GB/T 17037.1-2019 Plastics—Injection moulding of test specimens of thermoplastic materials—Part 1:General principles,and moulding of multipurpose and bar test specimens
This part of GB/T 17037 gives the general principles to be followed when injection moulding specimens of thermoplastic materials and gives details of mould designs for preparing two types of specimen for use in acquiring reference data, i.e. type A1 and type B1 specimens as specified in GB/T 37426, and provides a basis for establishing reproducible moulding conditions. Its purpose is to provide consistent descriptions of the main parameters of the moulding process and to establish a uniform practice in reporting moulding conditions. The particular conditions required for the reproducible preparation of specimens will vary for each material used and are given in the national standard for the relevant material or are to be agreed upon between the interested parties.
This part is applicable to reproducible preparation of multipurpose and bar test specimens by injection moulding of thermoplastic materials.
Note: Interlaboratory tests with acrylonitrile/ butadiene/ styrene (ABS), styrene/ butadiene (SB) and poly methyl methacrylate (PMMA) have shown that mould design is an important factor in the reproducible preparation of specimens.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1043.1 Plastics - Determination of charpy impact properties - Part 1: Non-instrumented impact test (GB/T 1043.1-2008, ISO 179-1: 2000, IDT)
GB/T 17037.3-2003 Plastics - Injection moulding of test specimens of thermoplastic materials - Part 3: Small plates (ISO 294-3: 2002, IDT)
GB/T 17037.4 Plastic - Injection moulding of test specimens of thermoplastic materials - Part 4: Determination of moulding shrinkage (GB/T 17037.4-2003, ISO 294-4: 2001, IDT)
GB/T 37426-2019 Plastics - Test specimens (GB/T 37426-2019, ISO 20753: 2018, MOD)
ISO 294-2 Plastics - Injection moulding of test specimens of thermoplastic materials - Part 2: Small tensile bars
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
Note: ISO and IEC maintain terminological databases for use in standardization at the following addresses:
—— IEC Electropedia: available at http:// www .electropedia .org
—— ISO Online browsing platform: available at http://wwwi.so.org/obp
3.1
mould temperature
TC
average temperature of the mould cavity surfaces measured after the system has attained thermal equilibrium and immediately after opening the mould, ℃
GB/T 17037.1-2019 The following standards are cited：
GB/T 17037.1-2019 Cited by the following standards：
