EM0141 讲义教程.doc

M0141 2008-N - 1/119 - Nissan Engineering Standard N E S Methods of Test for Coating of Synthetic Resin M 0141 Contents 1. SCOPE.2 2. DEFINITION OF TERMS.2 3. TYPES OF TEST METHOD.2 4. GENERAL TEST METHOD INFORMATION.4 4.1 Test area conditions.4 4.1.1 Painting room.4 4.1.2 Testing room.4 4.2 Test plate shape and dimensions.4 4.3 Test specimen preparation method.5 4.3.1 Test plate preparation method.5 1 Materials.5 2 Molding and.5 3 Test plate pretreatment.5 4.3.2 Specimen sampling methods.5 1 Undiluted specimen sampling.5 2 Specimen sampling.6 4.3.3 Painting.6 1 Test plate painting.6 A Spray painting method.6 B Electrostatic painting method.6 C Other painting methods.6 2 Paint surface film hardening.6 3 Paint surface film curing.6 4 Paint surface film thickness.6 5 Paint surface film thickness measurement.7 6 Painting procedure.7 4.4 Time lapse between test completion and test result confirmation.7 5. PAINT MATERIALS TESTING METHOD.8 5.1 Offensive odor.8 5.2 Paint conditions in the container.9 5.3 Covering power.9 5.4 Specific gravity.10 5.5 Nonvolatile content.12 5.6 Viscosity.13 5.7 Sedimentation.15 5.8 Storage stability.16 5.9 Paint conductivity.17 5.10 Pot life.17 5.11 Drying characteristics.17 5.12 Baking residue.18 6. PAINT SURFACE FILM TEST METHODS.19 6.1 Appearance.19 6.1.1 Paint surface condition.19 6.1.2 Gloss.19 6.1.3 Non-sand recoat characteristics.20 6.1.4 Dust resistance.21 6.1.5 Color disparities.22 6.1.6 Overbaking resistance.26 6.1.7 External appearance of welding line and gate portion paint.26 6.1.8 Brilliance.27 6.2 Physical properties··················································29 6.2.1 Pencil scratch test.29 6.2.2 Impact resistance.30 6.2.3 Chipping resistance.31 6.2.4 Adhesive characteristics.43 6.2.5 Thermal non-adhesive characteristics.47 6.2.6 Abrasiveness.48 6.2.7 Bending and twisting resistance.49 6.2.8 Abrasion resistance.50 6.2.9 Scratching resistance.54 6.2.10 Dry wiping resistance.58 6.2.11 Topcoat paint film internal stress cracking characteristics.61 6.2.12 Handling characteristics.62 6.3 Chemical properties.63 6.3.1 Moisture resistance.63 6.3.2 Acid resistance.69 6.3.3 Alkali resistance.70 6.3.4 Gasoline resistance.70 6.3.5 Engine oil resistance.70 6.3.6 Paint surface protective agent resistance.71 6.3.7 Rust preventive agent resistance.71 6.3.8 Heat cycle resistance.72 6.3.9 Thermal resistance.75 6.3.10 Hot water resistance.76 6.3.11 Antifreeze solution resistance.76 6.3.12 Wax resistance.76 6.3.13 Washer fluid resistance.76 6.3.14 Detergent resistance.77 6.3.15 Perspiration resistance.78 6.3.16 Iron powder exposure-caused damage resistance.79 6.3.17 PVC adhesive resistance.82 6.3.18 Bird droppings resistance.83 6.3.19 Conductive paint surface electrical resistance.84 6.3.20 Jelly percentage.85 6.3.21 Acid rain resistance.86 6.3.22 Paint film yellowing resistance.88 6.3.23 Insect resistance.89 6.3.24 Pollen resistance.89 6.3.25 Sap resistance.90 6.3.26 Paint film moisture permeability.91 6.3.27 Double-sided tape adhesion test.93 6.3.28 White stain resistance.96 6.3.29 Muddy water stain resistance test.96 6.4 Long range properties.98 6.4.1 Weather resistance.98 A Exposure to the weather.98 B Accelerated exposure.101 6.4.2 Sunlight resistance.108 A Exposure to the weather.108 B Accelerated exposure.109 6.5 Continuance performance.110 6.5.1 Continuance test to the flaw resistance.110 ANNEX.114 Normative References and References: See page 112. M0141 2008-N - 2 - 1. SCOPE This Standard specifies paint testing methods for paints used to coat synthetic resin materials and chrome plating 