上浆剂对国产碳化硅纤维表面及其织造性能的影响

为研究添加不同含量的水性环氧上浆剂以及上浆剂含固量对碳化硅（SiC）纤维表面以及SiC纤维束织造性能的影响，对纤维束进行了二次表面上浆处理。测试了SiC纤维束的耐磨性、强伸性以及柔软性等适编性能。结果表明：与未二次上浆和由E-0、E-10、E-20上浆剂上浆的SiC纤维束相比，经E-15上浆剂上浆后的SiC 纤维束耐磨性能最好， 柔软性也较好；上浆剂的含固量对纤维表面形貌影响较大；用含固量为9%的E-15上浆剂上浆后的纤维表面浆膜更为完整光滑，同时SiC 纤维束的断裂强度较未二次上浆处理的提高了180%，说明此含固量为最适合的E-15上浆剂含固量。

Influence of sizing agent on surface and weaving performance of SiC fibers

To investigate the influence of the additive content in sizing agent and the percentage by weight of size on the surface and weavability of SiC fibers,the domestic KD-I SiC fibers were sized with waterborn epoxy resin sizing agent by two times of sizing treatment.Tensile abrasion resistance,strength and elongation and flexibility were studied.The results indicate that SiC fibers sized with E-15 sizing agent exhibit higher abrasion resistance and better flexibility than those unsized and sized with E-0,E-10 and E-20 sizing agents.It is also found that the percentage by weight of size has significantly influence on the surface morphology of SiC fibers.The SiC fibers sized with 9％ E-15 sizing agent is considered as the optimum dosage,and the tensile strength of SiC fibers is enhanced by about 180％ compared with that of the unsized.