Weathering tests

Laboratory-Accelerated Versus Outdoor Weathering for Retroreflective Sheeting Specifications

“…Laboratory-accelerated exposure tests are used in specifications for retroreflective sheetings, and for other products because they provide fast results, with test times ranging from 500 to 2,500 h. Outdoor exposures have not been used because of a concern that they take too long to produce results. In addition, there is concern about the consistency of results from outdoor exposures conducted at different times (8,9).…”

Laboratory-Accelerated Versus Outdoor Weathering for Retroreflective Sheeting Specifications

“…Laboratory-accelerated exposure tests are used in specifications for retroreflective sheetings, and for other products because they provide fast results, with test times ranging from 500 to 2,500 h. Outdoor exposures have not been used because of a concern that they take too long to produce results. In addition, there is concern about the consistency of results from outdoor exposures conducted at different times (8,9).…”

Photostabilization of Polymers

“…371 Gloss loss is caused by the degradation and subsequent erosion or pitting of the coating polymer at the surface. 371 Gloss loss is caused by the degradation and subsequent erosion or pitting of the coating polymer at the surface.…”

Short-term evaluation procedures for coatings on structural steel

“…Papenroth [58] has shown that variations in UV irradiance in a weathering machine cause differences in chalking and change of gloss. The ranking of panels exposed in accelerated weathering cycles and outdoor environments often differ [49,53,54].…”

“…However, some researchers have reported good correlation [49][50][51][52][53][54]. The prohesion test described by Timmins [59] includes six periods of alternating salt spray and ambient air drying.…”

Laboratory-Accelerated Versus Outdoor Weathering for Retroreflective Sheeting Specifications

“…Laboratory-accelerated exposure tests are used in specifications for retroreflective sheetings, and for other products because they provide fast results, with test times ranging from 500 to 2,500 h. Outdoor exposures have not been used because of a concern that they take too long to produce results. In addition, there is concern about the consistency of results from outdoor exposures conducted at different times (8,9).…”

Photostabilization of Polymers

“…371 Gloss loss is caused by the degradation and subsequent erosion or pitting of the coating polymer at the surface. 371 Gloss loss is caused by the degradation and subsequent erosion or pitting of the coating polymer at the surface.…”

Short-term evaluation procedures for coatings on structural steel

“…Papenroth [58] has shown that variations in UV irradiance in a weathering machine cause differences in chalking and change of gloss. The ranking of panels exposed in accelerated weathering cycles and outdoor environments often differ [49,53,54].…”

“…However, some researchers have reported good correlation [49][50][51][52][53][54]. The prohesion test described by Timmins [59] includes six periods of alternating salt spray and ambient air drying.…”

Laboratory-Accelerated Versus Outdoor Weathering for Retroreflective Sheeting Specifications

“…Laboratory-accelerated exposure tests are used in specifications for retroreflective sheetings, and for other products because they provide fast results, with test times ranging from 500 to 2,500 h. Outdoor exposures have not been used because of a concern that they take too long to produce results. In addition, there is concern about the consistency of results from outdoor exposures conducted at different times (8,9).…”

Photostabilization of Polymers

“…371 Gloss loss is caused by the degradation and subsequent erosion or pitting of the coating polymer at the surface. 371 Gloss loss is caused by the degradation and subsequent erosion or pitting of the coating polymer at the surface.…”

Short-term evaluation procedures for coatings on structural steel

“…Papenroth [58] has shown that variations in UV irradiance in a weathering machine cause differences in chalking and change of gloss. The ranking of panels exposed in accelerated weathering cycles and outdoor environments often differ [49,53,54].…”

“…However, some researchers have reported good correlation [49][50][51][52][53][54]. The prohesion test described by Timmins [59] includes six periods of alternating salt spray and ambient air drying.…”