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 by Navistar Inc. FEBRUARY 2009 Page 1 of 11 NAVISTAR, INC. TMS (TRUCK MATERIAL SPECIFICATION) NUMBER:
2、 TMS-6915 TITLE: Heat Curing Sealant, Body Cabs CURRENT REV No.: 0902 DATE: February 2009 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: Rev R June 2004 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification may involve hazar
3、dous 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 use. Change Notice:
4、Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive; added CEMS B-50 requirement; update to section 9.0; addition of tables 3 and 4; editorial changes. Reference: File 30-1 Keywords: plastisol, sealant, cab sealant, weld thru sealant. 1.0 APPLICATION T
5、his specification outlines the requirements for several types of non-solvent, heat-cured plastisol type sealants used in truck cab applications prior to finish paint. 2.0 SCOPE This specification covers the general requirements, property and performance requirements, quality, source approval and qua
6、lity control requirements for the various plastisol sealants, 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 specification. 3.0 REFERENCE DO
7、CUMENTS 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 NAVISTAR CEMS GT-7E ASTM D471 CFR-Title 29, Section 1910 NAVISTAR TMS-9013 ASTM D
8、412 NAVISTAR Manufacturing Std. MS- D-13 NAVISTAR TMS-9543 ASTM D2240 NAVISTAR CEMS A-6 NAVISTAR TMS-6925 ASTM D5 NAVISTAR CEMS G-5, Part II NAVISTAR TMS-6927 ASTM B117 NAVISTAR CEMS C-10 NAVISTAR TMS-9010 ASTM G154 NAVISTAR CEMS GT-5A SAE J243 ASTM D792 NAVISTAR CEMS GT-5C SAE J1523 ASTM D1000 SAE
9、J1524 3.1 Description Of Types A description of the sealant types, their cure temperatures, and design guidance in the selection of the proper type to be used in each application, is included in the General Information (section A.0) at the end of this specification. Copyright Navistar International
10、Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-6915 TITLE: Heat Curing Sealant, Body Cabs REVISION: 0902 This document is restricted and may not be sent outside Navistar Inc. or reproduced without pe
11、rmission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 by Navistar Inc. FEBRUARY 2009 Page 2 of 11 4.0 GENERAL REQUIREMENTS 4.1 Uncured Sealant Properties The requirements for uncured sealant properties have been outlined in Table 3 at the end of thi
12、s specification. 4.1.1 Solids 4.1.1.1 Method: SAE J243 Procedure ADS-7, Method A 4.1.1.2 Required: See table 3 4.1.2 Density 4.1.2.1 Method: ASTM D792, Method A 4.1.2.2 Required: See table 3 4.1.3 Viscosity 4.1.3.1 Method A: SAE J243, Procedure ADS-1, Agitated - Conditioning Method C, Pressure Flow
13、Method (Unless Otherwise Indicated), 275 kPa (40 psi), 25 1C (77 2F), 20 g. 4.1.3.1.1 Types I, III, IIIA, IIIB, VI: 2.64 mm (0.104 in) Orifice 4.1.3.1.2 Type IL, IIA: 1.32 mm (0.052 in) Orifice 4.1.3.2 Method B: (Types II, IIL only) SAE J243, ADS-1, Test 2.2 Brookfield, spindle 7, 50 RPM 4.1.3.3 Met
14、hod C: (Types IV, IVL only) ASTM D5 Penetration Method, 100 g T.M.L., 5 sec. 4.1.3.4 Required: See table 3 4.1.4 Aged Viscosity 4.1.4.1 Method: Age sample at 43 1C (110 2F) for 72 hours. Test per corresponding method on section 4.1.3. 4.1.4.2 Required: See table 3 4.1.5 Process Compatibility and Top
15、coat compatibility for other types. Uncured, Type III sealer/adhesive shall remain in joints without flow or washout through the spray and immersion stages of pre-treat and E-coat as required under TMS-9013. It shall be the suppliers responsibility to work with E-coat primer and pretreatment supplie
16、rs to determine that Type III sealer/adhesive will not cause contamination of these process baths. 4.1.6 Cleaning The uncured sealant shall clean readily from metal surface, without streaking, when wiped with a cloth dampened with mineral spirits or isopropanol. 4.1.7 Odor It shall be the suppliers
17、responsibility to determine that the constituent material and finished product are deemed to be non-objectionable and meet all safety standards. 4.1 Property and Performance Requirements 4.2.1 Sample Preparation A minimum of five samples shall be prepared for each condition tested. The surface condi
