| 聚甲醛粉料的储存时间对其热稳定性能影响 |
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| 引用本文： | 白振敏,刘慧宏,董娅佩,籍海明.聚甲醛粉料的储存时间对其热稳定性能影响[J].塑料助剂,2014(3):41-44. |
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| 作者姓名： | 白振敏 刘慧宏 董娅佩 籍海明 |
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| 作者单位： | 中海石油天野化工股份有限公司聚甲醛研究室; |
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| 摘 要： | 试验室模拟聚甲醛粉料在储存罐内的储存条件,进行48 h粉料储存试验。用热重法(TGA)及气相色谱(GPC)研究了不同放置时间粉料的热失重率、重均相对分子质量变化、低分子齐聚物变化及熔融指数(MFR)变化规律。结果表明随着粉料放置时间增加粉料热失重率增加;重均相对分子质量下降;随着粉料放置时间增加低分子齐聚物含量大大增加;但在48 h内,其MFR没有变化。
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| 关 键 词： | 聚甲醛 粉料 储存时间 相对分子质量 热失重率 |
Study on Effect of Storage Time of the Crude POM Powder on It Heat Stability |
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| Bai Zhenmin,Liu Huihong,Dong Yapei,Ji Haiming.Study on Effect of Storage Time of the Crude POM Powder on It Heat Stability[J].Plastic Additives,2014(3):41-44. |
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| Authors: | Bai Zhenmin Liu Huihong Dong Yapei Ji Haiming |
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| Affiliation: | (CNOOC TianYe Chemicals Industry Co. ,Ltd. Hohhot,010070) |
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| Abstract: | A series of simulated experiments were designed to research the heat stability of the ployoxymethylene（POM） powder in the range of 0 ～ 48 h storage time. The change laws of weight loss,Mw,the content of low molecular weight copolymer and the rule of change of its MFR,were investigated by TGA and GPC. The TGA testing results show that heat weight loss of POM is higher with the storage time longer. The GPC testing results showed that the storage time is longer and the Mw is lower and the content of low molecular weight copolymer become much higher. The MFR testing result showed that which is no different within 48 h. |
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| Keywords: | POM crude powder storage time molecular weight heat weight-loss rate |
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