Agrowastes and woodflour are a potential and attractive alternative of cheap reinforcement for brittle polymeric materials because they can reduce costs and, at the same time, improve certain properties. On the other hand, their high moisture sorption and low microbial resistance are disadvantages t
Composites from sawdust and unsaturated polyester
✍ Scribed by Norma E. Marcovich; María M. Reboredo; Mirta I. Aranguren
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 514 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
✦ Synopsis
Wood is an inexpensive filler that reduces the overall cost of polymer composites, with loss in some properties (e.g., ultimate strength, elongation, and water sorption often suffer with the addition of fillers) and a gain in others (e.g., Young modulus increment, reduced weight with respect to inorganic fillers, reduced wear of the processing equipment). Sawdust of Eucaliptus saligna or calcium carbonate have been used as reinforcing fillers of a n unsaturated polyester matrix. The ultimate strength, elongation, and modulus are presented as a function of the filler concentration and surface treatment. The dynamic mechanical properties were used to determine the influence of the moisture content on the performance of the final material.
📜 SIMILAR VOLUMES
Unsaturated polyester prepolymer was synthesized from maleopimaric acid (MPA), diethylene glycol (DEG) and maleic anhydride (MA) in the molar proportions 1 : 4:3 respectively. MPA was prepared from natural rosin and MA. Kinetic studies of the reaction were performed, and the reactivities of MPA, MA