How about the penetration resistance and penetration resistance of chemical protective clothing?
Release time:
2022-03-23
Although various performance requests and test methods in the three standard systems are different, they all have rules for blocking toxic chemicals, physical and mechanical properties, and warmth of chemical fire protection clothing. They all contain rules for blocking toxic chemicals, physical and mechanical properties, and warmth. For the protection of toxic chemicals, the main thought is the penetration resistance and penetration resistance of each chemical substance. Penetration refers to the phenomenon that chemical substances penetrate through the zippers and seams of protective clothing during the taking process of protective equipment.
Although various performance requests and test methods in the three standard systems are different, they all have rules for blocking toxic chemicals, physical and mechanical properties, and warmth of chemical fire protection clothing. They all contain rules for blocking toxic chemicals, physical and mechanical properties, and warmth. For the protection of toxic chemicals, the main thought is the penetration resistance and penetration resistance of each chemical substance. Penetration refers to the phenomenon that chemical substances penetrate through the zippers and seams of protective clothing during the taking process of protective equipment.
It can be seen that the entire penetration process is a process visible to the naked eye. Penetration is not only related to the structure of the data, the gap between the fibers, the lyophile of the data, but also the design of the garment, the way of seams, and the choice of accessories. Soaking refers to the process of chemical substances dissolving in protective clothing materials or chemical substances penetrating protective clothing materials in the way of molecular movement. That is, the molecules are first adsorbed on the interface, then reach the other side of the data through molecular motion, and finally revealed by desorption.
Unlike penetration, in many cases there is no visible sign of chemical saturation. Due to the great difference between the molecular size of droplets and chemical substances, the external pore size of the data that droplets cannot pass through is easy for molecules, so the data with good penetration resistance index must have good penetration resistance. It has good anti-infiltration performance for Class A chemicals and may be poor for Class B chemicals. In addition, the structure of the data itself is an important element of the resolution of anti infiltration. Due to the limited anti-soak performance of the single-layer structure, some high-grade protective fabrics use multiple protective film structures. The demand points out that at present, there is no effective wrist to absolutely block this kind of infiltration phenomenon caused by molecular diffusion, and no matter how good the protective data is, it can only slow down the speed of diffusion.
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