Resin-based composite material additive type flame retardant, flame-retarding composite material and preparation methods thereof

Abstract

The invention discloses a resin-based composite material additive type flame retardant, which is prepared by mixing 30 to 50 parts of aluminium hydroxide, 0 to 20 parts of microcapsulated red phosphorus and 1 to 20 parts of dimethylmethylphosphonate. The invention also discloses a flame-retarding composite material, which is prepared mainly from a resin substrate, a reinforcing material, a curing agent and the flame retardant, wherein the ratio of the resin substrate to the flame retardant is 100:(31-80). The preparation method of the flame-retarding composite material comprises the following steps: preparing materials; adding the flame retardant; adding assistant; and forming by solidification. The flame retardant and the flame-retarding composite material have the advantages of low cost, simplicity of preparation, convenience for use, high flame retarding effect and the like.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to an additive flame retardant for composite materials, a flame-retardant composite material and a preparation method thereof. Background technique [0002] Compared with traditional materials, composite materials have the advantages of strong designability, high comprehensive performance and diversified functions, and have become indispensable basic materials for the development of modern industry, national defense and science and technology. As an important part of composite materials, resin-based composite materials are more and more widely used, and their safety requirements are also getting higher and higher. Among them, the improvement of the flame retardancy of resin-based composite materials has become one of the important directions of research on resin-based composite materials. [0003] Resin-based composite materials are generally composed of a reinforcement phase and...

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Problems solved by technology

[0004] The first reactive flame retardant method has better product transparency and physical and mechanical properties, but the manufacturing process is more complicated and the cost is higher; the second halogenated (or bromination) or the method of introducing phosphorus, nitrogen and other flame retardant elements is not widely used at present; the third additive flame retardant method is widely used because of its simple process, low cost and good flame retardant effect, but The use of a large amount of flame retardants will greatly reduce the physical and mechanical properties of the product, and will increase the viscosity of the resin system, making it unsuitable for low-cost preparation of composite materials in liquid phase impregnation molding technology, such as resin transfer molding. Plastic process RTM (Resin Transfer Molding), vacuum infusion process VIMP (Vacuum Infiltration Molding Process), etc.