PUR热熔胶（反应型聚氨酯热熔胶）反应原理及施胶工艺

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PUR热熔胶（反应型聚氨酯热熔胶）反应原理及施胶工艺

时间 : 2020-12-02 10:57:37

PUR热熔胶（反应型聚氨酯热熔胶）固化过程分为两个阶段，分别为冷却凝聚和湿气固化。在第一个阶段，PUR热熔胶与普通热塑性热熔胶一样，胶黏剂加热熔融，施胶于基材上后，冷却凝聚产生初粘强度；在湿气固化阶段，PUR热熔胶与空气中的湿气发生扩链反应，形成聚氨酯分子链刚性结构，从而使其具有高粘接强度，良好的耐化学性、耐热性、耐水解性，且可胶接物类型多、对油漆面等处理过的表面相容性好等性能。

PUR热熔胶施胶工艺流程

PUR热熔胶施胶工艺

PUR热熔胶使用方法

1．施胶表面应洁净、干燥、无油。

2．由于塑料材料表面经常会残留有脱模剂成分，如对塑料的粘接不够牢固时，建议对塑料表面使用 IPA擦拭或打磨等表面处理方法进行处理。

3．本品最佳使用温度是 105-120℃，使用应按照专业的熔胶设备要求进行。

扩展阅读

PUR热熔胶介绍

PUR热熔胶在平板显示

领域中的应用

平板显示器用胶解决方案

VCM马达用胶解决方案

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