Fabric Class | Epidemic Prevention and Control! Pay attention to the special features of medical protective clothing fabrics
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Medical protective clothing is a type of chemical protective clothing. It is mainly used by medical staff as work clothing that can effectively block microorganisms, block the penetration of body fluids, and prevent disease transmission. The GB19082-2009 “Technical Requirements for Medical Disposable Protective Clothing” promulgated by our country puts forward more detailed technical requirements for medical protective clothing. It stipulates that medical protective clothing should have flame retardant performance, water level, charge density, elongation at break and Water resistance and other indicators.
Looking at all current fiber fabrics, it is difficult to achieve the waterproof and liquid barrier properties required by the standards. Therefore, it is inevitable to laminate the fabric or perform coating finishing to improve its particle barrier performance. High-quality medical protective clothing can greatly improve the protective safety performance of medical staff. It can effectively protect against some highly infectious bacteria and viruses and minimize the harm.
There have been many systematic studies on medical protective fabrics and clothing abroad. Currently, most of them use polytetrafluoroethylene (PTFE), and corresponding standards have been formulated according to different needs. Polytetrafluoroethylene (PTFE) is a high-performance polymer with high water pressure resistance, and its micropores can smoothly discharge sweat vapor. A PTFE membrane with appropriate pore size can block bacteria and viruses. It has excellent strength, stable properties, good biocompatibility, good thermal stability, and easy to form.
At the same time, in foreign countries, there are many studies on protective clothing for medical personnel based on different medical needs, and the standards are strict. At the same time, protective equipment is available, and there is a large range of choices.
my country’s medical protective clothing fabrics and clothing can be roughly divided into three types from the materials used: coating materials, PU|TPU membrane composite materials and PTFE microporous membrane composite materials:
1. Coating material. Most domestic companies use wet or dry polyurethane, polyacrylate, and polyvinylidene fluoride to coat and finish fabrics, and then use the fabrics to make protective clothing.
2.PU, TPU film composite materials. This composite material has certain improvements in moisture permeability and comfort compared with coated materials.
3.PTFE microporous membrane composite material. The domestic army has small batch applications in military equipment for special services, and its application in medical protective clothing is still in the research and trial stage. PTFE microporous film can effectively solve the two shortcomings of poor durability and unsatisfactory moisture permeability of coating materials, PU, and TPU membrane composite materials. The disadvantage of PTFE is its high cost.
After several years of research, Qingdao Jifa Group has made new breakthroughs in PTFE membrane drawing technology and has become one of the few companies in the world that can produce PTFE membranes. At present, Jifa Group’s production line with an annual output of 1.5 million meters has entered the post-trial production stage after nearly a year of experiments.
The fabric and protective performance of medical protective clothing not only reflect a country’s technical level and the country’s comprehensive national strength, but are also related to the lives, health and safety of medical workers and people. For example, the SARS virus broke out in my country and other large areas in the spring and summer of 2003, threatening the lives of thousands of people. Many medical staff were infected and even lost their lives. This has a certain relationship with the backward protection conditions in our country.
By applying and developing PTFE membranes, applying new materials at the forefront of science and technology to protective fabrics, developing high-performance medical protective clothing, improving my country’s medical protection conditions, and replacing imports, it will help improve the overall quality of my country’s industrial textiles. level is of great significance.
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