ASTM D2584 Ignition Loss of Cured Reinforced Resins

Ignition Loss Test of Cured Reinforced Resins by ASTM D2584 is done in cured reinforced resins to evaluate the fiber content remaining after burning. This helps in evaluating the composition of the test material. Read more about ASTM D2584 Ignition Loss of Cured Reinforced Resins below.

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Overview
Scope, Applications, and Benefits
Test Process
Specifications
Instrumentation
Results and Deliverables

Overview

ASTM D2584 is a test method that determines the amount of material left after a controlled burning of the cured reinforced resin. Weighing the residue left after ignition isolates the inorganic material, or glass fibers, in the sample.

In a composite material that is a combination of glass reinforcement and organic resin, the ignition loss is a direct measure of the amount of resin in the material. This is a common method used to determine the ratio of fibers to resin in reinforced plastics.

Scope, Applications, and Benefits

Scope

ASTM D2584 applies to cured reinforced resin systems, particularly glass fiber reinforced plastics (GFRP) and other thermoset composite materials. The standard outlines a test method for determining material composition by measuring weight loss after ignition, which helps quantify resin and fiber content in the composite.

It determines:

Ignition loss percentage
Resin content (when only glass reinforcement is present)
Fiber content after burn-off

Applications

Quality control of reinforced composites
Verification of fiber-resin ratio
Incoming inspection of composite laminates
Process validation in composite manufacturing
Marine composite products
Construction panels and structural composites
Research and development of reinforced resins

Benefits

Simple and reliable determination of resin content
Accurate evaluation of fiber percentage
Supports process consistency
Improves composite material performance control
Ensures compliance with material specifications
Provides standardized and repeatable testing procedure

Test Process

Specimen Preparation

Condition three ~5 g specimens for at least 40 hours at laboratory conditions. Prepare pre-weighed, pre-dried crucibles.

Initial Weighing

Weigh each specimen to the nearest 0.1 mg and record the initial weight.

Ignition & Cooling

Place specimens in crucibles and heat at 565°C ± 28°C until all ორგანics are burned off. Cool in a desiccator.

Final Weighing & Calculation

Measure the residue weight and calculate ignition loss percentage from the weight difference.

Technical Specifications

Parameter	Details
Applicable Materials	Cured reinforced resins (typically glass fiber composites)
Furnace Temperature	565°C ± 28°C
Specimen Weight	Approximately 5 g
Specimen Dimensions	Approx. 2.5 in × 2.5 in × required thickness
Number of Specimens	Three
Measurement Accuracy	0.1 mg (analytical balance)

Instrumentation Used for Testing

Muffle furnace (capable of 565°C ± 28°C)
Ceramic or metal crucibles
Analytical balance (0.1 mg precision)
Desiccator
Conditioning chamber (standard laboratory atmosphere)
Heat-resistant handling tools

Results and Deliverables

Ignition loss percentage (%)
Calculated resin content (if applicable)
Calculated fiber content (%)
Test report with specimen details
Quality control documentation

Frequently Asked Questions

ASTM D2584 is a test method used to determines resin, fiber, and filler content of cured reinforced plastics using ignition loss procedure.

ASTM D2584 is primarily used for glass fiber reinforced thermoset composites such as polyester, vinyl ester, and epoxy resins where the matrix can be safely burned off.

The standard recommends heating the specimen to approximately 565°C (1050°F) to ensure complete resin burn-off while preventing damage or degradation of the glass fiber reinforcement.

The standard measures Barcol hardness, which indicates resistance to surface indentation and provides an indirect evaluation of stiffness and cure condition.

It ensures correct glass fiber content, which directly influences strength, stiffness, durability, and structural performance of composite material.