1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW15065 Polyurethane Foam for Back Foaming Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 1 of 9 1 Scope 1.1 Material Description. Elastic two component system for the manufacturing of open cell, half rigid polyure
2、thane (PUR) foam. 1.1.1 Description of System. A-Component: Polyol component ready for processing in which the ageing and hydrolysis stabilizer is totally dissolved with amine free activators and foaming agent. B-Component: Diphenylmethandiisocyanate (MDI) and higher condensed isocyanates. 1.2 Symbo
3、ls. Not applicable. 1.3 Typical Applications. For back foaming of deep drawn foils, e.g., instrument panel. 1.3.1 Type 1. Type 1 has a defined density of 125 15 kg/m. 1.3.2 Type 2. For Type 2, the density is specified per approved material on the engineering drawing/in the math data. The density sha
4、ll not deviate more than 5% from the originally approved material. 1.4 Remarks. Not applicable. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM 925D FMVSS 302 ISO 1798 ISO 3386-1 ASTM D3574-J ISO 105-A02 ISO
5、 1856-A ISO 8067 CMVSS 302 ISO 845 ISO 1923 2.2 GM Standards/Specifications. GMW3059 GMW3232 GMW4659 GMW14357 GMW3205 GMW3235 GMW6992 GMW14363 GMW3221 GMW3259 GMW8081 GMW15634 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements 3.1 General.
6、 The components manufactured from this foam must be homogeneous with regard to their foam structure, cell size, mechanical properties and surface condition. 3.1.1 The components shall be free from cracks, hard areas, blisters, unfoamed areas (voids) and other defects which could adversely affect the
7、 serviceability. 3.1.2 Foam reinforcement shall be securely bound to the foam and shall show no voids or cracks around them. Over the cross section, the foam shall show a uniform structure. 3.2 Test Piece and Number. If it is not possible to take test pieces from the part, then suitable plates shall
8、 be manufactured for the test (taken from equal manufacturing process, recipe of foam and density). The test piece shall be taken without skin and in rising direction of foam. 3.2.1 Aged Test Pieces. The foam is aged as a block (taken from equal manufacturing process, recipe of foam and density). Af
9、ter ageing, the test piece shall be taken from the aged foam block without skin and in rising direction of the foam. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWI
10、DE ENGINEERING STANDARDS GMW15065 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 2 of 9 3.2.2 Test Piece for Indentation Hardness. The indentation hardness test piece shall be taken from a foam block with skin. The same foam block shall be tested as received and after ag
11、eing. 3.3. Conditioning. Immediately prior to test, all test pieces shall be pre dried at +70 C 3 C and conditioned. The pre-drying period shall be 16 h for tests conducted after humidity aging to ASTM D3574-J/GMW14357 and shall be 3 h for other tests. Following pre-drying, all test pieces shall be
12、conditioned to GMW3221, Code A. 3.4 Required Performance Values. All requirements listed in Table 1 shall be fulfilled by the delivered foam and shall be documented by the supplier in the Foam Certification Data Form (see Appendix A). 3.5 Basic Foam Physical Properties. All requirements listed in Ta
13、ble 2 shall be fulfilled by the delivered foam and shall be documented by the supplier in the Foam Certification Data Form (see Appendix A). Values indicated with “TBD” (To be Determined) shall be documented and may be noted on the drawing/in the math data for production quality check purposes. Valu
14、es indicated with “N/A” (Not Applicable) are not required. Documentation of additional properties may be required by the approving region. Table 1: Required Performance Values for Documentation Performance Test Method Specified Value Fogging GMW3235 Method B-Y1-T1 (gravimetric, 1 day pre-drying, +90
