Development Status and Latest Research Progress of Ventilated P

• Posted by Lacy Lacy March 5, 2023 - Filed in Arts & Culture - 325 views

  Original Title: Development Status and Latest Research Progress of Breathable Antitoxic Clothing (1) Breathable protective clothing is a kind of skin protective equipment used by soldiers and civilians, which can penetrate air and moisture, but can prevent toxic gases, fog droplets, bacteria and radioactive dust from harming the human body. It has many functions, such as anti-poison, ventilation, heat dissipation, high temperature resistance, flame retardant, anti-reconnaissance camouflage and so on, so that the physiological performance of the human body has been significantly improved. Early breathable antitoxic clothing originated in the United States in the 1920s, when the United States Army used chlorinated paraffin to soak disinfectants on military uniforms, forming absorptive protective suit that could react with toxic agents and eliminate them, but the protective suit had a strong selectivity for the adsorption of toxic agents, and chloramide itself had a certain stimulating effect on the skin. It also has a certain corrosive effect on fabrics, thus affecting the service life of clothing. After nearly a century of development, there have been relatively mature breathable gas suits in various countries, most of which are made of activated carbon adsorption materials, but these adsorption materials also have some problems, such as no selective adsorption, poor protection against large droplets of toxic agents, and easy to produce secondary pollution. Therefore,Antivirus Disposable Mask with CE Certificate, in recent years, various countries have been committed to the development of new materials and new technologies. In this paper, the types, materials and properties of breathable gas protective clothing produced by different countries were summarized, the development process of breathable gas protective clothing in China was summarized, and the latest research progress of several new materials and new technologies in the field of breathable protective clothing was introduced, which provided a constructive reference for the development of multi-functional, high-performance and comfortable protective equipment in China in the future. Development status of breathable gas protective clothing in developed countries Development status of breathable gas protective clothing in developed countries At present, the technology of breathable gas suit is mainly concentrated in Britain,CE Certificate KN95 Mask, the United States, Germany, France and other developed countries. The protective material produced by Germany's BL BLÜCHER Company based on "Saratoga (Saratoga) Spherical Activated Carbon Patent Technology" is recognized as the world's most advanced breathable protective clothing fabric. The spherical activated carbon composite fabric has good mechanical properties, good air permeability and heat dissipation, excellent protective performance and low heat stress due to the hardness of the spherical activated carbon, the bonding technology and the comprehensive performance of the fabric material; and meanwhile, the unique bonding technology of the spherical activated carbon and the fabric can retain about 85% of effective adsorption of the activated carbon. The outer layer is made of high flame retardant cotton fabric with water and oil repellency finishing, and the inner layer is made of active carbon with a diameter of 0.5 to 1 mm, which is adhered to the fabric in a dotted manner. The fabric can be polyamide fabric, polyester fabric or cotton fabric. Expand the full text Protective suit with Saratoga technology. The Joint Service Lightweight Integrated Protective Suit (JSLIST) has a two-piece design. Its outer layer is made of waterproof, tear-resistant nylon and cotton silk blended fabric. The lining material is based on the German SARATOGA technology. The protective suit is small in size, light in weight and high in durability. It can provide unparalleled protection against biological and chemical agents. United States Joint Service Light Integrated protective suit. There are many technologies of breathable gas suit in Britain, and the products produced by different manufacturers are used by different arms in different regions and organizations of the world. One of the most famous is the ZORFLEX activated carbon cloth technology of British ChemvironCarbon Company, which has the characteristics of light weight, excellent washing resistance, low physiological load and renewable. Carbon cloth can be compounded with many kinds of fabrics because of its excellent mechanical properties. The NBC protective suit has the same physiological comfort as the ordinary combat uniform, Medical Quickly Delivery Antivirus Coverall ,KN95 Face Mask, which uses activated carbon fiber and polyester fabric, polyamide fabric or cotton fabric