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Environment-friendly and flame-retardant glass fiber reinforced PBT (polybutylene terephthalate)/ABS (acrylonitrile butadiene styrene) alloy material with high CTI (comparative tracking index) value and high GWIT (glow-wire ignition temperature) value and preparation method thereof

An alloy material and environmental protection technology, applied in the field of alloy materials, to achieve the effect of environmental protection of composite materials, improving impact performance and reducing friction coefficient

Inactive Publication Date: 2013-03-13
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 alloy materials that combine the advantages of high GWIT value, high CTI value, environmental protection, and comprehensive performance balance.

Method used

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  • Environment-friendly and flame-retardant glass fiber reinforced PBT (polybutylene terephthalate)/ABS (acrylonitrile butadiene styrene) alloy material with high CTI (comparative tracking index) value and high GWIT (glow-wire ignition temperature) value and preparation method thereof
  • Environment-friendly and flame-retardant glass fiber reinforced PBT (polybutylene terephthalate)/ABS (acrylonitrile butadiene styrene) alloy material with high CTI (comparative tracking index) value and high GWIT (glow-wire ignition temperature) value and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Preparation of Example 1 PBT / ABS alloy material (1)

[0040] The intrinsic viscosity of PBT is 1.0 dL / g. The composite flame retardant is composed of 50% by weight of BPS, 25% of magnesium hypophosphite and 25% of talcum powder. The surface of glass fiber is treated with silane coupling agent. Alkali-free glass fiber, the toughening agent is ethylene-methyl acrylate-glycidyl methacrylate random terpolymer, the antioxidant is antioxidant 1330, and the oxide is iron oxide.

[0041] Weigh each raw material component according to the following weight percentage content: PBT 22.5%, ABS 22.5%, compound flame retardant 20%, antimony trioxide 4%, glass fiber 20%, toughening agent 10%, antioxidant 0.1%, oxide 0.9%. Put the weighed raw materials into a high-mixer, mix for 2 minutes, discharge, and then extrude and granulate with a twin-screw extruder; the processing temperature of the twin-screw extruder is 230-240°C. The machine includes nine temperature zones, one of which is ...

Embodiment 2

[0042] Preparation of Example 2 PBT / ABS Alloy Material (2)

[0043] The intrinsic viscosity of PBT is 0.8 dL / g. The composite flame retardant is composed of 50% by weight of BPS, 25% of magnesium hypophosphite and 25% of talcum powder. The surface of glass fiber is treated with silane coupling agent. Alkali-free glass fiber, the toughening agent is ethylene-methyl acrylate-glycidyl methacrylate random terpolymer, the antioxidant is antioxidant 1010, and the oxide is iron oxide.

[0044] Weigh each raw material component according to the following weight percentage content: PBT 41%, ABS 23%, compound flame retardant 6%, antimony trioxide 3%, glass fiber 20%, toughening agent 5%, antioxidant 1%, oxide 1%. Put the weighed raw materials into a high-mixer, mix for 5 minutes, discharge, and then extrude and granulate with a twin-screw extruder; the processing temperature of the twin-screw extruder is 230-240°C. The machine includes nine temperature zones, one of which is 230°C f...

Embodiment 3

[0045] Example 3 Preparation of PBT / ABS Alloy Material (3)

[0046] The intrinsic viscosity of PBT is 1 dL / g. The composite flame retardant is composed of 50% by weight of BPS, 25% of magnesium hypophosphite and 25% of talcum powder. The toughening agent is ethylene-methyl acrylate binary Copolymer, the antioxidant is antioxidant 1330, and the oxide is alumina.

[0047] The raw material components were weighed according to the following weight percentages: PBT 23%, ABS 23%, compound flame retardant 6%, antimony trioxide 15%, glass fiber 30%, toughening agent 2%, antioxidant 0.9%, oxide 0.1%. Put the weighed raw materials into a high-mixer, mix for 3 minutes, discharge, and then extrude and granulate with a twin-screw extruder; the processing temperature of the twin-screw extruder is 230-240° C. The machine includes nine temperature zones, one of which is 230°C for the first stage, 230°C for the second stage, 235°C for the third stage, 235°C for the fourth stage, 240°C for ...

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Abstract

The invention discloses an environment-friendly and flame-retardant glass fiber reinforced PBT (polybutylene terephthalate) / ABS (acrylonitrile butadiene styrene) alloy material with high CTI (comparative tracking index) value and high GWIT (glow-wire ignition temperature) value. The alloy material comprises the following raw components in percentage by weight: 22.5-41% of PBT, 22.5-41% of ABS, 6-20% of compound flame retardant, 3-15% of antimony trioxide, 20-30% of glass fiber, 2-10% of toughening agent, 0.1-1% of antioxidant and 0.1-1% of oxide, wherein the compound flame retardant comprises brominated polystyrene, magnesium hypophosphite and talcum powder. The invention also provides a preparation method of the alloy material. The alloy material has high GWIT value and CTI value and good flame retardant effect, is environment-friendly, has balanced overall performances and can be widely applied to such products in the field of electronics as low-voltage electronic capacitor shells, load break switches, carbon brush brackets and moulded case circuit breakers.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a high CTI value, high GWIT value environment-friendly flame-retardant glass fiber reinforced PBT / ABS alloy material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (English name Polybutylene Terephthalate, referred to as PBT) is milky white translucent to opaque, crystalline thermoplastic polyester. It has high heat resistance, toughness, fatigue resistance, self-lubrication, low friction coefficient, weather resistance, low water absorption, and maintains various physical properties (including electrical properties) in a humid environment, electrical insulation, and good formability. The disadvantage is that the notched impact strength is low and the molding shrinkage is large. Therefore, most of them are reinforced by glass fiber or modified by inorganic filling, the tensile strength and bending strength can be more than doub...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L55/02C08L25/06C08K13/06C08K9/06C08K7/14C08K3/22C08K3/32C08K3/34C08K5/13B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 郭建鹏张强
Owner SHANGHAI SUNNY
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