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A platform for research: civil engineering, architecture and urbanism
Preparation method of high-regularity polycarboxylic acid superplasticizer
The invention discloses a preparation method and application of a high-regularity polycarboxylic acid superplasticizer, and the preparation method of the high-regularity polycarboxylic acid superplasticizer comprises the following steps: firstly, carrying out free radical polymerization reaction on an unsaturated alkenyl alcohol monomer A containing hydroxyalkyl/hydroxyalkoxy and an unsaturated acid monomer B to form a main chain of a polymer; an epoxy substance is added on an active hydrogen site on the main chain through anionic polymerization reaction to form a side chain of the polymer, and finally the high-regularity polycarboxylic acid super plasticizer with the comb-shaped structure is formed. The high-regularity polycarboxylic acid superplasticizer is a polymer with a high-regularity molecular sequence structure, has higher water reducing capacity and better concrete material adaptability, and can remarkably improve the dispersing capacity of the superplasticizer on high-performance concrete when being applied.
本发明公开了一种高规整度聚羧酸超塑化剂的制备方法和应用，所述高规整度聚羧酸超塑化剂的制备方法是先采用含有羟烷基/羟烷氧基的不饱和烯基醇类单体A与不饱和酸类单体B发生自由基聚合反应形成聚合物的主链，再通过阴离子聚合反应在主链上的活泼氢位点加成环氧类物质形成聚合物的侧链，最终形成具有梳型结构的高规整度聚羧酸超塑化剂。所述高规整度聚羧酸超塑化剂是具有高规整度分子序列结构的聚合物，其具有更高的减水能力，也具有更好的混凝土材料适应性，其应用时可以显著提高超塑化剂对高性能混凝土的分散能力。
Preparation method of high-regularity polycarboxylic acid superplasticizer
The invention discloses a preparation method and application of a high-regularity polycarboxylic acid superplasticizer, and the preparation method of the high-regularity polycarboxylic acid superplasticizer comprises the following steps: firstly, carrying out free radical polymerization reaction on an unsaturated alkenyl alcohol monomer A containing hydroxyalkyl/hydroxyalkoxy and an unsaturated acid monomer B to form a main chain of a polymer; an epoxy substance is added on an active hydrogen site on the main chain through anionic polymerization reaction to form a side chain of the polymer, and finally the high-regularity polycarboxylic acid super plasticizer with the comb-shaped structure is formed. The high-regularity polycarboxylic acid superplasticizer is a polymer with a high-regularity molecular sequence structure, has higher water reducing capacity and better concrete material adaptability, and can remarkably improve the dispersing capacity of the superplasticizer on high-performance concrete when being applied.
本发明公开了一种高规整度聚羧酸超塑化剂的制备方法和应用，所述高规整度聚羧酸超塑化剂的制备方法是先采用含有羟烷基/羟烷氧基的不饱和烯基醇类单体A与不饱和酸类单体B发生自由基聚合反应形成聚合物的主链，再通过阴离子聚合反应在主链上的活泼氢位点加成环氧类物质形成聚合物的侧链，最终形成具有梳型结构的高规整度聚羧酸超塑化剂。所述高规整度聚羧酸超塑化剂是具有高规整度分子序列结构的聚合物，其具有更高的减水能力，也具有更好的混凝土材料适应性，其应用时可以显著提高超塑化剂对高性能混凝土的分散能力。
Preparation method of high-regularity polycarboxylic acid superplasticizer
一种高规整度聚羧酸超塑化剂的制备方法
ZHOU DONGLIANG (author) / RAN QIANPING (author) / YANG YONG (author) / LIU JIAPING (author) / LI SHENTONG (author) / HU CONG (author) / YAN HAN (author) / ZHOU XIN (author) / WANG PING (author)
2022-07-01
Patent
Electronic Resource
Chinese
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