This part specifies the test methods for laminated paperboard. This part is applicable to laminated paperboard defined in JB/T 10443.1-2004. JB/T 10443.2-2004 Laminated paperboard specification Part 2: Test methods JB/T10443.2-2004 Standard download decompression password: www.bzxz.net

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Machinery Industry Standard of the People's Republic of China
JB/T10443.2--2004
Specification for laminated pressboard Part 2: Methods of test
IEC60763-2:1991, IDT)
Published on February 10, 2004
Implementation on June 1, 2004
Published by the National Development and Reform Commission of the People's Republic of China Foreword
Normative references
Specimen pretreatment and test environment conditions
Sample drying
Dimensions,
Straightness
Force Mechanical properties test
Bending strength and constant deflection load,
Apparent bending elastic modulus
Compressive strength
(Compressible) compressibility
Impact strength
Shear strength.
Tensile strength
Inner layer strength
Electrical strength
Thermal properties test
Physical and chemical properties test
Apparent density
Water absorption
Moisture content
Shrinkage in air after drying
Oil absorption
Ash content,
Contamination of liquid dielectric
Electrical conductivity of water extract..
pH of water extract
Electrical conductivity of trichloroethylene extract
Figure 1 Position of the specimen relative to the length, width and thickness of the sheetFigure 2 Dimensions of the specimen and electrode arrangement for the layer-wise electrical strength (lateral electrical strength) testFigure 3 Alternative shapes of exhaust electrodes …
HB/T10443.2--2004
JB/T10443 Specification for laminated paperboard is divided into three parts: - Part 1: Definition, classification and general requirements; - Part 2: Test methods:
JB/T10443.2—2004
Part 3: Specification for single material Specification for laminated pre-pressed paperboard - Type LB3.1.1, LB3.1.2, LB3.3.1 and LB3.3.2. This part is the second part of JB/T10443. This part is formulated for the first time.
This part is equivalent to the International Electrotechnical Commission (IEC) publication [EC60763-2:1992 Specification for laminated paperboard Part 2: Test methods (English version).
This part is proposed by the China Machinery Industry Federation. This part is under the jurisdiction of the National Technical Committee for Standardization of Insulating Materials. This part was drafted by Guilin Electric Science Research Institute. The main drafters of this part are Luo Chuanyong and Zhu Meilan. HT
1 Scope
Specification for laminated paperboard
Part 2: Test methods
This part of JBT10443 specifies the test methods for laminated paperboard. This part applies to laminated paperboard defined in JB/T10443.1—2004. 2 Normative references
IB/T10443.2—2004
The clauses in the following documents become the clauses of this part through reference in this part of JB/T10443. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, the parties to an agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this part. GB/T462-1989 Determination of moisture content of paper and paperboard (eqvISO287:1985) GB/T463-1989 Determination of ash content of paper and paperboard (eqvISO2144:1987) GB/T1408.1-1999 Test method for electrical strength of solid insulating materials - Test under power frequency (eqvIEC60243-1:1988) GB2536-1990 Transformer oil (neqIEC60296:1982) JB/T8989.2-1999 Specification for pressboard and thin paperboard for electrical use - Part 2: Test methods (eqvIEC60641-2:19 79) JB/T10443.1—2004 Specification for laminated paperboard Part 1: Definitions, classification and general requirements (IEC60763-1: 1983, MOD) IEC60247: 1978 Measurement of relative permittivity, dielectric loss factor and DC resistivity of insulating liquids IEC60250: 1969 Recommended method for determining the permittivity and dielectric loss factor of electrical insulating materials at power frequency, audio frequency and radio frequency (including meter wavelength)
3 Sample pretreatment and test environment conditions
When the sample is required to be pretreated according to this chapter, it should be treated at (23±2)℃ and (50±5)% relative humidity. Then, test under this condition, or test the sample within 5 minutes after taking it out of this condition. The pretreatment time is shown in Table 1. Qiu 1
Nominal thickness, d
10d≤15
: 15
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