GB/T 3402-1994 Nomenclature of vinyl chloride homopolymer and copolymer resins
Some standard content:
National Standard of the People's Republic of China
Nomenclature of vizyl fluoride homopolymer and copolymer resins
GB/T 3402-94
Generation GB3402-:82
This standard refers to and adopts the international standard I501060/1-1982 "Monoliths - Vinyl fluoride homopolymer and copolymer resins - Part 1, Nomenclature".
1 Subject content and scope of application
This standard specifies the nomenclature of vizyl fluoride homopolymer and copolymer resins. This standard is applicable to powdered vizyl fluoride homopolymer and copolymer resins, and this nomenclature can be used as the basis for product specifications. This standard does not provide engineering data, performance data or processing condition data required for special applications and processing methods of the resin. Resins with different nomenclatures do not mean that they have the same properties. 2 Reference standards
GB1844 Plastics and resin abbreviations
GB2916 Polyethylene resin dry sieving test method GB3400 General purpose polyvinyl resin plasticizer yield determination GB3401 Determination of viscosity of fluoroethylene resin solution GB 7139 Determination of oxygen in vinyl chloride homopolymer GB12004.2 Preparation method of polyvinyl fluoride plastisol GB.12004.3 Determination of apparent viscosity of polyvinyl fluoride plastisol GB12004.4 Determination of Brookfield viscosity of polyvinyl fluoride plastisol 3 Naming method
This naming method is based on the type, synthesis method, application, main properties and selected properties of polyvinyl fluoride homopolymer resin, divided into 3 or 4 characteristic units, and the resin is named. The naming format is: Characteristic unit 1
Characteristic unit 2
Characteristic unit 3
Characteristic unit 1: Type and polymerization method of fluoroethylene polymer (see 3.1). Feature unit 2 Purpose (see 3.2):
Feature unit 3: Main performance (see 3.3). Feature unit 4. Selected performance (see 3.4). The characteristic units are separated by dots. 3.1. Characteristic unit 1
Characteristic unit 4
Ethylene oxide compounds are divided into homopolymers of vinyl nitride (CH,=CHCI) monomer and copolymers of vinyl nitride monomer and one or more other monomers.
Approved by the State Administration of Technical Supervision on September 24, 1994 and implemented on August 1, 1995
GB/T 3402-94
In this unit, the homopolymer is represented by PVC and the copolymer is represented by VC/.XX according to the symbols specified in GB1844. For other monomer symbols, ×× is a two-digit number, indicating that the vinyl fluoride content calculated according to the chlorine content determined in GB7139 is non-chlorinated for the monomers copolymerized with vinyl fluoride. The relationship (VC] = 1.762 can be used. 9×[CI) calculation, followed by a hyphen and a letter specified in Table 1 to indicate the polymerization method.
3.2 Characteristic unit 2Www.bzxZ.net
Combination method
Suspension polymerization method
Emulsion polymerization method
Bulk polymerization method
Other affinity methods beyond or between the above methods The main uses of vinyl chloride polymers are divided into general-purpose resins and paste resins. In this unit, they are represented by the letters G and P respectively. General-purpose resin (called G resin) is a resin that is mixed with a normal amount of plasticizer or additive to form a dry or wet powder and has not been reduced to a certain size. Paste resin (called P resin) is processed and formed into a paste and is a resin with very fine particles. This standard does not make specific provisions for special resins for special purposes, and as few English words as possible can be used. Letters, indicated by a hyphen after G or G.
3.3 Characteristic unit 3
The main properties indicated in this unit are as follows:
3.3.1 The main property of G resin is viscosity number. Viscosity number is measured according to GB3401 and is expressed in this unit by the category number or nominal value corresponding to the measured value in Table 2.
Nominal value
Viscosity number, mL/g
Measured value
156~144143~136
6135~127|126~119118~107
Note: In Tables 1 and 2, the nominal values of viscosity numbers less than 100 are preceded by *0* and are all expressed in three digits. 3.3.2 The main properties of P resin are viscosity number and viscosity of standard paste. Viscosity number is measured according to GB 3401 determination, expressed by the corresponding category number or nominal value in Table 3. Table 3
Nominal value
Viscosity number.mL/g
Standard paste viscosity, Pa · s
Measured value
144~127
3. 0~7. 0
126107
6. 0~10. 0
106~86
Measured value
Actual value
Standard paste viscosityFirst prepare the standard paste according to the proportion in Table 4 according to GB12004-2. After burning, measure according to GB12004.4. Connect to the viscosity category number (or nominal value), and use ·A or B to indicate the standard viscosity used. Then use the category number corresponding to the standard paste viscosity in Table 3 to indicate the range. Table 4
Standard conversion
Ethylene oxide compound
Di(2-ethyl)hexyl phthalate (txOP) (mass fraction)
Paste A should be used first in the preparation of standard paste. For resins that cannot be converted with paste A or whose viscosity is out of range, paste B should be used. GB/T 3402-94
The naming of this characteristic unit may terminate or continue with characteristic unit 4. 3.4 Characteristic unit 4
This unit indicates the following selected properties:
3. 4. 1G The selected properties of resins are apparent density, sieve separation and plasticizer absorption. The apparent density shall be determined according to Appendix A.
