1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards 25% TALC FILLED POLYPROPYLENE EDS-M-4237 ISSUED DATE: 1994. 08. 16 REVISED DATE: 2007. 12. 17 VERSION: 6 EDS-M-423725% TALC FILLED POLYPROPYLENE PAGE: 1/3 ISSUED DATE: 1994. 08. 16 REVISED DATE: 2007. 12. 17 VERSION:
2、6 GM DAEWOO Auto & Technology 1. PURPOSE This specification defines general requirements for raw materials of 25% talc filled polypropylene applied to interior and exterior parts of a vehicle. 2. SCOPE This specification shall be applied to raw materials of 25% talc filled polypropylene used in all
3、passenger cars by GM DAEWOO Auto & Technology Company (hereinafter referred to as the “GMDAT“). 3. MATERIAL INDICATION Material indication: % PP-T25# Detailed contents shall conform to the indication method of synthetic resin materials for vehicles (Spec. No: GMW3116). 4. APPLICATION 4.1. Group 1: T
4、alc filled raw materials, which have excellent heat resistance and dimensional stability and use high crystalline PP as base especially for the improvement of impact resistance, scratch resistance and rigidity. 4.2. Group 2: Talc filled raw materials, which have excellent heat resistance and dimensi
5、onal stability and use PP-copolymer as base especially for the improvement of impact resistance. 4.3. Group 3: Talc filled raw materials, which have excellent heat resistance and dimensional stability and PP-homopolymer as base especially for the improvement of rigidity. 5. REQUIREMENTS 5.1. Mechani
6、cal properties Group 2 Type 1 Rockwell hardness EDS-T-7517 R Scale 90 Tensile strength (kg/cm2) EDS-T-7511 Test piece (133mm) Test speed (5mm/min) 300 Elongation (%) EDS-T-7511 Test piece (133mm) Test speed (5mm/min) 30 EDS-M-423725% TALC FILLED POLYPROPYLENE PAGE: 2/3 ISSUED DATE: 1994. 08. 16 REVI
7、SED DATE: 2007. 12. 17 VERSION: 6 GM DAEWOO Auto & Technology Group 2 Type 1 Flexural strength (kg/cm2) EDS-T-7518 Test piece (12712.76.4mm) Test speed (2.8mm/min) 450 Flexural modulus (kg/cm2) EDS-T-7510 Test piece (12712.76.4mm) Test speed (2.8mm/min) 30,000 Impact strength, IZOD (kg cm/cm) EDS-T-
8、7514 Test piece (63.512.73.2mm) Room temperature -30 4 - 5.2. Thermal proprieties Heat deflection temperature () EDS-T-7520 Test piece (12712.76.4mm) 4.6 kg/cm2135 5.3. General properties Density (g/cm3) EDS-T-7406 1.130.02 Melt flow index (g/10min) EDS-T-7516 230, 2.16kg 10 Talc contents (%) EDS-T-
9、7301 253 Note) All the mechanical, thermal and general property values above indicate minimum values except having the specified ranges. 6. TEST PIECE AND TEST 6.1. Test piece Test pieces shall be prepared with injection molding. Unless otherwise specified in the requirements of clause 5, they shall
10、 be conditioned at 235K and a relative humidity of 50% for 24 hours or more. 6.2. Test Tests shall be performed at 235K and a relative humidity of 50%. EDS-M-423725% TALC FILLED POLYPROPYLENE PAGE: 3/3 ISSUED DATE: 1994. 08. 16 REVISED DATE: 2007. 12. 17 VERSION: 6 GM DAEWOO Auto & Technology 7. APP
11、ROVAL OF RAW MATERIALS 7.1. Approved raw materials Division Approved suppliers Approved raw materials Remarks Group 2 Type 1 Basell MT4221 7.2. Approval and quality assurance procedure All raw materials shall be approved and regularly inspected for its quality prior to and during mass production del
12、ivery according to approval and quality assurance procedure for chemical raw materials (Spec. No. EDS-M-0102). 8. AUTOMOTIVE RESTRICTED HAZARDOUS SUBSTANCES Materials and components of parts must comply with GMW3059. 9. OTHERS 9.1. Coding system Material specification of raw materials shall be indic
13、ated in drawings as follows. EDS-M-4237- Required property type (clause 5) Material group (clause 4)Material specification number 10. RELATED STANDARDS 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)
14、 of polymeric materials EDS-T-7406 Determination of volume and density of elastomers EDS-T-7510 Testing of plastics determination of the modulus 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
15、the flexural strength of plastics EDS-T-7516 The test method for the melt flow index of thermoplastics 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 GMW 3059 Restricted and reportable substance for parts GMW 3116 Recyclability / recoverability guidelines
