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ASME Press Select Proceedings

International Conference on Computer Technology and Development, 3rd (ICCTD 2011)

By
Jianhong Zhou
Jianhong Zhou
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ISBN:
9780791859919
No. of Pages:
2000
Publisher:
ASME Press
Publication date:
2011

Waste thermosetting plastics are considered to be a difficulty of recycling of polymeric materials due to its three-dimensional reticular cross-linkage structure and the complexity of the types of materials. Take the hard thermosetting polyurethane plastic which is widely used in the market as the research object and deferent from the traditional methods, this paper puts forward waste thermosetting plastics recycling process based on mechanical and physical methods. Through strong shear, extrusion, grinding and other mechanical forces combined with the frictional heat generated, not only the physical properties and morphology of the material change, but also the molecular structure and chemical properties of the material change and produce degradation. The paper has analyzed the degradation mechanism of polyurethane and influencing factors based on mechanical and physical methods. At last the reasonable parameters of effective degradation are obtained, which are combined with the actual experimental results.

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