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Effects of rubber content and temperature on ductile tearing stability in ABS materials

✍ Scribed by Han, Yanchun ;Lach, Ralf ;Grellmann, Wolfgang

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
120 KB
Volume
270
Category
Article
ISSN
0003-3146

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✦ Synopsis

The material can fail by tearing instability when the elastic contraction is greater than the plastic extension due to crack growth. Tearing instability (TIS) theory developed by Paris and co-workers is applied to describe the effects of rubber content and temperature on the stability of ductile crack growth in ABS materials under impact test conditions. The increase in slope of the J-Da (d-Da) curve, dJ/d(Da) (dd/ d(Da)), tearing modulus, T (T J or T d ) and JT J with increasing rubber concentration indicates that higher rubber content is beneficial in maintaining crack growth stability. dJ/d(Da), T J and JT J increase with increasing temperature until a certain temperature. After that they decrease with further increasing temperature. This is due to the embrittlement of SAN matrix close to its glass transition temperature. ZUSAMMENFASSUNG:

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