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Carbon fiber reinforced and environment-friendly flame-retardant PBT(polybutylene terephthalate)/PET (polyethylene terephthalate) alloy

A carbon fiber, environmentally friendly technology, applied in the field of PBT/PET alloys, can solve the problems of low heat distortion temperature, poor flame retardancy, large shrinkage rate, etc., and achieve the effects of excellent electrical properties, increased strength, and high specific strength

Inactive Publication Date: 2015-03-18
QINGDAO XINZHAN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PBT / PET alloy has disadvantages such as low heat distortion temperature, large shrinkage rate, sensitivity to notch, and poor flame retardancy, which greatly limit its application. Therefore, it is necessary to modify the alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A PBT / PET alloy reinforced by carbon fiber and environmentally friendly and flame-retardant. A compound of glycidyl ester grafted ethylene-octene copolymer (POE-g-GMA) 10%, sodium benzoate and ethylene-sodium methacrylate ionomer 1%, antioxidant 1076 and antioxidant 168 %, 2-hydroxy-4-methoxybenzophenone 0.5%, calcium stearate 1.5%. Wherein, the PBT is polybutylene terephthalate, and its characteristic viscosity is 0.7-1.1 dL / g; the PET is polyethylene terephthalate, and its characteristic viscosity is 0.7-1.1 dL / g; the carbon fiber is a carbon fiber whose surface has been oxidized, and the specific method is to mix and prepare 70wt% nitric acid, 20wt% potassium permanganate and 10wt% hydrogen peroxide, and add water to adjust the concentration to 50%-60% solution, and then heated to 60°C to 90°C, and then added carbon fiber for soaking treatment, at a reaction temperature of 40°C to 90°C, soaked for 30 to 60 minutes, then rinsed with water and dried; the compound type...

Embodiment 2

[0026] A carbon fiber-reinforced and environmentally friendly flame-retardant PBT / PET alloy, the composition of which is: PBT 33%, PET 33%, carbon fiber 15%, compound halogen-free flame retardant 10%, methacrylic acid Glycidyl ester grafted ethylene-octene copolymer (POE-g-GMA) 5%, the compound of sodium benzoate and ethylene-sodium methacrylate ionomer 1%, antioxidant 1076 and antioxidant 168 Compound 1%, 2-hydroxy-4-methoxybenzophenone 0.5%, ethylene bis stearamide (EBS) 1.5%. Wherein, the PBT is polybutylene terephthalate, and its characteristic viscosity is 0.7-1.1 dL / g; the PET is polyethylene terephthalate, and its characteristic viscosity is 0.7-1.1 dL / g; the carbon fiber is a carbon fiber whose surface has been oxidized. The specific method is to mix and prepare 70wt% nitric acid, 20wt% potassium permanganate and 10wt% hydrogen peroxide, and add water to adjust the concentration to 50% to 60%. solution, and then heated to 60°C to 90°C, and then added carbon fiber for ...

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PUM

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Abstract

The invention discloses a carbon fiber reinforced and environment-friendly flame-retardant PBT(polybutylene terephthalate) / PET (polyethylene terephthalate) alloy comprising the following components in percentage by mass: 20-50% of PBT, 20-50% of PET, 10-25% of carbon fibers, 10-20% of a compound halogen-free flame retardant, 5-15% of a toughening agent, 0.1-1% of a composite nucleating agent, 0.1-1% of an antioxidant, 0.1-1% of a stabilizing agent and 0.1-2% of a lubricating agent. The carbon fiber reinforced and environment-friendly flame-retardant PBT / PET alloy disclosed by the invention has the beneficial effects that according to the prepared PBT / PET alloy, respective advantages of PBT and PET are integrated, and properties such as the strength, rigidity, heat resistance, corrosion resistance and the like of the alloy can be significantly improved by virtue of carbon fiber enhancement so as to ensure that the PBT / PET alloy has very high specific strength and very excellent electrical performance; and meanwhile, the PBT / PET alloy is subjected to blending modification by the compound halogen-free flame retardant, so that the high efficiency, safety, low smoke, no toxicity and UL94V-0 grade flame retardant effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PBT / PET alloy reinforced by carbon fibers and environmentally friendly and flame-retardant. Background technique [0002] Polybutylene terephthalate (PBT) is a new type of engineering plastic developed rapidly in the 1970s. Its general mechanical properties are superior to polyethylene terephthalate (PET), and it has good It has excellent toughness and can be molded, but its fluidity and heat resistance are not as good as PET, and its price is higher. Since the chemical structures of PBT and PET are similar, blending the two can learn from each other and obtain a PBT / PET alloy with ideal comprehensive properties. However, the PBT / PET alloy has disadvantages such as low heat distortion temperature, large shrinkage rate, sensitivity to notch, and poor flame retardancy, which greatly limit its application. Therefore, it is necessary to modify the alloy. Contents of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L81/06C08L83/04C08K13/06C08K9/02C08K9/06C08K7/06C08K3/04C08K3/22C08K5/132
Inventor 不公告发明人
Owner QINGDAO XINZHAN PLASTIC
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