Some standard content:
National Standard of the People's Republic of China
Phenolic
Aldehyde Molding
Materials
Phenolic molding materials
This standard is equivalent to the international standard IS) 800-1992 "Plastics-1 Subject Content and Scope of Application
GB. 1404 --- 1995
86
replaces G3 1403
GB1404
86||tt ||Phenolic molding compounds—Specifications.
This standard specifies the product classification, technical requirements, test methods, inspection rules, and requirements for marking, packaging, transportation and storage of phenolic molding compounds.
This standard applies to phenolic molding compounds made from phenolic resin or its modified resin, fillers and other additives. 2 Reference standards
GB31033--86 Test method for density and relative density of plastics GB 1034--86
Test method for water absorption of plastics
GB/T1043--93 Simple support for rigid plastics Dye impact test method GB 1408-89
Power frequency electrical strength test method for solid insulating materials Relative dielectric constant and dielectric loss of solid electrical insulation materials at power frequency, audio frequency, high frequency (including meter wavelength) GB 1409—88
Test method for dissipation factor
(GB 1634--79(88)
GB 1844—80(88)
GB 2107---80 (88)
G 2547-
81(88)
GB 2918--82(88)
GB 4207--84
GB 5471 --85
G 5474-85
(3 8324---87
GB 9341-88
GB 10064-
-88|| tt||Plastic bending load thermal deformation temperature (referred to as heat deformation temperature) test method Plastic and resin abbreviation code
Plastic combustion performance test method Red hot rod method Plastic resin sampling method
Plastic sample state adjustment and Standard environment for testing Determination of tracking index and tracking resistance index of solid insulating materials under humid conditions Preparation method for compression molding specimens of thermosetting molding compounds Determination of free ammonia and ammonium compounds in phenolic molded products Colorimetric method Plastic volume coefficient test method
Plastic bending property test method
Test method for insulation resistance of solid insulating materials JB/T 6542--93
3 Classification and brand naming
3.1 Classification
3.1.1 Category
Determination of shrinkage of thermosetting molding compounds
Phenolic molding compounds are divided into five categories according to their uses or characteristics, expressed by letters, and the regulations are as follows: A- General
- Heat-resistant
State Bureau of Technical Supervision approved on 1995-12-20 and implemented on 1996-06-01
581
1)
S| |tt||Oil-resistant
tt
Techco
3.1.2 grade
GB 1404—1995
According to product specifications and requirements, various types Materials can be further divided into different grades. 3.1.3 Representation method
The representation method of category and grade is as follows: general or nitrogen-free. A2
A3
General purpose or ammonia-free, improved electrical properties.
General purpose, electrical properties higher than A2
Similar to A2, improved water absorption|| tt||A4
A5
A6
C1
C2
C3
CA
C5||tt| |Dl
D2
D3
D4
E1
E2
E3
Similar to A4, improved acid resistance Sex
Universal, improved impact strength.
Heat resistant.
Heat resistance, impact strength higher than C1.
Heat resistance, electrical properties are higher than C1.
Heat-resistant, asbestos-free.
Heat-resistant, asbestos-free, electrical properties higher than C4. Impact resistant.
Impact resistance, the impact strength is higher than D1.
Impact resistance, the impact strength is higher than D2.
Impact resistance, the impact strength is higher than D3.
Low dielectric loss.
Low dielectric loss, improved water absorption.
Low dielectric loss, impact strength higher than E2. Low dielectric loss, dielectric strength higher than E3. E1
has low dielectric loss and improved impact strength. E5
S1 special, wear-resistant.
3.2 Naming
The naming of phenolic molding compounds consists of the abbreviation code, category, grade and model of the phenolic resin. 3.2.1 Abbreviation code
According to the provisions of GB1844, and according to the different resin synthesis methods in phenolic molding compounds, the abbreviation code is marked as follows: · One-step phenolic resin: PF1
: One-step phenolic resin: PF2
3.2.2 Model
The model composition of phenolic molding compounds can be customized according to each manufacturer or refer to Appendix B (reference part) for the categories, grades and characteristic properties of phenolic molding compounds included in this standard. and uses, see Table 1. Table 1 Categories and grades of phenolic molding compounds and their characteristic properties and uses Categories and grades
PF2A1
PF2A2
PF2A3
582| | tt | Used in the manufacture of insulating structural parts for telecommunications, instruments and transportation electrical appliances 4
General
(A)
Heat-resistant
()
Electrical|| tt||(E)
Categories and grades
PF2A4
PF2A5
PF2A6
PF1A2
PF2C3
PF2C4
PF2E2
PF2F3
PF2E4
PF2E5
Technical requirements
GB 1404—1995
Continued Table 1|| tt||Characteristic properties and uses
Similar to PF2A2. Improved water absorption, used to manufacture insulating structural parts for low-voltage electrical appliances and instruments used in hot and humid areas
Similar to PF2A4, improved acid resistance, The insulating structural parts used to manufacture low-voltage electrical appliances and batteries are universal and have improved impact strength. The insulating structural parts used to manufacture low-voltage electrical appliances and instruments are nitrogen-free. The insulating structural parts used to manufacture telecommunications and instruments are heat-resistant and used to manufacture low-voltage electrical appliances. Insulation parts are heat-resistant and asbestos-free. They are used to make low-voltage electrical insulating parts with low dielectric loss and improved water absorption. They are used to make radio insulating parts with low dielectric loss. The impact strength expert PF2E2 is used to make radio insulating parts with low dielectric loss and impact. The strength is higher than PF2E3, used to make radio insulating parts with low dielectric loss, and the impact strength is higher than PF2E3, used to make radio insulating parts. 4.1 The technical indicators of phenolic molding compounds should comply with the provisions of Table 2, Table 2 Technical indicators of phenolic molding compounds || tt||refers to
universal
property
ability
A performance of molding compound test
volume coefficient
fluidity "| |tt||B performance on specimen test
relative density
bending strength, MPa
impact
strength
notch, kJ/m2| |tt||No notch, kJ/m
Heat distortion temperature, (
Combustion performance (hot rod method)
Insulation resistance.0
Dielectric strength ( 90c) MV/m
Dielectric loss factor (tang),
(1MHz)
PF2
Al
3.0
1.45| |tt||70
1.5
6.0
140
PF2
A2
3.0
1.45||tt ||70
1.5
6.0
140
108
3.5
PF2
A3
3.0
1.45
70
1.5
5.0
120| |tt||1010
3.5
(A)
PF2
A4
3.0
1.45
70| |tt||1.5
6.0
140
10%
3.5
0.08
(.
0.10| |tt||PF2
A5
3.0
1.60
70
1.5
6.0
140||tt ||109
3.5
PF2
A6
3.0
1.45
60
1.8
8.0
140
108
3.5
PF1
A2
3.0
1.45
60| |tt||1.3
6.0
120
1010
3.5
0.08
碌
耐热|| tt||(C)
PF2
C3
4.0
2.
60
2.0
3.5| |tt||155
108
2.0
PF2
C4
3.0
2.00
50||tt ||1.0
3.5
150
108
2.0
PF2
E2
3.0
1.85
45
1.0
2.0
140
1012
5.8
电视
(F )
PF2
tt||4.0
1.95
50
1.3
3. 0
140
. .
1012
5.8
PF2
tt||3.0
1.90
80
1. 5
5.0
120
1012
7.0
PF2
E5
3.0
1.90
70
1.5
6.0
140
1012
5.8
0. 020 0. 020 0. 020 0. 020. |tt||常酸率，%
吸手方.mg
吸酸率，%
PF2
Al
60
PF2
A2
50
PF2
A3
50
GB 1404—1995
结表2|| tt||指
设计
(A)
PF2
A4
40
注：1）技作性金属和歌机PF2
A5
40
0. 5
PF2
A6
PF1
A2
0.02
碌
耿热
( C ) |PF2
C4
30
PF2
E2
175
15
电
( E). 3) After 3 minutes, the hot hot rod will leave the test sample, and the flame will not be visible within 30 seconds.镑道模模plastic中不混有方质和脏物，酔铲模plastic试样或制件应可全光亮、这最的天生。5 test method
5.1 take sample method
applying the prescribed method in GB2547情内的时间。使用：
情发的抽取电影电视惽样法。
a.
像情后后情内歌法。
h.
