Halogen-free flame-retarding polyamide composition

A technology of flame-retardant polyamide and composition, which is applied in the field of flame-retardant materials, can solve the problems of difficult mixing of nylon resin and achieve the effects of improving interface compatibility, excellent mechanical properties, and improving dispersibility

Active Publication Date: 2016-11-02
上海安凸塑料添加剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, most studies believe that this may be due to the fact that melamine derivatives have a layered structure and self-lubricating properties, so it is difficult to mix evenly with nylon resin.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 5000g of triglycidyl isocyanurate, place it in a high-speed mixer and stir for 5 minutes at 80°C, and then spray 50.0g of phosphoric acid in mist while maintaining the high-speed stirring of triglycidyl isocyanurate The triphenyl ester was continuously stirred for 10 minutes, and then discharged for the preparation of a halogen-free flame-retardant PA composition.

[0030] The composition and weight percent of the halogen-free flame-retardant PA composition are:

[0031] Shenma PA6 2.4 85wt%; triglycidyl isocyanurate treated with triphenyl phosphate 12wt%; methylsilyl cage silsesquioxane 3wt%; antioxidant 1076 0.2wt%.

[0032] Weigh 850g of PA, 120g of triglycidyl isocyanurate treated with triphenyl phosphate, 30.0g of methylsilyl cage silsesquioxane, 2.0g of antioxidant 1076, the above components After mixing evenly at high speed in a high-speed mixer, add it to a twin-screw extruder. The screw length-to-diameter ratio of the twin-screw extruder is 44, and the t...

Embodiment 2

[0034] Weigh 5000g of melamine cyanurate, place it in a high-speed mixer and stir for 5 minutes at 80°C, then spray 100.0g of tetraphenylbisphenol into it in a mist state while maintaining the high-speed stirring of melamine cyanurate A diphosphate, continue to stir for 10 minutes, then discharge, used for the preparation of halogen-free flame-retardant PA composition.

[0035] The composition and weight percent of the halogen-free flame-retardant PA composition are:

[0036] Shenma PA6 2.7 80wt%; melamine cyanurate treated with tetraphenyl bisphenol A diphosphate 19wt%; vinyl octapolysilsesquioxane 1wt%; antioxidant 1098 0.5wt%.

[0037]Weigh 800g of PA, 190g of melamine cyanurate treated with tetraphenyl bisphenol A diphosphate, 10.0g of vinyl octapolysilsesquioxane, 5.0g of antioxidant 1098, and mix the above After being uniformly mixed at a high speed in a high-speed mixer, it is added to a twin-screw extruder. The screw length-to-diameter ratio of the twin-screw extruder...

Embodiment 3

[0039] Weigh 2500g of triglycidyl isocyanurate and 2500g of melamine, place it in a high-speed mixer at 100°C and stir for 5 minutes, then spray 500.0g of tetrapolycyanurate into 500.0g of melamine derivatives under high-speed stirring. Phenyl resorcinol diphosphate, continued to stir for 10 minutes, and then discharged, used for the preparation of halogen-free flame-retardant PA composition.

[0040] The composition and weight percent of the halogen-free flame-retardant PA composition are:

[0041] Shenma PA66 2.7 90wt%; melamine derivatives treated with tetraphenylresorcinol diphosphate 7wt%; tetramethylammonium cage silsesquioxane 2wt%; antioxidant 1098 1.0wt%.

[0042] Weigh 900g of PA, 70g of tetraphenylresorcinol diphosphate processed melamine derivatives, 20.0g of tetramethylammonium cage silsesquioxane, 10.0g of antioxidant 1098, the above After the components are uniformly mixed at high speed in the high-speed mixer, they are added to the twin-screw extruder. The scr...

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PUM

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Abstract

The invention relates to a halogen-free flame-retarding polyamide composition, which includes, by weight, 73-93 parts of polyamide, 7-23 parts of melamine or a derivative thereof, 0.1-3 parts of silsesquioxane, and 0.1-1 part of an antioxidant, wherein the melamine or the derivative thereof is subjected to organic treatment. Compared with the prior art, the composition has excellent flame-retarding performance. The composition reaches 0.8 mm UL 94 V-0 in flame-retarding performance and 90 J/m in notch impact strength. The composition has simple process, is convenient to produce and can be applied in the fields of electronic appliances, automobiles and the like.

Description

technical field [0001] The invention relates to a flame-retardant material, in particular to a halogen-free flame-retardant polyamide composition. Background technique [0002] Polyamide (PA), that is, nylon (Nylon), is a high molecular polymer containing amide groups in the main chain. It is the variety with the largest output, the most varieties, and the widest application among the five major engineering plastics. Due to its excellent mechanical properties, self-lubricating properties, friction resistance, heat resistance, and electrical insulation properties, polyamides are widely used in the fields of automobiles, machinery, electrical appliances, chemical equipment, aviation, and daily life. [0003] Unmodified PA has poor flame retardancy, its vertical combustion can only reach UL 94V-2 level, the LOI of PA6 is about 22%, and the LOI of PA66 is about 26%, and dripping occurs during the combustion process, which belongs to flammable material. In the fields of electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08K9/04C08K5/3492C08K5/549
CPCC08K5/34922C08K5/34924C08K5/34928C08K5/549C08K9/04C08L77/02C08L77/06
Inventor 袁丽菊董会丛孙利明
Owner 上海安凸塑料添加剂有限公司
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