Lens Material PC German Covestro 1897BK High Flow Easy Release Anti UV
Category:
Rubber and plastic/engineering plastic/PC
Model:
Brand:
Bayer Germany
Retail Price
50.00USD
重量
kg
- Product Description
-
Description :
Lens Material PC German Covestro 1897BK High Flow Easy Release Anti UV
PC Covestro, Shabo Foundation and other models are complete and in stock. You can directly contact Ms. He or Manager Niu!
1、 Product Introduction
PC has a high water absorption rate, so it must be preheated and dried before processing. Pure PC is dried at 120 ℃, while modified PC is generally dried at 110 ℃ for more than 4 hours. The drying time cannot exceed 10 hours. Generally, the air extrusion method can be used to determine whether the drying is sufficient. The proportion of recycled materials can reach 20%. In some cases, 100% recycled materials can be used, and the actual amount depends on the quality requirements of the product. Recycled materials cannot be mixed with different color masterbatch at the same time, otherwise it will seriously damage the properties of the finished product.
If the degree of dryness is poor, there is much water in the plastic, the melt viscosity drops sharply, and the melt flows out rapidly. The gun barrel nozzle continuously sprays foam shaped snowballs, white smoke or gas in the crackling sound.
If the drying degree is average, the molten material slowly injected into the nozzle will be turbid and unclear, with a dull surface and a small amount of small bubbles inside. The formed workpiece will have a rough and dull surface near the gate or other parts, and its impact strength will be low
Due to cost and other reasons, PC products nowadays often use modified materials, especially electrical products, which also need to increase fire resistance. When forming flame-retardant PC and other plastic alloy products, the requirements for the plasticizing system of the injection molding machine are good mixing and corrosion resistance, which conventional plasticizing screws are difficult to achieve.
2、 Product parameters
additive UV stabilizer
feature Good liquidity
Good demolding performance
purpose lens
RoHS compliance RoHS compliance
processing method injection molding
Physical properties rated value system of units test method Density (23 ° C) one point one five g/cm3 ISO 1183 Melt flow rate (melt flow rate) (330 ° C/2.16 kg) nineteen g/10 min ISO 1133 Dissolved Volume Flow Rate (MVR) (330 ° C/2.16 kg) eighteen cm3/10min ISO 1133 Shrinkage rate 1 ISO 294-4 Vertical flow direction: 2.00 mm zero point eight five % ISO 294-4 Flow direction: 2.00 mm zero point eight five % ISO 294-4 water absorption rate ISO 62 Saturation, 23 ° C zero point three zero % ISO 62 Balance, 23 ° C, 50% RH zero point one two % ISO 62 hardness rated value system of units test method Ball pressure hardness one hundred and twenty-seven MPa ISO 2039-1 mechanical properties rated value system of units test method Tensile modulus (23 ° C) two thousand four hundred and fifty MPa ISO 527-2/1 Tensile stress (yield, 23 ° C) seventy-four MPa ISO 527-2/50 Tensile strain (yield, 23 ° C) six point six % ISO 527-2/50 Nominal tensile fracture strain (23 ° C) > 50 % ISO 527-2/50 Bending modulus 2 (23 ° C) two thousand four hundred and fifty MPa ISO 178 Bending stress 3 (23 ° C) one hundred and eight MPa ISO 178 impact performance rated value system of units test method Impact strength of simply supported beam without notch ISO 179/1eU -30°C no fracture ISO 179/1eU 23°C no fracture ISO 179/1eU thermal performance rated value system of units test method Heat Deflection Temperature 0.45 MPa, unannealed one hundred and seventy-two °C ISO 75-2/B 1.8 MPa, unannealed one hundred and fifty-seven °C ISO 75-2/A Vicat softening temperature one hundred and eighty-two °C ISO 306/B120 
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Key words:- Lens Material PC
