Pultrusion resin for producing frame structure for shallow sea culture

Abstract

The invention relates to pultrusion resin for producing a frame structure for shallow sea culture. The pultrusion resin is prepared from the following raw materials in a first step: 20 to 40 parts of neopentyl glycol, 10 to 20 parts of isophthalic acid, 10 to 20 parts of tetrahydrophthalic anhydride and 0.05 to 0.15 part of tetrabutyl titanate, and raw materials in a second step: 15 to 30 parts of methylpropanediol, 30 to 40 parts of fumaric acid, 0.01 to 0.05 part of benzenediol and 0.01 to 0.05 part of 2, 6-di-tert-butyl-4-cresol. The preparation method comprises the steps of detecting the selected raw materials, and feeding according to a formula sheet after the selected raw materials are confirmed to be qualified; after feeding is finished, carrying out operation strictly according to the determined manufacturing process; after the first central control acid value of a semi-finished product meets the requirement, performing decompression (nitrogen filling) dehydration; after the second central control acid value meets the requirement, cooling and diluting; and after dilution is finished, detecting the acid value, viscosity and gelation time of a finished product , conducting fine adjustment according to detection results and product requirement indexes, and conducting packaging till all the indexes are qualified. The pultrusion resin meets the performance requirements of seawater corrosion resistance and high bending strength, and the production cost is low.

Description

technical field [0001] The invention relates to a resin, in particular to a pultrusion resin. Background technique [0002] In the composite material molding process, when the product is a pipe, rod or continuous shaped profile, a pultrusion molding process with unsaturated polyester resin as the matrix and continuous glass fiber filaments or surface mat reinforcement is usually used. This molding method is a continuous and highly automated production process with high production efficiency and stable product quality. Pultruded FRP products have the advantages of high strength and rigidity in the pultrusion direction, high dimensional accuracy, and smooth surface. After decades of continuous improvement and optimization of pultrusion technology and equipment, pultrusion FRP products have been widely used in chemical, petroleum, construction, electric power, transportation, automobile and other fields. [0003] After the founding of New China, my country's mariculture devel...

AI Technical Summary

Problems solved by technology

At the same time, it also drives the application of composite materials. At present, the frame structure parts for shallow sea culture are made of epoxy resin as the matrix resin, but the processing technology of epoxy resin is relatively complicated, and the matrix resin is expensive (35,000 yuan / ton around), making the input cost of shallow sea aquaculture relatively large