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Hot press molding device for carbon fiber enhanced polyether-ether-ketone (PEEK) composite material and technological method thereof

A polyetheretherketone and hot-press forming technology, which is applied in the field of hot-press forming devices for carbon fiber reinforced polyether ether ketone composite plates, can solve the problems of insufficient resin-impregnated fibers, insufficient sample performance, and long molding cycle to achieve temperature rise The effect of time reduction, excellent mechanical properties and thermal stability, and work efficiency improvement

Active Publication Date: 2016-05-04
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a carbon fiber reinforced polyether ether ketone composite material hot press molding device and its process method, in order to solve the problems existing in the prior art, and realize the high melting point ( 400℃) high-viscosity polyetheretherketone resin, which solves the problems of large internal porosity, insufficient resin impregnated fibers, insufficient sample performance, and long molding cycle during the production process.

Method used

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  • Hot press molding device for carbon fiber enhanced polyether-ether-ketone (PEEK) composite material and technological method thereof
  • Hot press molding device for carbon fiber enhanced polyether-ether-ketone (PEEK) composite material and technological method thereof
  • Hot press molding device for carbon fiber enhanced polyether-ether-ketone (PEEK) composite material and technological method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0051] The prepreg is made of pretreated fiber cloth, polyether ether ketone and PTFE mixed powder through electrostatic powder spraying process, and the resin volume content reaches about 50%. After cleaning the mold 100 and applying a high-temperature release agent, put 6 pieces of square prepreg 11 with an area of ​​140mmX140mm into the detachable lower die 105; Start vacuuming in a tight state, so that the absolute vacuum degree in the vacuum cover 7, 8, and 10 reaches below 1KPa; raise the temperature of the mold 10 to 390°C, and the hydraulic press drives the upper punch 104 to move down, and the pre-press in the lower die 105 Apply a pressure of 20 tons to the dipping material and keep it warm for 15 minutes; stop heating and vacuuming, cool to 100°C at a cooling rate of 5°C / min, take out the product, and complete the molding.

Embodiment 2

[0053] The prepreg is made of pretreated fiber cloth, polyether ether ketone and PTFE mixed powder through electrostatic powder spraying process, and the resin volume content reaches about 55%. After cleaning the mold 100 and applying a high-temperature release agent, put 7 pieces of square prepregs 11 with an area of ​​140mmX140mm into the detachable lower die 105; Start vacuuming in a tight state, so that the absolute vacuum in the vacuum covers 7, 8, and 10 reaches below 1KPa; the temperature of the mold 10 is raised to 400°C, and the hydraulic press drives the upper punch 104 to move down, and the pre-press in the lower die 105 Apply a pressure of 25 tons to the dipping material and keep it warm for 25 minutes; stop heating and vacuuming, cool to 100°C at a cooling rate of 10°C / min, take out the product, and complete the molding.

Embodiment 3

[0055] The pretreated fiber cloth, polyether ether ketone and PTFE mixed powder are made into prepreg through electrostatic powder spraying process, and the resin volume content reaches about 60%. After cleaning the mold 100 and applying a high-temperature release agent, put 8 pieces of square prepregs 11 with an area of ​​140mmX140mm into the detachable lower die 105; Start vacuuming in a tight state, so that the absolute vacuum degree in the vacuum cover 7, 8, and 10 reaches below 1KPa; raise the temperature of the mold 10 to 410°C, and the hydraulic press drives the upper punch 104 to move down, and the pre-press in the lower die 105 Apply a pressure of 30 tons to the impregnated material and keep it warm for 30 minutes; stop heating and vacuuming, cool to 100°C at a cooling rate of 15°C / min, take out the product, and complete the molding.

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Abstract

The invention provides a hot press molding device for a carbon fiber enhanced polyether-ether-ketone (PEEK) composite board. The hot press molding device comprises a hydraulic machine, a molding die and a vacuum system. According to the device, a heating unit is separated from the hydraulic machine, and a heating pipe is used for heating the die to achieve a high temperature hot pressing function; by carrying out hot press molding in a vacuum environment, the content of bubbles in resin can be greatly reduced, and the test piece surface smoothness and workpiece performances are improved; a cooling unit is arranged in the die, and cooling speed is regulated by regulating the flow and temperature of high pressure cold air, so as to control the crystallinity of matrix resin and realize flexible selection between high strength and high toughness. Correspondingly, the invention also provides a hot press molding method for the carbon fiber enhanced polyether-ether-ketone (PEEK) composite board. A carbon fiber enhanced polyether-ether-ketone (PEEK) composite board produced by adopting the device and the method disclosed by the invention through hot press molding is simple in production equipment and solves the problems that material internal porosity is large, resin impregnation fiber is insufficient, test piece performance is insufficient, molding cycle is long and the like during production of polyether-ether-ketone resin with high melting point and high viscosity.

Description

technical field [0001] The invention belongs to the field of composite material processing equipment, and in particular relates to a carbon fiber-reinforced polyetheretherketone composite plate hot-press forming device and a process method thereof. Background technique [0002] Polyether ether ketone (PEEK for short) is a linear aromatic semi-crystalline thermoplastic containing chain segments in the main molecular chain. PEEK has high temperature resistance, solvent resistance, aging resistance, hydrolysis resistance, radiation resistance, good flame retardancy, high specific strength and specific modulus, and can provide excellent comprehensive performance in a wide temperature range and extreme conditions. It is the world's It is recognized as one of the best performing thermoplastics in the world. [0003] Thermocompression forming is an important process method for the production of advanced resin-based composite parts of the main load-bearing structure in the aerospac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/52B29C43/56B29C43/04
CPCB29C43/04B29C43/52B29C43/56B29C2043/561
Inventor 黄志高周华民张云郑兵高西萍张逸侯斌魁
Owner HUAZHONG UNIV OF SCI & TECH
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