改质沥青和中温沥青有什么区别

2025-03-15 17:08:54
推荐回答(2个)
回答1:

中温沥青用于制油毡、建筑物防水层、高级沥青漆等,也是制取沥青焦或延迟焦及改质沥青的原料。可用于制造电极糊、阳极糊粘结剂,炭素制品、耐火材料粘结剂,建筑用的屋顶涂料、防湿剂,也是筑路行业的主要原料。

改质沥青:
改质沥青是以中温沥青为原料制取的。普通中温沥青中苯不溶分BI约为18%,喹啉不溶分QI为6%左右。当此种沥青进行热处理时,沥青中芳烃分子在热缩聚过程中产生氢、甲烷及水。同时沥青中原有的β树脂一部分转化为二次α树脂,苯溶物的一部分转化为β树脂,α成分增长,粘结性增加,沥青得到了改质。这种沥青称为改质沥青。
改质沥青常温下为黑色固体,软化点为110℃

回答2:

改质沥青和中温沥青的区别:软化点,生产工艺,应用途径
改质沥青的软化点一般是105-115°,中温沥青的软化点是70-95°
改质沥青是用中温沥青经过改质,提高沥青的性能形成的沥青,中温沥青是由煤焦油深加工直接提炼出来的沥青。
改质沥青用于生产石墨电极,石墨制品,电解铝厂阳极炭块 预焙阳极等,中温沥青用于生产电极糊,冷捣糊,密闭糊,石墨匣钵,石墨坩埚,防水材料,沥青漆,调烧火油等。

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