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Coconut fat film dust collection composite material and its preparation method and application

A composite material, coconut fat film technology, applied in separation methods, chemical instruments and methods, membrane technology, etc., can solve the problems of low dust holding capacity, poor wear resistance, high humidity, and reduced charge reduction, and achieve ideal effects and air permeability. Good performance and excellent stability

Active Publication Date: 2020-11-24
吕爱民 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: high resistance of about 130pa, prone to creep when dust is loaded, poor wear resistance, easy to be broken and broken by metal dust such as silicon dust, quartz dust, aluminum dust or non-metallic inorganic dust with high abrasiveness, The polytetrafluoroethylene membrane is a surface filter. Dust cannot enter the interior of the membrane material during filtration, and it hangs on the surface of the membrane material. The dust holding capacity is small. The dust holding test of grain dust (corn flour) shows: Dust added 4h PTFE membrane mask When the surface dust holding capacity is 52mg / piece, the inhalation resistance reaches 294pa, which exceeds the applicable standard for dust masks in DB50 / T869-2018 dust workplace 350mg / piece, inspiratory resistance not greater than the limit of 220pa
The disadvantages are: it is easy to be "pasted" when receiving oily dust, the resistance rises quickly, the service life is short, and the dust holding capacity is less than 80mg / m 2 , Coal dust holding dust test shows: in the coal dust concentration 50mg / m 3 The inhalation resistance reaches 336pa within 3 hours of exposure to dust, which exceeds the limit value of AQ1114-2014 standard 5.9 for self-priming filter dust masks for coal mines.
The disadvantage is: the electrostatic fiber dust collection rate (filtration efficiency) is low, only about 51%. In addition to the particle size and density, it is also related to the ambient temperature and humidity of the workplace. High temperature increases the charge; high humidity reduces charge. 90% of the dust particles floating in the air are positively or negatively charged. Among them, positively charged The dust particles account for about 40% to 51%; the negatively charged dust particles account for about 37% to 54%; the uncharged dust particles account for about 9%.

Method used

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  • Coconut fat film dust collection composite material and its preparation method and application
  • Coconut fat film dust collection composite material and its preparation method and application
  • Coconut fat film dust collection composite material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Embodiment one, the preparation of coconut fat film dust collection composite material:

[0052] 1. Prepare coconut fat film solution: mix coconut oil (food grade), amino acid, and lecithin in a weight ratio of 1:2:2, add pure water and stir for 15 minutes, then add pectin and continue stirring for 15 minutes to obtain coconut fat Membrane solubles. Wherein the weight of pure water is 2 times of coconut oil, amino acid, lecithin raw material mixture, pectin addition is 0.6wt% of coconut oil, amino acid, lecithin raw material mixture.

[0053] 2. Preparation of coconut fat film: After the coconut fat film solution is purified by a filter, it is injected into the casting machine production line to form a sheet-like casting film, and then the coconut fat film is obtained by traction, trimming, and winding. After testing, its porosity is 91.5%.

[0054] 3. Preparation of coconut fat film composite material: the coconut fat film is attached to the hot-air non-woven fabric ...

Embodiment 2

[0056] Embodiment two, the preparation of coconut fat film dust collection composite material:

[0057] 1. Prepare coconut fat film solution: mix coconut oil (food grade), amino acid, and lecithin in a weight ratio of 1:2:2, add pure water and stir for 15 minutes, then add pectin and continue stirring for 15 minutes to obtain coconut fat Membrane solubles. Wherein the weight of pure water is 3 times of coconut oil, amino acid, lecithin raw material mixture, pectin addition is 0.4wt% of coconut oil, amino acid, lecithin raw material mixture.

[0058] 2. Preparation of coconut fat film: After the coconut fat film solution is purified by a filter, it is injected into the casting machine production line to form a sheet-like casting film, and then the coconut fat film is obtained by traction, trimming, and winding. After testing, its porosity is 89.3%.

[0059]3. Preparation of coconut fat film composite material: the coconut fat film is attached to the hot-air non-woven fabric a...

Embodiment 3

[0061] Embodiment three, the preparation of coconut fat film dust collection composite material:

[0062] 1. Preparation of coconut fat film solution: mix coconut oil derivatives, amino acids, and lecithin in a ratio of 1:2:2 by weight, add pure water and stir for 15 minutes, then add pectin and continue stirring for 15 minutes to obtain coconut fat film solution thing. Wherein the weight of pure water is 4 times of the raw material mixture of coconut oil derivative, amino acid and lecithin, and the added amount of pectin is 0.3wt% of the raw material mixture of coconut oil derivative, amino acid and lecithin.

[0063] 2. Preparation of coconut fat film: After the coconut fat film solution is purified by a filter, it is injected into the casting machine production line to form a sheet-like casting film, and then the coconut fat film is obtained by traction, trimming, and winding. After testing, its porosity is 93.1%.

[0064] 3. Preparation of coconut fat film composite mate...

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Abstract

The invention discloses a coconut fat film dust-collecting composite material, and a preparation method and an application thereof. The coconut fat film dust-collecting composite material is formed bycompounding a nonwoven fabric, a coconut fat film composite material, a geotextile, a melt-blown filter cloth and another nonwoven fabric, wherein the coconut fat film composite material is obtainedby the following steps: adding water to coconut oil or its derivative, amino acids, lecithin and pectin, performing mixing, carrying out melt casting to form a film, and compounding the coconut fat film on the hot air nonwoven fabric. The coconut fat film composite material, the geotextile, the melt-blown filter cloth and the nonwoven fabrics are welded and laminated by an ultrasonic machine to obtain the coconut fat film dust-collecting composite material. Protective masks or filter elements produced from the coconut fat film dust-collecting composite material can be used for preventing dustsand various particulate matter.

Description

technical field [0001] The invention relates to a coconut fat film dust-collecting composite material and its preparation method and application, specifically corresponding to GBZ2.1-2007 Occupational Exposure Limits of Hazardous Factors in the Workplace Part 1: Standards for Chemical Hazardous Factors, GB2626-Respiratory Protection Self-priming Filtration Anti-particulate respirator standard, DB52 / T743-2012 metal smelting industry self-priming filter dust mask standard, AQ1114-2014 coal mine self-priming filter dust mask standard, GB / T32610-2016 daily protective mask technical specification standard , DB50 / T869-2018 Dust respirators in dust workplaces are applicable to the technical field of specifications and standards, and are used to protect against dust and various particulate matter. (for ease of application, the present invention uses protective mask as the general designation of corresponding standard product). Background technique [0002] The current GB2626-Respir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/02B32B9/04B32B27/02B32B27/36B32B27/32B32B27/08B32B27/12B32B33/00B01D39/16
CPCB01D39/16B01D2239/0668B01D2239/10B32B5/022B32B5/26B32B9/02B32B9/047B32B27/08B32B27/12B32B33/00B32B2262/0253B32B2262/0284
Inventor 吕爱民
Owner 吕爱民
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