Study On The Effect Of Coupling Agent Modified CeO₂on Reinforcing Natural Rubber

This papers through in natural rubber (NR) in the added not modified sex oxidationCE (CeO2) and three species coupling agent modified sex of oxidation CE (CeO2), systemof research has CeO2on NR performance of effects, experiment used determination rubberstretch strength, and tear strength, and tensile strength, and maximum elongation rate andhardness, performance of method, research CeO2and coupling agent modified sex CeO2onrubber performance of effects, while, By comparing the rubber changes in before and aftereach performance study of CeO2and coupling agent modified CeO2on aging properties ofNR. CeO2modified by three types of coupling agent, by IR spectroscopy, Particle size,contact angle, SEM, TG and tested methods to prove the modification Effect of silanecoupling agent.Results showed that, CeO2after three species different of coupling agent modified sex,in CeO2particles surface formed has a layer coupling agent molecular film, coupling agentmodified sex CeO2of effect better, coupling agent of dosage for CeO2dosage of2%~5%,The modified CeO2was changed from hydrophilic to lipophilic, three species couplingagent of modified sex effect is: Titanium acid ester coupling agent modified sex>aluminum acid ester coupling agent modified sex> Silicon acid ester coupling agentmodified sex. Adding CeO2and coupling agent modified CeO2to NR, in the reinforcementsystem of NR, when you add a little volume comparison of CeO2, to some extent, canimprove the performance of the rubber, the tensile strength raised from20.47Mpa to22.2Mpa, tear strength and tensile strength of rubber is also improved. When the amount ofCeO2is large, the effect of CeO2reinforcing NR is obvious, with the addition of CeO2increased, rubber of performance appeared first increases reduced of trend, which stretchstrength maximum for22.8Mpa, and not added CeO2compared to improve11.4%, the tearstrength of rubber improved7.8%, the tensile strength of rubber improved28.3%, after thehot air aging of rubber, added CeO2of rubber sample stretch strong than not added CeO2rubber sample of stretch strength high out2.93Mpa, add CeO2to NR can play a significant role in reinforcing. Add three kinds of silane coupling agent modified CeO2andunmodified CeO2to the natural rubber without reinforce system, found that when add asmall amount of CeO2, The reinforcing effect of CeO2for NR and the effect of NR inreinforcing NR system are similar,when adding a large amount of the modified CeO2andthe unmodified CeO2, for the reinforcing effect of NR, after coupling agent modified sex ofCeO2better than not modified sex CeO2, in the three species coupling agent fill strong theperformance of NR, Silicon coupling agent modified sex CeO2in NR in the of dispersionis the best, titanium acid ester coupling agent fill strong NR of mechanical performancebest, compared with the NR without the addition of the modified CeO2, added titaniumacid ester coupling agent modified sex CeO2of NR of stretch strength improved18.6%,tear strength improved13.0%, after rubber samples aging, Added titanium acid estercoupling agent modified sex CeO2of rubber sample of mechanical strength also Supreme,in NR in the added aluminum acid ester coupling agent modified sex CeO2of rubbersamples stability can better, integrated considered three species coupling agent modifiedsex CeO2and not modified sex CeO2on NR performance of fill strong role: Titanium acidester coupling agent> Aluminum acid ester coupling agent> Silicon coupling agent> notmodified sex oxidation CE.