1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16081 PVC, Interior, Integral Colored, Castable Liquid-Powder Flexible Skin Compounds Copyright 2012 General Motors Company All Rights Reserved February 2012 Originating Department: North American Engineering Standards Page 1 of 6 1 Scope 1.
2、1 Material Description. This specification covers the properties of an integrally colored, interior Polyvinyl Chloride (PVC) molding compound. These materials can be processed by extrusion and/or injection molding. Materials are delineated by “Type” in Table A1 indicating Shore hardness, “Grade” in
3、Table A2 indicating castable material form, liquid or powder and “Class” in Table A3 indicating plasticizer content, Thalate, Trimellitate or other. 1.2 Symbols. The material abbreviation according to ISO 11469 is PVC . 1.3 Typical Applications. Typical interior trim including console sides and door
4、 panels. 1.4 Remarks. PVC materials approved to this specification will be called out on the engineering drawing indicating all three attributes, e.g., GMW16081P-PVC, Type 2, Grade P, Class TR is an 80 5 Shore A hardness, castable powder PVC that contains Trimellitate plasticizer. In addition, if th
5、e nominal Shore hardness for the GM component is different than nominal “Type” stated, it shall be called out specifically on the engineering drawing, e.g., if Type 2 = 80 5 Shore A, but 82 nominal Shore A is being used, 82 X Shore A hardness shall be called out with Type 2. 2 References Note: Only
6、the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. AATCC23 ISO 188 ISO 3451-1 SAE J2412 ISO 34-1 ISO 527 ISO 3795 ISO 105-G02 ISO 868 ISO 11469 ISO 176 ISO 1183 SAE J323 2.2 GM Standards/Specifications. GMW3013 GMW3221 GMW3402 GMW14334 GMW
7、3059 GMW3232 GMW3417 GMW14651 GMW3205 GMW3235 GMW14162 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements Materials approved to this specification shall meet the requirements of GMW3013, General Requirements for Handling of Technical Terms
8、 of Delivery for Plastics. 3.1 Requirements on Delivery. Important physical, mechanical, and thermal properties that characterize the material are summarized in Table A3. Note: For each product, the requirements to Table A3 shall be documented by Certification Statement according to GMW3013. The col
9、or and gloss shall be specified on drawings, in material specifications, and otherwise. 3.2 Requirements on Test Specimens. Tests shall be conducted using the latest issue of the test methods indicated. Suitable precautions should be taken to ensure that applicable safe limits are not exceeded when
10、conducting test procedures, processes, and/or handling the materials required by this specification. 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 S
11、TANDARDS GMW16081 Copyright 2012 General Motors Company All Rights Reserved February 2012 Page 2 of 6 3.2.1 Test specimens shall be die cut from molded plaques having a nominal thickness of 3.2 0.2 mm. If injection molded, die cut specimens are to be tested with the long axis of the test specimen pe
12、rpendicular to the direction of flow. Plaque dimensions must be sufficient to permit this. 3.2.2 Test samples shall be aged a minimum of 40 h after molding and 24 h immediately following a conditioning period per GMW3221, Code A, unless otherwise specified. All tests shall be performed on unannealed
13、 specimens. In addition, tests specified at temperatures below or above 22 C 3 C shall be conducted at the specified temperature using specimens conditioned at the specified temperature for 4 h minimum. 3.2.3 The minimum values specified in the property tables must be met by test specimens in natura
14、l, black, or in a standard sampled color if natural or black are not available. For colored grades where other pigment and additive systems (e.g., stabilizer) are used, the impact values shall not decrease more than 10% from the specified minimum value. 3.3 Compound Properties. See Tables 1 and 2. A
15、 minimum of six lots shall be tested to Table 1, unless otherwise noted. The following are also required for full specification approval (the minimum number of lots per test required is one): Youngs Modulus Poissons Ratio Coefficient of Linear Thermal Expansion (CLTE) Stress-Strain at 23 C, 85 C, an
16、d -30 C Suppliers must demonstrate ability to meet integrally colored compound requirements (Table 2) with an appropriate palette of GM visually approved colors (i.e., red, tan, blue, gray) prior to approval of either base compound or colored compounds. 3.3.1 Accelerated Weathering Resistance. Expos
17、e to 1240 kJ/m2 per SAE J2412 or 19 MJ/m2 per GMW14162 Cycle C and 115 C. Testing is completed using a control retain. Test samples or parts may be used for exposure at the discretion and approval of GM Engineering. 3.3.1.1 Evaluation. Unless otherwise specified, inspect a minimum of mid and full ex
18、posed test samples for gloss and color change. Measure test samples before and after exposure per GMW3417. Table 1: Compound Properties (Integrally Colored) Note 1 Property Test Method Unit Type 1 Type 2 Shore Hardness ISO 868, 15-second delay A 70 5 80 5 Density ISO 1183 g/cm3 1.10 to 1.30 1.10 to
19、1.30 Tensile Stress at Break ISO 527, Type 1A dumbbell, 500 mm/minute MPa 9.0 9.0 Elongation at Break ISO 527, Type 1A dumbbell, 500 mm/minute % 250 250 Tear Strength ISO 34-1, Method B, angle die, 500 mm/minute kN/m 25 25 Filler Content ISO 3451-1, Method A % 0 to 20 0 to 20 Volatile Loss ISO 176 %
20、 3.0 3.0 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 GMW16081 Copyright 2012 General Motors Company All Rights Reserved February 2012 Pa
21、ge 3 of 6 Property Test Method Unit Type 1 Type 2 Cold Flexibility Mandrel Test SAE J323, Method A. Use Table 2 for mandrel size selection based upon hardness. 3.2 mm 0.2 mm sample thickness. No Cracks Properties After Heat Age Exposure ISO 188 Method B. 168 h at 105 C followed by indicated property
