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Low-water-absorption good-appearance flame-retarding polyamide composition and preparation method thereof

A technology of polyamide composition and low water absorption, which is applied in the field of polyamide composition with low water absorption and good appearance and flame retardant and its preparation, which can solve the problems of easy warping and surface appearance of unconcerned materials, affecting product appearance, glass fiber Difficult to disperse and other problems, to achieve the effect of excellent mechanical properties, improved appearance, and no floating fibers on the surface

Inactive Publication Date: 2019-04-02
GUANGDONG ALDEX NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned polyamide compositions all improve the water absorption of the polyamide material to a certain extent, they do not pay attention to the easy warping of the material an

Method used

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  • Low-water-absorption good-appearance flame-retarding polyamide composition and preparation method thereof
  • Low-water-absorption good-appearance flame-retarding polyamide composition and preparation method thereof
  • Low-water-absorption good-appearance flame-retarding polyamide composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] In this embodiment, a polyamide composition with low water absorption and good appearance and flame retardancy is prepared from the following raw materials in parts by weight:

[0073]

[0074] Wherein the polyamide functional master batch is made of the following raw materials in parts by weight:

[0075]

[0076]

[0077] Among them, the intrinsic viscosity of MXD6 is 0.8; the intrinsic viscosity of PA66 is 2.7; the glass fiber is E-type glass fiber; the flame retardant is dialkyl hypophosphite; the synergist is zinc borate; the silicone is polydimethyl / methyl Phenylsiloxane, the number-average molecular weight is 2,000,000; the nano-oxide is nano-zinc oxide; the processing aid is N,N'-bis-(3-(3,5- A mixture of di-tert-butyl-4-hydroxyphenyl)propionyl)hexamethylenediamine, tris(2,4-di-tert-butylphenyl)phosphite, 2,4-dihydroxybenzophenone and γ- Aminopropyltriethoxysilane.

[0078] The preparation method of the above-mentioned low water absorption and good ap...

Embodiment 2

[0084] In this embodiment, a polyamide composition with low water absorption and good appearance and flame retardancy is prepared from the following raw materials in parts by weight:

[0085]

[0086] Wherein the polyamide functional master batch is made of the following raw materials in parts by weight:

[0087]

[0088] Among them, the intrinsic viscosity of MXD6 is 0.7; the intrinsic viscosity of PA66 is 3.2; the glass fiber is E-type glass fiber; the flame retardant is dialkyl hypophosphite and melamine polyphosphate with a weight ratio of 9:1; the synergist is a weight ratio 4:1 zinc borate and aluminum hydroxide; silicone is polydimethyl / methylphenylsiloxane with a number average molecular weight of 3,000,000; nano oxide is nano zirconia; processing aid is a weight ratio of 1: 1:1:0.5 of N,N'-bis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl)hexamethylenediamine, tris(2,4-di-tert-butylbenzene base) a mixture of phosphite, zinc stearate and gamma-aminopropyltrime...

Embodiment 3

[0091] In this embodiment, a polyamide composition with low water absorption and good appearance and flame retardancy is prepared from the following raw materials in parts by weight:

[0092]

[0093] Wherein the polyamide functional master batch is made of the following raw materials in parts by weight:

[0094]

[0095]

[0096] Among them, the intrinsic viscosity of MXD6 is 1.2; the intrinsic viscosity of PA66 is 3.0; the glass fiber is E-type glass fiber; the flame retardant is dialkyl hypophosphite and melamine polyphosphate with a weight ratio of 9:1; the synergist is a weight ratio 3:1 zinc borate and magnesium hydroxide; silicone is polydimethyl / methylphenylsiloxane with a number average molecular weight of 2,000,000; nano oxide is nano iron oxide; processing aid is a weight ratio of 1: 2:2:1:0.5 N,N'-bis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl)hexamethylenediamine, tris(2,4-di-tert-butyl A mixture of phosphite, rosin ester wax, calcium stearate and N...

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Abstract

The invention relates to a low-water-absorption good-appearance flame-retarding polyamide composition and a preparation method thereof. The polyamide composition is prepared from, by weight, 45-65 parts of MXD6 and 35-55 parts of PA66 (the sum of weight parts of the MXD6 and PA66 is 100 parts), 15-45 parts of polyamide functional master batch, 20-70 parts of glass fibers, 5-15 parts of a flame retardant, 2-10 parts of a synergist, and 0.5-3 parts of a processing aid; wherein the polyamide functional master batch is composed of, by weight, 25-55 parts of PA66, 30-60 parts of polyketone, 10-30 parts of organic silicon, 2-6 parts of a nano-oxide, 1-5 parts of polyethylene glycol, 0.06-0.3 parts of toluene diisocynate, and 0.01-0.06 parts of dicumyl peroxide. The polyamide composition has excellent flame-retarding effect and mechanical performance, is low in water absorption, is free of floating fibers on the surface, is low in warping and is anti-scraping.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polyamide composition with low water absorption and good appearance and flame retardancy and a preparation method thereof. Background technique [0002] With the development of society, various industries have higher and higher requirements for materials, such as high temperature resistance, high voltage resistance, high humidity resistance, high load resistance, chemical reagent resistance, etc., and good flame retardancy. Polyamides (PA for short) are the most widely used materials in engineering plastics. Because of their excellent mechanical properties, chemical resistance and heat resistance, they are widely used in home appliances, automobiles, electronics and electrical engineering and other fields. Flame-retardant PA6 and PA66 products are generally used in a relatively large amount in flame-retardant polyamides, which have obvious price advantages and account for more ...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L61/02C08L71/02C08L83/04C08K13/04C08K3/38C08K7/14C08K5/3492C08K3/22C08K5/29C08K5/14C08J3/22
CPCC08J3/226C08J2377/06C08J2461/02C08J2471/02C08J2477/06C08J2483/04C08K5/14C08K5/29C08K5/34928C08K7/14C08K13/04C08K2003/2227C08K2003/2296C08K2003/387C08K2201/011
Inventor 易庆锋蓝承东王灿耀于海鸥桑杰
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD
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