环氧改性蓖麻油基WPUA纸张施胶剂的研究
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摘要
以蓖麻油和IPDI(异佛尔酮二异氰酸酯)溶于St(苯乙烯)、BA(丙烯酸丁酯)中制备聚氨酯预聚体,再以MDEA(N-甲基-二乙醇胺)和BDO(1,4-丁二醇)扩链,后用环氧树脂E-44为改性剂,制得EWPUA(环氧树脂改性蓖麻油基阳离子型水性聚氨酯-丙烯酸酯)复合乳液。研究结果表明:环氧基成功地引入到聚合物分子链中;当w(E-44)=4%时,EWPUA乳液具有优异的表面施胶性能。以w(EWPUA)=1%进行表面施胶,纸张施胶度达54 s,抗张强度增加至33.4 N/mm~2,耐破度由89 kPa增加至166 kPa,接触角由82°增加至128°,拉伸强度由5.08 MPa增加至8.86 MPa。
The polyurethane prepolymer was prepared from castor oil and isophorone diisocyanate(IPDI)dissolved in styrene(St)and butyl acrylate(BA). Then expanded by N-methyl diethanolamine(MDEA)and 1,4-butanediol(BDO)and modified with epoxy resin E-44 as the modifier,the epoxy resin modified castor oil-based cationic waterborne polyurethane acrylate(EWPUA) composite emulsion was prepared. The research results showed that the epoxy group was successfully introduced into the polymer molecular chain. When w(E-44)=4%,the EWPUA emulsion had excellent surface sizing performance. Surface sizing with w(EWPUA)=1% had 54s sizing degree,tensile strength increased to 33.4 N/mm~2,bursting strength increased from 89 kPa to 166 kPa,contact angle increased from 82 degrees to 128 degrees,and tensile strength increased from 5.08 MPa to 8.86 MPa.
The polyurethane prepolymer was prepared from castor oil and isophorone diisocyanate(IPDI)dissolved in styrene(St)and butyl acrylate(BA). Then expanded by N-methyl diethanolamine(MDEA)and 1,4-butanediol(BDO)and modified with epoxy resin E-44 as the modifier,the epoxy resin modified castor oil-based cationic waterborne polyurethane acrylate(EWPUA) composite emulsion was prepared. The research results showed that the epoxy group was successfully introduced into the polymer molecular chain. When w(E-44)=4%,the EWPUA emulsion had excellent surface sizing performance. Surface sizing with w(EWPUA)=1% had 54s sizing degree,tensile strength increased to 33.4 N/mm~2,bursting strength increased from 89 kPa to 166 kPa,contact angle increased from 82 degrees to 128 degrees,and tensile strength increased from 5.08 MPa to 8.86 MPa.
引文
[1]王学川,宗奕珊,强涛涛.无皂蓖麻油基聚氨酯-丙烯酸酯复合乳液的制备与性能研究[J].功能材料,2014,45(15):15070-15074.
[2]黄家健,周闯,周健,等.蓖麻油基UV固化聚氨酯丙烯酸酯的合成及固化膜性能[J].高分子材料科学与工程,2016,32(4):23-29.
[3]瞿金清,沈慧芳,陈焕钦.蓖麻油聚氨酯-丙烯酸酯复合乳液的合成[J].化工学报,2005,56(1):168-173.
[4]胡国文.蓖麻油和环氧树脂改性水性聚氨酯-丙烯酸酯的合成与表征[J].精细化工,2011,28(8):812-817.
[5]赵艳娜,姬定西.含环氧基水性聚氨酯纸张表面施胶剂的制备及应用[J].功能材料,2015,46(10):10119-10122.
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[7]郭玉花,李树材,王高升,等.水性聚氨酯表面施胶剂的合成及其应用研究[J].中国造纸,2011,30(1):10-14.
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[10]张淑萍,郑国钧,沈峰.环氧树脂改性聚氨酯耐热性能的研究[J].中国胶粘剂,2006,15(12):6-9.
[11]WANG Y Y,QIU F X.,XU B B.Preparation,mechanical properties and surface morphologies of waterborne fluorinated polyurethane-acrylate[J].Progress in Organic Coatings,2013,76(5):876-883.
[12]朱伟,王芳,吕菲菲,等.环氧树脂改性聚氨酯水乳液稳定性的研究[J].涂料工业,2010,40(5):47-49.
[13]曾淼,曹有名.环氧树脂改性水性聚氨酯乳液的研究[J].聚氨酯工业,2017,32(5):56-59.
[14]KIM I H,JIN S S,CHEONG I W,et al.Seeded emulsion polymerization of methyl methacrylate using aqueous polyurethane dispersion:effect of hard segment on grafting efficiency[J].Colloids&Surfaces A Physicochemical&Engineering Aspects,2002,207(1):169-176.
[15]ADLER H J,JAHNY K,VOGT-BIRNBRICH B.Polyurethane macromers-new building blocks for acrylic hybrid emulsions with outstanding performance[J].Progress in Organic Coatings,2001,43(4):251-257.43
[2]黄家健,周闯,周健,等.蓖麻油基UV固化聚氨酯丙烯酸酯的合成及固化膜性能[J].高分子材料科学与工程,2016,32(4):23-29.
[3]瞿金清,沈慧芳,陈焕钦.蓖麻油聚氨酯-丙烯酸酯复合乳液的合成[J].化工学报,2005,56(1):168-173.
[4]胡国文.蓖麻油和环氧树脂改性水性聚氨酯-丙烯酸酯的合成与表征[J].精细化工,2011,28(8):812-817.
[5]赵艳娜,姬定西.含环氧基水性聚氨酯纸张表面施胶剂的制备及应用[J].功能材料,2015,46(10):10119-10122.
[6]马雅琦.蓖麻油型水性聚氨酯的制备及其在纸张表面增强中的应用[D].广州:华南理工大学,2012.
[7]郭玉花,李树材,王高升,等.水性聚氨酯表面施胶剂的合成及其应用研究[J].中国造纸,2011,30(1):10-14.
[8]NIU Z,BIAN F L.Synthesis and characterization of multiple cross-linking UV-curable waterborne polyurethane dispersions[J].Iran Polym.J.,2012,21(4):221-228.
[9]李艳辉.聚酯型水性聚氨酯的合成与改性研究[D].青岛:山东科技大学,2009.
[10]张淑萍,郑国钧,沈峰.环氧树脂改性聚氨酯耐热性能的研究[J].中国胶粘剂,2006,15(12):6-9.
[11]WANG Y Y,QIU F X.,XU B B.Preparation,mechanical properties and surface morphologies of waterborne fluorinated polyurethane-acrylate[J].Progress in Organic Coatings,2013,76(5):876-883.
[12]朱伟,王芳,吕菲菲,等.环氧树脂改性聚氨酯水乳液稳定性的研究[J].涂料工业,2010,40(5):47-49.
[13]曾淼,曹有名.环氧树脂改性水性聚氨酯乳液的研究[J].聚氨酯工业,2017,32(5):56-59.
[14]KIM I H,JIN S S,CHEONG I W,et al.Seeded emulsion polymerization of methyl methacrylate using aqueous polyurethane dispersion:effect of hard segment on grafting efficiency[J].Colloids&Surfaces A Physicochemical&Engineering Aspects,2002,207(1):169-176.
[15]ADLER H J,JAHNY K,VOGT-BIRNBRICH B.Polyurethane macromers-new building blocks for acrylic hybrid emulsions with outstanding performance[J].Progress in Organic Coatings,2001,43(4):251-257.43