The characterisation of the interfacial chemistry of adhesion of rigid polyurethane foam to aluminium

Shimizu, Kyoko; Abel, Marie‐Laure; Phanopoulos, C.; Holvoet, Servaas; Watts, John F.

doi:10.1007/s10853-011-5871-3

Cited by 20 publications

(15 citation statements)

References 26 publications

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“…To combat this problem and for other purposes there has been a focus into identifying bonding mechanisms between MDI and a range of metal surfaces. Shimizu et al have investigated the interfacial chemistry between aluminum and a number of different MDI‐based polyurethane materials 3,4 …”

Section: Introductionmentioning

confidence: 99%

An interfacial chemistry study of methylene diphenyl diisocyanate and tantalum for heat exchanger applications

Bevas

Abel

Jacobs³

et al. 2020

Surface & Interface Analysis

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The interactions between oxidised tantalum and methylene diphenyl diisocyanate (MDI) have been investigated by X-ray photoelectron spectroscopy (XPS) and time of flight secondary ion mass spectrometry (ToF-SIMS). Thin (approximately 2 nm) and thick layers of polymeric MDI were deposited on tantalum; one set was cured at 200 C, the other dried at ambient temperature (20 C). The thick layers serve as a characteristic pMDI layer, and thin layers contain information relating to the nature of interfacial bonding. By careful fitting of the N1s region contributions relating to interfacial bonding have been established. All spectra show an N δ+ contribution indicative of acid-base bonding; in the case of the thick films, this is of an intermolecular nature whereas in the thin films, the more intense contribution is a result of such forces between pMDI and substrate. This is confirmed by ToF-SIMS. A lower binding energy component at ca 396 eV on the air-dried thin layer of pMDI is the result of a formal reaction between pMDI and tantalum yielding a nitride-like species in the N1s spectrum.

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Section: Introductionmentioning

confidence: 99%

An interfacial chemistry study of methylene diphenyl diisocyanate and tantalum for heat exchanger applications

Bevas

Abel

Jacobs³

et al. 2020

Surface & Interface Analysis

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“…Rigid polyurethane (RPU) foams are widely used as insulation, decorating or structural materials in industries owing to their excellent properties including high strength, remarkable thermal insulation properties, superior mechanical properties, and low density . But high flammability of pristine RPU foams limits their use in some occasions .…”

Section: Introductionmentioning

confidence: 99%

Melamine amino trimethylene phosphate as a novel flame retardant for rigid polyurethane foams with improved flame retardant, mechanical and thermal properties

Liu

Wang

2017

J of Applied Polymer Sci

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Melamine amino trimethylene phosphate (MATMP) as a novel nitrogen-phosphorus flame retardant, was synthesized by the reaction of melamine with amino trimethylene phosphonic acid (ATMP) in aqueous solution. The structure of MATMP was characterized by Fourier transform infrared spectroscopy, solid state 31 P nuclear magnetic resonance, and thermogravimetric analysis. Rigid polyurethane (RPU) foams were prepared by one-shot and free-rise method, using MATMP as a flame retardant. The flame retardant, mechanical and thermal properties of MATMP in RPU foams were studied. It is found that the RPU foam containing 15 wt % MATMP (sample RPUMA-15) can pass the UL-94 V0 test with a limiting oxygen index of 25.5%. The cone calorimeter test results show that the peak heat release rate of RPUMA-15 is reduced about 34% compared with that of untreated RPU foam. SEM results indicate that the RPU foams with MATMP can form the good and compact char during burning which provides better flame retardancy. The compressive strength of the RPU foams filled with MATMP first increases and then slightly decreases with an increase in the MATMP content comparing with that of untreated RPU foam. Moreover, thermal conductivities of the MATMP filled RPU foams are about 0.03 W/m K.

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“…As the result, chemical structure and corresponding network morphology differ in that chemical interphase from the polymer bulk. Consequently, the mechanical properties of that region also differ from the bulk …”

Section: Introductionmentioning

confidence: 99%

“…Consequently, the mechanical properties of that region also differ from the bulk. 10,11 In addition to the formation of chemical interphases, internal stresses arise in the adhesive as it shrinks during polymerization and vitrification. Kr€ uger et al conclude from Brillouin spectroscopy results on internal stresses in the contact region between the adhesive and the substrate.…”

Section: Introductionmentioning

confidence: 99%

Dynamic mechanical properties of very thin adhesive joints

Krogh

Schawe

Possart

2015

J of Applied Polymer Sci

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The effective mechanical properties of a polyurethane adhesive (oligoetherdiol, ‐triol, MDI) in gold joints (bond line thickness, dP = 35–550 µm) are studied in the linear deformation range by dynamic mechanical analysis in shear mode. These properties depend on dP: thin ones possess a higher dynamic glass transition temperature and show a narrower glass transition than the thick ones. The storage modulus rises with decreasing dP for the rubbery plateau. The results attest mechanical interphases in the polyurethane with increased crosslink density and reduced cooperative mobility than in bulk. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42058.

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The characterisation of the interfacial chemistry of adhesion of rigid polyurethane foam to aluminium

Abstract: The interfacial interactions between rigid polyurethane foam (RPUF) and aluminium have been studied to understand adhesion mechanisms. Three different blowing

Cited by 20 publications

References 26 publications

An interfacial chemistry study of methylene diphenyl diisocyanate and tantalum for heat exchanger applications

An interfacial chemistry study of methylene diphenyl diisocyanate and tantalum for heat exchanger applications

Melamine amino trimethylene phosphate as a novel flame retardant for rigid polyurethane foams with improved flame retardant, mechanical and thermal properties

Dynamic mechanical properties of very thin adhesive joints

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