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Modified PTT/carbon fiber composite material and preparation method therefor

A composite material and carbon fiber technology, which is applied in the field of modified PTT/carbon fiber composite materials and its preparation, can solve the problems of low notched impact strength, limit the application of PTT, and large notch sensitivity, and achieve high specific modulus and small thermal expansion coefficient , Good processing effect

Inactive Publication Date: 2015-08-26
QINGDAO XINZHAN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unmodified PTT has the defects of low notched impact strength, high notch sensitivity, poor heat resistance, and poor flame retardancy, which greatly limit the wider application of PTT in various fields.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A modified PTT / carbon fiber composite material, its components are proportioned by mass percentage: PTT 60%, carbon fiber 15%, EVA 10%, 2-hydroxy-4-methoxybenzophenone 2%, antioxidant agent 1010 0.3%, calcium stearate 0.7%, decabromodiphenylethane 12%, the PTT is polytrimethylene terephthalate with an intrinsic viscosity of 0.7-1.5dL / g, and the carbon fiber is made of titanic acid on the surface The polyacrylonitrile-based carbon fiber is modified by an ester coupling agent, has an average diameter of 3-30 μm, an average length of 100-750 μm, and an aspect ratio of 10-100. The EVA is an ethylene-vinyl acetate copolymer.

[0021] Preparation method: (1), put PTT in a forced air circulation oven and dry at 110°C-120°C for 6-8 hours, and set aside for use; (2), carbon fiber surface modification treatment: the average diameter is 3-30μm , The polyacrylonitrile-based carbon fiber with an average length of 100-750 μm and an aspect ratio of 10-100 is placed in a (mass) 60%-70%...

Embodiment 2

[0023] A modified PTT / carbon fiber composite material, its components are proportioned by mass percentage: PTT 77%, carbon fiber 8%, EVA 5%, 2-hydroxy-4-n-octyloxybenzophenone 1.5%, anti- The compound of oxygen agent 1076 and antioxidant 168 is 0.1%, pentaerythritol stearate is 0.4%, polyphenylsulfone diphenylphosphonate is 8%, and the PTT is a polyparaffin with an intrinsic viscosity of 0.7-1.5dL / g. Propylene glycol phthalate, the carbon fiber is a polyacrylonitrile-based carbon fiber whose surface is modified by a titanate coupling agent, with an average diameter of 3-30 μm, an average length of 100-750 μm, and an aspect ratio of 10-100, The EVA is ethylene-vinyl acetate copolymer.

[0024] Preparation method: (1), put PTT in a forced air circulation oven and dry at 110°C-120°C for 6-8 hours, and set aside for use; (2), carbon fiber surface modification treatment: the average diameter is 3-30μm , The polyacrylonitrile-based carbon fiber with an average length of 100-750 μm ...

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Abstract

The invention discloses a modified PTT / carbon fiber composite material and a preparation method therefor. The composite material comprises the following ingredients, by weight, 60%-80% of PTT, 8%-15% of carbon fibers, 5%-10% of EVA, 0.5%-2% of light stabilizing agents, 0.1%-0.5% of anti-oxidants, 0.1%-1% of lubricants and 6%-12% of flame retardants. The carbon fibers are polyacrylonitrile-based carbon fibers with surfaces after modification processing of titanate coupling agents, with an average diameter of 3-30 micrometers, with an average length of 100-750 micrometers and with a length / diameter ratio of 10-100. The beneficial effects are that the composite material has extremely high specific strength and specific modulus, the ageing resistance is excellent, the processability is good, chemical resistant stability is excellent, the thermal expansion coefficient is small, and the composite material is suitable for the high-strength plastic field.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a modified PTT / carbon fiber composite material and a preparation method thereof. Background technique [0002] Polytrimethylene terephthalate, referred to as PTT, is obtained by polycondensation of terephthalic acid and 1,3-propanediol. A promising new type of polyester polymer material newly developed after glycol ester (PBT). Compared with PET and PBT, PTT has many excellent characteristics such as high elasticity, good continuous printing and dyeing characteristics, anti-ultraviolet, anti-internal stress, low static electricity, good biodegradability, and recyclability. In addition, PTT has good processability, low hygroscopicity, high dimensional stability, and small change in physical properties. It has both the high performance of PET and the easy processability of PBT. Therefore, PTT has very broad application prospects in many fields such as carpet industry, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/08C08K13/06C08K7/06C08K3/04C08K5/132C08K5/03C08K5/3492
Inventor 不公告发明人
Owner QINGDAO XINZHAN PLASTIC