1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 1 of 45 NAVISTAR, INC. Material, Parts, and Process Specifications
2、 (MPAPS) NUMBER: MPAPS GT-Paint Former Designation: CEMS GT Paint Test Methods TITLE: Paint Test Methods CURRENT REV No.: 1604 DATE: Apr. 2016 WRITTEN/EDITED BY: S. Brailey APPROVED BY: R. Goluch SUPERSEDES: 1512 Dec. 2015 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This sp
3、ecification may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory limits
4、prior to use. Change Notice: Added method GT-12, edited materials for GT-9B. 1.0 APPLICATION The intent of this specification is to define paint test methods in order to ensure acceptable durability and quality levels for the finish on Navistar products and to define requirements and physical proper
5、ties of the various materials used in the painting operation. 2.0 SCOPE This specification covers test methods for paint and coatings. 2.1 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the
6、 MPAPS B-50 specification. 3.0 REFERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following Specifications, Standards, and Regulations are referenced in this specification. Quality System Standard ISO 9001 or TS-16949 ASTM D 1200 ASTM B117 C
7、FR Title 29, Part 1910 ASTM D5201 SAE EA-400 NAVISTAR Manufacturing Std. MS-D-13 FSTM 4203.1 SAE J400 NAVISTAR Engineering Design Std A-16 FSTM 4321.1 ASTM D522 NAVISTAR MPAPS B-50 ASTM D 1640 ASTM D3363 Federal Standard 141a, Method 4250 FSTM 4331.1 ASTM D3359 FSTM 4250 ASTM D5767 ASTM D523 NAVISTA
8、R MPAPS G-9005 ASTM D364 ASTM D7087 NAVISTAR MPAPS P-9543 ASTM D1654 ASTM D2247 The Society For Protective Coatings SSPC-VIS-2 ASTM D4585 ASTM D5402 Federal Standard 141a, Method 6201 ASTM D4141 SAE J2334 NAVISTAR CEMS B-22 NAVISTAR MPAPS G-9009 NAVISTAR MPAPS E-6 NAVISTAR MPAPS G-5 NUMBER: MPAPS GT
9、-Paint TITLE: Paint Test Methods REVISION: 1604 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 2 of 45 3.1 Index
10、Of Test Methods Spec GT TITLE Index Spec GT TITLE Index 1A Nonvolatile Content of Paint by Weight ASTM D5201 7F South Florida Exposure Test For Paint 1B Nonvolatile Content of Paint by Volume ASTM D5201 7G Distilled Water Immersion Test For Paint 2A manufacturers guidelines and actual manufacturing
11、processes should be followed in test preparations. 4.1 Sampling Procedure To ensure correct results, tests for conformance to the requirements of this specification will be conducted on samples of the paint prepared according to the following procedure: 4.1.2 For initial qualification samples and re
12、presentative production samples received in small unpressurized containers, stir the paint by hand with a spatula for one to two minutes. If the paint does not mix readily, do not proceed but contact the vendor. 4.1.3 Using mechanical shakers for small containers such as 3.8 liter (one gallon) cans
13、and rolling machines for large containers such as 208 liter (55 gallon) drums, thoroughly mix the paint in the as-received containers for at least 15 minutes. Do not mix water borne paints on shaker or excessive foam. and air entrainment will result. Mix pressurized containers for two to three minut
14、es and immediately perform spray out tests. For a catalyzed system, mix the paint portion only. Do not mix the catalyst. 4.1.4 After mixing, allow sufficient time for bubbles of entrained air to dissipate. One to two minutes is generally sufficient. Puncture pressurized containers at highest point t
15、o allow propellant to escape slowly, then enlarge hole to permit removal of the paint. 4.1.5 With the paint at a temperature not less than 18C (65F), draw off into a clean, dry metal sample container enough paint to perform the tests required. With pressurized containers, transfer entire contents. S
16、eal the sample container immediately. 4.1.6 Immediately before each test is started, stir the paint in the sample container with a spatula to insure uniform sampling. 4.1.7 For one component system (standard type), draw off sufficient sample from the sample container for the particular test being co
17、nducted and immediately reseal the sample container. 4.1.8 For catalyzed systems, draw off a sufficient sample from the sample container and catalyst from the catalyst container keeping sample and catalyst in separate test containers. 4.1.9 For catalyzed systems, measure out the proper ratio of samp
18、le to catalyst from the test containers per manufacturers recommendations and mix them together thoroughly. 4.1.10 For single component systems, repeat (4.1.6) and (4.1.7) each time a sample is drawn from the sample container. 4.1.11 Repeat (4.1.3) each time a test requires the use of the pressurize
