GB/T 9756-2018Synthetic resin emulsion coatings for interior wall (English PDF)

Foreword

This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This Standard replaces GB/T 9756-2009, Synthetic resin emulsion coatings for

interior wall. Compared with GB/T 9756-2009, the major technical changes, in addition

to editorial changes, are as follows.

-- Change the scope of the standard (see Clause 1; Clause 1 of 2009 edition);

-- Delete the normative references including "GB/T 1250 and JC/T 412.1-2006" (see

Clause 2 of 2009 edition);

-- Add the normative references including "GB/T 6682-2008, GB/T 8170-2008 and

GB/T 23981-2009" (see Clause 2);

-- Add the items, indexes and test methods of low-temperature film-forming

properties of primers and finishes (see 4.1, 4.2 and 5.5.5);

-- Change the technical indexes of scrub resistance of film of finishes. the qualified

product's acceptance index of scrub resistance of film of finishes is changed from

">= 300 times" into ">= 350 times", the first-class product's index is changed from ">=

1000 times" into "1,500 times" and superior product's index is changed from ">=

5,000" into ">= 6,000" (see 4.2; 4.2 of 2009 edition);

-- Add the specifications of waterproof abrasive paper used for substrate polishing

and the inspection method for substrate flatness for the item of scrub resistance

of film (see 5.3);

-- Change the contents including wet-film thickness, sample density and unit of test

panel area in the calculation equation of primer brushing amount (see 5.4.2.1;

5 of 2009 edition);

-- Add the requirements for brushes during the arbitration test for the item of scrub

resistance of film (see 5.5.11);

-- Add the processing requirements, when the PVA water solution for the item anti-

efflorescence has aggregation, precipitation, etc. during storage (see A.1.1.1;

A.1.1.1 of 2009 edition);

-- Change the storage period of the PVA-iron blue water dispersion liquid, from "not

exceeding 1 month" into "not exceeding 15 d" (see A.1.1.2; A.1.1.2 of 2009 edition);

-- Change the height of the test solution immersion test panels for the item of anti-

efflorescence, from "greater than 1/2 of the test panel thickness" into "greater than

2/3 of the test panel thickness" (see A.3.2; A.3.2 of 2009 edition).

This Standard was proposed by the China Petroleum and Chemical Industry

Association.

This Standard shall be under the jurisdiction of National Technical Committee 5 on

Paints and Pigments of Standardization Administration of China (SAC/TC 5).

The drafting organizations of this Standard. CNOOC Changzhou Paint Chemical

Research Institute, Dow Chemical Company (China) Investment Co., Ltd., ICI Swire

Paints (Shanghai) Co., Ltd., Nippon Paint (China) Co., Ltd., Shanghai Research

Institute of Paint and Coatings Co., Ltd., Guangdong Carpoly Technological Materials

Co., Ltd., Foshan Shunde District BATF Industrial Co., Ltd., Guangdong Huarun Paints

Co., Ltd., 3trees Paint Co., Ltd., Guangdong Bardese Chemical Co., Ltd., Zhejiang

Huade New Materials Co., Ltd., Shenzhen Grandland Environmental Protection Paint

Co., Ltd., Caparol (China) Co., Ltd., Hebei Tianxin Construction Group Co., Ltd., First

New Material Technology Development Co., Ltd., Zhanchen New Material Group Co.,

Ltd., Zhejiang Transfar Paint Co., Ltd., China Paint MFG (Shenzhen) Co., Ltd., Hebei

Chenyang Industry and Trade Group Co., Ltd., Ningbo Xinan Coating Co., Ltd.,

Shandong Lehua Paint Industry Co., Ltd., Alligator Paint (Shanghai) Co., Ltd.,

Northwest Yongxin Paint Co., Ltd., DMT Production (Beijing) Co., Ltd., Bauhinia

Coatings (Shanghai) Co., Ltd., BASF New Materials Co., Ltd., Jiangsu Elephant

Coating Co., Ltd., Maco Group Co., Ltd., Kansai Paint (China) Investment Co., Ltd.,

Antext Chemical (Zhongshan) Co., Ltd., Xiang Jiang Paint Technology Co., Ltd.,

Shanghai Jianke Technical Assessment of Construction Co., Ltd.

1 Scope

This Standard specifies the classification and grading, requirements, test methods,

inspection rules and marking, packaging and storage, etc. for synthetic resin emulsion

coatings for interior wall.

This Standard applies to coatings for interior wall, including primers and finishes, which

is based on synthetic resin emulsion, prepared with pigments, body pigments and all

kinds of auxiliaries and forms a thin coating layer with a smooth surface after

application.

2 Normative references

The following referenced documents are indispensable for the application of this

document. For dated references, only the edition dated applies to this document. For

undated references, the latest edition of the referenced documents (including all

amendments) applies to this document.

GB/T 1728-1979, Methods of test for drying time of coatings of paints and putties

GB/T 1766-2008, Paints and varnishes - Rating schemes of degradation of coats

GB/T 1910, Newsprint

GB/T 3186, Paints, varnishes and raw materials for paints and varnishes -

Sampling

GB/T 6682-2008, Water for analytical laboratory use - Specification and test

methods

GB/T 6750-2007, Paints and varnishes - Determination of density - Pycnometer

method

GB/T 8170-2008, Rules of rounding off for numerical values and expression and

judgement of limiting values

GB/T 9265-2009, Determination for alkali resistance of film of architectural paints

and coatings

GB/T 9266-2009, Determination of scrub resistance of film of architectural paints

and coatings

3 Classification and grading

Synthetic resin emulsion coatings for interior wall are classified into primers and

finishes in this Standard. Finishes are graded into qualified products, first-class

products and superior products in accordance with the requirements for use.

4 Requirements

5 General requirements

6 Inspection rules

7 Marking, packaging and storage