印染（2023No.2）www.cntexcloud.com异氰酸酯化氧化石墨烯/水性聚氨酯的合成及性能李晓蔚1，赵小亮2，王剑2()1.西安工程大学实验室管理处,陕西西安710048;2.西安工程大学材料工程学院,陕西西安710048摘要：以异氰酸酯化氧化石墨烯为改性剂，利用原位聚合法制备异氰酸酯化氧化石墨烯/水性聚氨酯（OCN-GO/WPU），研究了异氰酸酯化氧化石墨烯用量对改性水性聚氨酯性能的影响。结果表明，随着异氰酸酯化氧化石墨烯质量分数的增加，乳液黏度先升高后降低，胶膜热稳定性提高，疏水性得到改善，拉伸强度先升高后降低再升高，力学性能较未改性水性聚氨酯均得到提高。当异氰酸酯化氧化石墨烯质量分数为0.1%时，力学性能较好，拉伸强度为3.434MPa，断裂伸长率为934.48%。关键词：改性；原位聚合；水性聚氨酯；氧化石墨烯；异氰酸酯化；复合材料中图分类号：TS190.8文献标志码：B文章编号：1000-4017（2023）02-0042-04Synthesisandpropertiesofisocyanatedgrapheneoxide/waterbornepolyurethaneLIXiaowei1,ZHAOXiaoliang2,WANGJian2()1.LaboratoryManagementDepartment,Xi′anPolytechnicUniversity,Xi′an710048,China;2.SchoolofMaterialsEngineering,Xi′anPolytechnicUniversity,Xi′an710048,ChinaAbstract:Isocyanatedgrapheneoxide/waterbornepolyurethane(OCN-GO/WPU)ispreparedbyin-situpolymerizationwithisocyanatedgrapheneoxideasmodifier.Theeffectoftheconcentrationofisocyanatedgrapheneoxideonthepropertiesofmodifiedwaterbornepolyurethaneisstudied.Theresultsshowthatwiththeincreaseoftheconcentrationofisocyanatedgra⁃pheneoxide,theviscosityoftheemulsionfirstincreasesandthendecreases,thethermalstabilityofthefilmisimproved,thehydrophobicityisimproved,andthetensilestrengthfirstincrease,thendecrease,andthenincrease.Themechanicalproper⁃tiesoftheemulsionareimprovedcomparedwiththeunmodifiedwaterbornepolyurethane.Whenthemassfractionofisocya⁃natedgrapheneoxideis0.1%,themechanicalpropertiesaregood,thetensilestrengthis3.434MPa,andtheelongationatbreakis934.48%.Keywords:modification;in-situpolymerization;waterbornepolyurethane;grapheneoxide;isocyanation;composites收稿日期：2022-11-01；修回日期：2023-02-10作者简介：李晓蔚（1989—），女，硕士，工程师，研究方向：主要从事高分子合成...