19、d container, except for GT-3F. 4.1.12 For two component systems, repeat (4.1.8) and (4.1.9) each time a sample and catalyst are drawn from their respective containers for a catalyzed system. 4.1.13 For one component systems, all extra sample material may be saved for further use. For two component s
20、ystems, discard all extra mixed sample material in a safe and proper way. 4.2 Panel Preparation (GT-13) This test procedure covers the specific methods for paint panel preparation for each of the grades of paint described in MPAPS G-5. Purchased painted parts shall follow general Method M and use ma
21、terials that closely match production materials, processes and conditions. All test designations refer to the latest issue unless otherwise stated. NUMBER: MPAPS GT-Paint TITLE: Paint Test Methods REVISION: 1604 This document is restricted and may not be sent outside Navistar, Inc. or reproduced wit
22、hout permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 4 of 45 CONTENTS Method Description G-5 Grades G-9009 Class A Exterior mono-coat finish 17HS, 19HS IB, IC B Chassis, engine and repair 32W, 32HS/Ur, -62,
23、-81W IIA, IIB C Interior paint Void See M III D High heat paint Void See M E Flow coat primers Void See M F Casting Sealer Void See M IIC G Primers Void See M H Plastic Primer I Flash Primer -54 J A merchandising paint in a pressurized container. -61 K A cathodic, electro-deposited (e-coat) or auto
24、deposition primer. -56 IP, IIP, E, E1, E2 L Exterior Base Coat/Clear Coat -18 M General Paint III, IIC 4.3 Test Panel Requirements The supplier, submitting a product for qualification, shall use an appropriate number of panels to perform all required tests. Additional factors affecting the number of
25、 test panels include the types of substrates or coatings the product will be applied to and any subsequent coatings that may be applied over the vendors product. Possible substrates include cold rolled steel, galvanized steel, cast iron, aluminum, and various plastics including SMC. Test materials s
26、hall be prepared in a method consistent with current manufacturing materials and processes and cured appropriately. Variations in cure shall be accounted for in the test plan. For additional information, contact the TECHNICAL INFORMATION in section 10.0. Note: Known process and material variations s
27、hall be identified and controlled for in the test plan. Separate panels should be made at minimum and maximum condition for each test. 4.3.1 METHOD A - Exterior mono-coat finish 4.3.1.1 Using the appropriate solvent(s), dilute and activate if necessary one liter of paint prepared according to the st
28、eps outlined in “Sampling Procedure” above to a viscosity as follows: 4.3.1.1.1 Grade -17HS: Dilute the paint to 18+ 1 seconds using a No.4 Ford Cup per ASTM D1200, then activate with isocyanate (6 parts paint:1 part isocyanate, unless otherwise specified by the manufacturer). 4.3.1.1.2 Grade -19HS:
29、 Dilute the paint to 25+ 1 seconds using a No. 4 Ford Cup (unless otherwise specified by the manufacturer). 4.3.1.2 Spray the panels with adjusted paint from step (2.1.2) at 21 to 27C (70 to 80F) using a siphon or pressure gun set at 414 to 483 kPa (60 to 70 psi). Apply a first coat of enamel, flash
30、 dry for three minutes, then apply a second coat of enamel. For paints containing metallic pigments, a thin third coat is recommended. 4.3.1.3 All panels shall be uniformly coated and free from sags, runs, wrinkles, or other irregularities. 4.3.1.4 Dry the panels in a vertical position for five minu
31、tes in still air at 21 to 27C (70 to 80F), then place in a recirculating oven as follows. NUMBER: MPAPS GT-Paint TITLE: Paint Test Methods REVISION: 1604 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppli
32、ers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 5 of 45 4.3.1.5 Grade -17HS: Bake the panels at 94+ 3C (200+ 5F) for thirty minutes. Remove and cool to 21 to 27C (70 to 80F). 4.3.1.6 Grade -19HS: Bake the panels at 121+ 3C (250+ 5F) for thirty minutes. Remove
33、and cool to 21 to 27C (70 to 80F). 4.3.1.7 Determine the dry film thickness of the enamel applied to each panel by measuring the dry film thickness of the enamel and primer and subtracting from this the dry film thickness of the primer only. Panels suitable for use in testing the properties of these
