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air filter media

An air filter and filter material technology, which is applied in the field of air filter material, can solve the problems of air filter material being easily electrified, and achieve the effects of pressure loss, low pressure loss, and high electrification effect

Active Publication Date: 2021-08-27
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, it is known to add hindered amine-based, benzotriazole-based, hindered phenol-based light stabilizers, etc. to the fine polymer fibers constituting the air filter material, and to perform electret treatment after spinning, so that the air The filter material becomes easily electrified

Method used

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Examples

Experimental program
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Effect test

Embodiment approach

[0030] Hereinafter, embodiments of the air filter medium of the present invention will be described with reference to the drawings. In addition, the content demonstrated below is only an example of implementation, and is not limited to this.

[0031] figure 1 It is a schematic diagram showing the laminated structure of the air filter media. Such as figure 1 As shown, the air filter material 1 has a structure including a base material layer 2 and a fine fiber layer 3 provided on the upper surface of the base material layer 2 and having chargeability.

[0032] The base material layer 2 constituting the air filter medium 1 is formed of glass fibers, pulp fibers, resin fibers, carbon fibers, inorganic fibers, or at least one of these fibers. Examples of the method for producing the base material layer 2 include a spunbond method, a dry or wet papermaking method, a melt blown method, a spunbond method, an air-laid method, a thermal bonding method, and the like.

[0033] Regardi...

reference example 1

[0065] An air filter medium is manufactured using the manufacturing method described in this embodiment. Polystyrene was used as a polymer raw material, and polystyrene was dissolved in N,N-dimethylacetamide to prepare a 20% by weight polystyrene solution. A small amount of Irganox 565, which is a hindered phenolic light stabilizer, was added to this solution to obtain a spinning solution.

[0066] Thereafter, the above-mentioned spinning solution was spun by using an electrospinning method to obtain an air filter material having a fine fiber layer formed on the substrate layer.

[0067] Next, perform the above-mentioned performance evaluation, in image 3 Indicates its result.

reference example 2

[0069] Using the same method as in Reference Example 1 above, a 20% by weight polystyrene solution was produced. A small amount of Tinuvin 326 as a benzotriazole-based light stabilizer was added to this solution to obtain a spinning solution.

[0070] Thereafter, an air filter material was obtained by using an electrospinning method.

[0071] Next, the same performance evaluation as that of Reference Example 1 was carried out. image 3 Indicates its result.

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Abstract

An air filter filter material (1), comprising a substrate layer (2) and a chargeable fine fiber layer (3), the fine fiber layer (3) comprising a hindered phenolic light stabilizer and benzotri Polymer material of azole light stabilizer. The volume resistivity of polymer materials is 10 16 Ωcm or more, and the dielectric loss tangent value of the polymer material is 0.001 or less. When X is the weight of the hindered phenol-based light stabilizer and Y is the weight of the benzotriazole-based light stabilizer, the relationship of 0<(Y / X)≦1.25 is satisfied.

Description

technical field [0001] The present invention relates to an air filter medium incorporated in an air cleaning device or the like for the purpose of air cleaning. Background technique [0002] Air filter media incorporated in air cleaners that remove and purify allergens such as dust, dust, and pollen in the atmosphere require low pressure loss and high collection efficiency. Therefore, Coulomb force and induction force are imparted to the air filter medium by electret treatment using corona discharge, liquid immersion, or the like. As a result, the air filter material has a charge trapping function in addition to the physical trapping function, and a high trapping efficiency is achieved in the initial stage of use. However, it is known that the charging effect gradually decreases and the collection efficiency decreases due to use in various environments. Therefore, the air filter medium is required to maintain the electrification effect even after imposing a load under vari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14A61L9/16B03C3/28
CPCA61L9/16B01D39/14B03C3/28
Inventor 加藤港小森大辅大西玄将辻由浩稻垣纯
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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