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Deodorant fibrous structure and air filter

A fiber structure and deodorizing technology, which is applied in the field of deodorizing fiber structures and air filters, can solve the problem that secondary odor cannot be completely suppressed, and achieve the effects of excellent adsorption capacity, excellent performance and excellent reaction speed.

Active Publication Date: 2011-03-02
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing porous silica has strong hygroscopicity
Therefore, water-soluble odor components are absorbed and released with the moisture adsorbed and desorbed by porous silica, and even if this technology is implemented, the secondary odor cannot be completely suppressed

Method used

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  • Deodorant fibrous structure and air filter
  • Deodorant fibrous structure and air filter
  • Deodorant fibrous structure and air filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0120] (inorganic particles)

[0121] Hydrophobic porous particles are used as the inorganic particles. The hydrophobic porous particles have an average particle diameter of 4 μm and a specific surface area of ​​250 m 2 Hydrophobic porous silica (Mizupearl K-400 manufactured by Mizusawa Chemical Industry Co., Ltd.) with an average pore diameter of 18 nm and an equilibrium moisture content of 5.2% per g.

[0122] (water soluble amine compound)

[0123] As the water-soluble amine compound, adipic acid dihydrazide (manufactured by Nippon Chemical Co., Ltd.) was used.

[0124] (pH adjuster)

[0125] Adipic acid is used to adjust the attachment liquid to the weakly acidic side.

[0126] (base fiber structure)

[0127] 16.5% by mass of vinylon with a single fiber fineness of 1.5dtex, 22% by mass of vinylon with a single fiber fineness of 7.1dtex, 16.5% by mass of polyethylene terephthalate with a single fiber fineness of 2.0dtex, phosphorus-containing flame-retardant Agent acr...

Embodiment 2

[0132] (inorganic particles)

[0133] The same hydrophobic porous silica as that used in Example 1 was used.

[0134] (water soluble amine compound)

[0135] The same adipate dihydrazide as that used in Example 1 was used.

[0136] (pH adjuster)

[0137] In order to adjust the adhesion liquid to the weakly acidic side, melamine phosphate is used.

[0138] (base fiber structure)

[0139] The same substance as that used in Example 1 was used.

[0140] (deodorant fiber structure)

[0141] After impregnating the above-mentioned base material fibrous structure in the aqueous solution in which the above-mentioned hydrophobic porous silica, the above-mentioned adipic hydrazide, the above-mentioned pH adjuster, and the acrylic binder resin are uniformly dispersed according to the feeding amount described in Table 1, use The rolls were twisted and dried at 100° C. for 20 minutes to obtain a deodorant fiber structure.

[0142] Table 1 shows the evaluation results of the obtained ...

Embodiment 3

[0146] (inorganic particles)

[0147] Non-porous ultrafine particles are used as the inorganic particles. The ultrafine particles have an average particle size of 0.008μm and a specific surface area of ​​98.21m 2 / g of alumina (AEROXIDE Alu-C manufactured by Aerosil Corporation of Japan), and the equilibrium moisture content is 4%.

[0148] (water soluble amine compound)

[0149] The same adipate dihydrazide as that used in Example 1 was used.

[0150] (pH adjuster)

[0151] Adipic acid is used to adjust the attachment liquid to the weakly acidic side.

[0152] (base fiber structure)

[0153] The same substance as that used in Example 1 was used.

[0154] (deodorant fiber structure)

[0155] The above-mentioned base fiber structure is impregnated in the aqueous solution obtained by uniformly dispersing the above-mentioned alumina, the above-mentioned adipic hydrazide, the above-mentioned pH regulator, and the acrylic binder resin according to the dosages described in Tabl...

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Abstract

A deodorant fibrous structure is provided which efficiently removes aldehydes such as acetaldehyde and is extremely small in the risk of secondary odor emission. The deodorant fibrous structure comprises a fibrous structure and, deposited thereon, inorganic particles and a water-soluble amine compound. In an environment having a temperature and relative humidity regulated to 25 DEG C and 75%, respectively, the structure has an equilibrium moisture content of 15 mass% or lower. When the deodorant fibrous structure is immersed in water in an amount of 3 mass% of the water, this water has a pH of 3.5-7.

Description

technical field [0001] The present invention relates to a deodorizing fibrous structure and an air filter. Background technique [0002] There are many kinds of pollutants in the air. Among them, aldehydes such as acetaldehyde in particular pose a serious problem. Acetaldehyde is a typical malodorous component contained in the exhaust gas of cigarettes and automobiles. Not only does it have a low threshold value, it is easy to feel the odor even at a low concentration, and it is pointed out that it has adverse effects on the human body. In order to remove malodorous components in the air, activated carbon with large surface area and pore volume is generally used at present. However, the equilibrium adsorption amount of acetaldehyde in activated carbon is significantly smaller than that of other malodorous components, which does not have practical performance. [0003] Therefore, as means for improving the acetaldehyde adsorption and removal performance of activated carbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79A61L9/01A61L9/16B01D39/14B01J20/22B01J20/28D06M13/422D06M15/263
CPCB01D2239/0609B01D2239/0457B01D2239/0407A61L9/16B01D2239/0618A61L9/014D06M23/08D06M13/005B01D2239/1291B01D2239/045D06M11/46D06M13/422B01D2239/0428D06M11/79D06M11/45B01D2239/1241B01J20/06B01J20/08B01J20/103B01J20/28004B01J20/28028B01J20/2803B01J20/28059B01J20/28061B01J20/28083B01J20/3204B01J20/3208B01J20/3223B01J20/3234B01J20/3236B01J20/3248
Inventor 浅田康裕安藤圭一三好贤吾
Owner TORAY IND INC
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