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发明授权
CN108795363B 一种中空玻璃用双组份聚氨酯密封胶及其制备方法 有权

一种中空玻璃用双组份聚氨酯密封胶及其制备方法
摘要：
本发明提供了一种中空玻璃用双组份聚氨酯密封胶及其制备方法，密封胶包括A组分和B组分：以重量份数计，A组分包括羟基封端液体聚丁二烯20～40份、增塑剂10～30份、填料10～30份、触变剂2～50份、扩链剂0.01～2份、催化剂a 0.01～2份、吸水剂0.2～2份、紫外光稳定剂0.01～0.5份和抗氧剂0.01～0.5份；B组分包括异氰酸酯20～50份、异氰酸酯聚合物10～30份、增塑剂10～30份、填料0～40份、触变剂2～10份、硅烷偶联剂5～15份和催化剂b0.01～2份；异氰酸酯聚合物由羟基封端液体聚丁二烯和二异氰酸酯反应制得。密封胶具有良好的水密性和气密性，对基材具有良好的粘结性。
摘要（英）：

The invention provides a two-component polyurethane sealant for insulating glass and a preparation method thereof. The sealant is prepared from a component A and a component B, wherein the component Acomprises the following components in parts by weight: 20-40 parts of hydroxyl terminated liquid polybutadiene, 10-30 parts of plasticizer, 10-30 parts of filler, 2-50 parts of thixotropic agent, 0.01-2 parts of chain extender, 0.01-2 parts of catalyst a, 0.2-2 parts of water absorbing agent, 0.01-0.5 part of UV stabilizer and 0.01-0.5 part of antioxidant; the component B comprises the followingcomponents in parts by weight: 20-50 parts of isocyanate, 10-30 parts of isocyanate polymer, 10-30 parts of plasticizer, 0-40 parts of filler, 2-10 parts of thixotropic agent, 5-15 parts of silane coupling agent and 0.01 to 2 parts of catalyst b, wherein the isocyanate polymer is prepared from hydroxyl terminated liquid polybutadiene and diisocyanate through reaction. The sealant has good water tightness and airtightness and has good adhesion to a substrate.

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