Production process of PTFE fiber cloth

Abstract

The invention belongs to the technical field of PTFE fiber cloth, and particularly relates to a production process of PTFE fiber cloth. An impregnation device comprises an impregnation box; a first rotating roller is rotationally connected into the inner wall of the impregnation box through a rotating shaft; the right side of the first rotating roller is rotationally connected with a first impregnation belt in the inner wall of the impregnation box through uniformly arranged rotating rods; the outer surface of one side, extending out of the first impregnation belt, of each rotating rod is fixedly connected with rotating blades which are uniformly arranged; the outer surface of the first impregnation belt is in sliding connection with uniformly-arranged spray heads. The impregnation deviceis mainly used for solving the problems that in the impregnation process of existing PTFE fiber cloth in the impregnation device, due to the fact that the concentration distribution of polytetrafluoroethylene dispersion liquid is not uniform, only the surface of the fiber cloth is usually impregnated with the polytetrafluoroethylene dispersion liquid, a coating of the polytetrafluoroethylene dispersion liquid is accumulated and thickened on the fiber cloth, and in the process, a certain impregnation effect can also be achieved, but the fiber cloth is cracked after being dried, so that the service life of the fiber cloth is shortened.

Description

technical field [0001] The invention belongs to the technical field of PTFE fiber cloth, in particular to a production process of PTFE fiber cloth. Background technique [0002] Polytetrafluoroethylene, commonly known as "Plastic King", is a polymer compound made of tetrafluoroethylene, which has excellent chemical stability, corrosion resistance, sealing, high lubrication and non-stickiness, electrical insulation and good Anti-aging endurance. Used as engineering plastics, it can be made into PTFE tubes, rods, strips, plates, films, etc. PTFE is a thermoplastic, but it is difficult to process with ordinary thermoplastic molding methods. Its "difficulty in processing" comes from its special formability, such as PTFE's large melting dryness, shear sensitivity, and large shrinkage. Creep resistance and low coefficient of friction. PTFE microfiber can be used to make needle felt filter material for the filtration of waste gas and waste liquid, with good corrosion resistance ...

AI Technical Summary

Problems solved by technology

[0006] In order to make up for the deficiencies in the prior art, the present invention proposes a production process for PTFE fiber cloth. The present invention is mainly used to solve the problems caused by the concentration distribution of polytetrafluoroethylene dispersion in the process of impregnating PTFE fiber cloth in the impregnation device. Inhomogeneous, often only the PTFE dispersion will be impregnated on the surface of the fiber cloth, so that the coating of the PTFE dispersion will accumulate and thicken on the fiber cloth, and it can also play a certain role in the process of impregnation. effect, but the fiber cloth will crack after drying, which will reduce the service life of the fiber cloth

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