Jul 16 2010
Research and Markets (http://www.researchandmarkets.com/research/ad12cd/polymer_bulletin) has announced the addition of Rapra Technology Ltd's new subscription "Polymer Bulletin - Stabilisers for Plastics" to their offering.
This Polymer Bulletin is a current awareness service from the Polymer Library, the worlds largest database dedicated to polymer literature. Each time the abstracts database is updated with new records (approx. every two weeks) you will be sent a bulletin alerting you to any items that relate to stabilisers for plastics.
Many polymers undergo thermo-oxidative degradation during fabrication processing. Over longer periods of time at ambient temperature polymers also deteriorate in the solid state through auto-oxidation and photo-oxidation. In outdoor applications where the materials are exposed to UV solar radiation, the energy of this radiation is sufficient to initiate photochemical reactions leading to degradation. For example in the absence of stabilisers, many polymer systems such as PP have relatively poor UV stability. Other polymers such as PE, styrenics, polyamides and PUs also benefit from UV stabilisation. The practical consequences of unchecked exposure to UV radiation are discolouration, surface crazing (formation of surface microcracks), embrittlement and loss of mechanical properties (elongation, impact strength and tensile strength). However, the effect of UV exposure can be significantly inhibited through proper selection of UV stabilisers. Over the years plastics have been commonly protected against such deterioration by the addition of a variety of light and heat stabilisers. New polymerisation technologies, interpolymer competition, economics, authorities actions, higher durability requirements, health and safety problems and quality issues are the main driving forces for changes in polymer stabilisation.
Source: http://www.researchandmarkets.com/