PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
E-PTFE nano composite mask special membrane
Classification:
Industry dynamics
Author:
PFA tube little sister
Source:
Dankai
Release time:
2023-01-05
Visits:
1. product introduction
The key functional material of e-PTFE nano-composite mask is the e-PTFE of microfiltration membrane composite filter material, which uses the principle of physical barrier to protect various particles (such as dust, smoke, fog and micro-life.
matter). The mask material is mainly composed of the outer layer of non-woven fabric or woven fabric, the middle layer of PTFE composite filter material, the inner layer of skin-friendly non-woven fabric or woven fabric composite.
2. product features
e-PTFE nano-microfiltration membrane composite filter material is composed of e-PTFE microporous membrane and non-woven fabric, with excellent medium resistance and weather resistance (UV). e-PTFE microporous membrane micropore
Unique structure-the fibers are radially distributed with "nodes" as the center, and the different "nodes" are connected by micro-fine fibers, just like thousands of layers of screens with different mesh numbers.
Together, the aperture is 0.1-1.4um, and the aperture rate is more than 80%. In the breathable at the same time from the physical level to achieve a good barrier to a variety of particles, a long time to wear still have.
Protection capability.
The e-PTFE nano-composite mask film provided by Dankai Teflon has been tested by Guangzhou Inspection and Testing Certification Group Co., Ltd. and Shanghai Maisize Social Security Testing Technology Service Co., Ltd.
Performance indicators meet the requirements of GB2626-2006KN95 and EN149:2001 FFP2NR. Based on the principle of electrostatic adsorption, ordinary N95 series masks increase with the use of time.
Add or temperature and humidity changes, the filtering effect has decreased significantly. Based on the principle of physical barrier, the e-PTFE microfiltration membrane plane mask is not sensitive to the influence of water, temperature and humidity, and can withstand boiling.
Water, alcohol, 84 disinfectant and other disinfection and sterilization methods, if the correct wear without damage, can be used again after disinfection.
Explanation and description of e-ptfe nano mask film
Many people who do textiles know that Dankai PTFE membrane has the functions of waterproof and moisture permeability, but it is not clear that only ePTFE membrane has the functions of waterproof and moisture permeability. PTFE membrane in production
The above points are: turning, calendering, casting, blow molding, stretching and other processes, while only the expanded polytetrafluoroethylene that has been stretched in both directions has fibrous channels, which are ePTFE micropores.
Membrane.
ePTFE is a microporous membrane formed by expanding and stretching polytetrafluoroethylene as a raw material. Experiments have found that the surface of PTFE membrane is covered with fibril-like micropores, with as many as 9 billion per square inch.
Micropores, cross-section is a network structure, in the three-dimensional structure of the hole has a mesh connection, hole set, hole bending and other very complex structures. ePTFE microporous membrane has good
Thermal stability and wide use temperature, can work continuously at a low temperature of minus 200 ℃ to a high temperature of minus 260 ℃, with a melting point of up to 327 ℃, with non-flammability and excellent chemical properties.
Good stability, anti-acid, alkaline, can and many highly corrosive media, friction coefficient is small, hydrophobic. Small pore size (average pore size 0.2mm), blocking some toxic gas
body or aerosol penetration, low surface energy to prevent the penetration of some toxic liquids.
The use of ePTFE membrane in outdoor clothing, clothing membrane due to PTFE microporous diameter range of 0.1-0.5 microns, while the diameter of water vapor molecules is 0.0004 microns, rain
The diameter of the light mist with the smallest diameter in the water is 20 microns, and the diameter of the drizzle is as high as 400 microns. The diameter of the pores is between water vapor and rainwater, and the diameter of the micropores is smaller than that of water molecules.
The smallest light fog, much larger than the diameter of water vapor molecules, can make water vapor through and water droplets can not pass through, the use of this microporous structure can achieve excellent waterproof moisture permeability function, so
For the top waterproof breathable material.
Figure 1: e-ptfe nano mask film Source: Network
In addition, because the hole is extremely small and longitudinal non-standard bending arrangement, so that the wind can not pass through and thus has the characteristics of wind and good warmth. Special place on ePTFE membrane
After being compounded with other fabrics, it is widely used in military clothing, medical clothing, casual clothing, fire protection, anti-biochemical,-
Poison, immersion operations, outdoor sports clothing, shoes and hats, gloves, sleeping bags, tents and other materials. Technical parameters are as follows:
Thickness 20um-50um moisture permeability 16000g/㎡ 24hr hydrostatic pressure 10000mm UV resistance 97℉ width: ≤ 1700mm g weight 8-16g/m2
Dankai ePTFE film has excellent moisture permeability, which can transmit the steam discharged from the human body to the microclimate in time, prevent water vapor from condensing into liquid water, and reduce the heat conduction of water
Possibly. Although the surface of the film is dense with a large number of micropores, the wind cannot penetrate, effectively preventing air convection. The test shows that in the wind of 25 m/s, the thermal effect of laminated fabric is
The fruit is 30-40% higher than the traditional down jacket. From 1982 to 1983, Japanese mountaineers wore American Gore-Tex costumes and climbed 8,000-meter-high peaks many times.
The suit withstood the test of climatic conditions of -30 ℃ and wind speed of 30 m/s, and the athletes did not have any frostbite.
By using ePTFE filtration technology to make N95 protective masks, the performance of respiratory protective masks has been improved by leaps and bounds and revolutionary changes. This means greater than 0.2 micro
Any particles of rice, including many kinds of bacteria, cold viruses, etc., are almost completely filtered.
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
Key words:
E-ptfe, mask, with, medium resistance, weather resistance, waterproof, breathable, chemical stability, low friction coefficient
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