Tips: differences in medical protective clothing fabrics at home and abroad

The difference between domestic and foreign medical protective clothing fabrics, medical protective clothing as a type of chemical protective clothing, it is mainly used for medical personnel to wear, can effectively block the microorganisms, blocking the penetration of body fluids, to prevent the spread of disease work clothes. The GB19082-2009 "Technical Requirements for Medical Disposable Protective Clothing" promulgated by China, provides more detailed technical requirements for medical protective clothing, and stipulates that the medical protective clothing should be in flame retardancy, water dip, charge density, elongation at break and Water resistance and other indicators.

In view of all the current fiber fabrics, it is difficult to meet the standard requirements of waterproof, barrier liquid, so it is inevitable to laminate the fabric, or coating finishing, in order to improve its barrier properties. High-quality medical protective clothing can greatly improve the protection and safety performance of medical personnel, and it can effectively protect against some extremely contagious bacteria and viruses and minimize the harm.

Foreign countries have conducted systematic studies on medical protective fabrics and garments. Most of them currently use PTFE materials and have formulated corresponding standards according to different needs. Polytetrafluoroethylene (PTFE) is a high-performance polymer that has a high water pressure resistance, and at the same time, the micropore can discharge sweat. A suitable pore size PTFE membrane can block bacterial viruses. It has excellent strength, stable properties, good biocompatibility, good thermal stability, and easy molding.

At the same time, in foreign countries, due to different medical needs, there are many researches on the protective clothing of medical personnel carried out, and the standards are strict. At the same time, the protective equipment is available and there is plenty of room for choice.

Compared with foreign countries, China's medical protective clothing fabrics, clothing, there is still a certain gap. From the applied materials can be roughly divided into three types of coating materials, PU | TPU film composites and PTFE microporous membrane composites:

1. Coating material. Most domestic companies use wet or dry polyurethane, polyacrylate, and polyvinylidene fluoride to coat fabrics and then use the fabrics for protective clothing.

2. PU, TPU film composites. The composite material has a certain improvement in moisture permeability and comfort compared with the coating material.

3. PTFE microporous membrane composite material. The domestic military has small batches of equipment in the military apparel of special services, and the application of medical protective clothing is still in the research and trial phase. The PTFE microporous film can effectively solve the two shortcomings of poor durability of coating materials, PU, ​​TPU film composites, and poor moisture permeability. The disadvantage of PTFE is its high cost.

After several years of research, Qingdao Jifa Group has made new breakthroughs in PTFE membrane technology and has become one of the few companies in the world that can produce PTFE membranes. At present, the production line with an annual output of 1.5 million meters is produced by the Group. After nearly a year of experimentation, it has entered the final stage of trial production.

Medical protective clothing fabrics and protective performance not only reflect the technical level of a country, reflect the strength of the country's overall national strength, but also relates to the health and safety of the majority of health care workers and people. For example, the SARS virus that broke out in China and the world in the spring and summer of 2003 threatened the lives of thousands of people. Many medical personnel were infected and even lost their lives. Among these, there is a certain relationship with China's backward protection conditions.

Through the application and development of PTFE membranes, the use of new materials at the forefront of science and technology in protective fabrics, development of high-performance medical protective clothing, improvement of medical protection conditions in China, and substitution of imports will increase the overall level of industrial textiles in China, with Very important significance.