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Polytetrafluoroethylene-polypropylene composite electret air filtering material and preparation method thereof

An air filter material, polytetrafluoroethylene technology, applied in the field of polytetrafluoroethylene-polypropylene composite electret air filter material and its preparation, can solve the problem of insufficient removal of fine particles, easy breeding of harmful microorganisms in filter materials, secondary No secondary pollution and other problems, to achieve good space charge storage capacity, excellent filtration efficiency, and reduce the effect of filtration resistance

Inactive Publication Date: 2017-01-04
中安丰磊环境科技股份有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary air filter materials are not thorough enough to remove fine particles, and harmful microorganisms are easy to breed on the filter materials, and there is a possibility of secondary pollution

Method used

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Embodiment Construction

[0029] A polytetrafluoroethylene-polypropylene composite electret air filter material consists of the following raw material components in parts by weight: polypropylene 45, polytetrafluoroethylene suspended fine powder 25, silicon monoxide 9, powdered activated carbon 15,3- Aminopropyltriethoxysilane coupling agent 3, glacial acetic acid 1.5, appropriate amount of deionized water, low density polyethylene wax 2, antioxidant 1010 1, titanate coupling agent 1.3, sodium chloride 2.

[0030] Specific steps are as follows:

[0031] (1) Preparation of silicon nanowires:

[0032] ①. Place the small porcelain boat containing silicon monoxide powder horizontally in the middle of the alumina tube, then place the tube in a high-temperature tube furnace, vacuumize at 100Pa, and then raise the temperature to 200 and 900°C respectively Keep warm for 60 minutes, then heat up to 1200°C for 4 hours;

[0033] ②. Afterwards, cool down to 600°C at a rate of 2°C / min and keep it warm for 30 minu...

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Abstract

The invention discloses a polytetrafluoroethylene-polypropylene composite electret air filtering material and a preparation method thereof. The polytetrafluoroethylene-polypropylene composite electret air filtering material comprises, by weight, 40-50 parts of polypropylene, 20-30 parts of polytetrafluoroethylene suspended fine powder, 7-13 parts of silicon monoxide, 11-17 parts of powdered activated carbon, 2-4 parts of 3-aminopropyl triethoxy silane coupling agent, 0.6-1.7 parts of glacial acetic acid, an appropriate amount of deionized water, 1-3 parts of low-density polyethylene wax, 0.8-2 parts of antioxidants 1010, 0.8-1.5 parts of titanate coupling agent and 1-3 parts of sodium chloride. Silicon nano-wires containing alpha-quartz are prepared and added into melt-blown polypropylene electret materials, the air filtering material has quite high electret charge stability and excellent filtering efficiency, the activated carbon is used for loading the silicon nano-wires treated by the silane coupling agent, the loading capacity of the activated carbon for the silicon nano-wires is improved, and adsorption of the filtering material for harmful substances in air is effectively improved.

Description

technical field [0001] The invention belongs to the field of air filtration, in particular to a polytetrafluoroethylene-polypropylene composite electret air filter material and a preparation method thereof. [0002] technical background [0003] With the progress of the times, people's requirements for environmental quality are getting higher and higher. However, the rapid economic development has aggravated the pollution of the environment, and the dust, chemicals, and harmful microorganisms in the air have had adverse effects on people's health. Therefore, effective control of harmful substances in the air is a major problem to be solved. The application of air filters and filter materials is an important means of purifying the air. Ordinary air filter materials are not thorough enough to remove fine particles, and harmful microorganisms are easy to breed on the filter materials, and there is a possibility of secondary pollution. Electret air filter materials provide the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01D53/02
CPCB01D39/14B01D53/02B01D2239/0407B01D2239/0435B01D2239/0442B01D2239/10
Inventor 谢爱兵
Owner 中安丰磊环境科技股份有限公司
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