Properties of Plastics The term ‘Plastic’ is used to refer to a wide range of semi-synthetic or synthetic organic polymers that are known to be malleable and, therefore, mouldable into differently shaped solids. They are made up of carbon, hydrogen and sometimes oxygen, chlorine, nitrogen, fluorine, sulfur, phosphorus or silicon. Plastics are also known as polymers. It is less susceptible and resistant to the kind of chemical reactions that affect metals like oxidation or rusting. a To obtain specific gravity, divide … Lower cost 8. -->, Plastics Engineering and Design An example would be to pull on a 1" wide piece of paper that is 4" long. Gehr Plastics produces some of the finest plastic semi-finished shapes in the industry, and also some of the largest. They are poor conductors of heat and electricity. Plastics come from polymers, hence all plastics are polymers, but not all polymers are plastic. Plastics may be amorphous solids, crystalline solids, or semicrystalline solids (crystallites) or any other form of solids. 3.Good transparency and wear resistance Typical Engineering Properties of Plastics Materials . Majority of the times, polymers are made up of Carbon, Hydrogen, and Oxygen only. That’s why plastics are used in so many helpful everyday products, from spatulas to car bumpers and from medical implants to fabrics for clothing. The possible results and typical values observed during such test, depending on material behavior, are summarized in the following graph: Typical reactions for chain assembling are polyaddition (continuous or step wise) and condensation polymer-ization (polycondensation) [1] (Figure 1.1).. The uses of polypropylene (PP) are seemingly endless. Poly We offer LDPE products in 1-10 MIL thickness and in an extensive range of colors. else document.write(''); Plastic, polymeric material that has the capability of being molded or shaped, usually by the application of heat and pressure. Engineering Videos High extrusion speed on standard lines 7. Let’s discuss PC properties in detail: With its properties, acetal plastics are present in various industrial applications, and it comes in different colors and grades. TYPICAL PROPERTIES of PVC and CPVC ASTM or UL test Property PVC CPVC PHYSICAL D792 Density (lb/in³) (g/cm³) 0.051 1.41 0.055 1.52 D570 Water Absorption, 24 hrs (%) 0 0.04 MECHANICAL D638 Tensile Strength (psi) 7,500 8,200 D638 Tensile Modulus (psi) 411,000 430,000 D638 Tensile Elongation at Break (%) - 27 DFM DFA Training Engineering Book Store 3. There are some properties of plastic as follows: 1. It tears with no visible elongation or nearly 0 per- When thermoplastics are heated, there is no chemical bonding and the material’s physical properties remain unaffected. Synthetic polymers, which includes the large group known as plastics, came into prominence in the early twentieth century. document.write('') This strong and transparent plastic is a popular choice for light fixtures, beverage dispensers, and dishes. Excel App. We wear plastic in our clothes—polyester (PES) and polyamides (PA) (nylons). document.write(''); Introduction to Plastics PROPERTIES OF PLASTICS 19. Comprising a unique set of chemical and physical properties makes it suitable over glass, PMMA and PE. Engineering News Figure 5.3. 2021 Osborne Industries INC. ALL Rights Reserved, Combination of Composite Materials in Design, Video: Amazing Impact Resistance of pDCPD Plastic, Video: Physical Properties of RIM Thermosetting Plastics, Lightweight with a high strength-to-weight ratio, Can be manufactured inexpensively and mass produced. // -->, GD&T Training Geometric Dimensioning Tolerancing. They have been established to simplify standardization in the specification of plastic pipe on an international basis. Plastic is a synthetic material created from a broad range of organic polymers that have become an indispensable part of our everyday world. The list of polymers goes and on and on, e.g., polystyrene (PS), high impact polystyrene (HIPS), polyethylene terephthalate (PET), polyurethane (PU), polycarbonate (PC) and polyethylene (PE). 2.Good impact resistance. Elongation Elongation is always associated with tensile strength because it is the increase in the original length at fracture and expressed as a percentage. Hydrolysis resistance 3. So, these will give good appearance to the structure and makes it attractive. Osborne Industries specialize in the production of RTM and RIM thermoset parts, with over 35 years of practical day-to-day production experience.