ISO 15252-2:1999

ISO 15252-2:1999 - Overview

ISO 15252-2:1999 (Plastics - Epoxy powder moulding compounds (EP‑PMCs) - Part 2) defines standardized procedures for the preparation of test specimens and the determination of material properties for epoxy powder moulding compounds (EP‑PMCs). The standard specifies handling, conditioning and processing requirements for injection and compression moulding, lists relevant test methods and specimen dimensions, and establishes measures needed to obtain reproducible and comparable test results.

Key topics and technical requirements

• Specimen preparation methods
  • Injection moulding in accordance with ISO 10724‑1 / ISO 10724‑2 (melt and mould temperature ranges and process control are specified).
  • Compression moulding in accordance with ISO 295, with defined mould temperature, pressure and cure-time guidance.
  • Machining from moulded plates per ISO 2818 where required.
• Processing parameters (examples from the standard)
  • Injection melt temperature range: 100–110 °C; mould temperature: 160–180 °C; specified injection velocities.
  • Compression moulding mould temperature: 165–175 °C; pressure: 25–40 MPa; cure time guidance (e.g., 20–60 s per mm thickness).
• Conditioning of specimens
  • Method 1: Standard laboratory atmosphere (23 ± 2 °C, 50 ± 5 % RH) for at least 16 hours (ISO 291).
  • Method 2: 24 h in distilled water at ambient temperature, then ISO 291 conditioning (where specified).
• Properties and test methods
  • Mechanical: tensile (ISO 527), flexural (ISO 178), impact (ISO 179 / ISO 8256), tensile‑creep (ISO 899‑1).
  • Thermal and rheological: heat deflection (ISO 75‑2), coefficient of linear thermal expansion (ISO 11359‑2), moulding shrinkage (ISO 2577), torque/flow behavior (ISO 15062).
  • Flammability and electrical tests referenced to relevant IEC standards and ISO test methods.
• Reproducibility requirement
  • Tests must use the same specimen preparation procedure, processing conditions and specimen dimensions to ensure comparable results.

Practical applications

• Enables consistent characterization of EP‑PMC material performance for:
  • Material specification and acceptance testing
  • Quality control in compound manufacture
  • Comparative data for material selection in electrical, automotive and industrial moulding applications
  • R&D and formulation optimization of epoxy powder compounds
• Supports contract testing laboratories and OEMs requiring validated, repeatable test data for design and compliance.

Who should use this standard

• Materials engineers, test laboratories, QC/QA teams, compound formulators, product designers and standards writers working with epoxy powder moulding compounds.

Related standards

• ISO 15252‑1 (designation system and basis for specifications)
• ISO 15252‑3 (requirements for selected moulding compounds)
• ISO 10350‑1, ISO 10724, ISO 295, ISO 291, ISO 2818, relevant IEC flammability and electrical test standards

Keywords: ISO 15252-2, epoxy powder moulding compounds, EP‑PMC, specimen preparation, injection moulding, compression moulding, conditioning, material properties, plastics testing.