GB 12670-1990 Polypropylene resin

This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements for polypropylene resin. This standard applies to granular propylene homopolymers or copolymers produced by polymerization of propylene or propylene and ethylene under the action of a catalyst and containing additives. This standard does not apply to colored, filled, reinforced, blended polypropylene resins and masterbatch materials. GB 12670-1990 Polypropylene resin GB12670-1990 standard download and decompression password: www.bzxz.net

National Standard of the People's Republic of China
Theme content and scope of application
Propylene resin
Polypropylene resin
GB 12670-- 90
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements for polypropylene resin. This standard is applicable to granular polymers produced by the polymerization of propylene or propylene and ethylene under the action of a catalyst and containing additives. Propylene homopolymer or copolymer
This standard does not apply to coloring, filling, reinforcing, blending polypropylene resin and masterbatch. 2 Reference standards
GB/T 1040
GB/T 1633
GB/T 1843
GB/T 2410
GB/T2412||tt ||GB/T 2546
GB/T 2547
GB 2918
Plastic tensile test method
Thermoplastic softening point (Vicat) test method Plastic cantilever beam Impact test method
Transparent plastic transmittance and haze test method Polypropylene isotactic index determination method
Polypropylene and propylene copolymer material naming
Plastic resin sampling method||tt ||Standard environment for conditioning and testing of plastic specimens GB/T 3682
GB/T 6595
GB/r 9342
GB/T 9345
GB/ T 9352
Test method for melt flow rate of thermoplastics Polypropylene resin "fish eye" test method
Test method for Rockwell hardness of plastics
General method for determination of ash content of plastics
Preparation of thermoplastic compression molding specimens
Food packaging and polypropylene resin hygiene standards GB 9693
3 Technical requirements
3.1 Polypropylene resin is a natural color, cylindrical particles, the size of the particles It should be 2~5mm in any direction and free of mechanical impurities. 3.2 For resins with hygienic requirements, they should comply with the regulations of GB9693. 3.3 The quality indicators of polypropylene resin should meet the requirements of Table 1. Approved by the State Bureau of Technical Supervision on 1990-12-30 90
Implemented on 1991-10-01
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4 test method
4.1厂塑、注发试样的树式
4.1.1压塑试样的根式|| tt||GB12670
按GB/T9352 设计方法，表2
模塑去
厂制样发
pre厃
4.1.2注塑试样的电影
模塑Temperature
210±5
210±5
模塑情动
可以情动||tt| |2
标准次最好推地量的60～250cm的注塑机一注塑染，conditions are as follows：模塑时间
5～10| |tt||5
或电影lg/10min时表255±5C；
注塑情常：机发情常以论论试样正视题是飞边、约痕或气泡； injection speed：8~12mm /s；
果水水：60士3℃。
在在在于下载设计名合设计，使所制得的试样正视，这些时间，无气泡、身痕和熔合纹。4.2试样电视合合和电视电影
按GB2918 电影最合，试样电视合合时间的不同于24h。4.3 身度度电视
4.3.1电影|| tt||塘瓷盘：300mmX400mm×40mm
b．要线。
4.3.2 Test
Take 1kg sample, sprinkle it on a sugar porcelain plate, wipe out the colored particles, put it in cultured blood, and count the number of colored particles. Note: Colored particles refer to particles that are partly or entirely contaminated with black color (such as oil stains, oxidation, etc.). 4.3.3 Report
Report the number of color particles wiped out per dry gram of resin. 4.4 Melt flow rate test
Conduct according to the regulations of GB/T3682, or it can be measured with an automatic tester. The test adopts standard test conditions 12. Before loading the pellets, purge the material with nitrogen at a pressure of 50kPa for 5~ 10s: 4.5 isogauge index test
is carried out according to the regulations of GB/T2412.
4.6 Powder ash test
is carried out in accordance with the provisions of GB/T9345, using the following conditions: direct combustion method (A) method;
b. Ignition temperature: 850±50℃.
