| 生橡胶和胶乳玻璃化转变温度测定国际标准的修订 |
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| 引用本文： | 李晓银,贾慧青,赵慧晖,翟月勤,吴毅.生橡胶和胶乳玻璃化转变温度测定国际标准的修订[J].合成橡胶工业,2022,0(2):91-94. |
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| 作者姓名： | 李晓银 贾慧青 赵慧晖 翟月勤 吴毅 |
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| 作者单位： | 中国石油石油化工研究院 兰州化工研究中心/国家合成橡胶质量检验检测中心， 兰州 730060 |
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| 摘 要： | 以我国行业标准为基础修订ISO 22768∶2017，适用范围扩大到胶乳。考察了试样制备方法、气体流速、升温速率、试样用量等因素对玻璃化转变温度测定结果的影响，建立了方法的精密度。结果表明，选择干燥制样方式，气体流速为20 mL/min，试样用量为5~20 mg，升温速率为20 ℃/min，方法的精密度较好，重复性标准差小于0.30 ℃，再现性标准差小于1.01 ℃。
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| 关 键 词： | 生橡胶 胶乳 玻璃化转变温度 国际标准 重复性 再现性 |
Revision of international standard for determination of glass transition temperature of raw rubber and rubber latex |
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| LI Xiao-yin,JIA Hui-qing,ZHAO Hui-hui,ZHAI Yue-qin,WU Yi.Revision of international standard for determination of glass transition temperature of raw rubber and rubber latex[J].China Synthetic Rubber Industry,2022,0(2):91-94. |
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| Authors: | LI Xiao-yin JIA Hui-qing ZHAO Hui-hui ZHAI Yue-qin WU Yi |
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| Affiliation: | Lanzhou Petrochemical Research Center/National Quality Inspection Testing Center of Synthetic Rubber, Petrochemical Research Institute, PetroChina, Lanzhou 730060, China |
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| Abstract: | Revise ISO 22768∶2017 based on China′s industrial standards, and expand the scope of application to latex. The effects of sample preparation method, gas flow rate, heating rate and sample amount on the determination results of glass transition temperature were investigated, and the precision of the method was established. The results showed that, when the drying method was selected, the gas flow rate was 20 mL/min, the sample amount was 5-20 mg, and the heating rate was 20 ℃/min, the method had good precision, the standard deviation of repeatability was less than 0.30 ℃ and the standard deviation of reproducibility was less than 1.01 ℃. |
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| Keywords: | raw rubber rubber latex glass transition temperature international standard repeatability reproducibility |
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