| 低温熔融法制备不溶性硫黄试验研究 |
| Experimental Research on Preparation of Insoluble Sulfur with Low-Temperature Melting Method |
| 投稿时间：2016-08-11 修订日期：2016-08-11 |
| DOI： |
| 中文关键词: 低温熔融法 不溶性硫黄 稳定剂 制备 热稳定性 反应转化率 |
| 英文关键词: low-temperature melting method insoluble sulfur stabilizer preparation thermal stability reaction conversion rate |
| 基金项目:中国石化科技开发部项目(113056)。 |
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| 中文摘要: |
| 研究低温熔融法制备不溶性硫黄过程中各因素对反应过程和产物性能的影响。结果表明：不同硫黄原料对反应转化率影响不大，但对产物的热稳定性有明显影响；温度和时间是影响反应转化率最重要的因素，适宜的熔融温度为250 ℃，反应时间为1 h；传统卤素给予体类和烯烃类稳定剂在熔融反应中的应用效果不明显；淬冷过程应用稳定剂碘化钾有利于改善产物的晶型结构；较佳的干燥固化温度为70 ℃，干燥固化时间为8 h；充油过程中应用烯烃类稳定剂MD可抑制产物受热分解，提高产品的热稳定性。 |
| 英文摘要: |
| The effects of various factors on the reaction process and product properties during the preparation of insoluble sulfur by low-temperature melting method were studied.The results showed that the different raw sulfur had little effect on the reaction conversion rate，but had obviously influence on the thermal stability of the product.The reaction temperature and time were the most important effect factors on the reaction conversion rate，the optimum melting temperature was 250 ℃ and the reaction time was 1 h.The conventional halogen donors and olefin stabilizers showed low activity during the melt reaction.The stabilizer KI could improve the crystal degree of the product during quench process.The best drying temperature was 70 ℃，and the drying time was 8 h.In oil-treated process，olefin stabilizer MD could inhibit the thermal decomposition of the product and improve its thermal stability. |
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