Flame-retardant low-smoke-density gel coat and preparation method thereof

Abstract

The invention discloses flame-retardant low-smoke-density gel coat and a preparation method thereof. The flame-retardant low-smoke-density gel coat is prepared from the following raw material components by mass: 35-40% of unsaturated polyester resin, 1-3% of silica, 8-12% of titanium dioxide, 0.3%-0.7% of a defoaming agent, 0.3%-0.7% of a leveling agent, 0.3%-0.7% of an antioxidant, 0.3-0.7% of anultraviolet absorber, 3-5% of a composite viscosity reducer and 42-46% of aluminum hydroxide powder, with the sum of the mass percentages of all components being 100%, wherein the composite viscosityreducer is a mixture of gamma-(2,3-epoxypropoxy)propyl trimethoxysilane and 1-propyl-1-(triethoxysilyl) methylurea in a mass ratio of 1:(0.8-1.2). According to the flame-retardant low-smoke-density gel coat, by using the composite viscosity reducer, the content of the aluminum hydroxide powder is greatly increased, so that the strength of resin is kept very good, smoke is basically avoided aftercombustion, the flame retardance and mechanical property of the gel coat are both considered, and the gel coat has the characteristics of flame retardance, low smoke and high strength; preparation issimple, and the cost is low.

Description

technical field [0001] The invention relates to a flame-retardant low-smoke density gel coat and a preparation method thereof, belonging to the field of gel coats. Background technique [0002] Gel coat resin is a special resin, which is a special resin for making the gel coat layer of FRP products. It mainly plays the role of protecting FRP products, prolonging its service life and decorating its surface. It is crucial to the quality of FRP products. influences. [0003] With the advancement of science and technology, the performance of gel coats is also constantly improving. However, the addition of fire-resistant additives will lead to a decline in mechanical properties, resulting in a failure to balance the fire resistance and mechanical properties of the gel coat. Contents of the invention [0004] The invention provides a flame-retardant low-smoke density gel coat and a preparation method thereof, which take into account the fire resistance and mechanical properties...

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Problems solved by technology

[0003] With the advancement of science and technology, the performance of gel coats is also constantly improving. However, the addition of fire-resistant additives will lead to a decline in mechanical properties, resulting in a balance between the fire resistance and mechanical properties of the gel coat.

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