CAJ | 학술논문

采用原子转移自由基聚合法(ATRP)在纳米SiO_2表面接枝PBA,并采用TEM及力学性能测试等手段研究了纳米SiO_2及SiO_2-g-PBA复合粒子的添加对聚氯乙烯(PVC)力学性能的影响.结果表明:用ATRP聚合方法有少量的PBA接枝于纳米SiO_2表面;所制备的纳米复合粒子在PVC中较纳米SiO_2粒子分散均匀,使纳米PVC/SiO_2-g-PBA纳米复合材料的拉伸强度、断裂伸长率及断裂能均明显高于PVC及PVC/ SiO_2复合材料.
채용원자전이자유기취합법(ATRP)재납미SiO_2표면접지PBA,병채용TEM급역학성능측시등수단연구료납미SiO_2급SiO_2-g-PBA복합입자적첨가대취록을희(PVC)역학성능적영향.결과표명:용ATRP취합방법유소량적PBA접지우납미SiO_2표면;소제비적납미복합입자재PVC중교납미SiO_2입자분산균균,사납미PVC/SiO_2-g-PBA납미복합재료적랍신강도、단렬신장솔급단렬능균명현고우PVC급PVC/ SiO_2복합재료.
In the paper, poly(butyl acrylate) (PBA) was grafted onto the suface of nano-silicon dioxide (SiO_2) particles through atom transfer radical polymerization(ATRP) of butyl acrylate. Moreover, the effects of nano-SiO_2 particles and nano SiO_2-g-PBA composited particles on the mechanical properties of Poly (vinyl Chloride) (PVC) were studied by means of transmission electron microscope (TEM) and mechanical properties testing. The results showed that PBA was grafted on to the surface of nano-SiO_2 through ATRP reaction. Moreover, in comparison with nano-SiO_2 particles, the dispersibility of nano SiO_2-g-PBA composited particles in the PVC was greatly improved, and accordingly the PVC/ SiO_2-g-PBA composites possessed higher tensile strength, elongation at break and breaking energy than PVC and PVC/ SiO_2 composites.