Sheet molding compound with high flame resistance, low smoke and non-toxic and preparation method thereof

Abstract

The invention relates to a sheet molding compound with high flame resistance, low smoke and non-toxic and a preparation method thereof. The formula of the sheet molding compound comprises the following substance in mass portion: 50-80 portions of unsaturated polyester resin, 15-60 portions of low shrink additive, 1-3 portions of evocating agent, 0.01-0.05 portions of polymerization inhibitor, 0.7-7 portions of wetting and dispersing agent, 3-8 potions of inner mold release agent, 1-2 potions of thickening agent, 20-50 potions of viscosity reduction filler, 100-200 portions of flame retardant A, 50-100 portions of flame retardant B and 50-250 portions of reinforced material; the flame retardant A is micron aluminum hydroxide and the grain diameter is 0.4-3.5 microns; the flame retardant B is nanometer aluminum hydroxide and the grain diameter is 30-80 nanometers. The sheet molding compound of the invention has the advantages of high flame resistance, low smoke and non-toxic, well mechanical performance and surface decorative effect.

Description

technical field [0001] The invention relates to the field of chemical raw materials, in particular to a sheet molding compound with high flame retardancy and low smoke toxicity and a preparation method thereof. Background technique [0002] Decorative materials for vehicles and large public places, especially for large-scale rail transit, not only require high strength, light weight, comfort, and good decorative effects, but also emphasize the safety of decorative and facility materials. As the market continues to develop on a large scale, sheet molding compound molded products have been widely used. This interior material particularly emphasizes its safety, especially the flame retardancy of the material. Therefore, sheet molding compound molded products are used in the production process The raw materials are flame retardant treated. At present, the following methods are generally used for flame retardant treatment of materials: one is to use halogen-containing or phospho...

AI Technical Summary

Problems solved by technology

At present, the following methods are generally used for flame retardant treatment of materials: one is to use halogen-containing or phosphorus-containing flame retardants. And produce a large amount of poisonous gas and smog, which will cause great damage to human life safety; the second is to add a large amount of aluminum hydroxide filler. The advantage of this method is that it can simultaneously improve the fire resistance of the material and control the smoke toxicity, but its disadvantages are: The addition of a large amount of ordinary aluminum hydroxide fillers will greatly reduce the surface quality and mechanical properties of the product, and lose its light weight and high strength characteristics, thus making the decoration or installation easily damaged