1、 FORD LABORATORY TEST METHOD BU 104-01 Date Action Revisions 2000 11 13 Revised Editorial no technical change A. Cockman 1989 08 02 Printed copies are uncontrolled Page 1 of 4 Copyright 2000, Ford Global Technologies, Inc. VISCOSITY OF ADHESIVES AND SEALERS (MOBILOMETER METHOD) Application This proc
2、edure describes the method used to measure the viscosity of adhesives and sealers of the medium consistency type, i.e. in the range 50,000 - 200,000 MPas. This method is appl icable to both the solvent release and solvent free materials, in either the as received or aged condition. Apparatus Require
3、d 1. Mobilometer - See Figures 1 and 2 Sources: Gardner Laboratory, Inc. Elconometer Instr. Ltd. Bethesda 14, MD USA Farfield Road Droylsden Manchester, England Firma Erichsen 5870 Hemer Sundwig Westfalen, Germany The Mobilometer consists of a cylinder (A) which holds the material under test and a h
4、ole disc (B) with guide - rod (C) and weight platform (D). The hole disc is inter changeable, and contains either 4 holes or 51 holes. The total weight of the disc (B), guide - rod (C), and weight platform (D) is 100 g. If the viscosity of the material under test or the relevant Engineering Material
5、 Specification requires it, additional weights may be added to the weight platform. 2. Stopwatch 3. Level 4. Weights 50 g, 100 g, 200 g 5. Laboratory Forced Air Circulation Oven Capable of maintaining temperatures up to 60 +/ - 2 C. FORD LABORATORY TEST METHOD BU 104-01 Page 2 of 4 Copyright 2000, F
6、ord Global Technologies, Inc. Preparation of Test Material 1. Viscosity as Received Condition the sample for 24 hours at 23 +/ - 2 C, to determine the viscosity at this temperature, as prescribed under Procedure below. 2. Viscosity after Ageing Fill a container (a 1 liter can with press lid) three q
7、uarters full with the material unde r test, ensuring that the lid is tightly closed. Condition the material for 336 hours at the following ageing temperatures, and an additional 24 hours at 23 +/ - 2 C. Viscosity is then determined at 23 +/ - 2 C. Ageing Temperatures Solvent Release Mate rial 50 +/
8、 2 C Solvent Free Material 30 +/ - 2 C Procedure 1. Fill cylinder (A) to a depth of approximately 200 mm with the material under test (instrument must be level). 2. Assemble the disc (B), guide - rod (C) and weight platform (D) and introduce the disc into the cylinder just below the uppermost level
9、 of the sample. Selection of the correct disc and additional weights must be as required by the relevant Engineering Materials Specification. The guide rod must be free of any adhering test materia l which would hinder it in its travel through the guide support (E). 3. Start the guide rod by releasi
10、ng the support screw, start the stopwatch and observe the time taken by the rod (with disc and weight platform) to fall through 100 mm. Evaluation The test report should include: 1. Viscosity in seconds as received or after ageing (i.e. time taken by the guide - rod to fall through 100 mm). 2. Disc
11、used (number of holes). 3. Additional weights used. Chemicals, materials, parts, and equipment referenc ed in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilities. FORD LABORATORY TEST METHOD BU 104-01 Page 3 of 4 Copyright 2000, Ford Global Technologies, Inc. VISCOSITY OF ADHESIVES AND SEALERS Figure 1 FORD LABORATORY TEST METHOD BU 104-01 Page 4 of 4 Copyright 2000, Ford Global Technologies, Inc. VISCOSITY OF ADHESIVES AND SEALERS Figure 2
