Scientific Essay from the year 2003 in the subject Engineering – Civil Engineering, , course: EUROMAT 2003, language: English, abstract: Laser cleaning of polychrome surfaces is currently problematic due to the fact, that laser
irradiation can cause damage of the paint layers. A test program was worked out to
analyse the chemical and physical background of these typical “pigment blackening
effects”. The analytical methods ESEM, XRD, DTA, FTIR and NMR were used to
describe the reactions of inorganic pigments and organic binding media caused by laser
irradiation. The used laser system is commercially available, is currently used for the
cleaning of natural stone surfaces and works at a wavelength of 1064 nm. The
discoloration of pigments and paint layers was documented by colour measurement.
Further the measurement of discoloration thresholds of energy density (of pigments and
paint layers) was a main part of the research.
irradiation can cause damage of the paint layers. A test program was worked out to
analyse the chemical and physical background of these typical “pigment blackening
effects”. The analytical methods ESEM, XRD, DTA, FTIR and NMR were used to
describe the reactions of inorganic pigments and organic binding media caused by laser
irradiation. The used laser system is commercially available, is currently used for the
cleaning of natural stone surfaces and works at a wavelength of 1064 nm. The
discoloration of pigments and paint layers was documented by colour measurement.
Further the measurement of discoloration thresholds of energy density (of pigments and
paint layers) was a main part of the research.
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ภาษา อังกฤษ ● รูป PDF ● หน้า 5 ● ISBN 9783638063104 ● ขนาดไฟล์ 2.6 MB ● สำนักพิมพ์ GRIN Verlag ● เมือง München ● ประเทศ DE ● การตีพิมพ์ 2008 ● ฉบับ 1 ● ที่สามารถดาวน์โหลดได้ 24 เดือน ● เงินตรา EUR ● ID 3619689 ● ป้องกันการคัดลอก ไม่มี
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