| abstract |
PROBLEM TO BE SOLVED: To provide an efficient and accurate method for measuring the fiber length distribution of a glass fiber in a thermoplastic resin containing glass fiber, and to provide a measuring device. To do. SOLUTION: The fiber length distribution of glass fibers in a thermoplastic resin containing glass fibers is determined by the following steps (1) to (4). The glass fiber length distribution measuring method measured in (4). (1) 500 to 7 thermoplastic resins containing glass fibers Ash at a temperature of 00 ° C. (2) Disperse uniformly in a liquid having a weight 1000 times or more the weight of the glass fiber after incineration. (3) From the uniform dispersion, the weight of the glass fiber is 0.1 to 2 m. A part of the uniform dispersion is taken out so as to be in the range of g. (4) Glass fibers are taken out from a part of the uniform dispersion by filtration or drying, and the fiber length is measured for all the glass fibers. |