Synthesis and molecular interaction of tung oil‐based anionic waterborne polyurethane dispersion

2020 ◽  
Vol 137 (45) ◽  
pp. 49383
Author(s):  
Lei Jiang ◽  
Zhiyong Ren ◽  
Wentao Liu ◽  
Hao Liu ◽  
Chengshen Zhu
Keyword(s):  
Molecular Interaction ◽  
Waterborne Polyurethane ◽  
Tung Oil ◽  
Polyurethane Dispersion

scholarly journals The Puncture and Water Resistance of Polyurethane- Impregnated Fabrics after UV Weathering

Polymers ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 15
Author(s):  
Antonella Patti ◽  
Domenico Acierno
Keyword(s):  
Experimental Data ◽  
Uv Radiation ◽  
Water Resistance ◽  
Uv Light ◽  
Crosslinking Agent ◽  
Waterborne Polyurethane ◽  
Impregnation Method ◽  
Polyurethane Dispersion ◽  
Spectroscopic Analyses ◽  
Before And After

Polyurethane is a polymer adaptable to different scientific and industrial requirements; nevertheless it is also extremely susceptible to UV radiation, which compromises the physical and mechanical functionality. In this framework, our study investigated the effect of waterborne polyurethane dispersion (WPUD) applied to a polyester (PET)-based fabric, through the impregnation method, on the puncturing and water resistance of the pristine material, before and after UV weathering. Results confirmed an increment of both features in the prepared fabrics, attributed to the PUR textile treatment; but a partially loss of the gained properties in the samples due to the UV weathering. In order to improve the efficiency of the impregnating dispersions, in protecting the durability of the treated materials, the addition of different UV light stabilizers, or/and of crosslinking agent into WPUD was also tested. From the experimental data, it can be concluded that formulations based on WPUD, containing both the crosslinker and UV organic absorber, have displayed an increment of their perforation and water resistance for the treated samples with respect to the starting textile, and contemporary have preserved the features against the UV light. Finally, microscopic and spectroscopic analyses have been performed as further characterization techniques of the samples surface.

Synthesis and Characterization of a Novel Waterborne Polyurethane Modified by Tung Oil

2014 ◽  
Vol 513-517 ◽  
pp. 251-254 ◽  
Author(s):  
Zheng Xiang Wang ◽  
Ji Tong Yuan ◽  
Qi Long Liu ◽  
Xi Mei Xiao ◽  
Yun Hua Li ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Water Resistance ◽  
Waterborne Polyurethane ◽  
Synthesis And Characterization ◽  
Good Adherence ◽  
Water Contact ◽  
Tung Oil ◽  
Low Surface Energy ◽  
Ft Ir

A novel waterborne polyurethane (WPU) modified by tung oil was prepared with 2,4-tolylene diisocyanate, polyethylene glycol, dimethylol propinic acid, 1,4-butanedilo as main materials via acetone process. The structure of WPU molecule was characterized by FT-IR. Adhesive behavior for non-polar and/or low surface energy soft packing films was studied. Water resistance of films were evaluated by water contact angle and water uptake and thermal properties determined by thermal analysis instruments. The results show that the modified WPU films have good water and heat resistance. Both of modified WPUs or not have good adherence on BOPP films.

Preparation and Application of Undecylenate Based Diol for Bio-Based Waterborne Polyurethane Dispersion

2014 ◽  
Vol 955-959 ◽  
pp. 88-91 ◽  
Author(s):  
Zhe Yang ◽  
Yan Bin Zhu ◽  
Fang Peng ◽  
Chang Qing Fu
Keyword(s):  
Castor Oil ◽  
Room Temperature ◽  
Click Reaction ◽  
Waterborne Polyurethane ◽  
Chain Extender ◽  
Proton Nuclear Magnetic Resonance ◽  
Isophorone Diisocyanate ◽  
Polyurethane Dispersion ◽  
Waterborne Polyurethanes ◽  
Ft Ir

