1、 GMDAT ENGINEERING STANDARDS Material Specification Adhesives EDS-M-8622 Sealer-Expandable Mastic -PE GI *3D% 6d) Copyright 2010 General Motors Company All Rights Reserved November 2010 Originating Department: GMDAT Engineering Standards Page 1 of 12 Version : 3 1 Scope Note: Nothing in this standar
2、d supersedes applicable laws and regulations. Note: In the event of conflict between the Korean and English language, the Korean language shall take precedence. 1.1 Material Description. This specification specifies the general requirements of sealer-expandable mastic used for body line. 1.1.1 Mater
3、ial Types. One-component regular paste adhesive which is composed of synthetic resin base and additives such as vulcanization agent and blowing agent. . Medium Strength Type: 4 8 kgf/cm2 of adhesion strength . Low Strength Type: 1.5 2.5 kgf/cm2 of adhesion strength 1.1.2 General Descriptions. 1.1.2.
4、1 Heat-curing type, it provides perfect adhesion when baking conditions in the painting line are met. 1.1.2.2 As solvent-free type, it is free from danger of ignition. 1.1.2.3 Materials without electrical conductivity (ED-Off type) shall be used. 1.1.2.4 Materials should be good adhesion against gen
5、eral and galvanized steel treated with rust preventative oil. The Materials should not cause rust on the sealer-spread surface. 1.1.2.5 Materials should be easily treated, and they shall not give out hazardous odor and toxic fumes which may do damage to human bodies in case of sealer-spreading work
6、and drying work. 1.2 Symbols. Not applicable. 1.3 Typical Applications. This specification applies to sealer-expandable mastic used for plate reinforcement, adhesion and caulk between inner panel and outer panel at hood, trunk lid and door of automobile. 1.4 Remarks. Not applicable. 2 References Not
7、e: Only the latest approved standards are applicable unless otherwise specified. 1 P7 :0 : ., E:48 6Dh 1B* DD9IF$ . 3.3.3.3 4G 2e958t 4G D $*8 7( , .E8 -C 4G D08 -I* 1B* ?U9IF$ . 3.3.4 -PE 8 . Sealant 1 3 g8x :E(8x 6 8# 6*-,#DD7 : 20 mm 8 8GI8p) $E F7 GF947) )d:E8 :( (W3)8x ?U9IF :4 dE 4 68 (202) E8
8、 :*3L:E72P8 :( (W4 )8x ?U9IF$ . , G (165 5) E) 99I%P 9 7X/D7 C8F7 30 .8 8T:F$ . , $8 $448A !72P (202) E: -!F G )d:E72P8 :(0 :*3L:E72P8 :(8x ?U9IF$ . =95-G8 (%) 8t $8 47 B.F Failure of the test piece material / 4G D 8*8 Dh C.F Failure of specimen layer / 4*?i8 Dh 3.3.6 Tensile adhesive strength. 3.3.
9、6.1 Apply the sealer to the channel-shaped panel with (20 25) mm cross-section as shown in Figure 3, and mount the numbers of two spacers, size of 1 mm. Bond the panel of the same size onto it so that they fit neatly. 3.3.6.2 Cure it under the baking condition in Table 1, and expose it at room tempe
10、rature for 24 hours minimum, and then take it as a test piece. 3.3.6 889E=I$ . 3.3.6.1 ,* 3 0 M8 $+95 (20 25) mm 8 , .?F B &% $E 867 :88x :0# F8 666 F$ . 4.3 9486|9I2e . 84 -4.= E 8%P 1B) 30 E8F8 :1E8 6# 8272P 9P98).Bd $4 3P88 .(4F7 $ GEL G , ?I , ?i.* &%8 818 666 F$ . 5 ?0 9I 5.1 ., E:47 9P4%P +& 8
11、8t GMW3001 (8: 167 4F ?0 9I )8 9P* &d(6 F$ . 5.2 ., E:47 9P4%P +& .E&0 43B8t GMW3059 (8TF,p: 179P )8 9P* &d(6 F$ . 5.3 F3L , -d3L , I7 -*: + . GMDAT ENGINEERING STANDARDS EDS-M-8622 Copyright 2010 General Motors Company All Rights Reserved November 2010 Page 11 of 12 Version : 3 6 Approved Sources
12、 6.1 Material Approval. 6 38 6= 6.1 8* 38 . Part NO. Approved Supplier / 38 6= Approved Raw Material / 38 88* Remarks / /x 94545782 UNITECH / 8T#BA SEALER-EXPANDABLE MASTIC / -PE GI *3D% 6d) Medium Strength Type / :E9D$ Type 95999838 UNITECH / 8T#BA UDN-02 Low Strength Type 949D$ Type 6.2 Approval a
13、nd Quality Assurance Procedure. All raw material shall be approved and regularly inspected for its quality prior to and during mass production delivery according to approval and quality assurance procedure for chemical raw materials (Spec. no. EDS-M-0102). 7 Notes 7.1 Glossary. Not applicable. 7.2 A
14、cronyms, Abbreviations, and Symbols. Not applicable. 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: “EDS-M-8622” In case that this material is applied as part number. The coding system shall be indicated as follows. 6.2 38 -C E: .(:94 (G)8*4G D4 ).
15、3 NOV 2010 Divide the measuring conditions of viscosity into medium strength type and low strength type in Table 2. - Medium Strength Type: 0.5 rpm, #7 Spindle 20 E . - Low Strength Type: 2.0 rpm, #7 Spindle 20 E . Add the notes of appearance and viscosity. (Polymer/Organic Material Lab Team) / E 218 :EI$ -C 94I$ Type 9D$ ?U9I 98 . . - :EI$ Type: 0.5 rpm, #7 Spindle 20 E . - 94I$ Type: 2.0 rpm, #7 Spindle 20 E . E 218 74 (appearance) -C 9D$ (Viscosity) :02Q 4 (G)8*4G D4 ).
