线型遥爪聚合物TDI-PBS的合成及其改善纸张强度的研究  

Synthesis of linear telechelic polymer TDI-PBS and its performance on paper strength enhancement

作　　者：张昌辉[1] 夏雷[1] 李新平[1] 赵霞[1] 

机构地区：[1]陕西科技大学化学与化工学院

出　　处：《现代化工》2009年第5期43-45,47,共4页Modern Chemical Industry

摘　　要：以丁二酸和丁二醇为原料，采用溶液与熔融结合法合成了端羟基聚丁二酸丁二醇酯（PBS），用甲苯-2，4-二异氰酸酯（TDI）对PBS封端，合成了线性遥爪型纸张增强剂TDI—PBS，考察了该聚合物对纸张物理性能的增强效果。结果表明，采用浸渍法、当PBS相对分子质量为7500左右、TDI—PBS溶液质量分数为12％、熟化温度为100℃、熟化时间为60min时，TDI—PBS能将纸张的干强度提高35．46％，湿干强比达到22．93％（达到原纸干强的31．06％），耐破度增加1倍，撕裂度也有一定改善。The hydmxy-tailed hnear poly（butylene succinate）s（PBS） are synthesized by solution polymerization combined with melt polycondensation from succinic acid and 1,4-butanediol. Then the TDI terminated linear telechelic polyester prepolymers （TDI-PBS） are synthesized by toluene-2,4-diisocyanate（TDI） and PBS using solution polycondensation. The paper strength enhancement of TDI-PBS is investigated. The results show when the molecular weight of PBS is about 7 500 with 12w% of TDI-PBS, 60 rain of reaction time and about 100~C of reaction temperature, the dry strength of paper is enhanced by 35.46 %, the ratio of wet strength and dry strength is 22.93 %, bursting strength is heightened by 1 fold, and tearing strength is also improved.

关 键 词：聚丁二酸丁二醇酯 甲苯-2 4-二异氰酸酯 线性遥爪型聚合物 纸张增强剂 

分 类 号：TS727.2[轻工技术与工程—制浆造纸工程]