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Environment-friendly flame retardant glass fiber reinforced polyethylene terephthalate (PET) material with high comparative tracking index (CTI) value and high glow wire ignition temperature (GWIT) value and preparation method thereof

An environmentally friendly, glass fiber technology, applied in the field of composite materials, to achieve the effect of short residence time, lower friction coefficient, and environmental protection of composite materials

Inactive Publication Date: 2015-05-06
SHANGHAI SUNNY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there have been no reports on composite materials that integrate the advantages of high GWIT value, high CTI value, environmental protection, and comprehensive performance balance.

Method used

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  • Environment-friendly flame retardant glass fiber reinforced polyethylene terephthalate (PET) material with high comparative tracking index (CTI) value and high glow wire ignition temperature (GWIT) value and preparation method thereof
  • Environment-friendly flame retardant glass fiber reinforced polyethylene terephthalate (PET) material with high comparative tracking index (CTI) value and high glow wire ignition temperature (GWIT) value and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1 Preparation of PET composite material (1)

[0038] The intrinsic viscosity of PET is 1.0 dL / g. The compound flame retardant is composed of raw materials with a weight percentage of BPS 50%, magnesium hypophosphite 25% and talc 25%. The glass fiber is surface treated with silane coupling agent. E-glass fiber, the toughening agent is ethylene-methyl acrylate-glycidyl methacrylate random terpolymer, the antioxidant is antioxidant 1330, and the oxide is iron oxide.

[0039] Weigh each raw material component according to the following weight percentages: PET 45%, compound flame retardant 20%, antimony trioxide 4%, glass fiber 20%, toughening agent 10%, antioxidant 0.1%, oxidation Material 0.9%. Put the weighed raw materials into a high-mixer, mix for 2 minutes, discharge the material, and then extrude and granulate with a twin-screw extruder; the processing temperature of the twin-screw extruder is 230~240℃, The exit machine includes nine temperature zones, one of whi...

Embodiment 2

[0040] Example 2 Preparation of PET composite material (2)

[0041] The intrinsic viscosity of PET is 0.8 dL / g. The compound flame retardant is composed of raw materials containing 50% by weight of BPS, 25% of magnesium hypophosphite and 25% of talc. The glass fiber is surface treated with silane coupling agent. E-glass fiber, the toughening agent is ethylene-methyl acrylate-glycidyl methacrylate random terpolymer, the antioxidant is antioxidant 1010, and the oxide is iron oxide.

[0042] Weigh the raw material components according to the following weight percentages: PET 55%, compound flame retardant 8%, antimony trioxide 3%, glass fiber 30%, toughening agent 2%, antioxidant 1%, oxidation 物1%. Put the weighed raw materials into a high-mixer, mix for 5 minutes, discharge the material, and then extrude and pelletize with a twin-screw extruder; the processing temperature of the twin-screw extruder is 230~240℃, The exit machine includes nine temperature zones, one of which is 230℃, ...

Embodiment 3

[0043] Example 3 Preparation of PET composite material (3)

[0044] The intrinsic viscosity of PET is 1 dL / g. The compound flame retardant is composed of raw materials with a weight percentage of BPS 50%, magnesium hypophosphite 25% and talc 25%. The toughening agent is ethylene-methyl acrylate binary Copolymer, the antioxidant is antioxidant 1330, and the oxide is alumina.

[0045] Weigh each raw material component according to the following weight percentages: PET 50%, compound flame retardant 13%, antimony trioxide 3%, glass fiber 25%, toughening agent 8%, antioxidant 0.5%, oxidation 物0.5%. The weighed raw materials are put into a high-mixer, mixed for 3 minutes, discharged, and then extruded and pelletized by a twin-screw extruder; the processing temperature of the twin-screw extruder is 230~240℃, The exit machine includes nine temperature zones, one of which is 230℃, the second is 230℃, the third is 235℃, the fourth is 235℃, the fifth is 240℃, the sixth is 240℃, the seventh ...

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Abstract

The invention discloses an environment-friendly flame retardant glass fiber reinforced polyethylene terephthalate (PET) material with high comparative tracking index (CTI) value and high glow wire ignition temperature (GWIT) value, which comprises the raw material components by weight percent: 45-68% of PET, 6-20% of compound fire retardant, 3-15% of antimonous oxide, 20-30% of glass fiber, 2-10% of toughening agent, 0.1-1% of antioxidant and 0.1-1% of oxide, wherein the compound fire retardant comprises brominated polystyrene, magnesium hypophosphite and talcum powder. The invention also discloses a preparation method of the environment-friendly flame retardant glass fiber reinforced PET material with high CTI value and high GWIT value. The composite material is higher in GWIT value and CTI value, better in flame retardant effect, environment-friendly in composite material and balanced in combination properties, thus being widely applied to products in the field of electronic electric appliances such as a low-voltage electronic capacitor shell, a load break switch, a carbon brush bracket, a moulded case circuit breaker and the like.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to an environmentally friendly flame-retardant glass fiber reinforced PET material with high CTI value and high GWIT value and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (English name Polyethylene Terephthalate, PET for short) is a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface. The molecular structure of PET is highly symmetrical, and it has a certain crystal orientation ability, so it has high film-forming properties. PET has good optical properties and weather resistance, and amorphous PET has good optical transparency. In addition, PET has excellent wear resistance, friction resistance, dimensional stability and electrical insulation. Bottles made of PET have the advantages of high strength, good transparency, non-toxicity, impermeability, light weight, and high production efficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L25/06C08K13/06C08K9/06C08K7/14C08K3/22C08K3/32C08K3/34B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 郭建鹏孟诚铭
Owner SHANGHAI SUNNY
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