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. 2018 by Navistar, Inc. FEBRUARY 2018 Page 1 of 5 NAVISTAR, INC. Material, Parts, and Process Specificatio
2、ns (MPAPS) NUMBER: MPAPS G-9017 Former Designation: TMS-9017 TITLE: Gel Coat Properties for Exterior Panels CURRENT REV No.: 1802 DATE: Feb. 2018 WRITTEN/EDITED BY: S. Brailey APPROVED BY: R. Goluch SUPERSEDES: Rev. 1102 Feb. 2011 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION
3、 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 determine the applicability of regulatory
4、 limits prior to use. 1.0 APPLICATION This specification covers the gel coating process and requirements for fiberglass reinforced plastic (FRP) exterior body panels that will not be finish painted. Typical parts are body side panels, cab rear, fascia, roofs and similar exterior parts. 2.0 SCOPE Thi
5、s specification covers surface appearance and dry film properties of gel coat, inspection, quality control and source approval for coated FRP parts prior to shipment to Navistar. It also includes repair of gel coated surfaces and handling of gel coated parts. 2.1 Restricted Chemical Substances Effec
6、tive January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification. 3.0 REFERENCE DOCUMENTS Unless otherwise specified the latest issue of all referenced standards shall apply. The following Specifications, Standards
7、, and Regulations are referenced in this specification. ISO 9001/TS 16949 Quality Management Systems- Requirements CFR Title 29, Part 1910 Occupational Health and Safety Standards NAVISTAR ISQ-001-QM Integrated Suppler Quality Requirements NAVISTAR D-13 Supplier Packing and Shipping Standard. NAVIST
8、AR MPAPS B-50 Restricted Chemical Substances NAVISTAR MPAPS G-9012 - IMC Properties for SMC Parts NAVISTAR MPAPS GT-Paint-5A - Adhesion of Paint NAVISTAR MPAPS GT-Paint-5C - Accelerated Adhesion of Paint NAVISTAR MPAPS GT-Paint-7G - Distilled Water Immersion Test For Paint NAVISTAR MPAPS GT-Paint-4D
9、 - Hardness of Paint NAVISTAR MPAPS GT-Paint-6B - Initial Gloss of Paint NAVISTAR MPAPS GT-Paint-7E - Humidity Test For Paint NAVISTAR MPAPS GT-Paint-14A - Solvent Rubbing Test NUMBER: MPAPS G-9017 TITLE: Gel Coat Properties for Exterior Panels REVISION: 1802 This document is restricted and may not
10、be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2018 by Navistar, Inc. FEBRUARY 2018 Page 2 of 5 NAVISTAR CEMS GT- Paint-28 - Maximum Allowable Paint Chipping Damage NAVISTAR MPAPS D-22 - Fiber
11、 Glass Reinforced Polymer Materials NAVISTAR MPAPS G-9008 - Painting Plastic - Interior and Exterior ASTM D 4138 - Standard Practices for Measurement of Dry Film Thickness of Protective Coating Systems by Destructive, Cross-Sectioning Means SAE J400 - Test for Chip Resistance of Surface Coatings 4.0
12、 GENERAL REQUIREMENTS This specification is not intended to limit or specify the exact process and materials to be used in providing FRP parts ready for installation at Navistar assembly operations. The control of the gel coat quality and its application shall be the responsibility of the FRP part s
13、upplier. All gel coated parts supplied must be compatible with the assembly operations employed by the using Navistar facility. 4.1 Acceptance Criteria for Gel Coated Parts It is the responsibility of the supplier to ensure, prior to shipment to the using Navistar facility, that all gel coated parts
14、 are completely free of visible porosity and other defects, which would cause significant in-house rework. This will require close cooperation between the supplier and the using facility and Materials Engineering. Very minor instances of porosity or fiber read through shall not be considered rejecta
15、ble. Chronic cases of these defects shall be considered a reject condition. Consult Table I for breakdown of acceptable and unacceptable conditions. It will be the responsibility of the supplier to correct any of these conditions. 4.2 Performance Requirements 4.2.1 Appearance Parts requiring gel coa
