A kind of acrylic acid grafted polyvinyl alcohol reinforcing agent and its preparation method and application

Abstract

The invention discloses an acrylic acid grafted polyvinyl alcohol reinforcing agent as well as its preparation method and application. The preparation method comprises the following steps: weighing 0.1-1 part of polyvinyl alcohol, adding it to 4-10 parts of water, heating at 60-90° C. for 1-5 hours to gelatinize the polyvinyl alcohol; then adding 1-5 parts of acrylic acid, Then add alkali to adjust the pH value to 7-8, then add 0.01-0.1 part of initiator, and react at 60-90° C. for 2-6 hours to obtain the acrylic acid grafted polyvinyl alcohol reinforcing agent. The preparation method of the present invention takes the polyvinyl alcohol chain as the skeleton, grafts polyacrylic acid branched chains with certain flexibility, and forms a block macromolecular structure with branched chains, and the obtained reinforcing agent has a better reinforcing effect. The nano glaze slurry of the invented enhancer is applied on the surface of the ceramic body, which is not easy to crack; and has little effect on the viscosity and fluidity of the glaze slurry, and the thickness of the glaze surface of the body surface is not affected when the traditional method is used for glazing.

Description

technical field [0001] The invention belongs to the technical field of preparation of ceramic reinforcing agents, and in particular relates to an acrylic acid grafted polyvinyl alcohol reinforcing agent and its preparation method and application. Background technique [0002] As a representative of emerging technologies in the 21st century, nanotechnology is widely used in chemistry, materials, biology, medicine, computers, printing and other fields. Among them, the ceramic glaze is improved in formula, added with grinding aid, and then ground for a certain period of time by a nano-grinder to obtain the particle size (d 90 ) less than 1000nm quasi-nanometer glaze, commonly known as nano-glaze in ceramic production. [0003] According to the traditional glazing process (glaze dipping, glaze spraying, glaze spraying, etc.), the nano-glaze slurry is applied to the surface of the ceramic body (including green body, low-temperature green body, high-temperature green body, etc.),...

AI Technical Summary

Problems solved by technology

When the nano-glaze slurry is applied to the ceramic body, due to the extremely fine particle size of the nano-glaze, when the glaze slurry is dried and sintered, the glaze surface will crack and shrink to a certain extent, which greatly affects the application of the nano-glaze.