Thermal Protection And Comfort Evaluation Of Fire - Resistant Garment Based On

Nowdays, fire situation is still grim in our country, fire environment is more severe than ordinary environment. Therefore, it is necessary to pay more attention to the comfortable performance compared to thermal protective performance (TPP). The thesis was put TPP and comfortable performance as the starting point, transitting from high temperature resistant fiber to a combination of four fire service system, realizing from the micro to the macro, single to multi-systemic research. Simulating the four fabric fire service system and selecting the best system with good TPP and comfortable performance. Based on the best system, exploring the impact of location and porosity of the anti-thermal radiation barrier on thermal protective performance of the system.This thesis studied the basic physical properties of PSA fiber and focused on its thermal properties.Using DSC and TG to study the decomposition of PSA. Experiments showed that PSA fiber of initial decomposition temperature was 390.35 ℃,10% weight loss temperaturewas 450.90 ℃, long-term using temperature was 250℃, can be used as fire fiber.The thesis choosed some common fabrics of outer barrier、the moisture barrier and comfort barrier. Outer barrier is made of PSA and Nomex, the moisture barrier is nonwoven fabric with PSA and Nomex, comfort barrier is PSA and flame retardant viscose blended woven fabrics. TPP and comfortable performance were researched.Using needlepunching and spunlacing processes to prepare thermal barriers with 100% PSA. Making thermal barriers with needlepunching 1 time and 2 times, spunlace 1 time and 2 times needlepunching 1 time with spunlace 1 time five kinds of technologies. Air permeability、water vapor transmission rate and clo were characterized as the comprehensive comfort of thermal barriers. Experiments showed comprehensive comfort of thermal barrier prepared by needlepunching process is more excellent compared to spunlacing. The top two thermal barriers were were needling acupuncture 1 time and 2 times.Simulating the four fabric fire service system, and using the mixed orthogonal design experiment. Different systemss of TPP and comfortable performance were studied. Range analysis and variance analysis obtained at 95% confidence level showed that for TPP. outerfabric was significant, the moisture barrier and comfort barrier were not significant. For comfortable performance, thermal barrier was significant, the outer barrier and comfort barrier were not significant.The aluminum foil as the heat radiation barrier was used to enhance the TPP of systems. Drilling the anti-thermal radiation layers with non-woven needle punching machine to improve the air permeability. Research the location and porosity of the thermal radiation barrier with the best TPP. When the anti-thermal radiation layer located between the outer layer and the moisture barrier, the system had the best TPP, and TPP results showed that the porosity was more, the TPP was worse.