after flame retardant and other post-treatment to achieve the purpose of preventing the infiltration of toxic agents, and at the same time, it has flame retardant, water repellency, oil repellency, camouflage and other properties. Polymer coated activated carbon (PEAC) technology in the United States is a more advanced technology, represented by Lanx Type I fabric, whose outer layer is composed of nylon, cotton or blended fabric. The greatest advantage of this protective suit is that it is comfortable to wear, and its carbon particles have strict uniform size and good adsorption performance. Lanx Type I fabrics offer protection against a wide range of toxic gases and liquids, and are durable, breathable, flame retardant, soft and comfortable with low thermal load. At the same time, this series of fabrics have good flashover protection performance, which can be used in explosion-proof clothing to provide NBC safety protection. Development Status of Ventilating Antitoxic Garment in China Development Status of Ventilating Antitoxic Garment in China The early research on chemical defense equipment materials in China mainly focused on special flannelette containing activated carbon slurry and chemically impregnated carbon. Figure a shows China's 82 type breathable protective suit (also known as FFF01 type gas suit), which is the earliest breathable gas suit developed in China. The protective suit is made of fiber cotton cloth with waterproof treatment, and the inner layer is a special flannelette containing activated carbon. The protective suit can be worn continuously for 8 H at 25 ℃ and for 4 H at 35 ℃ without adverse effect on heat dissipation. It has similar protective performance and air permeability with MKG III protective suit in Britain and 77 carbon fiber protective suit in Taiwan, China. Due to the defects of FFF01 gas suit in camouflage and flame retardant, China developed FFF02 gas suit in 1994. Its outer layer material is soaked in special silicone oil, which has certain flame retardant performance, as shown in Figure B. The technology of carbon-doped fiber anti-gas suit with independent intellectual property rights developed by Beijing Bangwei Hi-Tech Special Textiles Co., Ltd. in cooperation with the Institute of Chemical Defense is the first in the world, and its key technical indicators have reached the advanced level in the world. The inner layer material of gas protective clothing made of carbon fiber has the characteristics of light weight, good hand feeling, superior gas protective performance and low cost, and has certain flame retardant performance. The comprehensive protective performance, air permeability and wearing comfort of the carbon-doped fiber gas protective clothing are far superior to those of the carbon-sprayed fabric, and the carbon-doped fiber gas protective clothing technology solves the problems of easy shedding of activated carbon, poor physiological comfort and the like of the traditional gas protective clothing. The inner layer is made of active carbon powder which is mixed into the spinning solution of the acrylonitrile-polyvinyl chloride fiber through the processes of spinning, spinning, weaving, etc. Compared with FFF02 type gas protective clothing, the gas protective clothing of the invention is greatly improved in air permeability and softness. Compared with the mainstream SARATOGA and ZORFLEX materials in the world, it has great cost advantages while meeting the anti-virus performance. Generally speaking, in recent years, the permeability, softness, comfort and protective performance of breathable gas suits in China have been improved, especially the breathable gas suits with activated carbon fiber cloth or felt as adsorption layer. In recent years, relevant units in China have carried out research on activated carbon fiber composite fabrics. For example, the activated carbon fiber composite fabric developed by Jiangsu Tongkang Carbon Fiber Science and Technology Group is made of viscose-based activated carbon fiber cloth or felt as an adsorption layer and cotton fabric. The fabric has high adsorption performance, light weight and good anti-toxic effect, and has been used by the Pakistani army; The activated carbon fiber composite fabric developed by Shanghai Tianxiang Textile Technology Co., Ltd. has high tensile strength and washability. The active carbon fiber composite fabric prepared by taking 100% polyacrylonitrile-based active carbon fiber cloth as an adsorption layer and cotton cloth, non-woven fabrics or chemical fiber cloth as base cloth in a laminating mode has the effects of comfort, moisture permeability, air permeability, small physiological load, flame retardancy, heat radiation and nuclear fallout resistance,Full Body Disposable Coverall, purification, regeneration and the like, and can also prolong the time of battlefield activities. Return to Sohu to see more Responsible Editor:. zjyuan-group.com