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为了进一步对凝胶去污技术进行丰富与补充,扩展去污凝胶的应用范围,在原有配方的基础上,加入高分子成膜剂和增塑剂,通过物理共混改性的方式,制得可剥离去污凝胶。结合实际施工需要,初步确定了2种可剥离去污凝胶的较优基础配方:进行喷涂作业时,去污凝胶用量为22%(wt,质量分数,下同),成膜剂用量为7%,增塑剂用量为6%;进行刷涂作业时,去污凝胶用量为26%,成膜剂用量为6%,增塑剂含用量为6%。现场实验表明,通过可剥离去污凝胶SDG刷涂在不同材质的污染表面进行去污测试,不锈钢表面的去污效率达到88.1%以上;油漆墙面的去污效率达到87.8%以上;水磨石地面的去污效率达到86.2%以上;铅玻璃去污效率达到85.8%以上;碳钢表面去污效率达到70.2%以上;水泥墙面去污效率为8.9%。可剥离去污凝胶有望应用于污染较轻且需要防腐防潮的材料表面。
In order to further enrich and supplement the gel decontamination technology and expand the application range of the decontamination gel, based on the original formulation, add the polymer film-forming agent and the plasticizer, and through physical blend modification, Peelable decontamination gel. In combination with the actual construction needs, two excellent basic formulations of peelable decontamination gel were preliminarily determined: the amount of decontamination gel was 22% (wt, mass fraction), the amount of filming agent was 7%, the amount of plasticizer 6%; brushing operation, the amount of decontamination gel was 26%, the amount of filming agent was 6%, plasticizer content of 6%. Field experiments showed that the decontamination efficiency of the stainless steel surface reached more than 88.1% by decontamination test of SDG brush stripping decontamination gel on different surfaces of contaminated materials; the decontamination efficiency of paint wall surface reached more than 87.8%; the surface of terrazzo Of decontamination efficiency of 86.2% or more; lead glass decontamination efficiency of 85.8% or more; carbon steel surface decontamination efficiency of 70.2% or more; cement wall decontamination efficiency of 8.9%. Peelable decontamination gels are expected to be applied to surfaces that are less polluting and require preservation and moisture protection.