VARTM成型聚氨酯复合材料的除湿工艺研究  

Study on Dehumidification Process in VARTM Molding of Polyurethane Composite Material

作　　者：梁自禄[1] 喻雄 黄明富[1] 马倩倩 陈煌[1] 刘海洋[1] LIANG Zilu;YU Xiong;HUANG Mingfu;MA Qianqian;CHEN Huang;LIU Haiyang(Zhuzhou Times New Material Technology Co.Ltd,Zhuzhou 412007,Hunan,China)

机构地区：[1]株洲时代新材料科技股份有限公司,湖南株洲412000

出　　处：《聚氨酯工业》2020年第5期28-31,共4页Polyurethane Industry

基　　金：国家自然科学基金(51003041)。

摘　　要：聚氨酯(PU)复合材料在真空辅助树脂传递模塑(VARTM)成型过程中,微量水分与异氰酸酯反应产生气泡,导致复合材料力学性能下降。该研究在一定真空压力下,对增强体(玻璃纤维)分阶段进行除湿,然后采用真空导入聚氨酯树脂制备单向玻璃纤维增强复合材料,研究了不同除湿条件对PU复合材料性能的影响。通过复合材料力学性能测试和红外光谱表征分析表明:超过30℃并除湿4 h可达到除湿终点,单纯提高温度对除湿效果影响较小,时间是影响除湿效果的主要因素。During the VARTM molding process of PU composite material,bubble generating from trace moisture and isocyanate could lead to the mechanical properties of composite materials decline.At certain vacuum pressure,the reinforce material(fiberglass)was dehumidified in stages,then the unidirectional fibreglass composite material was prepared by using VARTM molding process.The effects of different dehumidification conditions on the properties of PU composite material were studied.The results of mechanical properties tests and IR spectroscopy showed that the dehumidification destination could be reached over 30℃and 4 h.Only increasing the temperature had less effect on the dehumidification and time was the main factor.

关 键 词：聚氨酯树脂 风电叶片 除湿工艺 VARTM工艺 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]