Evaluation of accelerated weathering tests for three paint systems: a comparative study of their aging behaviour

Perrin, F.X.; Irigoyen, Mikel; Aragon, E.; Vernet, Jean

doi:10.1016/s0141-3910(01)00005-2

Cited by 53 publications

(25 citation statements)

References 11 publications

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“…Ultimately, investigations need to be carried out into the influence of other variables, such as long-term weathering of paint 26 and the effects of curing and exposure to sun and UV light since these influences may lead to mass discrimination that can be exploited by IRMS analysis. Naturally, IRMS analysis should be extended to the inclusion of 2 H-and 18 Oisotopic composition since a three-dimensional isotopic fingerprint will have a much higher discriminatory power than a one-dimensional one based on 13 C data alone.…”

Section: Discussionmentioning

confidence: 99%

¹³C‐Isotope ratio mass spectrometry as a potential tool for the forensic analysis of white architectural paint: a preliminary study

Reidy

Meier‐Augenstein

Kalin

2005

Rapid Comm Mass Spectrometry

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Paints have a dual role in society, to protect materials from environmental agents such as ultraviolet light, moisture and oxygen, and to make painted materials look more attractive. Variability in paint samples is often due to binder and pigment type within the sample. The most common resin used in decorative paints is drying oil alkyd resin, which incorporates soybean oil and vinyl acrylic based latexes. Traditional analytical methods used by forensic scientists may be able to say whether two paint samples are indistinguishable but cannot conclusively say that they both originate from the same source. To find out if isotopic composition can provide an added dimension of information, 28 different white architectural paints were analysed for (13)C abundance using isotope ratio mass spectrometry. In addition, variations in application, drying time and thickness were also investigated to assess the discriminatory power of (13)C data from white paints with an unknown history. Preliminary results indicate that this method could aid screening of paint samples.

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Section: Discussionmentioning

confidence: 99%

¹³C‐Isotope ratio mass spectrometry as a potential tool for the forensic analysis of white architectural paint: a preliminary study

Reidy

Meier‐Augenstein

Kalin

2005

Rapid Comm Mass Spectrometry

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“…4 Obviously, different artificial tests differing in UV light dose, sequence order of stress, and exposure duration can lead to different degradation phenomena. 6 Nowadays, artificial aging is generally accepted as a tool for evaluating the performance of a coating and hence will be used in this article with a specific weathering cycle to imitate natural weathering closely. Yet, assessment of performance is also a muchdiscussed topic in coating research.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical behavior of exterior wood coatings subjected to artificial weathering

2008

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Several solvent-and water-borne exterior wood coatings were artificially weathered to study their performance behavior. Penetration and layer thickness were measured on unweathered samples and compared to theoretical estimates by means of measured basic parameters of coating and substrate. Color, surface roughness, gloss, and adhesion were monitored during aging, and the latter two were also calculated and compared to their experimental values. Theoretical values of gloss, and especially those of adhesion, were less successful on an absolute scale, but were in accordance with practical values on a relative scale. The influence of solid content, drying speed, and viscosity on penetration depth manifested itself clearly both in theory and in practice. In general, solventborne coatings performed well, but some water-borne coatings also showed good performance. By measuring the characteristics of a coating as described in this article, it is possible to rank the coatings and follow their weatherability. Finally, calculation of theoretical values proved a promising method for initial screening purpose.

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“…For stress analysis, cold-rolled stainless steel strips (1.4301 grade, Hasberg, Germany) with lateral dimension of 25 3 100 mm 2 and thickness of 10 lm, were etched with ammonia/hydroperoxides (1:1 ratio) water solution (40 v %) for 2 days in order to improve the adhesion between coating and substrate. After rinsing and drying the etched steel strips, the coating solution (38 m % of PNI) was spin coated on them (30 s at 2000 rpm).…”

Section: Coatings Preparationmentioning

confidence: 99%

“…1 Particularly interesting is how the physical changes are linked to the chemical evolution of the coating as a result of degradation. [2][3][4][5] Specifically, the mechanical stability of a coating is an important factor which is expected to be preserved during its service life. It is a common experience that the hardness of clearcoats increases gradually during degradation which results in stiffer and more brittle coatings.…”

Section: Introductionmentioning

confidence: 99%

Degradation of a polyester‐urethane coating: Physical properties

Makki

Adema

Peters

et al. 2015

J Polym Sci B Polym Phys

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In this article we studied the evolution of thermomechanical properties of a polyester-urethane coating during degradation under different degradation conditions, i.e., aerobic and anaerobic conditions with and without dry/wet cycling during degradation. Dynamic mechanical and thermal analyses show that under aerobic conditions the coatings become stiffer and more brittle in the glassy state. This stiffening is probably due to the increase in the amount of hydrogen bonding and the formation of oxidized groups which increase the polarity of the material and enhance the interactions of the polymer segments. However, oxidation reactions result in a considerable decrease in cross-link density and stiffness in the rubbery state. Both changes, in the glassy and rubbery states, give rise to development of internal stresses. These stresses increase as the degradation process proceeds. Nevertheless, for samples exposed to anaerobic conditions, the stiffness remains constant in the glassy state and the cross-link density slightly increases as a result of degradation. This reconfirms the dominance of the effect of oxidation reactions on the mechanical failure of the coatings. Oxygen permeation measurements show a more-or-less time-independent diffusion coefficient and a gradual decrease in solubility of oxygen as a function of exposure time. This results in a slight decrease in oxygen permeation (mainly in the early stage of the degradation) as degradation proceeds.

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Evaluation of accelerated weathering tests for three paint systems: a comparative study of their aging behaviour

Cited by 53 publications

References 11 publications

¹³C‐Isotope ratio mass spectrometry as a potential tool for the forensic analysis of white architectural paint: a preliminary study

¹³C‐Isotope ratio mass spectrometry as a potential tool for the forensic analysis of white architectural paint: a preliminary study

Experimental and theoretical behavior of exterior wood coatings subjected to artificial weathering

Degradation of a polyester‐urethane coating: Physical properties

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Evaluation of accelerated weathering tests for three paint systems: a comparative study of their aging behaviour

Cited by 53 publications

References 11 publications

13C‐Isotope ratio mass spectrometry as a potential tool for the forensic analysis of white architectural paint: a preliminary study

13C‐Isotope ratio mass spectrometry as a potential tool for the forensic analysis of white architectural paint: a preliminary study

Experimental and theoretical behavior of exterior wood coatings subjected to artificial weathering

Degradation of a polyester‐urethane coating: Physical properties

Contact Info

Product

Resources

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¹³C‐Isotope ratio mass spectrometry as a potential tool for the forensic analysis of white architectural paint: a preliminary study

¹³C‐Isotope ratio mass spectrometry as a potential tool for the forensic analysis of white architectural paint: a preliminary study