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3、 ORDER; (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS http:/www.sae.orgCopyright 1994 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001RECOMMENDEDPRACTICESubmitted for recognition as an American National Sta
4、ndardJ1679ISSUEDAPR94Issued 1994-04PEEL STRENGTH OF SOFT TRIM ADHESIVESForewordThis Document has not changed other than to put it into the new SAE Technical Standards BoardFormat.1. ScopeThis SAE Recommended Practice shall be used to determine the peel strength achieved by anadhesive when used to bo
5、nd various decorative, flexible substrates such as cloth supported vinyl or carpet, torigid (steel), semi-rigid (SMC plastic), or other similar substrates.2. References2.1 Applicable PublicationThe following publication forms a part of this specification to the extent specifiedherein.2.1.1 ASTM PUBL
6、ICATIONAvailable from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.ASTM D 1002Test Method for Strength Properties of Adhesives in Shear by Tension Loading (Metal-to-Metal)3. Definitions3.1 Soft Trim AdhesivesThese adhesives, typically solvent or water based, or hot melts, are applie
7、d to one orboth of the substrates. They develop their strength with the application of heat, pressure, and/or time.3.2 Peel StrengthPeel strength is the force required to separate bonded substrates of a predetermined widthfrom one another at a predetermined rate of speed. The force may be applied at
8、 an angle of 90 degrees(perpendicular) or 180 degrees (parallel) to the substrates.3.2.1 BREAKAWAYLoad required to initiate disbond.3.2.2 AVERAGE PEELThe peel-strength average recorded from 25 mm (1 in) into peel to termination.3.3 Flexible SubstratesDecorative cloth, supported vinyl, and carpet mat
9、erials conforming readily to rigid orsemi-rigid substrate are typically used.3.4 Semi-Rigid/Rigid SubstratesA variety of semi-rigid plastics, hardboards, and sheet metal (painted orunpainted).SAE J1679 Issued APR94-2-3.5 Open TimeThe time between adhesive application and assembly (closing) of the bo
10、nd.3.6 Peel-Strength AverageThe peel-strength average is considered to be the midline of the peel-load variationsas displayed on the universal testing machine.4. Equipment Required4.1 Universal Testing MachineMust meet the requirements of ASTM D 1002 (cross head speed of 50 to500mm/min (2 to 20 in/m
11、in), range 0 to 9.07 kg (0 to 20 lb).4.2 FixtureConstant 90 degree angle frictionless peel fixture.4.3 RollerAble to apply a load of 0.357 kg/cm (2 lb/in) width.4.4 Specimen CutterTwo single-edged razor blades held in parallel planes, 25.4 mm (1.0 in) apart.4.5 Timer0 to 60 min.4.6 Spray Guns4.6.1 A
12、TOMIZINGManufacturers recommendationswith assorted nozzles, air caps, needles, and pressurizingpots.4.6.2 AIRLESSManufacturers recommendationswith assorted nozzles, air caps, needles, and pressurizingpots.5. Method A90 degree Peel5.1 Sample Preparation90 degree Peel5.1.1 Select one 100 x 300 mm (4 x
13、 12 in) semi-rigid/rigid substrate panel for each test condition masking a25x100 mm (1 x 4 in) strip along a 100 mm (4 in) panel edge.NOTE25 panel/strip 90 degree peel-test assemblies are required for each adhesive open time, warp,fill, and adhesive wet-film thickness condition being evaluated. In i
14、nstances where only onesubstrate is coated with the adhesive, mask only that substrate.5.1.2 Cut the flexible material into one 25 x 300 mm (1 x 12 in) test strip for each semi-rigid/rigid substrate panel.NOTEWhen cutting fabrics with a defined weave, cut one set parallel to the warp and one setpara
15、llel to the fill. Both sets shall be tested.5.1.3 Apply the test adhesive for approximately 200 mm (8 in) from one end of the flexible test material strips.NOTEFor spray-applied adhesives, mask 100 mm (4 in) from one end of the substrate aligning thetest strips side by side with their intended bonde
16、d surfaces facing up. Adhesive wet-filmthickness shall be per manufacturers recommendations.5.1.4 Immediately start the open-time timer after applying the adhesive. Carefully remove the masking materialfrom the flexible test strip(s) before applying each strip to the center of a panel.SAE J1679 Issu
17、ed APR94-3-5.1.5 At the appropriate open time(s), apply a flexible test material strip to the center of a semi-rigid/rigid panelaligning the strip with the panels 300 mm (12 in) edges and assuring that the unbonded portion of the flexiblestrip is on the 100 mm (4 in) masked edge with the bonded port
18、ion of the flexible strip starting 25 mm (1 in)from the panels edge. Immediately pressurize the full-bond area rolling it four times (two times forward andtwo back) using the 0.91 kg (2 lb) roller.NOTEEvery effort to eliminate the effects of adhesive squeeze-out on the peel sample should bemade.5.1.
