1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards HIGH THERMAL RESISTANT POLYCARBONATE EDS-M-5302 ISSUED DATE: 2006. 04. 03 REVISED DATE: - VERSION: 1 EDS-M-5302HIGH THERMAL RESISTANT POLYCARBONATE PAGE: 1/3 ISSUED DATE: 2006. 04. 03 REVISED DATE: - VERSION: 1 GM DAE
2、WOO Auto & Technology 1. SCOPE This specification defines general requirements for raw materials of high thermal resistant polycarbonate applied to interior and exterior parts of a vehicle. 2. MATERIAL INDICATION Material indication: PC-HT Detailed contents shall conform to the indication method of
3、synthetic resin materials for vehicles (Spec. No: EDS-M-0101). 3. APPLICATION 3.1. Group 1 3.1.1. Type 1 : High thermal resistant raw materials which heat deflection temperature is about 20 higher than general polycarbonate. Ex) Head lamp bezel 3.1.2. Type 3 : High thermal resistant raw materials wh
4、ich heat deflection temperature is about 50 higher than general polycarbonate. Ex) Fog lamp lens, bulb cap 4. REQUIREMENTS 4.1. Mechanical properties Group 1 Type 1 Type 3 Rockwell hardness EDS-T-7517 R Scale 120 120 Tensile strength (kg/cm2) EDS-T-7511 Test piece (133mm) Test speed (5mm/min) 670 70
5、0 Elongation (%) EDS-T-7511 Test piece (133mm) Test speed (5mm/min) - - Flexural strength (kg/cm2) EDS-T-7518 Test piece (12712.76.4mm) Test speed (2.8mm/min) 1,000 1,000 Flexural modulus (kg/cm2) EDS-T-7510 Test piece (12712.76.4mm) Test speed (2.8mm/min) 25,000 25,500 EDS-M-5302HIGH THERMAL RESIST
6、ANT POLYCARBONATE PAGE: 2/3 ISSUED DATE: 2006. 04. 03 REVISED DATE: - VERSION: 1 GM DAEWOO Auto & Technology Group 1 Type 1 Type 3 Impact strength, notched IZOD (kg cm/cm) EDS-T-7514 Test piece (63.512.73.2mm) Room temperature -30 6.0 6.0 4.0 4.0 Impact strength, unnotched IZOD (kg cm/cm) EDS-T-7514
7、 Test piece (63.512.73.2mm) Room temperature -30 NB NB NB NB 4.2. Thermal properties Heat deflection temperature () EDS-T-7520 Test piece (12712.76.4mm) 18.6 kg/cm2147 170 4.3. General properties Density (g/cm3) EDS-T-7406 1.160.01 1.130.01 Melt flow index (g/10min) EDS-T-7516 2.16kg 330 30 10 Note)
8、 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 injection molding. Unless otherwise specified in the requirements of clause 4, they shall be conditioned at
9、 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. APPROVAL OF RAW MATERIALS 6.1. Approved raw materials Division Approved suppliers Approved raw materials Remark Type 1 BAYER APEC 1795 Group 1 Type 3 BAYER APEC 20
10、97 EDS-M-5302HIGH THERMAL RESISTANT POLYCARBONATE PAGE: 3/3 ISSUED DATE: 2006. 04. 03 REVISED DATE: - VERSION: 1 GM DAEWOO Auto & Technology 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 d
11、elivery 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. 8. OTHERS 8.1. Coding system Material specification of raw materials shall be i
12、ndicated in drawings as follows. EDS-M- 5302 - Required property type (clause 4) Material group (clause 3)Material specification number 9. RELATED STANDARDS EDS-A-0101 Automotive restricted hazardous substances for parts EDS-M-0101 Material coding system of automotive plastic parts EDS-M-0102 Proced
13、ures for approval of chemical raw material and quality control EDS-M-5301 Polycarbonate 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 tens
14、ile 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 EDS-T-7520 Test for deflection temperature of plastics under load
