This standard is a classification and naming system based on the basic properties of carbon black, which is composed of letters and numbers. This standard is applicable to all carbon blacks for rubber. GB/T 3777-1996 Rubber Carbon Black Standard Classification and Naming System GB/T3777-1996 Standard Download Decompression Password: www.bzxz.net

1 Scope
National Standard of the People's Republic of China
Standard classification system for carban blacks used in rubber products
Standard classification system for carban blacks used in rubber productsGB/T 3777—1996
Replaces GB/T 3777-- 89
This standard is a classification and naming system based on the basic properties of carbon black, which is composed of letters and numbers. This standard applies to all carbon blacks used in rubber.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T528—92 Determination of tensile properties of vulcanized rubber and thermoplastic rubber GB/T3780.1·91 Test method for iodine absorption value of carbon black used in rubber GB/T 3780.2:-94 Carbon black Determination of dibutyl phthalate absorption value GB/T3780.4--94 Carbon black (compression specimen) Determination method and sample preparation for dibutyl phthalate absorption value GB/T3780.5-91 Determination of specific surface area of ​​carbon black for rubber by CTAB method GB/T37806-91 Test method for tinting strength of carbon black for rubber GB/T3780.18-88 Formulation and identification method of carbon black in natural rubber GB/T10722-89 Determination of specific surface area of ​​carbon black by nitrogen adsorption method GB/T14853.1-93 Determination of pouring density of granulated carbon black for rubber (eIS0) 130687) 3 Classification and naming principles
3.1 This classification and naming system consists of four symbols. The first symbol is a letter, which represents the effect of the carbon black on the vulcanization rate in the rubber compound; the next three symbols are Arabic numerals, the first numeral represents the particle size range of the carbon black, and the next two numerals are given arbitrarily.
3.1.1 The letter "N" refers to furnace carbon black with normal vulcanization rate, but does not include furnace carbon black modified to slow down the vulcanization rate; the letter \S\ represents channel carbon black, mixed carbon black and modified furnace carbon black with slow vulcanization rate. 3.1.2 The first numeral after the letter represents the average particle size of carbon black measured by electron microscopy. It is divided into 10 groups according to its particle size range and the group order is determined according to the specified range, as shown in Table 1. Table 1
Approved by the State Administration of Technical Supervision in 1996.1028
Average particle size
20~ -25
1997-06-01 implementation
Typical properties of carbon black
GB/T3777--1996
Table 1 (end)
Classification and naming of various types of carbon black and their typical physical and chemical properties are listed in Table 2. 4.1
2 Typical properties of carbon black
Detailed description:
Target
Boron absorption value
DEP absorption value
CTAR absorption
DI3P absorption value; (shrinkage sample)
11u-5 m/kg
10im/kk
wheat area
10°m/kg
nitrogen adsorption
surface area
average particle size
26~-30
31~-39
61-100
o1~200
201~500
11ASTM117651300% elongation should refer to the test carbon black determination value and the difference between the reference carbon TRHN0.6. im
carbon black vulcanized rubber
300% fixed strength
MPa.3umin
—2:0
day bridge value
iodine absorption value
GB/ 3777 1996
Table 2 (end)
DBP absorption valueCTAR adsorption
DRP absorption value (compression test specimen>
10m/kg/10-m/kg
Surface area
lorm\/kg
Nitrogen adsorption
Degradation volume
10°ms/kg
Color pouring
Vulcanized rubber containing carbon black
390 Elongation modulus
MPa,30min
Note: The standard value is the value determined by the manufacturer's production method and the user's injection molding requirements as an agreement. All other properties listed are the average of typical values ​​provided by several factories. 4.2300% elongation modulus is expressed as the difference between the test carbon black and the standard reference carbon black SKR2 (SRB2 No. standard values ​​are shown in Table 3), 4.3 The maximum value of the 45 μm sieve residue is 0.1%. 4.4 The maximum value of the 500 μm sieve residue is 0.001%. 4.5 The values ​​given in Table 2 are typical values ​​for various types of carbon black. Table 3 Standard reference carbon black
Production yield, (t)
Iodine absorption value-g/kg
DBP absorption value.10-m/kg
TBP absorption value (compression test partner), 10m/kg Coloring strength, %
CTARB adsorption surface area, J0'm\/kg
Anshan Chemical Plant No. 2
Tianjin Carbon 1
Iodine absorption value
GB/T 3777—1996
Table 2 (end)
DBP absorption
CTAB adhesion
(compression specimen)
DBP absorption
10-~m/kg
10-m2/kg
Surface area
10m/kg
Nitrogen adsorption
Surface area
10°tm*/kg
Carbon-containing vulcanizate 1
300% tensile stress
MPa,30 min
—4+ 4
- 5+ 5
Note: The target value is the value stipulated as an agreement between the production method determined by the producer and the technical requirements determined by the user. All other properties listed are the average values ​​of typical carbon blacks provided by several factories.
4.2300% modulus is expressed by the difference between the test carbon black and the standard reference carbon black SRB2 (see Table 3 for the standard value of SRB2). 4.3 The maximum value of the 45um sieve residue is 0.1%. 4.4 The maximum value of the 500um sieve residue is 0.001%. 4.5 The given values ​​in Table 2 are typical values ​​for various types of carbon black. Table 3 Standard reference carbon black
Manufacturer
Production batch, ()
Phosphorus absorption value.g/kg
DBP absorption value, 10-\m/kg
DBP absorption value (compression test), 10-m/kg Boil color strength +%
CTA3 Adsorption surface arealom/kg
Anshan Chemical Plant No. 2
Tianjin Carbon Black Plant
Styrene-butadiene rubber
Natural rubber
Tear strength MPe
300% tensile stress, MPa
Elongation at break, %
Tear strength, MPawww.bzxz.net
300% tensile stress, MPa
Elongation at break, %
GB/T 3777-1996
Table 3 (end)
Note: The physical properties of SRB2 are the difference between SRB1 and SRB1. 5 Approval procedures for classification and naming of new carbon blacks
5.1 Any new carbon black that is to be classified and named must be submitted by the production unit to the Carbon Black Standardization Technical Committee of the National Rubber and Rubber Products Standardization Technical Committee for application reports. 5.2 The application report must include the production process and technical conditions of the carbon black, typical performance quality and usage conditions. 5.3 With the approval of the National Technical Committee for Standardization of Rubber and Rubber Products and the Carbon Black Standardization Technical Committee, the production unit shall submit the typical values ​​tested by the following test methods:
Iodine absorption value
DBP absorption value
DBP absorption value (compression specimen)
CTAB adsorption surface area
Nitrogen adsorption surface area
Coloring strength
300% tensile stress
Pour density
Test method
GB/T 3778. 1
GB/T 3778. 2
GB/T 3778. 4
GB/T 3778. 5
GB/T10722
GB/T3778.6
GB/T528 and GB/T3780.18
GB/T14853.1
5.4 The Carbon Black Sub-Technical Committee of the National Technical Committee for Standardization of Rubber and Rubber Products shall review the application report and the submitted typical values ​​at the full committee meeting and report it to the National Technical Committee for Standardization of Rubber and Rubber Products for classification and naming after approval.
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