High Density Polyethylene General Properties English Units SI Units CAS Number Ethylene homopolymer 1-butene-ethylene copolymer 1-hexene-ethylene copolymer 9002-88-4 25087-34-7 25213-02-9 Molecular Weight 0.062 lbs 28.0 g Density 0.0336-0.0349 lbs/in3 0.930-0.965 g/cm3 Melt Density 0.027 lbs/in3 0.764 g/cm3 Bulk Density Pellets 35 - 38 lbs . Because HDPE has a lower density, it can be more rigid. Properties with values for just one material (11, in this case) are not shown. Polypropylene material is resistant to a wide range of chemicals. This is due to the natural properties that come with each type of plastic. As it doesn't absorb microwave energy and has a relatively high softening point, polypropylene is considered to be a suitable resin for the production of microwave food reheat containers such as bowls, dishes, and related food . High Density Polyethylene - HDPE. This allows these grades to be crosslinked by moisture, . . Listed below you will find the reasons why polypropylene is commonly used in our daily life: - Light in weight For example, PP has the lowest density (i.e 0.90-0.92 g/cm3) of the resins used in packaging. Therefore, PP is the commodity plastic with the lowest density. High-density polyethylene (HDPE) is stronger than low-density polyethylene (LDPE). UHMW (ultra high molecular weight polyethylene) is an extremely tough, abrasion . The density of (PP) is between 0.895 and 0.92 g/cm 3. As one of the most versatile plastic materials around, HDPE plastic is used in a wide variety of applications, including plastic bottles, milk jugs, shampoo bottles, bleach bottles, cutting boards, and piping. High Density Polyethylene (HDPE) Sheet. HDPE is a thermoplastic and is most often dealt with in the form of a sheet. Density is the first factor. The most frequently used plastic polymers are polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC), while some engineering plastics, e.g., ultra-high molecular weight polyethylene (UHMWPE) are being extensively applied (You and Li, 2013). The density of polyethylene can vary from a low of 0.857 g/cm3 and to a maximum of 0.0975 gm/cm3. At low temperatures of -70°C or lower, PP fibers remain their excellent flexibility. Dried Distillers Grain with Solubles (DDGS) was evaluated as a bio-based fiber reinforcement. HOME ; BACK ; ABOUT CROW ; CONTACT US; DISCLAIMER; High-Density Polyethylene (HDPE) Thermo-Physical Properties . Because of its low density (0.902 g/cm 3), PP packages are clear, whereas HDPE (0.94-0.965 g/cm 3) has a distinct colour and is opaque. Thanks to its lower density, though, PP, can be used when moulding parts with lower weight. High density polyethylene is used to make Nalgene bottles, carboys, and other items where impact strength and long-term chemical compatibility are key requirements. Polypropylene (PP) pipe compound: block copolymer: Density: 900kg/m 3: ISO 1183: Flexural Modulus (2mm/min . Pliable: The addition of rubber to PP makes . Density of Polypropylene. A thermoplastic is a polymer that becomes plastic/flexible upon heating, and of course, hardens upon cooling. CTE, linear 20 C: 77.8 in/in-F: Melting Point: 255 - 268 F: 130C: Vicat Softening Point: 226 - 264 F: 120C: Brittleness Temperature CTE, linear 20 C: 77.8 in/in-F: Melting Point: 255 - 268 F: 130C: Vicat Softening Point: 226 - 264 F: 120C: Brittleness Temperature 220 - 280 degrees Celsius (428 - 536 degrees Fahrenheit); no higher than 280 degrees Celsius. Degree of Branching. Typical densities of various substances are at atmospheric pressure. Polypropylene has a density range of 0.898 g/cm 3 to 0.908 g/cm 3. This thermoplastic is made from a string of ethylene molecules (hence, the poly part of polyethylene), and is known for being both lightweight and strong. (1) The test specimen is 2″ in width and 2″ in height. The chemical resistance of this polymer towards certain acids and alkalis is quite high. The blends recycled high density polyethylene (rHDPE) and recycled polypropylene (rPP) with and without maleic anhydride polypropylene (MAPP) have been investigated. Like HDPE, Polypropylene offers good chemical resistance. Density of Polyethylene. The first polypropylene resin was produced by Giulio Natta in Spain, although commercial production began in 1957. . PP is polypropylene. The first polypropylene resin was produced by Giulio Natta in Spain, although commercial production began in 1957. With its chemical resistant properties, HDPE is great for laundry, shampoo, conditioner, household cleaning products, motor oil, antifreeze and recycling bins. The excellent mechanical properties of high cell density polypropylene foam such as tensile strength and high modulus are the reason for its applications in various fields like heat and sound insulations, automotive and electronic packaging. Polyethylene is further broken down into weights or densities which is done so the plastic can serve a more specific . PP has a high degree of polymer chain branching compared to HDPE. HOME ; BACK ; ABOUT CROW ; CONTACT US; DISCLAIMER; High-Density Polyethylene (HDPE) Thermo-Physical Properties . Free Online Library: Ram extrusion of high-density polyethylene and polypropylene in solid state: process conditions and properties. PP weighs lighter than a PE. Polypropylene (PP), grade 1110 MAS and high-density polyethylene (HDPE), grade 180M50 was procured from Indian