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Honeycomb-structure sheet material having fiber-reinforced thermoplastic skin and preparation method thereof

A fiber-reinforced, honeycomb structure technology, applied in chemical instruments and methods, synthetic resin layered products, lamination devices, etc., can solve problems such as difficult to find defects in advance, inconvenient direct detection of interlayer quality, low mechanical properties of skin, etc. To achieve the effect that product quality can be controlled, product quality is easy to control, and the internal quality of the skin is good

Active Publication Date: 2012-05-30
LIAONING LIAOJIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, honeycomb sandwich composite materials have low skin strength, such as relatively low strength of thermoplastic skin compared with thermosetting skin, while thermosetting skin has poor toughness and poor impact resistance, which affects its application range
At the same time, when using glue to bond the skin and core material, the thickness of the glue is not easy to grasp, and the glue in the place where the glue is too thick is easy to enter the honeycomb core material, which also affects the performance of the honeycomb sandwich composite material
In terms of molding method, the one-time molding time is shorter, but limited by the compressive strength of the honeycomb core, the mechanical properties of the molded skin are low, the internal quality of the interlayer is inconvenient to directly detect, and it is difficult to find defects in advance; the secondary molding quality is easy to control , but the production time is relatively long; three-time molding, product quality is easy to control, but the production process is complicated and the production cycle is long

Method used

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  • Honeycomb-structure sheet material having fiber-reinforced thermoplastic skin and preparation method thereof
  • Honeycomb-structure sheet material having fiber-reinforced thermoplastic skin and preparation method thereof
  • Honeycomb-structure sheet material having fiber-reinforced thermoplastic skin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] ① Lay 4 layers of continuous glass fiber reinforced polypropylene prepreg tape criss-cross, put it into the mold, wait until the temperature reaches 180°C, put it into a hot press, press 0.2MPa, and hold for 20min. After the heat preservation is over, it is sent to a cold press with a pressure of 2 MPa and a pressure hold of 20 minutes. The mold is released to produce a continuous glass fiber reinforced polypropylene skin.

[0032] ② Lay the above-mentioned continuous glass fiber reinforced polypropylene skin, epoxy film, PP honeycomb core, epoxy film, and continuous glass fiber reinforced polypropylene skin of the same area on the front end of the hot pressing roller in sequence, and wait until the temperature reaches 40°C , according to the thickness of the plate, adjust the height of the transfer table and the hot pressing roller, the speed of the transfer table is 2m / min, and send it into the hot pressing roller. After 60s, the sheet comes out from the other side of...

Embodiment 2

[0034] ① Lay 3 layers of continuous carbon fiber reinforced polyvinyl chloride prepreg tape in a crosswise and criss-cross pattern, put it into the mold, wait for the temperature to reach 160°C, and put it into a hot press with a pressure of 0.3 MPa and a holding time of 24 minutes. After the heat preservation is over, it is sent to a cold press with a pressure of 3 MPa and a pressure hold of 30 minutes. The mold is released to produce a continuous carbon fiber reinforced PVC skin.

[0035] ② Lay the above-mentioned continuous carbon fiber reinforced PVC skin, epoxy film, PE honeycomb core, epoxy film, and continuous carbon fiber reinforced PVC skin of the same area on the front end of the hot pressing roller in turn, and wait until the temperature reaches 40°C. Adjust the height of the transfer table and the hot press roller, the speed of the transfer table is 3m / min, and send it into the hot press roller. After 50s, the plate comes out from the other side of the hot press ro...

Embodiment 3

[0037] ① Lay 2 layers of continuous aramid fiber-reinforced PBT prepreg tape criss-cross, put it into the mold, wait for the temperature to reach 228°C, put it into a hot press with a pressure of 0.4MPa, and hold for 30 minutes. After the heat preservation is over, it is sent to a cold press with a pressure of 4 MPa and a pressure hold of 35 minutes. The mold is released to make continuous aramid fiber reinforced PBT skin.

[0038]② Lay the above-mentioned continuous aramid fiber reinforced PBT skin, acrylic film, PVC honeycomb core, acrylic film, and continuous aramid fiber reinforced PBT skin of the same area on the front of the hot pressing roller in sequence. Adjust the height of the transfer table and the heat press roller for the thickness of the plate. The speed of the transfer table is 4m / min, and it is sent into the heat press roller. After 40s, the plate comes out from the other side of the heat press roller, and the two-way continuous aramid fiber reinforced PBT ski...

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Abstract

The invention discloses a honeycomb-structure sheet material having a fiber-reinforced thermoplastic skin, characterized in that the honeycomb-structure sheet material comprises fiber-reinforced thermoplastic skins, a film, and a thermoplastic honeycomb core, wherein the thermoplastic honeycomb core is arranged between two fiber-reinforced thermoplastic skins and is bonded with the skins though the film. According to the invention, by using bidirectional continuous fibers to reinforce the thermoplastic composite material skins, the advantages of high strength and good toughness are achieved; simultaneously, by using the film to bond, the amount of glues is easy to control, and the phenomenon that liquid enters in honeycomb holes when using liquid glues to bond is not easy to happen; and by using a hot-press roller secondary forming method, the advantages of simple processing devices, easy control of product quality, high production efficiency, easy realization, and convenient popularization are achieved.

Description

technical field [0001] The invention relates to a honeycomb structure board, in particular to a honeycomb structure board with a fiber reinforced thermoplastic skin, and a preparation method thereof. Background technique [0002] The honeycomb sandwich structure composite material is composed of two high-strength upper and lower skins and a sandwich structure filled in it. The upper and lower skins and the core are bonded by an adhesive to form an integral rigid structure, or the core is obtained by direct injection or molding. structure. When the sandwich panel is subjected to a bending load, the upper skin is stretched, the lower skin is compressed, and the core transmits the shear force. From a mechanical point of view, it is very similar to the I-beam. The face plate is equivalent to the flange of the I-beam, and the core material is equivalent to the web of the I-beam. The difference is that the core material and the face plate are not the same material. are dispersed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/12B32B27/08B32B27/12B32B7/12B32B37/06B32B37/10
Inventor 高野
Owner LIAONING LIAOJIE SCI & TECH
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