阳离子易染共聚酯的热性能研究  

Thermal properties of cationic dyeable copolyester

作　　者：王秀华[1] 王伟星 陈连 周永刚 孟继承 姚玉元[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,浙江杭州310018 [2]绍兴市晶华高新彩色有限公司,浙江绍兴312000 [3]浙江东华纤维制造有限公司,浙江杭州311245

出　　处：《合成纤维工业》2011年第1期27-29,共3页China Synthetic Fiber Industry

基　　金：国家科技支撑计划项目课题(2007BAE28B01);浙江省重大科技专项工业项目(2008C11076)

摘　　要：在半连续大装置上合成了含第三单体间苯二甲酸乙二酯-5-磺酸钠(SIPE)、第四单体聚乙二醇(PEG)的阳离子易染共聚酯(ECDP);采用热失重分析、差示扫描量热法对ECDP的热性能进行了研究,并对ECDP切片干燥和熔融过程的特性粘数降进行了测试。结果表明:随着PEG含量的增加,ECDP的热分解温度下降,玻璃化转变温度相应降低,而冷结晶温度和熔点则受SIPE和PEG的共同影响;随着PEG含量增加,ECDP熔体停留时间对熔体特性粘数降的影响增大;PEG含量高的ECDP应选择相对低的干燥温度和较长的停留时间,以保证干燥切片的质量。A cationic dyeable copolyester（ECDP） was synthesized by adding the third monomer, 5-sodium suflo bis-（hydroxy- ethyl） isophthalate （SIPE）, and the fourth monomer, polyethylene glycol （PEG）, on a semicontinuous polymerization unit. The thermal properties of ECDP were studied by thermogravimetric analysis and differential scanning calorimetry. The intrinsic viscos- ity drop of ECDP chip was tested during the drying and melting process. The results showed that the thermal docomposition tem- perature of ECDP was decreased and the glass transition temperature was also decreased accordingly with the addition of PEG; the cold crystallization temperature and melting point were affected by the combination of SIPE and PEG; the residence time had an increasing effect on the intrinsic viscosity drop of ECDP melt while increasing PEG amount; The quality of dried chips could be ensured by selecting relatively low drying temperature and long residence time for ECDP with high PEG content.

关 键 词：共聚酯 间苯二甲酸乙二醇酯-5-磺酸钠 聚乙二醇 阳离子可染聚酯 热性能 

分 类 号：TQ342.2[化学工程—化纤工业]