碳纤维增强塑料. 压碎物尺寸和形状比的测定

[中文适用范围]： 本国际标准规定了测量碎碳纤维增强塑料（CFRP）的尺寸和长径比的试验方法，特别是用于回收利用的碳纤维增强塑料。 在本国际标准中，将CFRP破碎片的形状视为矩形，并描述了该形状的长边和短边的测量。 它适用于以下平均尺寸的碎片： ——长边长度：5mm至50mm； ——短边宽度：1 毫米至 10 毫米。 本国际标准规定了三种测量方法，两种方法是使用显微镜和天平的手动方法，第三种方法是使用测量仪器的自动方法。 本国际标准涵盖由热固性或热塑性树脂基体获得的粉碎 CFRP。 注：如果粉碎后的CFRP含有大量小碎片和细颗粒，则在测量前应先用1mm筛子筛掉。 [外文原描述]： ISO 30012:2016 specifies test methods for measurement of the size and aspect ratio of crushed carbon-fibre-reinforced plastics (CFRP), especially for recycling purpose. In this International Standard the shape of crushed CFRP, the fragment, is treated as a rectangular shape, and the measurement of the long and short sides of the shape is described. It applies to fragments of the following average dimensions: - length of the long side: 5 mm to 50 mm; - width of the short side: 1 mm to 10 mm. ISO 30012:2016 provides three measuring methods, two methods are manual methods using microscope and scale and the third method is an automatic method using a measuring apparatus. Crushed CFRP obtained from thermosetting or thermoplastic resin matrices are covered by this International Standard. NOTE If the crushed CFRP contain a lot of small fragments and fine particle, it is intended to screen out by a sieve of 1 mm size before the measurement.