摘要
为了研究氮系阻燃剂的粉尘爆炸特性,选用德国VDI 2263-1-1990、美国ASTM E1226-12a和中国GB/T 16425—1996标准,测试双氰胺、三聚氰胺、氰尿酸三聚氰胺的粉尘可爆性,进一步研究了其爆炸特征参数。试验结果表明:根据VDI 2263-1-1990标准,双氰胺和三聚氰胺为可爆性粉尘,氰尿酸三聚氰胺为不可爆粉尘;根据ASTM E1226-12a和GB/T 16425—1996标准,3种物质均为可爆性粉尘。在粉尘层的最低着火温度测试中,3种物质均未燃烧;在燃烧等级测试中,3种样品均未传播燃烧;按照我国标准,双氰胺、三聚氰胺、氰尿酸三聚氰胺的最小爆炸质量浓度分别为60~70,40~50和40~50 g/m^3,最大爆炸压力分别为0.863,0.776和0.709 MPa,爆炸指数分别为11.41,7.25和6.23(MPa·m)/s,3种氮系阻燃剂的爆炸等级均为St 1。
In this paper,three nitrogen-containing retardant materials were tested in order to study dust explosibility of retardants with VDI 2263-1-1990,ASTM E1226-12a and GB/T 16425-1996 standards.The test results showed that dicyandiamide and melamine were explosible dusts and melamine cyanurate were non-explosible dust based on standard VDI 2263-1-1990.And it also showed that dicyandiamide,melamine and melamine cyanurate were explosible dusts based on standard ASTM E1226-12a and GB/T 16425-1996.Three nitrogen-containing retardant materials were not ignited in the tests of minimum ignition temperature of dust layer,and no fire spread in the test of combustibility behavior.When the ignition energy is 10 kJ,the minimum explosive concentration of dicyandiamide,melamine and melamine cyanurate is 60~70,40~50 and 40~50 g/m^3,the maximum explosion pressure is 0.863,0.776 and 0.709 MPa,and the explosion index is 11.41,7.25 and 6.23(MPa·m)/s respectively.The explosion level of the 3 kinds of nitrogen-containing retardants belongs to St 1.
作者
周健
曾国良
肖秋平
ZHOU Jian;ZENG Guoliang;XIAO Qiuping(Shanghai Chemical Industry Research Institute Co.,Ltd.,Shanghai 200026)
出处
《工业安全与环保》
2018年第7期4-8,24,共6页
Industrial Safety and Environmental Protection
基金
上海市科学技术委员会项目:"工业粉尘爆炸风险预警与防护技术"(16DZ1200800)
"上海化学品公共安全工程技术研究中心"(15DZ2280300)
上海市国资委企业技术创新和能级提升项目:"工业爆炸安全防护
风险评估及处置技术服务平台"(2016006)
关键词
氮系阻燃剂
粉尘爆炸
可爆性判定
点火能量
着火温度
最大爆炸压力
爆炸指数
nitrogen-containing retardant
dust explosion
explosibility screen
energy of ignition
ignition temperature
maximum explosion pressure
explosion index
