ISO 4895-2014 PDF

Full title and description

ISO 4895:2014 — Plastics — Liquid epoxy resins — Determination of tendency to crystallize. This International Standard specifies a simple observational method to determine the tendency of liquid epoxy resins to crystallize by monitoring changes in fluidity and the onset of crystallization over specified time intervals.

Abstract

ISO 4895:2014 specifies a method for determining the tendency of liquid epoxy resins to crystallize. The tendency to crystallize is determined by observing, at specified time intervals, changes in fluidity and the onset of crystallization.

General information

• Status: Published (confirmed International Standard).
• Publication date: 14 July 2014 (Edition 3, 2014).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 83.080.10 (Thermosetting materials).
• Edition / version: Edition 3 (2014).
• Number of pages: 3 (official ISO publication length).

Scope

This standard applies to liquid epoxy resins and provides a reproducible laboratory procedure to assess their tendency to crystallize. It is intended to identify and compare the crystallization behaviour of liquid epoxy resins by periodic observation of fluidity changes and the first appearance of crystalline material. The method is suitable for use in R&D, quality control and material specification activities where knowledge of crystallization tendency is required.

Key topics and requirements

• Definition of the test principle: observational determination of crystallization tendency by monitoring fluidity and visual onset of crystallization at specified intervals.
• Sample preparation and conditioning requirements appropriate for liquid epoxy resins (as defined by the procedure).
• Specified time intervals and observation protocol to ensure repeatability.
• Reporting format: description of observed changes in fluidity, time to first visible crystallization and any relevant test conditions.
• Applicability limited to liquid epoxy resins (not intended for heavily filled systems or cured materials without adaptation).

Typical use and users

Used by epoxy resin manufacturers, polymer R&D laboratories, quality-control and acceptance testing laboratories, material specification writers and procurement professionals who need to evaluate and compare the crystallization behaviour of liquid epoxy resins for storage, processing and application purposes.

Related standards

ISO 4895:2014 supersedes earlier editions of ISO 4895. It sits alongside other ISO test methods for plastics and thermosetting materials developed under ISO/TC 61 (for example, related laboratory test method standards for thermosetting resins and reagents). Users commonly consult the wider family of ISO plastics test methods when preparing test programmes or specifications.

Keywords

ISO 4895, epoxy resin, liquid epoxy, crystallization, tendency to crystallize, fluidity, thermosetting materials, quality control, polymer testing.

FAQ

Q: What is this standard?

A: ISO 4895:2014 is an International Standard that defines a laboratory method to determine the tendency of liquid epoxy resins to crystallize by observing changes in fluidity and the first appearance of crystals.

Q: What does it cover?

A: It covers an observational test procedure for liquid epoxy resins — specifying how to observe and record changes in fluidity and the onset of crystallization at prescribed intervals so that tendencies can be compared between products and batches.

Q: Who typically uses it?

A: Manufacturers, R&D and QC laboratories, materials engineers, and procurement/specification teams working with liquid epoxy resins.

Q: Is it current or superseded?

A: ISO 4895:2014 (Edition 3) is the current edition; the publication was reviewed and confirmed in 2025 and remains the active edition as of the latest ISO review. It replaced earlier editions (for example, the 1997 edition).

Q: Is it part of a series?

A: It is part of the body of ISO standards and test methods for plastics and thermosetting materials developed under ISO/TC 61/SC 12; it complements other test methods for thermosetting resins and related reagent standards.

Q: What are the key keywords?

A: Epoxy resin, liquid epoxy, crystallization, fluidity, thermosetting, ISO 4895, tendency to crystallize, polymer testing.