GB/T 39955-2021Additive manufacturing—Materials—Powders of Nylon 12 and its composites for powder bed fusion (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

1 Scope

This document specifies the naming rules, technical requirements, test methods, inspection rules, and standards for nylon 12 and its composite powders for powder bed melting.

The contents of the log, packaging, transportation, storage and quality certificate, supply contract (or purchase order).

This document is applicable to nylon 12 powder for powder bed melting, glass bead-reinforced nylon 12 composite powder, and carbon fiber-reinforced nylon.

Long 12 composite powder, aluminum powder reinforced nylon 12 composite powder and mineral fiber reinforced nylon 12 composite powder, other nylon 12 composite powder You can refer to this document at the end.

Note: The nylon 12 composite powder mentioned in this document includes the powder that is compounded between particles, that is, in the powder state, the compound between particles and particles or between particles and fibers.

It also includes the powder compounded within the particle, that is, the powder prepared after the compounding of the raw materials (a single particle is a compound powder).

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 250 Gray Sample Card for Textile Color Fastness Test to Evaluate Discoloration

GB/T 1033.1 Determination of the density of plastic non-foam plastics Part 1: Immersion method, liquid pycnometer method and titration method

GB/T 1040.2 Determination of tensile properties of plastics Part 2: Test conditions for molding and extrusion plastics

GB/T 1634.1 Determination of Deflection Temperature of Plastics under Load Part 1: General Test Method

GB/T 1843 Determination of impact strength of plastic cantilever beam

GB/T 2913 Test method for whiteness of plastics

GB/T 3682.1 Determination of Melt Mass Flow Rate (MFR) and Melt Volume Flow Rate (MVR) of Plastic Thermoplastics Part 1: Standard Method

GB/T 9341 Determination of bending properties of plastics

GB/T 14234 Surface roughness of plastic parts

GB/T 16913 Dust physical properties test method

GB/T 19077 Particle Size Analysis Laser Diffraction Method

GB/T 19466.3 Differential Scanning Calorimetry (DSC) for Plastics Part 3: Determination of Melting and Crystallization Temperature and Enthalpy

GB/T 35351 Terminology for Additive Manufacturing

GB/T 37463-2019 Specification for powder bed melting process of additive manufacturing plastic materials

3 Terms and definitions

The following terms and definitions defined in GB/T 35351 are used in this document. For ease of use, GB/T 35351 is repeatedly listed below Some terms and definitions in.