Synthesis and properties of CO2 copolymer-based waterborne polyurethane with high solid content

2021 ◽  
Vol 28 (7) ◽  
Author(s):  
Wenqi Xian ◽  
Jie Yuan ◽  
Zhengbin Xie ◽  
Wei Ou ◽  
Xiaoxuan Liu ◽  
...  
Keyword(s):  
Waterborne Polyurethane ◽  
Solid Content ◽  
High Solid Content ◽  
High Solid

scholarly journals Synthetic scheme to improve the solid content of biodegradable waterborne polyurethane by changing the association relationships of hydrophilic fragments

RSC Advances ◽  
2020 ◽  
Vol 10 (48) ◽  
pp. 28680-28694 ◽  
Author(s):  
Zhihui Yang ◽  
Guangfeng Wu
Keyword(s):  
Ethylene Glycol ◽  
Waterborne Polyurethane ◽  
Solid Content ◽  
Synthetic Method ◽  
High Solid Content ◽  
Poly Ethylene Glycol ◽  
High Solid ◽  
Molecular Weights ◽  
Waterborne Polyurethanes ◽  
Poly Ethylene

A synthetic method was developed to prepare biodegradable waterborne polyurethanes (BHPUs) with a high solid content by introducing different molecular weights of poly(ethylene glycol) (PEG) into poly(ε-caprolactone) (PCL)-based polyurethanes.

The preparation of high solid content waterborne polyurethane by special physical blending

2018 ◽  
Vol 115 ◽  
pp. 79-85 ◽  
Author(s):  
Chun-peng Chai ◽  
Yi-fei Ma ◽  
Guo-ping Li ◽  
Zhen Ge ◽  
Shao-yu Ma ◽  
...  
Keyword(s):  
Waterborne Polyurethane ◽  
Solid Content ◽  
High Solid Content ◽  
High Solid ◽  
Physical Blending

scholarly journals The Relationship between Solid Content and Particle Size Ratio of Waterborne Polyurethane

Coatings ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 401 ◽  
Author(s):  
Jinghui Hou ◽  
Yifei Ma ◽  
Zihan Zhang ◽  
Xuanhe Yang ◽  
Muhua Huang ◽  
...  
Keyword(s):  
Particle Size ◽  
Waterborne Polyurethane ◽  
Close Packing ◽  
Solid Content ◽  
Size Ratio ◽  
Face Centered Cubic ◽  
High Solid Content ◽  
High Solid ◽  
Waterborne Polyurethanes ◽  
Particle Size Ratio

A series of high solid content carboxylic acid/sulfonic acid waterborne polyurethanes was prepared by the emulsion dispersion method. The particle size and solid content were measured. By changing the particle size of the large particles to achieve different particle size ratios, high solid content waterborne polyurethanes were obtained at specific particle size ratios. When the particle size ratio was >7, 4–5 or 2–3, the aqueous polyurethane could reach a higher solid content (more than 56%). This indicated that solid content is related to particle size distribution in high solid content waterborne polyurethane. Moreover, the corresponding three-dimensional stacked models (simple cubic accumulation, face-centered cubic accumulation, cubic close packing and hexagonal closest packing) were established.

Morpholog and Conductivity of High-Solid Content Waterborne Polyurethane Dispersions with Sulfonated Polyol and Carboxylic Polyol as Compound Hydrophilic Chain Extender

2012 ◽  
Vol 472-475 ◽  
pp. 89-92
Author(s):  
Xiao Li Wei ◽  
Fa Xing Zhang ◽  
De Jun Cheng
Keyword(s):  
Average Diameter ◽  
Waterborne Polyurethane ◽  
Solid Content ◽  
Spherical Particles ◽  
Side Chain ◽  
High Solid Content ◽  
High Solid ◽  
Chain Extenders ◽  
Polyurethane Dispersions ◽  
Wide Size Distribution

In this study , a type of compound hydrophilic chain extenders composed of a polyol containing short sulfonated side chain ,designated as DHPS and dimethylolpropanoic acid( DMPA), were used to prepare high-solid content waterborne polyurethane by self-emulsification .The effect of ratio of DHPS and DMPA on morpholog and the particle size of waterborne polyurethane were analyzed. The effect of ratio of DHPS and DMPA ,the addition of CaCl2 solution and HCl solution ,dilution on conductivity of waterborne polyurethane were investigated. The results show that the WPU dispersions exhibit the spherical particles and the characteristic of wide size distribution, the average diameter and distribution became smaller and narrower with the ratio of DHPS and DMPA increasing. With an increase of ratio of DHPS and DMPA conductivity increased. At the same time , conductivity changed with the addition of CaCl2 and HCl solutions content.

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