Corrosion-resistant halogen-free flame-retardant unsaturated polyester resin and preparation method thereof

Abstract

The invention discloses a corrosion-resistant halogen-free flame-retardant unsaturated polyester resin and a preparation method thereof. The corrosion-resistant halogen-free flame-retardant unsaturated polyester resin is prepared from unsaturated polyester resin, an initiator, filler, a diluent, a flame retardant and a corrosion-resistant auxiliary agent. As the material does not contain halogen,more toxic gas cannot be released during combustion. The flame retardant is metal nano hydroxide, the corrosion resistance of the unsaturated polyester resin can be effectively improved, and the service life of the unsaturated polyester resin is prolonged. In addition, by adding part of modified alumina ceramic powder as the filler, the mechanical strength of the unsaturated polyester resin can befurther strengthened, the aging resistance and ultraviolet radiation resistance are improved, and the corrosion-resistant halogen-free flame-retardant unsaturated polyester resin is not prone to aging. The halogen-free flame-retardant unsaturated polyester resin has the characteristics of good strength, high heat resistance, corrosion resistance and the like, and can be used in the fields of automobiles, wind power, high-speed railways, yachts, buildings, shipbuilding, chemical equipment, electronic appliances and the like.

Description

technical field [0001] The invention relates to the technical field of unsaturated polyester resins, in particular to a corrosion-resistant, halogen-free, flame-retardant unsaturated polyester resin and a preparation method thereof. Background technique [0002] Since the 1930s, polymer materials have been widely used in various fields. While providing convenience, they also bring potential fire risks due to their flammability. In order to reduce the occurrence of fires, countries all over the world are looking for and developing materials with better flame retardant effects; [0003] Unsaturated polyester resin, a linear prepolymer formed by melting polycondensation of dihydric alcohol and unsaturated dibasic acid anhydride or unsaturated dibasic carboxylic acid, saturated dibasic anhydride or saturated dibasic carboxylic acid, under heating, light, Copolymerized with vinyl monomers under the action of radiation and initiators, cross-linked and cured into thermosetting res...

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Problems solved by technology

[0003] Unsaturated polyester resin, a linear prepolymer formed by melting polycondensation of dihydric alcohol and unsaturated dibasic acid anhydride or unsaturated dibasic carboxylic acid, saturated dibasic anhydride or saturated dibasic carboxylic acid, under heating, light, Copolymerized with vinyl monomers under the action of radiation and initiators, cross-linked and cured into thermosetting resins with a network structure, unsaturated polyester resins have long attracted people's attention due to their excellent formability and good comprehensive performance, and are widely used in construction, In the fields of ships, automobiles, electronic appliances, etc., it is the largest type of resin in the field of composite materials, but similar to most hydrocarbons, it is flammable, which limits its application in occasions with high flame retardancy requirements;

[0004] The existing flame retardant technology of unsaturated polyester resin is divided into two types: additive type and reactive type. The reactive type flame retardant unsaturated polyester resin refers to the esterification or The cross-linking monomer containing flame retardant elements is used for curing. Since the flame retardant elements enter the resin structure, it will bring a better flame retardant effect and have a small impact on the process performance and resin performance. However, the reactive flame retardant resin raw material The price is relatively expensive, and the process conditions are strict, which is not conducive to the large-scale production and use of products, and most of them at home and abroad add halogens to the system as flame retardants. Although the introduction of halogens into unsaturated polyester resins has a better flame retardant effect, it reduces the The anti-ultraviolet ability of the flame-retardant matrix material produces a large amount of toxic gases at the same time, which poses a great threat to the environment and personal safety. Add flame retardant additives to achieve flame retardant resin

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