1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards HIGH CRYSTALLINE POLYPROPYLENE EDS-M-4241 ISSUED DATE: 1999. 01. 09 REVISED DATE: 2007. 12. 17 VERSION: 5 EDS-M-4241HIGH CRYSTALLINE POLYPROPYLENE PAGE: 1/3 ISSUED DATE: 1999. 01. 09 REVISED DATE: 2007. 12. 17 VERSION
2、: 5 GM DAEWOO Auto & Technology 1. SCOPE This specification specifies the general requirements of the high crystalline polypropylene used for vehicle interior and exterior parts. 2. MATERIAL Material indication : PP Detailed contents shall conform to the indication method of synthetic resin material
3、s for vehicles.(Spec. No: GMW3116) 3. APPLICATION 3.1. Type 1 : Material having high strength and impact resistance which especially uses as basis high crystalline polypropylene of II(Isotatic Index) 98% or higher for improved scratch resistance EX) Pillar Trim, Rocker panel, Cover Back Panel, Glove
4、 Box Housing 4. REQUIREMENTS 4.1. Mechanical properties Type 1 Rockwell hardness EDS-T-7517 R Scale 100 Tensile strength (kg/cm2) EDS-T-7511 Test piece (133mm) Test speed (50mm/min) 300 Elongation (%) EDS-T-7511 Test piece (133mm) Test speed (50mm/min) 50 Flexural strength (kg/cm2) EDS-T-7518 Test p
5、iece (12712.76.4mm) Test speed (28mm/min) 500 Flexural modulus (kg/cm2) EDS-T-7510 Test piece (12712.76.4mm) Test speed (28mm/min) 18,000 Impact strength, IZOD (kg cm/cm) EDS-T-7514 Test piece (63.512.73.2mm) Room temperature -30 7 2 EDS-M-4241HIGH CRYSTALLINE POLYPROPYLENE PAGE: 2/3 ISSUED DATE: 19
6、99. 01. 09 REVISED DATE: 2007. 12. 17 VERSION: 5 GM DAEWOO Auto & Technology 4.2. Thermal properties Type 1 Heat deflection Temperature() EDS-T-7520 Test piece (12712.76.4mm) 4.6kg/cm2120 4.3. General properties Density (g/cm3) EDS-T-7406 0.910.01 Melt flow index (g/10min) EDS-T-7516 230, 2.16kg 15
7、Pensile hardness EDS-T-7523 Non EMBO 2B Note) All the mechanical, thermal and general property values above indicate minimum values except having the specified ranges. 5. TEST PIECE AND TEST 5.1. Test piece Test pieces shall be prepared with injection molding. Unless otherwise specified in the requi
8、rements of clause 5, they shall be conditioned at 235K and a relative humidity of 50% for 24 hours or more. 5.2. Test Tests shall be performed at 235K and a relative humidity of 50%. 6. APPROVED MATERIAL Approved materialDivision Approved vendor Approved material Remarks Type 1 LG Chemical, Basell,
9、HONAM Petroleum, SAMSUNG Chemical SO3000, MT5030S, HCP170S, BI692 EDS-M-4241HIGH CRYSTALLINE POLYPROPYLENE PAGE: 3/3 ISSUED DATE: 1999. 01. 09 REVISED DATE: 2007. 12. 17 VERSION: 5 GM DAEWOO Auto & Technology 6.2. Approval and quality assurance procedure All raw materials shall be approved and regul
10、arly inspected for its quality prior to and during mass production delivery according to approval and quality assurance procedure for chemical raw materials (Spec. No. EDS-M-0102). 7. AUTOMOTIVE RESTRICTED HAZARDOUS SUBSTANCES Materials and components of parts must comply with GMW3059. 8. OTHERS 8.1
11、. Coding system Material specification of raw materials shall be indicated in drawings as follows. EDS-M-4241-0 Required physical properties type (clause 4 Material group (None) Material specification number 9. RELATED STANDARDS EDS-M-0102 Procedures for approval of chemical raw material and quality
12、 control 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 the flexural st
13、rength 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
