METHOD FOR PRODUCING PREPARED SLIDE FOR FIBER LENGTH MEASUREMENT, METHOD FOR ADJUSTING DISPERSION LIQUID FOR FIBER LENGTH MEASUREMENT, METHOD FOR MEASURING FIBER LENGTH, PREPARED SLIDE FOR FIBER LENGTH MEASUREMENT, DEVICE FOR MEASURING FIBER LENGTH, AND PROGRAM THAT CONTROLS DEVICE FOR MEASURING FIBER LENGTH

摘要

Provided are a method for producing a preparation for fiber length measurement, a method for preparing a dispersion liquid, a method for measuring a fiber length, a preparation for fiber length measurement, a fiber length measurement apparatus, and a control computer program for a fiber length measurement apparatus that can measure a fiber length of reinforcing fibers with less sampling bias and efficiently. The method for producing a preparation for fiber length measurement of the present invention includes a preliminary dispersion process (Step S1) of adding fibers and a dispersion medium with a certain viscosity to a sealable container so as to give a concentration of the fibers of 0.1% by mass or less to prepare a preliminary dispersion liquid, a dispensing process (Step S2) of dispensing part of the preliminary dispersion liquid, a dilution process (Step S3) of adding the dispersion medium so as to give a concentration of the fibers of 0.005% by mass or less to prepare a dispersion liquid, and a casting process (Step S4) of spreading the dispersion liquid onto a base having light transparency.