Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylate superplasticizer synthesized by normal temperature method, and preparation method and application thereof
The invention provides a polycarboxylic acid water reducing agent synthesized by a normal temperature method, and a preparation method and application thereof. The polycarboxylic acid water reducing agent synthesized by the normal temperature method comprises the following components in parts by weight: 320-360 parts of polyoxyethylene ether macromonomer; 10-30 parts of an unsaturated carboxylic acid comonomer; 0 to 50 parts of esters; 2-5 parts of an initiator; 0.2 to 1.2 parts of a reducing agent; 0.8-5 parts of a chain transfer agent; 0.5 to 2 parts of a catalyst; 13 to 36 parts of alkali liquor; 570 to 640 parts of water; the pH value of the polycarboxylate superplasticizer synthesized by the normal temperature method is 4-6, and the solid content is 38%-42%. The water reducer disclosed by the invention has good particle dispersity and slump retaining capacity, and has certain high adaptability and viscosity reduction effect; the polycarboxylate superplasticizer synthesized by the normal-temperature method is especially suitable for projects which are poor in sandstone and cement, long in transportation time and high in requirements on the working performance of concrete.
本发明提供一种常温法合成聚羧酸减水剂、其制备方法及用途，所述常温法合成聚羧酸减水剂包括重量配比如下的各组分：聚氧乙烯醚大单体320～360份；不饱和羧酸共聚单体10～30份；酯类0～50份；引发剂2～5份；还原剂0.2～1.2份；链转移剂0.8～5份；催化剂0.5～2份；碱液13～36份；水570～640份；所述常温法合成聚羧酸减水剂的pH为4～6，固含为38％～42％。本发明减水剂具有良好的颗粒分散性和保坍能力，具有一定高适应性、降粘效果；本发明常温法合成聚羧酸减水剂尤其适用于砂石料、水泥较差、长运输时间及对混凝土工作性能有较高要求的工程。
Polycarboxylate superplasticizer synthesized by normal temperature method, and preparation method and application thereof
The invention provides a polycarboxylic acid water reducing agent synthesized by a normal temperature method, and a preparation method and application thereof. The polycarboxylic acid water reducing agent synthesized by the normal temperature method comprises the following components in parts by weight: 320-360 parts of polyoxyethylene ether macromonomer; 10-30 parts of an unsaturated carboxylic acid comonomer; 0 to 50 parts of esters; 2-5 parts of an initiator; 0.2 to 1.2 parts of a reducing agent; 0.8-5 parts of a chain transfer agent; 0.5 to 2 parts of a catalyst; 13 to 36 parts of alkali liquor; 570 to 640 parts of water; the pH value of the polycarboxylate superplasticizer synthesized by the normal temperature method is 4-6, and the solid content is 38%-42%. The water reducer disclosed by the invention has good particle dispersity and slump retaining capacity, and has certain high adaptability and viscosity reduction effect; the polycarboxylate superplasticizer synthesized by the normal-temperature method is especially suitable for projects which are poor in sandstone and cement, long in transportation time and high in requirements on the working performance of concrete.
本发明提供一种常温法合成聚羧酸减水剂、其制备方法及用途，所述常温法合成聚羧酸减水剂包括重量配比如下的各组分：聚氧乙烯醚大单体320～360份；不饱和羧酸共聚单体10～30份；酯类0～50份；引发剂2～5份；还原剂0.2～1.2份；链转移剂0.8～5份；催化剂0.5～2份；碱液13～36份；水570～640份；所述常温法合成聚羧酸减水剂的pH为4～6，固含为38％～42％。本发明减水剂具有良好的颗粒分散性和保坍能力，具有一定高适应性、降粘效果；本发明常温法合成聚羧酸减水剂尤其适用于砂石料、水泥较差、长运输时间及对混凝土工作性能有较高要求的工程。
Polycarboxylate superplasticizer synthesized by normal temperature method, and preparation method and application thereof
一种常温法合成聚羧酸减水剂、其制备方法及用途
SUN YUEFENG (Autor:in) / LIU CHENGJING (Autor:in) / RUAN YANG (Autor:in) / LIU YANFENG (Autor:in) / ZU GUOJIA (Autor:in) / WEI WENQIANG (Autor:in) / GAO WEI (Autor:in) / HUANG SHUAI (Autor:in) / XU TIANZHEN (Autor:in)
06.06.2023
Patent
Elektronische Ressource
Chinesisch
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