Melt fracture, melt viscosities, and die swell of polypropylene resin in capillary flow
β Scribed by Jan-Chan Huang; Zhenghong Tao
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 135 KB
- Volume
- 87
- Category
- Article
- ISSN
- 0021-8995
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π SIMILAR VOLUMES
Melt rheological properties of blends of polypropylene (PP) and PP grafted with maleic anhydride (PP-g-MA) are studied using a capillary rheometer. A pseudoplastic flow behavior is observed. The pseudoplasticity of the melt reduces with an increase of PP-g-MA content and/or temperature. The PP-g-MA
## Abstract A selfβmade dynamic capillary rheometer (DCR) was designed to investigate the dynamic viscoelastic characteristic of polypropylene (PP) melt during the pulsatile pressure extrusion. A vibration force field was parallel superposed upon steady shear flow in this DCR by means of a vibratio