2008_6_r_stevens - Chemical Blowing Agents - Reasons for...

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Chemical Blowing Agents - Reasons for use, Blowing Agents types and Specialty Products Russ Stevens Sales Development Manager Genitron Blowing Agents BPRI Conference 22th October 2008
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BPRI Conference 22th October 2008 2 What are Chemical Blowing Agents ? Can be classified as a Plastic Additive . – Used in a cross section of Polymers. – Can be used in various processing techniques, e.g. extrusion – Aid processing. – Optimisation of end product. They are Organic or Inorganic compounds . – They decompose under the influence of temperature or catalysis. – They are exothermic or endothermic in nature. – At least one of the decomposition products is a gas – A foamed cellular structure is formed within the polymer
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BPRI Conference 22th October 2008 3 Chemical Blowing Agents – application areas PVC flooring and wall covering Rubber seals Polyolefin injection moulding
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BPRI Conference 22th October 2008 4 Chemical Blowing Agents - reasons for use ? Provide textured design e.g. PVC wall coverings Improve appearance Eliminates surface imperfections e.g. Polyolefin anti-sink marks Improve Quality Reduce cycle times e.g. Polyolefin injection moulding Improve processing Creates a cushion effect e.g. Rubber diving / surfing suits Improve comfort Reduces weight ( 20 – 50 %) e.g. U-PVC cladding for housing Improve ease of handling Application Requirement Property provided by Blowing Agent
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BPRI Conference 22th October 2008 5 Chemical Blowing Agents - reasons for use ? Cost Reduction / Environmental Pressures Raw materials. – Pressure from suppliers to increase prices. Blowing Agents allows reduction in costs Improved Productivity. Pressure to increase throughput. Blowing Agents allows cycle time reduction Reduce climate impact.
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This note was uploaded on 12/09/2011 for the course CHEMISTRY 101 taught by Professor Hhsf during the Spring '11 term at National University of Singapore.

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2008_6_r_stevens - Chemical Blowing Agents - Reasons for...

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