oil corporation, India. VALUE / RANGE : Melting Point °C: 126 - 135: Density : g mL-1: 0.955 - 0.961: Coefficient of Thermal Expansion x 10-5: cm / (cm °C) 12.5 - 18.0: Heat Deflection Temperature . If you held two parts of the same design made from materials representing these two extremes you could readily tell the difference. The density of HDPE can range from 0.93 to 0.97 g/cm³. Polypropylene has a high static charge than polyethylene. High Density Polyethylene, Polypropylene and Polystyrene Eman Mousa Alhajji North Carolina State University Department of Materials Science and Engineering MSE 255 Lab Report 203 A Patrick Snyder 3/13/2016 Abstract The objectives of this experiment are to analyze the vibrational properties and Fourier Transform Infrared Spectroscopy (FTIR . Specific Gravity: 0.96: Water Absorbtion (Method A, 24hr)% . This feature makes it a suitable option for lightweight . High Density Polyethylene (HDPE) Polypropylene (PP) Copolymer. High Density Poly Ethylene (HDPE) is a thermoplastic polymer made from petroleum. It is more stress crack resistant than polyethylene low density balls. It is a greatly versatile closed-cell bead foam with low density. Here is a list of physical and chemical properties of polypropylene. Notice the high electrical resistivity and low coefficient of thermal expansion, which give PP the outstanding resistance and durability against heat and electricity. . Homopolymer: 160 - 165°C; Copolymer: 135 - 159°C; Density of Polypropylene - PP is one of the lightest polymers among all commodity plastics. Mechanical Properties: The density of polypropylene (PP) is between 0.895 and 0.92 g.cm. PP fiber has relatively high crystallinity . Of all commodity plastics, PP is one of the lightest polymers. Discover HDPE applications online at A&C Plastics. Density is a key factor that differentiates HDPE from PP. Density of melt at 180°C: 0.769 g/cc: Heat of combustion: 19400 Btu/lb: Oxygen index: . Density ρ: g mL-1: 0.85 - 0.88: 0.86: PP Melting Point: C° . Polypropylene fibers have a softening point in the region of 150°C and a melting point at 160-170°C. Polypropylene | C22H42O3 | CID 543856 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities . High Density Polyethylene Corrugated Plastic Typical Physical Properties (a) Thermal Expansion Coefficient (ASTM D 696): 13 x 10-5 oC-1 (b) Water Absorption at 24 hours immersion (ASTM D 648): 0.02% (c) Melting Temperature (DSC method): ~ 130oC (d) Water Vapor Transmission Rate (WVTR) at 23oC (ASTM C 209): WVTR, g/(cm2 x hr) = 8.3 x (p1 - p2) / l Where p1 and p2 are the partial pressures . Polypropylene (PP) is a thermoplastic "addition polymer" made from the combination of propylene monomers. Because of the ability of the material to form either linear or branched structures, the density of polyethylene can vary from a low of 0.857 g/cm3 to a maximum of 0.975 g/cm3. Polypropylene Properties; Polypropylene (PP) . wall (in) aver. Isotactic & atactic polypropylene is soluble in p-xylene at 140 °C. . HDPE is lower cost than many labware materials making it a good choice where economic savings and product value are appreciated. HDPE delivers both stiffness and toughness by increasing both density and molecular weight. This results in a plastic that is softer and more flexible, but . Because HDPE has a lower density, it can be more rigid. Here are some key properties and benefits of polypropylene: Melting Point of Polypropylene - The melting point of polypropylene occurs at a range. If polyethylene is heated to within 5°C of its melting point, it can be shaped easily and will retain its imposed form on cooling. Density is defined as the mass per unit volume.It is an intensive property, which is mathematically defined as mass divided by volume: ρ = m/V In words, the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance. Thermophysical Properties of High Density Polyethylene. UV resistance, though, is poor; if it is stabilised with additives, it can be . . High density polyethylene can be shaped and formed as sheets, rods, rolls etc. The fact that over 95 percent of these car batteries get recycled, makes it an environment-friendly option. The density of polyethylene can vary from a low of 0.857 g/cm3 and to a maximum of 0.0975 gm/cm3. The recycling symbol for this plastic is seen opposite. High density polyethylene for instance should be heated to a range of 130°C — 135°C for forming. Density of melt at 180°C: 0.769 g/cc: Heat of combustion: 19400 Btu/lb: Oxygen index: . Physical and Chemical Properties of Polypropylene. Polypropylene is a bad insulator while polyethylene is a good electrical insulator. Considerable properties investigations of the WPC have achieved a consensus, i.e., the WPC . With more and more companies embracing sustainability initiatives, HDPE sheet popularity has . PP has a low density (0.905 gcm 3 ). It is easy to fabricate and weld using thermoplastic welding equipment and is an excellent choice for . It has the following properties: Stiffness, strength, toughness, resistance to chemicals and moisture, permeability to gas, ease of processing, and ease of forming. Properties of polypropylene. 