Preparation of Polyester/ Micro Eggshell Fillers Composite as Natural Surface Coating

Abstract

To fabricate an inexpensive surface coating with excellent mechanical properties with good water resistance and thermal diffusion, white eggshell fibers with particle size (~1micrometer) has been added by different weight percentages (1,2,3,4,5,6,7 and 8 %) to Unsaturated Polyester. The weight ratio (4%) of eggshell powder is a good ratio to be added to polyester to improve its mechanical properties, such as hardness, impact strength, and wear resistance. The hardness was improved by (3.75%); impact strength has the same value as polyester, flexural strength by (8.43%) and high improvement in wear resistance (74.4%), as well as to get further improvements in mechanical properties of polyester, the eggshell powder was added with (5%), where the hardness was improved by (3.63%), impact strength improved by (~23%) and the flexural strength by (23.23%)but the wear resistance by (2.15%) only . The resistance to thermal of polyester was improved to (9.95%) and (13.77%) by adding the eggshell powder with ratios (of 4%) and (5%), respectively. (Polyester/ 4% eggshells). And (Polyester/ 5% eggshells) composites have a higher resistance to water diffusion after being immersed in water between (1-4 weeks). The electron microscope image was used to observe the degree of homogeneity in polyester composite microstructure, which improved the results mechanical and thermal results.

The Compressive Strength of Unsaturated polyester reinforced by natural and synthetic Calcium Carbonate

“…The ultamite stress of (UPE /1% eggshell fibers) and (UPE/ 3% CaCO 3 fibers) composites have been increased by adding the (TiO 2 ) by small ratio (1%wt) , where the ultamite stress of (UPE /1% eggshell fibers) and (UPE/ 3% CaCO 3 fibers) composites are improve from ( 85.54 -94.27 N/mm 2 ) and from ( 89.82 -100.18 N/mm 2 ) respectively , these results are good agreements with [6].…”

“…Fibers can be synthetic or natural , synthetic fibers such as carbon and glass, are used For high strength structural applications whereas natural fibers can be used as good substitutes for synthetic fibers for low strength , the natural fibers lacked in healthy danger and can be used in various applications such as packaging , ships and cars engineering structure [4,5]. Eggshell fiber was best natural fibers that can be used to improving the mechanical properties of polymer matrix, this because eggshell fiber has many properties, such as high strength, lightweight , costless and non-toxicity, eggshells of great use in many industrial applications because the Calcium carbonate in eggshells has a low density with compared to the mineral calcium carbonate [6]. Compressive strength is the most important mechanical properties of construction materials, the compressive strength measurement depends on the dimensions of the specimens, the confinement of sample in this test cause the friction of the loaded surfaces of the specimen and the steel plates during the test [7].…”

As tecnologias e processos de Produção Industrial

“…Os resultados dos ensaios mostraram que a incorporação de enchimentos de casca de ovo resulta em menor resistência à tração, maior módulo -2 de tensão; com 6,63 GPa, e resistência ao impacto; com 75,384 kJ m , com a inclusão de 6% em massa de casca (NAYAK et al, 2015). Outro estudo com casca de ovo em resina epóxi foi realizado por Jassim (2017). O mesmo avaliou a resistência ao impacto e a taxa de absorção de água de epóxi reforçado com pós de casca de ovo branco e marrom, com diferentes frações volumétricas (1%, 2%, 3%, 4% e 5%).…”

Preparation and characterization of plastic wood from cellulosic residues

“…Figure 8 shows Pictures of samples from the fracture side using an optical microscope represent it was noted that the preparation conditions had the greatest effect on the formation of the features of the surface structure of the prepared samples. The distribution of the micro-material within the substrate, where the micro-material was distributed by the mixing method (distraction) [30].…”