聚醚型环氧改性UV水性聚氨酯的制备及表征
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摘要
本文旨在合成一种聚醚型环氧丙烯酸酯改性紫外光固化水性聚氨酯树脂(WPUA-EA),并对树脂的综合性能进行一系列表征。首先以聚丙二醇二缩水甘油醚(PPGDGE)和丙烯酸(AA)作为原料,通过环氧开环酯化法,得到带有羟基和丙烯酸双键的环氧丙烯酸酯树脂(EA)。然后采用L9(34)型正交试验,考察了因子A环氧丙烯酸酯树脂(EA)、因子B聚乙二醇(PEG-600)、因子C 2,2-二羟甲基丙酸(DMPA)、因子D丙烯酸羟丙酯(HPA)对WPUAEA树脂基本性能的影响,确定EA改性WPUA的原料最优配合比,并采用FT-IR对其结构进行了表征。最后以2-羟基-4′-(2-羟乙氧基)-2-甲基苯丙酮(Irgacure 2959)作为光引发剂,采用实时红外(real time FT-IR)对WPUA-EA的紫外光固化过程进行了动力学研究。结果表明:优化原料配合比为0.05mol EA、0.05mol PEG600、0.15mol DMPA、0.3mol HPA条件下,得到的WPUA-EA在纸张的附着力为1级,黏度为9080MPa·s,柔韧性为1mm。在光引发剂2959的用量为4%(wt,质量分数)。条件下效果最好,可使WPUA-EA在光强为15mW/cm~2条件下30s内的转化率达到94.85%。
A kind of waterborne UV-curing polyurethane acrylate resin modified with epoxy acrylate(WPUAEA)was synthesized,characterized the properties of the resin.Firstly,epoxy acrylate(EA)with acrylic double bonds and hydroxyl groups was successfully synthesized from polypropylenglycol diglycidyl ether(PPGDGE)and acrylic acid(AA)via epoxy ring-opening esterification method.Secondly the effect of factor A epoxy acrylate(EA),factor B polyethylene glycol(PEG-600),factor C 2,2-bis(hydroxymethyl)propionic acid(DMPA),factor D hydroxypropyl acrylate(HPA)on the properties of WPUA-EA was investigated by L9(34)orthogonal experiment in order to determine the optimum proportion.The structure of WPUA-EA was characterized by FT-IR.Finally the UV light curing process of WPUA-EA was studied by real time FT-IR with 2-hydroxy-4′-(2-hydroxyl ethoxy)-2-methyl phenyl acetone(Irgacure 2959)as the initiator.The results showed that the optimized ratio of raw materials was 0.05 mol EA,0.05 mol PEG600,0.15 mol DMPA,0.3 mol HPA and the adhesion of WPUA-EA in paper was 1 level,its viscosity was9080 mPa·s and its flexibility was 1 mm.When the amount of photoinitiator 2959 was 4 wt%,the conversion rate of WPUA-EA was up to 94.85% within 30 sunder 15 mW/cm~2 light intensity.
A kind of waterborne UV-curing polyurethane acrylate resin modified with epoxy acrylate(WPUAEA)was synthesized,characterized the properties of the resin.Firstly,epoxy acrylate(EA)with acrylic double bonds and hydroxyl groups was successfully synthesized from polypropylenglycol diglycidyl ether(PPGDGE)and acrylic acid(AA)via epoxy ring-opening esterification method.Secondly the effect of factor A epoxy acrylate(EA),factor B polyethylene glycol(PEG-600),factor C 2,2-bis(hydroxymethyl)propionic acid(DMPA),factor D hydroxypropyl acrylate(HPA)on the properties of WPUA-EA was investigated by L9(34)orthogonal experiment in order to determine the optimum proportion.The structure of WPUA-EA was characterized by FT-IR.Finally the UV light curing process of WPUA-EA was studied by real time FT-IR with 2-hydroxy-4′-(2-hydroxyl ethoxy)-2-methyl phenyl acetone(Irgacure 2959)as the initiator.The results showed that the optimized ratio of raw materials was 0.05 mol EA,0.05 mol PEG600,0.15 mol DMPA,0.3 mol HPA and the adhesion of WPUA-EA in paper was 1 level,its viscosity was9080 mPa·s and its flexibility was 1 mm.When the amount of photoinitiator 2959 was 4 wt%,the conversion rate of WPUA-EA was up to 94.85% within 30 sunder 15 mW/cm~2 light intensity.
引文
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[2]高运福,辛秀兰,肖阳.环保型水性上光油的研制及研究进展[J].包装工程,2005,25(5):109-111.
[3]张恒,杨卓如.UV固化纸张水性上光油的研究[J].合成材料老化与应用,2006,35(3):35-36.
[4]赵景菊,曲丽雯,张晓东.环保型水性上光油的制备及性能[J].武汉工程职业技术学院学报,2009,21(2):9-12.
[5]黄怡.紫外光固化聚氨酯—丙烯酸酯水性上光油的研究[D].长沙:湖南大学,2012.
[6]苏嘉辉,黄伟,杨雪娇,等.多官能度聚氨酯丙烯酸酯水性UV树脂的合成与性能表征[J].高分子材料科学与工程,2015,31(1):13-18.
[7]邓朝霞.扩链剂对环氧聚氨酯复合乳液性能的影响[J].化工新型材料,2012,40(12):104-106.
[8]王焕,徐恒志,张威,等.环氧改性混合聚醚型水性聚氨酯的合成及性能研究[J].中国皮革,2011,40(19):22-26.
[9]台立民,姜胜男,周华利.聚氨酯对环氧树脂涂料力学性能和微观结构的影响[J].化工新型材料,2011,39(10):97-99.
[10]许戈文,熊潜生,王彤,等.水性环氧改性聚氨酯涂料的研制[J].涂料工业,1998(11):30-32.
[11]张洪文,朱静,姜彦,等.聚醚型聚氨酯/环氧树脂互穿网络聚合物的结构与性能研究[J].化工新型材料,2012,40(11):91-93.
[12]Zhan B,Li Q S,Hong W,et al.Preparation and properties of epoxy resin modified waterborne polyurethane[J].Applied Mechanics &Materials,2013,320:607-610.
[13]Li W Y,Cao Y M,Zhou X Q.Study on uv curable waterborne polyurethane modified by epoxy resin[J].Applied Mechanics&Materials,2012,249-250:842-848.
[14]Decker C.Kinetic study and new applications of uv radiation curing[J].Macromolecular Rapid Communications,2002,23(18):1067-1093.