Gas foaming of polyphenyl sulfone: Effect of the blowing agents and operating parameters
نویسندگان
چکیده
Abstract Polyphenyl sulfone (PPSU) is a highly stable and rigid polymer with good chemical mechanical resistance used in automotive aerospace industries high‐temperature applications during long‐operating cycles. PPSU foams are applied as core materials lightweight composites ensuring high strength, fire resistance, thermal acoustic insulation. In this paper, slabs foamed using CO 2 , N He blowing agents (BAs). An experimental campaign carried out to estimate the BAs' diffusivity polymer. details, ranges from 8E‐11 1E‐09 m /s at temperatures 220 260°C; of 2E‐10 5E‐09 (220–260°C) it 4E‐09 for 220°C. Foaming tests reveal an expansion ratio 400% 130% He, 150% .Scanning electron microscopy analysis also performed on produced samples, obtaining cell number density 1.3E07, 2.6E05, 1.8E06 cells/cm 3 when saturating, respectively, 220°C 100 bar, 230°C bar.
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ژورنال
عنوان ژورنال: Journal of Applied Polymer Science
سال: 2023
ISSN: ['1097-4628', '0021-8995']
DOI: https://doi.org/10.1002/app.54574