光固化3D打印与传统涂膜法制备聚酰亚胺的摩擦学性能比较研究

光固化3D打印与传统涂膜法制备聚酰亚胺的摩擦学性能比较研究摘要聚酰亚胺是一种重要的高性能工程材料，具有优异的力学性能和耐热性能等特点，因此在航空、航天和汽车等领域得到广泛应用。本文研究了光固化3D打印

3D 光固化打印与传统涂膜法制备聚酰亚胺的摩擦学 性能比较研究 摘要 聚酰亚胺是一种重要的高性能工程材料，具有优异的力学性能和耐 热性能等特点，因此在航空、航天和汽车等领域得到广泛应用。本文研 3D 究了光固化打印和传统涂膜法两种制备聚酰亚胺的方法对摩擦学性能 的影响，并比较了两种方法的优缺点和适用范围。实验结果表明，光固 3D 化打印制备的聚酰亚胺具有更高的摩擦系数和更低的磨损率，但是其 抗拉强度和耐热性能并不如传统涂膜法制备的聚酰亚胺。因此，在不同 的实际应用场景中应选择不同的制备方法。 3D 关键词：聚酰亚胺；摩擦学性能；光固化打印；涂膜法 Introduction Polyimide is akind of high-performance engineering material, which has excellent mechanical properties, thermal properties and chemical resistance. It has been widely used in aerospace, aviation and automotive fields due to its outstanding performance. The preparation method of polyimide has agreat influence on its performance, and there are many commonly used preparation methods, such as casting, hot pressing, and coating. With the development of 3D printing technology, the preparation of polyimide by 3D printing has become a new research direction. Light-cured 3D printing is akind of 3D printing technology that uses alight-cured resin as the printing material. Compared with traditional coating method, light-cured 3D printing has the advantages of high precision, rapid shaping, and easy control of the thickness and shape of the polyimide film. This study aims to compare the friction and wear properties of polyimide prepared by light-cured 3D printing and traditional coating method, and to analyze their advantages and disadvantages and application scope. Experimental Polyimide was prepared by two methods: light-cured 3D printing and traditional coating method. The light-cured 3D printing process mainly includes the following steps: resin preparation, SLA 3D printing,