| HG/T 3061—2009《橡胶配合剂 沉淀水合二氧化硅》修订建议 |
| Revision Proposal for HG/T 3061—2009 Rubber Compounding Ingredients—Silica，Precipitated，Hydrated |
| 投稿时间：2019-10-15 修订日期：2019-10-15 |
| DOI：10.12136/j.issn.1000-890X.2021.07.0546 |
| 中文关键词: 二氧化硅 含量 拉断伸长率 标准 修订建议 |
| 英文关键词: silica content elongation at break standard revision proposal |
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| 中文摘要: |
| 针对HG/T 3061—2009《橡胶配合剂 沉淀水合二氧化硅》中二氧化硅含量和胶料拉断伸长率指标值以及在水合二氧化硅（白炭黑）胶料物理性能测试中使用标准参比白炭黑提出了一些具体的修订建议。分析认为：现行ISO 5794-1：2010在我国应用时其白炭黑的二氧化硅（灼品）质量分数指标上限偏小（0. 97），适宜值为0. 98；现行HG/T 3061—
2009的白炭黑胶料拉断伸长率的A类指标（测试值法）偏大（550%），建议调整为520%。通过代表性白炭黑生产企业对白炭黑产品的质量判定表明，白炭黑胶料物理性能的B类指标（差值法）和C类指标（比值法）测试因为采用了标准参比白炭黑，这两类指标较A类指标更科学、更合理，更具质量控制和工艺指导意义，值得大力推行。 |
| 英文摘要: |
| The revision proposal for the chemical industry standard，HG/T 3061—2009 rubber compounding ingredients—silica，precipitated，hydrated was presented. Specifically，revisions on the silica content of sample，the elongation at break of the silica filled compound，and the use of standard reference silica in the physical property test of hydrated silica，were discussed. The upper limit of the mass fraction of silica in the burning sample in the international standard ISO 5794-1 was currently applied in China，which was 0. 97. It was considered relatively small and appropriate value was recommended at 0. 98 in the revision
proposal. The class A index（test value method） of the elongation at break of the existing HG/T 3061—2009 silica filled compound was too large（550%），and it was recommended to adjust it to 520%. Based on the experience of the quality control of silica products by various representative silica manufacturers，it showed that the class B index（differential value method） and class C index（ratio method） of the physical properties of the silica filled compound were more scientifically based and more reasonable than class A index because of the use of standard reference silica. Therefore，they had more significance of quality control and process guidance，and were worthy of vigorous implementation. |
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