Silicon micropowder dispersing agent based on carboxylic acid monomer

Abstract

The invention provides a silicon micropowder dispersing agent based on a carboxylic acid monomer. The silicon micropowder dispersing agent is prepared by the following steps: firstly, weighing the following components in parts by weight: 500-700 parts of carboxylic acid monomer, 20-50 parts of polyurethane modified acrylate, 50-100 parts of long-chain monomer, 100-200 parts of sacrificial monomer, 50-70 parts of water, 1-5 parts of molecular weight control agent, 0.5-1.5 parts of initiator and 300-500 parts of slow-release powder; the preparation method comprises the following steps: adding a carboxylic acid monomer, water and a long-chain monomer into a reaction kettle, heating and stirring, adding a polyurethane modified acrylate macromonomer, a sacrificial monomer, an initiator and a molecular weight control agent after stirring, continuously stirring and preserving heat, putting into a granulator after heat preservation is finished, adding the slow-release powder, and discharging after granulation is finished. The dispersing agent overcomes the defects in the prior art, and has the advantages of being convenient to use and good in dispersing effect for inorganic material slurry with the high silica powder content.

Description

technical field [0001] The invention belongs to the field of dispersants, in particular to a silicon micropowder dispersant based on carboxylic acid monomers. Background technique [0002] Silica powder, also known as silica fume or silicon dioxide superfine powder, is mainly composed of natural quartz (SiO 2 ) or fused silica (natural quartz melted at high temperature and cooled amorphous SiO 2 ) Micropowder processed by multiple processes such as crushing, ball milling (or vibration, jet milling), flotation, pickling purification, high-purity water treatment, etc. Silica powder has pure appearance, white color, and balanced particles. It is a non-toxic, odorless, and pollution-free inorganic non-metallic material. In general, silica powder has good temperature resistance, acid and alkali corrosion resistance, poor thermal conductivity, high insulation, and low temperature. Excellent properties such as expansion, stable chemical properties, and high hardness. Silica powd...

AI Technical Summary

Problems solved by technology

[0003] However, it is difficult for microsilica powder to disperse evenly in the solution in practical applications. The morphology and surface structure of microsilica powder are related to many factors such as its internal structure, impurities, surface adsorption and chemical reaction, preparation process, and environmental conditions, which lead to the complexity and diversity of powder agglomeration and dispersion mechanisms.

There are few domestic records of dispersants for microsilica powder, therefore, it is necessary to develop a dispersant that solves the above problems