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Carbon fiber reinforced resin board with polytetrafluoroethylene film on the surface and its preparation method

A polytetrafluoroethylene and reinforced resin technology, applied in the field of carbon fiber reinforced resin sheets, can solve the problems of the degradation of the resin matrix and the fiber-resin interface, the safety performance of the reinforced structure, and the long-term deterioration of the board, and achieve excellent hydrophobicity. and UV resistance, promoting wide and reliable application, and improving long-term durability

Active Publication Date: 2016-01-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the complex service environment of civil engineering structures (such as water immersion, humidity, temperature changes, etc.), the service time is required to be long (such as generally requiring more than 50 years), and the carbon fiber reinforced resin board can absorb moisture in the environment, resulting in resin matrix and The fiber-resin interface will degrade, and the long-term performance will deteriorate accordingly; at the same time, under the action of sunlight, the resin on the surface of the carbon fiber reinforced resin plate may be degraded, which may also lead to long-term deterioration of the plate
The degradation of the performance of the plate will inevitably affect the safety performance of the reinforced structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The utility model relates to a carbon fiber reinforced resin plate whose surface layer is polytetrafluoroethylene film, and the upper and lower surfaces of the carbon fiber reinforced resin plate are bonded with polytetrafluoroethylene film. The thickness of the polytetrafluoroethylene film is 0.01-0.1 mm, and the surface in contact with the carbon fiber reinforced resin plate needs to be treated with sodium. The carbon fiber used in the carbon fiber reinforced resin board is a continuous 3-48k carbon fiber bundle, and the resin system is an epoxy resin system, an unsaturated polyester system, a vinyl ester system or a polyurethane system; the thickness of the carbon fiber reinforced resin board is 0.8-5 mm, width 10-200 mm, carbon fiber volume content 55%-71%.

[0015] The preparation method of surface bonded polytetrafluoroethylene film carbon fiber reinforced resin plate, the steps are as follows:

[0016] 1) Choose a single-sided sodium-treated PTFE film with a thi...

Embodiment 2

[0020] The surface of the present embodiment is bonded with the preparation method of polytetrafluoroethylene film carbon fiber reinforced resin plate, and the steps are as follows:

[0021] 1) Select the continuous polytetrafluoroethylene film with single-side sodium treatment produced by Yangzhong Yangcheng Electric Plastic Co., Ltd., with a thickness of 0.02 mm and a width of 100 mm. 12k Formosa Plastics’ continuous carbon fiber bundle (T36S) is selected as the carbon fiber reinforced resin The reinforcing fiber of the board, the resin system is ordinary bisphenol A epoxy resin E51, the curing agent is methyl hexahydrophthalic anhydride, the ratio of epoxy resin to curing agent is 100:80 and 1-2% catalyst DMP30;

[0022] 2) Pultruding by pultrusion machine: the pultrusion machine includes a creel, an impregnation tank, a flat high-temperature die, a post-curing furnace and a pulling device. The fiber roller is fixed on the creel; the resin is placed in the dipping tank, and ...

Embodiment 3

[0024] The surface of the present embodiment is bonded with the preparation method of polytetrafluoroethylene film carbon fiber reinforced resin plate, and the steps are as follows:

[0025] 1) Select continuous polytetrafluoroethylene film with single-sided sodium treatment produced by Yangzhong Yangcheng Electric Plastic Co., Ltd., with a thickness of 0.1 mm and a width of 100 mm. 12k Formosa Plastics’ continuous carbon fiber bundle (T36S) is selected as the carbon fiber reinforced resin The reinforcing fiber of the board, the resin system is ordinary bisphenol A epoxy resin E51, the curing agent is methyl hexahydrophthalic anhydride, the mass ratio of epoxy resin and curing agent is 100:80 and the mass percentage is 1-2 % Catalyst DMP30;

[0026] 2) Pultruding by pultrusion machine: the pultrusion machine includes a creel, an impregnation tank, a flat high-temperature die, a post-curing furnace and a pulling device. The fiber roller is fixed on the creel; the resin is place...

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PUM

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Abstract

The invention provides a carbon fiber reinforced resin board with polytetrafluoroethylene thin films as the surface layers and a manufacturing method of the carbon fiber reinforced resin board. The upper and lower surfaces of the carbon fiber reinforced resin board are adhered with polytetrafluoroethylene thin films. The manufacturing method comprises the following steps: fiber bundles pass through a resin impregnation groove; the impregnated carbon fiber bundles pass through a preformed mold; the preformed fiber bundles and upper and lower layers of polytetrafluoroethylene thin films simultaneously enter a high-temperature board type mold, wherein resin is cured and formed after passing through the high-temperature mold; the cured resin passes through a high-temperature post-curing furnace, so that the resin can be completely cured, and the carbon fiber reinforced resin board with polytetrafluoroethylene thin films as the surface layers is formed. The polytetrafluoroethylene thin films are glued on the surface layers of the carbon fiber reinforced resin board, so that the carbon fiber reinforced resin board can be protected from various contaminations, the influence on the carbon fiber reinforced resin board caused by harsh environment such as ultraviolet irradiation and water vapor can be prevented or alleviated and the long-term durability of the board is improved.

Description

technical field [0001] The invention relates to a carbon fiber reinforced resin board whose surface layer is a polytetrafluoroethylene film and a preparation method thereof. Background technique [0002] Carbon fiber-reinforced resin-based composite panels have excellent properties such as light weight, high strength, and corrosion resistance. In recent years, they have been widely used in the reinforcement and repair of civil engineering structures. ; Use structural adhesives to paste carbon fiber reinforced resin plates to the surface of steel structures, and perform fatigue reinforcement or bearing capacity reinforcement on steel structures. [0003] In the above-mentioned structural reinforcement technology, the bonding performance between the carbon fiber reinforced resin plate and the structure and its long-term durability are the key points of this technology. Only reliable bonding can ensure that the structural bearing capacity can be effectively transferred to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/04B32B27/08B32B27/30B29D7/01
Inventor 咸贵军洪斌
Owner HARBIN INST OF TECH