A kind of filter paper for PM2.5 protective mask and preparation method thereof

A filter paper and filter paper technology, applied in the field of filter paper, can solve the problems of high resistance, attenuated use effect of electret materials, and difficulty in meeting the needs of human breathing comfort and clean air at the same time.

Active Publication Date: 2018-09-07
CHINA NAT PULP & PAPER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] PM2.5 protective masks use human respiration (generally 30-50Pa) as the purification power. Currently, most of the filter materials in commercially available masks are made of non-woven fabrics, activated carbon, electret materials, etc., and most of them have low efficiency or The problem of high resistance, especially when the breathing flow rate is greater than 30L / min, it is difficult to meet the needs of the human body for breathing comfort and clean air at the same time; moreover, the use effect of electret materials is generally easy to continue to attenuate with the prolongation of storage time, affecting filter effect

Method used

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  • A kind of filter paper for PM2.5 protective mask and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The present embodiment prepares filter paper for PM2.5 protective mask, comprises the following steps:

[0022] (1) Tencel fiber is beaten by a disc refiner, the refining concentration is 8%, and the gap between the discs is controlled at 0.2 mm.

[0023] (2) After mixing 30 parts of the slurry in step (1) with 30 parts of PET fibers, add 0.5 parts of polyamide polyamine epichlorohydrin resin (PAE) and cationic polyamide in the dual retention system in sequence. 0.08 parts of acrylamide, 0.08 parts of anionic polyacrylamide in the binary retention system, and 40 parts of calcium carbonate filler. Add appropriate amount of water to dilute the slurry, and stir well to mix evenly.

[0024] (3) After the slurry mixture in step (2) is formed by a fourdrinier paper machine or a cylinder paper machine, it is pressed by a shoe press with a nip pressure of 600 N / m, and then enters a drying cylinder for drying. During the process, the density of the filter paper substrate shoul...

Embodiment 2

[0029] The present embodiment prepares filter paper for PM2.5 protective mask, comprises the following steps:

[0030] (1) Tencel fibers are beaten by a disc refiner, the refining concentration is 10%, and the gap between the discs is controlled at 0.2 mm.

[0031] (2) After mixing 40 parts of the slurry in step (1) with 20 parts of PET fibers, add 0.3 parts of polyamide polyamine epichlorohydrin resin (PAE) and cationic polyamide in the binary retention system in sequence. 0.05 parts of acrylamide, 0.05 parts of anionic polyacrylamide in the binary retention system, and 30 parts of calcium carbonate filler. Add appropriate amount of water to dilute the slurry, and stir well to mix evenly.

[0032] (3) After the slurry mixture in step (2) is formed by a fourdrinier paper machine or a cylinder paper machine, it is pressed by a shoe press with a nip pressure of 600 N / m, and then enters a drying cylinder for drying. During the process, the density of the filter paper substrate ...

Embodiment 3

[0037] The present embodiment prepares filter paper for PM2.5 protective mask, comprises the following steps:

[0038] (1) Tencel fibers are beaten by a disc refiner, the refining concentration is 9%, and the gap between the discs is controlled at 0.3 mm.

[0039] (2) After mixing 35 parts of the slurry in step (1) with 35 parts of PET fibers, add 0.3 parts of polyamide polyamine epichlorohydrin resin (PAE), cationic poly 0.10 parts of acrylamide, 0.08 parts of anionic polyacrylamide in the binary retention system, and 35 parts of calcium carbonate filler. Add appropriate amount of water to dilute the slurry, and stir well to mix evenly.

[0040] (3) After the slurry mixture in step (2) is formed by a fourdrinier paper machine or a cylinder paper machine, it is pressed by a shoe press with a nip pressure of 600 N / m, and then enters a drying cylinder for drying. During the process, the density of the filter paper substrate should be increased as much as possible.

[0041] (4...

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Abstract

The present invention belongs to the technical field of filtration paper, and discloses filtration paper for PM 2.5 protection face masks, and a preparation method thereof, wherein the filtration paper base material is mainly prepared from the following raw materials by weight: 25-40 parts of Tencel fiber, 20-35 parts of polyester fiber, 30-40 parts of a calcium carbonate filler, 0.1-0.3 part of a binary retention aid, and 0.3-0.8 part of a polyamide polyamine epichlorohydrin resin. The preparation method is characterized in that the filtration paper base material with characteristics of high filling capacity and compact structure is made and is subjected to rewetting, the obtained filtration paper base material enters a super calender, and dilute acid impregnating treatment, water leaching deacidification and drying shaping are sequentially performed to form the filtration paper. According to the present invention, the compact base material is made by using the wet molding and the super calendering, the high filling and the dilute acid treatment are combined, and the static submicron-scale pore size is constructed; and the pore size distribution and the porosity of the filtration paper are regulated by using the filler so as to achieve the regulation of the filtration resistance and meet the requirements of high efficiency and low resistance of the PM 2.5 protection face mask on the filtration paper.

Description

technical field [0001] The invention relates to the technical field of filter paper, in particular to a filter paper for a PM2.5 protective mask and a preparation method thereof. Background technique [0002] PM2.5 protective masks use human respiration (generally 30-50Pa) as the purification power. Most of the filter materials in commercially available masks currently use non-woven fabrics, activated carbon, electret materials, etc. as the main materials, and most of them have low efficiency or The problem of high resistance, especially when the breathing flow rate is greater than 30L / min, it is difficult to meet the needs of the human body for breathing comfort and clean air at the same time; and the use effect of electret materials is generally easy to continue to decay with the prolongation of storage time, affecting filter effect. And smog will continue to exist for quite a long time in the future, and there is a trend of gradually spreading and aggravating, so explori...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/08D21F11/00D21H15/10D21H17/66D21H17/55
CPCD21F11/00D21H15/10D21H17/55D21H17/66D21H27/08
Inventor 黄小雷朝鲁门刘文刘群华陈雪峰史贺
Owner CHINA NAT PULP & PAPER RES INST CO LTD
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