Sieving shall be determined according to GB2916 for the residues of 0.25 mm sieve opening and 0.063 mm sieve opening. b.
Plasticizer absorption shall be determined according to GB3400. These three indicators are expressed in this unit according to their corresponding category numbers and orders in Table 5. Table 5
Apparent density
0. 25 mm sieve
Not specified≤0.23
Small limit for residue on sieve hole
Olefin residue on sieve hole
Not specified
Plasticizer absorption
Amount g/100 Not specified
3.4.2P resin
>0. 5 ~ 5
10-~20
>20-25
>20~40
>20~40
?25-30
>10～60
>40~60
>30~35
The selection properties of P resin include the Severs apparent viscosity of the standard paste and the rheological properties of the standard paste. 8.
>60~80
>60~80
>35--40
>80~99. 5 >99. 5
>80~99. 5 >99. 3
Severs apparent viscosity, standard paste is measured according to GB12004.3 at a shear rate of 500 8-, with the corresponding category number in Table 6 Table 6
Apparent viscosity, Pa : 9
Severs curve does not pass S00 g-1
>15~25
Rheological property, standard paste is measured at a shear rate of 16±1 :-1 and 100±1s-1 according to Appendix B 24 hours after preparation. b.
According to the obtained value, the rheological property of the standard paste is indicated by a letter as defined below. D-——Dilatancy, viscosity (g) increases with increasing shear rate (). The viscosity ratio of 16s-1 to 100s-1 is less than or equal to 0.67, see Figure 1.
-Newtonian, the curve is basically flat or changes only in one direction (increase or decrease). The viscosity ratio of 16s-1 to 100s-1 is between 0.67 and 1.5, see Figure 2. -\
Figure 1 Dilatancy
GB/T 3402-94
Figure 2 Newtonian
Pseudoplasticity, viscosity decreases with increasing shear rate, the viscosity ratio of 16s-1 to 100s-1 is greater than or equal to 1.5, see 3. ST
Figure 3 Pseudoplasticity
Note: When the shear rate is 100g-\, the viscosity of paste B cannot be measured, so the rheological properties can be measured between 16s-1~40g-1. 4 Examples of resin naming
4.1 General homopolymer resin produced by suspension process 4.2 Paste homopolymer resin produced by emulsion process 4.3 General copolymer resin produced by suspension process of vinyl chloride/vinyl acetate containing 90% VC The above three types of resins are named as follows according to the performance values given in Table 7 (see Table 7). Performance
Viscosity, mL/g
Apparent density g/mL
Standard paste A viscosity, Pa *
0. 25 mm sieve residue, %
0.063 mm sieve residue, %
Plasticizer absorption, pnr
Severs viscosity (1: 0.6)
Rheological properties
General homopolymer (4.1))
Measured value
GB/T 3402-94
Using homopolymer (4.2)
Measured value
Category and indication
Category and indication
PVC-E·P·3 (or 120)AI or
PVC-S·G·5 (or 110) or
PVC-S: G·110 - 5126
PVC-E·P120A1+3N
General purpose compound (4.3)
Measured value
Not specified
Category and representation
VC/VAC90-S·G·8(or 080)
or VC/VAC90-S·G·080.
GB/T3402--94
Appendix A
Determination of apparent density of polyvinyl chloride resin
(Supplement)
This appendix specifies the method for determining the apparent density (i.e. the mass per unit volume) of polyvinyl chloride resin. A1 Instrument
A1.1 Pharmaceutical balance: 0.2g sensitivity1
A1.2 Receiver, stainless steel volumetric cylinder with smooth inner surface, volume 100±0.5ml., inner diameter 45±5mm: A1.3 Funnel, shape and size as shown in Figure A1, with a plug plate at the lower outlet, metal with a smooth carbon surface
33
Figure A1 Funnel
A1.4 Measuring cylinder: 200mL
A2 Operation steps
A2.1 Use the plug plate to plug the lower outlet of the stainless steel funnel, and use a bracket to support it upright, and place a receiver of known mass below, the lower outlet of the funnel is 25~30 mm above the receiver, and is coaxial with it. A2.2 Use the volumetric cylinder to measure 110~120mL of the sample and slowly put it into the funnel. A2.3 Remove the plug plate quickly and let the sample fall naturally (the receiver filled with samples should not be moved). A2.4 Use a ruler to scrape off the excess sample on the mouth of the receiver, and then weigh it on a pharmaceutical balance to an accuracy of 0.2g (the measured sample should not be measured repeatedly).
