JB/T 56073.43-1999 Polyimide film product quality classification JB/T56073.43-1999 standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T56073.43-1999
Polyimide Film
Product Quality Grading
(Internal Use)
Published on 1999-12-30
National Bureau of Machinery Industry
2000-06-01 Implementation
JB/T56073.43-1999
This standard is a revision of JB/T56073.43-95 "Polyimide Film Product Quality Grading". Compared with JB/T56073.43-95, this standard has modified the writing format of the standard, and the technical content has been changed as follows according to the product standard provisions:
Delete the performance requirements of 1kHz relative dielectric constant and dielectric loss factor;1
2Add the performance requirements of edge tearing resistance.
This standard shall replace JB/T56073.43-95 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Insulating Materials. The drafting unit of this standard is Guilin Electric Science Research Institute. The drafters of this standard are Zhang Qiping and Cui Wei. This standard was first issued on November 10, 1988. In 1994, the standard number was changed from JB/DQ7342.43-88 to JB/T56073.43-94. It was revised for the first time on December 19, 1995 and revised for the second time in 1999. This standard is entrusted to the National Technical Committee for Standardization of Insulating Materials for interpretation. Scope
Mechanical Industry Standards of the People's Republic of China
Polyimide Film
Product Quality Grading
(Internal Use)
This standard specifies the requirements for the quality grading of polyimide film products. This standard is applicable to the product quality grading of polyimide film. Cited Standards
JB/T 56073.43-1999
Replaces JB/T56073.43-95
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When the 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/T2726—1996 Polyimide film
GB/T12707—1991 Guidelines for industrial product quality classification GB/T13541-1992 Test methods for plastic films for electrical use (neqIEC60674-2:1988) GB/T13542-1992
2 Definition and general requirements for plastic films for electrical use (neqIEC60674—1:1980) 3 Classification and naming
According to the provisions of GB/T2726, the models of this product are shown in Table 1. Table 1
4 Requirements
Forming method
Aluminum foil method
Casting method
Mainly applicable to composite insulating materials
Mainly applicable to wrapping and composite insulating materials 4.1 Product quality classification The requirements for its product performance should comply with the provisions of Table 2. The performance requirements of qualified products in Table 2 are completely consistent with the provisions of GB/T2726.
4.2 Evaluation of product quality grades
4.2.1 Necessary conditions for superior products
4.2.1.1 After sampling inspection, if one sample of the product meets the performance requirements of superior products, it will be scored as 5 points, if it meets the performance requirements of first-class products, it will be scored as 4 points, and if it meets the performance requirements of qualified products, it will be scored as 3 points. If the sum of the scores of the three samples of the product is less than 9 points, it is judged that the product performance does not meet the performance requirements of qualified products. If it is full of 9 points and no sample score is less than 3 points, it is judged that the product performance meets the performance requirements of qualified products. If it is full of 12 points, it is judged that the product performance meets the performance requirements of first-class products. If it is full of 14 points or above, it is judged that the product performance meets the requirements of superior products. 4.2.1.2 The product shall meet the performance requirements of superior products at least three times in the four quarters of the year, and meet the performance requirements of first-class products approved by the State Machinery Industry Bureau on December 30, 1999 and implemented on June 1, 2000.
JB/T56073.43-1999
4.2.1.3 The enterprise shall have the factory conditions to stably produce superior products and be able to organize production according to the performance requirements of superior products. Among the qualified products, the percentage of the factory inspection items that meet the performance requirements of superior products is more than 80%. 4.2.2 Necessary conditions for first-class products
4.2.2.1 After sampling inspection, it is determined that the product meets the performance requirements of first-class products according to 4.2.1.1. 4.2.2.2 The product shall meet the performance requirements of first-class products at least three times in the four quarters of the year, and meet the performance requirements of qualified products.
4.2.2.3 The enterprise shall have the factory conditions to stably produce first-class products and be able to organize production according to the performance requirements of first-class products. Among the qualified products, the percentage of the factory inspection items that meet the performance requirements of first-class products (including superior products) shall be above 80%. 4.3 Other relevant requirements shall comply with the provisions of GB/T13542. 5 Methods
5.1 Product performance test
According to the methods specified in GB/T13541; other relevant requirements shall be inspected according to Chapter 6 of GB/T2726-1996 5.2 Factory condition review
The review shall be conducted by the local quality and technical supervision bureau, or the quality inspection agency that meets the provisions of 3.2.1 of GB/T12707-1991, or the organization or agency with quality supervision functions designated by the competent department. 6 Quality assessment procedures
6.1 Three samples are drawn from products of different specifications or batches, and the product performance is graded and determined according to the provisions of 4.2.1.1. 6.2 Check the factory conditions in accordance with the provisions of 5.2. Evaluate the product quality grade in accordance with the provisions of 4.2.1 or 4.2.2. 6.3
Film roll and tube core
Number of joints, nominal thickness
Shortest section length
Width and allowable deviation
pieces/1000m
Qualified products
·Qualified products
Surface is flat and smooth, without wrinkles, tears, particles, foreign impurities and other defects, and the edges are neat and undamaged, in accordance with the requirements of 4.2 of GB/T2726-1996
In accordance with GB/T27 26--1996 4.3.3 requirements for superior products
Bubble, pinhole and
Thickness and allowable deviation
Nominal thickness
Tensile strength
Elongation at break
Nominal thickness
75, 100 longitudinal
Nominal thickness
Shrinkage
150℃
150℃
400℃
JB/T 56073.43-1999
Table 2 (continued)
Qualified products
1420 ±20
≥115
≥115Www.bzxZ.net
≥135
≥115
First-class product
1425±10
≥ 165
≥165
≥165
≥165
Premium product
≥179
≥165
≥179
≥165
Power frequency electrical strength
Nominal thickness
Surface resistivity 200℃
Volume resistivity 200℃
Relative dielectric constant
48~62Hz
Dielectric loss factor
48~62Hz
Long term heat resistance 1
Edge tear resistance
JB/T 56073.43-1999
Table 2 (end)
Qualified products
Average value
≥150
≥150
≥130
≥110
Individual value
≥100
≥100
≥1.0×1013
≤4.0×10-3
Determined by negotiation between the supply and demand parties
·Qualified products
Average value||tt ||≥235
≥215
≥195
≥175
≥145
Individual values
≥180
≥160
≥140
≥[2 0 |0×1014
≤3.6×103
Individual value
≥180
≥165
≥155
≥120
≥100
1) This requirement may not be required if the raw materials and processes used in product production have not changed and, during product appraisal, the long-term heat resistance has been inspected by the relevant accredited testing agency and a test report can be provided.
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