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文章编号： 1672-6987（2024）05-0112-07； DOI： 10.16351/j.1672-6987.2024.05.015
史浩楠， 赵永健， 温新龙， 史新妍*（青岛科技大学 高分子科学与工程学院; 橡塑材料与工程教育部重点实验室， 山东 青岛 266042）
摘要： 选用极性与饱和度不同的天然橡胶（NR）、丁腈橡胶（NBR）、三元乙丙橡胶（EPDM）、活氯型丙烯酸酯（ACM）4种橡胶为基体胶，炭黑N550用量采用0、10、30、50、70份，使用差示扫描量热仪（DSC）、低温回缩试验仪、低温脆性试验机对不同用量炭黑填充硫化胶低温性能进行表征，3种测试仪器表征的低温性能分别是玻璃化转变温度(Tg)，回缩10%对应温度(TR10)以及脆性温度(Tb)。结果表明，极性胶NBR、ACM的Tg、TR10随炭黑用量增加变化幅度较大，而非极性胶NR、EPDM的Tg、TR10变化较小，与结合胶含量成正相关；虽然NBR和ACM存在饱和性差异，但两者的Tg、TR10变化幅度相近。同样的，NR和EPDM也表现出相同规律，说明橡胶的饱和性对橡胶的Tg与TR10影响无关联。炭黑填充量对橡胶Tb的影响规律因橡胶种类的差异而表现出多元化，与结合胶含量无关，且与橡胶的极性和饱和性不存在明显的关系，其中EPDM橡胶表现出了最低的脆性温度，且远低于其Tg。
关键词： 橡胶； 玻璃化转变温度； 低温回缩温度； 低温脆性温度
中图分类号： TQ 330.7文献标志码： A
引用格式： 史浩楠， 赵永健， 温新龙， 等. 炭黑用量对不同橡胶低温性能的影响（I）［J］. 青岛科技大学学报(自然科学版), 2024, 45(5): 112-118.
SHI Haonan， ZHAO Yongjian， WEN Xinlong, et al. Effect of carbon black dosage on low temperature performance of different rubber（I）［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2024， 45（5）： 112-118.
Effect of Carbon Black Dosage on Low Temperature
Performance of Different Rubber（I）
SHI Haonan， ZHAO Yongjian， WEN Xinlong， SHI Xinyan
（College of Polymer Science and Engineering; Key Laboratory of Rubber-Plastics, Ministry of Education,
Qingdao University of Science and Technology, Qingdao 266042, China）
Abstract: In this study, four kinds of rubber, natural rubber（NR）, nitrile rubber（NBR）, ethylene propylene diene monomer（EPDM）, and acrylate rubber containing active chlorine（ACM） with different polarity and saturation were selected as the matrix rubber, and the dosage of carbon black N550 was 0, 10, 30, 50 and 70 parts, and the low-temperature performance of sulfurized rubber filled with different amounts of carbon black was characterized by differential scanning calorimeter（DSC）, low-temperature retraction tester and low-temperature brittleness testing machine. The corresponding low temperature performance of the three test methods is glass transition temperature (Tg), 10% retraction corresponding temperature (TR10) and brittleness temperature (Tb). The results showed that the Tg and TR10 of polar rubber NBR and ACM changed greatly with the increase of carbon black dosage, while the Tg and TR10 of non-polar rubber NR and EPDM changed less, which was positively correlated with the content of binding glue. Although there is a saturation difference between NBR and ACM, the Tg and TR10 changes are similar. Similarly, NR and EPDM also exhibit the same pattern, indicating that the saturation of rubber has no correlation with the effect of Tg and TR10of rubber. The influence of carbon black filling amount on rubber Tb is diversified due to the difference of rubber types, which has nothing to do with the content of binding glue, and has no obvious relationship with the polarity and saturation of rubber, among which EPDM rubber shows the lowest brittle temperature and is much lower than its Tg.
Key words: rubber； glass transition temperature； low temperature retraction temperature； low temperature brittleness temperature
收稿日期： 2023-11-06
基金项目： 山东省自然科学基金项目(ZR2020KE054).
作者简介： 史浩楠（2000—），男，硕士研究生.*通信联系人.
