@article{MAKHILLJEAS2019142118582,
    title = {Adhesive Strength of Primers for Automotive Repair Painting under Various
Roughness Conditions},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {14},
    number = {21},
    pages = {7795-7799},
    year = {2019},
    issn = {1816-949x},
    doi = {jeasci.2019.7795.7799},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2019.7795.7799},
    author = {Ju-Ho,Ho-Kyung and},
    keywords = {automotive,roughness,repair painting,oil-soluble primers,Adhesive strength,variation},
    abstract = {The aim of this study is to evaluate the adhesive strength of an oil-soluble primer under various
sanding conditions for automotive panel repair painting. The adhesive strengths of paint coatings with various
surfacers on steel surfaces were evaluated with variation of their surface roughness levels using various grades
of sand paper. After the sanding process to instill different degrees of roughness, the surface in each trial was
painted onto a steel plate coupon using a lacquer surfacer, a primer mixed surfacer, a surfacer with a wash primer
and a surfacer with an epoxy primer. For each sample, the adhesive strength of paint coating was evaluated with
a miniaturized tensile testing machine after the complete age-hardening of the painting over a corresponding
elapsed time of 150 days. It was found that a coupon with a rougher surface generally, exhibited higher
adhesive strength. The adhesive strength of paint coating under the as-received steel coupon (without a
sanding process) was much lower than that of the paint coatings which were sanded. The adhesive strengths
of the surfacer with a wash primer and the lacquer surface were 0.64 and 0.49 MPa, respectively. The adhesive
strength of the surfacer with a primer was found to be higher than that without a primer}
    }