Porous plate-like filler aggregate, method for producing the same, and heat insulating film including porous plate-like filler aggregate

摘要

Provided is a porous plate-like filler assembly comprising a plurality of porous plate-like fillers having a small maximum length variation and a uniform shape. This is a porous plate-like filler assembly 1 composed of a plurality of porous plate-like fillers 1a. The porous plate-like filler 1a has a plate shape with an aspect ratio of 3 or more, a minimum length of 0.1 to 50 μm, a porosity of 20 to 99%, and is obtained by the following formula: The maximum length variation among the plurality of porous plate fillers is 10% or less. Variation in maximum length (%) = standard deviation of maximum length / average value of maximum length × 100 (where “maximum length” is the maximum when a porous plate filler is sandwiched between a pair of parallel surfaces) Is the length.)