GB/T 6594.1-2025 Active National standards

GB/T 6594.1-2025 Plastics—Polystyrene(PS) moulding and extrusion materials—Part 1:Designation system and basis for specifications

Publish Date: 2025-01-24 Implement Date: 2025-08-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 6594.1-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Thermoplastic plastics

Publish Date: 2025-01-24

Implement Date: 2025-08-01

Pages: 16 pages

Scope

This document specifies a naming system for polystyrene (PS) thermoplastic materials, which serves as the basis for classification.
Different types of polystyrene (PS) thermoplastic materials are distinguished by a classification system based on the values of specified characteristic properties, as well as their recommended applications and/or processing methods, important performance characteristics, additives, colorants, fillers, and reinforcing materials:
a) Vicat softening temperature;
b) Melt mass flow rate.
This document applies to all amorphous polystyrene homopolymers. It applies to materials in conventional forms such as powders, granules, or crushed particles, whether unmodified or modified with colorants, additives, fillers, etc.
This document does not apply to expandable polystyrene, styrene copolymers, homopolymers of styrene derivatives, or polystyrene products modified with other polymers (such as elastomers).
This document does not imply that materials with the same name must have the same performance. It does not provide the engineering data, performance data, or processing condition data required to describe the special applications and/or processing methods of materials. If necessary, these additional properties can be determined using the test methods specified in GB/T 6594.2.