1、This document is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 Navistar Inc. DECEMBER 2009 Page 1 of 8 NAVISTAR INC. TMS (TRUCK MATERIAL SPECIFICATION) NUMBER: TMS-
2、6925 TITLE: Moisture Cured and Air Cured, Pumpable Materials CURRENT REV No.: 0912 DATE: December 2009 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES ISSUE DATED: June 2004 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specificatio
3、n may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory limits prior to u
4、se. Change Notice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive; added CEMS B-50 requirement; clarification of viscosity requirements and cure conditions; added screening tests; editorial changes. Reference: File 30-1 Keywords: sealer, moisture
5、cured, air cured, adhesive 1.0 APPLICATION This specification outlines the requirements for moisture cured and air cured, pumpable sealants and adhesives. 2.0 SCOPE This specification covers the general requirements, property and performance requirements, quality, source approval and quality control
6、 requirements for the various moisture cured and air cured sealants and adhesives, and all approved source lists. 2.1 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the CEMS B-50 specificat
7、ion. 3.0 REFERENCE DOCUMENTS Unless otherwise specified the latest issue of all referenced standards shall apply. The following specifications and standards are referenced in this specification. Quality System Standard ISO 9001 or TS-16949 ASTM B 117 SAE J243 CFR Title 29, Section 1910 ASTM C 794 SA
8、E J1523 NAVISTAR Manufacturing Std. MS-D-13 ASTM C 1135 SAE J1545 NAVISTAR Eng. Design Std. A-16 ASTM C 1241 SAE J1960 NAVISTAR CEMS B-50 ASTM C 1246 NAVISTAR CEMS C-10 ASTM D 624 NAVISTAR CEMS G-5 ASTM D 792 NAVISTAR CEMS GT-7E ASTM G 154 NAVISTAR TMS-9543 3.1 Description of Types A description of
9、the material types and material definitions are included under General Information (section A.0) at the end of this specification. 4.0 GENERAL REQUIREMENTS 4.1 Uncured Sealant Properties 4.1.1 Solids NUMBER: TMS-6925 TITLE: Moisture Cured and Air Cured, Pumpable Materials REVISION: 0912 This documen
10、t is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 Navistar Inc. DECEMBER 2009 Page 2 of 8 4.1.1.1 Method: SAE J243 Procedure ADS-7, Method A 4.1.1.2 Required: 95%
11、minimum solids. 4.1.2 Density 4.1.2.1 Method: ASTM D 792 4.1.2.2 Required: 1.30-1.70kg/L (0.757-0.990lbm/gal) 4.1.3 Viscosity 4.1.3.1 Method A: (Types I, II and V) SAE J243, Test method ADS-1, Procedure 3.2.1, Conditioning Method C, 275 kPa (40 psi), 25 1C (77 2F), 20 g. Orifice size should be chose
12、n so that the test time is equal or longer than 10 seconds. 4.1.3.2 Required: Report value and orifice size 4.1.3.3 Method B: (Types III and IV) SAE J243, Test Method ADS-1, Procedure 3.2.2, Conditioning method C 4.1.3.4 Required: 40-80Ps 4.1.4 Aged Viscosity 4.1.4.1 Method: Age sample at 43 1C (110
13、 2F) for 72 hours. Test viscosity per corresponding method as specified in section 4.1.3. 4.1.4.2 Required: Report value 4.1.5 Cleaning The uncured sealant shall clean readily from metal surface, without streaking, when wiped with a cloth dampened with acetone or isopropanol. 4.1.6 Odor It shall be
14、the suppliers responsibility to determine that the constituent material and finished product are deemed to be non-objectionable and meet all safety standards. 4.2 Property and Performance Requirements For purposes of screening, quick-knife tests may be performed at RT and after water immersion along
15、 with the low temperature adhesion test. 4.2.1 Test Sample Preparation A minimum of five test samples shall be prepared for each condition tested. The surface condition tested should be representative of production conditions and must be fully described in the test report. A material shall be qualif
16、ied only on the surface condition in which it will be used during production. The cure conditions should match production conditions as closely as possible and shall be described fully in the test report. If production conditions do not impair or accelerate the cure, then cure samples for 7 days at
17、room temperature and 95%RH for moisture cured materials or 60%RH for air cured materials. 4.2.2 Aluminum Sheet Stock Surface Preparation Prepare three sets of five test samples from aluminum sheet 5052-H32* per CEMS C-10. Using a solvent (acetone), clean substrate samples thoroughly. The first set s
