功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2012年
7期
899-903
,共5页
杨婷婷%王世荣%李祥高%张静
楊婷婷%王世榮%李祥高%張靜
양정정%왕세영%리상고%장정
脲醛树脂%微胶囊%明胶%改性%显示器件
脲醛樹脂%微膠囊%明膠%改性%顯示器件
뇨철수지%미효낭%명효%개성%현시기건
urea-formaldehyde resin%microcapsule%gelatin%modify%display device
为了改善脲醛树脂电泳微胶囊表面的形貌和强度,选择明胶对脲醛树脂微胶囊进行改性。详细研究了明胶改性脲醛树脂微胶囊的制备条件,结果表明加成阶段最优pH值为9.0~9.5,缩聚阶段为3.0~3.5,明胶在整个反应体系中的质量分数为0.5%时得到的微胶囊表面光滑、结构致密,具有较高的强度。将得到的电泳微胶囊涂布制备成原型显示器件,在15V电场驱动下,白态反射率为39.6%,黑态反射率为4.4%,对比度达到9.0,响应时间为460ms,表现了优良的显示性能,从而得到快速响应、对比度高的八段数码时钟和有源矩阵(TFT)显示器件。
為瞭改善脲醛樹脂電泳微膠囊錶麵的形貌和彊度,選擇明膠對脲醛樹脂微膠囊進行改性。詳細研究瞭明膠改性脲醛樹脂微膠囊的製備條件,結果錶明加成階段最優pH值為9.0~9.5,縮聚階段為3.0~3.5,明膠在整箇反應體繫中的質量分數為0.5%時得到的微膠囊錶麵光滑、結構緻密,具有較高的彊度。將得到的電泳微膠囊塗佈製備成原型顯示器件,在15V電場驅動下,白態反射率為39.6%,黑態反射率為4.4%,對比度達到9.0,響應時間為460ms,錶現瞭優良的顯示性能,從而得到快速響應、對比度高的八段數碼時鐘和有源矩陣(TFT)顯示器件。
위료개선뇨철수지전영미효낭표면적형모화강도,선택명효대뇨철수지미효낭진행개성。상세연구료명효개성뇨철수지미효낭적제비조건,결과표명가성계단최우pH치위9.0~9.5,축취계단위3.0~3.5,명효재정개반응체계중적질량분수위0.5%시득도적미효낭표면광활、결구치밀,구유교고적강도。장득도적전영미효낭도포제비성원형현시기건,재15V전장구동하,백태반사솔위39.6%,흑태반사솔위4.4%,대비도체도9.0,향응시간위460ms,표현료우량적현시성능,종이득도쾌속향응、대비도고적팔단수마시종화유원구진(TFT)현시기건。
In order to improve the surface morphology and strength of UF resin electrophoretic microcapsules,the microcapsules was modified by gelatin as a modifier.The preparation conditions of gelatin-UF resin electrophoretic microcapsules had been studied in this paper.The microcapsules with smooth surface,compact structure and high strength could be obtained at the optimal condition of the preparation,in which the pH is 9.0-9.5 in the process of addition reaction and 3.0-3.5 in the condensation polymerization step,respectively,when the mass fraction of the gelatin is 0.5wt% in reaction system.The model display device was prepared by the coating of microcapsules.When the applied electric field is 15V,the reflectance of the display device is 39.6% in white state,and 4.4% in black state,the contrast ratio is 9.0,and the response time is 460ms.The device shows the excellent display performance and therefore the display device of eight segment clock and active matrix which has the property of quick response and high contrast could be obtained.