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PBT 2122 含10%矿物填料,抗撞击
添加时间:2013-05-29 信息来源:http://www.xzslw.com/ 作者:苏州希普能塑料
VANDAR 2122 | PBT | Mineral Reinforced
Description
Vandar 2122 is a polyester alloy which contains 10% mineral filler. It offers exceptional toughness and practical impact strength. This resin offers Class A paintable finish with excellent dimensional stability.
Other Processing
Injection Molding
Rear Temperature 450-480(230-250) deg F (deg C)
Center Temperature 460-490(235-255) deg F (deg C)
Front Temperature 470-500(240-260) deg F (deg C)
Nozzle Temperature 470-510(240-265) deg F (deg C)
Melt Temperature 470-510(240-265) deg F (deg C)
Mold Temperature 100-200(40-95 deg F (deg C)
Back Pressure 0-50 psi
Screw Speed Moderate
Injection Speed Fast
Injection speed, injection pressure and holding pressure have to be optimized to the individual article geometry. To avoid material degradation during processing low back pressure and minimum screw speed have to be used. Overheating of the material has to be avoided, in particular for flame retardant grades. Up to 25% clean and dry regrind may be used.
ISO Data | Mechanical properties | Value | Unit | Test Standard |
Phys | Density | 1300 | kg/m³ | ISO 1183 |
Mold shrinkage - parallel | 1.3-1.5 | % | ISO 294-4 | |
Mold shrinkage - normal | 1.3-1.5 | % | ISO 294-4 | |
Mech | Mechanical properties | Value | Unit | Test Standard |
Tensile stress at 50% strain (50mm/min) | 30 | MPa | ISO 527-2/1A | |
Tensile strain at break (50mm/min) | >50 | % | ISO 527-2/1A | |
Flexural modulus (23℃) | 1900 | MPa | ISO 178 | |
Flexural strength (23℃) | 55 | MPa | ISO 178 | |
Notched impact strength (Izod) @ 23℃ | 15 | kJ/m² | ISO 180/1A | |
Rockwell hardness | 104 | M-Scale | ISO 2039-2 | |
Therm | Thermal properties | Value | Unit | Test Standard |
Melting temperature (10℃/min) | 225 | ℃ | ISO 11357-1,-2,-3 | |
DTUL @ 1.8 MPa | 53 | ℃ | ISO 75-1/-2 | |
DTUL @ 0.45 MPa | 128 | ℃ | ISO 75-1/-2 | |
SpecProd | Test specimen production | Value | Unit | Test Standard |
Processing conditions acc. ISO | 7792-2 | - | Internal | |
Injection molding melt temperature | 260 | ℃ | ISO 294 | |
Injection molding mold temperature | 82 | ℃ | ISO 294 | |
Injection molding flow front velocity | 300 | mm/s | ISO 294 | |
Injection molding hold pressure | 86 | MPa | ISO 294 |
Processing
Pre Drying
Necessary low maximum residual moisture content: 0.02%
To avoid hydrolytic degradation during processing, Vandar resins have to be dried to a moisture level equal to or less than 0.02%. Drying should be done in a dehumidifying hopper dryer capable of dewpoints <-40℉ (-40℃) at 250℉ (121℃) for 4 hours.
For subsequent storage of the material in the dryer until processed (<= 60 h) it is necessary to lower the temperature to 100℃.
Drying time (h):4
Drying temperature (℃):120 - 130
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