Some standard content:
Chemical Industry Standard of the People's Republic of China
Polyamide 1010 resin
1 Subject content and scope of application
HG2349-92
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements of polyamide 1010 resin for injection molding or extrusion.
This standard applies to polydecanediamine sebacic acid (polyamide 1010) resin prepared by polycondensation using the salt made of sebacic acid and decanediamine as raw materials.
2 Reference standards
GB 1033
GB 1040
GB1042
GB1043
GB 2547
GB4608
GB 6678
GB 6679
Test method for density and relative density of plastics
Test method for tensile strength of plastics
Test method for bending of plastics
Test method for impact of simply supported beam of plastics
Sampling method for plastic resins
Test method for melting point of partially crystalline polymersOptical methodGeneral rules for sampling of chemical products
General rules for sampling of solid chemical products
Determination method for viscosity number of polyamides
GB12006.1
HG 2350
3 Product classification
Nomenclature of polyamide (PA) homopolymer for molding and extrusion Polyamide 1010 resin is classified and named according to HG2350. Its model and viscosity range are shown in Table 1. Table 1 Model and viscosity range of polyamide 1010 resin Type
4 Technical requirements
4.1 Appearance
Polyamide 1010 resin is white or slightly yellow translucent uniform particles. 4.2 Physical and chemical properties
The physical and chemical properties of polyamide 1010 resin shall comply with the provisions of Table 2. Approved by the Ministry of Chemical Industry of the People's Republic of China on July 20, 1992360
Viscosity range, mL/g
99～116
Implemented on January 1, 1993
Particle size, N/g
Content of particles with black spots, %
Weight loss on drying, %
Viscosity number, ml./g
Melting point, C
Relative density
Tensile strength (full), MPa
Elongation at break, %
Flexural strength, MPa
Impact strength (notched), kJ/m2
Test method
5.1 Appearance
5.1.1 Apparatus
HG 2349—92
Table 2 Physical and chemical properties of polyamide 1010 resin
Superior product
35～45
Colorimetric tube, 50mL, with standard material plug. 5.1.2 Operation steps
Qualified product
Superior product
First-class product
Qualified product
Superior product
99～116
198~~210
1.03~~1.05
Qualified product
30～50
Put the sample into the colorimetric tube that matches the reference color column colorimetric tube, with the same amount as the scale of the reference color column colorimetric tube, and put it into the colorimetric box or a well-lit place for colorimetric comparison with the reference color column colorimetric tube. The resin standard sample in the reference color column shall be selected by both the supplier and the buyer. 5.2 Determination of particle size
5.2.1 Instrument
Balance: sensitivity 0.01g.
5.2.2 Operation steps
Weigh 1.99-2.01g of sample, accurate to 0.01g, count the number of particles, calculate the number of particles per gram of resin according to formula (1), and take the integer. A
Where: A
Particle size, N/g,
Number of particles, N;
Sample mass, g. Www.bzxZ.net
5.3 Determination of content of particles with black spots
5.3.1 Instrument
Balance: sensitivity 0.01g.
5.3.2 Operation steps
Weigh about 50g of sample, accurate to 0.02g, detect the particles with black spots, weigh them, and calculate their percentage content according to formula (2). (1)
Wherein: B-
Content of particles with black spots, %;
Sample mass, g;
Mass of particles with black spots, g.
HG 2349-92
ml×100
The absolute difference between the two values of parallel determination should not be greater than 0.1%. Take the arithmetic mean as the determination result and round it to the first decimal place. 5.4 Determination of loss on drying
5.4.1 Instrument
Vacuum oven: temperature control accuracy ±2℃;
b. Balance: sensitivity 0.001g;
Weighing bottle: low type;
d. Dryer.
