Method for preparing rosin modified glass fiber reinforced plastic resin

Abstract

The invention relates to a method for preparing rosin modified glass fiber reinforced plastic resin. Due to material proportion and catalyst optimization, the reaction speed is improved, the reaction gets stable, mild and is easy to control under lower temperature, therefore, excellent products of light color and high impact strength are obtained; the material formula is as follows: the molar ratio of rosin, crylic acid, ethylene glycol, glycol and fumaric is 1:1.3:1.5:2.3:2.3; the use amount of catalyst of vanadium pentoxide is 1-2% of the total material weight; the use amount of styrene is 30-45% of the total material weight; and the product is obtained through the processes of addition, esterification, polycondensation and mixing.

Description

technical field [0001] The invention belongs to a rosin deep processing method. Background technique [0002] Rosin is a rich renewable resource in my country, with an annual output of more than 600,000 tons, ranking first in the world. It is composed of a series of resin acids, with a unique chemical structure and multiple chiral centers. The carboxyl group and phenanthrene ring skeleton in the structure can undergo a series of chemical modifications, and it is a natural chiral source material. Rosin can be chemically modified to obtain a series of deep-processing products, which are widely used in various fields in daily life and play a pivotal role in the development of the national economy. The value of these deep-processed products is 2-10 times or even dozens of times higher than that of raw material rosin. At present, my country mainly earns foreign exchange by exporting gum rosin. my country is the country with the largest export volume of gum rosin, accounting for...

AI Technical Summary

Problems solved by technology

In recent decades, in terms of deep processing of rosin, there has been no major progress in its product types and preparation methods; the preparation methods of existing technology products have shortcomings such as slow reaction and long time consumption.

[0003] Through the search of China's public patents, 16 related invention patents and 4 utility model patents were found, but no solution identical to this patent application was found