Jiangxi Engineering Laboratory of Waterborne Coating

Nanchang, China

Jiangxi Engineering Laboratory of Waterborne Coating

Nanchang, China

Time filter

Source Type

Fu C.,Jiangxi Science and Technology Normal University | Fu C.,Jiangxi Engineering Laboratory of Waterborne Coating | Hu X.,Jiangxi Science and Technology Normal University | Hu X.,Jiangxi Engineering Laboratory of Waterborne Coating | And 4 more authors.
Progress in Organic Coatings | Year: 2015

Waterborne castor oil-based polyurethane-silica hybrid materials with chemically bonded polymer matrix and silica nanoparticles were designed and prepared. The formation of cross-linking structures in the waterborne polyurethane system was confirmed by Fourier transform infrared spectroscopy. Transmission electron microscopy images indicated that nano-silica was encapsulated by polyurethane and exhibited an apparent core-shell structure. The nano-silica in the polyurethane matrix was vital in improving both the hydrophobicity and thermal stability of the resulting hybrid polyurethane films. With increased silicone content, the roughness, hydrophobicity, and thermal stability of the films were enhanced, but the transparency of the films in the 300-800 nm region was decreased. These results can aid in the design of bio-based hydrophobic waterborne polyurethane films with favorable thermal stability and optical transmittance. © 2015 Elsevier B.V. All rights reserved.


Fu C.,Jiangxi Science and Technology Normal University | Fu C.,Jiangxi Engineering Laboratory of Waterborne Coating | Liu J.,Jiangxi Science and Technology Normal University | Liu J.,Jiangxi Engineering Laboratory of Waterborne Coating | And 3 more authors.
Progress in Organic Coatings | Year: 2015

Industrial-grade cardanol and 2-mercaptoethanol were reacted to generate hydroxyl-functionalized cardanol by UV, free-radical-initiated thiol-ene coupling between the double bond moieties of the cardanol long carbon side chain and thiol functional groups. The average hydroxyl number of the hydroxyl-functionalized cardanol was controlled by reaction time, with the hydroxyl values of this ranging within 168-201 mg KOH g-1. This cardanol was then used as a polyol to prepare cardanol-based polyurethane with hexamethylene diisocyanate and a NCO/OH ratio of 1. To compare the effect of cardanol-based polyols with the properties of cardanol-based polyurethane, cardanol modified with 10-undecylenate was used as a raw material to prepare cardanol-based polyols, including the long carbon chain of 10-undecylenate. All properties were examined, and data revealed that cardanol-based polyols including this long carbon chain can improve the hydrophobic and mechanic properties of the cardanol-based polyurethane. © 2015 Elsevier B.V. All rights reserved.


Fu C.,Jiangxi Normal University | Fu C.,Jiangxi Engineering Laboratory of Waterborne Coating | Cui B.,Jiangxi Normal University | Cui B.,Jiangxi Engineering Laboratory of Waterborne Coating | And 2 more authors.
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | Year: 2015

A new linear 10-undecenoic acid-based diol and three chain extenders with different dangling chain lengths were synthesized via thiol-ene coupling and esterification reaction. The structures of the diol and chain extenders were characterized by NMR. The structure and performance of 10-undecenoic acid-based polyurethanes were characterized by FT-IR, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and X-ray diffraction (XRD). The thermal properties results show that the dangling chains may function as plasticizer to decrease glass transition temperature (Tg) and the melting temperature (Tm) of the polyurethane, and the Tg and Tm decrease with the increase of dangling chain length. However, the presence of the dangling chains has little effect on the thermal stability of 10-undecenoic acid-based polyurethane. The XRD analysis shows that the soft segment crystallinity decreases with the increase of the dangling chains length. © 2015, Editorial Board of Polymer Materials Science & Engineering. All right reserved.

Loading Jiangxi Engineering Laboratory of Waterborne Coating collaborators
Loading Jiangxi Engineering Laboratory of Waterborne Coating collaborators