16、t as its primary exterior coating shall be classified as Zone A, B or C. Zone A shall mean the part is a primary, exterior, glamour surface, which requires the highest cosmetic standards and fewest defects. Examples of such parts are roof exteriors, cab rear doors and cab rear panels. Zone B is a mo
17、derately visible surface which can have some defects not permitted in Zone A but still requires high cosmetic standards. Examples of these parts are fender lower surfaces, bumper vertical lips, roof top rear, and underside of steps and air takes. Zone C is the lowest visible part that can have certa
18、in defects in defined quantities. Examples are body panels that are hidden, floor undersides. See Table I for breakdown of Zone requirements. 4.2.2 Dry Film Requirements Dry film properties are given in Table II. The requirements apply to the gel coat as processed in the mold after cure and part coo
19、l down. 4.2.3 Inspection Parts shall be inspected as follows: Zone A at eye level, 12-24” distance from 2-foot height to roof sides and rear panels; Zone B at 24-48” distance below 2-foot height for sides and rear; Zone C at 48-96”. NUMBER: MPAPS G-9017 TITLE: Gel Coat Properties for Exterior Panels
20、 REVISION: 1802 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. 2018 by Navistar, Inc. FEBRUARY 2018 Page 3 of 5 5.0 QUALITY Parts supplied shall be clea
21、n and free of dirt, oils, molding flash, sharp edges or other defects harmful of product performance. Parts shall be adherent and uniform in color and texture, with no thin spots, runs, wrinkles, porosity, pits or blisters. 6.0 SOURCE APPROVAL AND QUALITY CONTROL 6.1 Supplier Requirements All suppli
22、ers to NAVISTAR are subject to the requirements defined in ISQ-001-QM- NAVISTAR Integrated Supplier Quality Requirements. Suppliers must be compliant with ISO 9001 or TS 16949 and fulfill all AIAG PPAP (Production Part Approval Process) documentation and all approval requirements as indicated in NAV
23、ISTAR ISQ-001-QM. 6.2 Approval Parts supplied against contracts or purchase orders citing this specification shall be equivalent in all respects to those samples which were approved by the purchaser. No changes in formulation or processing practices are permitted without approval. In the event that
24、changes in material, properties, processing practices, construction, color, or labeling of the product are required, the supplier shall notify NAVISTAR Integrated Supplier Quality (ISQ) of the proposed change(s) by contacting their Navistar Supplier Quality representative or sending an email to ISQ.
25、 Test data indicating conformance to all requirements of this specification, test samples, and new or amended or updated SDS Safety Data Sheet(s) (formerly MSDS) in accordance with CFR Title 29, Part 1910, shall be submitted with the request for change. 6.3 Process Control The supplier shall either
26、perform and report results of tests on specific lots of parts produced using ISO 9001 or TS-16949 guidelines, or provide statistical evidence of the lot having been produced in a state of statistical control and with a process capable of providing all required properties. The part supplier, Material
27、s Engineering and/or the quality control manager of the using plant may determine testing and reporting requirements on specific products. 7.0 SHIPPING, PACKING AND IDENTIFICATION Shipping, packing and identification shall be in accordance with NAVISTAR Supplier Packing and Shipping Standard D-13. P
28、arts shall be packaged and shipped in such a manner so as to protect the surface finish in transit. 8.0 DESIGNATION ON DRAWINGS Example: Gel coat per MPAPS G-90179.0 TECHNICAL INFORMATION For further information related to the technical content of this specification, contact: Suppliers may purchase
