EN ISO 14528-2:1999 PDF

Overview

EN ISO 14528-2:1999 (ISO 14528-2:1999) defines standardized procedures for preparing test specimens and determining the properties of melamine‑formaldehyde powder moulding compounds (MF‑PMCs). It is Part 2 of the ISO 14528 series and is intended to ensure reproducible, comparable test results by specifying handling, conditioning, moulding and test procedures for MF‑PMCs.

Key topics and requirements

• Specimen preparation methods: Details on when to use injection moulding (ISO 10724-1/2) or compression moulding (ISO 295), and the requirement that a single, consistent procedure be used for all specimens of a given material.
• Processing conditions (ranges): Example ranges given in the standard include injection melt temperature (≈105–115 °C) and mould temperature (≈155–165 °C), and compression moulding mould temperature (≈155–160 °C), mould pressure (20–40 MPa) and cure time guidance. Selected values must be fixed and reported for reproducibility.
• Material pretreatment and storage: Requirements for moisture‑proof storage and permitted pre‑treatments (drying, preforming, preplastification) referenced to ISO 295 and manufacturer recommendations.
• Conditioning of specimens: Two conditioning methods are specified-Method 1 (standard atmosphere per ISO 291: 23 ±2 °C, 50 ±5 % RH for ≥16 h) and Method 2 (24 h water soak followed by ISO 291 conditioning).
• Properties and test methods: Lists properties appropriate to MF‑PMCs drawn from ISO 10350‑1 (rheological, mechanical, thermal, electrical, flammability, density, water absorption, shrinkage, etc.) and references to specific test standards (ISO 527, ISO 178, ISO 179, ISO 2577, ISO 2039‑1, IEC electrical/flammability methods).
• Reproducibility emphasis: The standard stresses that different specimen dimensions or preparation routes may produce different numeric values and requires reporting of exact procedures used.

Practical applications and users

• Who uses it: material manufacturers, polymer testing laboratories, quality assurance teams, injection/compression moulders, product designers, R&D and standards/specification writers.
• Why it’s used:
  • Establish objective, repeatable test data for MF‑PMC selection and material specifications.
  • Compare materials across suppliers using standardized test methods (ISO 10350‑1 compatibility).
  • Support product qualification, failure analysis and regulatory or contract compliance.
  • Provide consistent inputs for design and moulding process optimization.

Related standards

• ISO 14528‑1 (designation system), ISO 14528‑3 (requirements), ISO 10350‑1 (data presentation)
• ISO 10724‑1/2 (injection moulding of PMCs), ISO 295 (compression moulding), ISO 291 (conditioning)
• Relevant mechanical, thermal and electrical test standards (ISO 527, ISO 178, ISO 179, IEC electrical/flammability methods)

Using EN ISO 14528-2:1999 ensures that MF‑PMC test data are consistent, traceable and suitable for technical specifications, material comparison and reliable product development.