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Flame-resistant polyphenylether composition and method for preparing same

A polyphenylene ether and composition technology, applied in the field of insulating materials, can solve the problems of flame retardant containing halogen, easy to precipitate flame retardant grade, and no polyphenylene ether composition, etc., to achieve high flame retardancy, high resistance Effects of heat resistance and good workability

Active Publication Date: 2011-07-06
SINOPLAST NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent application document CN101440205 discloses a high heat-resistant halogen-free flame-retardant polyphenylene ether / polystyrene compound, including polyphenylene ether, polystyrene, toughening agent, processing aid and microencapsulated coating red Composite flame retardant composed of phosphorus and phosphate ester, the composition solves the problems of flame retardant containing halogen, easy to precipitate and low flame retardant grade in the existing flame retardant technology, and the products produced have high heat resistance, smooth surface, Environmentally friendly and halogen-free
Therefore, in the prior art, there is no polyphenylene ether composition that can be directly used to form electronic insulating gaskets

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 20 kilograms of γ-(methacryloyl deoxy) propyltrimethoxysilane grafted polybutadiene and 25 kilograms of hydrogenated polystyrene are melt-blended through a twin-screw extruder to obtain 45 kilograms of silane-containing Hydrogenated polystyrene blends of grafted polyolefins. The aforementioned 50 kg of hydrogenated polystyrene blend containing silane-grafted polyolefin was mixed with 100 kg of polyphenylene ether and 45 kg of bis[(5-ethyl-2-methyl-1,3,2-dioxa Phospan-5-ene)methyl]methyl phosphate P, P'-dioxide are melted and blended together through a twin-screw extruder to prepare flame-retardant polyphenylene ether composition particles. The flame retardant polyphenylene ether composition particles are injection molded into standard specimens by an injection molding machine, and then the heat distortion temperature is measured according to the ASTM D648 standard, and the IZOD impact strength is measured according to the ASTM D256 standard, and then pressed into a shee...

Embodiment 2

[0015]4.62 kg of γ-(methacryloyl deoxy) propyltrimethoxysilane grafted binary ethylene propylene rubber and 15.38 kg of hydrogenated polystyrene were melt blended through a twin-screw extruder to obtain 20 kg of Hydrogenated polystyrene blends of silane-grafted polyolefins. The aforementioned 20 kilograms of hydrogenated polystyrene blends containing silane-grafted polyolefin are melt-blended with 100 kilograms of polyphenylene ether and 15 kilograms of oligomeric tetraphenylbisphenol A diphosphate through a twin-screw extruder, Prepare flame-retardant polyphenylene ether composition particles. The flame retardant polyphenylene ether composition particles are injection molded into standard specimens by an injection molding machine, and then the heat distortion temperature is measured according to the ASTM D648 standard, and the IZOD impact strength is measured according to the ASTM D256 standard, and then pressed into a sheet sample with a thickness of 0.5mm by a calender Aft...

Embodiment 3

[0017] 10 kg of γ-(methacryloyl deoxy) propyltrimethoxysilane grafted EPDM rubber and 20 kg of hydrogenated polystyrene were melt blended through a twin-screw extruder to obtain 30 kg of Hydrogenated polystyrene blends of silane-grafted polyolefins. The aforementioned 30 kg hydrogenated polystyrene blend containing silane-grafted polyolefin was melt-blended with 100 kg polyphenylene ether and 20 kg oligomeric tetraphenylresorcinol diphosphate through a twin-screw extruder , to prepare flame-retardant polyphenylene ether composition particles. The flame-retardant polyphenylene ether composition particles are injected into standard specimens by injection molding machine, and then the heat distortion temperature is measured according to the ASTM D648 standard, and the IZOD impact strength is measured according to the ASTM D256 standard, and then pressed into a sheet sample with a thickness of 0.4mm by the calender Afterwards, its flame retardant performance was evaluated accordi...

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Abstract

The present invention relates to a flame-resistant polyphenylether composition and a method for preparing the same, which belong to the field of insulating materials. The flame-resistant polyphenylether composition comprises the following components in part by mass: 100 parts of polyphenylether (A), 20 to 45 parts of hydrogenated polystyrene blend (B) containing silane grafted polyolefine, and 15 to 45 parts of organic phosphate flame retardant (C) of which molecular weight is between 250 and 1,000. The invention also relates to the method for preparing the composition through two steps, which comprises the following steps: dispersing the silane grafted polyolefine in hydrogenated polystyrene through melting and blending; and blending the mixture with the other components. The flame-resistant polyphenylether composition and the method for preparing the same have the advantage of solving the technical problem in the prior art that the flame resistance and the heat resistance of the polyphenylether are greatly reduced due to the toughening and modification of the polyphenylether; and a sheet which is thinner than 0.5 mm and prepared from the composition can reach the flame-retardant rating of UL 94V-0 and heat-resisting temperature of above 130 DEG C. The composition of the present invention has environmental protection property, impact resistance, high flame resistance and high heat resistance and is mainly used for producing insulating gasket products in electronics and electric industries.

Description

technical field [0001] The present invention relates to a kind of flame-retardant polyphenylene ether composition and preparation method thereof, more specifically, the present invention relates to a kind of impact-resistant and heat-resistant environment-friendly flame-retardant polyphenylene ether composition that is used for preparing electronic insulating gasket, It belongs to the field of insulating materials. Background technique [0002] Insulating gaskets are sheet-like polymer materials used in electrical and electronic products to space live parts and prevent leakage and short circuits, and are an essential part of electrical and electronic equipment. At present, the insulating gasket materials widely used in the electrical and electronic industry include PVC, PET, PC, PP, PA and PI. Insulation gaskets are not only required to be processed into a very thin thickness, but also require excellent flame retardancy, heat resistance and electrical properties. Halogen f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L71/12C08L25/04C08L51/00C08L51/06C08K5/521C08K5/523
Inventor 朱怀才洪喜军
Owner SINOPLAST NEW MATERIAL