CAJ | 학술논문

使用共混法制备了纳米SiO2/聚酰亚胺复合薄膜，研究了纳米SiO2添加量对该复合薄膜力学性能、电气强度以及耐电晕性能的影响，并讨论了树脂体系的固含量对该复合薄膜耐电晕性能的影响。结果表明：随着SiO2添加量的增大，薄膜的拉伸强度变化不大，但断裂伸长率下降明显，电气强度先升高后降低，SiO2含量为6%时电气强度达到最大值，耐电晕性能提高。随着树脂固含量的增大，薄膜的耐电晕性能也随之提高，最佳树脂固含量为19%。
사용공혼법제비료납미SiO2/취선아알복합박막，연구료납미SiO2첨가량대해복합박막역학성능、전기강도이급내전훈성능적영향，병토론료수지체계적고함량대해복합박막내전훈성능적영향。결과표명：수착SiO2첨가량적증대，박막적랍신강도변화불대，단단렬신장솔하강명현，전기강도선승고후강저，SiO2함량위6%시전기강도체도최대치，내전훈성능제고。수착수지고함량적증대，박막적내전훈성능야수지제고，최가수지고함량위19%。
A nano-SiO2/polyimide film was prepared by blending method, the effects of nano-SiO2 content on the mechanical properties, electric strength and corona-resistance of the film were studied, and the effect of solid content of resin system on the corona-resistance of the film was discussed. The results indicate that with the increase of nano-SiO2 content, the tensile strength of the SiO2/PI film changes little, the elongation at break decreases obviously, the electric strength first increases and then decreases, which attains maximum when the nano-sized SiO2 content is 6%, and the corona-resistance is improved. With the increase of resin solid content, the corona-resistance of the film is improved, and the optimum solid content is 19%.