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新型缓释型固体聚羧酸减水剂的制备及性能研究
作者：邓磊
（贵州科之杰新材料有限公司，贵州 龙里 551206）
摘要：采用本体聚合法，以异丁烯醇聚氧乙烯基醚、丙烯酸及富马酸双甲酯为原材料，在过氧化苯甲酰催化作用下，于70 ℃进行三元共聚，制得一种新颖的缓释型固体聚羧酸减水剂PC-HS。试验结果表明，该减水剂合成工艺简单，混凝土分散性及缓释效果良好，混凝土28 d抗压强度比高达到150%，适合工业化生产与应用。
关键词：聚羧酸减水剂；本体聚合；缓释
中图分类号：TU528.042+.2 文献标识码：A 文章编号：1001-702X（2020）02-0019-03
Research on the preparation and performance of a novel solid slow-releasing polycarboxylate superplasticizer
DENG Lei
（Guizhou Prominent Science New Materials Co. Ltd.，Longli 551206，China）
Abstract：In this paper，isobutenol polyoxyvinyl ether，acrylic acid and fumarate dimethyl ester are used as raw materials to prepare a solid slow-releasing polycarboxylate superplasticizer PC-HS by triplet copolymerization at 70 ℃ under the catalytic action of benzoyl peroxide. It is found that the method of bulk polymerization is simple，the dispersivity and the slow-releasing effect of polycarboxylate superplasticizer are excellent，and the compressive strength of concrete at 28 days is as high as 150%，which is suitable for industrial production and application.
Key words：polycarboxylate superplasticizer，bulk polymerization，slow-releasing