19、6 Repeat the same procedure for the balance of conditions or until all samples are assembled. Remove anymasking from the semi-rigid/rigid panels.5.1.7 On the back of each panel describe the adhesive open time, warp and fill direction, adhesive film thickness,and number the test assembly.5.1.8 Condit
20、ion the panel/strip test assemblies for 24 h at 24 C 2 C (75 F 3 F) (or manufacturersrecommendations).5.2 Peel Procedure90 degrees5.2.1 Mount the 90-degree peel fixture in the universal tester.5.2.2 Install a test assembly in the 90-degree peel fixture aligning the flexible test strip with the unive
21、rsal testersjaw to assure a 90-degree orientation before securing the assembly in the peel fixture and the flexible strip inthe jaw.NOTEAfter securing the test assembly, assure the peel fixture continues to move freely.5.2.3 Activate the universal-testing machine to peel the strip from the panel at
22、arate of 304.8 mm/min (12 in/min)for a minimum of 152 mm (6 in).NOTEPay particular attention that the 90-degree peel fixture continues to move easily maintaining aperpendicular alignment during the peel process. If alignment along this axis exceeds 10degrees, that portion of the test-strip sample sh
23、ould be disregarded.5.2.4 Record the breakaway and average peel value for each test assembly.5.3 Report Requirements90-degree Peel5.3.1 Report the test method number and any deviations from the recommended test method.5.3.2 Report complete identification of samples (open time, warp or fill, adhesive
24、 wet-film thickness), adhesivetype, as well as conditioning time, temperature, and humidity prior to aging and testing.5.3.3 Report the average of the breakaway and average peel values for the samples (in kilograms per centimeterkg/cm width or ounces per inch oz/in width).5.3.4 Report any inconsiste
25、ncies or irregularities (substrate elongation, deformation, etc.) noted during the test.SAE J1679 Issued APR94-4-6. Method B180-degree Peel6.1 Sample Preparation180-degree Peel6.1.1 Select one 100 x 300 mm (4 x 12 in) semi-rigid/rigid substrate panel for each test assembly masking a25x100 mm (1 x 4
26、in) strip along a 100 mm (4 in) panel edge.NOTE25 panel/strip 180-degree peel test assemblies are required for each adhesive open time, warp, fill,and adhesive wet-film thickness condition being evaluated. In instances where only one substrate iscoated with the adhesive, mask only that substrate.6.1
27、.2 Cut the flexible test material into one 25 x 500 mm (1 x 20 in) test strip for each semi-rigid/rigid substratepanel.NOTEWhen cutting fabrics with a defined weave, cut one set parallel to the warp and one setparallel to the fill. Both sets shall be tested.6.1.3 Apply the test adhesive for approxim
28、ately 200 mm (8 in) from one end of the flexible test material strips.NOTEFor spray-applied adhesives, mask 300 mm (12 in) from one end of the flexible substratealigning the test strips side by side with their intended bonded surfaces facing up. Adhesivewet-film thickness shall be per manufacturers
29、recommendations.6.1.4 Immediately start the open-time timer after applying the adhesive. Carefully remove the masking materialfrom the flexible test strip(s) before applying each strip to the center of a panel.6.1.5 At the appropriate open time(s), apply a flexible test material strip to the center
30、of a semi-rigid/rigid panelaligning the strip with the panels 300 mm (12 in) edges and assuring that the unbonded portion of theflexible strip is on the 10 cm (4 in) masked edge with the bonded portion of the flexible strip starting 2.5 cm(1in) from the panels edge.6.1.6 Immediately upon application
31、, roll the entire bonded area of the flexible strip four times (two timesforward and two back) using the two-pound roller.NOTEEvery effort to eliminate the effects of adhesive squeeze-out on the peel sample should be made.6.1.7 Repeat the same procedure for the balance of conditions or until all sam
32、ples are assembled.6.1.8 Condition the panel/strip test assemblies for 24 h at 24 C 2 C (75 F 3 F) (or manufacturersrecommendations).6.2 Peel Procedure180 degrees6.2.1 Insert the 100 mm (4 in) adhesive free edge of the semi-rigid/rigid panel into one of the universal tester jaws.Double back the loos
33、e 300 mm (12 in) of unbonded flexible strip aligning it between the universal testingmachine jaws. Secure both the panel and the aligned flexible strip in the jaws.6.2.2 Activate the universal tester to peel the flexible strip completely from the panel at a rate of 304 mm/min(12in/min)6.2.3 Peel for
34、 a minimum of 152 mm (6 in) recording the breakaway value and average peel value for each testassembly.SAE J1679 Issued APR94-5-6.3 Report Requirements180 degrees6.3.1 Report the test method number and any deviations from the recommended test method.6.3.2 Report complete identification of samples (o
35、pen time, warp or fill, adhesive wet-film thickness), adhesive, aswell as conditioning time, temperature, and humidity prior to aging and testing.6.3.3 Report average breakaway, and average remaining peel run values of the samples (in kilograms percentimeter kg/cm width or ounces per inch oz/in widt
36、h).6.3.4 Report any inconsistencies or irregularities (substrate elongation, deformation, etc.) noted during the test.PREPARED BY THE SAE TRIM ADHESIVES SUBCOMMITTEE OF THESAE MATERIALS JOINING EXECUTIVE COMMITTEESAE J1679 Issued APR94RationaleNot applicable.Relationship of SAE Standard to ISO Stand
37、ardNot applicable.ApplicationThis SAE Recommended Practice shall be used to determine the peel strength achieved by anadhesive when used to bond various decorative, flexible substrates such as cloth supported vinyl orcarpet, to rigid (steel), semi-rigid (SMC plastic), or other similar substrates.Reference SectionASTM D 1002Test Method for Strength Properties of Adhesives in Shear by Tension Loading (Metal-to-Metal)Developed by the SAE Trim Adhesives SubcommitteeSponsored by the SAE Materials Joining Executive Committee
