The new crown virus epidemic has entered a stage of global spread, and all countries have invested in medical anti-epidemic materials for epidemic prevention and control defense wars. Among them, medical protective clothing, as a battle gown for medical staff and epidemic prevention and control personnel, has become the last external line of defense to prevent viruses from invading the human body.
Medical protective clothing
Medical protective clothing can still provide a certain degree of wearing comfort while ensuring effective isolation of the virus, so as to ensure that medical staff can wear for a long time to work. Among them, the breathability of the protective clothing itself determines the comfort of the medical staff.
Medical protective clothing fabric
The medical protective clothing fabric is a multi-layer composite material, such as a polyethylene/polypropylene spunbond layer and a meltblown non-woven fabric combined with a waterproof vapor permeable film. Among them, the C-position material-the waterproof vapor permeable membrane, depends on the "thin technology" to determine the vapor permeability and moisture permeability of medical protective clothing and the ability of anti-virus penetration.
Protection ability upgrade: from microporous to non-porous breathable film
At present, domestic medical protective clothing mostly adopts PE microporous breathable film. The film forming principle is based on polyethylene resin, adding calcium carbonate for blending. After the film is formed by extrusion, interfacial peeling occurs by directional stretching and then micropores are developed. structure. The microporous structure gives the PE film a certain degree of breathability (moisture); however, because the micropores have the risk of virus penetration, their protective properties are limited.
TPEE non-porous waterproof and moisture-permeable polyester film has excellent moisture permeability and can provide the highest level of virus protection coefficient, meeting the highest level of the American Association for the Advancement of Medical Instruments (AAMI) standard: level 4. It is comfortable to wear and can be used in the operating room, isolation type, and laboratory disposable medical protective clothing.
Thermoplastic polyester elastomer TPEE
Thermoplastic Polyester Elastomer (TPEE) is an engineering plastic material developed by CCP after many years of investment in manpower and material resources. It uses CCP's own technology to produce the best quality and lower cost TPEE for use in the industry. Since 2017, all production capacity will be OEM for DuPont's OEM, and DuPont Bexloy® will be used for external marketing.
TPEE has a number of excellent characteristics and is widely used in electrical appliances, information technology and automobile industries.
Features of DuPont TPEE Bexloy® series:
◆ Excellent heat resistance, the Vicat softening point is 120-200℃, which is the best heat resistance among TPE.
◆ Excellent low-temperature flexibility, cold-resistant to -54℃.
◆ Good mechanical strength and strong properties.
◆ Good resistance to buckling fatigue.
◆ Fast crystallization and easy forming.
◆ Excellent oil and chemical resistance.
◆ Low water absorption and good dimensional stability.
◆ Low friction coefficient and wear resistance.
Application of DuPont TPEE Bexloy® series:
DuPont TPEE Bexloy® series are mainly used in fields that require shock absorption, impact resistance, flexural resistance, sealing and elasticity, oil resistance, chemical resistance, and sufficient strength. Such as: polymer modification, automotive parts, high and low temperature resistant wire sheaths, hydraulic hoses, shoe materials, transmission belts, rotary molded tires, flexible couplings, silencer gears, elevator slides, chemical equipment pipeline valves The anti-corrosion, wear-resistant, high and low temperature materials, etc.