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GB 12441-2005 English PDF (GB12441-2005)

GB 12441-2005 English PDF (GB12441-2005)

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GB 12441-2005: Finishing fire retardant paint

This Standard specifies the terms and definitions, technical requirements, test methods, inspection rules, marks and packaging of finishing fire retardant paint.
GB 12441-2005
GB
NATIONAL STANDARD OF
THE PEOPLE REPUBLIC OF CHINA
Replacing GB 12441-1998, GB 15442.1-1995, GB/T 15442.2-1995, GB/T
15442.3-1995, GB/T 15442.4-1995
Finishing fire retardant paint
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ISSUED ON. NOVEMBER 30, 2005
IMPLEMENTED ON. MAY 1, 2006
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration Committee.
3. No action is required - Full-copy of this standard will be automatically and immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Technical requirements ... 6
5 Test methods ... 7
6 Inspection rules ... 8
7 Marks, instructions for use ... 9
8 Packaging, transport and storage ... 10
Annex A (Normative) Big panel combustion method ... 11
Annex B (Normative) Tunnel combustion method ... 17
Annex C (Normative) Chamber combustion method ... 22
Foreword
4.2 of this Standard is mandatory; the rest are recommendatory.
This Standard replaces GB 12441-1998 General technical specifications for finishing fire retardant paint, GB 15442.1-1995 Classification and test methods for fire retardant of finishing fire retardant paints - Classification for fire retardancy, GB/T 15442.2-1995 Classification and test methods for fire retardant of finishing fire retardant paints - Big panel method, GB/T
15442.3-1995 Classification and test methods for fire retardancy of finishing fire retardant paints - Tunnel method, GB/T 15442.4-1995 Classification - Test methods for fire retardancy of finishing fire retardant paints - Cabinet method. Compared with GB 12441-1998, GB 15442.1-1995, GB/T 15442.2-1995,
GB/T 15442.3-1995, GB/T 15442.4-1995, the modifications in this Standard are as follows.
- this Standard merged the technical contents of five standards;
- this Standard added Annex A, Annex B, Annex C;
- deleted the grade classification of finishing fire retardant paint
performance;
- modified the number of temperature measurement point of specimen
backfire surface in big panel method from one to five.
Annex A, Annex B, Annex C of this Standard are normative.
This Standard was proposed by Ministry of Public Security of the People 's Republic of China.
This Standard shall be under the jurisdiction of the Seventh Committee of National Technical Committee on Fire Protection of Standardization
Administration of China (SAC/TC 113 / SC 7).
Main drafting organization of this Standard. Ministry of Public Security Sichuan Fire Research Institute.
The drafting organizations of this Standard. Sichuan Tianfu Fireproof Material Co., Ltd., Hangzhou Xizi Fireproof Material Co., Ltd., Kunshan Fireproof Materials Co., Ltd.
Main drafters of this Standard. Cheng Daobin, Li Feng, Zhang Cai, Feng Jun, Zhang Qingming, Ding Chunfu, Qiu Ludao.
Versions of standard substituted by this Standard are.
Finishing fire retardant paint
1 Scope
This Standard specifies the terms and definitions, technical requirements, test methods, inspection rules, marks and packaging of finishing fire retardant paint.
2 Normative references
The following standards contain the provisions which, through reference in this Standard, constitute the provisions of this Standard. For dated references, subsequent amendments (excluding corrections) or revisions do not apply to this Standard. However, the parties who enter into agreement based on this Standard are encouraged to investigate whether the latest versions of these documents are applicable. For undated reference documents, the latest
versions apply to this Standard.
GB/T 1720, Method of test for adhesion of paint films
GB/T 1724, Methods of test for fineness of grind of paints
GB/T 1727, General preparation of paint film
GB/T 1728-1989, Paint film, putty film drying time determination method GB/T 1731, Determination of flexibility of films
GB/T 1732, Determination of impact resistance of paint film
GB/T 1733-1993, Determination of resistance to water of films
GB/T 1740, Methods of test for resistance to heat and humidity of paint films
GB/T 3181, Color standard for paint film
GB 3186, Paints varnishes and raw materials for paints and varnishes -
Sampling
