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Optimising phase transformational toughening of polypropylene pipe coatings

conference contribution
posted on 2010-01-01, 00:00 authored by Russell VarleyRussell Varley, Q Yuan, Sarah KhorSarah Khor, M Dell'olio, S Shen, K H Leong, S A Bateman, C Patrick
In this work, the phase transformational toughening of polypropylene (PP) was studied for two commercially-available β-phase nucleating agents, i.e. a quinacridone-type nucleating agent, and calcium carbonate-pimelic acid. Their efficacy for toughening was evaluated for two different PPs, one toughened with an elastomer and the other as is, or unmodified. Tensile and impact properties were determined, and correlated with β-phase content in the PP. It was demonstrated that PP, both with and without impact modifier, can be toughened using the phase transformation method. However, the effect of the β-phase nucleating agents was significantly enhanced when the elastomer was present in the PP. Further, the variation in elastic modulus across the sample thickness, likely due to the uneven cooling rates between the surface and the core, was measured and a clear correlation between nano-hardness and β- phase content was observed.

History

Event

7th Asian-Australasian Conference on Composite Materials (ACCM-7)

Volume

1

Pagination

281 - 284

Publisher

[Curran]

Location

Taipei, Taiwan

Place of publication

[ Red Hook, N.Y.]

Start date

2010-11-15

End date

2010-11-18

ISBN-13

9781632660756

Publication classification

EN.1 Other conference paper

Title of proceedings

7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010

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