Weathering test apparatus
AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsKanji Mori, Takeshi Narita, Kazuo Okamoto, Masao Tsuji, Kazuyuki Tachi
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Abstract
A weathering test method comprising making active oxygen and light simultaneously act on a test piece, a weathering test method comprising successive and/or alternate steps of making active oxygen and light simultaneously act on a test piece and making at least one of light, oxygen, and water to act on the test piece, and apparatus for carrying out the methods are disclosed. In evaluating weatherability of organic materials, articles made of organic materials or articles coated with organic materials, the methods and apparatus achieve acceleration of deterioration of test pieces to greatly reduce the testing time.
Claims20
A weathering apparatus comprising:
- a container for holding a test piece;
- means for simultaneously making light and an aqueous solution of an oxidizing agent act on the test piece wherein the concentration of the oxidizing agent is a concentration of 0.01-3.0 percent by weight,
- wherein the oxidizing agent comprises at least one member selected from the group consisting of hydrogen peroxide, peracids, peracid salts, hypohalogenous acids, and hypohalogenous acid salts.
A weathering apparatus comprising:
- a container for holding a test piece;
- means for simultaneously making light and an aqueous solution of an oxidizing agent act on the test piece wherein the concentration of the oxidizing agent is a concentration of 0.01-3.0 percent by weight;
- and
- means for making at least one of light and water act on the test piece,
- wherein the oxidizing agent comprises at least one member selected from the group consisting of hydrogen peroxide, peracids, peracid salts, hypohalogenous acids, and hypohalogenous acid salts.
Dependencies are inferred from the claim text.