Aramid fiber impregnated composite material liner and preparation method thereof
A technology of composite materials and gaskets, applied in the field of gaskets, can solve the problems of easy wear and corrosion of clamps, and achieve good chemical resistance
Pending Publication Date: 2021-11-02
DALIAN CANDL TECH DEV CO LTD
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] According to the above-mentioned technical problems that the traditional clamps are easy to wear and have poor corrosion resistance, a kind of aramid fiber impregnated composite material liner between the clamp and the conduit when the clamp is used to fix the conduit and its preparation method are provided
Method used
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Embodiment 1
[0037] In this embodiment, the aramid-impregnated composite material gasket is in the shape of a long strip, and the cross-section is in the shape of a rectangular tube, which is used for assembly according to the cutting length and secondary cutting according to the use.
[0038] The specific preparation method is as follows:
[0039] S1. Parallel process: Check the appearance of PBO fiber, it should be smooth and without pilling. The PBO fiber is paralleled from one to four through the paralleling machine, and after paralleling, ensure that the surface of the fiber is free from dirt and damage.
[0040] S2. Weaving process: use a braiding machine to weave the PBO fiber filaments that have been paralleled into four into a casing with a folding diameter of 10mm and an inner diameter of 10-11mm. Composed of root fibers, the surface of the braided sleeve is free from dirt and damage.
[0041] S3. Drying process: drying the braided casing for 20 minutes at a temperature of 400°C....
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Abstract
The invention provides an aramid fiber impregnated composite material liner, and is characterized in that the liner is prepared from PBO cellosilk through the processes of doubling, weaving, drying, cutting, rubberizing and shaping, wherein a casing pipe woven by the cellosilk is cut according to a preset size, the casing pipe is soaked in a polytetrafluoroethylene resin solution in the rubberizing process, the inner surface and the outer surface of the casing pipe are fully impregnated with polytetrafluoroethylene resin, the content of the polytetrafluoroethylene resin accounts for 68-72% of the total weight of the casing pipe and the polytetrafluoroethylene resin, then the fully impregnated casing pipe is shaped in a liner mold at a certain pressure and temperature, and after finishing, the aramid fiber impregnated composite liner is obtained. The invention further provides a preparation method of the liner, and the liner can be used in various environments such as hydraulic oil, fuel oil, salt mist and damp and hot environments and has the properties of corrosion resistance, salt mist resistance, high temperature resistance, wear resistance and the like.
Description
technical field [0001] The invention relates to the technical field of gaskets, in particular to an aramid-impregnated composite material gasket used between a clip and a catheter when the clip is used to fix the catheter and a preparation method thereof. Background technique [0002] At present, when traditional clamps are used to fix conduits or cables, gaskets such as rubber, pilling cloth, metal mesh belts, and Teflon bushings are used between the clamps and conduits or cables. Products of the above materials are used There are following disadvantages: [0003] The rubber pads used in liner clips are prone to aging, cracking, and peeling. The rubber pads after aging will make the metal hoop frame directly contact with the cables or conduits, which will cause wear and tear on the cable insulation and short circuits. The vibrating part wears through the conduit. [0004] In some wiring harness systems, because the traditional clamps are exposed to the outside all the yea...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C08L27/18C08L79/04
CPCC08L27/18C08L2201/08C08L2205/16C08L79/04
Inventor 葛健郭立王伟
Owner DALIAN CANDL TECH DEV CO LTD