GB 12441-2005Finishing fire retardant paint (English PDF)

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

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.

6.1 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.

7.1 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