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Flame retardant polyamide resin composition and preparation method thereof

A resin composition and technology of flame retardant polyamide, applied in the field of flame retardant polyamide resin, can solve problems such as poor flame retardant effect of halogen-free flame retardant, achieve excellent flame retardant effect, improve flame retardant effect, and good flame retardant effect effect of effect

Active Publication Date: 2020-05-05
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a halogen-free flame-retardant polyamide resin composition with good flame-retardant effect and its preparation method in order to overcome the disadvantages of the poor flame-retardant effect of the above-mentioned prior art halogen-free flame retardants

Method used

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  • Flame retardant polyamide resin composition and preparation method thereof
  • Flame retardant polyamide resin composition and preparation method thereof
  • Flame retardant polyamide resin composition and preparation method thereof

Examples

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preparation example Construction

[0069] The preparation steps of complexes of the present invention are as follows:

[0070] (a) dissolving tin salt I or tin salt IV in X, where X is ethanol;

[0071] (b) Dissolving triphenylphosphine in Y and adding it to the system of step (a) and heating to 60-75°C for reflux for 2-6 hours, Y being ethanol;

[0072] (c) filtering, washing and drying to obtain the complex;

[0073] In parts by weight, the addition of each material is as follows:

[0074]

[0075] The present invention prepares triphenylphosphine tin protochloride complexes, triphenylphosphine tin chloride complexes, triphenylphosphine stannous cyanurate complexes and triphenylphosphine tin cyanurate complexes respectively by the above preparation method .

[0076] The preparation steps of the hybrid salt of the present invention are as follows:

[0077] (i) After dispersing A and tin salt I, tin salt II, tin salt III or the complex in solvent c, stir at a temperature of 40-90°C for 0.5-4 hours, solve...

Embodiment 1

[0083] The preparation method of the flame-retardant polyamide resin composition, in parts by weight, 82 parts of nylon 6, 13 parts of stannous cyanurate, 22 parts of aluminum methyl phosphinate and 1 part of stearic acid are melted together Mix to obtain flame retardant polyamide resin composition, wherein, the temperature of melt blending is 220 ℃, after melt blending, cool with pure water, the structure of stannous cyanurate is:

[0084]

[0085] The flame retardant grade of the finally prepared flame retardant polyamide resin composition reaches UL94-V0, the limiting oxygen index is 40%, the GWIT is 880°C, and the GWFI is 960°C.

Embodiment 2

[0087] The preparation method of the flame-retardant polyamide resin composition is prepared by melting and blending 75 parts of nylon 12, 26 parts of stannous cyanurate and 6 parts of aluminum methyl phosphinate in parts by weight to obtain a flame-retardant polyamide The resin composition, wherein, the temperature of the melt-blending is 235° C., after the melt-blending, it is cooled with nitrogen with a purity ≥ 99.9%, and the structure of stannous cyanurate is:

[0088]

[0089] The flame retardant grade of the finally prepared flame retardant polyamide resin composition reaches UL94-V0, the limiting oxygen index is 40%, the GWIT is 850°C, and the GWFI is 960°C.

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Abstract

The invention relates to a flame-retarding polyamide resin composition and a preparation method thereof. The preparation method comprises the following step: melting and blending polyamide resin, a tin-containing compound, organic hypophosphite and a processing auxiliary agent to prepare the flame-retarding polyamide resin composition. The tin-containing compound is more than one of tin salt I, tin salt II, tin salt III, a complex and hybridized salt; the tin salt I, the tin salt II and the tin salt III are compounds formed by combining metal ions and acid group anions through ion bonds; the metal ions are tin ions or stannous ions; the acid group anions are cyanurate ions, hypophosphite ions and 2-carboxethylphenyl hypophosphite ions; the complex is a compound formed by combining triphenylphosphine and the tin salt I or thin salt IV through a coordination bond; the tin salt IV is stannous chloride or tin chloride; the hybridized salt is melamine cyanurate formed by hybridizing tin salt I, the tin salt II, the tin salt III or the complex. The method is simple and feasible and the prepared polyamide resin composition has a good flame-retarding effect.

Description

technical field [0001] The invention belongs to the field of flame-retardant polyamide resins, and relates to a flame-retardant polyamide resin composition and a preparation method thereof. Background technique [0002] Polyamide, commonly known as nylon (PA), refers to a linear polymer with repeated amide groups on its main chain. Nylon (PA) is a general-purpose engineering plastic with large output, many varieties, wide application and excellent comprehensive performance, and it is also an important synthetic fiber material. According to the number of carbon atoms in the polyamide unit chain, polyamide can be divided into PA6, PA11, PA12, PA46, PA66, PA612, PA1010, high temperature resistant polyamide, long carbon chain polyamide and new polyamide elastomer, etc. . Among polyamide series products, PA6 and PA66 have the largest production and consumption, accounting for about 90% of polyamide production. [0003] Common polyamide flame retardants are halogen-containing f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08K5/3492C08K5/5313C08K3/32C08K5/00C08K5/5397
CPCC08K3/32C08K5/00C08K5/34924C08K5/34928C08K5/5313C08K5/5397C08K2201/014C08L77/02C08L77/06C08L2201/02C08L2201/22C08L2205/02C08L2205/025
Inventor 彭治汉李换换翟一霖秦铭骏郭承鑫彭治权何小春
Owner DONGHUA UNIV
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