ISO 6603-2:2023 塑料 硬质塑料穿刺冲击性能的测定 第2部分：仪器冲击试验

标准编号：ISO 6603-2:2023

中文名称：塑料 硬质塑料穿刺冲击性能的测定 第2部分：仪器冲击试验

英文名称：Plastics — Determination of puncture impact behaviour of rigid plastics — Part 2: Instrumented impact testing

发布日期：2023-06

标准范围

本文件规定了一种使用测量力和挠度的仪器测定扁平试样形式的刚性塑料的穿刺冲击性能的试验方法。如果需要在标称恒定撞击速度下记录的力-挠度或力-时间图对于详细表征撞击行为是必要的，则该图适用。试验方法适用于厚度在1？毫米到4？嗯。该方法适用于以下类型的材料:—？刚性热塑性模制和挤出材料，包括填充的、未填充的和增强的化合物和片材；—？刚性热固性模制和挤出材料，包括填充和增强的化合物、片材和层压材料；—？纤维增强热固性和热塑性复合材料，包括单向或多向-定向增强材料，如垫、机织物、机织物粗纱、短切线、组合和混合增强材料、粗纱、碾磨纤维和由预浸渍材料（预浸料）制成的片材。该方法也适用于由成品、层压板和挤出或铸造片材模制或机加工的样品。只有当试样的制备条件、尺寸和表面以及试验条件相同时，试验结果才具有可比性。特别是，在不同厚度试样上测定的结果不能相互比较（见附录？E）。对冲击应力的反应的综合评估可以通过对不同材料变量（例如结晶度和水分含量）进行作为冲击速度和温度的函数的测定来获得。成品的冲击行为不能直接从该试验中预测，但可以从成品（见上文）中提取样品，通过该方法进行试验。通过该方法开发的测试数据不用于设计计算。然而，关于材料典型行为的信息可以通过在不同温度和冲击速度下进行测试（见附件？D）通过改变厚度（见附件？E）和通过测试在不同条件下制备的样品来获得。本文档的目的不是解释发生在力-挠度图的每个特定点上的机制。这些解释是科学研究的任务。

This document specifies a test method for the determination of puncture impact properties of rigid plastics, in the form of flat specimens, using instruments for measuring force and deflection. It is applicable if a force-deflection or force-time diagram, recorded at nominal constant striker velocity, is necessary for detailed characterization of the impact behaviour.

The test method is applicable to specimens with a thickness between 1 mm to 4 mm.

The method is suitable for use with the following types of material:

—    rigid thermoplastic moulding and extrusion materials, including filled, unfilled and reinforced compounds and sheets;

—    rigid thermosetting moulding and extrusion materials, including filled and reinforced compounds, sheets and laminates;

—    fibre-reinforced thermoset and thermoplastic composites incorporating unidirectional or multi-directional reinforcements such as mats, woven fabrics, woven rovings, chopped strands, combination and hybrid reinforcements, rovings, milled fibres and sheets made from pre-impregnated materials (prepregs).

The method is also applicable to specimens which are either moulded or machined from finished products, laminates and extruded or cast sheet.

The test results are comparable only if the conditions of preparation of the specimens, their dimensions and surfaces as well as the test conditions are the same. In particular, results determined on specimens of different thickness cannot be compared with one another (see Annex E). Comprehensive evaluation of the reaction to impact stress can be obtained by determinations made as a function of impact velocity and temperature for different material variables, such as crystallinity and moisture content.

The impact behaviour of finished products cannot be predicted directly from this test, but specimens may be taken from finished products (see above) for tests by this method.

Test data developed by this method is not intended to be used for design calculations. However, information on the typical behaviour of the material can be obtained by testing at different temperatures and impact velocities (see Annex D) by varying the thickness (see Annex E) and by testing specimens prepared under different conditions.

It is not the purpose of this document to give an interpretation of the mechanism occurring on every particular point of the force-deflection diagram. These interpretations are a task for scientific research.

标准预览图