摘要
为探讨碳纤维增强热塑性树脂3D打印复合材料的界面问题,对聚氨酯/聚乙烯醇浆料处理连续碳纤维增强聚乳酸树脂3D打印复合材料的界面黏合性能进行研究。采用不同比例混合的上浆剂对碳纤维上浆处理,分析所形成的化学结构,探究上浆剂内部及其与树脂之间的作用机理,并对上浆量及力学性能进行测试。结果表明,在界面处形成了大量氢键和氨基甲酸酯等化学键,复合材料层间剪切强度达到1.31MPa,较最初提高了75.95%;弯曲强度为39.59MPa,提升了46.91%,能够满足实际工业应用的力学性能要求。综上,聚氨酯、聚乙烯醇可作为良好的上浆剂用于碳纤维增强热塑性树脂,且两者之间以及与聚乳酸之间均可形成牢固的化学键连接。
To explore the interface performance of carbon fiber-reinforced thermoplastic resin 3D printed composites,the interface adhesion performance of polyurethane/polyvinyl alcohol-sized continuous carbon fiber-reinforced polylactic acid resin 3D printed composites was studied.Carbon fiber was subjected to sizing treatment using different proportions of mixed sizing agents.The formed chemical structure was studied to explore the internal mechanism between the sizing agent and the resin.The sizing amount was analyzed and mechanical performance testing was conducted.The results show that numerous hydrogen bonds and chemical bonds,such as amino esters,are formed at the interface.The interlayer shear strength of the composite is 1.31 MPa,75.95%higher than the initial value;the bending strength is 39.59 MPa,an increase of 46.91%,meeting the mechanical properties required for industrial applications.Polyurethane and polyvinyl alcohol can be used as effective sizing agents for carbon fiber-reinforced thermoplastic resins,forming strong chemical bonds with polylactic acid.
作者
丁玲
权震震
DING Ling;QUAN Zhenzhen(College of Textiles,Donghua University,Shanghai 201620,China)
出处
《纺织科技进展》
2026年第2期1-6,共6页
Progress in Textile Science & Technology
基金
国家重点研发计划(2023YFB3709602)
国家自然科学基金(12202100)
中央高校基本科研业务费专项基金(2232023G-01)
国家重点研发计划(2022YFB3704500)
上海市自然科学基金(23ZR1401900)。
关键词
上浆
复合材料
3D打印
碳纤维
聚氨酯
聚乙烯醇
聚乳酸
热塑性树脂
sizing
composite material
3D printing
carbon fiber
polyurethane
polyvinyl alcohol
polylactic acid
thermoplastic resin
