聚合物基复合材料用耐高温水溶性芯模性能研究
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摘要
采用具有良好韧性的聚乙烯醇(PVA)和良好水溶性的聚乙烯吡咯烷酮(PVP)混合溶液作为胶黏剂,以石英砂作为填料,经过高温烘干工艺制备了一种低成本易成型的水溶性芯模。该芯模既能满足树脂基复合材料成型时的温度要求,又能在复合材料成型完成后进行水溶脱除。主要研究了水溶性芯模材料的组成、制备工艺与成型收缩率、耐温性、加工性等相关性能,并对水溶性芯模材料的水溶性作了评价和表征。
Taking mixture aqueous solution of polyvinyl alcohol( PVA) with good toughness and polyvinylpyrrolidone( PVP) with good water solubility as adhesive,quartz sand as filler,a low-cost,easyto-form water soluble core mold was prepared by drying process at high temperature. This core mold could meet the temperature requirements of the polymer matrix composites and also be removed from cured composite parts. The influences of composition and fabrication process on its shrinkage,the heat resistance,processing performance and related capability were investigated in detail. And the solubility of water soluble core was evaluated and characterized.
Taking mixture aqueous solution of polyvinyl alcohol( PVA) with good toughness and polyvinylpyrrolidone( PVP) with good water solubility as adhesive,quartz sand as filler,a low-cost,easyto-form water soluble core mold was prepared by drying process at high temperature. This core mold could meet the temperature requirements of the polymer matrix composites and also be removed from cured composite parts. The influences of composition and fabrication process on its shrinkage,the heat resistance,processing performance and related capability were investigated in detail. And the solubility of water soluble core was evaluated and characterized.
引文
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[18]MA L.Water soluble tooling materials technology for the manufacturing of hollow-structure parts[J].SAMPE J,2007,43(5):24-33.
[19]RENE R,SUNG-JUN P,JIN-HWE K,et al.Characterization of nomex honeycomb core constituent material mechanical properties[J].Compos Struct,2014(117):255-266.
[2]张芳,殷永霞,谭放.水溶性芯模性能和应用研究[J]航天制造技术,2012(6):53-60.
[3]ARTZ G J,IOMBARDI J L,VAIDYANATHAN R,et al Water soluble tooling materials for composite structure:US6828373[P].2004-11-07.
[4]魏正方,曾黎明,王晶.新型水溶性芯模材料的研制[J].粘接,2007,28(2):13-15.
[5]魏正方,曾黎明.水溶性芯模胶黏剂的研究进展[J]粘接,2007,28(1):58-60.
[6]叶宏军,翟全胜,彭志霞,等.复合材料帽型结构水溶性芯模共固化成型工艺研究[J].纤维复合材料,2009(4):3-5.
[7]李晓丹,马俊龙,陈浩然,等.树脂基复合材料用耐高温水溶性模具材料性能研究[J].纤维复合材料,2010(6):6-9.
[8]张胜利,韩建平,程勇,等.大长径比壳体芯模防裂技术[J].玻璃钢/复合材料,2013(3):84-88.
[9]孟祥武,郑志才,孙士祥,等.水溶性砂芯模材料在成型复合材料壳体中的应用[J].工程塑料应用,2016(12):43-47.
[10]高芳亮.RTM工艺用水溶性芯模的制备与性能[D].长沙:国防科学技术大学,2010.
[11]罗楚养,熊峻江,益小苏,等.基于水溶性型芯的RTM成型的整体化复合材料翼盒研制[J].复合材料学报,2011(3):203-209.
[12]刘天涛,刘新东,杨兰华,等.水溶性轻质砂芯模性能与应用[J].工程塑料应用,2017(7):69-72.
[13]张龙,李远才,祝辉.热捣鼓法制备水溶芯工艺及配方的研究[J].铸造技术,2009(12):1497-1499.
[14]罗浩,陶红波,鲁先孝,等.水溶性芯模在VARI成型工艺中的应用研究[J].玻璃钢/复合材料,2017(11):77-79.
[15]MIYAZAWA N.Properties of starch bonded cores for iron casting[J].British Foundryman,1986(10):392-396.
[16]李英民,刘洪俊,刘伟华,等.铸造用CO2硬化聚乙烯醇粘结剂促硬剂的研究[J].铸造技术,2012(61):198-202.
[17]顾元华,张强.PVA快速溶解的理论及实践[J].纺织学报,1991(11):500-504.
[18]MA L.Water soluble tooling materials technology for the manufacturing of hollow-structure parts[J].SAMPE J,2007,43(5):24-33.
[19]RENE R,SUNG-JUN P,JIN-HWE K,et al.Characterization of nomex honeycomb core constituent material mechanical properties[J].Compos Struct,2014(117):255-266.