Resin material analysis method and resin material analysis device

The non-destructive NIR spectroscopy-based method addresses the destructive nature of existing hydrolysis evaluation methods, enabling accurate and timely assessment of resin material degradation for improved device maintenance and material development.

WO2026110630A1PCT designated stage Publication Date: 2026-05-28AUTONETWORKS TECH LTD +2
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
AUTONETWORKS TECH LTD
Filing Date
2025-11-07
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

Existing methods for evaluating the degree of hydrolysis in resin materials are destructive and cannot be applied non-destructively, which limits their applicability in assessing the suitability of resin materials in devices and components.

Method used

A non-destructive resin material analysis method using near-infrared (NIR) spectroscopy to analyze the degree of hydrolysis in resin materials by comparing NIR spectra of reference and target samples, focusing on the absorption by hydroxyl groups, and utilizing multiple regression analysis for estimation.

Benefits of technology

Enables non-destructive evaluation of hydrolysis progression in resin materials, allowing for timely inspection and maintenance of devices and components, and informing material development and environmental considerations.

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Abstract

The present invention provides a resin material analysis method and a resin material analysis device, with which it is possible to nondestructively evaluate the degree of progress of hydrolysis for a resin material that contains a polymer having hydrolyzability.　Provided is a resin material analysis method in which a resin material that contains a polymer having hydrolyzability is subjected to: a reference measurement step for performing near-infrared spectroscopic measurement on a plurality of reference samples that are composed of the resin materials having different degrees of progress of hydrolysis so as to obtain a plurality of reference spectra; an objective measurement step for performing near-infrared spectroscopic measurement on an objective sample that is composed of the resin material having an unknown degree of progress of hydrolysis so as to obtain an objective spectrum; and an estimation step for estimating the degree of progress of hydrolysis in the objective sample by comparing the objective spectrum with the plurality of reference spectra in a wavelength range including contributions (A, B) of near-infrared absorption by a hydroxyl group.
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