Category:heavy

Question:
Bakelite is what constitutes?

Answer:
Bakelite (Bakelite): the surface of hard, brittle and fragile, knock hit a wooden sound, mostly opaque dark (brown or black), in hot water in the same soft.

“Bakelite” the advent of

1905 One day in the German chemist Beier, in the flasks where to do experiments on phenol and formaldehyde was found which generates a sticky thing, he use of water to wash , not wash, use gasoline, alcohol and other organic solvents, or not, which makes Beier a headache, which he tried everything possible to finally put this piece of “annoying” things get down, Beier a sigh of relief to hand, throw it in the waste box.
After a few days, Beier what should waste box is down, when he saw a piece of something, the surface smooth and shiny, there is an attractive luster, Beier curiosity took it out, get the fire barbecue, it is no longer softened, and crashed to the ground, it is not broken, use the saw to saw, it is now being successfully sawing, and keen Beier immediately thought, this may be a kinds of good new material.
through people’s experiments, it was found that it was “disgusting” things, and now it is too “pleasant” the. It is not water seepage, heat is not deformed, there is a certain degree of mechanical strength, ease of processing, but also a very good insulation, which has just emerged for the electrical industry for example, is simply too ideal. As a result, it is widely used to produce gates, light switches, lamp, telephone and other electrical appliances, for which it won the “Bakelite” is the name. Until now, Bakelite is still the most important and the largest production volume, use the most common kind of plastic.

Answer:
is a phenolic resin plus filler made of thermosetting plastics, filler may be starch, hydrated lime powder, cloth, paper, glass fiber, talc or flour.

Chinese:电木是由什么构成的?

类别: 重工业

问题:
电木是由什么构成的?

回答:
酚醛塑料(电木)：表面坚硬，质脆易碎，敲击有木板声，多为不透明深色(棕色或黑色)，在热水中不变软。

“电木”的问世

　　1905年的{yt}，德国化学家贝耶尔，在烧瓶里做关于苯酚和甲醛的实验，发现里面生成了一种粘稠的东西，他用水去洗，洗不掉，改用汽油、酒精等有机溶剂，还是不行，这使贝耶尔伤透了脑筋，后来他想尽千方百计终于把这块“令人讨厌”的东西弄下来了，贝耶尔松了一口气，随手把它丢在废物箱里。
　　过了几天，贝耶尔要把废物箱里的东西倒掉，这时他一眼又看到了那块东西，表面光滑发亮，有一种诱人的光泽，贝耶尔好奇地把它取出来，拿到火上烧烤，它不再变软了，摔在地上，它也不破裂，用锯子来锯，它竟然被顺利地锯开了，敏锐的贝耶尔立即想到，这可能是一种很好的新材料。
　　经过人们的实验，果然发现这曾经“令人讨厌”的东西，现在实在太“讨人喜欢”了。它不渗水，受热不变形，有一定的机械强度，又易于加工，而且还有很好的绝缘性，这对于刚刚兴起的电器工业来说，简直是太理想了。于是，它被广泛地用来生产电闸、电灯开关、灯头、电话机等电器用品，为此才获得了“电木”这个名称。到现在为止，电木仍是最重要、生产量{zd0}、使用最普遍的一种塑料。

回答:
是酚醛树脂加填料制成的热固性塑料，填料可以是淀粉、熟石灰粉、布、纸、玻璃纤维、滑石粉甚至面粉。