Production and properties of highly oriented polypropylene by die drawing | Zendy

Taraiya A. K. | Zendy; Richardson A. | Zendy; Ward I. M. | Zendy

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Production and properties of highly oriented polypropylene by die drawing

Author(s) -

Taraiya A. K.,

Richardson A.,

Ward I. M.

Publication year - 1987

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1987.070330723

Subject(s) - polypropylene , die (integrated circuit) , materials science , modulus , composite material , atmospheric temperature range , relaxation (psychology) , dynamic mechanical analysis , young's modulus , dynamic modulus , thermodynamics , polymer , nanotechnology , physics , psychology , social psychology

A comprehensive examination of the die‐drawing behavior of polypropylene has been carried out, examining the effects of draw temperature, haul‐off speed, and initial billet size. A range of oriented products was obtained and characterized, primarily by the determination of Young's modulus at room temperature, the maximum modulus being 20 GPa for a draw ratio R A of 23.2. Using a large‐scale machine, it was found possible to produce drawn products at speeds up to 2 m min −1 at a draw temperature of 155°C and R A of 19.3. The dynamic mechanical behavior of several drawn materials was studied over the temperature range −30 to +80°C. It was of particular interest that the β relaxation was found to be absent in samples of high draw ratio.

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