Polyester emulsion for glass fiber impregnating agent

Abstract

The invention discloses a polyester emulsion for a glass fiber impregnating agent and relates to the technical field of glass fiber production. The polyester emulsion comprises the following components in percentage by weight: 30-45% of m-phthalic acid, 3.0-6.0% of phthalic anhydride, 8-15% of fumaric acid, 10-20% of polyethylene glycol, 15-25% of neopentyl glycol, 25-35% of propylene glycol and 1.0-3.5% of hydroquinone. The polyester emulsion for the impregnating agent in the percentage by weight is stable in performance and long in service life. By adopting the polyester emulsion in the production process of glass fibers, the mechanical property, choppability, bundling property and impregnating rate of the glass fibers are greatly improved. Materials for preparation are wide in source and low in cost and the whole synthetic process is good in stability and high in efficiency.

Description

technical field [0001] The invention relates to the technical field of glass fiber production, in particular to a polyester emulsion for glass fiber sizing. Background technique [0002] The key to the development of new glass fiber varieties lies in the sizing agent technology. The important component of the sizing agent is the film-forming agent, which not only protects the fibers, but also affects the stiffness, bunching, chopping, dispersibility and penetration of the glass fibers. Therefore, if the desired film-forming agent is developed, new glass fiber products can be developed. The development and research of glass fiber sizing agents are highly valued abroad, whether it is the US OFC company or PPG company , Japan's -67 company or France's Saint-Gobain company all have strong scientific research and development centers, and have a large number of scientific research results in the development of infiltration agent varieties every year. Theoretical research, China's...

AI Technical Summary

Problems solved by technology

[0002] The key to the development of new glass fiber varieties lies in the technology of sizing agent. The important component of sizing agent is film-forming agent. Glass fiber stiffness, clustering, chopping, dispersibility, penetrability, etc. play a key role. Therefore, if the desired film-forming agent is developed, new glass fiber products can be developed, and the development of glass fiber sizing agent and Research is highly valued abroad. Whether it is the American OFC company or PPG company, Japan's -67 company or France's Saint-Gobain company, they all have strong scientific research and development centers, and have a large number of scientific research results in the development of infiltrant varieties every year. At the same time, major companies have to pay huge sums of money to universities for research on basic theories. At present, the film-forming agent for glass fiber jet yarn in China is mainly polyvinyl acetate emulsion. Since polyvinyl acetate emulsion uses polyvinyl alcohol as a colloidal protective agent, Combined with the matrix resin, the penetrability is poor, so it is necessary to develop a polyester emulsion with excellent performance