研究了含2,3,3’,4’-联苯四酸二酐(a-BPDA)的聚酰亚胺(PI)泡沫材料体系中,泡沫前驱体树脂的热处理温度、计算分子量、二酐分子结构对聚酰亚胺前驱体树脂熔体粘度和泡沫形貌的影响.研究发现,对于a-BPDA/m-PDA/NA体系,计算分子量为1500、密度为100 kg/m3时,前驱体树脂经过260℃/1h的热处理得到的泡沫材料泡孔均匀、闭孔率可达89％,压缩强度为1.34 MPa,压缩模量为37.1 MPa;在该体系中,部分引入ODPA或BTDA,可降低材料制备成本,同时拥有PI泡沫原有的形貌和闭孔率.
参考文献
| [1] | Kentaro Taki;Takashi Nakayama;Taichi Yatsuzuka;Masahiro Ohshima.Visual Observations of Batch and Continuous Foaming Processes[J].Journal of Cellular Plastics,20032(2):155-169. |
| [2] | Cano CI;Weiser ES;Pipes RB.Solid-state polyimide foaming from powder precursors: Effect of morphology and process parameters on the diffusive phenomena[J].Cellular Polymers: An International Journal,20045(5):299-309. |
| [3] | Cano CI;Weiser ES;Kyu T;Pipes RB.Polyimide foams from powder: Experimental analysis of competitive diffusion phenomena[J].Polymer: The International Journal for the Science and Technology of Polymers,200522(22):9296-9303. |
| [4] | Cano CI;Kyu T;Pipes RB.Modeling particle inflation from poly(amic acid) powdered precursors. I. Preliminary stages leading to bubble growth[J].Polymer engineering and science,20075(5):560-571. |
| [5] | Cano CI;Clark ML;Kyu T;Pipes RB.Modeling particle inflation from poly(amic acid) powdered precursors. II. Morphological development during bubble growth[J].Polymer engineering and science,20075(5):572-581. |
| [6] | Cano CI;Clark ML;Kyu T;Pipes RB.Modeling particle inflation from poly(amic acid) powdered precursors. III. Experimental determination of kinetic parameters[J].Polymer engineering and science,20083(3):617-626. |
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