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Porous material, gas sensor, and method for producing porous material

A technology of porous materials and fiber skeletons, which can be used in the analysis of materials, material analysis by electromagnetic means, instruments, etc., and can solve problems such as reduced air permeability and blockage.

Inactive Publication Date: 2019-07-23
SUMITOMO ELECTRIC FINE POLYMER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, when oil used in car care penetrates or adheres to the vent part, the holes in the vent part are clogged, which may result in decreased air permeability

Method used

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  • Porous material, gas sensor, and method for producing porous material
  • Porous material, gas sensor, and method for producing porous material
  • Porous material, gas sensor, and method for producing porous material

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Embodiment approach

[0022] First, embodiments of the present invention will be listed and described.

[0023] The porous material according to one embodiment of the present invention is a porous material having a large amount of fiber skeletons containing polytetrafluoroethylene (PTFE) as a main component, wherein another fluororesin is uniformly present on the periphery of fibers of the plurality of fiber skeletons On the surface, and another fluororesin is tetrafluoroethylene / perfluorodioxole copolymer (TFE / PDD), tetrafluoroethylene / perfluoromethyl vinyl ether copolymer (TFE / MFA), tetrafluoroethylene / perfluoromethyl vinyl ether copolymer (TFE / MFA) Vinyl fluoride / perfluoroethyl vinyl ether copolymer (TFE / EFA), tetrafluoroethylene / perfluoropropyl vinyl ether copolymer (TFE / PFA), or a combination thereof.

[0024] The porous material has a large amount of fibrous skeletons containing PTFE as a main component, and a plurality of pores are formed in regions surrounded by the fibrous skeletons. Sinc...

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Abstract

The porous material according to one embodiment of the present invention has a large number of fibrous frameworks each comprising polytetrafluoroethylene as the main component, wherein the fibrous frameworks have a fluororesin evenly present on the peripheral surface of the fibers, the fluororesin being a tetrafluoroethylene / perfluorodioxol copolymer, a tetrafluoroethylene / perfluoro(methyl vinyl ether) copolymer, a tetrafluoroethylene / perfluoro(ethyl vinyl ether) copolymer, a tetrafluoroethylene / perfluoro(propyl vinyl ether) copolymer or a combination of two or more of these.

Description

technical field [0001] The present invention relates to a porous material, a gas sensor and a method for preparing the porous material. [0002] The present application claims priority to Japanese Patent Application No. 2016-249895 filed on December 22, 2016, and the entire contents of this Japanese Patent Application are incorporated herein by reference. Background technique [0003] In recent years, gas sensors have been used to measure the concentration of oxygen contained in, for example, automobile exhaust. This gas sensor has a vent portion for introducing external air. For the vent part, the requirements are sufficient to meet the requirements of air permeability and high heat resistance of automobile exhaust. For example, when oil used in car maintenance penetrates or adheres to the vent portion, the holes of the vent portion are blocked, which may lead to a decrease in air permeability. Therefore, in addition to air permeability and heat resistance, the vent port...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/00C08J9/04G01N27/409
CPCG01N27/409G01N33/0027C08J2327/18C08J2427/18C08J5/18C08J9/0061
Inventor 林文弘宇野敦史铃木良昌室谷保彦碓井孝幸
Owner SUMITOMO ELECTRIC FINE POLYMER INC