|本期目录/Table of Contents|

[1]张新晴,汪祥意,夏浙安?鄢,等.氯丁橡胶硫化反应动力学[J].合成橡胶工业,2024,2:131-135.
 ZHANG Xin-qing,WANG Xiang-yi,XIA Zhe-an,et al.Vulcanization kinetics of chloroprene rubber[J].China synthetic rubber industy,2024,2:131-135.
点击复制

氯丁橡胶硫化反应动力学(PDF)

《合成橡胶工业》[ISSN:1000-1255/CN:62-1036/TQ]

期数:
2024年2期
页码:
131-135
栏目:
出版日期:
2024-03-15

文章信息/Info

Title:
Vulcanization kinetics of chloroprene rubber
文章编号:
1000-1255(2024)02-0131-05
作者:
张新晴汪祥意夏浙安?鄢陆 冲?鄢
华东理工大学 材料科学与工程学院,上海 200237
Author(s):
ZHANG Xin-qing WANG Xiang-yi XIA Zhe-an LU Chong
School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
关键词:
氯丁橡胶硫化反应动力学非等温差示扫描量热法硫化仪法表观活化能反应级数
Keywords:
chloroprene rubber vulcanization reaction kinetics non-isothermal differential scanning calorimetry vulcanizer method apparent activation energy reaction order
分类号:
TQ 333.5
DOI:
DOI:10.19908/j.cnki.ISSN1000-1255.2024.02.0131
文献标识码:
B
摘要:
以1,2-亚乙基硫脲为促进剂、氧化锌和氧化镁为硫化剂对氯丁橡胶进行硫化,采用差示扫描量热法研究了氯丁橡胶的非等温硫化反应动力学,通过Kissinger方程和Crane方程计算了硫化反应的动力学参数,并采用硫化仪法研究了等温硫化反应的动力学,计算了硫化反应热硫化阶段的表观活化能。结果表明,n级动力学模型可以有效描述氯丁橡胶的非等温硫化过程,硫化反应的表观活化能为92.78 kJ/mol,反应级数为0.93;氯丁橡胶的等温硫化过程可以分为焦烧阶段、热硫化阶段和平坦硫化阶段,其中热硫化阶段符合一级反应动力学特征,此时表观活化能为53.38 kJ/mol。
Abstract:
Chloroprene rubber was vulcanized with 1,2-ethylenethiourea as accelerator, zinc oxide and magnesium oxide as vulcanizing agents. The non-isothermal vulcanization kinetics of chloroprene rubber was studied by differential scanning calorimetry, the kinetic parameters of vulcanization reaction were calculated by Kissinger and Crane equations, and the kinetics of isothermal vulcanization reaction was studied by vulcanizer method and the apparent activation energy at the thermal vulca-nization stage was calculated. The results showed that the n-order kinetic model could describe the non-isothermal vulcanization process of chloroprene rubber effectively. The apparent activation energy of the vulcanization reaction was 92.78 kJ/mol and the reaction order was 0.93. The isothermal vulcanization process of chloroprene rubber could be divided into 3 stages: scorching stage, thermal vulcanization stage and flat vulcanization stage. The thermal vulcanization stage followed the first-order reaction kinetics and the apparent activation energy of the thermal vulcanization stage was 53.38 kJ/mol.

参考文献/References

[1] 焦书科, 齐润通, 马东柱, 等. 合成橡胶技术丛书(第七分册): 氯丁橡胶[M]. 北京: 中国石化出版社, 2016: 4-10.[2] Chaiwan P, kaewkittinarong A, Pumchusak J. Nonisothermal curing kinetics of solid resole by differential scanning calorimetry[J]. Thermochimica Acta, 2019, 675: 119-126. [3] Ke Qining, Wu Chonggang, Chen Xuhuang, et al. Model-free cure kinetics of additional liquid silicone rubber[J]. Thermochimica Acta, 2020, 688: 178584.[4] 王超. 过氧化物动态硫化三元乙丙橡胶/聚丙烯的动力学行为[J]. 弹性体, 2022, 32(1): 16-21.[5] Dong Huanhuan, Luo Yuanfang, Zhong Bangchao, et al. Effects of vulcanization accelerator functionalized graphene on the co-vulcanization kinetics and mechanical strength of NR/SBR blends[J]. Polymer Testing, 2020, 81: 106169.[6] 戈明亮, 阚长华, 易玉华, 等. 橡胶硫化反应动力学研究概况[J]. 橡胶工业, 2004, 51(10): 631-635.[7] 王敏, 文华银, 罗世凯, 等. 超临界二氧化碳对硅橡胶硫化动力学的影响[J]. 合成橡胶工业, 2022, 45(5): 393-399.[8] Guimar■es B S S, Guiguer E L, Bianchi O, et al. Non-isothermal cure kinetics of an anhydride-cured cycloaliphatic/aromatic epoxy system in the presence of a reactive diluent[J]. Thermochimica Acta, 2022, 717: 179351.[9] Hong Inkwon, Lee Sangmook. Cure kinetics and modeling the reaction of silicone rubber[J]. Journal of Industrial and Engineering Chemistry, 2013, 19(1): 42-47.[10] Kissinger H E. Reaction kinetics in differential thermal analysis[J]. Analytical Chemistry, 1957, 29(11): 1702-1706.[11] Silva I D S, Barros J J P, Jaques N G, et al. On the curing kinetics of epoxy/PLA compounds [J]. Journal of Materials Research, 2021, 36(14): 2973-2986.[12] Crane L W,Dynes P J,Kaelble D H. Analysis of curing kinetics in polymer composites[J]. Journal of Polymer Science: Polymer Letters Edition, 1973, 11(8): 533-540.[13] Yan Hongqiang, Shang Chen, Qi Guorong. Synthesis, cure kinetics and thermal properties of the 2,7-dihydroxynaphthalene dicyanate[J]. Polymer, 2003, 44(26): 7861-7867.[14] Wang Pingyue, Qinn Honglian, Yu Heping. Kinetics of natural rubber vulcanization in the end stage of curing period[J]. Journal of Applied Polymer Science, 2010, 101(1): 580-583.[15] 崔子文, 景元蓉, 刘广永. 丁腈橡胶硫化反应动力学研究[J]. 特种橡胶制品, 2021, 42(1): 8-12.[16] 王超. 酚醛树脂动态硫化三元乙丙橡胶/聚丙烯热塑性弹性体的动力学研究[J]. 橡胶工业, 2022, 69(6): 416-421.[17] Mohanadas P N, Mukundan T, Santhanakrishnan T. Low-temperature vulcanizable chloroprene rubber-bromobutyl rubber blend for encapsulation of undersea sensors: Nonconventional cure systems and reaction kinetics[J]. Journal of Elastomers & Plastics, 2019, 52(4): 322-336.

备注/Memo

备注/Memo:
-
更新日期/Last Update: 1900-01-01