1、GM DAEWOO Auto & Technology EDSE ngineering,GM DAEWOO Auto & Technology.Standards 40% GLASS FIBER MAT REINFORCED POLYPROPYLENE EDS-M-4256 ISSUED DATE: 2001. 06. 30 REVISEDDATE: 2003. 05. 06 VERSION: 3EDS-M-4256 40% GLASS FIBER MAT REINFORCED POLYPROPYLENE PAGE: 1/3 ISSUED DATE: 2001. 06. 30 REVISED
2、DATE: 2003. 05. 06 VERSION: 3 GM DAEWOO Auto & Technology 1. SCOPE This specification defines general requirements for raw materials of 40% glass fiber mat reinforced polypropylene applied to interior and exterior parts of a vehicle. 2. MATERIAL INDICATION Material indication: PP-GM40 Detailed conte
3、nts shall conform to the indication method of synthetic resin materials for vehicles. (Spec. No: EDS- M-0101) 3. APPLICATION Glass fiber mat reinforced raw materials that have excellent heat resistance, rigidity, impact strength and dimensional stability and use PP-Homopolymer as base resin. Ex) Sea
4、t Back Frame 4. REQUIREMENTS 4.1. Mechanical properties Type 1 Rockwell hardness EDS-T-7517 R Scale 110 Tensile strength (kg/cm 2 ) EDS-T-7511 Test piece (13 3mm) Test speed (5mm/min) 800 Elongation (%) EDS-T-7511 Test piece (13 3mm) Test speed (5mm/min) - Flexural strength (kg/cm 2 ) EDS-T-7518 Tes
5、t piece (127 12.7 6.4mm) Test speed (2.8mm/min) 1,100 Flexural modulus (kg/cm 2 ) EDS-T-7510 Test piece (127 12.7 6.4mm) Test speed (2.8mm/min) 50,000 Impact strength, IZOD (kg cm/cm) EDS-T-7514 Test piece (63.5 12.7 6.4mm) Room temperature -30 NBEDS-M-4256 40% GLASS FIBER MAT REINFORCED POLYPROPYLE
6、NE PAGE: 2/3 ISSUED DATE: 2001. 06. 30 REVISED DATE: 2003. 05. 06 VERSION: 3 GM DAEWOO Auto & Technology 4.2. Thermal properties 1 Type Heat deflection temperature ( ) EDS-T-7520 Test piece (127 12.7 6.4mm) 18.6kg/cm 2 150 4.3. General properties Density (g/cm 3 ) EDS-T-7406 1.21 0.05 Glass fiber co
7、ntents (%) EDS-T-7301 40 5 Note) All the mechanical, thermal and general property values above indicate minimum values except having specified ranges. 5. TEST PIECE AND TEST 5.1. Test piece Test pieces shall be prepared with compression molding. Unless otherwise specified in the requirements of clau
8、se 4, they shall be conditioned at 23 5K and a relative humidity of 50% for 24 hours or more. 5.2. Test Tests shall be performed at 23 5K and a relative humidity of 50%. 6. APPROVAL OF RAW MATERIALS 6.1. Approved raw materials Division Approved suppliers Approved raw materials Remarks Type 1 Hanwha
9、chemical GMT RD40 6.2. Approval and quality assurance procedure All raw materials shall be approved and regularly inspected for its quality prior to and during mass production delivery according to approval and quality assurance procedure for plastic raw materials (Spec. No. EDS-M-0102). 7. AUTOMOTI
10、VE RESTRICTED HAZARDOUS SUBSTANCES Materials and components of parts must comply with EDS-A-0101.EDS-M-4256 40% GLASS FIBER MAT REINFORCED POLYPROPYLENE PAGE: 3/3 ISSUED DATE: 2001. 06. 30 REVISED DATE: 2003. 05. 06 VERSION: 3 GM DAEWOO Auto & Technology 8. OTHERS 8.1. Coding system Material specifi
11、cation of raw materials shall be indicated in drawings as follows. EDS-M-4256 - 0 Required property type(clause 4) Material group(none) Material specification number 9. RELATED STANDARDS EDS-A-0101 Automotive restricted hazardous substances for parts EDS-M-0101 Material coding system of automotive p
12、lastic parts EDS-M-0102 Procedures for approval of chemical raw material and quality control EDS-T-7301 Test method for determining the residue on ignition (ash) of polymeric materials EDS-T-7406 Determination of volume and density of elastomers EDS-T-7510 Testing of plastics determination of the mo
13、dulus of elasticity by tensile, compression and flexural test EDS-T-7511 Test method for the tensile property of plastics EDS-T-7514 Test method for determining the flexural strength of plastics EDS-T-7517 The test method for Rockwell hardness of plastics EDS-T-7518 The method for the flexural strength of plastics EDS-T-7520 Test for deflection temperature of plastics under load
