【作者】 王汝敏； 舒武炳； 宁荣昌； 金绪刚； 马蕊然；

【Author】 Wang Rumin Shu Wubing Ning Rongchang Jin Xugang Ma Ruiran (Northwestern Polytechnical University)

【机构】 西北工业大学；

【摘要】 作者以双马来酰亚胺为基本组分,研制了一种韧性好、耐湿热性好、复合材料工艺性良好的树脂基体。本文报道该树脂基本特性、复合材料成型工艺和性能方面的研究工作。结果表明,未固化树脂软化点低,丙酮中溶解性好,可湿法制备无纬布;无纬布粘性合适,铺覆性好,有较长的贮存期;成型温度低、压力小, 能使用普通热压罐成型;浇铸体韧性好、耐热性高,断裂延伸率3．37％,Tg218℃;复合材料综合性能良好,断裂韧性高,耐湿热性好。更多还原

【Abstract】 Authors have developed a toughened bismaleimide resin(BMI) for carbon fiber composites in primary structure aircraft applications, which has high toughness, excellent wet-hot properties and good processability. The cure reaction character of uncured resin, properties of cured bulk resin, fabrication technique and performance of carbon fiber reinforced composites are reported in this paper. It is concluded that uncured resin with low softening temperature has good solubility in common acetone and its prepregs are of good tack, drape and long storage life. The composites can be fabricated using common autoclave. The cure temperature and moulding pressure is 180℃ and 0.7 MPa respe ctively.Good properties of cured bulk resin are that tensile strength is 84.8 MPa, tensile fracture strain 3.37% ,Tg 218℃ and GIC is 195J/m2.T300B/toughened BMI composites have good toughness and excellent wet-hot properties which are equal to or better than those of 5245 composites.更多还原