现在越来越流行断桥铝门窗了，但是很多人都不懂为什么要 叫断桥铝门窗呢，听老师傅一分析，算是长见识了！
一般不懂的人真的看不出来，看起来像塑料的又像钢的，表面上看上去跟普通的铝合金没有什么差别的，主要区别就是在“断桥”这一块，断桥就是隔热的意思，因为凡是金属一般都有导热性能的。
如果只单独用铝合金做窗户的话，导热性就很差，夏天不隔热，冬天不保温，这时候安装断桥铝门窗就起着很大的作用，即铝合金中间用树脂、塑料等不易导热的材料分隔并连接 ，形成空腔来降低导热性能，这种工艺就叫做断桥铝。
一般看断桥铝的“断”面，它的横截面为3个空腔，也就是中间是空的，两侧的空腔是铝合金的，中间有一层塑料黑色的隔热带，就是中间的隔热塑料，把室内和室外的热量分离开了，简单来说就是这么理解的。
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