Flow micro-calorimetry and diffuse reflectance Fourier transform infrared spectroscopy studies in filled polyurethane adhesives by using dimethyl adipate as a model compound

Donate-Robles, Jessica; Liauw, Christopher M.; Martı́n-Martı́nez, José Miguel

doi:10.1016/j.ijadhadh.2013.09.027

Cited by 3 publications

(3 citation statements)

References 38 publications

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“…[14,[20][21][22][23] More recently, modified carbon black was added to waterborne polyurethane emulsions for increasing their mechanical properties [24] and the interactions between carbon black and model polyurethane compound were analysed by flow microcalorimetry and diffuse reflectance Fourier transform infrared spectroscopy obtaining reduced adsorption of the carbon black due to less accessible surface groups and the presence of relatively important amount of micropores. [25] The main advantages of the use carbon black as compared to other carbonaceous materials are its relatively low cost, low density and small particle size. To the best of our knowledge, the addition of carbon black to thermoplastic polyurethane for improving its thermal and rheological properties has not been considered in the existing literature yet, neither the use of an organic solvent for improving the CB dispersion in the polyurethane.…”

Section: Introductionmentioning

confidence: 99%

Effect of the carbon black content on the thermal, rheological and mechanical properties of thermoplastic polyurethanes

Álvarez-García

Martı́n-Martı́nez

2015

Journal of Adhesion Science and Technology

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Different mixtures of thermoplastic polyurethane (PU) with different amounts of nanometric carbon black (CB) were prepared by mechanical stirring in organic solvent, and their thermal, rheological, viscoelastic and mechanical properties were investigated. The rheology of the PU-CB mixtures in methyl ethyl ketone was optimized, allowing good dispersion of the CB in the polyurethane matrix once the solvent was removed; an increase in the number and size of carbon black aggregates in the polyurethane matrix was obtained by increasing the carbon black loading. Addition of carbon black improved the rheological and viscoelastic properties of the polyurethane, and the larger was the carbon black content, the higher was the storage modulus and the lower was the tanδ value. Moreover, the addition of higher amounts of CB changed the viscoelastic behaviour of the polyurethane, which became mainly elastic over all temperature range. On the other hand, the addition of CB loadings up to 12 wt% increased the thermal stability of the polyurethanes and increased the elongation-at-break without noticeable reduction in the tensile strength.

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Section: Introductionmentioning

confidence: 99%

Effect of the carbon black content on the thermal, rheological and mechanical properties of thermoplastic polyurethanes

Álvarez-García

Martı́n-Martı́nez

2015

Journal of Adhesion Science and Technology

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“…It is well known that the carbonyl group of esters interact with silanol (SiOH) groups of silica through hydrogen bonds. [32][33][34] By increasing the solubility of adipate oil in water (lowering the chain length), more molecules are available for adsorption on silica thus partially hydrophobising them and enabling them to stabilise oil-in-water emulsions.…”

Section: (V) Emulsions Of Dodecane-aqueous Adipate Stabilized By N20 Silica Particlesmentioning

confidence: 99%

Pickering emulsions stabilized by hydrophilic nanoparticles: in situ surface modification by oil

Binks

Yin

2016

Soft Matter

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We propose a novel route for the stabilization of oil-in-water Pickering emulsions using inherently hydrophilic nanoparticles. In the case of dialkyl adipate oils, in situ hydrophobisation of the particles by dissolved oil molecules in the aqueous phase enables stable emulsions to be formed. Emulsion stability is enhanced upon decreasing the chain length of the oil due to its increased solubility in the precursor aqueous phase. The oil thus acts like a surfactant in this respect in which hydrogen bonds form between the carbonyl group of the ester oil and the hydroxyl group on particle surfaces. The particles chosen include both fumed and precipitated anionic silica and cationic zirconia. Complementary experiments including relevant oil-water-solid contact angles and infra-red analysis of dried particles after contact with oil support the proposed mechanism.

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“…Recently, there are some other studies in the carbonaceous material added to the polyurethane [13][14][15][16]. For example, carbon black [17,18] can be gradually added to aqueous polyurethane materials. Since the molecular chain can also cause different physical properties of different polyurethane materials, more functional materials now can be used to produce polyurethane foam [19][20][21] and adhesive coatings, etc.…”

Section: Introductionmentioning

confidence: 99%

Study on Parameter Optimization and Mechanism of Rigid‐Flexible Coupling Underground Engineering Structure of Steel Panel and Polymer

Wang²,

Luo

et al. 2021

Advances in Civil Engineering

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Polymer grouting is carried out between the steel panel and surrounding soil in underground engineering, and the polymer material consists of isocyanates and polyols. The isocyanate/polyol composite slurry expands rapidly due to chemical reaction and solidifies immediately. Then, a dense impermeable polymer layer is formed after rapid expansion of isocyanate and polyol, which is widely used for ground reinforcement and foundation remediation. Thus, a steel panel-polymer composite structure is developed. Mechanical properties of the steel panel-polymer structure are studied. The results show that the steel panel-polymer structure exhibited excellent mechanical properties. The steel panel and polymer layer should be designed above 3 mm and 10 mm in thickness, respectively. The steel panel showed superior mechanical properties to those of polymer layers. Considering good rigidity of the steel panel and good flexibility of the polymer layer, the steel panel and polymer layer presented perfect interfacial contact. It is concluded that the mechanical properties of the whole structure were increasingly enhanced with the increase of the steel panel thickness and the structural flexibility increased with the thickness of the polymer layer. Besides, the combination of the steel panel and polymer layer could also improve the mechanical properties of this coupling structure. This study provided an initial attempt for investigating the feasibility of applying polyurethane foam to steel panels in underground engineering. The stress analysis along the grouting direction inside the prefabricated wall was conducted. It may lay the foundation for further application of polymer grouting in underground engineering.

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Flow micro-calorimetry and diffuse reflectance Fourier transform infrared spectroscopy studies in filled polyurethane adhesives by using dimethyl adipate as a model compound

Cited by 3 publications

References 38 publications

Effect of the carbon black content on the thermal, rheological and mechanical properties of thermoplastic polyurethanes

Effect of the carbon black content on the thermal, rheological and mechanical properties of thermoplastic polyurethanes

Pickering emulsions stabilized by hydrophilic nanoparticles: in situ surface modification by oil

Study on Parameter Optimization and Mechanism of Rigid‐Flexible Coupling Underground Engineering Structure of Steel Panel and Polymer

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