1. Note 1: The synthetic resins described in this Standard include ABS acrylonitrile butadiene styrene PP polypropylene PUR poly urethane urethane rubber and semi-rigid polyurethane foam PBT polybutylene terephthalate AES acrylethylene styrene PA polyamide nylon PET polyethylene terephthalate PVC polyvinylchloride PPO polyphenyleneoxide PMMA acryl POM polyacetal EPDM ethylenepropylene diene copolymer PC polycarbonate UP unsaturated polyester and board etc. Also materials used in this test must conform to NES M 0301 Substance Use Restrictions. Remark: Units and numerical values enclosed in brackets throughout this Standard are based on the conventional unit system and are appended for informative reference. 2. DEFINITION OF TERMS Important terms used in this Standard are defined below. 1 Undiluted specimen : An undiluted paint to be subsequently diluted as specified for test purposes. In general it is called raw paint. 2 Diluted paint : A diluted paint diluted as specified for test purposes. 3 Specimen : A paint supplied to each test. 4 Test plate : A synthetic resin plate fabricated to a specific dimension and shape before being coated with a paint specimen. 5 Test piece : A synthetic resin plate fabricated to a specific dimension and shape after being coated with a paint specimen. 3. TYPES OF TEST METHOD This shows the types of test method. Table 1 Types of test method Classification Test type Item No. Paint Offensive odor Paint surface 5.1 Paint conditions in the container 5.2 Covering power 5.3 Specific gravity 5.4 Nonvolatile content 5.5 Stormer viscometer Rotary viscometer Paint Viscosity Ford cup viscometer 5.6 Sedimentation 5.7 Storage stability 5.8 Paint conductivity 5.9 Pot life 5.10 Drying characteristics 5.11 Paint Baking residue 5.12 Paint surface 6.1.1 Gloss 6.1.2 Non-sand recoat characteristics 6.1.3 Dust resistance 6.1.4 Color disparities 6.1.5 Overbaking resistance 6.1.6 External appearance of welding line and gate portion paint6.1.7 Paint surface Film Appearance Brilliance 6.1.8 M0141 2008-N - 3 - Table 1 Continued Classification Test type Item No. Pencil scratch test 6.2.1 Impact resistance 6.2.2 Gravelometer Chipping resistance Diamond shot method 6.2.3 Checkerboard pattern cut Crosscut Adhesive characteristics Peeling 6.2.4 Thermal non-adhesive characteristics 6.2.5 Abrasiveness 6.2.6 Bending and twisting resistance 6.2.7 Traverse method RCA method Long stroke method New Ford MethodAbrasion resistance Taber method 6.2.8 Car-wash brush method Scratching strength method Sandpaper method 6.2.9 Physical properties Scratching resistance Glass bead method Dry wiping resistance 6.2.10 Topcoat paint film internal stress cracking characteristics 6.2.11 Handling characteristics 6.2.12 Moisture resistance 6.3.1 Acid resistance 6.3.2 Alkali resistance 6.3.3 Gasoline resistance 6.3.4 Engine oil resistance 6.3.5 Paint surface protective agent resistance 6.3.6 Rust preventive agent resistance 6.3.7 Heat cycle resistance 6.3.8 Thermal resistance 6.3.9 Hot water resistance 6.3.10 Antifreeze solution resistance 6.3.11 Wax resistance 6.3.12 Washer fluid resistance 6.3.13 Detergent resistance 6.3.14 Perspiration resistance 6.3.15 Iron powder exposure-caused damage resistance 6.3.16 PVC adhesive resistance 6.3.17 Bird droppings resistance 6.3.18 Conductive paint surface electrical resistance 6.3.19 Paint surface Film Chemical properties Jelly percentage 6.3.20 M0141 2008-N - 4 - Table 1 Continued Classification Test type Item No. Acid rain resistance 6.3.21 Paint film yellowing resistance 6.3.22 Insect resistance 6.3.23 Pollen resistance 