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PTFE nano mask film and preparation method thereof

A technology of PTFE and masks, which is applied in the field of PTFE nano-mask film and its preparation, can solve the problems of poor isolation effect, impenetrability, and decreased protective efficiency of masks.

Active Publication Date: 2020-07-07
SHANDONG SENRONG PLASTIC IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When droplets containing pneumonia virus approach the melt-blown non-woven fabric, they will be electrostatically adsorbed on the surface of the non-woven fabric and cannot penetrate
The design requirements of ordinary medical surgical masks can block bacterial aerosol particles with a diameter > 3 microns. The core layer of the mask has a large pore diameter, which cannot perfectly realize the physical isolation of small particles of bacteria and viruses. The main method is electrostatic adsorption, but There are huge defects in electrostatic adsorption masks: after the static electricity is added, it is not always in a saturated state, the static electricity content in the non-woven fabric is gradually reduced, and the attenuation of static electricity will inevitably lead to the loss of the protective effect of the melt-blown non-woven fabric mask. Decrease; and as the wearing time increases (such as 1 to 2 hours), the mask will be damp, its electrostatic adsorption capacity will be weakened, and the isolation effect will gradually deteriorate
Due to the tiny size of the virus, ordinary medical surgical masks cannot achieve long-term effective isolation protection

Method used

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  • PTFE nano mask film and preparation method thereof
  • PTFE nano mask film and preparation method thereof
  • PTFE nano mask film and preparation method thereof

Examples

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Effect test

Embodiment 1

[0040] The PTFE nano-mask film described in the present embodiment 1, in parts by mass, the raw material composition is as follows:

[0041]

[0042]

[0043] in:

[0044] The PTFE dispersion resin is DF-203, and the manufacturer is Shandong Dongyue Polymer Material Co., Ltd.

[0045] The technical indicators of DF-203 are: bulk density 435g / L, tensile strength 30MPa, elongation at break 330%, moisture content < 0.03%, average particle size 470μm.

[0046] The pore forming agent is a mixture of white oil and hydrocarbon solvent oil; the hydrocarbon solvent oil is iso-dodecane; the mass ratio of white oil to iso-dodecane is 3.5:0.7.

[0047] The antibacterial agent is anatase titanium dioxide.

[0048] The dispersant is a fluorocarbon surfactant, and the fluorocarbon surfactant is 3-trimeric epoxyhexafluoropropane amidopropyl betaine.

[0049] The antistatic agent is tris(lauryl)methyl ammonium chloride.

[0050] The preparation method of the PTFE nano mask film descr...

Embodiment 2

[0064] The PTFE nano-mask film described in present embodiment 2, in parts by mass, raw material composition is as follows:

[0065]

[0066]

[0067] in:

[0068] The PTFE dispersion resin is DF-204, and the manufacturer is Shandong Dongyue Polymer Material Co., Ltd.

[0069] The technical indicators of DF-204 are: bulk density 440g / L, tensile strength 33MPa, elongation at break 355%, moisture content < 0.03%, average particle size 485μm.

[0070] The pore forming agent is a mixture of white oil and hydrocarbon solvent oil; the hydrocarbon solvent oil is isomerized hexadecane; the mass ratio of white oil to isomerized hexadecane is 4:0.5.

[0071] The antibacterial agent is anatase titanium dioxide.

[0072] The dispersant is a fluorocarbon surfactant, and the fluorocarbon surfactant is 8-3-9 fluorocarbon-hydrocarbon flexible bridge mixed-chain diquaternary ammonium.

[0073] The antistatic agent is tris(lauryl)methyl ammonium chloride.

[0074] The preparation meth...

Embodiment 3

[0088] The PTFE nano-mask film described in present embodiment 3, in parts by mass, raw material composition is as follows:

[0089]

[0090] in:

[0091] Described PTFE dispersion resin is 104C, and manufacturer is Japan Daikin.

[0092] 104C technical indicators are: Density: 2.2g / cm 3 , the tensile strength is 34.6MPa, the elongation at break is 480%, the moisture content is 0.01%, and the average particle size is 450μm.

[0093] The pore forming agent is a mixture of white oil and hydrocarbon solvent oil; the hydrocarbon solvent oil is iso-dodecane; the mass ratio of white oil to iso-dodecane is 3:0.6.

[0094] The antibacterial agent is anatase titanium dioxide.

[0095] The dispersant is a fluorocarbon surfactant, and the fluorocarbon surfactant is 3-trimeric epoxyhexafluoropropane amidopropyl betaine.

[0096] The antistatic agent is tris(lauryl)methyl ammonium chloride.

[0097] The preparation method of the PTFE nano mask film described in present embodiment 3...

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Abstract

The invention belongs to the technical field of polytetrafluoroethylene films, and particularly relates to a PTFE nano mask film and a preparation method thereof. The PTFE nano mask film is prepared from the following raw materials in parts by mass: 100 parts of PTFE dispersion resin, 25 to 40 parts of pore-forming agent, 0.5 to 0.8 part of an antibacterial agent, 0.08 to 0.1 part of a dispersingagent, and 0.5 to 0.8 part of an antistatic agent. The PTFE nano mask film has the advantages that the pore diameter is 100 to 200 nm, the porosity is 90 to 95 percent, the pure physical interceptionis realized, the filtering pressure difference is lower than 6 to 7mmH2O, the change due to the temperature is avoided, and the fear of a humid environment is avoided; existing fused spray adopts an electrostatic adsorption mechanism, fibers are thick, holes are large, only static electricity is used as a filtering mechanism, and once the static electricity fails due to temperature or humidity, ahuman body cannot be protected.

Description

technical field [0001] The invention belongs to the technical field of polytetrafluoroethylene membranes, and in particular relates to a PTFE nano-mask membrane and a preparation method thereof. Background technique [0002] Most of the large-scale outbreaks in recent years are respiratory infectious diseases, such as SARS, highly pathogenic avian influenza, influenza A H1N1, and the outbreak of new coronavirus pneumonia in early 2020; the diameter of the new coronavirus is about 80-120 nanometers, and it can infect humans. , rats, pigs, cats, cattle and other vertebrates, the route of transmission is mainly through droplets such as coughing or sneezing, which has the characteristics of fast transmission speed, wide susceptible population, and high incidence rate. Wearing a mask can block the infiltration of pathogenic microorganisms It is an effective means to prevent the prevalence of respiratory infectious diseases and protect the health of personnel. [0003] Commonly u...

Claims

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Application Information

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IPC IPC(8): C08L27/18C08K3/22C08K5/19C08K5/20C08J9/28C08J5/18A41D13/11A41D31/102A41D31/04B29C69/02B29L7/00
CPCC08J9/28C08J9/0066C08J9/0095C08J9/0028C08J5/18A41D13/11A41D31/102A41D31/04B29C69/02B29L2007/00C08J2201/0502C08J2327/18
Inventor 苏延磊荣钦功曹开斌胥平周静荣海燕李雷涛
Owner SHANDONG SENRONG PLASTIC IND TECH
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