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Method for preparing polymer ceramic dispersants

A polymer ceramic and dispersant technology, applied in chemical instruments and methods, transportation and packaging, dissolution, etc., can solve the problems of limited dispersion effect and large dosage, achieve good dispersion effect, enhance dispersion performance, and broaden the application field Effect

Inactive Publication Date: 2011-08-10
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of molecular structure, relative molecular weight and other factors, small molecule dispersants often have very limited dispersing effect and the dosage is relatively large.

Method used

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  • Method for preparing polymer ceramic dispersants
  • Method for preparing polymer ceramic dispersants
  • Method for preparing polymer ceramic dispersants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: Polyethylene glycol (PEG200) and maleic anhydride were mixed uniformly at a molar ratio of 1:0.8 to prepare solution A; pure sulfuric acid was added to solution A, and the mass ratio of solution A to acid was 100:3 , then heated up to 30°C, and reacted for 4 hours to obtain an esterified product B; the product B, functional monomer acrylic acid and vinyl monomer methyl acrylate were mixed uniformly in a mass ratio of 1:1:1.5 to obtain Monomer solution C; mix solution C and water uniformly in a mass ratio of 1:8 to obtain monomer mixed solution D; mix water and water-soluble initiator ammonium persulfate uniformly in a mass ratio of 1:0.002 to obtain initiator Agent aqueous solution E; at 80°C, add dropwise initiator aqueous solution E to the monomer mixed solution D, wherein the mass ratio of the monomer mixed solution D to the initiator aqueous solution E water-soluble initiator is 100:10, and the dropping time is After 2 hours, after the dropwise addition, ...

Embodiment 2

[0015] Example 2: Polyethylene glycol (PEG400) and maleic anhydride were mixed uniformly at a molar ratio of 1:0.5 to prepare solution A; pure formic acid was added to solution A, and the mass ratio of solution A to acid was 100:5 , then heated up to 40°C, reacted for 3.5 hours, and obtained esterification product B; product B, functional monomer methacrylic acid and vinyl monomer methyl methacrylate were mixed in a mass ratio of 1:3:1.2 homogeneously, monomer solution C is obtained; solution C, molecular weight regulator ethanethiol and water are mixed uniformly in a mass ratio of 1:0.04:5 to obtain monomer mixed solution D; water is mixed with water-soluble initiator persulfuric acid Potassium is uniformly mixed at a mass ratio of 1:0.005 to obtain an aqueous initiator solution E; at 50°C, add the aqueous initiator solution E dropwise to the monomer mixed solution D, wherein the monomer mixed solution D and the aqueous initiator E solution are water-soluble to initiate The m...

Embodiment 3

[0016] Example 3: Polyethylene glycol (PEG600) and maleic anhydride are mixed uniformly at a molar ratio of 1:1.0 to prepare solution A; pure acetic acid is added to solution A, and the mass ratio of solution A to acid is 100:8, Then the temperature was raised to 50° C. and reacted for 3 hours to obtain the esterification product B; the product B, the functional monomer itaconic acid and the vinyl monomer ethyl acrylate were uniformly mixed in a mass ratio of 1:8:0.8 to prepare Obtain monomer solution C; Mix solution C, molecular weight regulator triethanolamine and water in a mass ratio of 1:0.01:3 to obtain monomer mixed solution D; mix water with water-soluble initiator ammonium persulfate-sulfurous acid (Hydrogen) sodium is mixed uniformly at a mass ratio of 1:0.009 to obtain an aqueous initiator solution E; at 70°C, add the aqueous initiator solution E dropwise to the monomer mixed solution D, wherein the mixed monomer solution D and the aqueous initiator E The mass ratio...

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Abstract

The invention discloses a preparation method of a polymer ceramic dispersant, which is characterized in that polyethylene glycol and maleic anhydride are uniformly mixed and polymerized to obtain a semi-esterification product; the semi-esterification product, vinyl monomer and water are uniformly mixed to carry out free radical polymerization under the inducement of initiating agent so as to obtain the polymer ceramic dispersant. The product prepared by adopting the invention has excellent dispersion dilution effect and grinding-aid effect on the ceramic slurry, improves the billet strength and the billet yield, thus reducing the production cost; meanwhile, the indexes such as the density and the folding resistance strength, etc. of the ceramic product are greatly reinforced. Furthermore,the product can be also used for the dispersion of dye and coating, etc.

Description

technical field [0001] The invention relates to a preparation method of a polymer dispersant, in particular to a preparation method of a polymer ceramic dispersant. Background technique [0002] With the fine development of the ceramic industry, new molding processes emerge in an endless stream, such as centrifugal film injection molding, gel injection molding, colloidal vibration molding, low temperature condensation molding, direct solidification injection molding, permeation curing molding, etc., and many molding The process requires the preparation of ceramic slurry with low viscosity, high dispersion, high stability and high solid content. The solution is mainly to use a dispersant in the process to improve the rheology of the slurry, improve the uniformity of its microstructure and improve its strength. [0003] At present, ceramic dispersants are divided into three categories: inorganic dispersants, organic dispersants and polymer dispersants. Inorganic dispersants ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/52B01F17/34C04B24/24C04B35/634C09K23/52C09K23/34
Inventor 王海花沈一丁费贵强李小瑞
Owner SHAANXI UNIV OF SCI & TECH
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