聚碳酸酯型形状记忆聚氨酯的合成与表征
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摘要
以碳化二亚胺改性MDI(MM103)、1,4-丁二醇(BDO)和聚碳酸1,6-己二醇酯二醇(PCDL)为原料,采用一步熔融法合成了系列聚碳酸酯型形状记忆聚氨酯弹性体(PCPU)。通过红外测试、差示扫描量热测试、硬度测试、拉伸强度测试、吸水率测试和形状记忆性能测试研究了硬段含量对材料性能的影响。结果表明,随着硬段含量的增加,PCPU的硬度逐渐增大,吸水率、拉伸强度和断裂伸长率均是先增加后减小;硬段含量为15%～20%时,PCPU的形状固定率和形状恢复率最高。
A series of polycarbonate-based shape memory polyurethane elastomers were synthesized by one-step melting method using carbodiimide-modified MDI( MM103),1,4-butanediol( BDO) and polycarbonate 1,6-hexanediol esterdiol( PCDL). The effects of hard segment content on the properties of the material were investigated by FT-IR,differential scanning calorimetry,hardness test,tensile strength test,water absorption test and shape memory test. The results show that with increase of the hard segment content,the hardness increases gradually,and the water absorption,tensile strength and elongation at break increase at first and then decrease. When the hard segment content is 15% ～20%,the shape fixation rate and shape recovery rate of( polycarbonate-based shape memory polyurethane) PCPU are the highest.
A series of polycarbonate-based shape memory polyurethane elastomers were synthesized by one-step melting method using carbodiimide-modified MDI( MM103),1,4-butanediol( BDO) and polycarbonate 1,6-hexanediol esterdiol( PCDL). The effects of hard segment content on the properties of the material were investigated by FT-IR,differential scanning calorimetry,hardness test,tensile strength test,water absorption test and shape memory test. The results show that with increase of the hard segment content,the hardness increases gradually,and the water absorption,tensile strength and elongation at break increase at first and then decrease. When the hard segment content is 15% ～20%,the shape fixation rate and shape recovery rate of( polycarbonate-based shape memory polyurethane) PCPU are the highest.
引文
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[3] Kojio K,Furukawa M,Motokucho S,et al. Structure-mechanical property relationships for poly(carbonate urethane)elastomers with novel soft segments[J]. Macromolecules,2009,42:8322-8327.
[4] Poreba R,pírkováM,BroˇzováL,et al. Aliphatic polycarbonatebased polyurethane elastomers and nanocomposites. II. Mechanical,thermal,and gas transport properties[J]. J. Appl. Polym. Sci.,2013,127:329-341.
[5] Eceiza A,Martin M D,De La Caba K,et al. Thermoplastic polyurethane elastomers based on polycarbonate diols with different soft segment molecular weight and chemical structure:mechanical and thermal properties[J]. Polym. Eng. Sci.,2008,48:297-306.
[6] Kultys A,Rogulska M,Pikus S,et al. The synthesis and characterization of new thermoplastic poly(carbonate-urethane)elastomers derived from HDI and aliphatic-aromatic chain extenders[J].Eur. Polym. J.,2009,45:2629-2643.
[7] Wu X,Liu L,Fang W,et al. Effect of hard segment architecture on shape memory properties of polycaprolactone-based polyurethane containing azobenzene[J]. J. Mater. Sci.,2016,51:1-12.
[8]赵洪祥,蒋玉湘,赵天宝,等.硬段微区结构与聚氨酯脲弹性体力学性能及耐热性的相关性[J].高分子材料科学与工程,2017,33(6):100-104.Zhao H X,Jiang Y X,Zhao T B,et al. Morphology and properties of modified polyvinyl formal[J]. Polymer Materials Science&Engineering,2017,33(6):100-104.
[9] Lee B S,Chun B C,Chung Y C,et al. Structure and thermomechanical properties of polyurethane block copolymers with shape memory effect[J]. Macromolecules,2001,34:6431-6437.
[10] Costa V,Nohales A,Félix P,et al. Structure-property relationships of polycarbonate diol-based polyurethanes as a function of soft segment content and molar mass[J]. J. Appl. Polym. Sci.,2015,132:DOI:10. 1002/app. 41704.
[11] Spirkova M,Pavlicevic J,Strachota A,et al. Novel polycarbonatebased polyurethane elastomers:composition-property relationship[J]. Eur. Polym. J.,2011,47:959-972.
[12] Dongdong P,Hengshui T. Polycarbonate polyurethane elastomers synthesized via a solvent-free and nonisocyanate melt transesterification process[J]. J. Appl. Polym. Sci.,2015,132:DOI:10.1002/app. 41377.
[13]张立伟,王贵友,胡春圃,等.催化剂对异佛尔酮二异氰酸酯制备的脂肪族聚氨酯弹性体结构和性能的影响[J].高分子材料科学与工程,2011,27(7):50-53.Zhang L W,Wang G Y,Hu C P,et al. Effect of catalyst on structure and properties of aliphatic polyurethane elastomers based on IPDI[J]. Polymer Materials Science&Engineering,2011,27(7):50-53.
[14]张成彬,向平,王鹏,等.硬段结构对IPDI型聚氨酯弹性体结构与性能的影响[J].塑料,2017,46(1):39-42.Zhang C B,Xiang P,Wang P,et al. Effect of hard segment on the structure and properties of IPDI-type polyurethane elastomer[J].Plastics,2017,46(1):39-41.
[15] Fernández-d Arlas B,Corcuera M,Runt J,et al. Block architecture influence on the structure and mechanical performance of drawn polyurethane elastomers[J]. Polym. Int.,2014,63:1278-1287.
[16]贾凤,刘建国,金卫华,等.遇水膨胀聚氨酯弹性体的研究进展[J].聚氨酯工业,2016,31(5):1-4.Jia F,Liu J G,Jin W H,et al. Research progress of water swellable polyurethane elastomer[J]. Polyurethane Industry,2016,31(5):1-4.
[17]崔航,王锋,胡剑青,等.形状记忆聚氨酯材料的研究进展[J].材料导报,2017,31(3):1-6.Chui H,Wang F,Hu J Q,et al. Research progress of shape memory polyurethane materials[J]. Materials Review,2017,31(3):1-6.