【摘要】 研究乙烯基单体接枝共聚改性环氧树脂用作碳纤维上浆剂的可行性。采用环氧树脂E-44为反应物,丁酮为溶剂,偶氮二异丁腈为引发剂,利用自由基聚合原理,将苯乙烯、丙烯酸、丙烯酸丁酯接枝聚合到环氧树脂分子链上,得到改性环氧树脂。测试了改性环氧树脂的红外光谱、乳液粒径分布及δ-电位、热性能,并测定了纯水与其浆膜的接触角及浆膜的力学性能。结果表明:该接枝共聚改性环氧树脂乳液粒径小,成膜具有较好的耐热性和力学性能。认为:所制的乙烯基单体接枝共聚改性环氧树脂可用于碳纤维上浆。更多还原

【Abstract】 Feasibility of vinyl monomer graft-polymerize modified epoxy resin used as carbon fiber sizing agent was studied.The modified epoxy resin was prepared with epoxy resin E-44 as reactants,butanone as solvent and azobisisobutyronitrile as initiator.Styrene,acrylic acid and butyl acrylate were grafted onto the epoxy resin chain using the free radical polymerization principle.IR spectra,distribution andδ-potential of emulsion size and thermal performance of modified epoxy resin were tested.Contact angle of pure water with sized films and mechanical property of sized films were tested.The results show that the graft-polymerize modified epoxy resin have small emulsion size and sized films have better heat resistance and mechanical property.It is considered that the prepared vinyl monomer graft-polymerize modified epoxy resin can be used in carbon fiber sizing.更多还原