The undecylenate based diol (UAD) has been synthesized from undecylenate by esterification and thiol-ene click reaction sequently, and then it was used as a diol to prepare bio-based waterborne polyurethane (WPU) reacting with isophorone diisocyanate (IPDI) and castor oil-based carboxyl hydrophilic chain extender. The structure of undecylenate based diol was verified by hydrogen proton nuclear magnetic resonance (1H NMR). Fourier transform infrared spectroscopy (FT-IR) was used to characterize the structure of WPU film. Furthermore, particle size and viscosity were used to character apparent properties of the bio-based waterborne polyurethane dispersion. The result shows that: bio-based waterborne polyurethane dispersion is transparent and very stable under room temperature. This work provides a simple and efficient method for the preparation of fatty acids based polyols and bio-based waterborne polyurethanes.

scholarly journals Synthesis and Properties of Novel Non-Ionic Polyurethane Dispersion Based on Hydroxylated Tung Oil and Alicyclic Isocyanates

2015 ◽  
Vol 03 (01) ◽  
pp. 88-94 ◽  
Author(s):  
Xiaomin Yang ◽  
Baixia Ren ◽  
Zhiyong Ren ◽  
Lei Jiang ◽  
Wentao Liu ◽  
...  
Keyword(s):  
Tung Oil ◽  
Polyurethane Dispersion

Synthesis of MDI-50 and Tung Oil-Based Non-Ionic Waterborne Polyurethanes

2016 ◽  
Vol 848 ◽  
pp. 160-166
Author(s):  
Bai Xia Ren ◽  
Hua Fen Wang ◽  
Zhi Yong Ren ◽  
Wen Tao Liu ◽  
Lei Jiang ◽  
...  
Keyword(s):  
Surface Tension ◽  
Soft Segment ◽  
Waterborne Polyurethane ◽  
Lower Surface ◽  
Molecular Structures ◽  
Proton Nuclear Magnetic Resonance ◽  
Feed Ratio ◽  
Tung Oil ◽  
Waterborne Polyurethanes ◽  
Polyurethane Dispersions

A series of MDI-50 based non-ionic waterborne polyurethane dispersions (MDI-NPUD) were prepared by the mixing of 2,4’-diphenylmethane diisocianate (2,4’-MDI) and 4,4’-MDI (MDI-50) which reacted with hydroxylated tung oil (HTO) and polyethylene glycol-800 (PEG-800), Fourier Transform Infrared Spectroscopy (FTIR) and Proton-Nuclear Magnetic Resonance (1H-NMR) were used to characterize and analyze their molecular structures. The results indicated that MDI-50 and HTO were introduced as hard segment while PEG acted as soft segment. The surface tension, Hydrophile-Lipophile Balance (HLB) and stability were investigated. All MDI-NPUDs had much lower surface tension than the dicyclohexyl methane diisocyanate (HMDI) based NPUD (HMDI-NPUD). By changing the feed ratio of MDI-NPUD, the properties of MDI-NPUD could be controlled

Evaluation and mechanism of anionic waterborne polyurethane dispersion for chemical sand stabilisation

2016 ◽  
Vol 45 (6) ◽  
pp. 270-276 ◽  
Author(s):  
Y. Zang ◽  
W. Gong ◽  
H. Xie ◽  
Z. Du ◽  
B. Liu ◽  
...  
Keyword(s):  
Waterborne Polyurethane ◽  
Polyurethane Dispersion

Synthesis and characterization of solvent-free waterborne polyurethane dispersion with both sulfonic and carboxylic hydrophilic chain-extending agents for matt coating applications

RSC Advances ◽  
2015 ◽  
Vol 5 (130) ◽  
pp. 107413-107420 ◽  
Author(s):  
Qiwen Yong ◽  
Fuwei Nian ◽  
Bing Liao ◽  
Liping Huang ◽  
Lu Wang ◽  
...  
Keyword(s):  
Waterborne Polyurethane ◽  
Solvent Free ◽  
Synthesis And Characterization ◽  
Polyurethane Dispersion ◽  
Polyurethane Resin

Self-extinction and solvent-free waterborne polyurethane resin without the addition of extra matting agents.

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