Samsung Total SH52C PP high gloss high rigidity Uses: Other Characteristics Note: workability, high gloss, high rigidity important parameters: melt flow rate: 12 g / 10min density: 1.11 g / cm3 mold shrinkage: 1.3% notched impact strength : 4 Tensile strength: 38 MPa Elongation at break: 40% flexural modulus: 2256 MPa Hardness: 102 Heat distortion temperature: 133 ℃ Manufacturer: Samsung Total Company Limited PP polypropylene, commonly known as the pleated plastic. English character polypropylene is a crystalline polypropylene plastic, transparent than PE, non-toxic, odorless, low density. Strength, stiffness, hardness, heat resistance are superior to low-pressure polyethylene, can be used at 100 degrees. Has good electrical properties and high-frequency insulation from humidity, but the low temperature brittle, do not wear, easy to aging . Common acid and alkali organic solvents it almost does not work, can be used for utensils. Gravity: 0.9-0.91 g / cc molding shrinkage: 1.0-2.5% molding temperature: 160-220 ℃. PP Application: suitable for production of general machinery parts, corrosion-resistant parts and insulating parts; Common products: pots, barrels, furniture, film, bags, caps, car bumpers, TV, radio casing, electrical insulation materials, pipe corrosion , plates, tanks, flat, fibers, packaging films, duct PP Injection molding: If you do not need drying properly stored. Pre-drying at a temperature of about 80 ℃. Melting temperature: 220-275C, careful not to exceed 275C. Mold temperature: 40-80C, recommend the use of 50C. The degree of crystallinity determined by the mold temperature. Injection temperature: between 180-200 ℃, injection pressure: injection pressure in 68.6-137.2MPa, can be as large as 1800bar. Injection speed: high-speed injection molding can make the internal pressure is reduced to a minimum. If the product surface defects, so you should use low-speed injection molding under high temperature. Runners and gates: for cold runner, the typical flow channel diameter is 4 ~ 7mm. We recommend using whole body is circular sprue and runner. All types of gate can be used. Typical gate diameter is 1 ~ 1.5mm, but can also be used as small as 0.7mm gate. For the edge of the gate, the minimum gate depth should be half the thickness; the smallest gate width should be at least twice the thickness. PP materials can use the hot runner system. To avoid sink marks, it is necessary to use large round nozzle and a circular flow channel, thickness of the reinforcing ribs is smaller (for example, the wall thickness of 50-60%). PP-made products, the thickness of no more than 3mm, or there will be bubbles (thick-walled products can only be used copolymer PP). Tips: plastic frequent price fluctuations, the page did not write specific offer, For more comprehensive details, quotes! Please use the QQ or telephone direct consultation. If you need detailed material (material, UL report, RoSH standard, SGS test reports, etc.), please contact our staff on request. Thank you for your cooperation and support!