GB/T 19208-2008 Ground vulcanized rubber
Warning – Persons using this standard shall be familiar with normal laboratory practice. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions.
1 Scope
This standard specifies the classification, technical requirements, test methods, and inspection rules, as well as requirements for packaging, marking, storage and transport of ground vulcanized rubber produced from various recycled vulcanized rubbers.
This standard is applicable to ground vulcanized rubber of different particle sizes, which is manufactured from various vulcanized rubber materials with processes in accordance with the national requirements for circular economy.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this standard. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the referenced document applies.
GB/T 528 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties (GB/T 528-1998, eqv ISO 37: 1994)
GB/T 2449-2006 Sulfur for industrial use
GB/T 2941 Rubber - General procedures for preparing and conditioning test pieces for physical test methods (GB/T 2941-2006, ISO 23529: 2004, IDT)
GB/T 3185-1992 Zinc oxide (indirect method)
GB/T 3516-2006 Rubber - Determination of solvent extract (ISO 1407: 1992, MOD)
GB/T 4498-1997 Rubber - Determination of ash (eqv ISO 247: 1990)
GB/T 5330-2003 Industrial woven metal wire cloth (square opening series)
GB/T 6038 Rubber test mixes - Preparation, mixing and vulcanization - Equipment and procedures (GB/T 6038-2006, ISO 2393: 1994, MOD)
GB/T 8089-2007 Raw natural rubber - Smoked sheets, white crepes and pale crepes
GB/T 8829-2006 Vulcanizing accelerator NOBS (ISO 11235: 1999, NEQ)
GB/T 9103-1988 Industrial stearic acids
GB/T 11407-2003 Vulcanizing accelerator M
GB/T 14837-1993 Rubber and rubber products－Determination of composition by thermogravimetry
SJ/T 11365-2006 Testing methods for hazardous substances in electronic information products
3 Terms and definitions
For the purposes of this standard, the terms and definitions given in Annex A apply.
4 Classification
The ground vulcanized rubber is classified based on the type of raw materials used and the special purpose of ground rubber. The classification method is shown in Table 1.
Table 1 Classification of ground vulcanized rubber
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Requirements
6 Test methods
7 Inspection rules
8 Packaging, marking, storage and transport
Annex A (Normative) Terms and definitions
