To research the dynamic mechanical properties and road performances of flame retardant asphalt mortars and mixtures, four different asphalt mortars/mixtures were prepared: a reference group and three asphalt mortars/m...To research the dynamic mechanical properties and road performances of flame retardant asphalt mortars and mixtures, four different asphalt mortars/mixtures were prepared: a reference group and three asphalt mortars/mixtures containing composite flame retardant materials(M-FRs) of different proportions. Temperature sweep, frequency sweep, repeated creep test, force ductility test and bending beam rheological test were carried out to research the dynamic mechanical properties of asphalt mortars containing M-FRs; wheeltracking test, low-temperature bending test and freeze-thaw split test were used to study the road performances of asphalt mixtures containing M-FRs. The results show that high-temperature performances of the three flame retardant asphalt mortars improve greatly, while low-temperature cracking resistances decline. Both hightemperature performances and water stabilities of asphalt mixtures containing M-FRs are quite good and exceed the specification requirements. However, their low-temperature performances decline in different degrees. In summary, besides their good flame retardancy, the flame retardant asphalt mortars and mixtures also exhibit acceptable road performance.展开更多
文中采用含磷阻燃剂二乙基次膦酸铝改性水性聚氨酯,并通过涂层技术提升涤纶织物的阻燃及防熔滴性。主要探究阻燃剂用量与涂层添加量对织物阻燃效果的影响,并研究阻燃涂层织物的燃烧行为、阻燃性、力学性能及耐水压和光泽度。结果表明,...文中采用含磷阻燃剂二乙基次膦酸铝改性水性聚氨酯,并通过涂层技术提升涤纶织物的阻燃及防熔滴性。主要探究阻燃剂用量与涂层添加量对织物阻燃效果的影响,并研究阻燃涂层织物的燃烧行为、阻燃性、力学性能及耐水压和光泽度。结果表明,当二乙基次膦酸铝用量为2%、涂层为100 g/m2时,织物损毁长度降至12.9 cm,极限氧指数提至28.6%,无熔滴,达B1级阻燃标准,可以有效提高聚氨酯涂层涤纶织物的阻燃性能和防熔滴性能;锥形量热测试表明,最大热释放速率和总烟雾量分别降低24.9%和69.3%,同时,阻燃涂层织物保持良好的力学性能,耐静水压值为52.3 k Pa。展开更多
基金Funded by the National Key Technology R&D Program for the 12th Five-Year Plan(No.2011BAE27B04)
文摘To research the dynamic mechanical properties and road performances of flame retardant asphalt mortars and mixtures, four different asphalt mortars/mixtures were prepared: a reference group and three asphalt mortars/mixtures containing composite flame retardant materials(M-FRs) of different proportions. Temperature sweep, frequency sweep, repeated creep test, force ductility test and bending beam rheological test were carried out to research the dynamic mechanical properties of asphalt mortars containing M-FRs; wheeltracking test, low-temperature bending test and freeze-thaw split test were used to study the road performances of asphalt mixtures containing M-FRs. The results show that high-temperature performances of the three flame retardant asphalt mortars improve greatly, while low-temperature cracking resistances decline. Both hightemperature performances and water stabilities of asphalt mixtures containing M-FRs are quite good and exceed the specification requirements. However, their low-temperature performances decline in different degrees. In summary, besides their good flame retardancy, the flame retardant asphalt mortars and mixtures also exhibit acceptable road performance.
文摘文中采用含磷阻燃剂二乙基次膦酸铝改性水性聚氨酯,并通过涂层技术提升涤纶织物的阻燃及防熔滴性。主要探究阻燃剂用量与涂层添加量对织物阻燃效果的影响,并研究阻燃涂层织物的燃烧行为、阻燃性、力学性能及耐水压和光泽度。结果表明,当二乙基次膦酸铝用量为2%、涂层为100 g/m2时,织物损毁长度降至12.9 cm,极限氧指数提至28.6%,无熔滴,达B1级阻燃标准,可以有效提高聚氨酯涂层涤纶织物的阻燃性能和防熔滴性能;锥形量热测试表明,最大热释放速率和总烟雾量分别降低24.9%和69.3%,同时,阻燃涂层织物保持良好的力学性能,耐静水压值为52.3 k Pa。
