A low-smoke, halogen-free, high-temperature flame-resistant vinyl ester resin and its preparation method

Abstract

The invention relates to a low-smoke, halogen-free, high-temperature-resistant flame-retardant vinyl ester resin and a preparation method thereof, belonging to the technical field of flame-retardant vinyl ester resins. It is prepared from epoxy resin, unsaturated monobasic acid, reactive flame retardant, additive flame retardant, catalyst, polymerization inhibitor and crosslinkable monomer through a series of reactions. The invention is composed of raw materials with low price, low preparation cost, combined with the comprehensive effect of two kinds of flame retardants, reactive type and additive type, and the flame retardant effect is better than similar products on the market; the flame retardant resin is low-smoke and halogen-free, and can replace existing Brominated flame retardant chemically modified vinyl resin with halogen environmental protection issues; moderate viscosity, good construction performance, good anti-settling performance, outstanding corrosion resistance and high temperature resistance, can be used for building materials, automotive parts, etc., especially for FRP products that require low-smoke, halogen-free and flame-retardant requirements such as hand lay-up railway passenger car parts.

Description

technical field [0001] The invention relates to a flame-retardant vinyl ester resin, in particular to a low-smoke, halogen-free, high-temperature-resistant flame-retardant vinyl ester resin and a preparation method thereof. Background technique [0002] The novolac epoxy resin is introduced into the skeleton of the vinyl ester resin, and the synthesized vinyl ester resin is generally called novolac vinyl ester resin. The resin has high thermal stability. After the resin is cured, the cross-linking density is high. Its heat distortion temperature reaches 140-160°C, which can prolong the service life and has excellent corrosion resistance, especially for chlorine-containing solutions or organic solvents. In order to meet the needs of high temperature resistance and strength, many manufacturers have modified phenolic epoxy vinyl ester resin to improve the crosslinking density and heat resistance of the resin, and have excellent acid resistance, solvent corrosion resistance an...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the deficiency of the existing low-smoke, halogen-free, high-temperature flame-retardant vinyl ester resin, and provide a low-smoke, halogen-free, flame-retardant vinyl ester resin and its preparation method

It effectively solves a series of problems in the field of flame-retardant vinyl ester resins, such as unenvironmental protection, poor flame-retardant effect, unstable preparation process, etc.

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