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ISO 1431-1-2004标准介绍
ISO 1431-1是关于《塑胶、硫化橡胶或热塑性橡胶耐臭氧龟裂》的测试方法，现行近的标准为ISO 1431-1-2012，
ISO 1431标准范围
ISO 1431这部分指定用于评估在静态或动态拉伸条件下和温度中，暴露于含有一定浓度的臭氧的空气中抗硫化橡胶或热塑性橡胶开裂时的程序，排除直接光照的影响。
主要注意的是由于不同的橡胶制品的耐臭氧性能在不同的环境下，会有比较为显著的不同，例如臭氧浓度和温度的影响。此外由于实际使用中的产品尺寸规格与测试中的样品不一致，也可能造成测试结果与实际使用过程中出现形变的不一致。因此标准的是使用者需谨慎在测试结果与实际使用过程的相关性进行评估。
附录A.对臭氧裂解的性质进行了说明。
ISO 1431-3对测定臭氧浓度的参考和替代方法进行了描述。
ISO 1431英文摘录
WARNING — Persons using this part of ISO 1431 should be familiar with normal laboratory practice.This part of ISO 1431 does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and toensure compliance with any national regulatory conditions.
1 Scope
This part of ISO 1431 specifies procedures intended for use in estimating the resistance of vulcanized or thermoplastic rubbers to cracking when exposed, under static or dynamic tensile strain, to air containing a definite concentration of ozone and at a definite temperature in circumstances that exclude the effects of direct light.
Great caution is necessary in attempting to relate standard test results to service performance since the relative ozone resistance of different rubbers can vary markedly depending on the conditions, especially ozone concentration and temperature. In addition, tests are carried out on thin test pieces deformed in tension and the significance of attack for articles in service can be quite different owing to the effects of size and of the type and magnitude of the deformation. Explanatory notes on the nature of ozone cracking are given in Annex A.
Reference and alternative methods for determining the ozone concentration are described in ISO 1431-3.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 1431-3, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 3: Reference and alternative methods for determining the ozone concentration in laboratory test chambers
ISO 23529, Rubber — General procedures for preparing and conditioning test pieces for physical test methods
▼ISO 1431-1-2004第三方检测机构
ISO 1431-1-2004PDF资料
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