Preparation and physical properties of photopolymer/SiO2 nanocomposite for rapid prototyping system

Autor:	Dien-Chi Wu, Shih-Hsuan Chiu
Rok vydání:	2007
Předmět:	Rapid prototyping Materials science Nanocomposite Polymers and Plastics Nanoparticle General Chemistry Dispersant Surfaces Coatings and Films Photopolymer Ultimate tensile strength Materials Chemistry Composite material Curing (chemistry) Volumetric shrinkage
Zdroj:	Journal of Applied Polymer Science. 107:3529-3534
ISSN:	1097-4628 0021-8995
DOI:	10.1002/app.27535
Popis:	A photopolymer material was applied in liquid rapid prototyping (RP) machine. The prototype fabricated from photopolymer was difficult for storage due to volumetric shrinkage and deformation during curing. The prototype fabricated from photopolymer suffers from the volumetric shrinkage during curing and the continuing deformation for a creeping period after curing. Therefore, we used nano-SiO2 as a major additive to modify the physical properties of photopolymer. We also added appropriate dispersant to make nanoparticles distribute uniformly in order to reduce the phase separation in composite material. The experimental results showed that photopolymer/SiO2 nanocomposite can improve tensile strength and hardness by about 50% and offers better dimensional stability. Photopolymer/SiO2 nanocomposite can also increase the degradation temperature and shorten manufacturing time for RP processing. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Databáze:	OpenAIRE
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