29、controlled copies of this specification by contacting: Materials Engineering and Technology Dept. Truck Development and Technology Center 2911 Meyer Road Fort Wayne, IN 46803 E-mail: MaterialsEngineeringN IHS Markit Inc. 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: Aut
30、omotiveIHS.com Website: http:/ NUMBER: MPAPS G-9017 TITLE: Gel Coat Properties for Exterior Panels REVISION: 1802 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 li
31、ability. 2018 by Navistar, Inc. FEBRUARY 2018 Page 4 of 5 TABLE 1. APPEARANCE REQUIREMENTS Item Appearance Attribute Description Measurement State Condition Max. acceptable size / count per part*. Separated by 100mm Zone A Zone B Zone C 1 Boiling / pinholes / popping Small bubbles in coating which m
32、ay have small holes at top Visual evaluation Finish None Up to 3 2mm dia. Acceptable 2 Chips Removal of coating from underlying coating or substrate in small irregular pieces Visual evaluation Finish No color change None 1 per surface 1mm dia., no closer than 200mm Acceptable 3 Cracked part Cracks /
33、 split / puncture in substrate or gel coat Visual evaluation Finish None None None 4 Contamination Foreign object or containment in coating film Visual evaluation Finish Same color Up to 4 per part 1mm separated by 100mm Up to 5 per part 1mm Acceptable 5 Gloss Shininess of coated surface Gloss meter
34、 / Master Plaque Finish 85 85 N/A 6 Mottle Blotchy, non-uniform appearance Visual Evaluation Finish None Slight, uniform Acceptable 7 Off-color Variation in color within a surface Visual evaluation Finish None Acceptable Acceptable 8 Orange peel Rough or wavy appearance of coating surface resembling
35、 the skin of an orange Visual comparison to sample plaques Finish Sample 8B Sample 8C Sample 8D 9 Peeling Loss of adhesion between coating films or between coating and substrate Visual evaluation Finish None None None 10 Pits / porosity Small holes in the coating surface Visual evaluation Finish Sam
36、e color 2 per part 2mm dia. 3 per part 3mm dia. Acceptable 11 Poor repair Inferior coating appearance due to improper coating repair techniques Visual evaluation Finish None None Acceptable 12 See through Area of coating surface where film is missing or thin, exposing the underlying surface Visual e
37、valuation Finish None None None 13 Scratches after coating Scratches on coated surface caused by improper handling, etc. Visual evaluation Finish Seen, or felt with the finger nail None 12mm long Acceptable 14 Glass fiber mat pattern read through The glass fiber mat pattern is visible through the co
38、ated surface Compare to master sample Finish Sample 14B Sample 14C Sample 14D 15 Molding split lines Visible line created by tool split lines Visual evaluation Finish 0.25mm height Acceptable Acceptable 16 Master model block lines Block joint lines visible on A surface of part Visual evaluation Fini
39、sh None Acceptable Acceptable * Acceptable count per part, e.g. Body side, roof, bulkhead, etc. NUMBER: MPAPS G-9017 TITLE: Gel Coat Properties for Exterior Panels REVISION: 1802 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Te
40、chnical Standards. Suppliers are required to assume all patent liability. 2018 by Navistar, Inc. FEBRUARY 2018 Page 5 of 5 TABLE 2. DRY FILM PROPERTIES FILM PROPERTY REQUIREMENT Test Method Adhesion, % min. 90 MPAPS GT-Paint -5A Xylene Rub Pass MPAPS GT-Paint -14A Accelerated Adhesion, % min. 90 (3B
41、) MPAPS GT-Paint -5C Initial Gloss 85 min. MPAPS GT-Paint -6B 500 hours Humidity % adhesion min. 90 MPAPS GT-Paint -7E blisters None Gravelometer Test Requirement 2A per MPAPS GT-Paint -28 SAE J400 Distilled Water Immersion No blisters or color change MPAPS GT-Paint -7G Film Thickness, mils (min/max) 15.0/25.0 ASTM D 4138 REVISION HISTORY Revision Level Change Approved by Date Approved 1802 Converted to MPAPS R. Goluch 2/13/2018
