Dual-curing behavior and scratch characteristics of hydroxyl functionalized urethane methacrylate oligomer for automotive clearcoats

Noh, Seung Man; Lee, Jae Woo; Nam, Joon Hyun; Byun, Ki H.; Park, Jong; Jung, Hyun Wook

doi:10.1016/j.porgcoat.2012.01.002

Cited by 58 publications

(24 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Liquid clearcoats are the most dominant form worldwide because the application techniques, as well as the chemistry, are well understood and optimized; they also have excellent performance for automotive coating. The chemical composition of the liquid clearcoats varies somewhat according to different market needs or customer specifications, but nearly all systems are based on acrylic resin backbones that are stable during storage and handling at room temperature [41].…”

Section: Clearcoatmentioning

confidence: 99%

Evolution of the Automotive Body Coating Process—A Review

et al. 2016

View full text Add to dashboard Cite

Automotive coatings and the processes used to coat automobile surfaces exemplify the avant-garde of technologies that are capable of producing durable surfaces, exceeding customers' expectations of appearance, maximizing efficiency, and meeting environmental regulations. These accomplishments are rooted in 100 years of experience, trial-and-error approaches, technique and technology advancements, and theoretical assessments. Because of advancements directed at understanding the how, why, when, and where of automobile coatings, the progress in controlling droplets and their deposition attributes, and the development of new technologies and paint chemistries, a comprehensive and up-to-date review of automobile coatings and coating technologies was considered to be of value to industrial practitioners and researchers. Overall, the critical performance factors driving the development and use of advanced automotive coatings and coating technologies are (a) aesthetic characteristics; (b) corrosion protection; (c) mass production; (d) cost and environmental requirements; and (e) appearance and durability. Although the relative importance of each of these factors is debatable, the perfection of any one at the expense of another would be unacceptable. Hence, new developments in automotive coatings are described and discussed in the following review, and then related to improvements in production technologies and paints. Modern automotive coating procedures are also discussed in detail. Finally, an extrapolation into the future of automotive coating is offered with a view of the developments and technologies needed for an increasingly efficient and more sustainable coatings industry.

show abstract

Section: Clearcoatmentioning

confidence: 99%

Evolution of the Automotive Body Coating Process—A Review

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The acrylate double bond conversion of the cured samples was determined by FTIR [8,11], using an Attenuated Total Reflectance (ATR) device equipped with a diamond crystal. For this purpose, the area of the acrylate band at 810 cm −1 was preferentially used.…”

Section: Determination Of the Acrylate Double Bond Conversion By Fourmentioning

confidence: 99%

“…In the literature, many authors assess the efficiency of their coatings by hardness measurements [7][8][9][10][11], abrasion [1][2][3]7,10], coating. It is easy to understand that a simple mechanical analysis cannot provide enough information to evaluate the damage resistance of coatings.…”

Section: Introductionmentioning

confidence: 99%

“…It is easy to understand that a simple mechanical analysis cannot provide enough information to evaluate the damage resistance of coatings. On the contrary, micro-or nano-scratch experiments, often used in the literature to assess the scratch resistance of coatings [6,[11][12][13][14], allow to evaluate all these characteristics when performed on well-defined samples, and thus provide a more comprehensive information about the resistance to damage. Thus, these tests are attractive to evaluate and compare protective coatings.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, these tests are attractive to evaluate and compare protective coatings. Nano-scratch tests were used for example by Noh et al [11] in order to determine the best curing sequence of UVthermal dual-cure coatings; whereas Bautista et al [13] used these tests to compare different nanocomposite coatings containing alumina or silica nano-fillers dispersed in various polymer matrices. These micro-or nano-scratch tests consist in applying a constant or increasing load on an indenter in contact with the surface of the sample while the latter moves.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Structure-scratch properties relationships of acrylate photo-polymerizable protective coatings for thermoplastic substrates

Prandato¹,

Melas²,

Fleury³

et al. 2015

Progress in Organic Coatings

View full text Add to dashboard Cite

International audienceThe relationships between the composition and the scratch resistance of clear photo-polymerized protective coatings for thermoplastic substrates were studied in relation with their thermomechanical properties. For this purpose, dynamic mechanical analyses of free-standing films were compared to micro-scratch tests of thick or thin coatings deposited on polycarbonate. In these experiments, the depth indented by the tip, the elastic recovery of the material, the residual depth of the scratch, and the load at which the first crack appears, were analyzed. Different coatings close in formulation were studied. First, the proportion of a specific difunctional monomer featuring a hard structure was varied in order to change the crosslinking density of the polymer network. The thermomechanical properties were consequently modified at high temperature, but remained similar at 23 degrees C, whereas at this temperature, the scratch properties of the coating evolved with its composition. The addition of 5 wt% alumina or silica nanopartides did not modify the thermomechanical properties or the scratch resistance of the coatings, even if a more concentrated filler layer was observed near the surface of the coating. Nevertheless, the consequent incorporation of a new diacrylate monomer in the polymer matrix delayed the ductile-brittle transition. Finally the substitution of petro-based monomers by slightly different bio-based compounds led to a change of the scratch behavior of the thickest coatings (150 mu m-thick), and increased the critical load for the thinnest coatings (15 mu m-thick). It comes out that micro-scratch tests allow a finer comparison of the samples

show abstract

Radiation Cure Coatings

2017

Organic Coatings

View full text Add to dashboard Cite

Dual-curing behavior and scratch characteristics of hydroxyl functionalized urethane methacrylate oligomer for automotive clearcoats

Cited by 58 publications

References 21 publications

Evolution of the Automotive Body Coating Process—A Review

Evolution of the Automotive Body Coating Process—A Review

Structure-scratch properties relationships of acrylate photo-polymerizable protective coatings for thermoplastic substrates

Radiation Cure Coatings

Contact Info

Product

Resources

About