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ECTFE and FRP composite board

A composite plate and plate technology, applied in synthetic resin layered products, layered products, glass/slag layered products, etc., can solve the problems of uneconomical structural materials, poor molding processability, poor mechanical properties, etc., and achieve excellent Effect of chemical resistance, mature molding process, low water vapour permeability

Active Publication Date: 2021-10-29
SHANGHAI YIZHI INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while ECTFE has excellent performance, it also has the disadvantages of fluorine-based materials: expensive, poor molding process, poor mechanical properties, and it is a non-polar material. It is almost impossible to bond other materials with chemical methods.
It is very uneconomical if it is simply used as a structural material used in a strong corrosive environment

Method used

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  • ECTFE and FRP composite board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 The shown ECTFE / FRP composite sheet forms a four-layer composite structural sheet of ECTFE layer (including fiber insertion layer), fiber bonding layer, FRP layer, and gel coat layer.

[0018] The implanted fiber is a polymer fiber with a melting point higher than the melting point of ECTFE. One end of the high-melting point polymer fiber is first subjected to heat shrinkage treatment by local heating higher than the respective melting point, so that the diameter of the fiber at this end becomes larger and thicker, and then inserted into the molten ECTFE surface and condensation anchored in it.

[0019] The thickness of the ECTFE sheet is 1-3mm, the thickness of the fiber insertion layer is 0.5-1mm, the thickness of the fiber bonding layer is 0.5-2mm, and the thickness of the FRP layer is 2-10mm.

Embodiment 2

[0021] An ECTFE / FRP composite board forms a three-layer composite structural board of an ECTFE layer, a fiber insertion layer, a fiber bonding layer+FRP layer.

[0022] The implanted fiber is a glass fiber with a melting point higher than the melting point of ECTFE. One end of the glass fiber is first subjected to heat-shrinkage treatment by high-temperature local heating, so that the diameter of the fiber at this end becomes larger and thicker, and then inserted into the surface of the molten ECTFE and condensed and anchored in it .

[0023] The resin matrix in the fiber bonding layer is basically the same as the matrix material of FRP.

[0024] The thickness of the ECTFE sheet is 2-3mm, the thickness of the fiber insertion layer is 0.5-1mm, and the thickness of the fiber bonding layer and the thickness of the FRP layer together form a thicker FRP layer with similar composition.

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Abstract

The invention discloses an ECTFE and FRP (Fiber Reinforced Plastic) composite board, which is characterized in that fibers are implanted into the surface of a board by adopting a hot-pressing implantation process on the surface of the ECTFE, so that the board is mechanically connected with the fibers, and the exposed part of the fibers are connected with reinforced glass fiber reinforced plastics through resin glue. The multi-layer composite structure board comprising the ECTFE layer, a fiber insertion layer, a fiber bonding layer, the FRP layer and a gel coat layer is formed. The characteristics of the two materials are integrated, and the ECTFE and FRP composite board has the excellent corrosion resistance of the ECTFE and the high-strength mechanical property of the FRP material.

Description

technical field [0001] The present invention relates to a layered composite material. Background technique [0002] In many processes in the chemical industry, the medium is highly corrosive, especially in the environment of alternating acid and alkali. Therefore, many chemical box and container equipment may not meet the service life requirements due to local corrosion or performance degradation. This increases the production cost of the enterprise, which is not conducive to the stable operation of the enterprise. [0003] ECTFE is a fluoroplastic product, which has excellent corrosion resistance, even in the environment of alternating acid and alkali; at the same time, ECTFE has extremely low water vapor permeability, and can meet the requirements of equipment with a small thickness. Corrosion resistance and anti-leakage requirements. However, while ECTFE has excellent performance, it also has the disadvantages of fluorine-based materials: expensive, poor molding proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/02B32B17/02B32B17/06B32B17/12B32B27/12B32B27/04B32B27/30B32B27/32B32B33/00
CPCB32B27/32B32B27/304B32B27/12B32B5/02B32B5/26B32B33/00B32B2260/021B32B2260/046B32B2262/101
Inventor 奚儒伟
Owner SHANGHAI YIZHI INDAL
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