沥青树脂和炭纤维的复合性能  

Properties of composites formed from pitch resin and carbon fibers

作　　者：查庆芳[1] 郭燕生[1] 张玉贞[1] 侯惠玉[1] 杨小军[1] 

机构地区：[1]中国石油大学重质油国家重点实验室,山东东营257061

出　　处：《新型炭材料》2007年第2期109-114,共6页New Carbon Materials

摘　　要：流化床催化裂化(Fluid catalytic ciracking,FCC)油浆富芳馏份(Fluid catalytic ciracking rich aromatic,FCCRF)与交联剂对苯二甲醇(1,4-benzenedimethanol,PXG)在催化剂对甲基苯磺酸(Para-toluene sulphonic acid,PTS)的作用下,加热至120℃以上,制得的沥青树脂是一种新型的热固性树脂。沥青树脂在一定条件下与炭纤维或炭纤维纸热压成型。成型料在空气中250℃-10h和300℃-2h热处理后,其热力学性能无明显变化;在强酸、强碱中处理1h^70h,质量几乎无变化;说明沥青树脂与炭纤维或炭纤维纸的复合材料热稳定性和化学稳定性尚好。沥青树脂与炭纤维或炭纤维纸的复合材料在高纯氮保护下,经950℃~1000℃热处理后制得炭/炭复合材料,由SEM观察可见炭/炭复合材料无空洞、劈裂,力学性能尚可,断口炭纤维拉出小于10μm,说明沥青树脂与炭有较强的亲和力,与炭纤维黏合很好。FCC油浆富芳馏份制备的沥青树脂,作为炭/炭复合材料的基质是可行的。A new thermosetting pitch resin consisting of condensed aromatic nuclei cross-linked with methylene bridges was prepared by polymerization of a mixture of an aromatic rich fraction from fluid catalytic cracking oils and 1,4-benzenedimethanol at 120℃ with p-toluenesulfonic acid as catalyst. Carbon fiber/resin （CFR） and carbon fiber paper/resin （CFPR） composites were prepared by the hot-pressing method. No remarkable changes in mechanical properties were found when the composites were heated at 250 ℃ for 10 h and 300 ℃ for 2 h and soaked in strong acids or bases for 1 to 70 h at room temperature, suggesting that the composites had good thermal stability and resistance to chemical attack. The CFR and CFPR specimens were converted into C/C composites without fissures or cleavages between the pitch resin carbon and carbon fibers by further heat treatment from 950 to 1000℃ under N： atmosphere. The length of carbon fiber pulled out from the matrix during fracture was of the order of 10 μm as seen in SEM photos, indicating that the pitch resin adhered well to the carbon fibers and the CFR and CFPR composites had good mechanical strength.

关 键 词：沥青树脂 复合材料 层间剪切强度 弯曲强度 

分 类 号：TB332[一般工业技术—材料科学与工程]