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Modified polytetrafluoroethylene turning large plate and processing method

A polytetrafluoroethylene and processing method technology, applied in other household appliances, applications, household appliances, etc., can solve the problems of poor wear resistance of polytetrafluoroethylene, and achieve increased mechanical strength, long service life, and widened application fields. Effect

Active Publication Date: 2015-01-07
JIANGSU XIANGJIAN NEW MATERIAL TECH CO LTD
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Problems solved by technology

And the wear resistance of PTFE is very poor

Method used

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Embodiment Construction

[0021] Whiskers are fibers grown from single crystals under artificially controlled conditions. Its diameter is very small, the whiskers are arranged in a highly orderly manner, and it does not contain defects such as grain boundaries, dislocations, and holes that usually exist in materials. Thus its strength is close to the theoretical value of a complete crystal. Its mechanical strength is equal to the force between adjacent atoms. The highly oriented structure of whiskers not only makes them have the characteristics of high strength, high modulus and high elongation, but also has electrical, optical, magnetic, dielectric, conductive and superconductive properties. The strength of whiskers is much higher than that of other chopped fibers, and it is mainly used as a reinforcement of composite materials for the manufacture of high-strength composite materials.

[0022] A modified polytetrafluoroethylene turning slab, the composition of the slab is 10-15% of whiskers, 10-15% ...

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Abstract

The invention discloses a modified polytetrafluoroethylene turning large plate which is characterized in that by comprising the components as follows: 10 to 15 percent of crystal whiskers, 10 to 15 percent of graphite and the rest percent of polytetrafluoroethylene. The invention simultaneously discloses a processing method of the large plate, which comprises the steps of crystal whisker surface modification treatment, material mixing, pressing, sintering, rotary cutting, post-treatment of the product, and the like. The large plate disclosed by the invention has not only the advantages of weather resistance, corrosion resistance, and the like of a polytetrafluoroethylene material, but also high creep resistance and wear resistance, so as to enhance the mechanical strength of the large plate. Therefore, the application range of the large plate in the field of chemical equipment such as liquid delivery pipes, gas exhaust pipes, steam pipes, and high pressure oil pipes of rolling mills is widened, and the service life of the large plate is prolonged.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a modified polytetrafluoroethylene turning large plate and a processing method thereof. Background technique [0002] Polytetrafluoroethylene (referred to as PTFE or F 4 ) customary name or trade name: "Teflon". White soft crystalline polymer. as material plastic, F 4 It not only has the highest density but also is one of the most corrosion-resistant materials in the world, and can be used continuously at 260°C. It has been proved by data that PTFE can still have good ductility under the condition of -269°C. In addition, PTFE also has the following characteristics; good non-stick properties, extremely outstanding dielectric properties and electrical insulation, and excellent aging resistance. [0003] Due to the various characteristics of polytetrafluoroethylene (PTFE), it has an extremely important position as a new material in the national economy. In particul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08K9/00C08K7/08C08K7/10C08K3/04B29C43/02B29K27/18B29L7/00
Inventor 王健
Owner JIANGSU XIANGJIAN NEW MATERIAL TECH CO LTD
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