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PP PP-GF40-04 含40%长玻纤增强,耐低温撞击

添加时间:2013-06-20  信息来源:http://www.simibc.com/  作者:苏州希普能塑料
celstran PP PP-GF40-04
 
CELSTRAN PP-GF40-04 | PP | Glass Reinforced
 
Description
Material code according to ISO 1043-1: PP
 
Heat stabilized polypropylene reinforced with 40 weight percent long glass fibers. The fibers are chemically coupled to the polypropylene matrix. The pellets are cylindrical and normally as well as the embedded fibers 10 mm long.
 
Parts molded of CELSTRAN have outstanding mechanical properties such as high strength and stiffness combined with high heat deflection. The notched impact strength is increased at elevated and low temperatures due to the fiber skeleton built in the parts. The long fiber reinforcement reduces creep significantly.
 
The very isotropic shrinkage in the molded parts minimizes the warpage. Complex parts can be manufactured with high reproducibility by injection molding.
 
Application field: Functionial/structural parts for automotive
 
Other Processing
Injection Molding
During the processing of CELSTRAN it is important to watch and control melt shear, for excessive shear reduces fiber length and mechanical performance as well.
 
Processing recommendation:
- Conventional 3 zone screw, screw diameter minimum 40 mm
- Design flow channels for low melt shear
- Back pressure and screw rotation to realize a continous plastification performance and thus a homogeneous melt.
- Apply higher temperature settings than for short fiber compounds
 
Melt temperature (in the srew anteroom):260-290℃
Mold surface temperature:40-70℃
 
ISO Data Mechanical properties Value Unit Test Standard
Phys Density 1220 kg/m³ ISO 1183
Mech Mechanical properties Value Unit Test Standard
Tensile modulus (1mm/min) 9100 MPa ISO 527-2/1A
Tensile modulus (80℃) 6500 MPa ISO 527-2/1A
Tensile strength (80℃) 63 MPa ISO 527-2/1A
Tensile stress at break (5mm/min) 110 MPa ISO 527-2/1A
Tensile strain at break (5mm/min) 2 % ISO 527-2/1A
Elongation at break (80℃) 2.5 % ISO 527-2/1A
Flexural modulus (23℃) 9500 MPa ISO 178
Flexural modulus (80℃) 6400 MPa ISO 178
Flexural strength (23℃) 190 MPa ISO 178
Flexural strength (80℃) 100 MPa ISO 178
Charpy impact strength @ 23℃ 59 kJ/m² ISO 179/1eU
Charpy impact strength @ -30℃ 55 kJ/m² ISO 179/1eU
Charpy notched impact strength @ 23℃ 16 kJ/m² ISO 179/1eA
Charpy notched impact strength @ -30℃ 13 kJ/m² ISO 179/1eA
Therm Thermal properties Value Unit Test Standard
Melting temperature (10℃/min) 162 ISO 11357-1,-2,-3
DTUL @ 1.8 MPa 152 ISO 75-1/-2
DTUL @ 8.0 MPa 128 ISO 75-1/-2
SpecProd Test specimen production Value Unit Test Standard
Injection molding melt temperature 270 ISO 294
Injection molding mold temperature 70 ISO 294
Injection molding flow front velocity 80 mm/s ISO 294
Injection molding hold pressure 83 MPa ISO 294
 
Processing
Pre Drying
Necessary low maximum residual moisture content: 0.2%
 
It is normally not necessary to dry CELSTRAN PP. However, should there be surface moisture (condensate) on the molding compound as a result of incorrect storage, drying is required. A circulating air drying cabinet can be used for this purpose if the gran
 
The product can then be stored in standard conditions until processed.
 
Drying time (h):4
Drying temperature (℃):90 - 100
 
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