ISO 7765-2:2022 塑料薄膜和薄板 用自由落镖法测定耐冲击性 第2部分：仪器化穿刺试验

标准编号：ISO 7765-2:2022

中文名称：塑料薄膜和薄板 用自由落镖法测定耐冲击性 第2部分：仪器化穿刺试验

英文名称：Plastics film and sheeting — Determination of impact resistance by the free-falling dart method — Part 2: Instrumented puncture test

发布日期：2022-05

标准范围

本文件规定了使用测量力和挠度的仪器测定塑料薄膜刺穿冲击性能的试验方法。如果需要在标称恒定冲击器速度下记录的力-挠度或力-时间图来详细描述冲击行为，则该方法适用。当有少量试样可用，且ISO 7765-1中描述的阶梯法无法应用时，也需要该试验方法。该测试方法适用于小于等于1毫米厚度，可以比较薄膜的冲击穿透力、双轴变形能力和能量吸收能力。此外，可以通过改变温度或渗透速度或相对湿度来确定测试条件下薄膜脆性和韧性行为之间的过渡区。

This document specifies a test method for the determination of puncture impact properties of a plastic film using instruments for measuring force and deflection. It is applicable if a force-deflection or force-time diagram, recorded at nominally constant striker velocity, is required for detailed characterization of the impact behaviour. This test method is also required when a small number of test specimens are available, and the staircase method described in the ISO 7765-1 cannot be applied.The test method is applicable to films of up to 1 mm thickness and makes it possible to compare impact-penetration forces, biaxial deformabilities and energy-absorption capacities of films. Also, the transition region between brittle and tough behaviour of the film under the conditions of testing can be determined by varying the temperature or the penetration velocity or the relative humidity^[1].

标准预览图