面向高速铺放预浸料层间粘结性能研究

Experimental Research on Prepreg Tack between Layers Based on Highvelocity Automated Placement Process

为了研究自动铺放过程中预浸料层间粘结性能与铺放工艺的关系,自行设计了一套模拟高速铺放过程的预浸料粘结性能测试系统,采用自动铺放和剥离实验分开进行的"两步法"作为粘结性能的测试方法。利用该测试方法研究了CCF300/BA9916-2环氧树脂预浸料的自动铺放粘结性能工艺特性,采用单因素实验,研究了不同铺放工艺参数对预浸料层间粘结性能的影响规律,并运用正交实验,确定了各铺放工艺参数对预浸料层间粘结性能的影响程度。实验结果表明,预浸料层间粘结性能随着铺放压力和铺放温度的增大而增大,随着铺放速度的增大而减小。铺放温度对预浸料层间粘结性能影响最为显著,其次为铺放压力,铺放速度影响最小。

To solve the problem of bonding suitability between adjacent prepreg layers in the automated placement process, a new test system for characterization of prepreg tack which simulates the automated placement process was designed. The test method called two-step method consisting of the automated placement and peeling test has been developed. To study the processing property of CCF300/BA9916-2 epoxy prepreg tack, single factor experiments were carried out to find the influence of the lay-up processing parameters on the prepreg tack. And orthogonal experiments were accomplished to confirm the impact of the lay-up processing parameters. The results showed that the prepreg tack increases along with the increase of lay-up pressure and lay-up temperature, and decreases with the increase of lay-up velocity. The impact of lay-up temperature on prepreg tack is most significant, followed by the impact of lay-up pressure, and the lay-up velocity has the minimum impact.