GB/T 18013-2008 in English

《GB/T 18013-2008天然生胶 加速贮存硬化值的测定》由TC35（全国橡胶与橡胶制品标准化技术委员会）归口，TC35SC8（全国橡胶与橡胶制品标准化技术委员会天然橡胶分会）执行，主管部门为中国石油和化学工业联合会。
本标准于１９９９年１１月首次发布。本标准代替ＧＢ／Ｔ１８０１３―１９９９《天然生胶　加速贮存硬化值的测定》。本标准规定了用快速塑性计和门尼粘度计测定天然生胶加速贮存硬化值的方法。本标准适用于具有恒粘特性的天然生胶品种性能的评价。本标准与ＧＢ／Ｔ１８０１３―１９９９相比主要差异如下：
―――增加了第二法：门尼黏度计法；
―――本标准作了编辑性修改。

Scope

WARNING: Personnel using this standard should have practical experience in a formal laboratory. This standard does not address all possible safety issues. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations. This standard specifies the method for determining the accelerated storage hardening value of natural raw rubber with rapid plasticity meter and Mooney viscometer. This standard applies to the performance evaluation of natural rubber varieties with constant viscosity properties.