Preparation and studying of some properties of polymer blend reinforced by natural powder Wafaa Mahdi Salih Department of Materials Engineering, University of Technology, Iraq article info Article history: Available online 8 February 2021 Keywords: Polymer blend Natural powder Conches Mechanical Physical Properties abstract utilizing of Epoxy (EP) and Unsaturated Polyester (UP) mixed combined to create ternary polymer blend, these polymeric blends as a matrix, with a various mass fraction of (5%, 10%, 15%, 20%, and 25%) contin- gent upon most elevated Impact test (IS) of the best result of polymer blend relying on to choose the ideal blending proportions of the mixes. To reinforce the selected common natural powders (conches) in var- ious mass fractions (2%, 4%, 6%, 8%, and 10%) some mechanical tests are done on these examples, and these are tensile, impact, and hardness. The results show that examples of mixes composite with (conches) powders better mechanical properties of. It’s showed (EP/UP) reinforced by conches have bet- ter results than pure polymer blend that recorded (10.4 MPa, 0.91 KJ/m 2 ) at (10 %Wt.) conches are than compared with (2.3 MPa, 0.5 kJ/m 2 ) at (0% Wt.) in tensile, impact tests respectively. The powders expand the capacity of polymers to absorb the vitality and the quality would is expanded. It is seen that the conches powders with were expanding mass fraction show a higher increment of IS finally the density increased and porosity decreased when increasing mass fractions of conches powders in the polymer blend. Water absorption decreasing with an increasing the ratio of mass fractions of conches powder in the polymer blend. The application of this research is the production of new polymer blend composites by using (epoxy/polyester) as matrix reinforced by natural particles which are suitable material for struc- tural applications such as windows panels, sliding door, and partition walls, as well as some parts in an automobile like a dashboard, bumper. Ó 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 3rd International Con- ference on Materials Engineering & Science. 1. Introduction In the last few years, there has been a stringent consumer aware- ness of new products from renewable sources. Green marketing, new directives on recycling, social influence, and change of cogni- tive values has led the consumer towards environmentally friendly products. In particular, composite materials are being developed and redesigned aiming to improve and to adapt traditional products and introduce new products sustainably and responsibly [1]. Epoxy resins are widely utilized due to their relatively high properties, like high modulus of elasticity, creep resistance, and sensible high tem- peratures performance [2]. Researchers have started to concentrate consideration on normal filaments composites (i.e., coir fiber) which are made out of natural or synthetic, reinforced with charac- teristic fibers. Natural fibers display numerous advantages proper- ties, they are yielding moderately with high properties light weight composites and low-density material. The composite material showed up in the sixty of the only remaining century. They com- prise two materials consolidated together. The principal material is a fiber of high quality (like carbon fiber and glass fiber). The mate- rial is made of plastics or polymers that give the item its final form [3]. Right now, U.S. Bongarde and V.D. Shinde (2014) observed that fiber-strengthened polymer composite. These composites were having the cost and low thickness, just as agreeable mechanical properties, make them appealing because of simple sustainability and accessibility of crude materials [4]. Shayesteh Haghdan and Gregory D Smith, (2015) showed that Many composite items were made of polymers reinforced with synthetic particles. Despite the high mechanical properties related to these particles, they were substantial and costly contrasted and characteristic natural parti- cles. The utilization of common plant particles like wood. The research surveys studied the effect of chemical treatment on fiber-adhesion and the wettability of natural reinforcement – matrix [5]. Soma Dalbehera and S. K. Acharya, (2014) considered that there had been a more prominent tendency towards natural https://doi.org/10.1016/j.matpr.2020.12.305 2214-7853/Ó 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 3rd International Conference on Materials Engineering & Science. E-mail address: 10610@uotechnology.edu.iq Materials Today: Proceedings 42 (2021) 2202–2208 Contents lists available at ScienceDirect Materials Today: Proceedings journal homepage: www.elsevier.com/locate/matpr