Funct. Mater. 2021; 28 1: 106-113.
Clamshell nanoparticles (Anadara granosa) as fillers in unsaturated polyester resin composites: Effect of fillers and molding pressure
Department of Chemical Engineering, Universitas Sumatera Utara, Jalan Almamater, 20155 Medan, Indonesia
The purpose of this study was to determine the effects of clamshell nanoparticles (Anadara granosa) predominantly consisting of calcium carbonate and the molding pressure on unsaturated polyester resin composites. The method of applying clamshell nanoparticles uses a top-down method, nanoparticles are made directly by minimizing large-sized material through the stages of suspension, ultrasonication, and separation of nanoparticles using a membrane. Composites are made using the press method on two parallel plates. The results showed that clamshell nanoparticles had an average diameter smaller than 50 nm, crystallinity index of 99.06 %. The greatest tensile strength properties at 97:3 composition, 8.6 bar molding pressure at 30.947 MPa, the elongation at break at 100:0 composition, 6.89 bar molding pressure at 11.169 %, with the impact strength at 97:3 composition, 8.6 bar molding pressure at 12050 J/m2.
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