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发明公开
CN104177941A 一种水基的吸水膨胀弹性体缓膨处理剂及其制备方法 无效 - 撤回

一种水基的吸水膨胀弹性体缓膨处理剂及其制备方法
摘要：
本发明涉及一种水基的吸水膨胀弹性体缓膨处理剂及其制备方法。主要应用于减缓吸水膨胀弹性体防水材料在施工阶段的膨胀速率，满足工程施工状态需要。本发明选用苯丙乳液作为主体材料，辅以遮蔽剂、消泡剂、润湿剂、分散剂、防腐剂、流平剂、成膜剂等功能助剂，其涂刷膜干燥后的可形成防水隔离层，有效延缓吸水膨胀弹性体的遇水膨胀速率。用本发明缓膨剂处理后的聚氨酯遇水膨胀弹性体密封条，在隧道施工遇水状态，雨水浸淋6小时内外观无明显变化，水中浸泡2天内与水泥管片粘接不脱落，并在水中浸泡7天后缓膨涂层完全破坏，14天内达到材料膨胀倍率90％以上。
摘要（英）：

The invention relates to a water-based water swelling elastomer swell-slowing treating agent and a preparation method thereof. The treating agent is mainly used for reducing the swelling speed of a water swelling elastomer waterproof material in the construction stage to meet the requirements of engineering construction states. According to the treating agent disclosed by the invention, a styrene-acrylic emulsion is selected to serve as a main body material; and functional auxiliaries such as a screening agent, a defoaming agent, a wetting agent, a dispersing agent, a preservative, a flatting agent, a film-forming agent and the like are added; and a waterproof isolation layer can be formed after a coating film of the treating agent is dried to effectively reduce the water swelling speed of a water swelling elastomer. A polyurethane water swelling elastomer sealing strip treated by the swell-slowing agent disclosed by the invention has the advantages that in the tunnel construction in the state of encountering water, the appearance of the sealing strip has no obvious change after the sealing strip is soaked in rain water in 6 hours; the adhesion between the sealing strip and a cement segment is not influenced after the sealing strip is soaked in water in 2 days; and the swell-slowing coating is completely damaged after the sealing strip is soaked in water for 7 days and the material swelling rate is up to above 90% in 14 days.

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