GMW GMW16700-2011 Wash-off Resistance Test for Adhesives and Sealers Issue 1 English《粘合剂和密封层的耐冲洗试验 第1次出版(英文版本)》.pdf
《GMW GMW16700-2011 Wash-off Resistance Test for Adhesives and Sealers Issue 1 English《粘合剂和密封层的耐冲洗试验 第1次出版(英文版本)》.pdf》由会员分享,可在线阅读,更多相关《GMW GMW16700-2011 Wash-off Resistance Test for Adhesives and Sealers Issue 1 English《粘合剂和密封层的耐冲洗试验 第1次出版(英文版本)》.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW16700 Wash-off Resistance Test for Adhesives and Sealers Copyright 2011 General Motors Company All Rights Reserved November 2011 Originating Department: North American Engineering Standards Page 1 of 6 1 Scope Note: Nothing in this standard superced
2、es applicable laws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. This test procedure is used to determine the wash-off resistance of adhesives, sealers and other materials that are processed through
3、 assembly plant cleaning, pre-treatment and electrocoat (ELPO) systems. 1.2 Foreword. Not applicable. 1.3 Applicability. This test procedure is intended for use with adhesives, sealers and other materials that are applied at the metal center or body shop, and are subsequently processed through clean
4、ing, pre-treatment and ELPO systems at the assembly plant. This procedure may be used for materials that are pumpable or pre-formed. Test materials are evaluated in the uncured or gelled condition, as applicable for the specific test material. Method A is an assembly plant test. Method B is a labora
5、tory test with direct spray impingement. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. GMW8 GMW15477 GMW14019 3 Resources 3.1 Facilities. 3.1.1 Method A: Plant Test. Facili
6、ties required for Method A only. 3.1.1.1 Induction Gelling System. Production. 3.1.1.2 Degreasing, Pre-treating and Electrocoating Baths. Production. 3.1.2 Method B: Lab Test with Direct Spray Impingement. No facilities required for Method B only. 3.2 Equipment. 3.2.1 Methods A and B. Equipment requ
7、ired for all methods. 3.2.1.1 Cartridge Gun. For pumpable materials. 3.2.1.2 Cartridge Nozzle. For pumpable materials with respective opening diameter. 3.2.1.3 Oven. For heating warm-applied pumpable materials prior to manual application. 3.2.1.4 Roller. For controlled wet-out of pre-formed material
8、s, especially constrained layer damper pads. Roller weight 2000 20 g, unless otherwise specified. 3.2.2 Method A: Plant Test. Additional equipment required for Method A only. 3.2.2.1 Body-in-White (BIW). 3.2.2.2 Panel Holder. Fixture for attaching test pieces to the BIW. Copyright General Motors Com
9、pany Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16700 Copyright 2011 General Motors Company All Rights Reserved November 2011 Page 2 of 6 3.2.3 Method B: Lab Test wi
10、th Direct Spray Impingement. Additional equipment required for Method B only. 3.2.3.1 Induction Gelling System. Production-representative. 3.2.3.2 Spray Nozzle. Sixty-five degree (65) V-fan nozzle with 20 L per minute at 3 bar. 3.2.3.3 Rubber Hose. With inner diameter (ID) approximately 10 mm. 3.2.3
11、.4 Tap Water Source. Capable of maintaining a temperature of 58 C. 3.2.3.5 Water Pressure Gauge. Units in bar. 3.2.3.6 Large Clips. Capable of holding test panels in place. 3.3 Test Vehicle/Test Piece. 3.3.1 Metal Panels. Substrates, lubricants and panel configuration shall be according to the relev
12、ant material specification or the responsible material engineer. If no substrates, lubricants or panel configurations are specified, use unconstrained (open-faced), hot-dipped galvanized (HDG) steel panels per GMW8 with minimum dimensions 100 mm x 250 mm. Oil panels according to GMW15477 with a chal
13、lenging GMW14019 lubricant. 3.3.2 Test Material. For Method A, apply the test material according to GMW15477, the relevant material specification, or the responsible material engineer. For Method B, apply the test material across the width of the panel, centered approximately 125 mm from either end
14、of the panel. 3.3.2.1 Pumpable Test Material. For Method A, bead dimensions according to GMW15477, the relevant material specification, or the responsible material engineer. For Method B, bead with dimensions: 13 mm wide x 7 mm high, unless otherwise specified. 3.3.2.2 Pre-formed Test Material. For
15、Method A, test material with dimensions according to GMW15477, the relevant material specification, or the responsible material engineer. For Method B, sample with dimensions: 20 mm wide x 100 mm long x 2 mm thick, unless otherwise specified. 3.3.3 Gelling. Testing shall be completed with uncured ma
16、terial. Test material shall be gelled when gelling is specified by the relevant material specification, the suppliers technical data sheet, or by the responsible material engineer. 3.3.3.1 Inductive Gelling. If inductive gelling is specified, the test material shall be applied directly to the test p
17、anel and inductively gelled. The production induction system is recommended to be used whenever possible. The temperature and temperature distribution of the induction system shall be verified to be operating within specifications prior to test piece preparation. 3.3.3.2 Two-Component Materials. Two
18、-component (2K) test materials shall be evaluated after handling stiffness has been achieved due to the 2K reaction. The period to reach handling stiffness shall be according to the relevant material specification, the suppliers technical data sheet or the responsible material engineer. 3.3.4 Aging.
19、 Test material shall be aged for a minimum of 2 h after application or after gelling, prior to testing. 3.3.5 Number of Test Pieces. Testing shall be completed with a minimum of one test piece per condition, unless otherwise specified. 3.4 Test Time. Method A Method B Calendar time: 1 day 1 day Test
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