全水发泡聚氨酯保温材料的制备及其在混凝土坝的防护应用研究  

Study on preparation of all-water foamed polyurethane insulation material and its application in concrete dam protection

作　　者：杨晨 罗建华 任银霞 孙永奇 Yang Chen;Luo Jianhua;Ren Yinxia;Sun Yongqi(Xinjiang Irtysh River Investment and Development(Group)Co.,Ltd.,Urumqi 830000,Xinjiang,China;Xinjiang Keneng New Material Technology Co.,Ltd.,Urumqi 830022,Xinjiang,China)

机构地区：[1]新疆额尔齐斯河投资开发(集团)有限公司,新疆乌鲁木齐830000 [2]新疆科能新材料技术股份有限公司,新疆乌鲁木齐830022

出　　处：《中国胶粘剂》2022年第8期32-38,共7页China Adhesives

摘　　要：采用“永久性防渗涂层、全水发泡聚氨酯硬泡保温材料(分缝)、增强型抗裂砂浆找平层和单组分聚脲防水涂料”的防护结构,对新疆高寒地区某上游混凝土面板进行保温保湿抗冻害防护。研究结果表明:通过组合聚醚、复合催化剂、用水量和施工温度的控制,可实现全水发泡聚氨酯保温材料现场喷涂,且材料尺寸稳定性好,抗压强度高。通过采用“逐层渐变柔性释放”及“分块防护、内应力释放”的施工工艺,可有效防止保温层开裂、脱落,确保对混凝土大坝的防护效果。The protective structure of“permanent anti-seepage coating,all-water foamed polyurethane rigid foam insulation material(seam seperation),reinforced anti-cracking mortar leveling layer and one-component polyurea waterproof coating”was used to protect the concrete panel in an upstream alpine region of Xinjiang for heat preservation,moisture retention and anti-freezing protection. The research results showed that by controlling the composite polyether,composite catalyst,water consumption and construction temperature,on-site spraying of all-water foamed polyurethane insulation material could be achieved,and the material had good dimensional stability and high compressive strength. By adopting the construction technology of“layer by layer gradually flexible release”and“block by block protection and internal stress release”,the cracking and falling off of the thermal insulation layer could be effectively prevented,and the protection effect of the concrete dam could be ensured.

关 键 词：全水发泡 硬质聚氨酯泡沫 高寒地区 水工混凝土 保温保湿 喷涂 环保 

分 类 号：TV698.26[水利工程—水利水电工程]