5.2试Preparation method
标准GB5471中实体设计合线试样。 Among them：
pre-heat temperature105±3C，pre-heat time：15min。a.
h．模塑情动： Electric(E) class 40 MPa, the rest 30 MPa. 5.3 试样的了制、quantity和电视设计，见表3。表3试样的了制、quantity和电视设计设计自表自
relative density| |tt||小是发动
发动发动
热正气水
电动性性
发动电影
58.1
试样包装， mm||ht||(120±1)×(15±0.2)×（10±0.2)(120±1)×(10±0.2)×(4±0.2)（120±1)×（15±0.2 )×（10±0.2)（者口)(120±1)×（15±0.2)×（10±0.2)（无者口)(120±1)×(10±0.2)X(4±0.2)(120 ±1)×(10±0.2)×(4±0.2)(75±1)×(50±1)×(3±0.2)
quantity
2
5 175
10
23±2℃/50±5%/16h over
23±2℃/50±5%/161 over
23±2C/50 ±5%/16h over
room temperature/2h over
room temperature/2h over
50±2C/24±1h+
PF2
F5|| tt||175
15
工作器中水+23+2C（水）/24+1h test project
介电可以（90)(）
迷胏因数
(tana)(1 MHz)
耐漏电起痕单作
游相时
实手率
吸手方
吸酸率
—1995
GB 1404
绝表3
试样包装.mm
$(100±1)×(3± 0.2)
$(50±1)×(3±0.2)
$(100+1)×(3±0.2)
8=3~4板电影粉状
(120±1)×(15±0.2)×(10±0.2)$(50±1)×(3±0.2)
$（50±1)×(3± 0.2)
Quantity
3
2
1
2
3
3
Status Adjustment conditions
23±2C/50±5%/16h or more
23±2/50±5%/16h or more
23±2℃/50±5%/16h Above
Room temperature/more than 2h
23±2C/50±5%/16~ 72h
50±2℃/24±1h+dryer
Medium cooling to room temperature
50±2C/24±1h+dryer
cool to room temperature
Note: When testing flexural strength and impact strength of PF2A6, the state adjustment condition of the sample is 23± 2℃/50±5%/more than 48h. 5.4 Determination of relative density
shall be measured using method A specified in GB1033. 5.5 Determination of volume coefficient
shall be determined using the method specified in GB8324. 5.6 Determination of bending strength
shall be measured using the method specified in GB9341. 5.7 Determination of impact strength
shall be measured using the method specified in GB1043. When performing notch testing, use molded rectangular notched specimens. 5.8 Determination of heat distortion temperature
shall be measured using the method specified in GB1634. Among them:
The bending stress is 1.80MPa.
5.9 Determination of combustion performance
Measured using the method specified in GB2407. After 3 minutes, remove the hot rod from the sample and observe whether there is a visible flame on the sample within 30 seconds. 5.10 Measurement of insulation resistance
shall be measured using the method specified in GB10064. 5.11 Determination of dielectric strength
shall be measured using the method specified in GB1408. Among them:
uses the step-by-step voltage boosting method.
5.12 Measurement of dielectric loss factor
Use the method specified in GB1409 for measurement. 5.13 Determination of tracking resistance index
shall be measured using the method specified in GB4207. Among them:
Measure 5 test points on the sample, the distance between points is not less than 30mm, and the distance between the points and the edge of the sample is not less than 10mm. 5.14 Determination of free ammonia
585
GB 1404-1995
Use the method specified in GB5474 for determination. 5.15 Determination of shrinkage
shall be measured using the method specified in JB/T6542. 5.16 Determination of water absorption
shall be measured using the method specified in GB1034. 5.17 Determination of acid absorption rate
shall be measured using the method specified in Appendix A of this standard. 5.18 Evaluation of test results
5.18.1 Determination of volume coefficient, relative density, heat distortion temperature, insulation resistance, dielectric loss factor, tracking resistance index, free ammonia, water absorption and acid absorption rate, etc. Both values ??and averages should meet the minimum requirements of Table 2. 5.18.2 For bending strength and impact strength, the average value should meet the minimum requirements of Table 2, and the difference between the average value and the standard deviation shall not be less than 90% of the index value.
