Unlock instant, AI-driven research and patent intelligence for your innovation.

Pressure shock wave air removing device of resin transfer moulding technology and its method

A technology of resin transfer molding and gas device, which is applied in the field of pressure shock wave degassing device, can solve the problem of low sound power density, achieve the effects of eliminating excess gas, enhancing wettability, and removing microbubbles

Inactive Publication Date: 2006-01-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The ultrasonic frequency used in the above patented technology is 40~60kHz, the sound power is 0~400W, and the sound power density is not large

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pressure shock wave air removing device of resin transfer moulding technology and its method
  • Pressure shock wave air removing device of resin transfer moulding technology and its method
  • Pressure shock wave air removing device of resin transfer moulding technology and its method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Concrete constitution of the present invention is: as figure 2 As shown, the thin piezoelectric ceramic sheet 2 is glued on the inner surface of the lightweight housing 1, and the end cover 3 is connected with the lightweight housing 1, and the two are sealed with a gasket. Lightweight housing 1 such as image 3 As shown, on the lightweight housing 1, the installation hole of the piezoelectric ceramic sheet 2 is designed; the distance d between the bottom surface of the installation hole and the surface of the lightweight housing 1 is determined according to formula (1):

[0023] d = n f 4 c - - - ( 1 )

[0024] Where: f is the longitudinal resonance frequency of the piezoelectric ceramic sheet, c is the sound velocity in the material of the lightweight shell 1, f and c can be obtained th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A pressure shock wave apparatus for removing the air from the resin in mould used for moulding process is composed of a shock wave generator consisting of light casing, piezoelectric ceramic, end cover and electric connector, power supply and RTM mould. Its method includes such steps as using shock wave generator to generate high-pressure shock wave in mould cavity and promoting resin to flow for removing air from it.

Description

1. Technical field [0001] The pressure shock wave degassing device and method of the resin transfer molding process of the present invention belong to the degassing device and method of the RTM mold forming process. 2. Background technology [0002] With the development of the polymer matrix composites industry, the resin transfer molding (RTM) process has been more and more widely used at home and abroad. The RTM process is to inject a liquid resin system under a certain pressure into a closed mold cavity pre-laid with fiber reinforced materials, and the resin is infiltrated into the fiber reinforced materials in the mold cavity and then cured to form. Since the air is not easy to exhaust during the molding process, defects are prone to occur in composite products, thereby reducing their bending strength, tensile strength, impact strength and interlayer strength. Therefore, it is very important to improve the wettability of the resin to the fiber and reduce the porosity du...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/63B29C45/02B29C45/17B29C70/06
Inventor 汪炜刘正勋刘浏董歧
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS