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High temperature-resistant polyaryloxadiazole nonwoven filter material and preparation method thereof

A technology of polyaryloxadiazole and polyaryloxadiazole fiber is applied in separation methods, chemical instruments and methods, filtration and separation, etc., and can solve the problems of poor dyeability and thermal conductivity, easy generation of static electricity, large thermal expansion coefficient, etc. Achieve the effect of improving continuous safe use performance and cost-effective advantages

Inactive Publication Date: 2015-07-29
SHANGHAI TANLON FIBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In its molecular structure, the volume of fluorine atoms is larger than that of hydrogen atoms, and the binding force of fluorine-carbon bonds is also strong, which plays a role in protecting the entire carbon-carbon main chain, making PTFE fibers have excellent chemical stability and excellent corrosion resistance. Compared with other synthetic fiber varieties; the surface of the fiber has a waxy feeling and a small friction coefficient; the actual use temperature is 120-180 ° C; it also has good weather resistance and flex resistance, but poor dyeing and thermal conductivity, and poor wear resistance Good, large coefficient of thermal expansion, easy to generate static electricity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weighing: 40 kg of polyarylene oxadiazole fiber, 60 kg of PSA fiber.

[0027] Opening, the opened fibers are then made into a homogeneous mixture, using standard carding and cross-winding equipment, these fibers are converted into cross-staggered fine mats, the fine mats are rough stitched on a standard needle loom, and the two The fine mats are combined and needle-punched on both sides to make the filter material, the grammage of the filter material is 500g / m 2 .

Embodiment 2

[0029] Weighing: 20 kg of polyarylene oxadiazole fiber, 80 kg of meta-aramid fiber.

[0030] The method described in Example 1 was used to prepare the filter material of this example.

Embodiment 3

[0032] Weighing: 70 kg of polyarylene oxadiazole fiber, 30 kg of polytetrafluoroethylene fiber.

[0033] The method described in Example 1 was used to prepare the filter material of this example.

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Abstract

The invention relates to a high temperature-resistant polyaryloxadiazole nonwoven filter material and a preparation method thereof. The high temperature-resistant polyaryloxadiazole nonwoven filter material is prepared by blending 20-70wt% of a polyaryloxadiazole fiber with 30-80wt% of other heat resistant fibers. The polyaryloxadiazole fiber is added in the further blending of the original heat resistant fibers, so the filtering efficiency is guaranteed, and the continuous safe use performance of a filter felt in long-term high temperature environment is further improved. The filter felt and a filter bag made by adopting the filter material have higher cost performance than those made by adopting high temperature-resistant filter materials in the prior art.

Description

technical field [0001] The invention relates to a filter material and a preparation method thereof, in particular to a high-temperature resistant polyarylene oxadiazole non-woven filter material and a preparation method thereof. Background technique [0002] Heat-resistant fibers generally include polyphenylsulfone terephthalamide fibers, meta-aramid fibers, polytetrafluoroethylene fibers, polyimide fibers and polyphenylene sulfide fibers. [0003] Polyphenylsulfone terephthalamide fiber, referred to as PSA fiber, has similar properties to aramid fiber, but it is significantly better than aramid fiber in terms of flame resistance and thermal oxygen aging resistance. When heated in 300°C hot air for 100 hours, the loss of strength is less than 5%, the limiting oxygen index exceeds 33; it also has good dyeability, electrical insulation, chemical resistance, radiation resistance, etc. [0004] Meta-aramid fiber, also known as: aramid 1313 fiber, polyisophthalamide metaphenylen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16D04H1/4326D04H1/4382D04H1/46
Inventor 王琛刘鹏
Owner SHANGHAI TANLON FIBER CO LTD
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