When individual measured values ??are lower than 90% of the index value, or when three measured values ??are lower than the index value, the sample should be prepared again for testing. The overall average of the two tests should meet the minimum requirements of Table 2, and the difference between the overall average and the overall standard deviation should not be less than 90% of the index value. 5.18.3 For dielectric strength, its average value should meet the minimum requirements of Table 2. When individual measured values ??are lower than the index value, and at the same time a certain measured value exceeds 15% of the average value, or three measured values ??are lower than the index value, the sample should be prepared again for testing. The overall average of the two tests shall meet the minimum requirements of Table 2. || tt | 6.2 The manufacturer should conduct factory inspection on each batch of phenolic molding compound. The factory inspection items are shown in Table 4. If both parties agree through negotiation, factory inspection items may be added or reduced.
Table 4 Factory Inspection Items
Factory Inspection Items
General
Project Name
A Performance of Molding Compound Test
Volume Coefficient
Flowability
B Performance on sample test
Relative density
Bending strength
Punch strength (notch or intact
mouth)
heat distortion temperature
combustion performance
insulation resistance
586
PF2
PF2
Al|| tt||A
A2
A
PF2
A3
(A)
PF2
A4|| tt||A
A
PF2
A5
A
PF2
A6
PF1||tt| |A2
Heat resistance
(C)
PF2
C3
As agreed between the supply and demand parties
A
A| |tt||A
A
A
PF2
C4
A
A
PF2||tt ||E2
A
Electrical
(E)
PF2
E3
A
PF2||tt ||E4
PF2
E5
A
A
Project name
Dielectric strength (90℃)||tt| |Dielectric loss factor (tana),
(1 MH2)
Tracking resistance index
Free nitrogen
Shrinkage
Water absorption|| tt||Acid absorption rate
PF2
Al
PF2
A2
A
Note: Those marked with "△" are Factory inspection items. PF2
A3
GB1404—1995
Continued Table 4
Factory inspection items
General
(A)
PF2
A4
PF2
A5
A
A
PF2
A6
PF1| |tt||A2
Heat resistance
(C)
PF2
C3
As agreed between the supply and demand parties
PF2||tt| |C4
A
PF2
E2
A
Electrical
(E)
PF2||tt| |E3
PF2
E4
PF2
E5
A
6.3 All items specified in Table 2 of this standard are type inspection project. Type inspection shall be carried out in accordance with Article 6.6.1 of GB1.3 at least once a month.
6.4 If the user unit needs re-inspection, it should be carried out in accordance with the provisions of this standard. Acceptance of received products will be carried out within one month. The manufacturer should provide product inspection reports according to the requirements of the user. 6.5 If any indicator does not meet the requirements after inspection, samples should be taken from double the number of packages for re-inspection. If the re-inspection results still do not meet the requirements of this standard, the batch of products will be deemed unqualified. 6.6 When the supply and demand parties have objections to product quality, they should be resolved through negotiation between the two parties or arbitrated by the statutory quality supervision and inspection department. 7 Marking, packaging, transportation, storage
7.1 Mark
There should be clear and firm marks on the packages, indicating the product name, model, batch number, net weight, production date, manufacturer name and product standard number .
In addition, signs such as "moisture-proof" and "heat-proof" must be marked, and a quality certificate must be attached. 7.2 Packaging
Phenolic molding compound should be packed in iron barrels, wooden barrels, woven silk bags or other packaging bags lined with plastic bags. The plastic bags should be sealed. The net weight in drums shall not exceed 50kg, and the net weight in bags shall not exceed 25kg. 7.3 Transportation
Phenolic molding compound should be protected from moisture, heat, dirt and packaging damage during transportation. This product is a non-hazardous device.
7.4Storage
Phenolic molding compound should be stored in a ventilated, dry warehouse, the temperature does not exceed 35℃, and should not be near fire sources, heaters or exposed to direct sunlight. From the date of production, the storage period of this product is two years in iron barrels and one year in wooden barrels, woven silk bags or other packaging. After the storage period has expired, it can be re-inspected according to the provisions of this standard. If the quality is qualified, it can still be used. 587
GB 1404—1995
Appendix A
Determination of acid absorption rate
(Supplement)
This appendix is ??not equivalent to the international standard IS1751981 "Plastics—Determination of Resistance to Chemical Substances." This appendix stipulates that the molded sample should be immersed in a certain concentration of sulfuric acid, and after a certain period of time, the change in mass should be measured. A1 equipment
A1.1 balance: sensitivity 0.001g;
A1.2 oven: sensitivity ±2℃;
A1.3 acid container: 2000ml with glass stopper Jar or specimen jar with frosted lid. A2 sample
The sample diameter is 50±1mm, the thickness is 3±0.2mm, and there are 3 samples in each group. A3 test conditions
a.
b.
t
Sulfuric acid concentration: 30% (m/m), at least 8mL of sulfuric acid should be used per square centimeter of sample surface area. Pickling temperature is 23±2℃.
