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在炭布/树脂复合材料预浸过程中应用超声连续改性方法,对浸渍界面在线处理,采用金相及扫描电镜对超声强迫浸渍前后胶带的表观及截面进行了分析,表明在不改变胶带指标的情况下,超声处理后树脂已浸入炭纤维束,使得胶带的浸润性及浸渍均匀性均有较大改善。通过流体动力学和流体静力学对超声处理下的浸润过程进行了研究,结果表明,超声在酚醛树脂体系内引发的空化效应和声流搅拌作用,可在树脂体系中产生2.29×1011Pa的冲击压力,同时可促使树脂体系内分子以2.64 m/s的速度运动,使得酚醛树脂完全浸润炭纤维的时间缩短到3 min,快速促进了树脂在炭布表面的吸附、扩散和渗透,达到两者之间的良好浸润。
In the carbon cloth / resin composite pre-impregnation process using ultrasonic continuous modification method, the impregnation interface online processing, the use of metallographic and scanning electron microscopy of ultrasound before and after impregnation tape apparent and cross-section analysis showed that without changing the tape In the case of the index, the resin has been immersed in the carbon fiber bundle after ultrasonic treatment, so that the wettability of the adhesive tape and the impregnation uniformity are greatly improved. The infiltration process under ultrasonic treatment was studied by hydrodynamics and hydrostatics. The results showed that the cavitation effect and acoustic stirring caused by ultrasonic in the phenolic resin system can produce an impact of 2.29 × 10 11 Pa in the resin system Pressure, at the same time can promote the resin system molecules to 2.64 m / s speed of movement, making the phenolic resin completely infiltrated carbon fiber time is shortened to 3 min, quickly promoted the adsorption of resin in the carbon cloth surface, diffusion and penetration to reach both Good infiltration between.