High-flowability flame-retardant nylon slice for thin-wall glass fabric composite material as well as preparation method and application of high-flowability flame-retardant nylon slice

Abstract

The invention relates to a high-flowability flame-retardant nylon slice for a thin-wall glass fabric composite material and a preparation method and application thereof, the nylon slice is prepared from the following raw materials in parts by mass: 50-90 parts of nylon slice, 14-45 parts of inorganic hypophosphite, 2-8 parts of synergistic flame retardant, 1-8 parts of antioxidant, 1-8 parts of dispersing agent, 1-8 parts of compatilizer and 1-8 parts of flow modifier A, the nylon slice is applied to the preparation of the thin-wall glass fabric composite material, and the specific method comprises the following steps: drying the nylon slice, and pressing the nylon slice and glass fabric through a tabletting device to form the thin-wall glass fabric composite material. Compared with the prior art, the halogen-free flame-retardant glass fiber reinforced nylon prepared by the invention has an excellent flame-retardant effect, can reach the flame-retardant standard of UL94-V0 (0.2-1mm), and has excellent mechanical properties.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-flow flame-retardant nylon slice for a thin-walled glass fiber cloth composite material and a preparation method and application thereof. Background technique [0002] With the development of polymer material science, polymer materials are more and more widely used in people's daily production and life. At present, in the field of new energy vehicles and aerospace, flame-retardant composite materials of glass fiber mat or carbon fiber mat have more and more uses. In the case of ensuring mechanical strength, flame-retardant composite materials of glass fiber mat or carbon fiber mat are relatively Or ceramic materials are lighter and cheaper. [0003] The materials used for composite glass fiber mat or carbon fiber mat are mainly divided into thermosetting plastics and thermoplastics. The processing conditions of thermosetting plastic composite products are relat...

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Problems solved by technology

[0007] For red phosphorus, the advantages are high flame retardant efficiency and small amount of addition, so it has little impact on product performance, but it faces two problems: one is the color of red phosphorus, which limits its application range, and is usually only used in black products; Second, it is easy to produce highly toxic substances such as phosphine during the processing process, which brings environmental protection and safety problems. Therefore, red phosphorus is not the best choice for glass fiber reinforced nylon materials

The main disadvantage is that it is easy to absorb moisture, which causes inconvenience in use. At the same time, due to the low efficiency of melamine polyphosphate in charring and low flame retardancy, the addition of melamine polyphosphate is relatively large, resulting in a decline in the mechanical properties of the finished product.

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