Hydrogel-containing unsaturated polyester resin flame-retardant composite material and preparation method thereof

Abstract

The invention relates to a composite flame retardant material of hydrogel unsaturated polyester resin and the preparation method. The preparation materials comprise unsaturated polyester resin 100, emulsifier 0-20, solidifying agent 0.5-3, promoter 0.05-1.5, initiator 0.02-2, cross-bonding agent 0.05-5, water-soluble monomer 1-50, and water 50 -100 in mass percent. The preparation method comprises the steps of dissolving the cross-bonding in the solution of water soluble monomer and inputting nitrogen and avoiding oxygen for 30 minutes, then filtering; dissolving the initiator and the emulsifier in the filtered solution; emulsification of hydrogel unsaturated polyester resin; adding solidifying agent and promoter to the unsaturated polyester resin emulsion to solidify. The composite flame retardant material of hydrogel unsaturated polyester resin has the advantages of high and stable preserving water rate, good flame retardant capability and dimensional stability, improving the fracture elongation and toughness, uneasy cracking, good mechanical properties, and the surface is uneasy cracking when heated or combusted. The material can be widely used in artificial timber and tar filtering, foam, thermal insulation for buildings, decoration, glass fiber reinforced plastic and other materials.

Description

technical field [0001] The invention belongs to the technical field of polymers and composite materials, and more specifically relates to the improvement and innovation of a hydrogel unsaturated polyester resin flame-retardant composite material and a preparation method thereof. Background technique [0002] In recent years, with the continuous advancement of industrial technology, the performance requirements of new materials are getting higher and higher. Especially for some specific materials, special properties are required, which requires researchers to continuously explore new materials or general materials. Modified to meet needs. The latter approach tends to be faster to implement in most studies. [0003] Unsaturated polyester resin has excellent comprehensive properties and is widely used due to its diverse molding. It is mainly used in glass fiber reinforced plastics, followed by castings, anchoring agents, coatings, handicrafts, insulating materials and home de...

AI Technical Summary

Problems solved by technology

However, the water-containing unsaturated polyester resin also has many shortcomings: first, the water-retaining rate of the water-containing unsaturated polyester is relatively low, and it will lose water at a faster rate when placed in the air for a long time, thereby weakening or losing the flame retardancy, and at the same time causing the size shrink

Second, although it has obvious flame retardant properties in the case of high moisture content, excessive moisture content leads to a significant decline in the mechanical properties of the material

Third, as the moisture content increases, the elongation at break decreases sharply, resulting in greater brittleness and easy cracking of the material

Fourth, the situation that the surface is prone to cracks when the material is heated or burned has not been improved

These problems have greatly hindered the practical application of water-containing unsaturated polyester resins