Thermal decomposition studies on polyurethane elastomers reinforced with polyhedral silsesquioxanes by evolved gas analysis

Pagacz, Joanna; Hebda, Edyta; Janowski, Bartłomiej; Sternik, Dariusz; Jancia, Małgorzata; Pielichowski, Krzysztof

doi:10.1016/j.polymdegradstab.2018.01.028

Cited by 55 publications

(39 citation statements)

References 42 publications

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“…This was probably due to different variations in the increasing rate of stress and strain with time according to eq. . Similar variations in K ( t ) with h ( t ) were also found by Diop et al .…”

Section: Resultssupporting

confidence: 86%

“…Thermoplastic elastomer (TPE) is a block copolymer composed of a thermoplastic resin and elastomer that has the high elasticity of rubber and the thermoplasticity of a thermoplastic resin. Because of their simple preparation method, modifiability, and recyclability, TPEs have garnered significant academic and industrial attention for a wide range of applications, such as those in the automotive industry, medical instruments, and bionics materials . Compared with other soft materials, the stress–strain relationship of TPEs is complicated, and the elastic modulus [ K ( t )] is widely used to assess their mechanical performance .…”

Section: Introductionmentioning

confidence: 99%

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Elastic modulus of thermoplastic elastomers investigated with the instantaneous volumetric strain method

Cheng

Qian

Huang

et al. 2018

J of Applied Polymer Sci

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The factors influencing the elastic modulus [K(t)] of thermoplastic elastomers (TPEs) were investigated under spherical indentation mode with the instantaneous volumetric strain method. The TPE samples were prepared by the hot‐pressing method, and the variation in K(t) was investigated at different thicknesses, loading forces, and spherical indenter radii (Rs). The results demonstrate that the K(t) values of the TPEs decreased nonlinearly with the depth–radius ratio. The sample thickness [H(t)] and R showed positive and negative relationships with K(t), respectively. However, the loading force did not exhibit any significant effect on K(t). In a certain depth–radius ratio range, K(t) had strong functional relationships with H(t), R, and indentation depth. These results provide a reference for the mechanical property investigation of elastoplastic materials. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47181.

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Section: Resultssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Elastic modulus of thermoplastic elastomers investigated with the instantaneous volumetric strain method

Cheng

Qian

Huang

et al. 2018

J of Applied Polymer Sci

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“…The (thermo‐)mechanical properties of polyurethane‐ureas can be improved by introducing silane coupling agents . Two major classes of silane coupling agents are being used in practice: the first one generally contains alkoxysilane groups or polyhedral oligomeric silsesquioxanes (POSS) combined with another functional group that allows incorporation in a polyurethane‐urea and its acrylic hybrids . A widely used silane coupling agent is 3‐aminopropyltriethoxysilane and a typical silsesquioxane is aminopropylisobutyl POSS.…”

Section: Modified Polyurethane Dispersions: Some Special Cases With Gmentioning

confidence: 99%

Water‐based polyurethane dispersions

Tennebroek

Casteren

Swaans

et al. 2018

Polymer International

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A general overview is presented of the most relevant and commercially available aqueous polyurethane dispersions (PUDs) and their typical properties. This paper starts with the chemistry and the general composition of standard PUDs and subsequently urethane–acrylic hybrid dispersions are presented with special emphasis on the relation between the obtained morphology and the final material properties. In a section regarding crosslinkable PUDs, the two most frequently applied curing mechanisms are mentioned: firstly the introduction of carbonyl groups into PUDs which can be used for curing at room temperature with amino functional compounds by formation of azomethine moieties, and secondly the introduction of unsaturated fatty acid moieties into PUDs, which enable oxidative curing at ambient conditions. The paper then continues with a section on UV‐curable, acryloyl‐functional PUDs, followed by a section on an interesting new development, namely water‐based polyurethanes with special optic and haptic properties. The paper ends with a section on recently reported modifications of PUDs, including carbon nanotube‐ and graphene‐modified PUDs, PUDs modified with silane coupling agents and PUDs modified with biodegradable moieties. © 2018 Society of Chemical Industry

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“…UV-cured polyurethane (PU) is widely used in coatings to improve the appearance, lifespan, and corrosion resistance of products [7][8][9]. However, the conventional PU coatings, namely PUs synthesized via diisocyanates and polyols with various chain length, have poor heat resistance, which will undergo severe pyrolysis when the temperature exceeds 200 • C [9][10][11]. The poor mechanical performance and chemical resistance of conventional PU coatings attributed to the low density and inadequate photosensitive groups of the PU oligomers also limit the application of PU coatings [12].…”

Section: Introductionmentioning

confidence: 99%

UV-Cured Coatings Prepared with Sulfhydryl-Terminated Branched Polyurethane and Allyl-Terminated Hyperbranched Polycarbosilane

Jiao

Zhang²,

Cheng

et al. 2020

Coatings

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The conventional polyurethane (PU) coatings have poor heat resistance, which will undergo severe pyrolysis when the temperature exceeds 200 °C. To overcome the shortcoming of conventional PU coatings, an ultraviolet (UV)-cured solvent-free hyperbranched polycarbosilane modified PU coatings was prepared by sulfhydryl-terminated polyurethane and allyl-terminated hyperbranched polycarbosilane. The initial decomposition temperature (Td5%) of the UV-cured coating ranges from 258 to 268 °C, which is obviously higher than those of the conventional PU coatings reported. The coating shows fairly low water absorption in the range of 0.6–1.36 wt% and exhibits grade 1, grade 2 and grade 3 adhesion to glass, tin plate and aluminum sheet, respectively.

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Thermal decomposition studies on polyurethane elastomers reinforced with polyhedral silsesquioxanes by evolved gas analysis

Cited by 55 publications

References 42 publications

Elastic modulus of thermoplastic elastomers investigated with the instantaneous volumetric strain method

Elastic modulus of thermoplastic elastomers investigated with the instantaneous volumetric strain method

Water‐based polyurethane dispersions

UV-Cured Coatings Prepared with Sulfhydryl-Terminated Branched Polyurethane and Allyl-Terminated Hyperbranched Polycarbosilane

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