GB/T 29645-2013 in English

《GB/T 29645-2013塑料 聚苯乙烯再生改性专用料》由TC15（全国塑料标准化技术委员会）归口，TC15SC10（全国塑料标准化技术委员会改性塑料分会）执行，主管部门为中国石油和化学工业联合会。
本标准规定了聚苯乙烯再生改性专用料的分类与命名、要求、试验方法、检验规则、标志、包装、运输和贮存。
本标准适用于以回收聚苯乙烯类材料为主要成分,通过改性得到的增韧、阻燃聚苯乙烯再生改性专用料。

1 Scope

This standard specifies the classification and designation, requirements, test methods, inspection rules, marking, packaging, transportation and storage of recycled polystyrene compound.

This standard is applicable to the recycled polystyrene compound which is toughening and flame-retardant by modification and mainly composed of recycled polystyrene.

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 1033.1-2008 Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion method liquid pyknometer method and titration method
GB/T 1040.2-2006 Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and extrusion plastics
GB/T 1634.2-2004 Plastics — Determination of temperature of deflection under load — Part 2: Plastics, ebonite and long-fibre-reinforced composites
GB/T 1843 Plastics — Determination of izod impact strength
GB/T 1844.1 Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special characteristics
GB/T 2035 Terms and definitions for plastics
GB/T 2547 Plastic resins — Sampling
GB/T 2918 Plastics — Standard atmospheres for conditioning and testing
GB/T 3682-2000 Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics
GB/T 5169.16 Fire hazard testing for electric and electronic products — Part 16: Test flames — 50 W horizontal and vertical flame test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 9341 Plastics — Determination of flexural properties
GB/T 17037.1-1997 Injection moulding of test specimens of thermoplastic materials — Part 1: General principles and moulding of multipurpose and bar test specimens
GB/T 18964.2-2003 Plastics — Impact-resistant polystyrene (PS-I) moulding and extrusion materials — Part 2: Preparation of test specimens and determination of properties
GB/T 26125 Electrical and electronic products — Determination of six regulated substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers)
GB/T 26572 Requirements of concentration limits for certain restricted substances in electrical and electronic products
SH/T 1541 Test method for appearance of thermoplastic granules

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 2035 and the following apply.

3.1
polystyrene
polymers made from styrene
[GB/T 2035, definition 2.760]

Foreword i
Introduction ii
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and designation
5 Requirements
6 Test methods
7 Inspection rules
8 Marking
9 Packaging, transportation and storage
Annex A (Normative) Classification and designation