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NY/T 926-2019 天然橡胶初加工机械 撕粒机 Machinery for primary processing of natural rubber—Shredder
本标准规定了天然橡胶初加工机械撕粒机的术语和定义，型号规格和技术参数，技术要求，试验，检验规则，标志、包装、运输、储存等要求。<br />本标准适用于天然橡胶初加工机械撕粒机。...
2023-10-14 00:00:01浏览：21
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ASTM D3194-2017 天然橡胶塑性保持指数(PRI)测试方法 Standard Test Method for Rubber From Natural Sources—Plasticity Retention Index (PRI)
1.1 This test method gives an indication of the oxidation resistance of raw natural rubber at a specified temperature. This resistance is indicated by the Plasticity Retention Index (PRI), a ratio expressed as a percentage of the aged plasticity to the original plasticity determined by means of a parallel plate plastometer. A low PRI value indicates a poor resistance to oxidation. 1.2 The values stated in SI units are to be regarded as the standard. 1.3 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 and health practices and determine the applicability of regulatory limitations prior to use....
2023-05-15 23:36:01浏览：42
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NY/T 3986-2021 天然橡胶初加工机械 切胶机 质量评价技术规范
NY∕T 3986-2021 天然橡胶初加工机械 切胶机 质量评价技术规范...
2023-03-07 03:52:01浏览：23
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