Preparation process of conductive halogen-free flame-retardant PA/PE(polyamide/polyethylene) alloy material

A technology of alloy materials and metals, applied in the field of polymer material preparation, to achieve the effects of improving preparation efficiency, eliminating static electricity, and less process links

Active Publication Date: 2012-10-10
苏州宇度医疗器械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, adding halogen-containing flame retardants to PA is not an ideal choice

Method used

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  • Preparation process of conductive halogen-free flame-retardant PA/PE(polyamide/polyethylene) alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A) To prepare granulation materials, first weigh 180 parts of nylon 6 (PA) resin, 70 parts of medium density polyethylene resin (PE), and the coupling agent is isopropyl 2 parts of triethoxysilane, 20 parts of surface-treated aluminum hydroxide as metal oxide, 50 parts of melamine urate as solid phosphate, and 20 parts of conductive carbon fiber as carbon nanotubes were put into a high-speed mixer and mixed for 20 minutes. The rotating speed of the machine is 600n / min, and then drop into the antioxidant that weighs by parts by weight namely tetrakis [methyl-β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester 0.7 90 parts of alkali-free chopped glass fibers with a length of 3 mm and 1.2 parts of monostearic acid amide as a surface modifier, continue mixing for 5 min to obtain granulated material;

[0019] B) Granulation, put the granulated material obtained in step A) into a twin-screw extruder for melt extrusion, the temperature zones of the screws ...

Embodiment 2

[0021] A) To prepare granulation materials, first weigh 190 parts of nylon 6 (PA) resin, 55 parts of medium density polyethylene resin (PE) and 55 parts of medium density polyethylene resin (PE), and the coupling agent is isopropyl 1.5 parts of triethoxysilane, 24 parts of surface-treated aluminum hydroxide as metal oxide, 40 parts of melamine urate as solid phosphate, and 15 parts of conductive carbon fiber as carbon nanotubes were put into a high-speed mixer and mixed for 10 minutes. The rotating speed of the machine is 1000n / min, and then drop into the antioxidant that takes by weight parts namely tetrakis [methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester 0.9 80 parts of alkali-free chopped glass fibers with a length of 3 mm and 1.6 parts of monostearic acid amide as a surface modifier, and continue mixing for 10 minutes to obtain granules. All the other are the same as the description to embodiment 1.

Embodiment 3

[0023] A) To prepare pellets, first weigh 200 parts of nylon 6 (PA) resin, 60 parts of medium-density polyethylene resin (PE), and the coupling agent is isopropyl 2.5 parts of triethoxysilane, 27 parts of surface-treated aluminum hydroxide as metal oxide, 45 parts of melamine urate as solid phosphate, and 20 parts of conductive carbon fiber as carbon nanotubes were put into a high-speed mixer and mixed for 15 minutes. The rotating speed of the machine is 1500n / min, and then drop into the antioxidant that is weighed by parts by weight i.e. tetrakis [methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester 1.5 95 parts of alkali-free chopped glass fibers with a length of 3 mm and 2 parts of monostearic acid amide as a surface modifier, and continue mixing for 7 minutes to obtain granules. All the other are the same as the description to embodiment 1.

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Abstract

Disclosed is a preparation process of a conductive halogen-free flame-retardant PA/PE(polyamide/polyethylene) alloy material, belonging to the technical field of high-polymer material preparation. The preparation process includes steps of adding 180-200 parts of 6-nylon resin, 55-70 parts of polyethylene resin, 1.5-3.2 parts of coupling agents, 20-30 parts of metallic oxide, 40-55 parts of solid phosphate and 15-26 parts of conductive carbon fibers which are weighed according to weight parts into a high-speed mixer to mix, adding 0.7-1.5 parts of antioxidants, 80-100 parts of glass fibers and 1.2-2.0 parts of surface modifiers which are weighed according to weight parts, and mixing for 5-10 minutes continuously to obtain granulating materials; adding the granulating materials into a double-screw extruder to melt and extrude out while controlling the temperature of a first heating region of screws to be 235 DEG C, the temperature of a second heating region and a third heating region to be 243 DEG C respectively, the temperature of a fourth heating region and a fifth heating region to be 246 DEG C respectively, the temperature of a sixth heating region and a seventh heating region to be 250 DEG C respectively and the temperature of an eighth heating region to be 245 DEG C so as to obtain the halogen-free flame-retardant PA/PE alloy material. The preparation process has the advantages that process links are few, preparation efficiency can be improved, the PA/PE alloy material prepared by the process is conductive, antistatic, environment-friendly and safe.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a preparation method of a conductive halogen-free flame-retardant PA / PE alloy material. Background technique [0002] Adding halogen-containing flame retardants to PA (nylon) materials can achieve ideal flame-retardant effects, but halogen-containing flame retardants will cause toxic and harmful gases to be produced when the material is burned. According to statistics, in fire accidents, disabled persons caused by the release of toxic and harmful gases account for about 40%. Therefore, adding halogen-containing flame retardants to PA is not an ideal choice. In view of this, the halogen-free flame-retardant PA material is favored by people. In addition, if the PA material can have excellent strength and antistatic effect through a reasonable selection of raw materials and an optimal preparation process, then there is no doubt that the PA material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L23/06C08K13/06C08K9/00C08K7/14C08K7/06C08K3/22C08K5/3492C08K5/20C08K5/134B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 陶渭清沈兴元颜卫峰陶立强
Owner 苏州宇度医疗器械有限责任公司
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