Skip to product information
1 of 12

PayPal, credit cards. Download editable-PDF and invoice in 1 second!

GB/T 19208-2008 English PDF (GBT19208-2008)

GB/T 19208-2008 English PDF (GBT19208-2008)

Regular price $90.00 USD
Regular price Sale price $90.00 USD
Sale Sold out
Shipping calculated at checkout.
Quotation: 24-hr self-service. Click GB/T 19208-2008
See Chinese contents: GB/T 19208-2008

GB/T 19208-2008: Ground vulcanized rubber

This Standard specifies the classification, technical requirements, test methods, inspection rules, packaging, marks, storage, and transportation requirements of ground vulcanized rubbers that are extracted from various recycled vulcanized rubbers.
GB/T 19208-2008
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 83.040.01
G 48
Replacing GB/T 19208-2003
Ground vulcanized rubber
???????????????
ISSUED ON. MAY 14, 2008
IMPLEMENTED ON. OCTOBER 01, 2008
Issued by.
General Administration of Quality Supervision, Inspection
and Quarantine of the PEOPLE Republic of China;
Standardization Administration of the PEOPLE Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Classification ... 6
5 Requirements ... 6
6 Test methods ... 8
7 Inspection rules ... 15
8 Packaging, mark, storage, and transportation ... 15
Annex A ... 17
Foreword
This Standard is corresponding to ASTM D 5603.2001 ?€?Standard Classification for Rubber Compounding Materials - Recycled Vulcanized Particulate Rubber?€?. The consistent degree is not equivalent.
The main differences between ASTM D 5603.2001 and this Standard are as follows. ?€? ADD the terms and definitions;
?€? The ground vulcanized rubber is divided into three categories according to the category and special purpose of rubber products.
1) Ground vulcanized rubber of whole tire, which is divided into 2 series according to the structure. radial tire and diagonal tire;
2) Non-tire ground vulcanized rubber, which is divided into 4 series according to the texture. butyl rubbers, nitrile rubber, ethylene propylene diene monomer rubber, and polyurethane rubber;
3) Ground vulcanized rubber of road modified asphalt, which is divided into 2 series according to the application. all-steel radial tire and other tires. ?€? ADD the requirements for the content of harmful substances and the
determination methods of harmful substances;
?€? DELETE the mechanical screening method for residues on sieve in the original edition;
?€? ADD the determination of tensile strength and elongation at break;
?€? DELETE ?€?vulcanization flat band method?€? in the density determination items. This Standard replaces GB/T 19208-2003 ?€?Ground vulcanized rubber?€?.
Compared with GB/T 19208-2003, the main changes of this Standard are as follows. ?€? ADD the safety statement;
?€? ADJUST the normative references (see Chapter 2);
?€? ADD the terms and definitions (Annex A of this edition);
?€? RE-CLASSIFY ground vulcanized rubbers (Table 1 of this edition);
?€? MODIFY and add some technical indexes and requirements (Table 2 and Table 3 of this edition);
?€? ADD the requirements for the content of harmful substances and the
determination methods of harmful substances (5.4 and 6.1.5 of this edition); ?€? CHANGE the inspection item of ?€?moisture mass fraction?€? to ?€?heating loss?€? (see 6.1.1);
?€? MODIFY the determination method of residues on sieve; DELETE the
mechanical screening method in the determination of residues on sieve (6.2.1 of this edition);
?€? ADD the calculation equations of acetone extracts, residues on sieve, ferric content, and fiber content (6.1.3, 6.2.1.3, 6.2.2, and 6.2.3 of this edition); ?€? CHANGE ?€?determination of injection density?€? to ?€?determination of volume density?€? and specify the determination methods (6.2.4 of this edition); ?€? ADD the plasticating conditions of natural rubbers; CHANGE the roller temperature of ?€?40 ?? 5??C?€? to ?€?(50 ?? 5)??C?€? (Table 6 of this edition);
?€? MODIFY the vulcanizing time of samples (6.2.6.1 of this edition);
?€? MODIFY the inspection rules (Chapter 7 of this edition).
The Annex A of this Standard is normative.
