用于中空壳体复合材料一体成型的轻质水溶性芯模研究  

Research on Lightweight Water Soluble Core Mold for Hollow Shell Composite Material Integrated Molding

作　　者：姚雷 范欣愉 任建楠[1] 杨洪鉴 李宸熙 石礼硕 李启志 YAO Lei;FAN Xin-yu;REN Jian-nan;YANG Hong-jian;LI Chen-xi;SHI Li-shuo;LI Qi-zhi(Shenyang Aircraft Corporation,Shenyang 110850,China;School of Materials Science and Engineering,Shenyang Aerospace University,Shenyang 110136,China)

机构地区：[1]沈阳飞机工业(集团)有限公司,辽宁沈阳110850 [2]沈阳航空航天大学材料科学与工程学院,辽宁沈阳110136

出　　处：《塑料科技》2024年第8期117-120,共4页Plastics Science and Technology

摘　　要：以聚乙烯吡咯烷酮(PVP)的水溶液为胶黏剂,空心玻璃微珠为基体材料,经过热烘干工艺制备了一种用于中空壳体复合材料一体成型的轻质水溶性芯模材料,着重研究了胶黏剂用量、不同处理方法对芯模弯曲强度、压缩强度以及水溶速率的影响,并使用扫描电镜观察芯模材料微观组织形貌。结果表明:胶黏剂用量为40%时,弯曲强度和压缩强度最高可达到3.346 MPa和3.499 MPa,水溶速率为0.238 g/s,经过偶联剂处理以及高温处理后,芯模强度以及水溶速率均有提升,改性效果良好;小尺寸填料能有效填补基体材料堆积形成的空隙,但提升力学强度的同时会影响水溶速率。水溶芯的各项性能能够满足树脂传递模塑(RTM)成型、真空袋成型的使用要求,为异形中空型材一体成型提供了一种解决方法。A lightweight water-soluble core mold material for hollow shell composites was prepared by hot drying process with polyvinylpyrrolidone(PVP)aqueous solution as the adhesive and hollow glass microspheres as the matrix material.The effects of the content of adhesive and different treatment methods on the flexural strength,compressive strength and dissolution rate of the core mold were studied,and the microstructure of the core mold material was observed by scanning electron microscope.The results show that adhesive dosage of 40%,the flexural strength and compressive strength could reach up to 3.346 MPa and 3.499 MPa,with a water solubilization rate of 0.238 g/s.After the coupling agent treatment and high temperature treatment,the core mold strength and dissolution rate are improved,and the modification effect is good;small filler sizes can effectively fill the gap formed by matrix materials accumulation,improve the mechanical strength and affect the water solubility rate.The properties of water-soluble core can meet the requirements of resin transfer molding(RTM)and vacuum bag molding,which provides a solution for the integrated molding of profiled hollow profiles.

关 键 词：水溶性芯模 聚乙烯吡咯烷酮 空心玻璃微珠 低密度 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ320.64[化学工程—合成树脂塑料工业]