ISO 7326:2016 橡胶和塑料软管 静态条件下抗臭氧性能的评定

标准编号：ISO 7326:2016

中文名称：橡胶和塑料软管 静态条件下抗臭氧性能的评定

英文名称：Rubber and plastics hoses — Assessment of ozone resistance under static conditions

发布日期：2016-10

标准范围

ISO 7326:2016规定了五种测定软管外罩耐臭氧性的方法:-方法1，对于直径小于等于25 mm的软管，在软管上进行；-方法2，对于大于25mm的孔径，在软管壁上的试件上进行；-方法3，对于大于25mm的孔径，在盖上的试件上进行；-方法4，对于所有孔径，在软管本身上进行；-方法5，适用于所有孔径，在可膨胀软管上进行，例如纺织品-加强软管。注:对于带有内置配件的软管，如果无法从中取出试样，则可根据ISO 1431-1的要求，在平板上使用硫化到相同程度的适当聚合化合物的测试片来评估耐臭氧性。

ISO 7326:2016 specifies five methods for determining the ozone resistance of the outer covers of hoses:

- method 1, for bore sizes up to and including 25 mm, carried out on the hose itself;

- method 2, for bore sizes greater than 25 mm, carried out on a test piece from the hose wall;

- method 3, for bore sizes greater than 25 mm, carried out on a test piece from the cover;

- method 4, for all bore sizes, carried out on the hose itself;

- method 5, for all bore sizes, carried out on hoses that are expandable, for example textile-reinforced hoses.

NOTE For hoses with built-in fittings from which it is not possible to take test pieces, the ozone resistance can be assessed on slabs in accordance with ISO 1431？1, using test sheets of the appropriate polymeric compound vulcanized to the same degree.

标准预览图