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Preparation method of continuous carbon fiber reinforced composite with improved water erosion resistance

A reinforced composite material and carbon fiber technology, which is applied in the field of improving the water erosion resistance of continuous carbon fiber reinforced composite materials, can solve the problems such as the difficulty in the wide application of composite materials, and achieve strong water erosion resistance, simple preparation process, and cost advantages. Effect

Inactive Publication Date: 2013-08-14
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the thermoplastic resin matrix selected in the above research is a xaphthalene biphenyl polyarylether resin that has not yet been mass-produced, which brings certain difficulties to the wide application of this type of composite material.

Method used

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  • Preparation method of continuous carbon fiber reinforced composite with improved water erosion resistance
  • Preparation method of continuous carbon fiber reinforced composite with improved water erosion resistance
  • Preparation method of continuous carbon fiber reinforced composite with improved water erosion resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Dissolve 1 mass part of polyethersulfone (PES) in a mixed solvent of 40 mass parts N,N dimethylacetamide (DMAc) and acetone to fully dissolve the prepared solution, wherein the mass ratio of DMAc to acetone is 1:1 . Add 0.25 parts by mass of polyphenylene sulfide powder to the PES-DMAc solution, mechanically stir at a low stirring rate for 1 hour, impregnate the prepreg made of continuous carbon fiber, and the processing window of hot pressing molding is as follows:

[0023] Cold pressing: 10MPa / room temperature / 60Min+hot pressing: 15MPa / 225°C / 60Min+15MPa / 320°C / 60Min+cooling: 80°C / water cooling+pressure relief and demoulding. The continuous carbon fiber reinforced PPS / PES composite material prepared by the above process has better comprehensive mechanical properties and excellent resistance to moisture erosion, and can ensure the structural integrity and safety of the composite material during use. Please see attached table 1 for specific performance test values.

Embodiment 2

[0025] Dissolve 1.5 parts by mass of polyethersulfone (PES) in a mixed solvent of 45 parts by mass of N,N dimethylacetamide (DMAc) and acetone to fully dissolve the prepared solution, wherein the mass ratio of DMAc to acetone is 1.5:1 . Add 0.5 parts by mass of polyphenylene sulfide powder to the PES-DMAc solution, mechanically stir at a low stirring rate for 1 hour, impregnate the prepreg made of continuous carbon fiber, and prepare continuous carbon fiber according to the above technical scheme and process flow Reinforced PPS / PES unidirectional continuous carbon fiber composite. The processing window of thermoforming is as follows:

[0026] Cold pressing: 9MPa / room temperature / 50Min+hot pressing: 14MPa / 205°C / 50Min+14MPa / 310°C / 50Min+cooling: 80°C / water cooling+pressure relief and demoulding. The continuous carbon fiber reinforced PPS / PES composite material prepared by the above process has better comprehensive mechanical properties and excellent resistance to moisture erosi...

Embodiment 3

[0028] Dissolve 2 parts by mass of polyethersulfone (PES) in a mixed solvent of 50 parts by mass of N,N dimethylacetamide (DMAc) and acetone to fully dissolve the prepared solution, wherein the mass ratio of DMAc to acetone is 1.5:1 . Add 0.75 parts by mass of polyphenylene sulfide powder into the PES-DMAc solution, mechanically stir at a low stirring rate for 1.25h, impregnate the prepreg made of continuous carbon fiber, and prepare the continuous carbon fiber according to the above technical scheme and process flow Carbon fiber reinforced PPS / PES unidirectional continuous carbon fiber composite material. The processing window of thermoforming is as follows:

[0029] Cold pressing: 8MPa / room temperature / 45Min+hot pressing: 13MPa / 200°C / 45Min+13MPa / 300°C / 45Min+cooling: 80°C / water cooling+pressure relief and demoulding. The continuous carbon fiber reinforced PPS / PES composite material prepared by the above process has better comprehensive mechanical properties and excellent re...

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Abstract

The invention relates to a preparation method of a continuous carbon fiber reinforced composite with improved water erosion resistance. The preparation method comprises the following steps: 1, dissolving 1-5 parts by mass of a polyethersulfone into 40-60 parts by mass of a mixed solvent of N,N-dimethylacetamide and acetone, and fully dissolving it to obtain a solution, wherein the mass ratio of N,N-dimethylacetamide and acetone is 1-3:1; 2, adding 0.25-1.5 parts by mass of polyphenylene sulfide powder to the solution, and carrying out low speed mechanical stirring for 1-2h to obtain a suspension with stable performances; 3, dipping a continuous carbon fiber in the suspension at 18-22DEG C to obtain a semi-finished product; and 4, carrying out hot press molding on the semi-finished productto prepare a functional material with good water erosion resistance. The preparation method of the invention has the advantage of suitableness of the large scale production of the continuous carbon fiber reinforced composite with improved water erosion resistance.

Description

technical field [0001] The invention belongs to a preparation method for improving the moisture erosion resistance of continuous carbon fiber reinforced composite materials. Background technique [0002] Continuous carbon fiber reinforced thermoplastic resin-based functional materials have excellent electrical properties, flame retardancy and impact toughness, short production cycle, high production efficiency, repeatable molding and good environmental interface, compared with traditional continuous carbon fiber reinforced thermosetting resin-based composite materials , has obvious advantages in toughness and elongation at break. In view of the defects of poor mechanical properties of short-fiber and medium-long fiber reinforced thermoplastic composites, continuous carbon fiber reinforced high-performance thermoplastic resin composites can also be used in environments with high requirements for comprehensive mechanical properties and harsh service conditions. In the applica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/04C08L81/06C08K7/06B29C70/40B29C70/54
Inventor 李开喜王健
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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