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Title:
METHOD FOR EVALUATING HARDNESS OF ULTRAVIOLET-RAY SETTING RESIN
Document Type and Number:
Japanese Patent JP3034097
Kind Code:
B2
Abstract:

PURPOSE: To evaluate hardness of ultraviolet-ray setting resin which is used as a protective coating material or the like for an optical fiber easily in a short time and with high accuracy.
CONSTITUTION: Ultraviolet-rays are applied to unhardened ultraviolet-ray setting resin to obtain a heat generation curve due to photopolymerization, and this curve is integrated to calculate an entire calorific value and a partial calorific value to optional time. Hardness of the ultraviolet-ray setting resin is evaluated from a change of a ratio of the entire calorific value and the partial calorific value with respect to application time.


Inventors:
Inoue, Naoya
Chiba, Minoru
Shiono, Takeo
Application Number:
JP1991000298976
Publication Date:
April 17, 2000
Filing Date:
November 14, 1991
Export Citation:
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Assignee:
SHOWA ELECTRIC WIRE & CABLE CO LTD
International Classes:
G01N25/20; G01N33/44; (IPC1-7): G01N25/20; G01N33/44
Attorney, Agent or Firm:
須山 佐一 (外1名)