4.7 Tensile yield strength test
4.7.1 Sample preparation
Lower quasi-industry information||tt GB 12670.90 |
L total length (115mm); C - parallel part length (33±0.5mm); b - parallel part width (6±0.5mm); W end width (19±6.4 mm; R1--14±1mm; Rz-25±1mm; G. Gauge length (or effective part) (25±0.13mm); H distance between clamps (64±5mm); d-thickness (1.0±0.1mm) 4.7.2 Test
According to GB/T1040, the test speed is 50±5mm/min. 4.8 Izod impact strength test
4.8.1 Sample preparation
According to 4.1. 2 Specimens shall be prepared in compliance with the requirements of GB/T1843, and the width of the specimen shall be 6.35mm. 4.8.2 The condition adjustment and test environment of the homopolymer shall be carried out in accordance with the provisions of 4.2;
a.||tt| |h. The condition of the copolymer sample shall be carried out according to the provisions of 4.2. After the condition is adjusted, the sample shall be placed in the -20C test environment for 1 hour before testing. |tt||Conducted in accordance with the provisions of GB/T1843
4.9 Softening point (Vicat) test
4.9.1 Sample preparation
Conducted in accordance with the provisions of 4.1.1, sample thickness. 4mm, or two 2mm thick specimens can be stacked to a thickness of 4mm. 4.9.2 Test
shall be carried out in accordance with the provisions of GB/T1633. The heating rate is 12±1.0C/6min, and the static load endured by the specimen. is 1000+5°g. 4.10 Rockwell hardness test
4.10.1 Sample preparation
Conducted according to the provisions of 4.1.1, the sample thickness is 4mm, and sample stacks less than 4mm thick are not used The combined thickness is 4mm. 4.10.2 The condition adjustment and test environment of the sample shall be carried out according to the provisions of 4.2
4.10.3 Test
shall be carried out according to the provisions of GB/T9342, using R scale 4.11|| tt||Haze test
4.11.1 Sample preparation
The sample preparation shall be carried out in accordance with the provisions of GB/T6595 Appendix A (reference part) 4.11.2 Sample condition adjustment
After the sample is prepared, leave it at room temperature for 24 to 48 hours. T6595 regulations
under the test
4.13 result expression
GB12670-·-90
Consistent with the number of significant digits and units in the polypropylene resin quality index table 5 Inspection Rules
5.1 Batch
Polypropylene resin should be divided according to the production cycle of the manufacturer or the silo. Batch. 5.2 Sampling
shall be carried out in accordance with GB/T2547. Samples for testing the ash content of powder should be taken from the production line before granulation. 5.3 Inspection and grading
The manufactured products shall be inspected by the quality inspection department of the manufacturer in accordance with the sample method specified in this standard. The quality grade of the product shall be determined based on the inspection results and technical requirements, and a quality certificate shall be submitted. 5.4 Re-inspection
If the inspection results do not meet the requirements of this standard, re-samples should be taken from twice the amount of packaging bags for re-inspection. If the results still do not meet the requirements, the batch of products will be downgraded or re-inspected. Disposal of unqualified products. 5.5 Acceptance
5.5.1 Each batch of manufactured products shall be accompanied by a quality certificate indicating the product name, brand, batch number, grade and stamped with a special quality inspection seal and an inspector's seal.
5.5.2 The user can inspect the received products in accordance with the provisions of this standard. Any objections should be raised to the manufacturer within one year after the product is produced, and shall be resolved through negotiation between the supply and demand parties. 6 mark, packaging, transportation and storage
The product name, manufacturer name, trademark, product grade, batch number and net weight should be printed on the polypropylene resin packaging bag. 6.2 Packaging
Polypropylene resin should be packed with plastic film as the inner packaging and polypropylene woven bags as the outer packaging (or other packaging containers with the same packaging effect). The net weight of each bag is 25kg. Large packaging of other weights can also be used. 6.3 Transportation
Polypropylene resin is a non-dangerous product. During transportation and loading and unloading, it is strictly forbidden to use sharp tools such as iron hooks, and do not throw them away; transportation tools should be kept clean, dry, and equipped with sheds or dry cloths. During transportation, they should not be mixed with sand, broken metal, coal, glass, etc. Mixed shipment, strictly prohibited from sunlight and rain. 6.4 Storage
Polypropylene resin should be stored in a ventilated, dry and cool warehouse, strictly protected from sunlight and rain. 97 | | tt |
Blowed film type
Coating type
Spinning type
Additional instructions:
GB12670-90
Appendix||tt ||A
Comparison table between national standard grades of polypropylene resin and enterprise trade names (reference parts)
Sequence
2|| tt||3
11||tt| |12
This standard is proposed by China Petrochemical Corporation. National standard brand
PP HM-012
PP HM-022
PP HM-022-A
PPH-M-045
PP HM-075
PPH-M-105
PPB-MP-012wwW.bzxz.Net
PP HT-022
PPH-T-045
PP HT-045-A
PPH-TI-045
PP HF-012
PP HL-022
PH-I-105
PPH-H-300|| tt||PP H-YL-022
PP IHI-Y1.-045
PP H-YL-075
PP H-YL-140
PP H -YI-180
PPH-YL-300
PP H-YL-300-A
Enterprise
Business
product
1500.4016
2401, F401
2501, F501, 5004
D| |tt||50404
70 126
3602|| tt | | 3 702.502852 | | tt | | 70218 | This standard is drafted by the Second Chemical Plant of Beijing Yanshan Petrochemical Company. The main drafters of this standard are Chen Huiying, Shen Shuqin and Xing Shaojun. 98
Quasi operation index
Quasi industry porcelain fish fee is down
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