Pultruded fiber reinforced PU/PMMA IPNs composites -- processability and mechanical properties
- National Tsing Hua Univ., Hsin-chu (Taiwan, Province of China). Institute of Chemical Engineering
This paper presents a proprietary process developed to manufacture polyurethane (PU)/poly methyl methacrylate (PMMA) interpenetrating polymer network (IPNs) pultruded composites. The IPNs prepolymer synthesized in this study was prepared from the blends of MMA prepolymer and blocked NCO-terminated PU prepolymer. The processability, mechanical and dynamic mechanical properties of glass fiber reinforced PU/PMMA IPNs composites have been studied. From the investigation of the pot life of resins, the reactivity of resin and fiber wet-out, it was found that the PU/PMMA IPNs show excellent processability for pultrusion. Results show that the tan{delta} of IPNs composites shifts to the higher temperature with increasing PMMA content, and dynamic shear storage modulus(G{prime}) increases with PMMA content. The flexural strength, flexural modulus and hardness of IPNs composites increase with PMMA content, however, the impact strength and swelling ratio of IPNs composites decrease with the increasing of PMMA content.
- OSTI ID:
- 143570
- Report Number(s):
- CONF-930246--; ISBN 0-87339-251-5
- Country of Publication:
- United States
- Language:
- English
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