1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology. Standards HIGH DENSITY POLYETHYLENE FOR BLOW MOLDING EDS-M-4152 ISSUED DATE: 1997. 12. 10 REVISED DATE: 2004. 02. 16 VERSION: 3 EDS-M-4152HIGH DENSITY POLYETHYLENE FOR BLOW MOLDING PAGE: 1/4 ISSUED DATE: 1997. 12. 10 REVISED D
2、ATE: 2004. 02. 16 VERSION: 3 GM DAEWOO Auto & Technology 1. SCOPE This specification defines general requirements for raw materials high density polyethylene for blow molding applied to interior, exterior or engine and chassis parts of a vehicle. 2. MATERIAL INDICATION Material indication: PE-HD Det
3、ailed contents shall conform to the indication method of synthetic resin materials for vehicles. (Spec. No: EDS-M-0101) 3. APPLICATION Raw materials having high molecular weight for blow molding which have high rigidity and hardness and especially excellent heat resistance and impact strength. Ex) P
4、lastic fuel tank (Mono, Multi layer plastic fuel tank) 4. REQUIREMENTS 4.1. Mechanical properties Type 1 Rockwell hardness EDS-T-7517 R Scale 50 Tensile strength (kg/cm2) EDS-T-7511 Test piece (63mm) Test speed (50mm/min) 230 Elongation (%) EDS-T-7511 Test piece (63mm) Test speed (50mm/min) 500 Flex
5、ural strength (kg/cm2) EDS-T-7518 Test piece (12712.76.4mm) Test speed (28mm/min) 260 Flexural modulus (kg/cm2) EDS-T-7510 Test piece (12712.76.4mm) Test speed (28mm/min) 8,000 Impact strength, IZOD (kg cm/cm) EDS-T-7514 Test piece (63.512.73.2mm) Room temperature -30 NB - EDS-M-4152HIGH DENSITY POL
6、YETHYLENE FOR BLOW MOLDING PAGE: 2/4 ISSUED DATE: 1997. 12. 10 REVISED DATE: 2004. 02. 16 VERSION: 3 GM DAEWOO Auto & Technology 4.2. Thermal proprieties Type 1 Heat deflection temperature () EDS-T-7520 Test piece (12712.76.4mm) 4.6 kg/cm270 4.3. General properties Density (g/cm3) EDS-T-7406 0.95 Me
7、lt flow index (g/10min) EDS-T-7516 190, 21.6kg 5 Stress cracking resistance (Hrs) EDS-T-7532 500 Note) 1. All the mechanical, thermal and general property values above indicate minimum values except having specified ranges. 2. Stress cracking resistance is measured for the only materials used for pl
8、astic fuel tank. 4.4. Additional properties (refer to Note 1) Tensile strength / ElongationNote1)(kg/cm2 / % at break) 230/500 ESCR (Hrs)Note 2)500 High speed impact strength (J)Note 3)19 The additional properties shall be evaluated when raw material is used only for multi layer plastic fuel tank. N
9、ote 1)the measured value at break point under conditions that test piece for measuring of tensile strength is aged at 93 for 3 weeks, and then placed in the desiccator until room temperature condition (test speed 50mm/min). Note 2) evaluate the test piece for measuring of ESCR(Environmental Stress C
10、rack Resistance) under ASTM 1693, Condition A, f(50)h,100% lgepal condition. Note 3)evaluate the test piece of 1001003mm using the DYNATUP tester (test speed 6.7m/sec, -30). EDS-M-4152HIGH DENSITY POLYETHYLENE FOR BLOW MOLDING PAGE: 3/4 ISSUED DATE: 1997. 12. 10 REVISED DATE: 2004. 02. 16 VERSION: 3
11、 GM DAEWOO Auto & Technology 5. TEST PIECE AND TEST 5.1. Test piece Test pieces shall be prepared with compression molding. Unless otherwise specified in the requirements of clause 4, they shall be conditioned at 235K and a relative humidity of 50% for 24 hours or more. 5.2. Test Tests shall be perf
12、ormed at 235K 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 DAELIM industrial, HONAM petrochemical, BASF, PAXON, ATOFINA HXM 50100, 8301B, 4261AG, 4261AQ, MS201B 6.2. Approval and quality ass
13、urance 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 chemical raw materials(Spec. No. EDS-M-0102). 7. AUTOMOTIVE RESTRICTED HAZARDOUS SUBSTANCES Materials an
14、d components of parts must comply with EDS-A-0101. EDS-M-4152HIGH DENSITY POLYETHYLENE FOR BLOW MOLDING PAGE: 4/4 ISSUED DATE: 1997. 12. 10 REVISED DATE: 2004. 02. 16 VERSION: 3 GM DAEWOO Auto & Technology 8. OTHERS 8.1. Coding system Material specification of raw materials shall be indicated in dra
15、wings as follows. EDS-M-4152- 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 Plastic Parts EDS-M-0102 Procedures for Approval
16、of Chemical Raw Material and Quality 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 Me
17、thod for Determining the Flexural Strength of Plastics EDS-T-7516 Test Method for the Melt Flow Index of Thermoplastics EDS-T-7517 Test Method for Rockwell Hardness of Plastics EDS-T-7518 Test Method for the Flexural Strength of Plastics EDS-T-7520 Test Method for Deflection Temperature of Plastics Under Load EDS-T-7532 Test Method for the Resistance to Environmental Stress-Cracking of Plastic Fuel Tank Raw Material