GB 9969.1, General principles for preparation of instructions for use of industrial products
Carry out according to the method specified in GB/T 1724.
5.7 Drying time
Carry out according to the method specified in GB/T 1728-1998 (Method A). 5.8 Adhesion
Carry out according to the method specified in GB/T 1720.
5.9 Flexibility
Carry out according to the method specified in GB/T 1731.
5.10 Impact resistance
Carry out according to the method specified in GB/T 1732.
5.11 Water resistance
Carry out according to the method specified in GB/T 1733-1993 (Method A). 5.12 Resistance to dampness
Carry out according to the method specified in GB/T 1740.
5.13 Flame resistance time
Carry out according to the method specified in Annex A.
5.14 Flame propagation ratio
Carry out according to the method specified in Annex B.
5.15 Carbonized volume
Carry out according to the method specified in Annex C.
5.16 Mass loss
Carry out according to the method specified in Annex C.
6 Inspection rules
6.1 Sampling
When sampling, refer to the provisions of GB 3186, i.e., (N - total
number of barrels, n - number of sample barrels), n ??? 2, confirm the number of sample barrels and randomly extract sample. The paint shall be stirred even before sampling, and the same amount (obtained by calculation) is
taken from the sample barrel. After even mixing, put into the sample holding container. There shall be 5% ~ 10% gap in the container. The batch number of samples extracted shall not be less than 1 t, the number of samples
extracted not less than 10 kg.
6.2 Exit-factory inspection item
The exit-factory inspection items include the state in container, fineness, drying time, adhesion, impact resistance, water resistance, resistance to dampness and flame resistance time.
6.3 Type inspection item
The type inspection items are all technical items specified in Table 1. Type inspection shall be performed in one of the following situations.
a) production for new product or old product produced in transferred plant; b) significant changes in product structure, technique and raw material; c) production resumed after discontinued production of more than one
year;
d) significant difference between exit-factory inspection results and
previous type inspection results;
e) normal production for 3 years or cumulated to 300 t.
6.4 Determination principle
6.4.1 Exit-factory inspection
The results of exit-factory inspection shall meet the technical requirements specified in Table 1. Carry out the re-inspection twice via sampling from same batch of samples for rejected inspection items. It shall only leave factory after two re-inspections are accepted.
6.4.2 Type inspection
See Table 1 for defect classification of type inspection items. The qualification determination principle for product quality is. A=0, B???1, B+C???2.
7 Marks, instructions for use
7.1 The packaging mark of product include the following information.
A.2.4 Fuel
The fuel is made of liquefied petroleum gas or natural gas.
A.2.5 Laboratory
The laboratory is divided into combustion chamber and control room. There is observation window between the two rooms. The length, width and height of the combustion chamber are limited to 3 m to 4.5 m. The distance from the test stand to any part of the wall shall not be less than 900 mm. During testing, there shall be no external air interference.
A.3 Preparation of specimen
A.3.1 Substrate selection and size
The laboratory substrate and size test substrate shall be class one five-layer plywood. The substrate thickness is 5 mm ?? 0.2 mm and the test board size is 900 mm ?? 900 mm. The surface shall be flat and smooth, and ensure that
there must be no patchwork and knots within the plane where one side of test board is 250 mm from the center.
A.3.2 Coating ratio
The specimen shall be single coated with a wet coating ratio of 500 g/m2 and a coating error is ?? 2% of the specified value. For sub-coating, the interval between the two coatings shall not be less than 24 h.
A.3.3 State conditioning
After coated with the finishing fire retardant paint, the specimen shall be conditioned to constant mass at a temperature of (23 ?? 2)??C, a relative humidity of (50 ?? 5)% (the interval shall be 24 h and the mass change of two weighing shall not exceed 0.5%).
A.4 Test procedure
A.4.1 Check whether the thermocouple and the computer system are
working properly.
A.4.2 Place the specimen with adjusted constant mass on the test stand
horizontally. Make the face coated with fire retardant pain...

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