Adhesion of thermoplastic polyurethane elastomer to galvanized steel

Golaz, Basile; Michaud, Véronique; Månson, J.-Å. E.

doi:10.1016/j.ijadhadh.2011.07.009

Cited by 29 publications

(11 citation statements)

References 25 publications

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“…It shows that this adhesion promoter is principally composed of silicon and oxygen, which allows silicone rubber and NiTi to be chemically linked. Indeed, the efficiency of silane (composed too of silicon and oxygen) coupling primers to improve the adhesion in an elastomer-metal interface was already investigated in the literature, as for example in [25].…”

Section: Use Of An Adhesion Promotermentioning

confidence: 99%

Mechanical characterization and comparison of different NiTi/silicone rubber interfaces

Rey

Razan

Robin

et al. 2014

International Journal of Adhesion and Adhesives

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International audienceThis paper investigates the effects of different surface treatments on the mechanical resistance of interface between wires of NiTi shape memory alloy and silicone rubber. Three different treatments were used; primer, plasma and combination of both. The wires deoxidation effects have also been studied. In order to characterize the interface properties in such composite material, pull-out tests were carried out by means of a home-made device. This test allows us to evaluate the mechanical resistance of the interface in terms of the maximum force reached during the test. First, results show that the debonding force is not higher after the wires deoxidation. This preparation is therefore not necessary. Second, using a primer PM820 and plasma separately leads to a significant improvment of the mechanical resistance. Third, the combination of these treatments (primer followed by plasma) and a longer time of exposure to the plasma alone get the debonding force higher. Consequently, NiTi/silicone rubber interface improved only by means of plasma offers a new way to obtain biocompatible interfaces in such composite material

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Section: Use Of An Adhesion Promotermentioning

confidence: 99%

Mechanical characterization and comparison of different NiTi/silicone rubber interfaces

Rey

Razan

Robin

et al. 2014

International Journal of Adhesion and Adhesives

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“…Higher polarity of polyurethane is advantageous, e.g. for its enhanced adhesion when thermoplastic polyurethane elastomer is co-moulded with galvanised steel [4]. The polarity of polyurethanes may be increased within some limits by structural changes which control polar and dispersion interactions between chain structural segments and additional fillers, like activated carbon [5].…”

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confidence: 99%

Surface free energy of polyurethane coatings with improved hydrophobicity

Król

2012

Colloid Polym Sci

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The polarity of polyurethane coats was studied on the basis of the goniometric method for determination of wetting angle values, on the basis of calculated surface free energy (SFE) values by the van Oss–Good and Owens–Wendt methods, and on the basis of polarity measurements with the use of the 1H NMR spectra. Test polyurethanes were synthesised in the reaction of methylene diphenyl 4,4′-diisocyanate (MDI) or 3-izocyanatomethyl –3,5,5- trimethylcyclohexyl isocyanate (IPDI) and polyoxyethylene glycols or polyesters poly(ε-caprolactone) diols and poly(ethyleneadipate) diol with different molecular weights, and some diols as chain extenders, in dioxane. The type of raw material was found to significantly affect the phase structure of the obtained polyurethane elastomers and to control physical interactions within those structures, thus influencing the SFE values. Fundamental reduction in the SFE value of a coating below 28 mJ/m2 was achieved by the use of 2,2,3,3-tetrafluoro-1,4-butanediol as the urethane prepolymer chain extender.

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“…It can be explained that SCAs are effective adhesion promoters when used as integral additives or primers for paints, inks, coatings, adhesives, and sealants 11. As integral additives, they can migrate to the interface between the adhered product and the substrate, and the trifunctional SCAs function as molecular bridges at the interface of dissimilar polymer binder and substrate, resulting in the formation of chemical bonds across the interface, and the improvement of the bond strength as shown in Figure 2 12…”

Section: Resultsmentioning

confidence: 99%

Effect of coupling agent as integral blend additive on silicone rubber sealant

Liu

Dong

2012

J of Applied Polymer Sci

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Silane coupling agent (SCA) plays an important role in the improvement of adhesive properties of the silicone rubber (SR) sealant. In this study, three trifunctional silane coupling agents, (γ‐aminopropytriethoxysilane (APTES), (γ‐Glycidoxypropyl) methyldimethoxysilane (GDMMS), and 3‐(Trimethoxysilyl)propyl methacrylate (MPS), were used as blend additive in SR, and the effect of silane coupling agents on the properties of SR was studied. The results showed that the bond strength of samples with different combination of APTES/GDMMS, GDMMS/MPS, or APTES/MPS, was significantly improved than those of single silanes. Silanes with polar group make contribution to the bond strength increase of SR sealant. The highest bond strength value (0.53 MPa) was obtained using the combination of APTES and GDMMS. The study of the samples with (APTES and GDMMS) showed that the bond strength and tensile strength of SR increase with the increasing amount of SCA. Further increase in the SCA content makes the bond strength and tensile strength of SR sealant decrease. The increase in the amount of SCAs makes the failure modes of samples convert from adhesive failure to cohesive failure. Tack‐free time decreased linearly as the amount of SCA loading increased, while the hardness increased. It can be deduced that the trifunctional SCA has catalytic effect on the crosslinking action of SR sealant. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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Adhesion of thermoplastic polyurethane elastomer to galvanized steel

Cited by 29 publications

References 25 publications

Mechanical characterization and comparison of different NiTi/silicone rubber interfaces

Mechanical characterization and comparison of different NiTi/silicone rubber interfaces

Surface free energy of polyurethane coatings with improved hydrophobicity

Effect of coupling agent as integral blend additive on silicone rubber sealant

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