Environment-friendly low-density EPS sheet bar and preparation technology thereof

Abstract

The invention discloses an environment-friendly low-density EPS sheet bar, and relates to the technical field of EPS. The environment-friendly low-density EPS sheet bar is prepared from the followingcomponents in parts by mass: 100-200 parts of styrene resin, 50-80 parts of volatile polystyrene, 2-6 parts of a foaming agent, 50-80 parts of epoxy resin, 50-80 parts of unsaturated polyester, 2-4 parts of polycarbonate, 30-50 parts of expandable graphite, 30-50 parts of nano silicon dioxide, 50-80 parts of carbon fibers, 1-5 parts of a curing agent, 1-2 parts of a coupling agent, 1-2 parts of alubricating agent, 1-4 parts of a compatilizer, 2-4 parts of a dispersant, 0.1-0.3 part of nitrogen, 50-70 parts of mountain flour, 2-4 parts of zinc borate and 2-4 parts of a grain refiner. The environment-friendly low-density EPS sheet bar and a preparation technology thereof are capable of realizing own fire resistance of the EPS sheet bar, and reducing overall density of the EPS sheet bar through the nano silicon dioxide and the carbon fibers. In addition, the volatile polystyrene is easy to be processed and formed, so the EPS sheet bar is convenient for recycling and remodeling, and environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of EPS, in particular to an environment-friendly low-density EPS sheet and a preparation process thereof. Background technique [0002] Polystyrene foam is a light polymer. It uses polystyrene resin to add foaming agent, while heating to soften, generate gas, and form a foam plastic with a rigid closed-cell structure. [0003] Its processing method can be divided into pattern method and extrusion method according to the different foaming methods. This uniform and closed cavity structure makes EPS have the characteristics of low water absorption, good heat preservation, light weight and high mechanical strength. Northern Europe began to use EPS for civil engineering in the late 1960s. In 1971, the Norwegian National Road Research Laboratory for the first time used EPS to replace the 1m thick ordinary filler in the FLOM bridge approach renovation project, successfully controlling the uneven settlement of th...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides an environmentally friendly low-density EPS sheet and its preparation process, which solves the problem that the current EPS sheet usually uses fireproof materials on the surface, which cannot fundamentally solve the purpose of fire prevention, and at the same time increases The quality and density of the EPS sheet is reduced, and the recycling of the EPS sheet is a difficult problem. If the recycling is unfavorable, it will cause serious environmental pollution.