聚碳酸酯型水性聚氨酯胶粘剂的合成及其性能研究
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摘要
以甲苯二异氰酸酯、聚碳酸酯二元醇、2,2-二羟甲基丙酸等为原料合成了聚氨酯预聚体,通过KH-792[N-(β-氨乙基)-γ-氨丙基三甲氧基硅烷]对其进行双氨基扩链,并中和乳化合成PCDL-WPU(聚碳酸酯型水性聚氨酯)胶粘剂。研究结果表明:随着KH-792加入量的增加,制备的水性聚氨酯乳液凝胶温度最高可达89℃,乳液粒径变大,胶膜的吸水率降低;当加入w(KH-792)=2%(相对于水性聚氨酯乳液总质量而言)时,扩链的乳胶膜失重5%,分解温度最高可达271℃;当加入w(KH-792)=3%时,乳胶膜拉伸强度最高可达14.2 MPa,断裂伸长率呈下降趋势。
A polyurethane prepolymer was synthesized from toluene diisocyanate,polycarbonate diols,2,2-dimethylolpropionic acid as raw materials. The polyurethane prepolymer was diamino-extended by KH-792 [N-(beta-aminoethyl)-γ-aminopropyl trimethoxysilane],and PCDL-WPU(polycarbonate waterborne polyurethane)adhesive was synthesized by neutralization and emulsification. The research results showed that,with the increaseof KH-792 addition,the temperature of the waterborne polyurethane emulsion gel could reach up to 89 ℃,theparticle size of emulsion increased,and the water absorption of the film decreased. When the w(KH-792)=2%(relative to the total mass of waterborne polyurethane emulsion)was added,the weight loss of the expandedlatex film was 5%,the decomposition temperature was up to 271 ℃. When the w(KH-792)=3% was added,themaximum tensile strength of latex film could reach 14.2 MPa,and the elongation at break tended to decrease.
A polyurethane prepolymer was synthesized from toluene diisocyanate,polycarbonate diols,2,2-dimethylolpropionic acid as raw materials. The polyurethane prepolymer was diamino-extended by KH-792 [N-(beta-aminoethyl)-γ-aminopropyl trimethoxysilane],and PCDL-WPU(polycarbonate waterborne polyurethane)adhesive was synthesized by neutralization and emulsification. The research results showed that,with the increaseof KH-792 addition,the temperature of the waterborne polyurethane emulsion gel could reach up to 89 ℃,theparticle size of emulsion increased,and the water absorption of the film decreased. When the w(KH-792)=2%(relative to the total mass of waterborne polyurethane emulsion)was added,the weight loss of the expandedlatex film was 5%,the decomposition temperature was up to 271 ℃. When the w(KH-792)=3% was added,themaximum tensile strength of latex film could reach 14.2 MPa,and the elongation at break tended to decrease.
引文
[1]李梦华,吴晓青,郑静,等.硬段对聚碳酸酯二醇型水性聚氨酯性能的影响[J].中国胶粘剂,2014,23(3):45-48.
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[3]CAKIC S M,RISTIC I S,MARINOVIC-CINCOVIC M,et al.The effects of the structure and molecular weight of themacrodiol on the properties polyurethane anionic adhesives[J].International Journal of Adhesion&Adhesives,2013,41(3):132-139.
[4]杜辉,赵雨花,王军威,等.聚碳酸酯二醇型水性聚氨酯胶粘剂的研究[J].中国胶粘剂,2008,17(8):1-4.
[5]辛浩波,马端人,潘光政.丙烯酸酯、环氧树脂对聚氨酯胶粘剂性能影响的研究[J].化工科技,2017,25(3):41-44.
[6]AND J M,PAINTER P.A comparison of hydrogen bondingand order in a polyurethane and poly(urethane-urea)andtheir blends with poly(ethylene glycol)[J].Macromolecules,2007,40(5):1546-1554.
[7]李喜龙,周向东,张军军,等.有机硅改性水性聚氨酯增深剂的合成及应用[J].印染助剂,2013,30(4):26-30.
[8]陆杰,陈新泰,尹应乐,等.铂催化剂对液体硅橡胶性能的影响研究[J].化工新型材料,2016,44(6):217-219.
[9]葛铁军,张瑾,肖尚雄,等.菲式多苯基苯基乙烯基硅油的制备及其对室温硫化硅橡胶性能的影响[J].化工新型材料,2017,45(8):86-88.
[10]TAWA T. Studies on reactive water-dispersible polyisocyanate and polyurethane-urea micelle as coatingmaterials[D].Kyoto:Kyoto University,2008.
[11]陈伟彬.聚碳酸亚丙酯型聚氨酯材料的合成[D].广州:广东工业大学,2014.
[2]MASUBUCHI T,SAKAI M,KOJIO K,et al.Structure andproperties of aliphatic poly(carbonate)glycols with differentmethylene unit length[J].e-Journal of Soft Materials,2007,3:55-63.
[3]CAKIC S M,RISTIC I S,MARINOVIC-CINCOVIC M,et al.The effects of the structure and molecular weight of themacrodiol on the properties polyurethane anionic adhesives[J].International Journal of Adhesion&Adhesives,2013,41(3):132-139.
[4]杜辉,赵雨花,王军威,等.聚碳酸酯二醇型水性聚氨酯胶粘剂的研究[J].中国胶粘剂,2008,17(8):1-4.
[5]辛浩波,马端人,潘光政.丙烯酸酯、环氧树脂对聚氨酯胶粘剂性能影响的研究[J].化工科技,2017,25(3):41-44.
[6]AND J M,PAINTER P.A comparison of hydrogen bondingand order in a polyurethane and poly(urethane-urea)andtheir blends with poly(ethylene glycol)[J].Macromolecules,2007,40(5):1546-1554.
[7]李喜龙,周向东,张军军,等.有机硅改性水性聚氨酯增深剂的合成及应用[J].印染助剂,2013,30(4):26-30.
[8]陆杰,陈新泰,尹应乐,等.铂催化剂对液体硅橡胶性能的影响研究[J].化工新型材料,2016,44(6):217-219.
[9]葛铁军,张瑾,肖尚雄,等.菲式多苯基苯基乙烯基硅油的制备及其对室温硫化硅橡胶性能的影响[J].化工新型材料,2017,45(8):86-88.
[10]TAWA T. Studies on reactive water-dispersible polyisocyanate and polyurethane-urea micelle as coatingmaterials[D].Kyoto:Kyoto University,2008.
[11]陈伟彬.聚碳酸亚丙酯型聚氨酯材料的合成[D].广州:广东工业大学,2014.