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. 2014 by Navistar, Inc. FEBRUARY 2014 Page 1 of 8 NAVISTAR, INC. Material, Parts, and Process Specificatio
2、ns (MPAPS) NUMBER: MPAPS GT-31 Former Designation: CEMS GT-31 TITLE: Accelerated Weathering of Non-Metallic Materials CURRENT REV No.: 1402 DATE: February 2014 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: CEMS GT-31 Feb. 2010 PRINTED COPIES OF THIS DOCUMENT
3、 MUST BE VERIFIED FOR CURRENT REVISION This specification 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 det
4、ermine the applicability of regulatory limits prior to use. Change Notice: Added section 2.2 for reference documents and sections 3.3 and 4.5 for sample evaluation. Updated section 6.0. Editorial changes. 1.0 APPLICATION This method outlines conditions required for the accelerated weathering of non-
5、metallic materials for the purpose of acceptance testing. 2.0 SCOPE Non-metallic materials submitted for approval to Materials Engineering that are subject to ultraviolet weatherability requirements are to be tested as stated in the following methods. The specific method required, test duration, and
6、 pass/fail criteria are described in the applicable material specification. Refer to the General Information section on page 2. 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 MPAPS
7、B-50 specification. 2.2 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. NAVISTAR MPAPS B-50 ASTM G154 SAE J2412 SAE J2527 3.0 PREFERRED TEST METHOD
8、S New materials submitted for approval should be qualified using one of the following two methods, depending upon application. 3.1 Method A Interior Exposure (See Appendix A.1 for guidance on recommended exposure levels for interior trim materials.) Xenon Arc exposure per SAE J2412 with the followin
9、g modifications: The filter shall provide a spectral power distribution similar to that of a Window-Q filter. The irradiance control point shall be 0.74W/m2 at 420 nm. 3.2 Method B Exterior Exposure Xenon Arc exposure per SAE J2527 with the following modifications: The filter shall provide a spectra
10、l power distribution similar to that of a Daylight-Q filter. NUMBER: MPAPS GT-31 TITLE: ACCELERATED WEATHERING OF NON-METALLIC MATERIALS REVISION: 1402 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Supplier
11、s are required to assume all patent liability. 2014 by Navistar, Inc. FEBRUARY 2014 Page 2 of 8 3.3 Sample Evaluation The material shall not show any surface deterioration, minimal color or gloss change, warpage, sag, staining, delamination, or other undesirable effects after exposure. Objectionable
12、 color change is defined as a measured color change of E 3 measured at the same location before and after exposure or on an as-received sample and exposed sample. Spectrophotometric measurements of samples shall be taken with the specular component included (SPI) or with a 0/45 (45/0) geometry. The
13、colorimetric data shall be calculated using CIE 1964 10 observer data for Illumination D65. Three points must be measured and averaged in a general region per measurement reported. Exposed samples may be washed with water and blotted dry with a clean cloth prior to measurement. 4.0 ALTERNATE TEST ME
14、THODS Existing materials may have previously been qualified using one of the following methods, and some material specifications may continue to reference these methods. If so, the test data remains valid, and there is no need to requalify the material. The method used for material qualification sha
15、ll be stated in all relevant documentation. 4.1 Method C Exterior Exposure QUV exposure per ASTM G154 using UVA-340 lamps at an irradiance of 0.77 W/m2. Test cycle will alternate 8 hours of ultraviolet light exposure at 60 C, followed by 4 hours of condensing humidity at 50 C, and then repeat. 4.2 M
16、ethod D Exterior Exposure QUV exposure per ASTM G154 using UVB-313 QFS-40 lamps at an irradiance of 0.43 W/m2. Test cycle will alternate 8 hours of light exposure at 60C, followed by 4 hours of condensing humidity at 50 C, and then repeat. 4.3 Method E Interior Exposure QUV exposure per ASTM G154 us
17、ing UVA-351 lamps. Test cycle will alternate 8 hours of ultraviolet light exposure at 50 C, followed by 4 hours of condensing humidity at 40 C, and then repeat. 4.4 Method F Interior Exposure QUV exposure per ASTM G154 using UVA-351 lamps. Test cycle is continuous ultraviolet light at 50 C only, wit
18、h no condensing humidity. 4.5 Sample Evaluation The material shall not show any surface deterioration, minimal color or gloss change, warpage, sag, staining, delamination, or other undesirable effects after exposure. Objectionable color change is defined as a measured color change of E 3 measured at
