HG/T 2246-1991 Nitrocellulose Pencil Primer of Various Colors HG/T2246-1991 Standard Download Decompression Password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T 2246—91
Nitrocellulose Primers of Various Colors
Issued on November 12, 1991
Ministry of Chemical Industry of the People's Republic of China
Implementation on July 1, 1992
W Chemical Industry Standard of the People's Republic of China
Nitrocellulose Primers of Various Colors
Subject Content and Scope of Application
HG/T 2246—91
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, storage and transportation of nitrocellulose primers of various colors. This standard applies to wooden pencil shafts, filling and primer coatings. Reference standards: GB1727 GB1735 GB1764 GB3186 GB5208 GB6741 GB6751 General preparation method for paint films Determination of heat resistance of paint films Determination of paint film thickness Sampling of paint products Determination of flash point of paints Rapid equilibrium method Preparation of uniform paint films (rotating paint coater method) Determination of volatile and non-volatile matters in paints and varnishes GB 6753.2
GB9271
GB9273
GB9278
GB9761
Paint surface drying test Small glass ball method
Determination of paint outflow time ISO flow cup method Standard test panel for paints and varnishes
Paint film no mark test
Temperature and humidity for condition adjustment and test of paint samples Visual colorimetry of paints
GB/T13452·1 Determination of total lead content of paints and varnishes Flame atomic absorption spectrometry
3 Technical requirements
The product should meet the technical requirements in the following table.
Paint film color and appearance
Flow time (No. 6 cup), s
Drying time, min
No mark (500g)
Non-volatile matter content, %
Heat resistance (452℃, 30min)
Flash point, ℃
Total lead content, %
Not less than
Not more than
Not less than
Not lower On
Not more thanbzxZ.net
Ministry of Chemical Industry of the People's Republic of China approved on November 12, 1991
Conform to standard sample and its color difference range
Paint film has no cracks
Implemented on July 1, 1992
W.bzsoso:com4 Test method
4.1 General conditions of the test
4.1.1 Sampling shall be carried out in accordance with the provisions of GB3186.
HG/T2246-91
4.1.2 The temperature and humidity of the paint sample state adjustment test shall be carried out in accordance with the provisions of GB9278. 4.1.3 The standard test panels for paints and varnishes shall be prepared in accordance with the provisions of GB9271. 4.1.4 The general preparation of the paint film shall be carried out in accordance with the provisions of GB1727, and the arbitration shall be carried out in accordance with the provisions of GB6741. 4.1.5 The thickness of the paint film shall be measured in accordance with the provisions of GB1764. 4.2 Paint film color and appearance
Evaluate according to GB9761.
4.3 Flow time
Test after diluting the sample with X-1 nitro lacquer thinner at a ratio of 1:1 (m/m) according to GB6753.4. 4.4 Drying time
4.4.1 Surface finish shall be measured according to GB6753.2. 4.4.2 No marks shall be measured according to GB9273. 4.5 Heat resistance
Test according to GB1735.
4.6 Non-volatile content
Measured according to GB6751.
4.7 Flash point
Measured according to GB5208.
4.8 Total lead content
Measured according to GB/T13452.1.
5 Inspection rules
5.1 All technical requirements listed in this standard are type inspection items. Among them, the color and appearance of the paint film, outflow time, drying time, non-volatile content, and heat resistance are factory inspection items. Under normal production conditions, type inspection is carried out once every six months. 5.2 The product shall be inspected by the inspection department of the manufacturer in accordance with the provisions of this standard. The manufacturer shall ensure that all products leaving the factory shall meet the technical requirements of this standard. The product shall have a certificate of conformity, and instructions for use and precautions shall be attached when necessary. 5.3 The receiving department has the right to inspect the product in accordance with the provisions of this standard. If it is found that the quality does not meet the technical indicators of this standard, the supply and demand parties shall jointly re-sample and re-inspect according to GB3186. If it still does not meet the technical indicators of this standard, the product is unqualified and the receiving department has the right to return it.
5.4 The product shall be sampled according to GB3186, and the sample shall be divided into two parts, one of which shall be sealed and stored for one year for future reference, and the other shall be used as an inspection sample. 5.5 The product packaging, quantity and markings shall be checked and verified before leaving the factory. If the packaging is damaged or leaking, the quantity is inconsistent, or the markings do not meet the requirements, they shall be handled in a timely manner. 5.6 When there is a dispute between the supply and demand parties over product quality, the product quality supervision and inspection agency shall perform arbitration inspection. 6 Packaging marking
Perform in accordance with GB9750.
7 Packaging, purchase, storage and transportation
7.1 The product shall be stored in a clean, dry and sealed container, with the filling amount not exceeding 95% of the volume. When storing the product, it shall be kept ventilated and dry, and prevent direct sunlight exposure. It shall be isolated from fire and heat sources. When the temperature is too high in summer, it shall be cooled down. 2
W.HG/T2246—91
7.2 When transporting the product, it shall be protected from rain and sunlight exposure, and shall comply with relevant regulations. 7.3 The product has an effective storage period of one year from the date of production under the storage conditions in accordance with 7.1 and 7.2. 7.4 After the storage period, it can be inspected according to this standard and can still be used if the results meet the requirements. 3 Safety and health regulations
This paint contains nitrocellulose and organic solvents such as esters, ketones, and alcohols. It is a flammable liquid and has certain toxicity. Attention should be paid to ventilation, fire prevention, anti-static, and poisoning prevention measures should be taken at the construction site, and the safety regulations and relevant regulations for coating operations should be followed. 3
WW.bzsoso.cOmHG/T2246—91
Appendix A
Construction reference
(reference)
A1 The surface of the object to be coated needs to be treated in advance to increase the adhesion and durability of the coating film. It should be constructed according to the pencil paint construction process, and the thinner can be X-1 nitro paint thinner. A2
When the humidity is high on rainy days and the paint film turns white, in addition to adding a small amount of F-1 nitro paint moisture-proofing agent, you can also appropriately increase the indoor temperature and exhaust air A3
Solve it.
A4Supporting varieties: Q20-1 nitro pencil varnish; Q20-3 nitro pencil varnish; Q20-35 various nitro pencil varnishes. Additional remarks:
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Paints and Pigments. This standard was drafted by Harbin Paint Factory.
The main drafters of this standard are Zhang Bingli and Yang Mingyu. 4
W.
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