CAJ | 학술논문

采用两种原位表面修饰的纳米SiO_2(RNS和DNS)通过原位聚合的方法制备了纳米SiO_2/MC尼龙6复合材料,测试了材料的力学性能,RNS和DNS的加入均能使MC尼龙6的力学性能有较大提高,在一定的范围内对复合材料同时具有增强和增韧的作用,RNS的影响要大于DNS; 同时通过SEM、TGA等分析手段,考查了纳米SiO_2在聚合物基体中的分散情况、热稳定性.结果表明,纳米SiO_2粒子在基体中分布均匀, 两种纳米SiO_2 的加入均大大提高了复合材料热稳定性, 使MC 尼龙6 的起始降解温度分别提高10 ℃和21 ℃.
채용량충원위표면수식적납미SiO_2(RNS화DNS)통과원위취합적방법제비료납미SiO_2/MC니룡6복합재료,측시료재료적역학성능,RNS화DNS적가입균능사MC니룡6적역학성능유교대제고,재일정적범위내대복합재료동시구유증강화증인적작용,RNS적영향요대우DNS; 동시통과SEM、TGA등분석수단,고사료납미SiO_2재취합물기체중적분산정황、열은정성.결과표명,납미SiO_2입자재기체중분포균균, 량충납미SiO_2 적가입균대대제고료복합재료열은정성, 사MC 니룡6 적기시강해온도분별제고10 ℃화21 ℃.
Nano-SiO_2/ MC nylon 6 composites in situ polymerization were prepared with two kinds of the in-situ surface-modified nano-SiO_2(RNS,DNS). The mechanical properties of the composites were evaluated. RNS and DNS as the fillers had good effects on the reinforcement and toughening of the composite, and the effect of RNS was more than that of DNS. The dispersion of nano-SiO_2 in the composite, the thermostability of composites were studied by means of scanning electron microscopy (SEM), thermogravimetry (TGA) . The results showed that the nano-SiO_2 dispersed homogeneously in the composites; the addition of RNS and DNS improved the thermostability of the composites greatly , made the initial decomposition temperature rise by 10℃ and 21℃ respectively.