Acid soaking time: 24±1h.
A4 Test Steps
A4.1 Wipe the sample clean, place it in an oven at a temperature of 50±2℃, and keep it for 24±1h. A4.2 Then move the sample into a desiccator, cool to room temperature and weigh to the nearest 0.001g. A4.3 After weighing, the samples are immediately immersed in sulfuric acid. There should be no bubbles on the surface, and the samples should not be in surface contact with each other or with the container wall.
A4.4 Take out the sample after 24 ± 1 hour, rinse it with running water for 3 minutes, wash away the surface acid, blot it dry with filter paper, wipe it with a clean silk cloth, and weigh it immediately to the nearest 0.001 g.
A5 results indicate
A5.1
The acid absorption rate is calculated according to the following formula:
K = m2=mi × 100
mi||tt ||In the formula: K--acid absorption rate, %,
mj-
ma-
The mass of the sample before pickling, g;
pickling The mass of the final sample, g.
A5.2 test results are expressed as the arithmetic mean of 3 samples. A6 Test report
The test report should include the following content:
a.
b.
c
d.
e.| | tt | |tt||Single value and arithmetic mean of acid absorption rate. GB1404--1995
Appendix B
Product model composition
(reference part)
This appendix specifies the model composition of phenolic molding compounds. B1 model
The model of phenolic molding compound consists of 3 parts: resin composition
resin content
filler type
B1. 1
filler type with numbers Indicates, see Mai B1
Table B1
Filling type
Ben (bamboo) powder
Quartz
Mica
Symbol||tt ||1
2
3
Filler type
Asbestos
Age soil
Dark powder and minerals
Symbol
Tai
5
B
Types of fillers
Minerals and Minerals
Fibers
its
Symbol
8
9
Note: ① Products containing all kinds of fillers generally use the symbol of composite filler (6 or 7) to indicate the amount of one of the fillers. When the total amount of filler is more than 60%, it should be represented by the symbol of that type of filler. ② Products containing three or more fillers are generally indicated by the symbol of composite fillers. If the amount of a certain filler accounts for more than 50% of the total amount of fillers, it should be indicated by the symbol of that filler. B1.2 Resin content is expressed in numbers, see Table B2* Table B2
Resin content
30
>30～35
>35-40||tt| |Symbol
1
2
B1.3 The numerical representation of the resin composition is shown in Table B3. Resin composition
phenol, formaldehyde
industrial phenol, formaldehyde
phenol, industrial phenol, formaldehyde
phenol, dicarboxylic acid, caprylic aldehyde
phenol, formaldehyde Phenol, methyl ether
Phenol, creosol, formaldehyde
Phenol, furfural
Phenol, formaldehyde, furfural
Resin content
40～45| |tt||>45~50
50~55
Table B3
Symbol
1
2
3||tt ||8
Special number
4
5
6
Phenol, aniline, formaldehyde
Resin content
>55-~60
>60~65
>65
Resin composition
polyvinyl chloride, valve powder, formaldehyde
butadiene rubber, Phenol, formaldehyde
Polyamide, phenolic acid, formaldehyde
Styrene, benzene powder, formaldehyde
Polyvinyl shrinkage, phenol, formaldehyde
%
symbol
7
8
9
symbol| |tt||01
02
03
04
05
06
07
08||tt ||589
588
Please refer to this appendix;
The model and batch number of the molding compound;
Sample size and condition adjustment conditions;
Test conditions:
Single value and arithmetic mean of acid absorption rate. GB1404--1995
Appendix B
Product model composition
(reference part)
This appendix specifies the model composition of phenolic molding compounds. B1 model
The model of phenolic molding compound consists of 3 parts: resin composition
resin content
filler type
B1. 1
filler type with numbers Indicates, see Mai B1
Table B1
Filling type
Ben (bamboo) powder
Quartz
Mica
Symbol||tt ||1
2
3
Filler type
Asbestos
Age soil
