亚克力的机械强度怎么样？

Published:

2020-09-28

        有机玻璃（亚克力）的机械强度相对还算比较高。有机玻璃的相对分子质量大约为200万，是长链的高分子化合物，而且形成分子的链很柔软，因此，有机玻璃的强度比较高，抗拉伸和抗冲击的能力比普通玻璃高7-18倍。有一种经过加热和拉伸处理过的有机玻璃，其中的分子链段排列得非常有次序，使材料的韧性有显著提高。用钉子钉进这种有机玻璃，即使钉子穿透了，有机玻璃上也不产生裂纹。这种有机玻璃被子弹击穿后同样不会破成碎片。

　　1.各向同性：均质玻璃在各个方向的性质如折射率、硬度、弹性模量、热膨胀系数等性能相同。

　　2.介稳性：当熔体冷却成玻璃体时，它能在较低温度下保留高温时的结构而不变化。

　　3.可逆渐变性：熔融态向玻璃态转化是可逆和渐变的。

　　4.连续性：熔融态向玻璃态转变时物理化学性质随温度变化是连续的。拉伸处理的有机玻璃可用作防弹玻璃，也用作军用飞机上的座舱盖。

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