Книга: Zainab Hussain,Emad Yousif and Riyadh Noaman «Photostabilization of Poly(vinyl chloride)»
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Производитель: "LAP Lambert Academic Publishing" Poly(vinyl chloride) (PVC) is undoubtedly among the most frequently used plastics; it iswidely applied in many branches of industry and building. When exposed to natural weathering, PVC deteriorates and becomes increasingly colored and brittle, with a steady decrease in mechanical properties such as tensile, elasticity, and impact resistance. Owing to its large outdoor application, PVC has to be protected against photodegradation. To prevent photodegradation reactions, there are several ways to stabilize the polymers . One can stabilize polymers by keeping the light out, Quanch excited states before photochemistry occures, or trap free radicals. This can be achieved by addind UV absorbers, quanchers, radical scavengers, metal deactivators or synergistic combinations to the polymers. ISBN:9783659632921 Издательство: "LAP Lambert Academic Publishing" (2014)
ISBN: 9783659632921 |
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Stabilizers for polymers — are used directly or by combinations to prevent the various effects such as oxidation, chain scission and uncontrolled recombinations and cross linking reactions that are caused by photo oxidation of polymers. Polymers are considered to get… … Wikipedia