15、 C test temperature) 2 mg Flammability GMW3232 Must comply to FMVSS 302 and CMVSS 302 B maximum less than 100 mm/minute Interior Emissions GMW15634/GMW8081 (relative emission) 1.0 Resistance to Odor GMW3205 Wet condition (Code A) Rating 6 minimum Dry condition (Code B) Rating 6 minimum Steam Autocla
16、v PUR Foam-Polyether: 5 h, +120 C 3 C GMW14357 (ASTM D3574-J2 or GMW14357) No visible degradation, specified values per Table 2 PUR-Foam Polyester: 3 h, +105 C 3 C GMW14357 (ASTM D3574-J1 or GMW14357) No visible degradation, specified values per Table 2 Mildew GMW3259 No mildew. Compatibility Note 1
17、 GMW4659 or ASTM 925D, Method A, as specified by Materials Engineer Color Stability of the Cover Layer Color Change Shade Change (if cover layer is leather or plastic roll goods only) Visual Evaluation to GMW6992: No color change, slight darkening permissible. Grayscale to ISO 105-A02 Rating 3 Other
18、 Changes No adverse changes of shape, surface as the physical and chemical properties Note 1: Foam shall meet compatibility in the production intended composite. The test pieces shall be sewn or welded (dependent on use), using production techniques, to all possible combinations of composite materia
19、ls taken at the same time from production to form a test pack. Note, for any changes in the quality of any of the composite materials, compatibility tests shall be repeated. At the discretion of the approving GM Engineer, foam material may be tested to standard composite materials for initial foam a
20、pproval, e.g., a standard vinyl. Nevertheless, final foam approval shall be achieved in the production intended composite. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM W
21、ORLDWIDE ENGINEERING STANDARDS GMW15065 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 3 of 9 Table 2: Basic Foam Physical Properties Property Test Method Unit Type 1 2 Density ISO 845 Note 1 kg/m 125 15 Report Tensile Strength ISO 1798 kPa As-received condition 400 82 A
22、fter Heat Ageing, 500 h at +120 C 360 82 After Steam Autoclav (see Table 1) 320 Report Elongation ISO 1798 % As-received condition 80 50 After Heat Ageing, 500 h at +120 C 80 Report After Steam Autoclav (see Table 1) 80 Report Tear Strength ISO 8067 N m As-received condition 600 130 After Heat Agein
23、g, 500 h at +120 C 600 Report After Steam Autoclav (see Table 1) 600 Report Compression Force Deflection ISO 3386-1 Note 1 As-received condition kPa 50 5 Report Maximum Change after Heat Ageing, 500 h at +120 C % 30 Report Maximum Change after Steam Autoclav (see Table 1) % 50 50 Compression Set, 50
24、% ISO 1856-A % Report Report Indentation Hardness at Constant Force GMW14363 but preload 5 N, primary load 100 N As-received condition mm 9 1 Report Maximum Change after Heat Ageing, 500 h at +120 C % 30 Report Maximum Change after Steam Autoclav (see Table 1) % 50 Report Note 1: Determination of li
25、near dimensions per ISO 1923. But compressive force of foot is 500 Pa, 0.5 kPa 5% and a 50 0.1 mm diameter pressure. All readings should be taken after the pressure foot has been in contact with the material for at least 5 s. 4 Manufacturing Process Not applicable. 5 Rules and Regulations 5.1 Legal
26、Regulations. All materials must satisfy applicable laws, rules, regulations and recommendations valid in the country of usage. 5.2 Language. In the event of conflict between the English and domestic language, the English language shall take precedence. Copyright General Motors Company Provided by IH
27、S under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15065 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 4 of 9 5.3 Inspection and Rejection. Samples of compon
28、ents or materials released to a GM material specification shall be tested for conformity with the requirements of this material specification and approved by the responsible Engineering department prior to commencement of delivery of bulk supplies. A new approval must be received for any changes, e.