This Standard was proposed by China Petroleum and Chemical Industry Association. This Standard shall be under the jurisdiction of China National Technical Committee for the Standardization of Rubber and Rubber Products (SAC/TC 35).
Responsible drafting organization of this Standard. Tianjin Rubber Industry Institute. Participating drafting organizations of this Standard. Shenyang Rubber Research and Design Institute of China Rubber Group, Jiangsu Yanning Jinbang Technology Development Co., Ltd., Jiangxi Yazhong Rubber Plastic Co., Ltd., and Jiangsu Jiangyin Tailian Superfine Rubber Powder Factory.
Main drafters of this Standard. Li Zian, Zheng Jiangong, Liu Huichun, Long Xiang, Luo Yazhong, and Xue Fengqing.
The historical version replaced by this Standard is as follows.
?€? GB/T 19208-2003.
Ground vulcanized rubber
Warning ?€? Anyone who uses this Standard shall have working experience in professional laboratory. This Standard does not cover all the possible safety problems. Users have responsibilities to take suitable safety and health measures, which shall be ensured that they are conform to the conditions specified in the relevant national laws and regulations.
1 Scope
This Standard specifies the classification, technical requirements, test methods, inspection rules, packaging, marks, storage, and transportation requirements of ground vulcanized rubbers that are extracted from various recycled vulcanized rubbers.
This Standard is applicable to the ground vulcanized rubbers of different particle diameters which are made from various vulcanized rubbers according to the process conforming to the national economic recycling requirements.
2 Normative references
The provisions in following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this Standard, however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. 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, 150 2393.1994, MOD)
GB/T 8089-2007 Raw natural rubber - Smoked sheet, 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
The terms and definitions defined in Annex A are applicable to this Standard. 4 Classification
The ground vulcanized rubbers are classified according to the category of materials used and the special purposes of ground rubbers; the method is shown in Table 1. Table 1 Classification of ground vulcanized rubbers
Class Code Material used
Ground vulcanized rubber
of whole tire
A1 Radial tire which has no use value
A2 Diagonal tire which has no use value
Ground vulcanized rubber
of non-whole-tire
B1 Butyl rubber product which has no use value
B2 Nitrile rubber product which has no use value
B3 Ethylene propylene rubber product which has no use value
B4 Polyurethane rubber product which has no use value
Ground rubber for road
modified asphalt a
C1 All-steel radial tire which has no use value
C2 Other tires which have no use value
a Ground vulcanized rubber of road modified asphalt is only applicable to the paving of pavement layer and stress-absorbing waterproof interlayer of road.
5 Requirements
SJ/T 11365-2006. ADOPT XRF power-spectral method. The device used is X-ray fluorescence analyzer. For sampling method, directly measure the sample (do not destroy the sample). The test range covers lead (Pb), mercury (Hg), and cadmium (Cd).
6.1.5.2 Determination of polybrominated diphenyl (PBB) and polybrominated diphenyl ether (PBDE) contents
DETERMINE the contents of polybrominated diphenyl (PBB) and polybrominated diphenyl ether (PBDE) according to the specifications of Chapter 6 in SJ/T 11365-2006. ADOPT gas chromatography-mass spectrum (GC-MS) method and
selective ion monitoring mode (SIM).
6.1.5.3 Determination of hexavalent chromium (Cr6+) content
DETERMINE the content of hexavalent chromium (Cr6+) according to the
specifications of 8.2 in SJ/T 11365-2006. ADOPT colorimetric method.
6.2 Physical tests
6.2.1 Determination of residues on sieve
6.2.1.1 Sieve
The standard sieve to screen ground vulcanized rubbers is made of stainless steel or brass. The diameter of standard sieve is 200 mm. The sieve is selected according to R20 series mesh size method in GB/T 5330-2003.
6.2.1.2 Test procedures
USE th...

View full details