A3 Result Expression
GB/T 3402—94
The apparent density (g/mL) of fluoroethylene resin is calculated according to formula (A1): The mass area of the receiver and the sample
In the formula: mz
mt--the mass of the receiver, g:
-the volume of the receiver, mL (i.e. 100 mL). When the relative error between the single measured value and the average value of the parallel samples is greater than 2%, it must be repeated. The result is the arithmetic mean of the test results of two parallel samples. Appendix B
Determination of paste viscosity using a rotational viscometer at a specified shear rate (supplement)
This appendix specifies the method for determining the viscosity of PVC plastisol paste using a rotational viscometer at a specified shear rate. B1 Instrument
B1.1. Coaxial circular cylinder type rotational viscometer, with the following characteristics: B1.1.1 The diameters of the outer cylinder and the inner cylinder (rotation cylinder) are represented by de and di, and the value of de/di is not greater than 1.5. If the instrument does not have a geometric shape that corrects the end effect, the ratio of the height (hi) of the rotation cylinder to the diameter should satisfy: hi/di≥1.5. This type of viscometer can calculate the shear rate () using formula (B1), measured in s1: de?
Where, \-. Rotational speed, min.
Note: The calculation formula is usually given in the instrument manual. B1.1.2 The viscometer should be able to measure at different shear rates. At the same time, no matter how the outer cylinder, rotary cylinder and rotation speed are combined, the measurement error is no more than 2% of the full scale reading. B1.2 Thermostat. It can keep the sample at 23.0 ± 0.4℃. B2 Operation steps
B2.1 Preparation before the test
B2.1.1 Determine the shear rate during measurement according to the provisions of this standard (see 3.4.2) or the requirements of relevant product standards and contracts. B2.1.2 According to the determined shear rate, select the appropriate outer cylinder, rotary cylinder and rotation speed. If the instrument cannot directly measure a certain shear rate, the two closest values measured at the shear rate value can be used for measurement. Then the result is obtained by the insertion method. B2.1.3 Prepare the standard paste according to the provisions of this standard (see 3.3.2) and place it at the required temperature for a specified time. B3 Determination
Determine according to the test steps specified in the instrument manual. And measure the same sample three times at the same shear rate. B4 Calculation and result expression
GB/T 3402-94
B4.1 According to the relationship between the outer cylinder, rotating cylinder, number of revolutions, shear rate and viscosity given in the instrument manual, calculate the measured value of viscosity. B4.2 The result is the arithmetic mean of the three measured values, rounded to three significant figures, in Pa·s. The temperature and shear rate are indicated in brackets. For example;
n(23℃,100sl) 4.25Pa·s
Additional explanation
This standard is proposed by the Ministry of Chemical Industry.
This standard is under the jurisdiction of the Polyvinyl Chloride Resin Product Sub-Technical Committee of the National Plastics Standardization Technical Committee 4
This standard was drafted by the Jinxi Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are An Shaohua and Sun Lijuan.2g (the measured sample shall not be measured repeatedly).
A3 Result Expression
GB/T 3402—94
The apparent density (g/mL) of fluorinated vinyl resin is calculated according to formula (A1): The mass area of the receiver and the sample
Wherein: mz
mt--the mass of the receiver, g:
-the volume of the receiver, mL (i.e. 100 mL). When the relative error between the single measured value and the average value of the parallel samples is greater than 2%, it must be repeated. The result is the arithmetic mean of the test results of two parallel samples. Appendix B
Determination of Paste Viscosity by Rotational Viscometer at Specified Shear Rate (Supplement)
This appendix specifies the method for determining the viscosity of PVC plastisol paste by rotational viscometer at specified shear rate. B1 Instrument
B1.1. Coaxial circular cylinder type rotational viscometer, with the following characteristics: B1.1.1 The diameters of the outer cylinder and the inner cylinder (rotation cylinder) are expressed by de and di, and the value of de/di is not greater than 1.5. If the instrument does not have a geometric shape to correct the end effect, the ratio of the height (hi) of the rotation cylinder to the diameter should satisfy: hi/di≥1.5. This type of viscometer can calculate the shear rate () using formula (B1), measured in s1: de?
Where, \-. Rotational speed, min.
