Electret nano fiber filter material for HVAC (heating, ventilating, and air conditioning) and preparation method thereof

A technology of nanofibers and filter materials, which is applied in the field of electrospun nanofiber electret filter materials for HVAC and its preparation, which can solve the problems of easy failure and service life, and limit the effect of HVAC systems on improving air quality.

Pending Publication Date: 2019-04-05
嘉兴富瑞邦新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the HVAC system has a great impact on the control of indoor air quality. At present, the filter materials used in the HVAC system are mostly melt-blown filter materials, which are prone to failure and short service life in high-humidity environments, which seriously limits the impact of the HVAC system on air quality. improvement effect

Method used

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  • Electret nano fiber filter material for HVAC (heating, ventilating, and air conditioning) and preparation method thereof
  • Electret nano fiber filter material for HVAC (heating, ventilating, and air conditioning) and preparation method thereof
  • Electret nano fiber filter material for HVAC (heating, ventilating, and air conditioning) and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A kind of preparation method of electret nanofiber filter material for HVAC, its concrete steps are as follows:

[0054] (1) Prepare a liquid mixture in which the polymer is dissolved: add polyvinylidene fluoride to N,N-dimethylformamide, and continuously stir for 11 hours with a magnetic stirring device;

[0055] (2) Electrospinning is carried out after being heated to 50 ℃ with the liquid mixture that dissolves the polymer that mass concentration is 22%, carries out rapid cooling and solidification to the liquid mixture that dissolves the polymer in the spinneret hole during the electrospinning process, Among them, rapid cooling and solidification means that the liquid mixture dissolved in polymer is cooled to -40°C within 0.3ms at the outlet 3cm of the spinneret hole. The process parameters of electrospinning are: voltage 50KV, receiving distance 20cm, infusion speed 0.1 mL / h, temperature is 20°C, humidity is 55%;

[0056] (3) The fiber obtained by electrospinning i...

Embodiment 2～24

[0061] A kind of preparation method of electret nanofiber filter material for HVAC, its specific steps are consistent with embodiment 1, difference is the kind of polymer and solvent selected when step (1) prepares the liquid mixture that dissolves polymer and final The performance of the prepared product is shown in the table below. In the table, A represents the surface electrostatic potential, B represents the filtration efficiency for particles of 0.006-1 μm, the unit of fiber diameter is μm, and the unit of pore size is μm; The unit of fiber diameter is μm, and the unit of nanofiber weight is g / m 2 , the unit of porosity is %; the unit of A is V, the unit of hydrophobic angle is (°), the unit of B is %, the unit of piezoresistance is Pa, and the unit of dust holding capacity is g / m 2 :

[0062]

[0063]

[0064]

Embodiment 25

[0066] A kind of preparation method of electret nanofiber filter material for HVAC, its concrete steps are as follows:

[0067] (1) Prepare a liquid mixture in which the polymer is dissolved: add polyvinylidene fluoride to N-methylpyrrolidone, and continuously stir for 18 hours with a magnetic stirring device;

[0068](2) Electrospinning is carried out after heating the polymer-dissolved liquid mixture with a mass concentration of 36% to 85° C. During the electrospinning process, the polymer-dissolved liquid mixture in the spinneret hole is rapidly cooled and solidified, Among them, rapid cooling and solidification means that the liquid mixture dissolved in polymer is cooled to -20°C within 0.1ms at the outlet 4cm of the spinneret hole. The process parameters of electrospinning are: voltage 20KV, receiving distance 10cm, infusion speed 5.2 mL / h, temperature is 15°C, humidity is 60%;

[0069] (3) The fiber obtained by electrospinning is instantly cooled to below 0°C after bein...

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Abstract

The invention relates to an electret nano fiber filter material for HVAC (heating, ventilating, and air conditioning) and a preparation method thereof. The preparation method includes: subjecting a liquid mixture with a polymer to electrostatic spinning to obtain an electret nano fiber filter material for HVAC; subjecting the liquid mixture with the polymer at a spinneret outlet during electrostatic spinning to quick cooling curing, wherein quick cooling curing refers to cooling the liquid mixture with the polymer 3-5 cm away from a spinneret outlet to -40 DEG C to -20 DEG C within 0.1-0.9 ms.The finished product has surface electrostatic potential of 1700-2300 V, drain angle of >150 DEG, and piezo-resistance of less than 20 Pa; charge attenuation never occurs even after one month of storage. The preparation method is simple and low in cost and has low equipment requirement; a produced HVAC system with the electret nano fiber filter material has good electret effect, excellent filtering performance and excellent application prospect.

Description

technical field [0001] The invention belongs to the field of nanofiber electret, relates to an electret nanofiber filter material for HVAC and a preparation method thereof, in particular to an electrospun nanofiber electret filter material for HVAC and a preparation method thereof. Background technique [0002] High-performance electrospun nanofiber filter materials need to have the characteristics of high efficiency and low resistance, but conventional filter materials rely on the structural characteristics of the material itself (pore size, packing density, etc.) to achieve effective filtration of particles, usually in high-efficiency At the same time, it also has a high pressure resistance, resulting in poor filtration performance, so it is difficult to achieve an effective balance between filtration efficiency and pressure resistance, high efficiency and low resistance only by the structural characteristics of the fiber itself. The introduction of electrostatic adsorptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/02B01D39/04D01F6/12D01F6/06D01F6/62D01F6/16D01F6/76D01F6/26D01F8/06D01F8/10D01F8/08D01F6/66D01F6/70D01F6/32D01F8/16D01F8/14
CPCB01D39/02B01D39/04B01D2239/10D01F6/06D01F6/12D01F6/16D01F6/26D01F6/32D01F6/62D01F6/625D01F6/66D01F6/70D01F6/76D01F8/06D01F8/08D01F8/10D01F8/14D01F8/16
Inventor 赵兴雷蒋攀华婷姜宗志
Owner 嘉兴富瑞邦新材料科技有限公司
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