The filler varied from 5% to 25% by weight in the composite. The bimodal high density tipelin types are produced by cx process under licence of. Engineering properties of polyethylene introduction a fundamental understanding of material characteristics is an inherent part of the design process for any piping system. The present work focuses on the mechanical role of grafted nano. Mechanical properties, tribological the authors 2014. Hdpe composites with different weight percentage of bismuth 0%, 10. Hdpe composites with different weight percentage of. Overview of materials for high density polyethylene hdpe, injection molded. Pdf high density polyethylene hdpecalcium silicate cs composites containing vinyltriethoxysilane treated calcium silicate contents varying from. For more specific values, follow the links immediately below. Multiwalled carbon nanotubes mwcnts have been incorporated into a high density polyethylene hdpe matrix using twin screw. It was shown that the use of pb dust had a positive effect on improving mechanical properties and on reducing linear coefficient of thermal expansion lcte values of. Regardless of process type, the chemical process is the same.
Mechanical properties of hdpe m624 with three filler inorganic and organic composites were assessed with respect to the effect of the filler content. The effect of individual and combined particleboard dust pb dust and basalt fibers bfs on mechanical and thermal expansion performance of the filled virgin and recycled high density polyethylene hdpe composites was studied. The result shows that the mechanical properties of pvc can be remarkably reinforced by being filled with hdpe, where the addition of 9. The specimens of pure hdpe, cpe, and nine types of hdpecpe blends, with different component ratios at 10 wt. Introduction polymer composite is material of research in modern days. Mechanical properties of high density polyethylene. Finally, the mechanical properties of pure pvc and the pvchdpe composites were compared. Herein we propose the tuning of the interface between cnf and high density polyethylene by the design of polymer dispersants on the basis of surface free energy and the glass transition temperature. Studies on biodegradability and mechanical properties of. Brent tisserat, a louis reifschneider, b rogers harry okuru, c and victoria l. Paper open access molecular dynamic simulation of the density. High density polyethylene hdpe representing the largest portion of the polyethylene applications, hdpe offers excellent impact resistance, light weight, low moisture absorption, and high tensile strength. The latter, were achieved through the injection molding of high density polyethylene hdpe reinforced with specific volume fraction of cnts. Thermoplastic polymers are of great interest due to their technical and commercial importance.
Morphologies, nonisothermal crystallization behavior, and mechanical properties of the composites were investigated. Mechanical properties of high density polyethylenechromium. Mechanical, morphological, and thermal properties of. Maximum enhancement in tensile strength occurs at 0. High density polyethylene physical properties metric english comments specific gravity 0. Mechanical properties of highdensity polyethylene fiber concrete afrah abdulwahhab jaber alkraidi lecturer, university of kufa, faculty of engineering, iraq. The graph bars on the material properties cards further below compare hdpe to. Pdf fiber reinforced concrete is widely used in concrete structures, it has several benefits like increasing tensile, compressive, flexural. Mechanical, morphological, and thermal properties of nutshell and microcrystalline cellulose filled highdensity polyethylene composites effects of nutshell fiber loadings of 30 wt.
Pdf mechanical properties of filled high density polyethylene. History and physical chemistry of hdpe plastics pipe. Rice husk biochar was utilized to reinforce highdensity polyethylene hdpe and to prepare biocharplastic composites bpc by the extrusion method. A considerable improvement on mechanical properties of the material can be observed when the volume fraction of cnt is increased. It was shown that the use of silanemodified gfs had a much larger effect in improving mechanical properties and in.
The thermo mechanical properties of the resulting nanocomposites have been thoroughly investigated. Hdpe is used in a variety of applications and industries where excellent impact resistance, high tensile strength, low moisture absorption and chemical and. The mechanical tests performed on the blends included tensile, flexural, and impact tests. With such an understanding, the piping designer can use the properties of the material to design for optimum performance. Mechanical properties of high density polyethylene fiber concrete afrah abdulwahhab jaber alkraidi lecturer, university of kufa, faculty of engineering, iraq. Low density polyethylene ldpe is a semirigid and translucent polymer. However, in polyolefin nanocomposite materials, the rational control of dispersion and the improvement of interfacial strength remain challenging. Mechanical and chemical properties of high density. This paper presents experimental results of the irradiation in air with a cobalt60 gamma source of high density polyethylene hdpe samples to address the radiation effect on compression and tensile parameters. Thermomechanical properties of graphitereinforced high. Results of experimental investigation of mechanical properties of highdensity polyethylene hdpechlorinated polyethylene cpe blends in tension are reported. Hdpeckd composites with various ckd content 0,2,4,6, and 8wt% samples were prepared by melt extrusion followed by injection molding. School of civil environmental and chemical engineering college of science engineering and health rmit university march 2015.
Mechanical properties of filled high density polyethylene. Rasha abd alredha ghani lecturer, university of kufa, faculty of engineering, iraq. The influences of filler size and content on the properties thermal conductivity, impact strength and tensile strength of al 2o 3high density polyethylene hdpe composites are studied. Mechanical and thermal properties of high density polyethylene dried distillers grains with solubles composites. When compared to other plastics, the melting point of high density polyethylene. Field emission scanning electron microscopy revealed. It is a product of indorama group, a subsidiary of eleme petrochemical company ltd nigeria. The ldpe is composed of 4,00040,000 carbon atoms, with many short branches. Physical chemistry and mechanical properties of hdpe. Strategy for the improvement of the mechanical properties. The effect of individual and combined particleboard dust pb dust and basalt fibers bfs on mechanical and thermal expansion performance of the filled virgin and recycled high density. Keywords low density polyethylene polymer high strain rate taylor test split hopkinson pressure bar introduction polyethylene. The experimental results show that at a content of 0. Rice husk biochar was utilized to reinforce high density polyethylene hdpe and to prepare biocharplastic composites bpc by the extrusion method.
