Insulated protective clothing refers to protective clothing worn in high-temperature environments that can promote the dissipation of human body heat and prevent heatstroke, burns and burns. Therefore, it must be flame retardant, liquid-repellent, and have no melting droplets when burning. It can maintain the integrity and wearing comfort of clothing when exposed to heat.
Thermal protective clothing can be divided into the following types according to different use temperatures:
Fire protection clothing>1000℃
High temperature protective clothing<200℃
Fire insulation clothing>800℃
Industrial thermal insulation clothing<800℃
Firefighter fire extinguishing suit<200℃
Misunderstandings in choosing thermal protective clothing
A) Treat industrial insulation clothing as fire insulation clothing
The fabric safety performance of industrial insulation clothing is generally lower than that of fire insulation clothing. It uses composite aluminum foil on glass fiber, which is easy to fall off after use and has low thermal radiation reflectivity (>70%). The base material of fire insulation clothing is usually aramid high-temperature resistant material, and the surface aluminum foil is sprayed onto the base material at high speed. The surface is smooth, not easy to fall off, and the heat radiation reflection efficiency is high (>90%). The mirror of the window is different. The mirror of fire insulation clothing is made of gold-plated glass, with a heat radiation reflectivity of >95%. Industrial heat insulation clothing usually uses chrome-plated glass. Masks or polyester transparent masks cannot well reflect heat radiation greater than 500 degrees, which can easily cause burns to the eyes and face.
B) Use thermal insulation clothing as fire protection clothing
The style of the heat-insulating suit can be the same as the fire-proof suit, but the insulating suit cannot come into contact with flames and cannot enter the fire scene. Otherwise, the garment will be damaged.
C) Confusion between thermal insulation clothing and fire and chemical protective clothing
Thermal insulation clothing is not suitable for firefighters to wear when working with radioactive substances, biological substances and hazardous chemicals during fire fighting and rescue operations. The function of insulating clothing is to insulate heat. More than 70% of the radiant heat from the fire source is reflected, and the remaining heat is blocked from the outside through the insulation layer. The temperature rise inside the packaged clothing is not more than 25 degrees.
D) Confusing high-temperature protective clothing and insulating clothing
The difference between insulating clothing and high-temperature protective clothing mainly lies in the difference in ambient temperature and fire source.
“The reflective heat radiation effect of high-temperature protective clothing is poor. Insulating clothing can generally reflect 70% of thermal radiation. High-temperature protective clothing is mainly used in environments where the ambient temperature is within 300 degrees. Insulating clothing is mainly used in environments above 300 degrees. temperature, or where there is splashing of molten metal. “
The outer material of fire-proof and chemical-proof clothing is aluminum foil, and the inner layer is chemical-proof and flame-retardant material. It has a certain ability to reflect radiant heat, but it still cannot be used as heat-insulating clothing. In a high-heat environment, its chemical resistance will be greatly degraded.
Fire-resistant and chemical-proof clothing is mainly designed to protect against chemical disasters. It cannot insulate the heat of the fire source and only has the ability to protect against the heat of flash fires. Mainly used in hazardous environments with flammable chemicals. 9c778fmVz
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