A kind of halogen-free flame-retardant basalt fiber reinforced unsaturated polyester resin composite material and preparation method thereof

Abstract

Belonging to the field of halogen-free flame retardant polymer composite materials, the invention relates to a halogen-free flame retardant basalt fiber reinforced unsaturated polyester resin composite material and a preparation method thereof. The composite material comprises the following components by weight: 75-95 parts of unsaturated polyester, 5-25 parts of epoxy resin, 6-20 parts of a low shrinkage additive, 30-50 parts of epoxy resin coated ammonium polyphosphate, 6-22 parts of a char-forming agent, 2-10 parts of a char-forming accelerator, 1-5 parts of phenolic resin, 0.5-4.5 parts of a curing agent, 0.5-2.5 parts of an accelerator, 0.2-1.2 parts of an antioxidant, 0.5-3.5 parts of a defoaming agent, 10-20 parts of styrene and 40-140 parts of basalt fiber. According to the invention, the unsaturated polyester resin composite material with high strength, good flame retardation and low shrinkage is successfully prepared.

Description

technical field [0001] The invention belongs to the field of halogen-free flame-retardant polymer composite materials, and relates to a halogen-free flame-retardant basalt fiber reinforced unsaturated polyester resin composite material and a preparation method thereof. Background technique [0002] Unsaturated polyester resin is generally a linear polymer compound with ester bonds and unsaturated double bonds formed by polycondensation of unsaturated dibasic acid diols or saturated dibasic acid unsaturated diols. Under the action of high-energy radiation and initiators, it is copolymerized with vinyl monomers, cross-linked and cured into a thermosetting resin with a network structure. The overall performance of the cured thermosetting resin is not high. Usually, fibers are added to the unsaturated polyester resin to make a composite material to improve its performance. This composite material is widely used in construction, transportation, electronic appliances, chemical equ...

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Problems solved by technology

[0009] Chinese patent CN101235152A provides basalt continuous fiber reinforced resin composite material and its manufacturing method. Although basalt fiber is used in its patent, the basalt fiber used is continuous basalt fiber. Flame-retardant modification of ester resin; Chinese patent CN101845208A provides a kind of unsaturated polyester resin composite material and preparation method, its flame retardant uses ammonium polyphosphate, but the reinforcing fiber used does not involve basalt fiber; Chinese patent CN102408692A provides a double-resistant sheet molding compound with high strength, excellent flame retardancy and strong antistatic ability and its preparation method. Although the reinforcing fiber of this patent uses basalt fiber, polyphosphoric acid is not used in its patent Ammonium flame retardants, and triazine compounds were not used as carbon forming agents, epoxy resins and phenolic resins were used as carbon source binders for expansion systems, and organic montmorillonite and 4A molecular sieves were not used to enhance the strength of the carbon layer; China Patent CN103059553A provides an intumescent flame-retardant glass fiber reinforced unsaturated polyester composite material and its preparation method, but its reinforcing fiber is glass fiber; Chinese patent CN102070869A provides a low-smoke density additive flame-retardant resin, but its Not reinforced with fibers

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