CAJ | 학술논문

以三维网状碳纤维为增强体采用离心成型技术制备新型HA复合材料。重点研究三维网状碳纤维的改性工艺，观察改性前后碳纤维表面的微观形貌，分析离心加速度和HA浆料固相含量对离心过程中物质分离现象的影响，测量新型复合材料抗弯强度和断裂韧度。研究结果表明经过对氨基苯甲酸和提拉HA溶胶复合处理的碳纤维表面具有一层致密的、与基体结合性能较好的膜层。在pH=9，分散剂含量为5 wt%时，固相含量为55 wt%的HA浆料在2860 g加速度下离心后所得生坯密度均匀，1100℃真空烧结后三维网状碳纤维/HA复合材料的抗弯强度为109.4 MPa；断裂韧度为1.98 MPa·m1/2，分别比纯HA材料提高2.2和1.5倍。
이삼유망상탄섬유위증강체채용리심성형기술제비신형HA복합재료。중점연구삼유망상탄섬유적개성공예，관찰개성전후탄섬유표면적미관형모，분석리심가속도화HA장료고상함량대리심과정중물질분리현상적영향，측량신형복합재료항만강도화단렬인도。연구결과표명경과대안기분갑산화제랍HA용효복합처리적탄섬유표면구유일층치밀적、여기체결합성능교호적막층。재pH=9，분산제함량위5 wt%시，고상함량위55 wt%적HA장료재2860 g가속도하리심후소득생배밀도균균，1100℃진공소결후삼유망상탄섬유/HA복합재료적항만강도위109.4 MPa；단렬인도위1.98 MPa·m1/2，분별비순HA재료제고2.2화1.5배。
3D network carbon fibers were used to reinforce the HA composites by centrifugal slip casting technology. The treated technology of 3D network C-fibers were studied, micro-morphologies of the untreated and treated 3D network C-fibers were observed, the effects of the centrifugal acceleration and solid contents of HA slurries on mass segregation during centrifugal process were analyzed, and mechanical properties of sintered new composites were measured. The results show the 3D network carbon fibers after p-aminobenzoic acid disposal and dip in HA sol have a compact layer which has better contact with HA matrix. After centrifuged at 2860 g acceleration for the HA slurries prepared at pH=9 and the 5 wt% dispersant, the centrifuged green compacts have uniform density. After sintered at 1100℃, 3D CF/HA composites have the highest bending strength of 109.4 MPa and flexural toughness of 1.98 MPa.m1/2, which is 2.2 times and 1.5 times more than those of the HA samples respectively .