19、 the same location before and after exposure or on an as-received sample and exposed sample. Spectrophotometric measurements of samples shall be taken with the specular component included (SPI) or with a 0/45 (45/0) geometry. The colorimetric data shall be calculated using CIE 1964 10 observer data
20、for Illumination D65. Three points must be measured and averaged in a general region per measurement reported. Exposed samples may be washed with water and blotted dry with a clean cloth prior to measurement. Additional mechanical testing may be required on select samples from Navistar Design or Mat
21、erials Engineering if UV exposure is expected to result in loss of mechanical properties (i.e. Nylon materials). Specific instructions and expectations to be provided by Navistar Engineering. NUMBER: MPAPS GT-31 TITLE: ACCELERATED WEATHERING OF NON-METALLIC MATERIALS REVISION: 1402 This document is
22、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. 2014 by Navistar, Inc. FEBRUARY 2014 Page 3 of 8 5.0 REPORT Requirements for reporting test results are stated in the appl
23、icable materials specifications. 6.0 TECHNICAL INFORMATION For further information related to the technical content of this specification, contact: Suppliers may purchase controlled copies of this specification by contacting: Materials Engineering and Technology Dept. 10400 W. North Avenue Melrose P
24、ark, 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 Website: http:/ NUMBER: MPAPS GT-31 TITLE: ACCELERATED WEATHERING OF NON-METALLIC MATERIALS REVISION: 1402 This document is restricted and may not
25、 be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2014 by Navistar, Inc. FEBRUARY 2014 Page 4 of 8 A.0 GENERAL INFORMATION (NOT A REQUIREMENT) Wavelength sizes Type of UV Light Wavelength, nanom
26、eter (nm) UV-A 320-380 nm UV-B 280-320 nm UV-C 180-280 nm Natural Sunlight 280-800 nm The Navistar Materials Engineering Group has determined that the following are equivalent: Xenon testing: 1200 kJ = 1000 hrs = one year South Florida exposure UV testing: 500 hrs UV-B 313 exposure = one year South
27、Florida exposure UV testing: 1000 hrs UV-A 340 exposure = one year South Florida exposure UV testing: 1000 hrs UV-A 351 exposure = one year South Florida exposure A.1 UV ZONES FOR INTERNATIONAL TRUCK INTERIORS Plastic Parts, Woven and Knit Fabric Trim, Vinyl Coated Trim and Composite Trim Panels Zon
28、e Application Requirement (kJ/m) A (in red) Direct light above beltline (top of door and IP) Plastic Parts - 3,600 Vinyl Parts 1,280 Leather Steering wheel only - 450 B (in yellow) Direct light below beltline (lower door and rearward facing portion of IP) Plastic Parts - 2,300 Leather 225 All other
29、Soft Trim - 640 C (in blue) Indirect light (floor, back panel, overhead console, headliner, sleeper components) Plastic Parts - 1,200 All other Soft Trim - 225 NOTE: Painted metal shall meet the requirements of the paint specification (usually TMS-9009). Additional information is provided for Navist
30、ar employees in the Restricted CEMS GT-31 Appendix. See diagrams below for zone locations NUMBER: MPAPS GT-31 TITLE: ACCELERATED WEATHERING OF NON-METALLIC MATERIALS REVISION: 1402 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate
31、Technical Standards. Suppliers are required to assume all patent liability. 2014 by Navistar, Inc. FEBRUARY 2014 Page 5 of 8 Figure 1. Zone “C” (in blue) all components in sleeper NUMBER: MPAPS GT-31 TITLE: ACCELERATED WEATHERING OF NON-METALLIC MATERIALS REVISION: 1402 This document is restricted a
32、nd may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2014 by Navistar, Inc. FEBRUARY 2014 Page 6 of 8 Figure 2. Zone “A” (in red) above door beltline, top of IP, steering wheel, and visor
33、 Zone “B” (in yellow) below door beltline, IP face, and seat Zone “C” (in blue) headliner and floor mat NUMBER: MPAPS GT-31 TITLE: ACCELERATED WEATHERING OF NON-METALLIC MATERIALS REVISION: 1402 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission f
34、rom Corporate Technical Standards. Suppliers are required to assume all patent liability. 2014 by Navistar, Inc. FEBRUARY 2014 Page 7 of 8 Figure 3. Zone “A” (in red) above door beltline, top of IP, steering wheel, and visor Zone “B” (in yellow) below door beltline, IP face, and seat Zone “C” (in bl
35、ue) headliner and floor mat NUMBER: MPAPS GT-31 TITLE: ACCELERATED WEATHERING OF NON-METALLIC MATERIALS REVISION: 1402 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. 2014 by Navistar, Inc. FEBRUARY 2014 Page 8 of 8 Figure 4. Zone “B” (in yellow) back panel of day cab Zone “C” (in blue) floor mat
