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Apenas um resultado

测试材料

ASTM D1922 主要针对塑料薄膜和非刚性片材,如聚乙烯、聚丙烯等常见塑料薄膜,以及一些具有一定柔韧性的薄板材料等仪器

测试流程

首先,使用规定的刀具从待测材料中裁取规定尺寸的试样,如矩形试样或具有恒定半径试验长度的试样。将试样安装在 Elmendorf 型撕裂测试仪的夹具上,确保试样一端被夹紧,另一端自由悬挂或固定于另一夹具上。然后对试样施加一定的预加载力,以消除试样与夹具之间的间隙和松弛。启动测试设备,以恒定速度对试样施加拉力,直至试样撕裂,记录撕裂过程中的最大力值。

测试结果解读

测试结果通常以撕裂开始后通过指定长度的塑料薄膜或非刚性片材传播撕裂的平均力来表示,单位为牛顿。力值越大,表明材料的抗撕裂传播性能越好。若测试结果符合相关标准要求,则说明材料在实际使用过程中抵抗撕裂破坏的能力较强,能够满足相应的应用需求;反之,则可能需要对材料进行改进或更换。