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Two-component polyurethane sealant, two-component polyurethane sealant, polyurethane sealant

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HebeiHengshui City
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area:Hebei Hengshui City

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Hengshui Lantian Engineering Rubber & Plastic Co

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Product Details
   
双组份聚氨酯密封胶(膏)
1 .聚氨脂密封膏组成
聚氨酯密封膏属双组分反应固化型,有 A 、 B 两组份组成。 A 组分为无色或浅黄色粘稠状聚氨酯预聚体, B 组分为固化剂与助剂等混合脱水而成的黑色膏状体或液体,按使用要求可有非下垂型和自流平型。主要应用于桥梁、地下室、游泳池、储水池、水坝、隧洞、地铁等各种工程中。
2 .聚氨脂密封膏技术指标 执行标准: JC482 — 1992
测试项目
性能指标

外观
A 组
无色或浅黄色液体


B 组
黑色膏状体或液体

试用期, h
≥ 3

密度
≥ 1.5

表干时间, h
≥ 48

恢复率, %
≥ 100

低温柔性(℃)
-30

流变性
下垂度( N )型
≤ 2mm

拉伸粘接性
最大拉伸强度, MPa
≥ 0.200


最大拉伸率, %
≥ 200

3 .聚氨酯密封膏施工方法
1 ) 基层处理:用钢丝刷、棉纱等工具清理基层的浮浆皮、尘土等,若有油污需用有机溶剂擦洗干净,嵌填前保持基层表面干燥、洁净。
2 ) 填塞衬垫材料:缝腔内要求填充作为衬垫材料的泡漠塑料,以保证嵌填尺寸满足设计要求
3 ) 嵌填聚氨酯密封膏:按产品 A : B=1 : 1.5 的比例,充分混合均匀后,加入嵌缝枪或用腻子刀自下而上,或由前到后进行嵌填;嵌填要求饱满,尽量防止气泡及孔洞的形成;嵌填完成后,要在密封膏表干前,用腻子刀刮出平面或弧面并将多余的密封材料刮去。
4 ) 为了得到更好的界面粘接效果,可以使用适当的底涂剂。
4 .聚氨酯密封膏施工注意事项
1 ) 适用期:双组分密封膏甲、乙组分混合后,混合料逐渐变稠,超过适用期就不能使用。使用时的环境温度对密封膏的固化起相当大的作用,气温越高适用期越短,气温过低时固化速度变慢,施工温度以 5 ℃ ~ 35 ℃ 为宜。
2 ) 使用时,密封材料的宽深比例要适当。
3 ) 密封膏贮存时要避免阳光直射,宜放在阴凉干燥处,远离火源;特别要注意包装桶密封完好,有效期一年。

衡水蓝天工程橡塑有限公司
公司电话 0318-2189878 公司传真0318-2189878
手机 13932822690 经理:高经理
地址:河北衡水市北方工业园
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