Anti-yellowing UV (ultraviolet) varnish
A technology of anti-yellowing and varnish, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of reduced anti-wear and scratch resistance, loss of protection, and deterioration of coating performance, so as to increase the flexibility of the coating , Excellent thermal stability, excellent yellowing resistance effect
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Embodiment 1
[0009] 1000 grams of aliphatic polyurethane hexaacrylate, 600 grams of butyl acrylate, 300 grams of dipropylene glycol diacrylate, 80 grams of 2-hydroxy-2-methyl-1-phenylacetone, 20 grams of 1-hydroxycyclohexyl benzophenone grams, added to the dispersing kettle, and stirred evenly.
[0010] After corresponding surface treatment, the plastic hose is coated with the UV varnish prepared in this example, and cured under a UV lamp. The UV aging performance test of the obtained UV varnish coating reaches the first grade of yellowing resistance, and is flexible and scratch-resistant. Good abrasiveness. After twelve months in the natural environment, the coating is still colorless and transparent, and no obvious changes have been seen.
Embodiment 2
[0012] Aliphatic polyurethane hexaacrylate 1200 grams, butyl acrylate 500 grams, dipropylene glycol diacrylate 200 grams, 2-hydroxy-2-methyl-1-phenylacetone 60 grams, 1-hydroxycyclohexylbenzophenone 40 grams, added to the dispersing kettle, and stirred evenly.
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