Uni Scrap Trading

Polyethylene is the world's most widely used thermoplastic and is made by the polymerization of ethylene. Polyethylene is often classified by its density, because greater density corresponds with greater material rigidity. The world�¢??s largest volume polyethylene is high density polyethylene (HDPE), which has a relatively high degree of tensile strength. Plastic containers represent the most common household use of high-density polyethylene. At the opposite end of the spectrum is low density polyethylene (LDPE), which was the first type of polyethylene to be developed. Flexible packaging represents the most common household use of low-density polyethylene. Both high- density polyethylene and low-density polyethylene are also commonly used for moulding applications. Linear low-density polyethylene (LLDPE) can usually be manufactured at a slightly lower cost than low density polyethylene and has similar basic properties. While low-density polyethylene and linear low-density polyethylene are to a certain extent substitutable for each other, one may be more suitable than the other for a specific application.

Low density polyethylene (LDPE), also known as high pressure polyethylene, is a kind of plastic material, it is suitable for thermoplastic molding processing of various forming processes, forming processing is good. LDPE is mainly used for thin film products, but also for injection products, medical devices, medicine and food packaging materials, blow molding hollow molding products and so on. Item Value Product Name LDPE Granules Other Names Low Density Polyethylene Place of Origin China Grade Standard Industrial Grade,Injection molding grade Density 0.91-0.93 g/cm³ Appearance White Granules,customized color Application Plastic,film , bag Sample provide Package 25 kg/bag,1000 kg/bag,customized packag

Black LDPE granules is produced from European origin post industrial 60/40 and 80/20 grade raw materials. Standard process includes crushing, washing in three separate pools, agglomerating and extruding in two stages. MFI Range (190 -C 2,16 kg ) 0,80-1,00 g/10 min at 190 C 2,16 kg Density 0,91-0,93 g/cm3.

Tests Value Unit Melt Flow Rate (MFR) 20 g/10min Density 0.924 g/cm3 Tensile Strength MD12 Mpa TD 10 Elongation at Yield 13 % Elongation at Break 200 % Dark Drop Impact 105 g Brittle Temperature(F 50) -70 C Vicat Softening Point 90 C

LDPE Granules Low-density polyethylene (LDPE) is a synthetic resin using a high-pressure process via free radical polymerization of ethylene and is therefore also called high-pressure polyethyleneâ. It features light, flexible, good freezing resistance and impact resistance. LDPE is chemically stable. It has good resistance to acids (except strongly oxidizing acids), alkali, salt, and excellent electrical insulation properties. Its vapor penetration rate is low.

HDPE: HDPE cable material Property Unit Typical Value Mass density g/cm 3 0.941-0.959 Melt flow Rate(190 centidegree /2.16kg) g/10min 1.0 Tensile yield strength MPa 19.0 Flexural modulus Mpa 965 Elongation@ break % 400 Impact Embrittlement temperature centidegree MAX -118 Dielectric Constant 100KHZ 2.32 1MHZ 2.31 Loss Tangent 100KHZ MAX 0.0001 1MHZ MAX 0.0001 Volume resistivity OHM-CM MIN 1x10 15 Application Mainly used for the production of high toughness of the telephone,cable insulation material LDPE: Physical Properties Test Method Nominal Value Unit Density ISO 1183 0.921 g/cm3 Melt Mass-Flow Rate (MFR) ISO 1133 1.9 g/10min Hardness Shore Hardness (shore D) ISO 868 45 Mechanical Properties Tensile Modulus ISO 527-2 175 MPa Tensile Strength Yield, ISO 527-2 9.0 MPa Break, 13.0 MPa Tensile Strain(Break) ISO 527-2 850 % Modulus of Elasticity Internal Method 250 MPa Thermal Vicat Softening Temperature ISO 306/A50 89.0 �°C Melting Temperature (DSC) DIN 53765 108 �°C Peak Crystallization Temperature (DSC) DIN 53765 97.0 �°C Heat of Fusion DIN 53765 110 J/g Electrical Volume Resistivity ASTM D257 8.5E+15 ohm â?¢cm Dielectric Strength ASTM D149 30.0 kV/mm Dielectric Constant (60Hz) ASTM D150 2.20 % Dissipation Factor (60 Hz) ASTM D150 0.00050 LLDPE Properties Test conditon Test method Test data Unit Density 0.91 MFI 2 Drop impact strength ASTM D-1709 90 g Elongation ,vertical/horizontal ASTM D-882 600/800 % tensilestrength,thermal resistance ASTM D-1004 105/95 Kg/cm elongation ASTM D-638 930 % tensile strength ASTM D-638 180 tensile strength,vertical/horizontal ASTM D-882 380/350 Vicat softening point ASTM D-1525 103 C melting point ASTM D-2117 126 C Turbidity ASTM D-1009 12 % 45 glossness ASTM D-2457 75 %

Application: DS7601 application on PP, textiles, fabrics. Composition: Polypropylene synthesis Pipe grade