18、tion tested should be representative of production conditions and must be fully described in the test report. The cure conditions should match production conditions as closely as possible and shall be described fully in the test report. Copyright Navistar International Corporation Provided by IHS un
19、der license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-6915 TITLE: Heat Curing Sealant, Body Cabs REVISION: 0902 This document is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Techni
20、cal Standards. Suppliers are required to assume all patent liability. 2009 by Navistar Inc. FEBRUARY 2009 Page 3 of 11 4.2.1.1 Temperature: Times and temperatures used should represent actual bond line conditions rather than the indicated temperatures of the heating elements or the oven air temperat
21、ure. The oven bake schedules per facility are outlined on table1 at the end of this specification. 4.2.2 Cure Temperature Cycle Materials shall be tested at both minimum cure and in an over-cure condition by heating in a hot air circulating oven for 60 minutes at the maximum of the cure temperature
22、range and for 20 minutes at the minimum of the cure temperature range. 4.2.2.1 Material Type Cure Temperature: 4.2.2.1.1 Types I, II, IV 138 -165 C (280 -330 F) 4.2.2.1.2 Types IL, IIL, IVL 120 -135 C (248 -275 F) 4.2.2.1.3 Type IIA 130 -140 C (266 -284 F) 4.2.2.1.4 Types III, IIIA, IIIB, IIIC, VI 1
23、60 -190 C (320 -374 F) 4.2.3 Aluminum Surface Preparation Three sets of five samples of aluminum test samples shall be made for each condition tested. Prepare samples from aluminum sheet 5052-H32* per CEMS C-10. Using a solvent (acetone), clean substrate samples thoroughly. The first set shall be te
24、sted clean. The second set shall have a light oil coating, as in steps 4.2.3.6 and 4.2.3.7 listed below. The third set shall be prepared in the following manner: 4.2.3.1 Prepare samples from Aluminum sheet 5052-H32* per CEMS C-10. 4.2.3.2 Clean samples thoroughly with acetone. 4.2.3.3 Apply Mill Oil
25、 (Ashland Tectyl 900)* liberally to the bonding surface. 4.2.3.4 Wipe oil off surface with a clean, soft, paper lab towel. A light oil residue should remain. 4.2.3.5 Bake samples for four (4) hours at 200 C (392 F). 4.2.3.6 Apply Drawing lubricant (Quaker 61AUS)* liberally to the bonding surface. 4.
26、2.3.7 Wipe oil off surface with a clean, soft, paper lab towel. A light oil residue should remain. 4.2.3.8 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 case
27、s. Contact Materials Engineering for 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. The Plant Metallurgist and/or Quality Control E
28、ngineer at the Navistar Body Plant in Springfield, Ohio, maintain a list of approved lubricants. 4.2.4 Steel Surface Preparation Two sets of five samples of electrogalvanized steel (Steel, Grade 1GALV, EG60G60GE, per CEMS A-6, Part II) test samples shall be made for each condition tested. Prepare sa
29、mples from electrogalvanized steel*. Using a solvent (acetone), clean substrate samples thoroughly. The first set shall be tested clean. The second set shall have a light oil coating, as in steps 4.2.3.6 and 4.2.3.7 listed under Section 4.2.3, Aluminum Surface Preparation. *Other grades of steel may
30、 be used in production. Testing other steel types is not usually required but may be necessary in some cases. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-6915 TITL
31、E: Heat Curing Sealant, Body Cabs REVISION: 0902 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 by Navistar Inc. FEBRUARY 2009 Page 4 of 11 4.2.5 E-
32、coat Surface Preparation Materials to be used over E-coat must be tested with current E-coat substrate 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 condi
33、tions of 60 minutes at 200C (390 F), and under-bake conditions of 15 minutes at 160C (325F). This 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. See table 2 for bake sched
34、ules per condition. 4.2.6 Shear Strength 4.2.6.1 Method: SAE J1523 with shear lap measured using two metal coupons as specified 25 x 100 mm (1 x 4 in), lapped 25 mm (1 in) with the specified bond line thickness, cured and pulled at a rate of 50 mm (2 in) per minute. Aluminum and steel samples shall
