1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16005 Adhesion Requirements for Modular, Encapsulated Glass Assemblies Copyright 2013 General Motors Company All Rights Reserved May 2013 Page 1 of 5 1 Scope 1.1 Material Description. This specification is intended to cover the adhesion perf
2、ormance for the encapsulation material (Polyvinyl Chloride (PVC), Reaction Injection Molded (RIM), Ethylene Propylene Diene (EPDM), Thermoplastic Elastomer (TPE), etc.) to glass in a modular glass assembly. 1.1.1 Part testing is to be accomplished in both of the two methods discussed in this standar
3、d. 1.2 Symbols. Not applicable. 1.3 Typical Applications. Applications subject to this performance requirement are fixed encapsulated glass such as automotive quarter (side) glass. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards
4、/Specifications. ISO 188 2.2 GM Standards/Specifications. GMW3059 GMW3368 GMW14729 GMW3221 GMW14124 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements 3.1 Requirements on Test Specimens. Reference GMW3221. 3.1.1 Sample Conditioning. All sa
5、mples are to be conditioned prior to each requirement test to GMW3221, Code A. 3.2 Test Samples. Production intent parts shall be used to verify capability of the intended part materials and process. 3.2.1 A total of 25 modular glass assemblies, five (5) per environment, shall be used for each test
6、performed. Pull Off Test and/or Quick Knife Adhesion (QKA) Test. 3.3 Equipment. 3.3.1 Universal tensile testing machine capable of maintaining a jaw separation rate of 10 mm/minute 0.1 mm/minute and indicating a load of at least 2000 N. The indicated load shall have a variance not to exceed 1% of fu
7、ll scale. 3.3.2 Clamping fixture as described in Figure 1. 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 ENGINEERING STANDARDS GMW16005 Copyright 2013 General M
8、otors Company All Rights Reserved May 2013 Page 2 of 5 Figure 1: Sample Preparation 3.3.3 Conditioning chamber/equipment capable of maintaining the environments described in 3.4.3. 3.3.4 Protective (heat resistant) gloves for handling environment exposed parts. 3.4 Physical Requirements. 3.4.1 Pull
9、Off Test. A 50 mm length of the encapsulation material shall be isolated from the surrounding encapsulation by cutting through the molding material to the glass surface. See Figure 1. 3.4.1.1 Specimen shall be clamped in pull fixture. See Figure 2. 3.4.1.2 Tensile test machine shall be set for a jaw
10、 separation of 10 mm/minute. 3.4.1.3 Maximum load at break, and the mode of failure, shall be recorded. 3.4.1.4 Requirement. The bond between the encapsulation material and the glass shall exceed 890 N when tested per this method. In addition to the minimum load, the resulting separation mode of the
11、 system shall be cohesive within either the encapsulation material and/or the adhesive system. These requirements shall be maintained after exposure to the test environments described in 3.4.3 after 1 h recovery at room temperature. The recovery temperature is to be recorded at the time of test. 361
12、 1-0 02( 06/ 02)50 mmCut s th roug h do wnto th e g lassCopyright 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 GMW16005 Copyright 2013 General Moto
13、rs Company All Rights Reserved May 2013 Page 3 of 5 Figure 2: Pull Fixture 3.4.2 Modified Quick Knife Adhesion Test, GMW3368. Production parts shall be used to verify capability of the intended part materials and process for this method. 3.4.2.1 Isolate a flat, planar section of the encapsulating ma
14、terial from the rest of the encapsulation by cutting through the material 90 degrees to the plane of the glass. Cut down to the glass from the planar cut lengthwise along the glass edge for a minimum of 150 mm. Treat this isolated section of the encapsulated material as the adhesive bead mentioned i
15、n the test procedure section of GMW3368. Report the separation mode between the layers and amounts by percentage. 3.4.2.2 Requirement. When encapsulated assemblies are tested according to the modified GMW3368 procedure, the resulting separation mode of the encapsulation material and/or the adhesive
16、system shall be cohesive within either or both of those layers. This cohesive separation mode shall be maintained after exposure to the test environments described in 3.4.3 after 1 h aging at room temperature to be recorded at the time of test. Note: Quick Knife Adhesion may not be applicable to Rea
17、ction Injection Molded (RIM) encapsulation. Deviations with other methods such as 180 degree peel may be used, but must be agreed to by the responsible GM Engineering Group prior to the onset of testing. 3.4.3 Exposures. A sample set shall consist of a minimum of five (5) specimens. One (1) sample s
18、et each, shall be conditioned at each of the following: As received. 14 days heat age at 80 C per ISO 188 Method B. Seven (7) days humidity per GMW14729. Eight (8) cycles per GMW14124, Cycle C. 3.4.3.1 Requirement for Heat Exposed Quick Knife Adhesion Testing, No Recovery. All procedures and require
19、ments from 3.4.2, Modified Quick Knife Adhesion Test, apply except subject parts shall be tested with no recovery period after heat age exposure. Expose parts to 4 h at 85 C per ISO 188 and test as described. Copyright General Motors Company Provided by IHS under license with General Motors CompanyN
20、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16005 Copyright 2013 General Motors Company All Rights Reserved May 2013 Page 4 of 5 3.5 Report Description. Separation modes shall be described as percent (%) cohesive and/or perc
21、ent (%) adhesive. Indicate the layer(s) pertaining to the particular separation mode. 4 Manufacturing Process This procedure must be repeated for each bonding system under consideration for the application. 5 Rules and Regulations 5.1 Legal Regulations. All materials must satisfy applicable laws, ru
22、les, 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. 5.3 Inspection and Rejection. Samples of components or materials released to a GM material specification s
23、hall 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.g., properties, manufacturing process, location of manufact
24、ure, 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 include documentation of all modifications of materials and/or pr
25、ocesses 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 agreed to between the responsible Engineering department a
26、nd 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/Safety Data Sheet must be submitted in compliance with the Glob
27、ally 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 TMC003 Material Safety Data Sheet/Safety Data Sheet guidance doc
28、uments 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 General Motors. The appropriate GM Materials Engineering d
29、epartment(s) must confirm material as meeting the requirements of this specification. Any test data sheets of material submitted to General Motors for such confirmation (e.g., during Production Part Approval Process (PPAP) under this material specification must list all properties and must apply cor
30、responding test methods of this material specification. 7 Notes 7.1 Glossary. Adhesive: Clean separation between the bonded layers. Cohesive: No separation within the bonded material layers. The bonded layers act as a single system when tested by QKA. MATSPC: Global repository of GM approved materia
31、ls for corresponding GM Engineering Standards. 7.2 Acronyms, Abbreviations, and Symbols. EPDM Ethylene propylene diene GHS Globally Harmonized System of Classification and Labeling of Chemicals MSDS Material Safety Data Sheet Copyright General Motors Company Provided by IHS under license with Genera
32、l Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16005 Copyright 2013 General Motors Company All Rights Reserved May 2013 Page 5 of 5 PPAP Production Part Approval Process PVC Polyvinyl chloride QKA Quick Knife A
33、dhesion RIM Reaction injection molded SDS Safety Data Sheet TPE Thermoplastic elastomer 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW16005 9 Release and Revisions This standard was originated in July 2008. It was first approved by
34、the GM Global Adhesive Team in September 2008. It was first published in September 2008. Issue Publication Date Description (Organization) 1 SEP 2008 Initial publication. 2 MAY 2013 Refresh. (Adhesives Global Subsystem Leadership Team) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
