聚酰胺原液着色母粒的制备及其性能  

Preparation and properties of masterbatch for polyamide dope dyeing

作　　者：李修田 宋伟广 张丽平 杜长森 付少海 LI Xiutian;SONG Weiguang;ZHANG Liping;DU Changsen;FU Shaohai(Jiangsu Engineering Research Center for Digital Textile Inkjet Printing(Jiangnan University),Wuxi,Jiangsu 214122,China;Suzhou Sunmun Technology Co.,Ltd.,Suzhou,Jiangsu 215337,China)

机构地区：[1]江苏省纺织品数字喷墨印花工程技术研究中心(江南大学),江苏无锡214122 [2]苏州世名科技股份有限公司,江苏苏州215337

出　　处：《纺织学报》2023年第11期45-51,共7页Journal of Textile Research

摘　　要：针对聚酰胺66(PA66)原液着色过程中炭黑在PA66基体中分散性差的问题,首先,将炭黑加入到含有一定质量分数的分散剂的水溶液中,采用超声波分散协同喷雾干燥技术制备了自分散炭黑(SPCB);随后将SPCB再分散于含有一定质量分数PA66盐的水溶液中,制备了PA66盐基炭黑分散体,并通过原位聚合法制备了PA66原液着色母粒;最后,通过熔融共混法制备了PA66膜。探究了分散剂结构和质量分数、炭黑质量分数、超声波处理功率和时间对PA66盐基炭黑分散体粒径、粒径分布及稳定性的影响,分析了SPCB质量分数与PA66膜性能的关系。结果表明:聚乙烯吡咯烷酮相对炭黑质量分数为15%,炭黑相对体系的质量分数为10%,超声波处理功率为1260 W,时间为80 min时,制备的PA66盐基炭黑分散体粒径最小为184.1 nm,离心稳定性和放置稳定性均在90%以上;SPCB与PA66的相容性良好,在PA66基体中分布均匀,粒径约为200 nm,当其质量分数为0.2%时,制备的PA66膜的熔融温度为259.2℃,L^(*)值为26.82。Objective The conventional dyeing of polyamide 66(PA66)has the disadvantage of poor uniformity,color depth and color fastness,and also has other problems such as serious environmental pollution and high energy consumption.Dope dyeing refers to adding colorant during and after the polymerization process to produce colored fibers during fiber spinning.In order to meet the increasingly stringent environmental requirements,the dope dyeing technology has high practical value and good prospects for development.In this research,PA66 salt-based carbon black dispersion was prepared,which was further used as a colorant in dope dyeing of PA66.Method Self-dispersible carbon black(SPCB)was prepared by combining ultrasonic dispersion with spray drying,which was then dispersed in PA66 salt solution to prepare PA66 salt-based carbon black dispersion,PA66 masterbatch was prepared by in situ polymerization method,and finally PA66 film was further prepared by melt blending method.The factors of PA66 salt-based carbon black dispersion were investigated by estimating its particle size and stability.The SPCB influence on the performance of PA66 film was analyzed.Results Among the dispersants NNO,Tween 20,SMA and polyvinylpyrrolidone(PVP),it was found PVP is the best dispersant to prepare the PA66 salt-based carbon black dispersion with small particle size and good stability.The influence of mass fraction of carbon black,ultrasonic time and power on the dispersion process was investigated.The optimum preparation process was as follows.The mass fraction of PVP to carbon black was 15%,the mass fraction of carbon black to the system was 10%,the ultrasonic treatment power was 1260 W,and the time was 80 min.The average particle size of the prepared PA66 salt-based carbon black dispersion was 184.1 nm,the centrifugal stability was 96.20%,and the placement stability was 91.85%.The spray-dried SPCB surface was successfully coated with PVP.Compared with the original carbon black,SPCB showed better self-dispersing properties with a narrow partic

关 键 词：原液着色 自分散炭黑 聚酰胺66 聚乙烯吡咯烷酮 喷雾干燥 原位聚合 

分 类 号：TS193[轻工技术与工程—纺织化学与染整工程]