34、 grades of enamel will exhibit a dry film thickness of the enamel topcoat of 43 to 59 m (1.7 to 2.3 mils). 4.3.1.8 Report dry film thickness and how process and material variation were accounted for in the test plan. 4.3.2 METHOD B - Chassis, engine and repair 4.3.2.1 Clean the panels by wiping with
35、 industrial grade xylene per ASTM D364. 4.3.2.2 For zinc phosphated steel panels only, age the cleaned panels for one hour in a recirculating oven 113 + 9C (235 + 15F) and then cool to 21 to 27C (70 to 80F). 4.3.2.3 Protect all panels from rust, oil, fingerprints, or other forms of surface contamina
36、tion. 4.3.2.4 Using the appropriate solvents, dilute one liter of paint which has been prepared according to the steps outlined in “Sampling Procedure” above, to a viscosity as follows - Grade -62: Dilute the paint to 24 + 1 second using a No. 4 Ford cup per ASTM D1200, per the paint manufacturers r
37、ecommendations. 4.3.2.5 For paints containing metallic pigments, spray the panels with adjusted paint from step (2.2.4) at 21 to 27C (70 to 80F) using a siphon or pressure gun set at 552 kPa (80 psi). For paints not containing metallic pigments, spray the panels with adjusted paint from step (2.2.4)
38、 at 21 to 27C (70 to 80F) using a siphon or pressure gun set at 414 to 483 kPa (60 to 70 psi). As an option, paints without metallic pigments may be applied to all panels except those to be used for testing initial gloss per Test Method GT-6B or color per Federal Standard 141a, Method 4250, by dippi
39、ng or with a doctor blade. The panels to be used to determine conformance to the initial gloss or color requirements of this grade of paint will always be sprayed. On all referee questions, a sprayed panel will be used. 4.3.2.6 All panels will be uniformly coated and free from sags, runs, wrinkles,
40、or other irregularities. 4.3.2.7 Dry the panels in still air at 21 to 27C (70 to 80F) or as shown in table, in a vertical position for the time shown below: 3 Minutes 180 F Panel Temp. 15 Minutes 30 Minutes 6 Hours Grade -32W Grade 81W Grade 62 Grade 32HS/Ur 4.3.2.8 Measure the dry film thickness of
41、 the paint applied to each of the panels (after the panel is dry) with a micrometer or other accurate thickness gage. Panels suitable for use in testing will exhibit a dry film thickness of 38 to 51 m (1.5 to 2.0 mils). Exceptions: Grades -32W, -81W and -83W will exhibit a dry film thickness of 30 t
42、o 41 m (1.2 to 1.6 mils). 4.3.2.9 Report dry film thickness and how process and material variation were accounted for in the test plan. NUMBER: MPAPS GT-Paint TITLE: Paint Test Methods REVISION: 1604 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permiss
43、ion from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. APRIL 2016 Page 6 of 45 4.3.3 METHOD H - Plastic Primer 4.3.3.1 All plastic panels are flexed before priming on a 17 inch diameter wood block and then are divided into two equal grou
44、ps. 4.3.3.2 One group is thoroughly dry sanded with stearated 280 grit paper. 4.3.3.3 All panels are cleaned by wiping with either buytl cellosolve or VM see referencing standard. 9.0 TECHNICAL INFORMATION For further information related to the technical content of this specification, contact: Suppl
45、iers may purchase controlled copies of this specification by contacting: Materials Engineering and Technology Dept. 10400 W. North Avenue Melrose Park, IL 60160 E-mail: MaterialsEngineeringN IHS Global Inc. 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com
46、 Website: http:/ NUMBER: MPAPS GT-Paint TITLE: Paint Test Methods REVISION: 1604 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2016 by Navistar, Inc. A
47、PRIL 2016 Page 11 of 45 A.0 GENERAL INFORMATION The materials for test shall be described in the referencing document, along with performance parameters. GT 2A and 2B - Hiding Power Of Paint Wet any evidence of curdling, jelling, skinning or settling that cannot be readily dispersed will constitute
48、a failure. 6. Again using the No. 4 Ford Cup per ASTM D 1200, measure and record the viscosity of the sample after oven aging. REPORT Report the following information: 1. Whether the appearance passes or fails this test. 2. The change in viscosity after oven aging. GT-3C Dip Paint Stability This is
49、a method for evaluating the ability of a paint to withstand degradation after prolonged storage in an open container. APPARATUS 1. No. 4 Ford Cup per ASTM D 1200 (latest issue) 2. Paint can, 0.5 liters (1 pint) capacity and cover 3. Stirring rod, 6 mm (0.25 inch) in diameter, with dimensions as shown in Figure 1 at right. 4. Mechanical paint shaker. 5. Balance with a sensitivity of 1 gram. 6. 110 v
