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随着生活水平的提高,塑料制品越来越多,特别是日用塑料制品更多,为了适应生活的需要,我们都想知道怎样鉴别塑料品种和粘补方法。 各种塑料部有自己的特殊性能,最简便的鉴别方法是燃烧试验,现分述如下: ① 聚氯乙烯:不易燃,烧时软化,呈黄色火焰,焰边呈绿色,有氯化氢刺激性气味,离火便熄灭。 ② 聚乙烯:易燃,烧时溶融滴落,火焰底部呈蓝色,上端现黄色,有石腊气味,离火能继续燃烧。 ⑧ 酚醛塑料,又叫电木:不易燃,烧时开裂,火焰呈黄色,有火星迸发,有焦木和药皂气味,离火便熄灭。 ④ 脲醛塑料,也叫电玉:不易燃,烧时胀裂发白,火
With the improvement of living standards, more and more plastic products, especially daily plastic products more, in order to meet the needs of life, we all want to know how to identify plastic varieties and sticky method. Various plastics have their own special properties, the most convenient way to identify the combustion test, are as follows: ① PVC: non-flammable, softened when burned, yellow flame, the flame is green, hydrogen chloride irritating odor , Will be extinguished from the fire. ② polyethylene: flammable, when dripping melted when burning, the bottom of the flame was blue, the top is yellow, a stone smell, away from the fire to continue burning. ⑧ Bakelite, also known as Bakelite: non-flammable, cracked when burned, the flame is yellow, sparking out of Mars, with the smell of coke wood and soap, from the fire will be extinguished. ④ Urea-formaldehyde plastic, also known as electric jade: not flammable, white when burning crack, fire