三元共聚对位芳纶的聚合
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摘要
研究了对苯二胺与对苯二酰氯在N-甲基吡咯烷酮/氯化钙体系中加入3,4’-二氨基二苯醚为第三单体的三元共聚反应。考察反应时间、反应温度、第三单体用量、单体浓度和CaCl_2用量对共聚物对数粘度的影响。结果表明,在N-甲基吡咯烷酮/氯化钙溶剂体系中,单体浓度为(0. 35～0. 40) mol·L~(-1),单体物质的量分数为25%,首先将温度设定为(-10～-5)℃,待溶液黏稠时将温度升高到(75～80)℃,时间(60～80) min,CaCl_2与-2NH_2物质的量比0. 4～0. 6时,可获得高比浓对数粘度的聚合物。
Copolymer of p-phenylenediamine and terephthaloyl dichloride in solvent of N-methyl pyrrolidone/CaCl_2 was investigated with 3,4'-diaminodiphenyl ether added as a third monomer. Effects of reaction time,reaction temperature,dosage of the third monomers,concentration of monomer and dosage of CaCl_2 on inherent viscosity of the copolymer were discussed. Results showed that polymer of high inherent viscosity was obtained when monomer concentration was(0. 35 ～ 0. 40) mol · L~(-1) and monomer mass fraction was 25% in solvent of N-methyl pyrrolidone/CaCl_2. Temperature was set to(-10 ～-5) ℃and rose to(75 ～ 80) ℃ when solution was viscous,and molar ratio of CaCl_2 to-2NH_2 was 0. 4 ～ 0. 6.
Copolymer of p-phenylenediamine and terephthaloyl dichloride in solvent of N-methyl pyrrolidone/CaCl_2 was investigated with 3,4'-diaminodiphenyl ether added as a third monomer. Effects of reaction time,reaction temperature,dosage of the third monomers,concentration of monomer and dosage of CaCl_2 on inherent viscosity of the copolymer were discussed. Results showed that polymer of high inherent viscosity was obtained when monomer concentration was(0. 35 ～ 0. 40) mol · L~(-1) and monomer mass fraction was 25% in solvent of N-methyl pyrrolidone/CaCl_2. Temperature was set to(-10 ～-5) ℃and rose to(75 ～ 80) ℃ when solution was viscous,and molar ratio of CaCl_2 to-2NH_2 was 0. 4 ～ 0. 6.
引文
[1]Yang H H. Aromatic high-strength fibers[M]. New York:Wiley,1989.
[2]于燕生,周其痒,赵安赤,等.聚芳酰胺共缩聚改性的研究[J].高分子材料科学与工程,1989,9(5):10-16.
[3]钦徽民,范忠辉.改性PPTA四元共缩聚聚合体的制备与性能研究[J].中国纺织大学报,1996. 22(4):41-46.Qin Weiming,Fan Zhonghui. The preparation and natural study of modified PPTA tetra-copolymer[J]. Journal of China Textile University,1996. 22(4):41-46.
[4]王曙中,王庆瑞,刘兆峰.高科技纤维概论[M].上海:中国纺织大学出版社,2002.
[5]尚建勋.不同溶剂体系下含氯对位芳香族聚酰胺的合成及纺丝性能研究[D].上海:东华大学,2015.
[6]曹煜彤,戴信飞,胡祖明,等.聚对苯二甲酰对苯二胺三元共聚物溶液的流变性[J].东华大学学报,2008,(5):545-548.Cao Yutong,Dai Xinfei,Hu Zuming,et al. Rheological property of PPTA copolymer solution[J]. Journal of Donghua University,2008,(5):545-548.
[2]于燕生,周其痒,赵安赤,等.聚芳酰胺共缩聚改性的研究[J].高分子材料科学与工程,1989,9(5):10-16.
[3]钦徽民,范忠辉.改性PPTA四元共缩聚聚合体的制备与性能研究[J].中国纺织大学报,1996. 22(4):41-46.Qin Weiming,Fan Zhonghui. The preparation and natural study of modified PPTA tetra-copolymer[J]. Journal of China Textile University,1996. 22(4):41-46.
[4]王曙中,王庆瑞,刘兆峰.高科技纤维概论[M].上海:中国纺织大学出版社,2002.
[5]尚建勋.不同溶剂体系下含氯对位芳香族聚酰胺的合成及纺丝性能研究[D].上海:东华大学,2015.
[6]曹煜彤,戴信飞,胡祖明,等.聚对苯二甲酰对苯二胺三元共聚物溶液的流变性[J].东华大学学报,2008,(5):545-548.Cao Yutong,Dai Xinfei,Hu Zuming,et al. Rheological property of PPTA copolymer solution[J]. Journal of Donghua University,2008,(5):545-548.