1、 FORD LABORATORY TEST METHOD BV 101-04 Date Action Revisions 2000 11 09 Revised Editorial no technical change A. Cockman 1991 06 04 Printed copies are uncontrolled Page 1 of 5 Copyright 2000, Ford Global Technologies, Inc. CROSS LAP ADHESION TEST FOR ADHESIVES AND SEALANTS Application This procedure
2、 is used to determine the adhesive properties of bonding materials to automotive body substrates. Apparatus Required Cross Lap Fixture The cross lap fixture shown in Figure 1 and 2 is used to position and secure the test assembly during the material testing. Tensile Machine The tensile machine shall
3、 have a range of 0 - 136 kg with an accuracy of 0.5 % of the range. Oven A mechanical convection oven capable of obtaining 190 C metal temperature on body steel 0.89 mm within 8 - 10 minutes. Panels The test panels shall be cut into 25 x 75 mm coupons from each substrate as specified by the material
4、 specification. Conditioning and Test Conditions All test values indicated he rein are based on material conditioned in a controlled atmosphere of 23 +/ - 2 C and 50 +/ - 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. FO
5、RD LABORATORY TEST METHOD BV 101-04 Page 2 of 5 Copyright 2000, Ford Global Technologies , Inc. Procedure 1. Clean the test coupon s with petroleum naphtha or equivalent. Prepare a minimum of 3 assemblies (6 coupons) for each test condition and exposure. 2. Prepare coupon surfaces with the oil or dr
6、awing compound specified by the material specification. Apply a uniform film coating to one side of each coupon. Condition coupons for 1 h minimum at 23 +/ - 2 C. 3. Apply test material to the center (oiled side) of a prepared coupon. Carefully position the center (oiled side) of another prepared co
7、upon over and perpendicular to the cou pon with applied material. Using thumb pressure, squeeze the coupons together to obtain the specified bond thickness and bond surface area 645 mm. The test material should wet out 2 evenly over both prepared coupon surfaces. See Figure 3 for assembly il lustrat
8、ion. To assist in assembly, coupons can be mounted on a 1.14 mm aluminum plate with shims attached to maintain bond line thickness. 4. Remove excess material and condition the test assemblies for 4 - 24 h at 23 +/ - 2 C and 50 +/ - 5 % relative hum idity. 5. Subject the prepared assemblies to the ba
9、ke schedules specified in the material specification requirements. 6. Condition assemblies for 16 - 24 h at 23 +/ - 2 C and 50 +/ - 5 % relative humidity before normal testing or subjecting to environment al exposures. 7. Place the assembly in the test fixture mounted on the tensile machine and cond
10、uct tensile pull test at a rate of 25 mm per minute. 8. Record the load required to separate the coupons in kPa. Chemicals, materials, parts, and equipment re ferenced in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilit
11、ies. FORD LABORATORY TEST METHOD BV 101-04 Page 3 of 5 Copyright 2000, Ford Global Technologies , Inc. CROSS LAP ADHESION TEST FOR ADHESIVES AND SEALANTS FIGURE 1 DIMENSIONS DETAILED IN FIGURE 2 FORD LABORATORY TEST METHOD BV 101-04 Page 4 of 5 Copyright 2000, Ford Global Technologies , Inc. CRO SS LAP ADHESION TEST FOR ADHESIVES AND SEALANTS FIGURE 2 FORD LABORATORY TEST METHOD BV 101-04 Page 5 of 5 Copyright 2000, Ford Global Technologies , Inc. CROSS LAP ADHESION TEST FOR ADHESIVES AND SEALANTS
