Flame-retardation nylon mold material and preparation method thereof

Abstract

A disclosed flame-retardation nylon mold material is composed of the following raw materials in parts by weight: 0.8-1 part of calcium lactate, 1-2 parts of zinc stannate, 0.1-0.2 part of diallyldimethylammonium chloride, 0.3-1 part of 2-mercaptobenzimidazole, 0.3-1 part of chitosan, 100-130 parts of nylon 66, 110-140 parts of dimethylformamide, 4-6 parts of molybdenum disulfide, 0.1-0.2 part of lithium chloride, 2-3 parts of polystyrene, 20-30 parts of glass fibre, 0.7-1 part of hexadecyl trimethyl ammonium bromide, 1-2 parts of amino tris(methylene phosphonic acid), 2-4 parts of triethyl acetyl citrate, 1-2 parts of tiphenylsilanediol, and 2-3 parts of talcum powder. The added organic modified molybdenum disulfide can be dispersed in the polymer matrix and is capable of effectively improving the thermal stability of the material. Also molybdenum disulfide releases an incombustible gas sulfur dioxide during thermal degradation, and the release effect of sulfur dioxide helps to improve the flame retardation performance of the material.

Description

technical field [0001] The invention relates to the technical field of mold materials, in particular to a flame-retardant nylon mold material and a preparation method thereof. Background technique [0002] As an indispensable tooling for modern industrial production, molds play a decisive role in production. Most of the current molds are made of metal. The quality and life of metal molds are very high, but their production costs are expensive, especially for some complex shapes. Formed metal molds, the production process is extremely complicated, many metal materials also have the defects of difficult processing, long processing cycle, and long repair time after the mold is worn; [0003] With the rapid development of industry, the strength and precision of polymer composite materials have been continuously improved, and the application range of its products has also been continuously expanded. Compared with metal materials, polymer composite materials are cheap to manufactu...

AI Technical Summary

Problems solved by technology

[0006] However, there are many thorny problems in the current research on molybdenum disulfide-based polymer nanocomposites

For example, the high-efficiency stripping of molybdenum disulfide, the dispersion of molybdenum disulfide nanosheets in the polymer matrix, and the low flame retardancy efficiency of a single molybdenum disulfide nanosheet may exist;