| 双马来酰亚胺工艺改性及性能 |
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| 引用本文： | 周浩然,荆佳奇,王德志,范旭鹏,袁镇,赵立伟.双马来酰亚胺工艺改性及性能[J].复合材料学报,2020,37(6):1278-1284. |
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| 作者姓名： | 周浩然 荆佳奇 王德志 范旭鹏 袁镇 赵立伟 |
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| 作者单位： | 1.哈尔滨理工大学 材料科学与工程学院，哈尔滨 150040 |
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| 基金项目： | 黑龙江省自然科学基金(JC2017015)；国家自然科学基金(51677045) |
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| 摘 要： | 采用脂肪族双马来酰亚胺(HMDA-BMI)对4,4’-二苯甲烷型双马来酰亚胺(BDM)进行工艺改性，得到了一种低黏度、流动性好的基体树脂。当HMDA-BMI与BDM的摩尔比为1: 1时，黏度-温度曲线表明改性体系黏度可降低至0.50 Pa·s左右，低黏度平台的温度区间为85~175℃之间；黏度-时间曲线表明改性体系合适的充模温度为130~145℃，获得的改性基体树脂适合RTM成型工艺；通过DSC曲线确定了改性基体树脂固化工艺为160℃×2 h＋180℃×2 h＋200℃×2 h＋230℃×4 h；FTIR表明改性体系按照此工艺可以固化完全；DMA曲线和TG曲线分析结果表明改性体系的耐热性基本保持不变；共聚改性体系的拉伸强度和弯曲强度分别为80.1 MPa和116 MPa。
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| 关 键 词： | 双马来酰亚胺 共聚 加工性 流变性能 改性 |
| 收稿时间： | 2019-07-05 |
Process modification and properties analysis of bismaleimide |
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| Affiliation: | 1.School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China2.Institute of Petrochemisty, Heilongjiang Academy of Sciences, Harbin 150040, China |
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| Abstract: | Aliphatic bismaleimide(HMDA-BMI) was used to copolymerize with 4,4’-bismaleimide diphenylmethyene (BDM) for preparing a matrix resin with low viscosity and good processing. When the molar ratio of HMDA-BMI to BDM is 1: 1, the viscosity-temperature test result shows that the viscosity of the HMDA-BMI-BDM system can be reduced to about 0.5 Pa·s, and the temperature range of the low viscosity platform is between 85-175℃. The viscosity-time result shows that the suitable mold filling temperature of the modified system is 130-145℃, and the obtained modified matrix HMDA-BMI-BDM resin is suitable for RTM. The curing process determined by the DSC method is 160℃×2 h+180℃×2 h+200℃×2 h+230℃×4 h. FTIR result shows that the modified system can be completely cured according to this process.The results of DMA and TG analysis show that the heat resistance of the modified system remains basically unchanged. The tensile strength and flexural strength of the modified system reaches 80.1 MPa and 116 MPa, respectively. |
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