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A platform for research: civil engineering, architecture and urbanism
Machine-made sand regulator of carboxylic ester polymer, and preparation process thereof
The invention discloses a machine-made sand regulator of a carboxylic ester polymer and a preparation process of the machine-made sand regulator. The machine-made sand regulator is mainly prepared from the following components: 215-260 parts of a carboxylic acid monomer, 20-37 parts of an ester monomer, 1.93-3.47 parts of an initiator, 0.1-0.4 part of a polymerization inhibitor, 6-15 parts of a chain transfer agent and 20-44 parts of liquid caustic soda with a concentration of 30-35%. According to the invention, a carboxylic acid monomer and an ester monomer are used as raw materials to synthesize a carboxylic ester polymer, the molecular weight of the polymer is controlled by adding a polymerization inhibitor and a chain transfer agent and adjusting the initial pH value of the reaction, and a carboxyl small monomer provides a negatively-charged carboxylate radical group which is well adsorbed on the surface of positively-charged machine-made sand particles, so that the particle fluidity of the machine-made sand can be effectively adjusted, and the performance of the machine-made sand is improved.
本发明公开了一种羧酸酯类聚合物的机制砂调节剂及其制备工艺，机制砂调节剂主要由以下组分制备而成：羧酸类单体215‑260份、酯类单体20‑37份、引发剂1.93‑3.47份、阻聚剂0.1‑0.4份、链转移剂6‑15份、30‑35％浓度液碱20‑44份。本发明以羧酸类单体与酯类单体为原料，合成一种羧酸酯类聚合物，通过添加阻聚剂、链转移剂与调节反应初始pH值的方式来控制聚合物的分子量。并通过羧基小单体提供带负电的羧酸根基团，很好地吸附在带正电的机制砂颗粒表面，能够有效调节机制砂的颗粒流动度，改善机制砂性能。
Machine-made sand regulator of carboxylic ester polymer, and preparation process thereof
The invention discloses a machine-made sand regulator of a carboxylic ester polymer and a preparation process of the machine-made sand regulator. The machine-made sand regulator is mainly prepared from the following components: 215-260 parts of a carboxylic acid monomer, 20-37 parts of an ester monomer, 1.93-3.47 parts of an initiator, 0.1-0.4 part of a polymerization inhibitor, 6-15 parts of a chain transfer agent and 20-44 parts of liquid caustic soda with a concentration of 30-35%. According to the invention, a carboxylic acid monomer and an ester monomer are used as raw materials to synthesize a carboxylic ester polymer, the molecular weight of the polymer is controlled by adding a polymerization inhibitor and a chain transfer agent and adjusting the initial pH value of the reaction, and a carboxyl small monomer provides a negatively-charged carboxylate radical group which is well adsorbed on the surface of positively-charged machine-made sand particles, so that the particle fluidity of the machine-made sand can be effectively adjusted, and the performance of the machine-made sand is improved.
本发明公开了一种羧酸酯类聚合物的机制砂调节剂及其制备工艺，机制砂调节剂主要由以下组分制备而成：羧酸类单体215‑260份、酯类单体20‑37份、引发剂1.93‑3.47份、阻聚剂0.1‑0.4份、链转移剂6‑15份、30‑35％浓度液碱20‑44份。本发明以羧酸类单体与酯类单体为原料，合成一种羧酸酯类聚合物，通过添加阻聚剂、链转移剂与调节反应初始pH值的方式来控制聚合物的分子量。并通过羧基小单体提供带负电的羧酸根基团，很好地吸附在带正电的机制砂颗粒表面，能够有效调节机制砂的颗粒流动度，改善机制砂性能。
Machine-made sand regulator of carboxylic ester polymer, and preparation process thereof
一种羧酸酯类聚合物的机制砂调节剂及其制备工艺
JIANG BO (author) / WANG GUANWEN (author) / XIONG XIAO (author) / WANG XUMIN (author) / KE KAI (author) / CHU JINGSONG (author)
2021-09-17
Patent
Electronic Resource
Chinese
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