UV-Curable Hybrids of Hyperbranched and Linear Polyurethane Dispersions

被引：4

作者：

Yin, Hui-Jun ^{[1
]}

Xiong, Zhu ^{[1
]}

Yan, Si-Jia ^{[1
]}

Chen, Zhong-Ming ^{[1
]}

Xiong, Yuan-Qin ^{[1
]}

Xu, Wei-Jian ^{[1
]}

机构：

[1] Hunan Univ, Coll Chem & Chem Engn, Inst Polymer Sci & Engn, Changsha 410082, Hunan, Peoples R China

来源：

JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS | 2012年 / 51卷 / 1-3期

关键词：

dispersions; hybrids; hyperbranched; polyurethane; UV; ALIPHATIC POLYESTER; MECHANICAL-PROPERTIES; WATERBORNE; PHOTOPOLYMERIZATION; COATINGS; ELASTOMERS;

D O I：

10.1080/00222348.2011.585315

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A series of UV-curable hybrids of hyperbranched and linear polyurethane dispersions (HLPUDs) were synthesized by a three-step process. Hybrids of HLPUDs were obtained by mixing acrylated hverbmnched polyurethane (HBPUA) with linear acrylated polyurethanes (LPUAs) and then being dispersed with water The high density of acrylic groups on the surface of the HBPUA is very useful for the post UV curing. The synthesis of HBPUA and the effects of the HBPUA loading on the particle size (PS) of the HLPUDs as well as the thermal and the mechanical properties of the resulting cured films were characterized by Fourier transform infrared (FTIR) spectroscopy, dynamic light scattering particle analysis, differential scanning calorimetry (DSC), dynamic mechanical analysis, thermal gravimetric analysis, and tensile measurements. The PS of the hybrids of HLPUDs were found to increase slightly from 38 to 76 run with increase of the HBP content. Compared with the pure LPUA, the mechanical properties of the hybrids were enhanced dramatically, which could be correlated to the micmstructure of the hybrids.

引用

页码：209 / 223

页数：15

共 30 条

[1] High performance UV curable polyurethane dispersions by incorporating multifunctional extender [J].