NAVISTAR MPAPS D-7124-2016 Interior Structural Foam RIM.pdf
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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. OCTOBER 2016 Page 1 of 6 NAVISTAR, INC. Material, Parts, and Process Specificatio
2、ns (MPAPS) NUMBER: MPAPS D-7124 Former Designation: TMS-7124 TITLE: Interior Structural Foam RIM CURRENT REV No.: 1610 DATE: Oct. 2016 WRITTEN/EDITED BY: D. Baker APPROVED BY: R. Goluch SUPERSEDES: Rev. 0908 August 2009 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This speci
3、fication 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 pri
4、or to use. 1.0 APPLICATION This specification covers rigid interior cab composite components, such as cabinets, shelves, instrument panels, and dash panels. The composite consists of a reaction injection molded (RIM) foam, that may include a molded with a preformed vinyl cosmetic surface. 2.0 SCOPE
5、This specification covers the general requirements and the property and performance requirements for the finished composite. Requirements for quality, quality control and source approval are included. 2.1 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requireme
6、nts 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 standards, specifications and regulations are referenced in this specification. Qua
7、lity System Standard ISO 9001 or TS-16949 ASTM D 638 MPAPS B-50 CFR Title 29, Part 1910 ASTM D 732 MPAPS D-7121 FMVSS 302 ASTM D 790 MPAPS P-9544 MPAPS DT-12 ASTM D 1622 MPAPS K-6900 MPAPS P-9543 ASTM D 1621 MPAPS GT-31 MPAPS D-7028 AATCC proc. 1 NAVISTAR Supplier Packing and Shipping Standard D-13
8、4.0 GENERAL REQUIREMENTS 4.1 Vinyl Facing The vinyl covering, when specified, shall meet the requirements of MPAPS D-7121 (Type A or B, as indicated on the engineering print) and the color and texture requirements listed on the engineering print. Other types of facing material require qualification
9、and shall not be used without written approval of Navistar Materials Engineering. NUMBER: MPAPS D-7124 TITLE: Interior Structural Foam RIM REVISION: 1610 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppli
10、ers are required to assume all patent liability. 2016 by Navistar, Inc. OCTOBER 2016 Page 2 of 6 4.2 Rigid Foam This specification includes two (2) types of rigid foam with two different grades available for each based on density and material properties. Type I is an unreinforced, two (2) component
11、urethane, reaction injection molded structural foam. Type II is similar except it is glass reinforced and includes two (2) grades with different glass content and density. The selection of the Type and Grade shall be made by Materials Engineering. 4.2.1 The rigid foam shall be a two component uretha
12、ne, reaction injection molded behind the vinyl facing. Any remaining mold release residue must be compatible with Navistar paint repair systems and must have prior approval of Materials Engineering. 4.3 Finished Part Colors, textures, and finishes shall be called out within the material specificatio
13、n on the part drawing and shall match the approved standard samples in the files of the Navistar Industrial Design Department. 4.3.1 Finished part weight may not vary more than 10% from the approved sample. 4.4 Property And Performance Requirements 4.4.1 Rigid Foam The material properties of the foa
14、m are dependent on the density. When foam density varies outside the nominal limits, due to part and tool design, physical properties may also vary. Areas on the part where density varies beyond the nominal limits shall be indicated on the part drawing, and preproduction qualification testing is req
15、uired. See Table 1 for the required physical properties. 4.4.2 Adhesion 4.4.2.1 Vinyl: The vinyl to rigid foam bond shall meet the requirements of MPAPS D-7028, Bonded Interior Trim Products. Production parts shall be used for testing adhesion. 4.4.2.2 Metal Inserts: Metal inserts shall be molded or
16、 bonded in place such that any attempt to remove the insert results in foam failure. Structural components shall meet MPAPS K-6900 for bonding appropriately modified for the application (Interior components would be limited 50C for hot pulls, 70C heat aging, and humidity in place of salt spray). Ple
17、ase contact Materials Engineering for further guidance. 4.4.3 Heat Age Heat age parts for 168 hours at 70 C (158 F). 4.4.3.1 Required Parts shall meet the physical properties, as listed in Table 1, and the adhesion requirements after aging. 4.4.4 Accelerated Weathering 4.4.4.1 Method: Interior cycle
18、 per MPAPS GT-31. The exposure energy for the UV requirement should be called out in a “Z” Note and expressed in kJ/m. 4.4.4.2 Required: There shall be no signs of color alteration greater than a E of 3, plasticizer migration, decreased pliability or tackiness after exposure. Min rating of 3.0 per A
19、ATCC Eval.-Procedure 1. 4.4.5 Colorfastness to Cleaning and Chemicals 4.4.5.1 Method: MPAPS DT-12, Method A. 4.4.5.2 Required: A minimum rating of 4 per the AATCC color transference scale. NUMBER: MPAPS D-7124 TITLE: Interior Structural Foam RIM REVISION: 1610 This document is restricted and may not
20、 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. OCTOBER 2016 Page 3 of 6 4.4.6 Flammability Requirements The finished composite must conform to and be certified to meet
21、all requirements of FMVSS-302, Flammability of Interior Materials and all requirements of MPAPS P-9544. Components of the composite which are not 100% bonded together shall be tested separately and each component must demonstrate required flammability resistance. Components of the composite which ar
22、e 100% bonded together are not specifically required to demonstrate flammability resistance when tested as individual parts, however, the bonded (finished) composite must demonstrate required flammability resistance. TABLE 1 PHYSICAL PROPERTY REQUIREMENTS PROPERTY min or max value unless shown as a
23、range UNITS TEST METHOD TYPE I (Unreinforced) TYPE II (Reinforced) GRADE A GRADE B GRADE A GRADE B Nominal Foam Density, 10% lb/ft kg/m ASTM D 1622 21 336 24.5 35 561 35 560 Glass Plies, min 0 0 (1) (1) Glass/Filler Content, min 5% % MPAPS DT-8 0 0 15 10 Density Test2 Limits, max lb/ft kg/m ASTM D 1
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