6.3.24 Sap resistance 6.3.25 Paint film moisture per meability 6.3.26 Double-sided tape adhesion test 6.3.27 White stain resistance 6.3.28 Muddy water stain resistance 6.3.29 Method A Exposure to the weather Method B 6.4.1 A Continuous method Method A Sunshine weathero-meterCycle methodMethod B Fluorescent ultraviolet ray coagulation method Xenon weatherometer Weather resistance Accelerated exposure Super UV tester 6.4.1 B Exposure to the weather 6.4.2 A Long range properties Sunlight resistance Accelerated exposure 6.4.2 B Paint surface Film Continuance performance Continuance to the flaw resistance 6.5.1 4. GENERAL TEST METHOD INFORMATION 4.1 Test area conditions Painting room and testing room conditions are described below. 4.1.1 Painting room As a general rule room temperature should be maintained at 20±5°C 293±5 K and maximum relative humidity should not exceed 78. There should be no exposure to direct sunlight and no gases and/or vapors that may adversely affect painting operations. If the painting operations may be performed under conditions other than the above the operation areas temperature and relative humidity should be recorded along with the test data. However booth air velocity during spray painting should always be within the 0.3 to 0.8 m/sec. range as a rule. 4.1.2 Testing room 1 Standard conditions As a rule the room temperature should be maintained at 20±1°C 293±1 K and the maximum relative humidity should be maintained at 73±5. There must be no exposure to direct sunlight and no gases and/or vapors that may adversely affect testing operations. 2 Room temperature Room temperature is defined as 5 to 35°C 297 to 308 K at a relative humidity of 45 to 85. If the event tests may be performed under conditions other than the above the operation areas temperature and relative humidity should be recorded along with the test data. 4.2 Test plate shape and dimensions Test plate shape and dimensions are shown in Table 2 below. However test plate shape and dimensions may differ from those specified if agreed upon by the concerned parties. Tests performed on anisotropic plates should be made both parallel and perpendicular to the plates grain. M0141 2008-N - 5 - Table 2 Unit: mm Dimension Classification Width Length Application A 70 150 General purpose natural weather exposure B 70 300 Natural weather exposure C 210 300 Finished product check D 70 110 Accelerated weathering test Xenon weatherometer E 90 190 Gravelometer B-method Remarks: 1. In principle test plate thickness should be in conformity with the actual coated part. ltExamplesgt FRP urethane rubber: t2 ABS PP urethane resin: t3 Urethane semi-hard resin: t10 2. Test plate shape for welding line and gate external appearance is shown in Figure 1. Figure 1 Unit: mm Welding lineGate AGate A Remark: Simultaneously inject resin through two locations of Gate A and Gate A. This will form a welding line at the test plate center. 4.3 Test specimen preparation method 4.3.1 Test plate preparation method 1 Materials Unless otherwise specified test plate material should be identical to the material used in the actual part of a product. 2 Molding and fabrication Molding and fabrication procedures should be agreed upon between the personnel involved in the testing and they should be recorded. Test plates for urethane resin urethane rubber and semi-rigid polyurethane should be machine cut from a larger molded plate. Test plates for FRP ABS and PP shall be either machine cut from a larger molded plate or injection molded. Injection molded plates should use a mold release identical to tha