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GB/T 1632.4-2020: Plastics. Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 4: Polycarbonate(PC) moulding and extrusion materials
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| GB/T 1632.4-2020 | English | 209 |
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Plastics. Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 4: Polycarbonate(PC) moulding and extrusion materials
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GB/T 1632.4-2020
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Basic data | Standard ID | GB/T 1632.4-2020 (GB/T1632.4-2020) | | Description (Translated English) | Plastics. Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 4: Polycarbonate(PC) moulding and extrusion materials | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G31 | | Classification of International Standard | 83.080.20 | | Word Count Estimation | 11,176 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2021-07-01 | | Quoted Standard | GB/T 1632.1-2008; GB/T 11415-1989; GB/T 30514-2014 | | Adopted Standard | ISO 1628-4-1999, MOD | | Regulation (derived from) | National Standard Announcement No. 28 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the method for determining the viscosity number (also known as the concentration tolerance) and relative viscosity in a dilute polycarbonate solution. This standard applies to polycarbonate (PC) pure materials and blends, and mixtures with or without other fillers. | GB/T 1632.4-2020: Plastics. Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 4: Polycarbonate(PC) moulding and extrusion materials
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(Plastics Use capillary viscometer to determine the viscosity of polymers in dilute solutions:Part 4: Polycarbonate (PC) molding and extrusion materials)
ICS 83:080:20
G31
National Standards of People's Republic of China
Plastics use capillary viscometer to determine polymers
Dilute solution viscosity Part 4: Polycarbonate (PC)
Molding and extrusion materials
materials
(ISO 1628-4:1999, MOD)
2020-12-14 release
2021-07-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
GB/T 1632 "Plastics uses capillary viscometer to determine the viscosity of polymer dilute solutions" includes the following 6 parts:
---Part 1: General rules;
---Part 2: Polyvinyl chloride resin;
---Part 3: Polyethylene and polypropylene;
---Part 4: Polycarbonate (PC) molding and extrusion materials;
---Part 5: Thermoplastic homopolymer and copolymer polyester (TP);
---Part 6: Methyl methacrylate polymer:
This part is Part 4 of GB/T 1632:
This section was drafted in accordance with the rules given in GB/T 1:1-2009:
This part uses the redrafting method to modify and adopt ISO 1628-4:1999 ``Plastics use capillary viscometer to determine polymer dilute solution
Viscosity Part 4: Polycarbonate (PC) molding and extrusion materials":
Compared with ISO 1628-4:1999, the main technical differences and reasons for this part are as follows:
---Regarding normative reference documents, this section has made adjustments with technical differences to adapt to my country's technical conditions and adjustments:
The situation is collectively reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows:
● Replace ISO 4793:1980 with non-equivalent adopting international standard GB/T 11415-1989;
● Replace ISO 3105:1994 with GB/T 30514-2014 which is modified to adopt international standards;
● Since it is not quoted in the main text, ISO 7391-1:2006 and ISO 7391-2:1996 are deleted;
--- Modify "The temperature can be adjusted to 110℃" to "The temperature can be adjusted to 120℃" (see 5:6);
---Before the sample test, the moisture should be removed, and the "sample should be placed in an oven at 120℃ for 2h, then taken out and placed in a desiccator to cool to the room
temperature: "(See 6:4:1);
---In order to make the expression clearer and clearer, amend "under calibration temperature" to "under calibration temperature 25℃±0:1℃" (see 6:4:1);
---5:1, 5:8, 5:9 cited documents changed from undated reference to dated reference, in order to be consistent with Chapter 2:
This part was proposed by the China Petroleum and Chemical Industry Federation:
This part is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC15):
Drafting organizations of this section: Zhonglan Chenguang Chemical Research and Design Institute Co:, Ltd:, Liaocheng Luxi Polycarbonate Co:, Ltd:, Anhui Tianyuan Plastic Industry
Co:, Ltd:, Qingdao Dagang Customs House, People's Republic of China, Kingfa Technology Co:, Ltd:, Liaocheng University, Beijing Physics and Chemistry Analysis Test
Xin, China Guangdong Nuclear Power Juner New Material Co:, Ltd:, Jiangmen Xinhui Henglong Household Innovation Co:, Ltd:
The main drafters of this section: Liu Lirong, Bi Jingli, Shen Changqing, Gao Jianguo, Shi Xin, Teng Mouyong, Zhang Yanjun, Hu Guanghui, Liu Rui, Gou Xinlei,
Song Yuxing and Nie Huayao:
Plastics use capillary viscometer to determine polymers
Dilute solution viscosity Part 4: Polycarbonate (PC)
Molding and extrusion materials
1 Scope
This part of GB/T 1632 specifies a method for determining the viscosity (also known as reduced viscosity) and relative viscosity in a dilute solution of polycarbonate:
This section applies to polycarbonate (PC) pure materials and blends and mixtures with or without other fillers:
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
GB/T 1632:1-2008 Plastics use capillary viscometer to determine the viscosity of polymer dilute solutions Part 1: General rules
(ISO 1628-1:1998, IDT)
GB/T 11415-1989 Laboratory sintered (porous) filter pore size, classification and grade (ISO 4793:1980, NEQ)
GB/T 30514-2014 glass capillary kinematic viscometer specifications and operating instructions (ISO 3105:1994, MOD)
3 Definitions and units
The definition of the viscosity number VN (in mL/g) is shown in formula (1):
VN=η
-η0
η0c
νρ-ν0ρ0
ν0ρ0c
νρ
ρ0
-ν0
ν0c =
ν-ν0
ν0
(1)
Where:
η --- the dynamic viscosity of the solution, in Pascal seconds (Pa s);
η0 --- the dynamic viscosity of the solvent, in Pascal seconds (Pa s);
ρ ---The density of the solution, in kilograms per cubic meter (kg/m3);
ρ0 ---Solvent density, in kilograms per cubic meter (kg/m3);
ν=η/ρ --- kinematic viscosity of the solution, in square meters per second (m2/s);
ν0=η0/ρ0---solvent kinematic viscosity, in square meters per second (m2/s);
c --- The mass concentration of the polymer solution, in grams per milliliter (g/mL):
Since the difference between the density ρ of the solution and the density ρ0 of the solvent is very small, the η in the formula for calculating the reduced viscosity can be replaced by ν: Solution
The relative viscosity ηrel (dimensionless), defined in formula (2):
ηrel=
ν0
(2)
Where:
ν=η/ρ --- kinematic viscosity of the solution, in square meters per second (m2/s);
ν0=η0/ρ0---Kinematic viscosity of the solvent, in square meters per second (m2/s):
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