This commercial item description covers two types and two classes of polish suitable for cleaning and protecting automobile finishes.
The automobile polish shall be of the following types of classes:
Type I – Liquid
Type II - Paste
Class I – Without silicone
Class II –With Sillicone
Salient characteristics:
The polishes shall consist of natural or synthetic waxes, or a mixture of both, volatile aliphatic solvents, polishing oils or silicone oils as applicable and mild abrasives. The type I polish shall be emulsified in water to form a stable, free flowing emulsion that can be readily dispersed upon shaking.
Gloss. The polish shall produce a gloss or equal or superior to that produced by the comparison sample , (see note).
Preparation of test panels. Prepare five duplicate panels of the comparison sample and the test polish. Obtain steel panels covered with black automobile-lacquer- and buff with 00 steel wool until a uniform matte finish is obtained. Wash with alcohol, rinse with tap water, and blot dry with a paper level towel.
Application of polish. Using a soft cloth, apply a small amount of polish to test panel, rubbing in circular motion with the end of one finger. Use moderate pressure for a few seconds to apply a thin, even layer of polish. Allow the polished panel to dry for 5 to 6 minutes at room temperature and examine visually. Panel should be free from streaking and irregular deposits of polish. Buff lightly with lambs wool for 3 to 4 second and measure gloss.
Gloss measurement. Gloss measurement shall be conducted with an instrument conforming to ASTM D 523 using an angle of reflectance of 60 degrees.
Weatherability. The polish shall retain in a gloss equal or superior to that of the comparison sample.
Weathering apparatus. Use a weathering apparatus for exposing polished panels to cycles of carbon arc light and water spray conforming to ASTM C- 23. Alternately the same exposure may be produced with the xenon-arc apparatus conforming to ASTM C- 26.
Gloss retention after weathering. Prepare five duplicate panels of the comparison sample and the test polish and place in the weathering apparatus. Subject them to a cycle of 102 minutesof carbon arc light and 18 minutes of water spray for a 48-hour period. Remove the panels from the apparatus and wipe them lightly with a soft cloth. Let the panels dry and then determine the gloss of each panel within 24-hours as specified above under gloss measurement.
Cleaning ability. The polish shall completely remove the test soil from the panels when tested as follows:
Preaparation of test panels. Prepare five white panels as described under gloss, except buffing to a matte finish is not required; apply drops of a 1 percent solution of standard soil 2/ in tap water over the surface of the panel and allow to dry at room temperature. Then allow to stand for 16 hours in an oven maintained at 105oC + 2oC. The dried, baked soil should appear as a pattern of dirty spots on the test panels.
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