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.

Properties of High Solid Content UV Curable Waterborne Polyurethane Dispersions with Different C=C Content

2012 ◽  
Vol 535-537 ◽  
pp. 1158-1162
Author(s):  
Yong Bin Jiu ◽  
Xin Miao Zeng ◽  
Jun Hui Ji ◽  
Yu Zhai ◽  
Lian Cai Wang
Keyword(s):  
Particle Size ◽  
Mechanical Stability ◽  
Waterborne Polyurethane ◽  
Solid Content ◽  
Effect Of Temperature ◽  
Polypropylene Glycol ◽  
High Solid Content ◽  
Uv Curable ◽  
High Solid ◽  
Polyurethane Dispersions

Ultraviolet (UV) curable waterborne polyurethane(WPU) dispersions based on isophorone diisocyanate(IPDI), polypropylene glycol(PPG), dimethylolproprionic acid(DMPA) and pentaerythritol triacrylate(PETA) were prepared by the conventional method of anionic aqueous polyurethane dispersions. The structure of the ultraviolet (UV) curable WPU dispersions was studied by FT-IR. Stability, dispersion particle size and zeta-potential of the WPU dispersions were characterized. Effect of temperature on viscosity of the dispersions with different C=C content was also investigated. Results showed that all UV curable WPU dispersions had high solid content (48wt%) and showed remarkable mechanical stability. The viscosity of the dispersions decreased with temperature increasing from 20°C to 60°C. When C=C content varied from 0 to 1.05meq/g, the dispersion particle size was under 300nm, zeta potentials were less than -48.9mV.

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.

Study on Polyurethane Dispersions with PES/PPG and High-Solid Content

2013 ◽  
Vol 864-867 ◽  
pp. 588-591 ◽  
Author(s):  
Xiao Li Wei ◽  
Fa Xing Zhang
Keyword(s):  
Particle Size ◽  
Shape Memory ◽  
Solid Content ◽  
Plastic Behavior ◽  
Mass Ratio ◽  
High Solid Content ◽  
High Solid ◽  
Shape Memory Behavior ◽  
Good Shape ◽  
Polyurethane Dispersions

A series of novel stable and high-solid-content polyurethane were prepared by self-emulsification,use PES and PPG as mixed soft segments.Influence of APAETMS content and mole ratio of PES/PPG on properties of polyurethane dispersions and films were analyzed .Results show that: the cross-linked complex were multivariate distribution in particle size. With an increase of the mass ratio of PES and PPG and content of APAETMS average particles diameter of polyurethane dispersions became bigger , poly-dispersion became wider., solid content of dispersions decrease.. It is also noticed that the high-solid-content dispersions exhibit a pseudo-plastic behavior, when the mass ratio of PES and PPG is 1:3 and content of APAETMS is 1%, the solid content of dispersions is up to 55%. The film also has a good shape memory behavior.

Preparation of High Solid Content Polyurethane Emulsion with Sulfonate Hydrophilic Chain-Extending Agents

2014 ◽  
Vol 548-549 ◽  
pp. 57-60 ◽  
Author(s):  
Xiao Li Wei ◽  
Fa Xing Zhang
Keyword(s):  
Particle Size ◽  
Storage Stability ◽  
Solid Content ◽  
Spherical Particles ◽  
Acid Salt ◽  
High Solid Content ◽  
Electron Microscopic ◽  
High Solid ◽  
Low Viscosity ◽  
Stability Of Emulsion

A series of novel stable polyurethane emulsion with high-solid-content and low-viscosity were prepared by self-emulsification. They were prepared by the reaction of poly (tetrahydrofuran-co-oxidation of propylene) glycol (Ng210), isophorone isocyanate (IPDI) with 1,2-dihydroxy-3-propanesulfonic acid salt (DHPA) as hydrophilic chain-extending agents. Influence of the content of DHPA on properties of polyurethane emulsion and film were analyzed .The results show that obtained emulsion were multivariate distribution in particle size and were spherical particles by measurement of grain size and electron microscopic photo. It is noticed that with increasing content of DHPA and, average particles diameter of polyurethane emulsion became smaller, poly-dispersion became narrower and solid-content became bigger. when the content of DHPA is 7%, solide-concent of emulsion reaches 61%. In addition, Polyurethane emulsion are endowed stability of emulsion are good at high temperature and low temperature as well as storage stability.

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.

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