2) High-Density Polyethylene (HDPE) Collectively, Polyethylene is the most common plastics in the world, but it's classified into three types: High-Density, Low-Density and Linear Low-Density. When compared to other plastics, the melting point of high density polyethylene . Polypropylene fibers have a softening point in the region of 150°C and a melting point at 160-170°C. High Density Polyethylene (HDPE for short) is a thermoplastic polymer derived from petroleum with a generalized chemical formula (C2H4)n. The HDPE formula represents the repeating monomer unit of ethylene and forms a poly-ethylene molecular chain. High-density polyethylene (HDPE), recyclable plastic no. Base resin density refers to the density of the natural PE that has not been com-pounded with additives and/or colorants. The density of polypropylene is between 0.895 and 0.92 g/cm². Like HDPE, Polypropylene offers good chemical resistance. It exhibits distinctive properties, such . It is a thermoplastic with a very high strength to density ratio. Polypropylene is a workhorse in the plastics industry, Polypropylene is similar to high-density polyethylene, but polypropylene has several superior qualities. Conditions of the Polypropylene PP Injection Molding Process. Polypropylene, a complex plastic, is generally considered safe for humans. Several things differentiate polypropylene from HDPE. Mechanical Properties: The density of polypropylene (PP) is between 0.895 and 0.92 g.cm. As you can see, PP has the lowest density. The density of polypropylene is known to range . . Thanks to its lower density, though, PP, can be used when moulding parts with lower weight. Typical densities of various substances are at atmospheric pressure. Our resin has a flexural modulus of 175,000 psi. Translucent white. THERMAL PROPERTIES. Polypropylene has a lower density than most of the polyethylenes (0.9 g/cc) and a . Density is a key factor that differentiates HDPE from PP. General Properties of Polypropylene - . High-Density Polyethylene is strong and resistant to moisture and chemicals, which makes it ideal for cartons, containers, pipes and other building . (a) Edge crush resistance (ECR) and flat crush resistance (FCR): PP sheet of straight flute and I-beam rib. HDPE (high density polyethylene) is available in sheet and rod for applications that require greater strength and stiffness than LDPE (low density polyethylene). HDPE (High Density Polyethylene) HDPE (High-density polyethylene) is a thermoplastic derived from petroleum. High Density Polyethylene is known for it's big strength-to-density ratio. Usually, polypropylene (PP) foam is prepared at low cell densities and with a broad range of cell size . High-Density Polyethylene, usually shortened to HDPE or PEHD, is a plastic polymer with flexible properties that make it ideal for a wide range of applications. (2) The test specimen is 8″ in width and 10″ in height. The effect of an impact polypropylene copolymer (IPC) having excellent stiffness-toughness balance on the microstructure and properties of a blend comprising 80 wt% recycled high density polyethylene (rHDPE) and 20 wt% recycled isotactic polypropylene (rPP) was studied. Typical Engineering Properties of Polypropylene General Properties English Units SI Units CAS Number 9003-07- 9003-07- Density Homopolymer 3 Random Copolymer Impact Copolymer 3 . The effect of different blend ratios on tensile properties . HDPE can be more rigid as a result. In the presented study, polypropylene (PP) and high density polyethylene (PE) were blended at the ratios of 80/20 and 20/80 to simulate recycled waste thermoplastic mixtures. 2, is commonly used as milk jugs, liquid laundry detergent bottles, outdoor furniture, margarine . Durable, versatile, low cost, abrasion and chemically resistant plastic material. 20 - 80 degrees Celsius (68 - 176 degrees Fahrenheit); suggested: 50 degrees Celsius (122 degrees Fahrenheit). The material cannot be cemented, but it is easily welded with a plastic welder. High-density polyethylene, as the name suggests, has a higher specific density than low-density polyethylene, though this difference is only marginal. reducing the intermolecular forces of attraction. PP has a higher melting point and a lesser cost than PE. Why is High Density Polyethylene suitable for the manufacture of . Typical Mechanical Properties. Density is defined as the mass per unit volume.It is an intensive property, which is mathematically defined as mass divided by volume: ρ = m/V In words, the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance. The melt viscosity properties of HDPE, HP030, PP and PC were characterized as a function of temperature . It is a versatile product that is extremely strong, impact resistant, and exhibits a low coefficient of friction. It is an excellent choice for fabricated water tanks and chemical tanks. Density. PE pipe resins with a base resin density in the range of 0.935 to 0.941 grams per cubic centimeter (g/cc) are A wide variety of Nalgene bottles are made from HDPE. by standard heat forming techniques. At low temperatures of -70°C or lower, PP fibers remain their excellent flexibility. A set of up to 130 kits for distribution to students contains samples of high-density polyethylene (HDPE) and low density polyethylene (LDPE) so that students can compare properties such as tensile strength. For each property being compared, the top bar is HDPE and the bottom bar is PP copolymer. HDPE offers great strength, affordability, and environmental friendliness, all of which make it the preferred plastic .