Quick RTM manufacturing process of resin based advanced composite material

An advanced composite material and manufacturing process technology, applied in the field of rapid RTM manufacturing process, can solve the problems of high energy consumption and slow heating speed, and achieve the effect of less energy consumption, reducing residual stress and optimizing the curing process

Inactive Publication Date: 2006-07-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Slow heating speed and high energy consumption

Method used

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  • Quick RTM manufacturing process of resin based advanced composite material
  • Quick RTM manufacturing process of resin based advanced composite material
  • Quick RTM manufacturing process of resin based advanced composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0040] In CAD / CAM software, carry out the three-dimensional modeling of the part prototype. And use RP (rapid prototyping) technology to make the corresponding prototype. Then remake the corresponding room temperature vulcanized silicone rubber mold. Apply silicone oil on the inner surface of the mold as a release agent. Place the carbon fiber three-dimensional prefabricated part in the mold, close the mold, and seal it. The mold is clamped on the trolley in the high-pressure water tank to fix the trolley. Connect the resin gate and riser of the mold to the resin injection pipe and the exhaust pipe of the high-pressure water tank respectively. Close the high-pressure water tank, fill it with degassed water, and adjust the water pressure to 1.5 atmospheres (assuming that the outside world is 1 atmosphere at this time).

[0041] Mix the epoxy resin with the anhydride curing agent (mass ratio: 10:7), and put it into a closed container, occupying half the volume of the contain...

Embodiment approach 2

[0045] In CAD / CAM software, carry out the three-dimensional modeling of the part prototype. And use RP (rapid prototyping) technology to make the corresponding prototype. Then remake the corresponding room temperature vulcanized silicone rubber mold. Apply silicone oil on the inner surface of the mold as a release agent. Place the carbon fiber three-dimensional prefabricated part in the mold, close the mold, and seal it. The mold is clamped on the trolley in the high-pressure water tank to fix the trolley. Connect the resin gate and riser of the mold to the resin injection pipe and the exhaust pipe of the high-pressure water tank respectively. Close the high-pressure water tank, fill it with degassed water, and adjust the water pressure to 1.5 atmospheres (assuming that the outside world is 1 atmosphere at this time).

[0046] Mix the epoxy resin with the modified amine curing agent (mass ratio is 4:1), and put it into an airtight container, occupying half the volume of the ...

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Abstract

The invention relates to a quick RTM producing method of resin-group advanced composite material, belonging to the composite material producing technique. It comprises following steps: a, using CAD/CAM software and RP technique to prepare needed master mold; b, using said master mold to copy relative room-temperature sulfuration silicon rubber mould; c, plating releasing agent on the inner surface of mould; d, arranging fiber prefabricated element inside the mould, closing mould and sealing; e, using resin to remove gas; f arranging the mould in high-pressure water pot; g, closing high-pressure water pot and filling the water without gas; h, filling resin into mould via high-pressure; I, operating the high-energy focused ultrasonic device to heat and solidify; j, closing the ultrasonic after solidification; k, discharging the water without gas and open the high-pressure water pot; l, removing the mould outside high-pressure water pot and attaining the composite material element from mould; m, cleaning and detecting said element. The inventive method can quickly attain mould, and quickly solidify resin with lower energy consumption, high producing efficiency and high-quality product.

Description

1. Technical field [0001] The present invention relates to a rapid RTM manufacturing process for resin-based advanced composite materials. The difference from the general RTM process is that it uses silicone rubber as the mold material, uses RP (rapid prototyping) technology and silicone rubber mold technology to quickly manufacture RTM molds, and adopts high-energy focused ultrasound-high-pressure water tank curing process for rapid curing. It belongs to the field of composite material manufacturing technology. 2. Background technology [0002] Resin-based advanced composite materials reinforced with high-performance glass fibers, carbon fibers, and aramid fibers have a series of advantages such as high specific strength, high specific stiffness, material designability, fatigue resistance, and wear resistance, but there are also high raw material costs. , The disadvantage of complex preparation process. High manufacturing costs are the main reason why advanced composite m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/48B29C70/54
Inventor 刘浏汪炜刘正埙
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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