Dark powder and minerals
Symbol
Tai
5
B
Types of fillers
Minerals and Minerals
Fibers
its
Symbol
8
9
Note: ① For products containing all kinds of fillers, the symbol of composite filler (6 or 7) is generally used to indicate the amount of one of the fillers. When the total amount of filler is more than 60%, it should be represented by the symbol of that type of filler. ② Products containing 3 or more fillers are generally represented by the symbol of composite fillers. If the amount of a certain filler accounts for more than 50% of the total amount of fillers, it should be represented by the symbol of that filler. B1.2 Resin content is expressed in numbers, see Table B2* Table B2
Resin content
30
>30～35
>35-40||tt| |Symbol
1
2
B1.3 The numerical representation of the resin composition is shown in Table B3. Resin composition
phenol, formaldehyde
industrial phenol, formaldehyde
phenol, industrial phenol, formaldehyde
phenol, dicarboxylic acid, caprylic aldehyde
phenol, formaldehyde Phenol, methyl ether
Phenol, creosol, formaldehyde
Phenol, furfural
Phenol, formaldehyde, furfural
Resin content
40～45| |tt||>45~50
50~55
Table B3
Symbol
1
2
3||tt ||8
Special number
4
5
6
Phenol, aniline, formaldehyde
Resin content
>55-~60
>60~65
>65
Resin composition
polyvinyl chloride, valve powder, formaldehyde
butadiene rubber, Phenol, formaldehyde
Polyamide, phenolic acid, formaldehyde
Styrene, benzene powder, formaldehyde
Polyvinyl shrinkage, phenol, formaldehyde
%
symbol
7
8
9
symbol| |tt||01
02bzxz.net
03
04
05
06
07
08||tt ||589
588
Please refer to this appendix;
The model and batch number of the molding compound;
Sample size and condition adjustment conditions;
Test conditions:
Single value and arithmetic mean of acid absorption rate. GB1404--1995
Appendix B
Product model composition
(reference part)
This appendix specifies the model composition of phenolic molding compounds. B1 model
The model of phenolic molding compound consists of 3 parts: resin composition
resin content
filler type
B1. 1
filler type with numbers Indicates, see Mai B1
Table B1
Filling type
Ben (bamboo) powder
Quartz
Mica
Symbol||tt ||1
2
3
Filler type
Asbestos
Age soil
Dark powder and minerals
Symbol
Tai
5
B
Types of fillers
Minerals and Minerals
Fibers
its
Symbol
8
9
Note: ① Products containing all kinds of fillers generally use the symbol of composite filler (6 or 7) to indicate the amount of one of the fillers. When the total amount of filler is more than 60%, it should be represented by the symbol of that type of filler. ② Products containing three or more fillers are generally indicated by the symbol of composite fillers. If the amount of a certain filler accounts for more than 50% of the total amount of fillers, it should be indicated by the symbol of that filler. B1.2 Resin content is expressed in numbers, see Table B2* Table B2
Resin content
30
>30～35
>35-40||tt| |Symbol
1
2
B1.3 The numerical representation of the resin composition is shown in Table B3. Resin composition
phenol, formaldehyde
industrial phenol, formaldehyde
phenol, industrial phenol, formaldehyde
phenol, dicarboxylic acid, caprylic aldehyde
phenol, formaldehyde Phenol, methyl ether
Phenol, creosol, formaldehyde
Phenol, furfural
Phenol, formaldehyde, furfural
Resin content
40～45| |tt||>45~50
50~55
Table B3
Symbol
1
2
3||tt ||8
Special number
4
5
6
Phenol, aniline, formaldehyde
Resin content
>55-~60
>60~65
>65
Resin composition
polyvinyl chloride, valve powder, formaldehyde
butadiene rubber, Phenol, formaldehyde
Polyamide, phenolic acid, formaldehyde
Styrene, benzene powder, formaldehyde
Polyvinyl shrinkage, phenol, formaldehyde
%
symbol
7
8
9
symbol| |tt||01
02
03
04
05
06
07
08||tt ||589
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