Some standard content:
Chemical Industry Standard of the People's Republic of China
HG2240-91
Published on November 12, 1991
Polyurethane Varnish
Implemented on July 1, 1992
Ministry of Chemical Industry of the People's Republic of China
WChemical Industry Standard of the People's Republic of China
1 Subject Content and Scope of Application
Polyurethane Varnish
HG/T2240-91
This standard specifies the technical requirements, test methods, inspection rules, and packaging, marking, storage and transportation of S01-4 polyurethane varnish. This product is used for wood decoration, metal protection and wooden boat hull protection. This product has excellent adhesion, hardness, gloss and other characteristics. It is easy to apply and has little irritation.
2 Reference standards
GB1721
GB1722
GB1727
GB1728
GB1764
GB3186
GB5208
GB6682
GB6739
GB6742
GB6751
Qing Determination of appearance and transparency of varnish, clear oil and thinner Determination of color of varnish, clear oil and thinner General preparation of paint film
Determination of drying time of paint film and putty film
Determination of paint film thickness
Sampling of paint products
Determination of flash point of paint
Quick balance method
Specification of water for laboratory
Determination of hardness of coating film by pencil
Bending test of coating film (cylindrical axis ）
Determination of volatile and non-volatile matters in paints and varnishes GB6753.4 Determination of coating outflow time
ISO flow cup method
GB9271
GB9274
GB9278
GB9286
GB9750
GB9754
GB9761
3 Technical requirements|| tt||Standard test panels for paints and varnishes
Determination of resistance of paints and varnishes to liquid media
Temperature and humidity for condition adjustment and testing of coating specimensScratching test on paint and varnish films
Packaging marking of paint products
Determination of specular gloss at 20°, 60° and 85° of paint films without metallic pigmentsVisual colorimetry of paints
The products should meet the technical requirements in the following table.
Appearance and transparency of original paint
Color of original paint, number
Appearance of paint film
Approved by the Ministry of Chemical Industry of the People's Republic of China on November 12, 1991, not more than
Transparent, free of mechanical impurities
Paint film is smooth and bright
Implementation on July 1, 1992
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Viscosity, s
Solid content, %
Drying time, h
Flexibility, mm
Adhesion, grade
Water resistance (24h)
Flash point, ℃
Test method
4.1 Appearance and transparency of original paint
According to GB1721.
4.2 Original paint color
According to GB1722.
4.3 Appearance of paint film
According to GB9761.
4.4 Viscosity
According to No. 6 cup in GB6753.4.
4.5 Solid content
According to GB6751.
4.6 Drying time
According to Method A in GB1728.
4.7 Hardness
According to GB6739.
4.8 Flexibility
According to GB6742.
4.9 Adhesion
According to GB9286, without tape.
4.10 Gloss
Measured at 60° according to GB9754.
4.11 Water resistance
HG/T2240—91
Not less than
Not less than
Not greater than
Not greater than
Not less than
Not less than
Not less than
Not less than
According to Article 5 of GB9274, distilled water should meet the requirements of Grade 3 water in GB6682. 4.12 Flash point
According to GB5208.
4.13 General conditions for testing
No blistering or sheddingbzxz.net
W.bzsoso.cOm4.13.1 Sampling: According to GB3186.
4.13.2 Plate making method: According to GB1727. 4.13.3 Standard test plate: According to GB9271. HG/T2240-91
4.13.4 The environmental regulations for treatment and testing shall be carried out in accordance with GB9278. 4.13.5 The thickness of the paint film shall be measured in accordance with GB1764. 5 Inspection rules
5.1 All the technical requirements listed in this standard are type inspection items. Except for the flash point, the other items are factory inspection items. Under normal production conditions, type inspection shall be carried out at least once a year. 5.2 The products 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 shipped meet the technical requirements of this standard. The products shall have a certificate of conformity and, if necessary, instructions for use and precautions. 5.3 The receiving department has the right to inspect the products 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 in accordance with GB3186. If it still does not meet the technical requirements of this standard, the product is unqualified and the receiving department has the right to return it.
5.4 Products shall be sampled in accordance with GB3186. The samples shall be divided into two parts, one of which shall be sealed and stored for future reference, and the other shall be used as a sample for inspection. 5.5 When there is a dispute between the supply and demand parties over product quality, the product quality supervision and inspection agency shall conduct arbitration. 5.6 Both the supply and demand parties shall inspect and verify the product packaging, quantity and marking. If the packaging is damaged or leaking, the quantity is inconsistent, or the marking does not meet the requirements, it shall be deemed unqualified. 6 Packaging, marking, purchase, storage and transportation
6.1 Packaging marking
According to GB9750.
6.2 Packaging, storage and transportation
6.2.1 Products shall be stored in clean, dry and sealed containers. When storing products, they shall be kept ventilated and dry, prevent direct sunlight, and isolate them from fire sources. When the temperature is too high in summer, they shall try to cool down. 6.2.2 When transporting products, they shall be protected from rain and sunlight, and shall comply with the relevant regulations of the transportation department. 6.2.3 If the product complies with the storage and transportation conditions of 6.2.1 and 6.2.2, the effective storage period is one year from the date of production. 3
W.bzsoso.cOmHG/T2240—91
Appendix A
Construction reference
(reference)
A1 Brushing, spraying, pouring and dipping are all possible. During construction, the viscosity can be adjusted with No. 200 paint solvent oil. A2
A3 When brushing or spraying on the wood surface or the metal surface coated with primer, each coating should be 15~20um (dry film), and the next coat can be applied only after the previous coat is dry.
To prevent the paint from crusting on the surface during use, when the remaining paint is not used temporarily, the surface can be covered with a small amount of No. 200 paint solvent oil. A4
Additional Notes:
This standard was proposed by the Department of Science and Technology 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 Tianjin Lihua Color Material Factory. The main drafters of this standard are Hei Xuguang, Yang Shuiwang, Feng Zhaofeng, 4
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