Note: The calculation formula is usually given in the instrument manual. B1.1.2 The viscometer should be able to measure at different shear rates. At the same time, no matter how the outer cylinder, rotation cylinder and rotation speed are combined, the measurement error is no more than 2% of the full scale reading. B1.2 Thermostat. Can keep the sample at 23.0±0.4℃. B2 Operation steps
B2.1 Preparation before the test
B2.1.1 Determine the shear rate for measurement according to the provisions of this standard (see 3.4.2) or the requirements of relevant product standards and contracts. B2.1.2 According to the determined shear rate, select the appropriate outer cylinder, rotating cylinder and rotation speed. If the instrument cannot directly measure a certain shear rate, the two closest values measured at the shear rate value can be used for measurement. Then the result is obtained by the insertion method. B2.1.3 Prepare the standard paste according to the provisions of this standard (see 3.3.2) and place it at the required temperature for a specified time. B3 Determination
Determine according to the test steps specified in the instrument manual. And measure the same sample three times at the same shear rate. B4 Calculation and result expression
GB/T 3402-94
B4.1 Calculate the viscosity value according to the relationship between the outer cylinder, rotating cylinder, number of revolutions, shear rate and viscosity given in the instrument manual. B4.2 The result is the arithmetic mean of the three measured values, rounded to three significant figures, in Pa·s. The temperature and shear rate are indicated in brackets. For example;
n(23℃,100sl) 4.25Pa·s
Additional explanation
This standard is proposed by the Ministry of Chemical Industry.
This standard is under the jurisdiction of the Polyvinyl Chloride Resin Product Sub-Technical Committee of the National Plastics Standardization Technical Committee 4
This standard was drafted by the Jinxi Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are An Shaohua and Sun Lijuan.2g (the measured sample shall not be measured repeatedly).
A3 Result Expression
GB/T 3402—94
The apparent density (g/mL) of fluorinated vinyl resin is calculated according to formula (A1): The mass area of the receiver and the sample
Wherein: mz
mt--the mass of the receiver, g:
-the volume of the receiver, mL (i.e. 100 mL). When the relative error between the single measured value and the average value of the parallel samples is greater than 2%, it must be repeated. The result is the arithmetic mean of the test results of two parallel samples. Appendix B
Determination of Paste Viscosity by Rotational Viscometer at Specified Shear Rate (Supplement)
This appendix specifies the method for determining the viscosity of PVC plastisol paste by rotational viscometer at specified shear rate. B1 Instrument
B1.1. Coaxial circular cylinder type rotational viscometer, with the following characteristics: B1.1.1 The diameters of the outer cylinder and the inner cylinder (rotation cylinder) are expressed by de and di, and the value of de/di is not greater than 1.5. If the instrument does not have a geometric shape to correct the end effect, the ratio of the height (hi) of the rotation cylinder to the diameter should satisfy: hi/di≥1.5. This type of viscometer can calculate the shear rate () using formula (B1), measured in s1: de?
Where, \-. Rotational speed, min.
Note: The calculation formula is usually given in the instrument manual. B1.1.2 The viscometer should be able to measure at different shear rates. At the same time, no matter how the outer cylinder, rotation cylinder and rotation speed are combined, the measurement error is no more than 2% of the full scale reading. B1.2 Thermostat. Can keep the sample at 23.0±0.4℃. B2 Operation steps
B2.1 Preparation before the test
B2.1.1 Determine the shear rate for measurement according to the provisions of this standard (see 3.4.2) or the requirements of relevant product standards and contracts. B2.1.2 According to the determined shear rate, select the appropriate outer cylinder, rotating cylinder and rotation speed. If the instrument cannot directly measure a certain shear rate, the two closest values measured at the shear rate value can be used for measurement. Then the result is obtained by the insertion method. B2.1.3 Prepare the standard paste according to the provisions of this standard (see 3.3.2) and place it at the required temperature for a specified time. B3 Determination
Determine according to the test steps specified in the instrument manual. And measure the same sample three times at the same shear rate. B4 Calculation and result expression
GB/T 3402-94
B4.1 Calculate the viscosity value according to the relationship between the outer cylinder, rotating cylinder, number of revolutions, shear rate and viscosity given in the instrument manual. B4.2 The result is the arithmetic mean of the three measured values, rounded to three significant figures, in Pa·s. The temperature and shear rate are indicated in brackets. For example;
n(23℃,100sl) 4.25Pa·s
Additional explanation
This standard is proposed by the Ministry of Chemical Industry.
This standard is under the jurisdiction of the Polyvinyl Chloride Resin Product Sub-Technical Committee of the National Plastics Standardization Technical Committee 4
This standard was drafted by the Jinxi Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are An Shaohua and Sun Lijuan.
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