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Reduction type polycarboxylate superplasticizer and preparation method thereof
The invention relates to a reduction type polycarboxylic acid water reducing agent, which is prepared from the following raw materials in parts by weight: 10 to 15 parts of modified alcohol ether macromonomer, 60 to 70 parts of unsaturated polyether macromonomer, 1 to 5 parts of unsaturated esterification monomer, 10 to 15 parts of acrylic acid, 1 to 1.5 parts of oxidizing agent, 0.05 to 0.08 part of reducing agent, 0.08 to 1 part of chain transfer agent and 100 to 400 parts of deionized water. The structural formula of the modified alcohol ether macromonomer is # imgabs0 #. The shrinkage-reducing type polycarboxylic acid water reducer prepared by the invention not only has the characteristics of a conventional polycarboxylic acid water reducer, but also has a good shrinkage-reducing effect of preventing concrete cracking, so that the problem of poor durability caused by shrinkage in concrete engineering is solved; and the construction safety of concrete engineering is greatly improved.
本发明涉及一种减缩型聚羧酸减水剂，以重量份数计，包括以下原料：改性醇醚大单体10～15份、不饱和聚醚大单体60～70份、不饱和酯化单体1～5份、丙烯酸10～15份、氧化剂1～1.5份、还原剂0.05～0.08份、链转移剂0.08～1份、去离子水100～400份。所述改性醇醚大单体的结构式包括：#imgabs0#本发明制备得到的减缩型聚羧酸减水剂除具备常规聚羧酸减水剂的特性之外，还具有良好的预防混凝土开裂的减缩效果，解决了混凝土工程因收缩而导致的耐久性差的问题，大大提高了混凝土工程的施工安全性。
Reduction type polycarboxylate superplasticizer and preparation method thereof
The invention relates to a reduction type polycarboxylic acid water reducing agent, which is prepared from the following raw materials in parts by weight: 10 to 15 parts of modified alcohol ether macromonomer, 60 to 70 parts of unsaturated polyether macromonomer, 1 to 5 parts of unsaturated esterification monomer, 10 to 15 parts of acrylic acid, 1 to 1.5 parts of oxidizing agent, 0.05 to 0.08 part of reducing agent, 0.08 to 1 part of chain transfer agent and 100 to 400 parts of deionized water. The structural formula of the modified alcohol ether macromonomer is # imgabs0 #. The shrinkage-reducing type polycarboxylic acid water reducer prepared by the invention not only has the characteristics of a conventional polycarboxylic acid water reducer, but also has a good shrinkage-reducing effect of preventing concrete cracking, so that the problem of poor durability caused by shrinkage in concrete engineering is solved; and the construction safety of concrete engineering is greatly improved.
本发明涉及一种减缩型聚羧酸减水剂，以重量份数计，包括以下原料：改性醇醚大单体10～15份、不饱和聚醚大单体60～70份、不饱和酯化单体1～5份、丙烯酸10～15份、氧化剂1～1.5份、还原剂0.05～0.08份、链转移剂0.08～1份、去离子水100～400份。所述改性醇醚大单体的结构式包括：#imgabs0#本发明制备得到的减缩型聚羧酸减水剂除具备常规聚羧酸减水剂的特性之外，还具有良好的预防混凝土开裂的减缩效果，解决了混凝土工程因收缩而导致的耐久性差的问题，大大提高了混凝土工程的施工安全性。
Reduction type polycarboxylate superplasticizer and preparation method thereof
一种减缩型聚羧酸减水剂及其制备方法
CHEN CHANGJUN (author) / AN XIAOQIANG (author) / KE YULIANG (author) / MIAO DONGHUI (author) / YANG YINGGANG (author) / LIN YANMEI (author)
2023-11-28
Patent
Electronic Resource
Chinese
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