In this study, mechanical properties of multiwalled carbon nanotubes high density polyethylene mwcnthdpe nanocomposite materials produced by method of injection molding have been investigated experimentally. Paper open access molecular dynamic simulation of the. Investigation of mechanical properties of carbon nanotubes. Compared to hdpe, it has a higher degree of short and long sidechain branching. High density polyethylene composites reinforced with hybrid. I56ce111922007 a thesis submitted in partial fulfillment of the requirements for the award of the degree of master of science in the school of pure and applied sciences of kenyatta university december, 2012. The features of the stressstrain curves obtained are discussed. High density polyethylene, often abbreviated to hdpe, is a polymer whose monomer is ethylene. Mechanical, thermal and crystallization properties of. History and physical chemistry of hdpe atoms, and consequently, the greater the molecular weight.
High density polyethylene composites reinforced with. Mechanical properties of low density polyethylene, journal of dynamic behavior of materials, 2016, pp. Mechanical properties of fly ash filled high density. High density polyethylene was chosen as it is a commodity polymer, easily available at economical price and easy to process. The effects of particle size and content on the thermal. Effects of microstructure on creep characteristics by joy j.
Cellulose nanofibers cnfs hold great potential as sustainable reinforcement fillers with excellent mechanical, thermal, and chemical properties. Mechanical properties of high density polyethylenecarbon nanotube composites. This research studies the effect of ultraviolet ray and the addition of chromium trioxide cro 3 on the mechanical properties in the ratio 0. Typical engineering properties of high density polyethylene. Influence of thermal ratcheting on the creep and mechanical.
The properties given below are for hdpe grades used to manufacture pipe. High density polyethylene physical properties metric. Strategy for the improvement of the mechanical properties of. This paper presents experimental results of the irradiation in air with a cobalt60 gamma source of highdensity polyethylene hdpe samples to address. Ecofriendly, low density and high mechanical properties of the composite have made them good reinforcing materials for the synthesis of composite materials. Degree of entanglement, reinforcement efficiency and c factor are also calculated and correlated with the mechanical properties. Studies on biodegradability and mechanical properties of high. Hdpe is a very versatile plastic that has a wide range of applications from pipes to storage bottles. Pdf mechanical properties of high density polyethylenemodified.
Influence of thermal ratcheting on the creep and mechanical properties of high density polyethylene. Mechanical and chemical properties of high density polyethylene. Astm d5702 mechanical properties hardness, shore d 70 70 astm d2240. Linear low density polyethylene lldpe shorter branches than ldpe 0. The molecular weight, the molecular weight distribution and the. Dried distillers grain with solubles ddgs was evaluated as a biobased fiber reinforcement. Pdf mechanical properties of high density polyethylene. Abstract high density polyethylene was melt compounded with various untreated hydrophilic or surface treated hydrophobic fumed silica nanoparticles, having different surface areas.
Mechanical and thermal properties of rhigh density. Low pressure high density polyethylene in 1953, it was discovered that ethylene could be polymerised at low pressures to form a linear polymer with high density polyethylene hdpe and it resulted from the work of ziegler on the low pressure polymerisation of ethylene using organometallic catalysts. Abbas hassan kadhim lecturer, university of kufa, faculty administration and economics college, iraq. Results of experimental investigation of mechanical properties of high density polyethylene hdpechlorinated polyethylene cpe blends in tension are reported. Several published models were adapted to fit the measured tensile modulus and strength of various composite systems. Other common polyethylene pe materials are mediumdensity polyethylene mdpe.
To improve the interfacial bonding between the cnfs and hdpe matrix, two types of. Hdpe is also nontoxic and nonstaining and meets fda and usda certification for food processing. Effects of microstructure on creep characteristics. Thermomechanical properties of high density polyethylene. Keywords high density poly ethylene hdpe, polypropylene pp, polyblends, mechanical, thermal, crystallization properties 1. The molecular weight, the molecular weight distribution and the amount of branching determine many of the mechanical and chemical properties of the end product. Mechanical properties of high density polyethylenecarbon. High density polyethylene physical properties metric english. Sio 2 particles in high density polyethylene composites prepared by melt compounding. Resins that are produced without comonomer are called homopolymers. Effect of bismuth filler on mechanical and electrical properties of high density polyethylene hdpe is described in this study. Mechanical properties of low density polyethylene pdf. Printer friendly version pdf download download as pdf excel.
High density polyethylene structure, properties, and uses. Obvious improvement in the mechanical parameters was recorded depending on the filler type and mesh size. Several published models were adapted to fit the measured tensile modulus and. Improving the design stresses of high density polyethylene pipes and vessels used in reverse osmosis desalination plants. Brent tisserat, a louis reifschneider, b rogers harry okuru, c and. Hdpe, ultraviolet ray, cro3, mechanical properties. These parameters were evaluated for three levels of dose rates and five levels of absorbed dose.
The density range of copolymers produced with hexene1 comonomer grades is 0. Mechanical properties of rice husk biochar reinforced high. The properties of hdpe include three common variations. Chapter 3 material properties 47 chemical structure, which are reflected in certain differences in properties, such as density, ductility, hardness, etc. Overview of materials for high density polyethylene hdpe matweb. Influence of thermal ratcheting on the creep and mechanical properties of highdensity polyethylene. Low pressure high density polyethylene in 1953, it was discovered that ethylene could be polymerised at low pressures to form a linear polymer with high density polyethylene hdpe. Mechanical properties of high density polyethylenecement. This research studies the effect of ultraviolet ray and.