18、hall be tested clean. The second set shall have a light oil coating, as in steps 4.2.3.5 and 4.2.3.6 listed below. The third set shall be prepared in the following manner: 4.2.2.1 Clean samples thoroughly with acetone. 4.2.2.2 Apply Mill Oil (Ashland Tectyl 900)* liberally to the bonding surface NUM
19、BER: TMS-6925 TITLE: Moisture Cured and Air Cured, Pumpable Materials REVISION: 0912 This document is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 Navistar Inc. DE
20、CEMBER 2009 Page 3 of 8 4.2.2.3 Wipe oil off surface with a clean, soft, paper lab towel. A light oil residue should remain. 4.2.2.4 Bake samples for four (4) hours at 200 C (392 F). 4.2.2.5 Apply drawing lubricant (Quaker 61AUS)* liberally to the bonding surface 4.2.2.6 Wipe oil off surface with a
21、clean, soft, paper lab towel. A light oil residue should remain. 4.2.2.7 Prepare test samples as required * Other grades of aluminum may be used in production. Testing other aluminum grades is not required for qualification but may be necessary in some special cases. Contact Materials Engineering fo
22、r further information. * Other lubricants will be used in production. Sealants and lubricants shall be compatible with each other. Testing compatibility shall be the responsibility of the supplier of the new material. 4.2.3 Aluminum Extrusion Surface Preparation Prepare two sets of five test samples
23、 from aluminum sheet stock of the same grade as the production part. Using a solvent (acetone), clean substrate samples thoroughly. The first set shall be tested clean. The second set shall be prepared as in items 4.2.3.5 and 4.2.3.6 listed above, using extruding and cutting lubricants representativ
24、e of production. 4.2.4 Top Coated Surface Preparation Prepare a set of five test samples for each condition tested. The test samples shall be made from painted metal panels representative of production. Using a lint free cloth, wipe the panels to remove any dust. Solvents shall not be used to clean
25、the painted panels, as they may disturb the coating. 4.2.5 Electrocoated Surface Preparation 4.2.5.1 Metal: Three sets of five test samples shall be made from electrocoated steel representative of production. The steel shall be prepared as described in section 4.2.2 4.2.5.2 Pre-primed metal: Three s
26、ets of five test samples shall be made from pre-primed electrocoated steel representative of production. Using a solvent (acetone or isopropanol) and a lint free cloth, clean substrate samples thoroughly. 4.2.5.3 E-coated metal: Materials to be used over E-coat must be tested with current E-coat sub
27、strate using a nine-condition test matrix. This matrix tests the adhesion of the sealant to E-coated panels which have been exposed to nominal oven conditions of 30 minutes at 175C (350F), over bake conditions of 60 minutes at 200C (390 F), and under bake conditions of 15 minutes at 160C (325F). Thi
28、s matrix also includes test conditions in which the E-coat film thickness is varied at 0.6 mil, 0.9 mil, and 1.2 mil. Ten (10) 4“x12“ panels shall be prepared at each condition. Using a lint free cloth, wipe the panels to remove any dust. Solvent shall not be used to clean the E-coated panels, as it
29、 will disturb the coating. 4.2.6 Shear Strength 4.2.6.1 Method: SAE J1523 with a 25 mm (1 in) overlap at a rate of 50.8mm/min (2.0in/min). Bond thickness shall be 30mil. Test the samples under the conditions described in Table 1A. 4.2.6.2 Required: A minimum of 100psi for sealants and 200psi for adh
30、esives. Report failure mode. 4.2.7 Peel Strength 4.2.7.1 Method: ASTM C 794 Test the samples under the conditions described on Table 1B. Cure conditions shall be as described in section 4.2.1 Test Sample Preparation. The second coat is to be applied on the 4th day of cure. 4.2.7.2 Required: A minimu
31、m of 15lb/in for sealants and 30lb/in for adhesives. Report failure mode. NUMBER: TMS-6925 TITLE: Moisture Cured and Air Cured, Pumpable Materials REVISION: 0912 This document is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Technical Standards.
32、 Suppliers are required to assume all patent liability. 2009 Navistar Inc. DECEMBER 2009 Page 4 of 8 4.2.8 Humidity 4.2.8.1 Method: CEMS GT-7E for 500 hours on test samples prepared for shear strength and peel strength tests. 4.2.8.2 Required: A minimum of 80% of the strength obtained from the test
33、performed at room temperature. 4.2.9 Water Immersion 4.2.9.1 Method: Immerse coupons prepared for shear strength and peel strength tests in distilled water at 25C (77F) 2C (3.6F) for 500hrs. 4.2.9.2 Required: A minimum of 80% of the strength obtained from the test performed at room temperature. 4.2.
