2306A high impact PP antistatic Formosa US

2306A high impact PP antistatic Formosa Plastics USA Usage: cover features Note: high rigidity, copolymers, antistatic properties, high impact resistance, good workability, food contact compliance, nuclear important parameters: Melt flow rate: 6 g / 10min density: 0.91 g / cm3 Tensile strength: 31.4 MPa Elongation at break: 5% flexural modulus: 1630 MPa Hardness: 110 Heat distortion temperature: 120 ℃ Manufacturer: Formosa Plastics USA Polypropylene English name: Polypropylene, abbreviation: PP, commonly known as: pleated plastic. Polypropylene is representative of poly-α- olefins, prepared by the polymerization of propylene and a thermoplastic resin which is a propylene monomer CH2 = CH-CH3. Depending on the initiator and the polymerization process, polypropylene can be divided into isotactic polypropylene and atactic polypropylene and syndiotactic polypropylene three configurations. PP formability ⒈ crystalline material, moisture absorption, prone to melt fracture, long-term contact with the hot metal easily decomposed. ⒉ good mobility, but the contraction range and shrinkage large, prone to shrinkage. Dents, deformation. ⒊ cooling speed, gating system and cooling system should be slow to heat, and pay attention to controlling the molding temperature material temperature lower direction clear direction. high pressure is particularly evident at low temperature, mold temperature is below 50 degrees, the plastic is not smooth, easy to produce poor welding, traces, 90 degrees prone to warpage ⒋ Plastic wall thickness shall be uniform to avoid the lack of rubber, sharp corners to prevent stress concentration under certain conditions break down easily. Common products: pots, barrels, furniture, film, bags, caps, car bumpers, polypropylene (PP) molding polypropylene good processability, molded in many ways, such as injection molding, blow molding, vacuum thermoforming , coating, rotational molding, welding, machining, plating and foaming, and sprayed on the metal surface. Wherein the ratio of large injection molding, injection temperature between 180 to 200, the injection pressure at 68.6 ~ 137.2MPa, mold temperature of 40 ~ 60 ℃. Pre-drying at a temperature of about 80 ℃. Avoid prolonged contact with the metal wall PP polypropylene secondary processing is very good, better than polyethylene printability, gravure, offset, plano-concave plates and other printing methods can be used to get a good good heat Printing performance oil, water and other requirements, subject to a corona discharge treatment re-printing. Polypropylene Molding Injection molding conditions: Injection molding machine selection: the selection of the injection molding machine has no special requirements. Since PP has high crystallinity. It requires the use of higher injection pressure and can be multi-stage control of computer injection molding machine. Clamping force general press 3800t / m2 to determine the injection volume of 20% to 85%. Drying: If you do not need drying properly stored. Melting temperature: PP melting point of 160-175 ℃, decomposition temperature 350 ℃, but setting the injection processing temperature should not exceed 275 ℃. Melting zone temperature is preferably at 240 ℃. Mold temperature: mold temperature 50-90 ℃, the size requirements of high temperature with high modulus. Core temperature lower than the cavity temperature above 5 ℃. Injection pressure: the higher injection pressure (1500-1800bar) and holding pressure (about 80% of the injection pressure). About 95% of the whole trip holding pressure, with a longer dwell time. Injection speed: In order to reduce internal stress and deformation, should choose high-speed injection, but some grades of PP and mold NA (bubbles, gas lines). As the surface engraved with patterns of light and dark stripes diffused by the gate, then use the low speed injection and high mold temperature. Runners and Gates: flow channel diameter 4-7mm, needle-shaped gate length 1-1.5mm, diameter as small as 0.7mm. Polygon gate length as short as possible, about 0.7mm, a depth of half the thickness, width of the wall thickness twice, and willing to increase gradually melt flow length of the cavity. Mold must be well vented, vent depth 0.025mm-0.038mm, thickness of 1.5mm, to avoid shrinkage marks, it is necessary to use large round nozzle and a circular flow channel, stiffener thickness is smaller ( for example, the wall thickness of 50-60%). Homo PP products manufactured, the thickness should not exceed 3mm, or there will be bubbles (thick-walled products can only be used copolymer PP). Melt back pressure: Available 5bar melt back pressure, the color powder may be appropriate to increase the back pressure. After processing products: To prevent shrinkage deformation caused after crystallization, products generally require soaked in hot water. Tips: plastic frequent price fluctuations, web price is for reference only, 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.