Machine-made sand regulator of alcohol ether modified carboxylic acid polymer and preparation method of machine-made sand regulator

Abstract

The invention provides a machine-made sand regulator of an alcohol ether modified carboxylic acid polymer and a preparation method of the machine-made sand regulator. The preparation method comprises the following steps: firstly, adding 75-91 parts of carboxylic acid monomer acid, 33-67 parts of alcohol ether monomer, 2-4 parts of chain transfer agent, 0.1-0.3 part of polymerization inhibitor and water into a reaction kettle provided with a stirrer; conducting heating to 80-90 DEG C by adopting a water bath; then using 150-175 parts of carboxylic acid monomers, 0.1-0.3 part of a polymerization inhibitor and 178-187 parts of water to prepare a solution A, using 1.64-3.21 parts of an initiator, 2-8 parts of a chain transfer agent and water to prepare a solution B, and dropwise adding the solution A and the solution B into the reaction kettle through a dropwise adding pump, wherein the solution A is dropwise added for 1-1.5 hours, and the solution B is dropwise added for 1-2 hours; and after dropwise adding the solution A and the solution B, preserving heat for 1-2 hours, conducting cooling, conducting discharging, and replenishing water to 1000 parts, thereby obtaining the machine-made sand regulator. By introducing the alcohol ether monomer, the side chain length and flexibility of a polymer molecular chain are increased, the dispersing performance of the polymer is improved, the polymer can adapt to machine-made sand of different grades, and the use performance of the machine-made sand is improved.

Description

technical field [0001] The invention belongs to the technical field of engineering construction, in particular to an alcohol ether modified carboxylic acid polymer machine-made sand conditioner and a preparation method thereof. Background technique [0002] The current engineering and construction industry has a large demand for sand and gravel, but at present, natural sand resources are in short supply and the country is paying more and more attention to the protection of the ecological environment. The amount of natural sand is gradually decreasing, and machine-made sand replaces natural sand to prepare concrete. inevitable trend of development. However, machine-made sand has disadvantages such as sharp edges and corners, rough surface, and poor gradation, which lead to poor workability of concrete mixed with machine-made sand. At present, few people can provide effective solutions. Therefore, developing a new type of machine-made sand conditioner has become a research ho...

AI Technical Summary

Problems solved by technology

However, machine-made sand has disadvantages such as sharp edges and corners, rough surface, and poor gradation, which lead to poor workability of concrete mixed with machine-made sand. At present, few people can give effective solutions.

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