固化速度对聚硫橡胶压缩性能的影响*

南京大学学报(自然科学版) ›› 2012, Vol. 48 ›› Issue (3): 336–342.

固化速度对聚硫橡胶压缩性能的影响*

周柏杰，贺鹏，陈庆民**

出版日期:2015-06-05 发布日期:2015-06-05
作者简介: (南京大学化学化工学院高分子科学与工程系，南京，210093)

The influence of the curing rate
on the compression performances of polysulfide rubber

Zhou Bai一Jie，He Peng，Chen Qing- Min

Online:2015-06-05 Published:2015-06-05
About author: Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering,
Nanjing University, Nanjing, 210093，China)

摘要/Abstract

摘要： 通过调节胺催化剂的用量，研究了固化速度对聚硫橡胶(PSF)压缩性能的影响.测试了不同
固化速度试样的拉伸强度、压缩永久形变、压缩循环性能，并以溶胀测试进行辅证.此外，还采用无机碱
调节MnO₂的pH值改变固化速率，讨论了其与胺催化效果的差异.结果表明固化较快的试样，在数天
内有稳定的拉伸强度，而其压缩永久形变性能却不如较慢固化速度的试样，溶胀实验也得到了一致的结
论.要获得良好的压缩性能需调节适中的反应速度.

Abstract: Polysulfide rubbers(PSF) as good adhesives and scalants to multiple materials have been commercial applied for several decades.They are marked by the high resistance to the radiation, good low temperature properties, and low water-vapour transmission. However, the compression behaviors of PSF have less been
discussed before research work, In this paper, the influence of the curing rate on the compression behavior of the polysulfide(PSF) rubber was studied by controlling the loading of the amine catalyst.The tensile property, compression permanent set and the cyclic compression performances were investigated.The different catalytic effects of the amine catalyst and the pH value of curing agent (MnO₂)adjusted by NaOH wrere discussed simultaneously.Curing times tested by dielectric analyzer (DEA) varied from 140一2200 min by chancing the addition of catalyst; however the mechanical behaviors exhibited growth in the much longer period. The results showed that the fast curing samples obtained stably tensile properties in 14 days;however their compression behavior kept increasing
more than one month. Obviously, the compression performances of fast curing samples were not as food as the slow curing ones.The results from swelling tests showed the fast curing samples had the larger Mc(average molecular weight between two effect cross-linking points) indicating the lower cross-linking degrees, corresponding to the worse compression behavior of the fast curing samples The compression cyclic experiment as another important critical test exhibited the correspondence conclusions，which can evaluate the compression property in a short time by observing the declining of the compression repeating cycles. Conclusions have been drawn from the above results that it is necessary to control a proper curing rate to ensure the good compression performance.

周柏杰，贺鹏，陈庆民**. 固化速度对聚硫橡胶压缩性能的影响*
[J]. 南京大学学报(自然科学版), 2012, 48(3): 336–342.

Zhou Bai一Jie，He Peng，Chen Qing- Min
. The influence of the curing rate
on the compression performances of polysulfide rubber
[J]. Journal of Nanjing University(Natural Sciences), 2012, 48(3): 336–342.

参考文献

[1]Lucke H. Aliphatic polysulfide monograph of an elastomer. Huthig and Wepf; Basel，Germany,1994,278~565.
[2]Placek C. Polysulfide aanufacture. Noyes Data Corp, Park Ridge, NJ 1970，849一880.
[3]Ellerstein S. Encyclopedia of polymer science and engineering. The 2nd Edition. Mark H E，Bikales N W, Overberger C G. New York:Wi-ley, 1988，186一376.
[4]Capozzi G, Modena G. Oxidation of thiols，chemistry of the thiol group, Part 2. New York:Wiley, 197，85一100.
[5]Ferry J D. Cros-linked polymers and compote ites systems. Viscoclastic properties of poly- mers.The 3nd Edition. New York:Wiley, 1980，404一436.
[6]de Gennes P G. Scaling concepts in polymer physics, lthaca, NY:Cornell University Press,1979,219~244
[7]Curro J G , Pincus P. Theoretical basis for vis coclastic relaxation of clastomers in the long time limit. Macromolecules, 1983，16 559一562.
[8]Curro J G Pearson D S, Helfand E. Viscoelas ticity of randomly crosslinked polymer net works; Relaxation of dangling chains. Macro
molecules，1985，18:1157一1162.
[9]Carsten S, Ralf E，Gary S G, et al. Connectivi- ty and entanglement stress contributions in strained polymer networks. Macromolecules, 2008,41,1920一1928.
[10]Lu Y，Zhang J S, Chang P S, et al. Effect of filler on the compression set，comprcssion stress-strain behavior, and mechanical proper-
tics of polysulfide scalants. Journal of Applied Polvmer Science，2011，120:200一2007 .
[11]Lu Y，Shen M X，Ding X D, et al. Compres lion set property and stress-strain behavior dur ing compression of polysulfide sealants. Journal
of Applied Polymer Science, 2010，115:1718一 1723.
[12]Zhou Y J，Zhang J S, Wang Q J，et al. Im- provement in compression performance of the polysulfide sealant by thiol-acrylate reaction.
Polymer Engineering and Science，2012，52: 912一919.
[13]Zhang J S, Chen Q M. Modification of polysul- fide sealant with multi-alkoxyorganosilane cou- pling agents with hydroxyl-amine group. Jour-
nal of Nanjing University(N atural Sciences)，2010, 46(5): 567-574.(张俊生，陈庆民.含轻胺基团的多烷氧基硅烷偶联剂增强聚硫密封
胶研究.南京大学学报(自然科学),2010, 46 (5):567一5 74).
[14]Flory P J. Network structure and the elastic properties of vulcanized rubber. Chemstry Re view, 1944，35:51一75.
[15]Flory P J，Rehner J. Thermodynamics of heter- ogeneous polymers and their solutions. Journal of Chemcal Physics，1944，12:425一438.
[16]Zhou Y J，Shen M X, Wang Q J，et al. Kinetic study of polysulfidracrylate click reaction by DEA and DMA. Polymer Advanced Technolo-
gies, 2011，22，2374一2381.
[17]Krzypow J D, Rimnac M C. Cyclic steady state stress-strain behavior of UHMW polyethylene. Biomaterials, 2000，21:2081.

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