Effects of the molecular structure on the vibration reduction and properties of hyperbranched waterborne polyurethane–acrylate for damping coatings

Zhang, Qiuxue; Deng, Yunjiao; Fu, Zongwen; Zhang, Huixuan

doi:10.1002/app.47733

Cited by 12 publications

(8 citation statements)

References 39 publications

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“…Surface energy is one of useful methods to reflect the hydrophobicity of films are good or not. The calculation formula of surface energy were as follows 31,32 :

γ_{s} = γ_{s}^{d} + γ_{s}^{p}

γ_{L} ((), 1 + italiccosθ) = ((), \frac{γ_{s}^{d} γ_{L}^{d}}{γ_{s}^{d} + γ_{L}^{d}} + \frac{γ_{s}^{p} γ_{L}^{p}}{γ_{s}^{p} + γ_{L}^{p}})

…”

Section: Resultsmentioning

confidence: 99%

Hydroxyl‐terminated polybutadiene based waterborne polyurethane acrylate emulsions: Synthesis, characterization, and damping property

Deng

et al. 2020

J of Applied Polymer Sci

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A new kinds of waterborne polyurethane acrylate (WPUA) dispersions were synthesized based on isophorone diisocyanate (IPDI), hydroxyl‐terminated polybutadiene (HTPB), 1, 4‐butanediol (1, 4‐BDO), polytetramethylene ether glycol (PTMG), dimethylolpropionic acid (DMPA), 2‐ethylhexyl acrylate (EHA), and methyl methacrylate (MMA) as main raw materials. The influence of the HTPB content on the particle size, storage stability of the WPUA dispersions and the damping property of cured films were studied by using dynamic light scattering (DLS), dynamic mechanical analysis (DMA), respectively. It can be found the WPUA dispersions have a good stability and the damping temperature range of loss tangent (tan δ) >0.3 reaches a maximum (−26.6–79.14°C) when the content of HTPB is 20%. The HTPB based WPUA could be applied to damping material.

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“…Surface energy is one of useful methods to reflect the hydrophobicity of films are good or not. The calculation formula of surface energy were as follows 31,32 :

γ_{s} = γ_{s}^{d} + γ_{s}^{p}

γ_{L} ((), 1 + italiccosθ) = ((), \frac{γ_{s}^{d} γ_{L}^{d}}{γ_{s}^{d} + γ_{L}^{d}} + \frac{γ_{s}^{p} γ_{L}^{p}}{γ_{s}^{p} + γ_{L}^{p}})

…”

Section: Resultsmentioning

confidence: 99%

Hydroxyl‐terminated polybutadiene based waterborne polyurethane acrylate emulsions: Synthesis, characterization, and damping property

Deng

et al. 2020

J of Applied Polymer Sci

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“…Researchers have sought to address the problems presented by PLA and improve its comprehensive properties by chemical modification and physical blending [ 23 , 24 ]. The molecular structure of polyurethane is highly tailorable, and its glass transition temperature ( T g ) and other properties can be controlled by adjusting the proportion of soft and hard segments, as well as the types and molecular weights of the soft segments [ 25 , 26 , 27 ]. PLA has also been introduced into polyurethane molecules to modify the latter.…”

Section: Introductionmentioning

confidence: 99%

Bio-Based Polyurethane and Its Composites towards High Damping Properties

et al. 2022

IJMS

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The operation of mechanical equipment inevitably generates vibrations and noise, which are harmful to not only the human body but also to the equipment in use. Damping materials, which can convert mechanical energy into thermal energy, possess excellent damping properties in the glass transition region and can alleviate the problems caused by vibration and noise. However, these materials mainly rely on petroleum-based resources, and their glass transition temperatures (Tg) are lower than room temperature. Therefore, bio-based materials with high damping properties at room temperature must be designed for sustainable development. Herein, we demonstrate the fabrication of bio-based millable polyurethane (BMPU)/hindered phenol composites that could overcome the challenges of sustainable development and exhibit high damping properties at room temperature. BMPUs with a high Tg were prepared from modified poly (lactic acid)-based polyols, the unsaturated chain extender trimethylolpropane diallylether, and 4,4′-diphenylmethane diisocyanate, and 3,9-Bis-{1,1-dimethyl-2[β-(3-tert-butyl-4-hydroxy-5-methylphenyl-)propionyloxy]ethyl}-2,4,8,10-tetraoxaspiro [5,5]-undecane (AO-80) was added to prepare BMPU/AO-80 composites. Finally, the properties of the BMPUs and BMPU/AO-80 composites were systematically evaluated. After adding 30 phr of AO-80, the Tg and maximum loss factor (tan δmax) of BMPU/AO-80 composites increased from 7.8 °C to 13.5 °C and from 1.4 to 2.0, respectively. The tan δmax showed an improvement of 43%. Compared with other polyurethanes, the prepared BMPU/AO-80 composites exhibited higher damping properties at room temperature. This study proposes a new strategy to reduce society’s current dependence on fossil resources and design materials featuring high damping properties from sustainable raw materials.

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“…[ 23–25 ] Unlike UV‐curable coatings, polyacrylate‐based coatings have advantages such as excellent thermal stability, good weather conditions and efficient water resistance. [ 26 ] Many efforts have been made to prepare polyacrylate modified polyurethane coatings that exhibit the advantages of all individual components. [ 27–30 ]…”

Section: Introductionmentioning

confidence: 99%

Aliphatic Polyurethane Films Based on Hexamethylene Diisocyanate and Saccharides for Biocompatible Transparent Coating on Optic Medical Devices

et al. 2022

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Polyurethanes are widely used in daily life, from the textile industry to medical applications. In this study, a biocompatible and transparent coating from polyethylene glycol‐based polyurethanes including different type of saccharide (xylose as monosaccharide, sucrose as disaccharide, or starch as polysaccharide) is prepared. Prepared optically transparent polyurethanes are characterized with different instrumental analysis techniques and contact‐angle measurements. Thermogravimetric analysis data allow understanding that the synthesized saccharide based polyurethanes are resistant to high temperatures, which means that medical devices can be easily coated with one of the saccharide‐based polymers during the manufacturing process. The study results also show that synthesized polyurethane samples having a different kind of saccharides present high biocompatibility and transparency properties via In vitro cytotoxicity analysis and optic transparency tests. For xylose, sucrose, or starch containing polyurethanes, the tranmittance values are 97.72%, 85.20%, and 89.23%, respectively. In addition, scanning electron microscope images show that the samples also have smooth surfaces which can be used for proper coating of medical devices. Consequently, this manuscript addresses synthesis and characterization of the optically transparent polyurethanes based on specific saccharides for biocompatible and transparent surfaces especially in optic medical devices such as colonoscopy applications and laparoscopic detection probes.

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Effects of the molecular structure on the vibration reduction and properties of hyperbranched waterborne polyurethane–acrylate for damping coatings

Cited by 12 publications

References 39 publications

Hydroxyl‐terminated polybutadiene based waterborne polyurethane acrylate emulsions: Synthesis, characterization, and damping property

Hydroxyl‐terminated polybutadiene based waterborne polyurethane acrylate emulsions: Synthesis, characterization, and damping property

Bio-Based Polyurethane and Its Composites towards High Damping Properties

Aliphatic Polyurethane Films Based on Hexamethylene Diisocyanate and Saccharides for Biocompatible Transparent Coating on Optic Medical Devices

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