29、g., properties, manufacturing process, location of manufacture, etc. If not otherwise agreed, all testing and documentation normally required for initial release must be completed. It is the responsibility of the supplier to inform the customer in a timely manner, without solicitation, and to includ
30、e documentation of all modifications of materials and/or processes and to apply for a new release. If not otherwise agreed, all release tests shall be repeated and documented by the supplier prior to commencement of delivery of non-conforming bulk supplies. In individual cases, a shorter test can be
31、 agreed to between the responsible Engineering department and the supplier. 5.4 Material Safety Data Sheets/Safety Data Sheets (MSDS/SDS). For new product submissions, or when a change in chemical composition of an existing product has occurred, a complete copy of the Material Safety Data Sheet/Safe
32、ty Data Sheet must be submitted in compliance with the Globally Harmonized System of Classification and Labeling of Chemicals (GHS) requirements or other country-specific MSDS/SDS requirements. In addition, product MSDS/SDS submissions must be in compliance with specific country General Motors TMC00
33、3 Material Safety Data Sheet/Safety Data Sheet guidance documents where available. 5.5 All materials supplied to this standard must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 6 Approved Sources Materials supplied to this specification must be approved by
34、 General Motors. A list of approved materials can be found in MATSPC. This GM Material File is provided to third parties to reduce redundant testing of materials. If approved material already listed is used, the part supplier can use GM Material File reference for Production Part Approval Process (P
35、PAP) material approval. If the decision is made to use a not yet approved material, contact Materials Engineering for details on the approval process. The material approval process must be completed prior to PPAP start date of the part supplied to General Motors. 7 Notes 7.1 Glossary. MATSPC: Global
36、 repository of GM approved materials for corresponding GM Engineering Standards. 7.2 Acronyms, Abbreviations, and Symbols. GHS Globally Harmonized System of Classification and Labeling of Chemicals MDI Diphenylmethandiisocyanate MSDS Material Safety Data Sheet N/A Not Applicable (not required) No. N
37、umber PPAP Production Part Approval Process PUR Polyurethane SDS Safety Data Sheet TBD To be Determined 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW15065 Type 1, where Type 1 indicates the material type per paragraph 1.3.1. Copyri
38、ght General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15065 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 5 of 9 9 Rele
39、ase and Revisions This standard was originated in February 2006. It was first approved by the Global Foam Team in August 2006. It was first published in July 2007. Issue Publication Date Description (Organization) 1 JUL 2007 Initial publication. 2 JAN 2013 Five year refresh of standard. (Textiles &
40、Trim Materials Global Subsystem Leadership Team) Cross Reference of Replaced Specifications Note 1 GMW15065 Material Codes Replaced Specifications Type 1 TM 606100 (GME) TM 605000 (GME) Type 2 GM6084M (GMNA) Note 1: The material types of GMW15065 supercede all regional foam material specifications f
41、or use on global foam molded parts including, but not limited to, those listed in this Cross Reference table. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGI
42、NEERING STANDARDS GMW15065 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 6 of 9 Appendix A Data Sheet A1: Foam Certification Data Form Supplier: Date: Laboratory: Vendor Identification No: GM Foam Code: Lab No: GMW15065 Type: Batch No: PUR Foam based on: Polyether Polye
43、ster Manufacturing Location: Construction Verbal Description: SubmitSpecimenGMW15065 SPECIFICATION METHOD UNIT SPECIFIED VALUE RESULTS MeetsDoes NOT Meet COMMENTS Table 1 Fogging GMW3235 Method B-Y1-T1 (gravimetric, 1 day pre-drying, +90 C test temperature) mg 2 mg Table 1 Flammability GMW3232 - Mus
44、t comply to FMVSS 302 Table 1 Interior Emissions GMW15634/GMW8081 (relative emission) - 1.0 Table 1 Resistance to Odor GMW3205 - Table 1 Wet condition (Code A) Rating 6 Table 1 Dry condition (Code B) Rating 6 Copyright General Motors Company Provided by IHS under license with General Motors CompanyN
45、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15065 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 7 of 9 GMW15065 SPECIFICATION METHOD UNIT SPECIFIED VALUE RESULTS Submit SpecimenMeetsDoesNOT Meet
46、COMMENTS Table 1 Steam Autoclav PUR Foam Polyether: 5 h, +120 C 3 C GMW14357 (ASTM D3574-J2 or GMW14357) - No visible degradation PUR-Foam-Polyester: 3 h, +105 C 3 C GMW14357 (ASTM D3574-J1 or GMW14357) - No visible degradation Table 1 Mildew GMW3259 - No mildew. Table 1 Compatibility GMW4659 - Colo
47、r Stability of the Cover Layer Color Change Shade Change - No color change, slight darkening permissible Other Changes - No adverse changes of shape, surface as the physical and chemical properties Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for Resa
48、leNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15065 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 8 of 9 GMW15065 SPECIFICATION METHOD UNIT SPECIFIED VALUE RESULTS Submit SpecimenMeetsDoesNOT MeetCOMMENTS Table 2 Density ISO 845 kg/m Note 1 Table 2 Tensile Strength ISO 1798 - - As-received condition kPa Note 1 After Heat Ageing, 500 h at +120 C kPa Note 1 After Steam Autoclav (see Table 1) kPa
