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烟花化学知识 | 2011-7-23 10:35:00
烟花化学知识
我国有哪些涉及烟花爆竹产品和包装标识的规定?
我国对烟花爆竹产品和包装标识相关法律法规有《中华人民共和国产品质量法》、《产品标识标注规定》、《烟花爆竹安全与质量》。
有关烟花化学知识?
烟花能够广受欢迎,流传至今,得益于它的绚烂多姿,流光溢彩以及在一瞬间爆发又一瞬间消逝带给人们的回味无穷。烟花之所以能够呈现出五颜六色,是因为在烟花的成分中,添加了特殊的元素,在燃烧过程中,这些特殊元素的火焰具有不同的颜色,在合适的控制之下,烟花就会变得五彩斑斓,令人陶醉。
烟花含有各种不同的化学药品,在燃烧时可以给火焰染色。
铜燃烧时,火焰会变成绿色;
硝酸锶、碳酸锶燃烧时,能使火焰变成红色;
硝酸钠、草酸钠燃烧时火焰是黄色;
将硝酸锶和硝酸钠按一定比例混合,燃烧时火焰是桔红色。
只要把这些药品按不同的比例和次序放在烟花里,烟花在燃烧时,便能发出五彩缤纷的光。
鞭炮、烟花 主要成分为硝化纤维,已经加入稳定剂.是传统黑火药3倍的效率.高效.无烟.
爆竹的主要成分是黑火药,含有硫磺、木炭粉、硝酸钾,有的还含有氯酸钾。制作闪光雷、电光炮、烟花炮、彩色焰火时,还要加入镁粉、铁粉、铝粉、锑粉及无机盐。当烟花爆竹点燃后,木炭粉、硫磺粉、金属粉末等在氧化剂的作用下,迅速燃烧,产生二氧化碳、一氧化碳、二氧化硫、一氧化氮、二氧化氮等气体及金属氧化物的粉尘,同时产生大量光和热而引起鞭炮爆炸。纸屑、烟尘及有害气体伴随着响声及火光,四处飞扬,使燃放现场硝烟弥漫,硫氧化物、氮氧化物、碳氧化物等严重污染空气。这些气体对人的呼吸道及眼睛都有刺激作用。
- 上一篇:生产烟花爆竹的企业应当具备的条件
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