以芳基乙炔为前驱体制备高强度炭泡沫(英文)  

Synthesis of carbon foams with a high compressive strength from arylacetylene

作　　者：张淑平[1] 刘明贤[2] 甘礼华[2] 吴方锐[2] 徐子颉[2] 郝志显[2] 陈龙武[2] 

机构地区：[1]上海理工大学理学院,上海200093 [2]同济大学化学系,上海200092

出　　处：《新型炭材料》2010年第1期9-14,共6页New Carbon Materials

基　　金：National Natural Science Foundation of China (20473057and20973127);Shanghai Nanotechnology Promotion Center(0752nm006,0952nm00800)~~

摘　　要：以硫酸为催化剂,芳基乙炔为前驱体,经聚合、正戊烷发泡、炭化获得了高强度炭泡沫。通过选择合适的制备条件,如:发泡剂的用量,催化剂的浓度及用量,以及匀泡剂吐温80的添加量,可以制得孔结构良好、韧带和接点光滑的炭泡沫。芳基乙炔聚合物泡沫炭化后高的残炭率(86%)和良好的孔结构赋予炭泡沫较高的机械强度;所制炭泡沫的耐压强度达到25.8MPa,强度/密度比为43.0MPa/(g.cm-3).Carbon foams with high mechanical strength were prepared by polymerization of arylacetylene using sulfuric acid as a catalyst,pentane as a blowing agent and Tween 80 as a bubble stabilizer,followed by carbonization. Through controlling the preparation conditions such as the proportion of blowing agent,the concentration and volume of the catalyst,and the amount of the bubble stabilizer,carbon foams with good porous structure,smooth ligaments,and junctions without microcracks could be fabricated. The representative carbon foam possesses a high compressive strength of 25.8 MPa and a high strength/density ratio of 43.0 MPa/（g·cm-3）,owing to a high char yield of the arylacetylene polymer,which is up to 86% after carbonization,and a good pore structure of the products.

关 键 词：炭泡沫 高耐压强度 芳基乙炔 

分 类 号：TB383.4[一般工业技术—材料科学与工程]