1.1 本规程涵盖了实现和保持温度低于21°C的橡胶热处理和物理测试的一般要求。 1.2 本规程描述了用于橡胶调节和测试的低温柜的可接受类型和结构、传热介质的成分和循环，以及温度控制所需的均匀性和精度。 1.3 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 3.1 在测试之前以及测试期间，通常需要低温来调节橡胶。需要进行调节，以达到整个试样均匀的特定温度，或产生与时间相关的效果。试样可在相同或不同的试验室中进行处理和试验。 3.2 本规程旨在特别但不限于适用于以下ASTM标准:试验方法 D746 , D945 , D1053 , D1229 , D1329 , D1415 , D2136 , D2137 , D2240 , D2632 实践 D832 、和规范 E197 .

1.1 This practice covers the general requirements for achieving and maintaining temperatures below 21°C for thermal conditioning and physical testing of rubber. 1.2 This practice describes the acceptable types and construction of low-temperature cabinets for conditioning and testing of rubber, the composition and circulation of heat-transfer media, and the required uniformity and precision of temperature control. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 3.1 Low temperatures are often needed for conditioning of rubber prior to testing, as well as during the test. Conditioning is required to attain a specific temperature that is uniform throughout the specimen or for producing time-dependent effects. Specimens may be conditioned and tested in the same or different chambers. 3.2 This practice is intended to apply particularly, but not exclusively, to the following ASTM Standards: Test Methods D746 , D945 , D1053 , D1229 , D1329 , D1415 , D2136 , D2137 , D2240 , D2632 , Practice D832 , and Specification E197 .