2013-01-05 10:39
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涂层抗石击性检测是对整个涂层体系的力学性能进行的综合评价,能够反映涂层柔韧 性、各层间附着力和配套性的优劣,也是评价涂层二次力学性能极为重要的检测项目之一。国内外 汽车制造商所采用的抗石击性检测方法不统一。介绍了两种常用的涂层抗石击性试验方法及其评价 体系,并分析、比较了各自的优、缺点。
Rubber loses resiliency as temperature goes down. The frozen rubber can't keep its essential characteristics under the temperature below Glass Transition Point. In fact , the rubber applications under severe environments such as vehicle tire in frozen area and aircraft components in the stratosphere are seriously affected. It is a vital importance with the rubber applicants to test low temperature characteristics of vulcanized rubber. Our Gehman's torsion tester is the most popular testing machine for this purpose and is adopted by JIS K6261(Equivalent to ISO 1432)for low temperature testing method of vulcanized rubber. The Model TM-2531 satisfies performance requirements specified by the standard JIS K6261, and equips with the exclusive use frozen machine. It is also designed to perform measurement and data processing in a full automatic for easier operation.
主要特点: ○设定摄影次数、直到结束次数为止连续地自动运转。 ○测定裂痕长度、可选择自动或手动、难以区别的试验片等可以在试验以后进行裂痕长度的修正。 ○鲜明的图像(图像分辨率0.1 ㎜)。 ○画各试验片的S-N曲线、试验结果保存到CSV文件夹里去。 ○试验片安装到夹具时、标准装备有效旋转方向盘。
与金属等弹性体不同,高分子材料是粘弹性体。物质只要施加以作用力,就会变形。金属等弹性体,施以作用力(应力)的同时就会产生变形(应变);相反,对于高分子材料来说,应力和应变不会在同一时间发生。这种关系随着测试样品的成分不同而不同,同时,也对温度、速度以及变形量等有依存性。由于这些差异,高分子材料被广泛应用于各个领域。