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Carbon fiber-reinforced PBT and PET alloy

A carbon fiber and alloy technology, applied in the field of carbon fiber reinforced PBT and PET alloys, can solve problems such as little research, and achieve the effects of good environmental stress resistance, high toughness, and high heat resistance.

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

Carbon fiber reinforced PBT and PET alloys have very high specific strength, and there is little research on them at home and abroad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A carbon fiber-reinforced PBT and PET alloy, the components of which are: PBT 40%, PET 33%, carbon fiber 15%, NBR-g-MAH 8%, pyromellitic anhydride (PMDA) 0.4%, 1% stone talc, 1% carbodiimide, 0.6% compound of antioxidant 1076 and antioxidant 168, 1% other additives. Wherein, the carbon fiber is a carbon fiber whose surface has been modified by polyacrylonitrile. Specifically, the carbon fiber is soaked in a polyacrylonitrile solution, and then the soaked carbon fiber is pre-oxidized in an oven at 50°C to 300°C for 0.1- 100 hours and drying to obtain surface-modified carbon fibers; wherein, the polyacrylonitrile solution is a solution prepared from polyacrylonitrile oligomers and acetone.

[0021] Preparation method: (1) Carbon fiber pretreatment: first prepare a polyacrylonitrile solution, then soak the carbon fiber in the polyacrylonitrile solution, then pre-oxidize the soaked carbon fiber in an oven at 50°C to 300°C for 0.1 to 100 hours, and (2) Weigh PBT and PET acc...

Embodiment 2

[0023] A carbon fiber-reinforced PBT and PET alloy, whose components are proportioned by mass percentage: PBT 40%, PET 35%, carbon fiber 10%, SEBS-g-MAH 10%, triphenyl phosphite (TPPi) 0.5%, Ethylene-sodium methacrylate ionomer 1.5%, carbodiimide 1.5%, antioxidant 1076 and antioxidant 168 compound 1%, other additives 0.5%. Wherein, the carbon fiber is a carbon fiber whose surface has been modified by polyacrylonitrile. Specifically, the carbon fiber is soaked in a polyacrylonitrile solution, and then the soaked carbon fiber is pre-oxidized in an oven at 50°C to 300°C for 0.1- and drying for 100 hours to obtain surface-modified carbon fibers; wherein, the polyacrylonitrile solution is a solution prepared from polyacrylonitrile oligomers and ethanol.

[0024] Preparation method: (1) Carbon fiber pretreatment: first prepare a polyacrylonitrile solution, then soak the carbon fiber in the polyacrylonitrile solution, then pre-oxidize the soaked carbon fiber in an oven at 50°C to 300...

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PUM

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Abstract

The invention discloses a carbon fiber-reinforced PBT and PET alloy, comprising the following components in percentage by mass: 20%-50% of PBT, 20%-50% of PET, 10%-20% of a carbon fiber, 4%-10% of a flexibilizer, 0.1%-1% of a chain extender, 0.1%-2% of a nucleating agent, 0.5%-2% of an anti-hydrolysis agent, 0.1%-1% of an antioxidant and 0-1% of other assistants. Compared with the prior art, the prepared carbon fiber-reinforced PBT and PET alloy has significant advantages of high strength, high tenacity, high heat resistance, good environmental stress resistance and the like, and can be widely applied to the industries such as chemical engineering, machinery, medical treatment, military affairs, aviation and automobile industry.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a carbon fiber reinforced PBT and PET alloy. 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 PBT and PET alloys with ideal comprehensive properties. However, PBT and PET alloys have disadvantages such as low thermal deformation temperature, large shrinkage rate, and sensitivity to notches, which greatly limit their applications. Carbon fiber has the characteristics of high strength, low density, high temperature resistance, water resistance, and co...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K9/04C08K7/06C08K3/04
Inventor 不公告发明人
Owner QINGDAO XINZHAN PLASTIC