Preparation and Performance of Waterborne Polyurethane with Different Particle Size

被引：0

作者：

Chai C.-P. ^{[1
]}

Ma Y.-F. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Beijing Institute of Technology, Beijing

来源：

Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | 2018年 / 38卷 / 04期

关键词：

Partical size distribution (PDI); Particle size; Water absorption;

D O I：

10.15918/j.tbit1001-0645.2018.04.015

中图分类号：

学科分类号：

摘要：

Carboxylic waterborne polyurethanes with different particle size and particle size distribution were prepared by two kinds of emulsification with isophorone diisocyanate(IPDI),poly(1,6-hexanediol/neopentyl glycol-alt-adipic acid) (PHNA),1,4-butanediol (BDO) and dimethylol propionic acid (DMPA) as the hydrophilic chain extending agent. The particle size and particle size distribution were measured by dynamic laser scattering method,and the stability,water absorption,tensile strength,elongation at break and gloss were determined successively. Results show that,the particle size range is from 40 nm to 340 nm,the particle size distribution (PDI) range is from 0.07 to 0.26,and different DMPA content and emulsification can lead to different partical size and PDI; among the WPUs,the highest tensile strength is 49.62 MPa with a 922% elongation at break,the least water absorption is 5.25%,and the top gloss is 87.8°; the partical size and PDI have an important influence on water absorption,tensile strength and gloss,but little on the elongation at break. © 2018, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.

引用

页码：417 / 422

页数：5

共 9 条

[1]

Wang W., Polyurethane dispersion particle size, particle size distribution and control, Coatings Technology & Abstracts, 2, pp. 3-13, (2011)

[2]

Shen H., Ma H., Xiao G., Discussion on water-borne coatings film-forming mechanism, China Coatings, 25, 6, pp. 24-27, (2010)

[3]

Dillon R.E., Matheson L.A., Bradford E.B., Sintering of synthetic latex particles, Journal of Colloid Science, 6, 2, pp. 108-117, (1951)

[4]

Voyutski S.S., Amendment to the papers by bradford, brown, and co-workers: "concerning mechanism of film formation from high polymer dispersions, Journal of Polymer Science, 32, 125, pp. 528-530, (1958)

[5]

Wang L., Study on the preparation of anionic waterborne polyurethane with high solid content and the bonding and film-forming mechanism as shoes adhesives, Xi'an: Shaanxi University of Science & Technology, (2010)

[6]

Luo X., Ge B., Feng J., Et al., Influences of DMPA contents on properties of waterborne polyurethane with different soft chain segment structures, China Adhesives, 24, 9, pp. 23-27, (2015)

[7]

Liu Z., Zhang X., Shi R., Et al., Effect of preparation technology on emulsion viscosity and particle size of waterborne polyurethane, Polymer Materials Science & Engineering, 27, 9, pp. 111-114, (2011)

[8]

Yue R., Preparation and properties of waterborne polyurethane with low water absorption ratio, (2010)

[9]

Zhang L., Preparation and characterization of low-gloss waterborne polyurethane coatings, (2015)

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