34、10 Corrosion 4.2.10.1 Method: ASTM B 117 for 500 hours on test samples prepared for shear strength and peel strength tests. 4.2.10.2 Required: A minimum of 90% of the strength obtained from the test performed at room temperature. 4.2.11 Heat Aging 4.2.11.1 Method: ASTM C 1246 using panels representa
35、tive of production. Include hardness readings of the cured material before and after the heat cycle. After aging, bend the sample 180 around a 25 mm (1in) diameter mandrel. 4.2.11.2 Required: The samples shall exhibit no weight loss, and no visible signs of cracking, chalking or loss of adhesion aft
36、er the heat cycle. The samples shall exhibit no visible signs of cracking or loss of adhesion to the panel after bending. Report hardness readings. 4.2.12 Low Temperature Adhesion 4.2.12.1 Method: SAE J243 procedure ADS-2, Method B, at -29C (-20F), 1.0 inch (25 mm) diameter mandrel, 0.060 inch (1.5
37、mm) sealer thickness x 1.0 inch (25 mm) wide band applied to 4“ x 12“ (100x300mm) panel of metal used for shear strength. 4.2.12.2 Required: Shall exhibit no visible cracking or loss of adhesion to the base panel. 4.2.13 Shrinkage 4.2.13.1 Method: ASTM C 1241 using the density calculated in section
38、4.1.2 4.2.13.2 Required: 5% maximum shrinkage 4.2.14 Tear Strength 4.2.14.1 Method: ASTM D 624 type C, cut the samples from strips of cured material 2.3mm 1.0mm thick. 4.2.14.2 Required: Report value. 4.2.15 Tensile Strength 4.2.15.1 Method: ASTM C 1135 4.2.15.2 Required: Report value. 4.2.16 Staini
39、ng (Types I and V only) 4.2.16.1 Method A: Apply sample to E-coat primed panels 100 x 200 mm (4 x 8 in) and cure (unless a wet-on-wet system approval is requested). Paint per CEMS G-5, Grade -19 (white) and cure paint NUMBER: TMS-6925 TITLE: Moisture Cured and Air Cured, Pumpable Materials REVISION:
40、 0912 This document is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 Navistar Inc. DECEMBER 2009 Page 5 of 8 for 30 minutes at 121C (250F). Per SAE J1960 exterior c
41、ycle, subject panel to 2500kJ/m2 in Xenon Weatherometer. 4.2.16.2 Required: Sealant/adhesive shall cause no discoloration to painted surfaces and compare favorably with the adjoining painted metal surface where no sealant/adhesive has been applied. 4.2.16.3 Method B: Apply sample to E-coat primed pa
42、nels 100 x 200 mm (4 x 8 in) and cure (unless a wet-on-wet system approval is requested). Paint per CEMS G-5, Grade -19 (white) and cure paint for 30 minutes at 121C (250F). Per ASTM G 154, subject panel to 500 hours in QUV Test with the following test cycle. 4.2.16.3.1 8 hours Ultraviolet light 60o
43、 C (140oF) 4.2.16.3.2 4 hours condensing humidity 50o C (122oF) 4.2.16.3.3 Repeat until exposure period is completed. 4.2.16.4 Required: Sealant/adhesive shall cause no discoloration to painted surfaces and compare favorably with the adjoining painted metal surface where no sealant/adhesive has been
44、 applied. 4.2.17 Sag Resistance (Not applicable to Types III and IV) 4.2.17.1 Method: Apply sample along centerline of E-coat primed panels in a 3 x 25 x 200 mm (1/8 x 1 x 8 in) bead. Scribe panels to mark initial material location. Incline panel at a 90 angle with bead horizontal and hold for 48 mi
45、nutes at 25C (77F) room temperature. Measure any movement from scribe. 4.2.17.2 Required: Sealant/adhesive will flow a maximum of 3mm (1/8in) 4.2.18 Accelerated Weathering (Color matched materials only) 4.2.18.1 Method: Apply sample to electrocoated panels 100 x 200 mm (4 x 8 in) that have been pain
46、ted of the same color as the sealant. Allow the material to cure per manufacturers specifications. Expose the samples to accelerated weathering cycles as described in Methods A and B of section 4.2.16 Staining using a top-coated panel of the same color as the control. Perform an Instrumental Color D
47、ifference analysis, per SAE J1545 before and after accelerated weathering. 4.2.18.2 Required: Color difference measurement between the color matched material and the control panel should be E940.5 for good visual color match, and E941.0 for black. 4.2.19 Leveling (Types III and IV only) 4.2.19.1 Met
48、hod: Apply 7.9 mm (5/16 in) bead of sealant down the middle of an E-coat primed 25 mm (1 in) wide drip rail section at 25 1C (77 2F). 4.2.19.2 Required: Sealant shall flow from wall-to-wall with a uniform thickness, within 120 seconds. 4.2.20 Weldability (Type V only) 4.2.20.1 Method: SAE J243 Weld-Through Test ADS-3, Method B. 4.2.20.2 Required: Shall meet tensile, flashing, electrode life, and electrode pickup, as specified. 5.0 QUALITY Material supplied to this specification shall contain no abrasive agents, nor