35、be prepared as noted above. 4.2.6.1.1 Type I, IL, II, IIA, IIL, IV, IVL: 0.76 mm (0.03 in) thick bond line with E-coat primed steel 4.2.6.1.2 Type III, IIIA: 0.25 mm (0.01 in) thick bond line with aluminum 4.2.6.1.3 Type IIIB: 0.25 mm (0.01 in) thick bond line with electrogalvanized steel 4.2.6.2 Re
36、quired: See table 4 4.2.7 Corrosion 4.2.7.1 Method: ASTM B117 salt spray test-100 hours, on coupons prepared for shear strength test. 4.2.7.2 Required: See table 4 4.2.8 Humidity 4.2.8.1 Method: Expose specimens prepared for shear strength to 500 hours of humidity conditions per CEMS GT-7E. Test res
37、idual strength. 4.2.8.2 Required: See table 4 4.2.9 Staining (Types I, IL II, IIA, IIL, IV and IVL only) Materials shall be tested under both methods 4.2.9.1 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
38、CEMS G-5, Grade -19 (white) and cure paint for 30 minutes at 121C (250F). Subject panel to 2500kJ/m2 in Xenon Weatherometer exterior cycle per CEMS GT-31 Method B. 4.2.9.2 Method B: 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 requeste
39、d). Paint per CEMS G-5, Grade -19 (white) and cure paint for 30 minutes at 121C (250F). Subject panel to 500 hours in QUV-B Test per CEMS GT-31 Method D. 4.2.9.3 Required: See table 4 4.2.10 Low Temperature Adhesion 4.2.10.1 Method: SAE J243 procedure ADS-2, Method B, at -29C (-20F), 1.0 inch (25 mm
40、) diameter mandrel, .060 inch (1.5 mm) sealer thickness x 1.0 inch (25 mm) wide band applied to 4“ x 12“ (100X300mm) panel of metal used for shear strength. 4.2.10.2 Required: See table 4 4.2.11 Shrinkage (Not applicable to Types IIIA, IIIB and VI) 4.2.11.1 Method: Fill small, flat container 50 mm d
41、iameter x 6 mm height (2 in diameter x 1/4 in height) with sealant material and subject leveled product to maximum curing temperatures for 40 minutes. Observe at room temperature. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or n
42、etworking permitted without license from IHS-,-,-NUMBER: TMS-6915 TITLE: Heat Curing Sealant, Body Cabs REVISION: 0902 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 paten
43、t liability. 2009 by Navistar Inc. FEBRUARY 2009 Page 5 of 11 4.2.11.2 Required: See table 4 4.2.12 Heat Aging 4.2.12.1 Method A: Heat age sample from shrinkage test in recirculating air oven for three hours at max curing temperature. Check hardness. 4.2.12.2 Method B (Types I, II, & III only, in ad
44、dition to Method A): Apply a 0.8 mm (0.03 in) thick x 50 mm (2 in) width coating to an E-coat primed 100 x 300 mm (4 x 12 in) steel panel. Age as indicated in Method A and cool to room temperature. Bend sample 180 around a 25 mm (1 in) diameter mandrel. 4.2.12.3 Required: See table 4 4.2.13 Sag Resi
45、stance (Not applicable to Types II, IIA and IIL) 4.2.13.1 Method: Apply sealant to E-coat primed panels in a 6 mm (1/4 in) bead. Incline panel at 90 angle with bead horizontal. Hold for 15 minutes at 25C (77F) room temperature. Cure at the same angle for 40 minutes at the specified temperature accor
46、ding to Schedule 3 (maximum sealer bake) listed in Table 2. 4.2.13.2 Required: See table 4 4.2.14 Leveling (Types II, IIA and IIL only) 4.2.14.1 Method: Apply 7.9 mm (5/16 in) bead of sealant down the middle of an E-coated, 25 mm (1 in) wide drip rail section at 25 1C (77 2F). 4.2.14.2 Required: See
47、 table 4 4.2.15 Weldability (Types III, IIIB and VI only) 4.2.15.1 Method: SAE J243 Weld-Through Test ADS-3, Method B. 4.2.15.2 Required: See table 4 4.2.16 Expansion (Types IIIA, IIIB and VI only) 4.2.16.1 Method: Cure as specified. Determine volume change per ASTM D471. 4.2.16.2 Required: See tabl
48、e 4 4.2.17 Paint Adhesion (Types I, IL II, IIA, IIL, IV and IVL only) Materials shall be tested under both methods 4.2.17.1 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 cu
49、re paint for 30 minutes at 121C (250F). Test per CEMS GT-5A. 4.2.17.2 Method B: 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 for 30 minutes at 121C (250F). Test per CEMS GT-5C. 4.2.17.3 Method C: Apply sample to E-coat primed panels 100 x 200 mm (4 x 8 i
