CAJ | 학술논문

以提纯凹凸棒土表面负载纳米二氧化硅粒子（AS）作为补强剂，将其填充到天然橡胶（NR）中，制备了复合材料。采用透射电镜（TEM）观察了凹凸棒土的形貌，分析了复合材料的力学性能。结果表明，棒状结构的凹凸棒土表面分散了纳米级的二氧化硅，光滑的表面变得粗糙。随着AS含量的增加，复合材料的拉伸强度，补强系数先上升后下降。当AS添加量为1 g时，复合材料的性能最佳，AS41/NR硫化胶拉伸强度达26.10 MPa，比空白样品提高了70%。AS粉体可以提高天然橡胶复合材料的耐热性能，T5%和Tmax比纯天然橡胶分别提高了40~70℃和20℃。
이제순요철봉토표면부재납미이양화규입자（AS）작위보강제，장기전충도천연상효（NR）중，제비료복합재료。채용투사전경（TEM）관찰료요철봉토적형모，분석료복합재료적역학성능。결과표명，봉상결구적요철봉토표면분산료납미급적이양화규，광활적표면변득조조。수착AS함량적증가，복합재료적랍신강도，보강계수선상승후하강。당AS첨가량위1 g시，복합재료적성능최가，AS41/NR류화효랍신강도체26.10 MPa，비공백양품제고료70%。AS분체가이제고천연상효복합재료적내열성능，T5%화Tmax비순천연상효분별제고료40~70℃화20℃。
In this paper, purified attapulgite modified by silica (AS) was prepared. The morphology of the filler particles was described by transmission electron microscopy (TEM). The reinforcement effect of natural rubber composites iflled by different content ifller was studied. TEM indicated that silica nanoparticles had a good dispersion on the surface of attapulgite powder. The smooth surface of attapulgite became rough. Compared with blank sample, the performance of AS/NR nanocomposites improved signiifcant. The tensile strength and coefifcient of nanocomposites were increased and the trend when iflling content of AS increased. The optimum properties of composites were iflled with 1 g. The tensile strength of AS41/NR nanocomposite was up to 26.10 MPa, increased by 70% compared to the neat natural rubber sample. AS particles could improve the heat resistance of natural rubber composites.T5% andTmax were increased 40~70℃ and 20℃ than natural rubber.