Polyhedral Oligomeric Silsesquioxane (POSS) as Reinforcing Agent for Waterborne Polyurethane Coatings on Wood

Wei, Shuangying; Meng, Linlong; Liu, Wenlong; Guo, Shiwei; Zhang, Xingwen

doi:10.1590/1980-5373-mr-2018-0278

Cited by 8 publications

(4 citation statements)

References 50 publications

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“…The smaller abrasion-loss value was obtained for this sample compared to the abrasion-loss value of unfilled TPU. Similar findings were reported in recent studies where POSS nanoparticle addition promoted the abrasion resistance of the polyurethane-based composites (Mihelčič et al , 2019; Wei et al , 2019). In those studies, slightly greater abrasion efficiencies were reported compared to the present study, which may be attributed to a better distribution of the POSS nanoparticles using a solution-mixing rather than a melt-mixing technique.…”

Section: Resultssupporting

confidence: 90%

“…Similar findings were postulated in recent studies where POSS nanoparticle addition promoted the abrasion resistance of the polyurethane-based composites (Mihelčič et al, 2019;Wei et al, 2019). In these studies, slightly higher abrasion efficiencies were found relative to our results which may attributed to better distribution of POSS nanoparticles using solution mixing instead of melt-mixing technique.…”

Section: Abrasion Resistancesupporting

confidence: 91%

See 1 more Smart Citation

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Mohamed

Tirkeş

Akar³

et al. 2020

Clay miner.

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Thermoplastic polyurethane (TPU) matrix was reinforced with polyhedral oligomeric silsesquioxane (POSS) and halloysite nanotubes (HNT), both separately and combined. Composite samples were fabricated using a melt-compounding method. Characterization of the composites obtained was performed via tensile and hardness tests, melt-flow index measurements (MFI), abrasion tests, dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM) to investigate the mechanical performance, flow behaviour, tribological characteristics, thermo-mechanical response and morphological properties. The greatest tensile strength value was obtained for the smallest HNT content. Further addition of HNT resulted in agglomerations for both POSS and HNT particles. The shore hardness of TPU was enhanced by filler inclusions. The TPU/POSS composites displayed significant improvement in terms of abrasion resistance compared to TPU at lower loading levels. The DMA study showed that composites containing 0.5% POSS and 1.0% HNT displayed the greatest storage modulus. The glass-transition temperature of TPU shifted to smaller values with the addition of both nanoparticles. The HNT inclusions increased the MFI value of TPU because of their large aspect ratio. Homogeneous mixing of nanoparticles in the TPU matrix was confirmed by a SEM study of the composites. Their dispersion decreased as the concentrations of POSS and HNT increased. An adjuvant effect of POSS with HNT was achieved in their hybrid composites.

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Section: Resultssupporting

confidence: 90%

Section: Abrasion Resistancesupporting

confidence: 91%

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Mohamed

Tirkeş

Akar³

et al. 2020

Clay miner.

View full text Add to dashboard Cite

show abstract

“…The mechanism of adhesion of coatings is the condensation of free silicone hydroxyl groups in the silicone resin with the silicone hydroxyl groups of the substrate. Because there are more free silicone hydroxyl groups on the surface of wood, we believe that the coatings in this study can also be applied to the surface of wood (Wei et al 2019).…”

Section: Wear Resistancementioning

confidence: 99%

Spirocyclic alkoxysilane synthesized from rice straw ash for preparation of eco-friendly hydrophobic silicone coatings

Liu

Zhang

Ren

et al. 2022

BioRes

Self Cite

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The purpose of this study was to use biomass silicon resources in rice straw to synthesize high value-added organosilicon products to solve the problem of low utilization of rice straw and high pollution and energy consumption in the silicon chemical industry. In this work, spirocyclic alkoxysilane was successfully synthesized by an environmentally friendly method from rice straw ash for the first time. The spirocyclic alkoxysilane yield per gram of rice straw ash can reach up to 1.9 g. Spirocyclic alkoxysilane was used to modify silicone resin coating. This coating can withstand 150 applications of friction and still maintain good hydrophobic effect. The maximum water contact angle after friction can reach 104°. This study broadens the application of rice straw. Furthermore, this research lays the foundation for the improvement of energy-saving and emission reduction process of silicon chemical industry.

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“…The F_POSS formulation presented a higher temperature of maximum degradation as well compared to the industrial one. The value obtained rounded 400 °C, owing to the presence of POSS [ 76 ]. This confirmed the good dispersion and introduction of the filler into the PU system.…”

Section: Resultsmentioning

confidence: 99%

Elaboration of Thermally Performing Polyurethane Foams, Based on Biopolyols, with Thermal Insulating Applications

De Hoyos-Martinez,

Mendez,

Martinez

et al. 2024

Polymers

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In this work, biobased rigid polyurethane foams (PUFs) were developed with the aim of achieving thermal and fireproofing properties that can compete with those of the commercially available products. First, the synthesis of a biopolyol from a wood residue by means of a scaled-up process with suitable yield and reaction conditions was carried out. This biopolyol was able to substitute completely the synthetic polyols that are typically employed within a polyurethane formulation. Different formulations were developed to assess the effect of two flame retardants, namely, polyhedral oligomeric silsesquioxane (POSS) and amino polyphosphate (APP), in terms of their thermal properties and degradation and their fireproofing mechanism. The structure and the thermal degradation of the different formulations was evaluated via Fourier Transformed Infrared Spectroscopy (FTIR) and thermogravimetric analysis (TGA). Likewise, the performance of the different PUF formulations was studied and compared to that of an industrial PUF. From these results, it can be highlighted that the addition of the flame retardants into the formulation showed an improvement in the results of the UL-94 vertical burning test and the LOI. Moreover, the fireproofing performance of the biobased formulations was comparable to that of the industrial one. In addition to that, it can be remarked that the biobased formulations displayed an excellent performance as thermal insulators (0.02371–0.02149 W·m−1·K−1), which was even slightly higher than that of the industrial one.

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Polyhedral Oligomeric Silsesquioxane (POSS) as Reinforcing Agent for Waterborne Polyurethane Coatings on Wood

Cited by 8 publications

References 50 publications

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Hybrid nanocomposites of elastomeric polyurethane containing halloysite nanotubes and POSS nanoparticles: tensile, hardness, damping and abrasion performance

Spirocyclic alkoxysilane synthesized from rice straw ash for preparation of eco-friendly hydrophobic silicone coatings

Elaboration of Thermally Performing Polyurethane Foams, Based on Biopolyols, with Thermal Insulating Applications

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