22、 testing. % 25% maximum of materials properties, Hardness, Tensile Stress at Break and Elongation at Break. Note: Perform indicated property testing at 22 C 3 C. Flammability GMW3232 OR ISO 3795 (Report values according to GMW3232 mm/minute 100 Fogging GMW3235-B-T2 condensable constituents mg 2 Chem
23、ical Resistance GMW14334-A No units Rating 1 Odor GMW3205 Dry Condition Rating 6 Note 1: Properties shown are guidelines for each type material. Nominal values are defined in the material certification submission package at the time of approval. Table 2: Compound Properties (Integrally Colored) Note
24、 1 Property Test Method Unit Type 1 Type 2 Flammability GMW3232 OR ISO 3795 (Report values according to GMW3232 mm/minute 100 Soil and Cleaner Resistance GMW3402 Procedure A. Test all soiling agents except for codes E, K, and L. Apply soiling agent. Allow soiling agent to set for 30 minutes at stand
25、ard conditions; then clean soiling agent using cleaner 0 within 20 minutes. If soil does not remove, immediately use cleaner 2. mm/minute Rating 8, no ring formation or haptic change allowed Fogging GMW3235-B-T2 condensable constituents mg 2 Colorfastness to Burnt Gas (Propane) AATCC23 or ISO 105-G0
26、2, 168 hours at 60C, specimen color: light gray or light beige E YI E 1.5 YI 2.0 Accelerated Weathering Resistance for Interior Trim/Materials Expose to 1240 kJ/m2 per SAE J2412 or 19 MJ/m2 per GMW14162 Cycle C and115 C E E 3.0 80% gloss retention required. No objectionable defects allowed. Natural
27、Weathering Exposure Test for Interior Trims/Materials 105K TNR Langleys per GMW3417 L1-F2-G1-T5 E E 3.0 80% gloss retention required. No objectionable defects allowed. Note 1: Properties shown are guidelines for each type material. Nominal values are defined in the material certification submission
28、package at the time of approval. TNR = Total Normalized Radiation. 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 GMW16081 Copyright 2012 G
29、eneral Motors Company All Rights Reserved February 2012 Page 4 of 6 Table 3: Mandrel Size Selection Chart Hardness (Mandrel Size) Hardness (Mandrel Size) 50 to 70 Shore A (6 mm) 37 to 45 Shore D (25 mm) 75 to 95 Shore A (12 mm) 50 to 80 Shore D (50 mm) 3.4 Performance Requirements. 3.4.1 Part Perfor
30、mance GMW14651. Parts made from interior materials approved to this specification must meet the performance requirements of GMW14651. 4 Manufacturing Process See Table A2. 5 Rules and Regulations 5.1 Legal Regulations. All materials must satisfy applicable laws, rules, regulations and recommendation
31、s 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 shall be tested for conformity with
32、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 manufacture, etc. If not otherwise agreed,
33、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 processes and to apply for a new rele
34、ase. 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 and the supplier. 5.4 Initial Source
35、 Approval. No shipments shall be made by any supplier until representative initial production samples have been approved by the appropriate Materials Engineering department(s) as meeting the requirements of this specification. 5.5 Material Safety Data Sheets/Safety Data Sheets (MSDS/SDS). For new pr
36、oduct 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 Globally Harmonized System of Classification and Labeling of Chemicals (GHS) requirements or o
37、ther 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 documents where available. 5.6 All materials supplied to this standard must comply with the r
38、equirements of GMW3059, Restricted and Reportable Substances for Parts. 6 Approved Sources Engineering qualifications of an approved source are required for this standard. Only sources listed in the GM Materials File, i.e., MATSPC, under this standard number have been qualified by Engineering as mee
39、ting the requirements of this standard. For other GM locations, the responsible Engineering group should be contacted to obtain the approved source in that individual country. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or n
40、etworking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16081 Copyright 2012 General Motors Company All Rights Reserved February 2012 Page 5 of 6 7 Notes 7.1 Glossary. MATSPC: Global repository of GM approved materials for corresponding GM Engineering Standards. 7.2 Ac
41、ronyms, Abbreviations, and Symbols. CLTE Coefficient of Linear Thermal Expansion DSC Differential Scanning Calorimetry GHS Globally Harmonized System IR Infrared MSDS Material Safety Data Sheet PVC Polyvinyl Chloride SDS Safety Data Sheet TGA Thermogravimetric Analysis Curve TNR Total Normalized Rad
42、iation TSP Test Sampling Plan 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW16081P-PVC Type X, Grade X, Class X Where: GMW = GM Worldwide Specification 16081 = Sequential Number P = Plastic PVC = Polyvinyl Chloride Type X = 1 to 2 a
43、s defined in Table A1 Grade = L or P as defined in Table A2 Class = TH, TR or O as defined in Table A3 9 Release and Revisions This standard was originated in September 2008. It was first approved by the Global Plastics Team in November 2008. It was first published in December 2008. Issue Publicatio
44、n Date Description (Organization) 1 DEC 2008 Initial publication. 2 FEB 2012 Added Table 2 for colored resins, spec reorganization, added odor test. (Plastics GSSLT) Cross-Reference of Replaced Specifications GMW16081P-PVC Specification Replaced Type 1, Grade L GMP.PVC.038 Type 2, Grade P GMP.PVC.04
45、2 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 GMW16081 Copyright 2012 General Motors Company All Rights Reserved February 2012 Page 6 of
46、 6 Appendix A Table A1: Hardness Type Shore Hardness (Shore A) 1 70 5 2 80 5 Table A2: Castable Material Form Grade Castable Form L Liquid P Powder Table A3: Plasticizer Class Plasticizer Content TH Thalate TR Trimellitate O Other Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
