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Preparation method of thermoplastic resin/fiber composite material

A fiber composite material and thermoplastic resin technology, which is applied in the field of polymer composite materials to achieve the effect of saving energy

Active Publication Date: 2018-08-31
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, there are no relevant reports about plastics being processed by vibration at low frequencies in a highly elastic state (above the glass transition temperature and below the melting point).

Method used

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  • Preparation method of thermoplastic resin/fiber composite material
  • Preparation method of thermoplastic resin/fiber composite material
  • Preparation method of thermoplastic resin/fiber composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation of embodiment 1 linear low density polyethylene / UHMWPE fiber blend

[0027] The LLDPE / UHMWPE fibers (80:20) were blended on a torque rheometer at a temperature of 135° C., the mixing shear rate of the torque rheometer was 50 rpm, and mixed for 10 minutes to obtain a blended composite material. The above composite material was pre-compressed for 5 minutes and then pressed for 5 minutes under the conditions of 140° C. and 10 MPa with a vacuum laminator to obtain a disc with a diameter of 55 mm and a thickness of 1.05 mm. Use the discs prepared above at 125°C (at this temperature, the material is in a highly elastic state) and at 150°C (at this temperature, the material is in a molten state) figure 1 Vibration is applied by the automatic vibration device shown, the vibration time is 1 min, and the vibration frequency is 100 rad / min, respectively.

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Abstract

The invention belongs to the field of polymer composites, and particularly relates to a preparation method of thermoplastic resin / fiber composites. According to the preparation method of the thermoplastic resin / fiber composites, the thermoplastic resin and fibers are mixed together to prepare the thermoplastic resin / fiber composites; and a vibration external field with the frequency being 20-100 rad / min is exerted to the obtained composites at the temperature corresponding to the elastomeric state of the composites for 1-30 min, wherein the temperature corresponding to the elastomeric state is above the glass transition temperature and below a melting point. According to the method, low-frequency vibration is exerted to polymer in an elastomeric state, operation is simple and easy to conduct, the method can change the aggregative state structure of the composites, and therefore the comprehensive performance of the composites is improved.

Description

Technical field: [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a preparation method of a thermoplastic resin / fiber composite material. Background technique: [0002] The processing technology of thermoplastic resin generally includes injection molding, extrusion, blow molding, spinning and other processes. During these processing processes, the polymer chain is subjected to strong external field effects (such as shear field, temperature field, stretching, vibration, etc.); These external field effects have a strong impact on the conformation, position, arrangement and distribution of the molecular chains of the molten polymer, which further affects the aggregated structure of the polymer and ultimately determines the macroscopic properties of the product. Obviously, the parameter optimization design of the external field is crucial to improve the product performance of crystalline polymers. [0003] Polymer melt vibra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B7/28B29B7/72
CPCB29B7/28B29B7/72
Inventor 杨其高雪芹
Owner SICHUAN UNIV
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