PVC發泡板厂家小编把相关的解决方案整理如下；

　　第一種情況：板材中間泡孔大

　　問題1：擠出機溫度設置高

　　解决方案：降低温度（适当-5度，递减方式微调，不要大浮动降温）

　　问题2：发泡调节剂量少

　　解决方案：提高发泡调节剂的用量（同理：适当一个小单位微调方式增加）

　　问题3：润滑调节不当

　　解决方案：适当调整润滑剂配比（根据开机师傅的经验做调整，没办法具体的参数）

　　第二種情況：片材芯部泡孔大，表面泡孔小

　　問題1：主機溫度高

　　解决方案：降低主机温度（适当-5度，递减方式微调，不要大浮动降温）

　　问题2：润滑调节不当

　　解決方案：調整潤滑劑配比

　　問題3：熔體強度不足

解決方案：添加發泡調節劑用量

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