Enhancement of the adhesion strength of water-based ink binder based on waterborne polyurethane

Zhao, Linhe; Hong, Chengyu; Wang, Chuanhao; Li, Jiawei; Ren, Hongwen; Zhou, Chao

doi:10.1016/j.porgcoat.2023.107765

Cited by 9 publications

(3 citation statements)

References 30 publications

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“…This result suggested that the soft and hard segments reacted to form more number of carbamate and urea bonds. 31,32 Further, Fig. 4 shows the deconvoluted peaks of CO stretching region in the FTIR spectra of the BWPUs and Table 3 presents the relevant data.…”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of amphiphilic, biodegradable, waterborne polyurethanes without using organic solvent and catalyst

Yang

2024

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Preparation and characterization of amphiphilic, biodegradable, waterborne polyurethanes without using organic solvent and catalyst

Yang

2024

RSC Adv.

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“…In the dye loading process, dye molecules rstly adsorbed on ber surface, and then migrated and xed in the amorphous regions of both skin and core layers. Because there are double reactive groups in RB194 dye structure, it formed covalent bonds with different bers (Zhao et al, 2023). Then, a primary crosslinking network was generated in ber macromolecular chains.…”

Section: Construction Of Dual Crosslinking Networkmentioning

confidence: 99%

Durable, colored and dual crosslinking networks constructed in Lyocell cellulose structure for high-quality greener textiles

Xue,

Fang,

Shi

et al. 2024

Cellulose

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As a good alternative to natural bers and petroleum-derived bers, Lyocell bers draw increasing interests owing to its advantages of sustainable forest source, low carbon emission, high strength and comfort. However, Lyocell exhibits signi cant brillation behavior under friction, which seriously reduce product quality and limit its further development. Herein, dual crosslinking networks were innovatively constructed in Lyocell cellulose structure to enhance the interaction of cellulose macromolecular chains. Bifunctional reactive dyes were rstly loaded in cellulose chains to form a primary crosslinking network.Then, the cellulose interaction in Lyocell skin layer was further enhanced after the coating by watersoluble cationic isocyanate polymer. The mechanism was determined and results showed that durable dual crosslinking networks were formed in Lyocell skin-core structure. Dye molecules could form crosslinking structure in both of core and skin layer, and cationic polymer mainly existed on the ber skin layer to construct enhanced crosslinked network. From scanning electron microscope observation, brillation behavior of Lyocell bers was effectively prevented by dual crosslinking networks. Meanwhile, the durability was evaluated, showing that the treated fabric maintained good anti-brillation performance after washing for 50 times. Furthermore, the interaction of dyes and bers was also enhanced by the cationic polymer via electrostatic attraction force, realizing high dye utilization e ciency. Therefore, the method possesses great potential in promoting the application of Lyocell bers in greener textile.

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“…In recent years, the environmentally friendly and healthy properties of water-based printing ink [1,2] have gradually attracted increasing attention. Moreover, the market share of water-based printing ink has grown significantly, especially within the wood product printing industry.…”

Section: Introductionmentioning

confidence: 99%

Effect of TiO2@CaCO3 Waterborne Primer on the Coloring Performance of Inkjet-Printed Wood Product Coatings

Sang,

Yang

2023

Coatings

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Calcium carbonate (CaCO3) is a widely used inorganic filling pigment used in coatings, and it is known for its nontoxicity, odorlessness, and environmental friendliness. The application of CaCO3 as a filler can effectively reduce raw material costs, and optimization of the filler formula enhances the coating film performance. In this study, oak planks were prepared as substrates for water-based inkjet printing. Three composite water-based primers with different TiO2-to-CaCO3 ratios and a polyurethane resin primer were used to prepare the substrate for the printing surface. The properties of the water-based primer coating and the water-based inkjet printing coating were characterized and analyzed via Fourier-transform infrared spectroscopy, video-based contact angle analysis, and environmental scanning electron microscopy. The aim was to investigate the effects of the composite waterborne primer coatings on the ink absorption and coloring properties of the interface between wood substrates and waterborne inkjet coatings. Sample WDCC-3#, with a TiO2-to-CaCO3 ratio of 15:35, exhibited the most comprehensive characteristics. The wood surface coated with 15 g/m2 of the polyurethane resin primer and 15 g/m2 of WDCC-3# exhibited a 5.8° contact angle of the water-based ink, first-grade adhesion, 4 H hardness, 70.52 whiteness value, and a roughness of ~2.33. The surface of the printed water-based inkjet-coated substrate was uniform and smooth, featuring rounded and transparent edges of the water-based ink droplets and a small CMYK color difference value. Therefore, the composite waterborne primer, incorporating TiO2 and CaCO3 in specific ratios, can be effectively combined with waterborne polyurethane primer coatings. This combination significantly improves the interfacial compatibility between the oak surface and waterborne inkjet coatings, leading to enhanced ink absorption on the oak plank surface during printing. This results in a high degree of color reproduction and clearer printed images. Overall, this study provides valuable insights for the development of primer programs for the industrial application of waterborne digital inkjet technology on wood products.

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Enhancement of the adhesion strength of water-based ink binder based on waterborne polyurethane

Cited by 9 publications

References 30 publications

Preparation and characterization of amphiphilic, biodegradable, waterborne polyurethanes without using organic solvent and catalyst

Preparation and characterization of amphiphilic, biodegradable, waterborne polyurethanes without using organic solvent and catalyst

Durable, colored and dual crosslinking networks constructed in Lyocell cellulose structure for high-quality greener textiles

Effect of TiO2@CaCO3 Waterborne Primer on the Coloring Performance of Inkjet-Printed Wood Product Coatings

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