采用丙烯酸酯(AC)对水性聚氮酯( WPU)进行改性,合成了接枝型丙烯酸酯/聚氨酯(PUA)复合乳液.随着共聚物中丙烯酸酯质量分数的增加,乳液外观由透明变为不透明,乳液粒径随之增大、分布变宽.TEM显示,PUA乳胶粒子呈现清晰的核壳结构,且形态规整,粒径分布在60～120 nm之间.FTIR测试表明,随着丙烯酸酯质量分数的增加,聚氨酯(PU)硬段氢键化作用先增强后减弱,硬段的有序度逐渐降低.DSC分析表明,当AC的质量分数低于75％时,PU、聚丙烯酸酯(PA)两组分相容性较好,只出现一个玻璃化转变温度,并且随着PA质量分数的增加逐渐升高.PA质量分数的增加,使胶膜的最大热失重速率从363℃提高至412℃,吸水率从11.3％降低至5.7％,弹性模量从16.4 MPa提高至47.6 MPa,拉伸强度从9.0 MPa提高至23.7 MPa,断裂伸长率从365％提高至408％,同时乳液的粘度下降,干燥时间变短,胶膜的附着力变好.
参考文献
| [1] | LI Fuya,FU Heqing,HUANG Hong,et al.Research Progress of the Modification of Waterborne Polyurethane Adhesive[J].Chinese Adhes,2007,16(2):45-50(in Chinese).李付亚,傅和青,黄洪,等.水性聚氨酯胶黏剂改性研究进展[J].中国胶粘剂,2007,16(2):45-50. |
| [2] | CHEN Liang,LV Mangeng.Progress in Waterborne Acrylate Modified Polyurethane[J].Paint Coat lnd,2005,35(3):39-44,63 (in Chinese).陈梁,吕满庚.丙烯酸改性水性聚氨酯研究进展[J].涂料工业,2005,35(3):39-44,63. |
| [3] | ZHANG Xudong,QU Jinqing,CHEN Huanqin.Progress in Study and Preparation of Polyurethane-acrylate Hybtid Emulsions[J].Synth Mater Aging Appl,2003,32(4):31-35(in Chinese).张旭东,瞿金清,陈焕钦.聚氨酯-丙烯酸酯复合乳液研究进展[J].合成材料老化与应用,2003,32(4):31-35. |
| [4] | Sahmitt F,Wenning A,Weiss J V.Recent Development in Aqueous Two-component Polyurethane Coating[J].Prog Org Coat,2000,(40):99-105. |
| [5] | CHEN Xiangrong,DING Xiaobin,ZHENG Zhaohui,et al.Progress in the Study and the Preparation of the Compound Emulsion of Polyurethane-Polyacrylate[J].J Funct Polym,2001,14(1):127-132(in Chinese).陈向荣,丁小斌,郑朝辉,等.聚氨酯/聚丙烯酸酯复合乳液的研究进展[J].功能高分子学报,2001,14(1):127-132. |
| [6] | CHEN Wei,ZHANG Yan,HUANG Yiping,et al.Waterborne Polyurethane Modified by Hydroxyl-Terminated Polyacrylate[J].Chinese J Appl Chem,2010,27(8):875-881 (in Chinese).陈炜,张炎,黄毅萍,等.端羟基聚丙烯酸酯改性水性聚氨酯[J].应用化学,2010,27(8):875-881. |
| [7] | CHEN Yihong,HUANG Jianying,CHU Jiayan,et al.Preparation of UV-Curable Polyurethane Acrylate[J].J Xiamen Univ,2006,45(3):371-374(in Chinese).陈一虹,黄剑莹,褚佳岩,等.聚氨酯丙烯酸酯的合成和性能研究[J].厦门大学学报,2006,45(3):371-374. |
| [8] | XIA Yuzheng,LONG Denglian,SHI Shuxian,et al.Synthesis and Characterization of Mono-Capped Polyurethane-Acrylate Macromonomer with a Vinyl Group[J].Mod Chem Ind,2009,29(5):370-374(in Chinese).夏宇正,龙登莲,石淑先,等.双键单封端聚氨酯丙烯酸大分子单体的合成及表征[J].现代化工,2009,29(5):370-374. |
| [9] | ZHU Xiaoli,JIANG Xubao,ZHANG Zhiguo,et al.Effect of Hydroxyethyl Acrylate on the Properties of Polyurethane-Acrylics Hybrid Latexes[J].Acta Chim Sin,2009,67 (8):850-856 (in Chinese).朱晓丽,姜绪宝,张志国,等.丙烯酸羟乙酯对丙烯酸酯改性水性聚氨酯性能的影响[J].化学学报,2009,67(8):850-856 |
