HG/T 2362-1992 Nomenclature of polyoxymethylene molding materials HG/T2362-1992 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
Nomenclature of polyoxymethylene molding materials
Subject content and scope of application
This standard specifies the naming method of polyoxymethylene molding materials. This standard applies to the classification and naming of polyoxymethylene molding materials. HG 236292
Polyoxymethylene molding materials are classified and named according to their chemical composition, melt flow rate and filler or reinforcement material or additives and the mass basis of filler or reinforcement material.
2 Reference standards
GB1844 Plastics and resins abbreviation code
GB3682 Thermoplastic melt flow rate test method 3 Naming method
The naming method of polyoxymethylene molding materials consists of abbreviation code and model. 3.1 Abbreviation code
The abbreviation code of polyoxymethylene is represented by the English letters POM according to GB1844. 3.2 Model
POM molding material model includes the following contents: Chemical composition
Melt flow rate
Type of filler or reinforcement material or additive
Shape of filler or reinforcement material
Mass fraction of filler or reinforcement material
3.2.1 Polyoxymethylene is divided into two categories according to its chemical composition: homopolymer and copolymer, which are represented by English letters: H--homopolymer
C-copolymer
3.2.2 The melt flow rate is represented by a code, and its range is shown in Table 1. Approved by the Ministry of Chemical Industry of the People’s Republic of China on October 7, 1992 and implemented on May 1, 1993
Melt flow rate, g/10min
>2.00～4.00
>4. 00~7. 50
>7.50～10.5
>10. 5~14. 0
HG 2362—92
Melt flow rate, g/10min
>14.0~18. 0
>18. 0~23. 0
>23. 0~32. 0
>32. 0~～50. 0
3.2.3 Types of fillers, reinforcing materials and additives are indicated by English letters. See Table 2 for details. When no filler, reinforcing material or additive is added, no code is added. When two or more fillers, reinforcing materials or additives are added, the main code is used to indicate it. Table 2
Carbon, graphite fiber
Wear-resistant
Flame retardant
Type of filler, reinforcing material, additive
Lubricant (polytetrafluoroethylene, graphite, silicone, molybdenum disulfide, etc.) Minerals, metals
Organic synthetic materials
UV stable
Antistatic
The shape of fillers and reinforcing materials is indicated by English letters, see Table 2 for details. CodeWww.bzxZ.net
Shape of fillers and reinforcing materials
Grinded fiber
Short fiber
The mass fraction of fillers and reinforcing materials is indicated by two Arabic numerals, and their codes and mass fractions are shown in Table 3 for details. Table 3
Mass fraction, % (m/m)
>7. 5～12. 5
>12. 5～17. 5
>17. 5~22. 5
>22.5~27.5
>27. 5~32. 5
>32. 5～37. 5
>37. 5~~42. 5
>42. 5~47. 5
Mass fraction, % (m/m)
>47. 5~52. 5
>52. 5~57. 5
>57. 5~62. 5
>62. 5~67. 5
>67. 5~72. 5
>72. 5～77. 5
>77.5~82.5
>82.5~87. 5
4 Naming examples
HG 2362-92
4.1 A certain polyoxymethylene molding material (POM), copolymer (C), melt flow rate is 7.80～10.0g/10min (M90), which is named POM-C M90.
4.2 A certain polyoxymethylene molding material (POM), homopolymer (H), melt flow rate is 2.10～3.50g/10min (M)25, with lubricant. Molybdenum sulfide (L), which is named POM-HM25L. 4.3 A certain polyoxymethylene molding material (POM), copolymer (C), melt flow rate of 4.50~6.50g/10min (M60), glass fiber reinforcement (GF), glass fiber content of 27.5~~32.5% (m/m) (30), which is named POM-CM60GF30. 5
Test method
The melt flow rate is determined by the method specified in GB3682. 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 Plastic Resin Products Branch of the National Plastic Standardization Technical Committee (TC15/SC4). This standard was drafted by the Chengdu Silicone Research Center of the Ministry of Chemical Industry. The main drafters of this standard are Lu Qingyun and Zheng Daode. 409
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