1、A.C.N. 006 893 232Holden LimitedEngineering DepartmentLABORATORY TEST METHODNUMBERSHEETRELEASEREVISION:HN 02851 of 2September, 2000April, 2001NAME: PURGE SOLVENT EFFICIENCY TESTTHIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TOTHE COMPANYS PRODUCTS THE RECIPIENT IS RESPONSIBLE TOCONFIRM TH
2、E DOCUMENT ISSUE DATE IS STILL VALID.FORM : I:LABRTORYFORMSTDMATTEST.DOC1. SCOPEThis test method evaluates the efficiency of a purge solvent to clean away paintmaterials such as primer, basecoat, clearcoat and mono-coats.2. PANEL PREPARATIONUse a clear glass panel.3. APPARATUS3.1 Drawdown bar3.2 Mea
3、suring device3.3 Burette3.4 Oven - fan forced convection3.5 Holden standard solvent test solution- 10% n-Butyl Acetate- 30% Toluene or Xylene- 60% Xylene or Holden Reclaimed Solvent.4. METHOD4.1 Apply 25-100 micrometres (wet film build) of paint material on glass panelusing a drawdown bar. The dry f
4、ilm build will depend on the volume solidsof the paint. The minimum area of the panel to be covered in paint is100mm wide by 150mm long.4.2 Flash the panel off at room temperature for 5 minutes and place the panelin a fixture at a 45 degree angle.4.3 From a 25ml burette with the tip positioned 25mm
5、above the glass panel,apply 10 drops of the proposed purge solvent (1 drop per second) onto thepaint film in the same spot, which should be 50mm form the top of thepanel and allow to run down the panel.A.C.N. 006 893 232Holden LimitedEngineering DepartmentLABORATORY TEST METHODNUMBERSHEETRELEASEREVI
6、SION:HN 02852 of 2September, 2000April, 2001NAME: PURGE SOLVENT EFFICIENCY TESTTHIS DOCUMENT MUST NOT BE REPRODUCED. IF USED IN RELATION TOTHE COMPANYS PRODUCTS THE RECIPIENT IS RESPONSIBLE TOCONFIRM THE DOCUMENT ISSUE DATE IS STILL VALID.FORM : I:LABRTORYFORMSTDMATTEST.DOC4. METHOD (continued)4.4 R
7、epeat steps 4.1 to 4.3, however this time the purge solvent to be usedshould be the Holden standard solvent test solution.4.5 Cure the two glass sample panels at the recommended bake schedule,photocopy panels for documentation and record the product codes andcolour codes of all materials used in tes
8、t.5. EVALUATIONObserve the cleaning efficiency of the proposed purge solvent against the Holdenstandard solvent. The proposed purge solvent material must be equal to or betterthan the control.6. REVISIONSApril, 2001 - Change name of test method.- Add section 3.5 to specify composition of Holdenstandard solvent test solution.- Add section 4.4 so that comparison is madebetween Holden standard solvent test solution andpurge solvent under investigation.Prepared By: Aaron Rust