| [10] | ZHU Zaisheng,LV Guangyong.Emulsion Copolymerization of MMA/BA in the Presence of Polyurethane Reactive Emulsifier[J].Chinese J Appl Chem,2004,21(11):1202-1204(in Chinese).朱再盛,吕广镛.聚氨酯型反应性乳化剂存在下MMA/BA的乳液聚合[J].应用化学,2004,21(11):1202-1204. |
| [11] | Chai S L,Jin M M.Comparative Study Between Core-Shell and Interpenetrating Network Structure Polyurethane/Polyacrylate Composite Emulsions[J].Eur Polym,2008,(44):3306-3313. |
| [12] | XIA Junrong,LIU Jiao,PAN Zhaoqi,et al.Effects of the Structure and Properties of Polyurethane-acrylic Hybrid Emulsion[J].J Funct Polym,2005,18(3):399-404(in Chinese).夏骏嵘,刘娇,潘肇琦,等.聚氨酯-丙烯酸酯杂化乳液结构与性能的影响[J].功能高分子学报,2005,18(3):399-404. |
| [13] | Athawale V D,Kulkarni M A.Preparation and Properties of Urethane/Acrylate Composite by Emulsion Polymerization Technique[J].Prog Org Coat,2009,(65):392-400. |
| [14] | Hirose M,Zhou J H.The Structure and Properties of Acrylic-Polyurethane Hybrid Emulsions[J].Prog Org Coat,2000,38 (1):27-34. |
| [15] | Lu Y S,Larock Richard C.New Hybrid Latexes from A Soybean Oil-Based Waterborne Polyurethane and Acrylics via Emulsion Polymerization[J].Biomacromolecules,2007,8 (10):3108-3114. |
| [16] | Luo N,Wang D N.Hydrogen-bonding Properties of Segmented Polyether Poly (urethane urea) Copolymer[J].Macromolecules,1997,30(15):4405-4409. |
| [17] | Fang S M,Gao L J.Synthesis and Characterization of Excellent Transparency Poly (urethane-methacrylate)[J].J Appl Polym Sci,2009,111:724-729. |
| [18] | LI Zhihua,ZHENG Ziqiao.Analysis in Structure of Complex Emulsion Particle of Urethane-acrylic Polymer[J].Chinese J Synth Chem,2000,8(4):339-343(in Chinese).李芝华,郑子樵.聚氨酯-聚丙烯酸树脂的合成及表征[J].合成化学,2000,8(4):339-343. |
| [19] | JIANG Zhi,YUAN Kaijun,LI Shufen,et al.Study of FTIR Spectra and Thermal Analysis of Polyurethane[J].Spectrosc Spectr Anal,2006,26 (4):624-628 (in Chinese).江治,袁开军,李疏芬,等.聚氨酯的FTIR光谱和热分析研究[J].光谱学与光谱分析,2006,26(4):624-628. |
| [20] | Kayaman A N,Demirci R.UV Curable Interpenetrating Polymer Networks Based on Acrylate/Vinylether Functionalized Urethane Oligomers[J].Radiat Phys Chem,2005,73 (5):254-262. |
| [21] | HE Manjun,ZHANG Hongdong,CHEN Weixiao.Polymer Physics[M].Shanghai:Fudan University Press,2008:107-110(in Chinese)何曼君,张红东,陈维孝.高分子物理[M].上海:复旦大学出版社,2008:107-110. |
| [22] | Seymour R W,Cooper S L.Thermal Analysis of Polyurethane Block Polymers[J].Macromolecules,1972:48-52. |
| [23] | Song C M,Yuan Q L.Effect of The Content of Urea Groups on The Particle Size in Water-borne Polyurethane or Polyurethane/Polyacrylate Dispersions[J].Colloid Polym Sci,2004,282 (6):642-645. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%