Aluminum hydroxide synergistic red phosphorus flame-retardant PA6 reinforced material and preparation method thereof

Abstract

The invention relates to an aluminum hydroxide synergistic red phosphorus flame-retardant PA6 (polyamide 6) reinforced material and a preparation method thereof, and the PA6 reinforced material comprises the following components in percentage by weight: 45-65% of PA6 resin, 15-40% of glass fiber, 10-15% of red phosphorus master batch, 0.3-0.5% of lubricant, 3-5% of aluminum hydroxide subjected to surface pretreatment, 0.2-0.4% of antioxidant and 1-2% of black master batch. And the flame retardant property can reach 1.6 mm V0 grade. Under the condition of the same glass fiber content, compared with a common PA6 fiber-added red phosphorus flame-retardant material, the PA6 fiber-added red phosphorus flame-retardant material added with the aluminum hydroxide subjected to surface pretreatment for synergistic flame retardance has the advantages that when the same flame-retardant level is reached, the aluminum hydroxide can equivalently replace red phosphorus master batches, and the tensile property and the impact property of the material are basically kept unchanged; the mechanical property of the material is not influenced, the formula cost can be effectively reduced, and the market competitiveness of products is improved.

Description

technical field [0001] The invention relates to the flame-retardant modification of nylon 6, and belongs to the technical field of flame-retardant modification of polymer materials, in particular to a low-cost aluminum hydroxide synergistic red phosphorus flame-retardant PA6 reinforcing material and a preparation method thereof. Background technique [0002] At present, the most common method to improve the flame retardancy of composite polymer materials is to add flame retardants during its preparation. A large number of emerging flame retardants such as halogen (such as chloride, bromide, etc.), nitrogen (such as dicyandiamide, biurea, guanidine salt, melamine and its salts, etc.), phosphorus (such as ammonium polyphosphate, phosphoric acid, etc.) ester, phosphazene, phosphine and phosphorus oxide, etc.), silicon-based (such as silicone oil, silicone resin, silicone rubber, polysiloxane with functional groups, polycarbonate-siloxane copolymer, etc.), inorganic flame retard...

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Problems solved by technology

[0009] On the other hand, although red phosphorus treated with microcapsules has a good flame retardant effect, the price of red phosphorus is expensive. For example, the price of red phosphorus masterbatch is 20,000-30,000 yuan / T. The high price limits the application of red phosphorus

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