1、GM DAEWOO Auto & Technology EDSE ngineering,GM DAEWOO Auto & Technology.Standards ETHYLENE VINYL ACETATE EDS-M-4171 ISSUED DATE: 1994. 09. 10 REVISEDDATE: 2003. 04. 22 VERSION: 3EDS-M-4171 ETHYLENE VINYL ACETATE PAGE: 1/3 ISSUED DATE: 1994. 09. 10 REVISED DATE: 2003. 04. 22 VERSION: 3 GM DAEWOO Auto
2、 & Technology 1. SCOPE This specification defines general requirements for raw materials of ethylene vinyl acetate applied to interior and exterior parts of a vehicle. 2. MATERIAL INDICATION Material indication: EVA Detailed contents shall conform to the indication method of synthetic resin material
3、s for vehicles. (Spec. No: EDS- M-0101) 3. APPLICATION Raw materials that have less rigidity and heat resistance than polyethylene but have good cold temperature impact strength, brittle point, and stress cracking resistance. Ex) Energy absorber, mud guard 4. REQUIREMENTS 4.1. Mechanical properties
4、Type 1 Rockwell hardness EDS-T-7517 R Scale 35 Tensile strength (kg/cm 2 ) EDS-T-7511 Test piece (6 3mm) Test speed(50mm/min) 200 Elongation (%) EDS-T-7511 Test piece (6 3mm) Test speed(50mm/min) 500 Flexural strength (kg/cm 2 ) EDS-T-7518 Test piece (127 12.7 6.4mm) Test speed(28mm/min) 850 Flexura
5、l modulus (kg/cm 2 ) EDS-T-7510 Test piece (127 12.7 6.4mm) Test speed(28mm/min) - Impact strength, IZOD (kg cm/cm) EDS-T-7514 Test piece (63.5 12.7 3.2mm) Room temperature -30 NB NBEDS-M-4171 ETHYLENE VINYL ACETATE PAGE: 2/3 ISSUED DATE: 1994. 09. 10 REVISED DATE: 2003. 04. 22 VERSION: 3 GM DAEWOO
6、Auto & Technology 4.2. Thermal properties Type 1 Vicat softening point ( ) EDS-T-7504 1kg 75 4.3. General properties Density (g/cm 3 ) EDS-T-7406 0.93 Melt flow index (g/10min) EDS-T-7516 190 , 2.16kg 2 Note) All the mechanical, thermal and general property values above indicate minimum values excep
7、t density. 5. TEST PIECE AND TEST 5.1. Test piece Test pieces shall be prepared with injection molding. Unless otherwise specified in the requirements of clause 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
8、a relative humidity of 50%. 6. APPROVAL OF RAW MATERIALS 6.1. Approved raw materials Division Approved suppliers Approved raw materials Remarks Type 1 Samsung chemical E112 6.2. Approval and quality assurance procedure All raw materials shall be approved and regularly inspected for its quality prior
9、 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 EDS-A-0101.EDS-M-4171 ETHYLENE VINYL ACETATE PAGE: 3/3 IS
10、SUED DATE: 1994. 09. 10 REVISED DATE: 2003. 04. 22 VERSION: 3 GM DAEWOO Auto & Technology 8. OTHERS 8.1. Coding system Material specification of raw materials shall be indicated in drawings as follows. EDS-M-4171-0 Required property (clause 4) Material group (none) Material specification number 9. R
11、ELATED STANDARDS EDS-A-0101 Automotive restricted hazardous substances for parts EDS-M-0101 Material coding system of automotive plastic parts EDS-M-0102 Procedures for approval of chemical raw material and quality control EDS-T-7406 Determination of volume and density of elastomers EDS-T-7504 The t
12、est method of the vicat softening temperature of thermoplastics 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 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