5.4.2 Operation steps
(2)
In a weighing bottle that has been weighed to a constant weight, weigh about 10g of sample, accurate to 0.001g, place it in a vacuum oven at 80±2℃ (pressure less than 100kPa), dry it for 4h, take it out and put it in a dryer to cool to room temperature, weigh it, and calculate its drying loss according to formula (3). X=m:=m x100
Where: X——drying loss,%;
Weighing bottle mass, g;
Total mass of sample and weighing bottle before drying, g; m3
Total mass of sample and weighing bottle after drying, g. The absolute difference between two values measured in parallel should not be greater than 0.1%. The arithmetic mean is taken as the measurement result and rounded to the first decimal place. 5.5 Determination of viscosity number
Select the dried sample in 5.4, use sulfuric acid as solvent, and measure it according to the method specified in GB12006.1. 5.6 Determination of melting point
Measure it according to the method specified in GB4608. 5.7 Determination of relative density
Measure it according to the specific gravity bottle method specified in GB1033. 5.8 Determination of tensile strength (tension strength) and elongation at break 5.8.1 Test steps
Measure it according to the method specified in GB1040, select type 1 specimen, and the test speed (no load) shall be as specified in B. 5.8.2 Data processing
The test results are expressed as the arithmetic mean of each group of samples. The difference between the measured value of each sample and the mean value shall not exceed 15%. Values greater than 15% shall be discarded, but the number of discarded measured values shall not exceed 40% of the total number of samples, otherwise the test shall be retested. 5.9 Determination of flexural strength
5.9.1 Test steps
The test is carried out by the method specified in GB1042. 5.9.2 Data processing is carried out in accordance with the steps of Section 5.8.2. 5.10 Determination of impact strength (notch)
5.10.1 Test steps
The test is carried out by the method specified in GB1043, and the test specimen is a large notch specimen. 5.10.2 Data processing is carried out in accordance with the steps of Section 5.8.2. 362
6 Inspection rules
6.1 Each batch of products is considered as one kettle.
HG2349—92
6.2 The producer and user adopt different sampling methods. 6.2.1 Sampling method of producer
The producer adopts the method specified in Article 5 of GB2547 to take samples, and the sample volume is about 16kg, of which the sample volume for physical and chemical properties test is about 0.3kg, and the sample volume for mechanical properties test is about 15kg. After mixing the obtained samples evenly, put them into a clean and dry container for inspection. Indicate the factory name, product name, batch number, production date, and sampling date. 6.2.2 Sampling method of user and arbitration party
The number and volume of samples are determined by the method specified in Article 6.6 of GB6678. The sampling is carried out by the method specified in Article 2.3 of GB6679.
6.3 Each batch of products must be inspected by the quality inspection department of the manufacturer, and it is ensured that all products leaving the factory meet the technical requirements specified in this standard.
6.4 The particle size, content of particles with black spots, loss on drying, and viscosity in 4.1 and Table 2 of this standard are factory inspection items, and melting point, relative density, elongation at break, flexural strength, and impact strength are random inspection items; tensile strength is a factory inspection item for superior products, and a random inspection item for first-class products and qualified products. The random inspection items shall be inspected at least once every six months. Type inspection shall be carried out in accordance with the provisions of Article 6.6.1 of GB1.3. 6.5 The user has the right to inspect the received products in accordance with the provisions of this standard. If re-inspection is required, it should be submitted to the manufacturer within one month of receiving the product.
6.6 Inspection results If a certain technical indicator does not meet the requirements of this standard, samples should be taken from twice the packaging of the batch of products to re-inspect the unqualified items, and the grade should be re-determined based on the re-inspection results. 6.7 When the supply and demand parties have any objections to the product quality, the two parties shall negotiate to resolve the dispute or the statutory quality supervision and inspection department shall conduct arbitration. 7 Marking, packaging, transportation, storage
7.1 Marking
Each package shall have a clear and firm mark indicating the product name, model, grade, batch number, net weight, production date and manufacturer name. Different color outer packaging or labels shall be used to indicate different models of products, red for type 09, green for type 11, and black for type 12. 7.2 Packaging
The product shall be packed with three layers of kraft paper or polypropylene woven bags on the outside and polyethylene film bags on the inside. The net weight of each bag is 25±0.25kg, and the total weight of every ten bags shall not be less than 250kg. Each batch of products shall be accompanied by an inspection report, and each package shall be accompanied by a certificate of conformity. 7.3 Transportation
During transportation, the product shall be protected from sun and rain, and the transportation vehicle shall be kept clean. During transportation, the packaging shall be prevented from being damaged. This product is a non-dangerous product.
7.4 Storage
This product should be stored in a dark, dry and ventilated place, not near heat sources. And stack according to the shape. The storage period of this product is 2 years from the date of leaving the factory. After the storage period, it should be inspected according to the provisions of this standard. If the inspection results meet the requirements of this standard, it can still be used.
Additional instructions:
HG2349—92
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Plastic Resin Products Branch of the National Plastic Standardization Technical Committee (SC 4). This standard was drafted by Shanghai Celluloid Factory. The main drafter of this standard is Xu Bingyi.
From the date of publication of this standard, the former standard HG2-869-76 (81) "Polyamide 1010 Resin" issued by the Ministry of Chemical Industry of the People's Republic of China will be invalid.
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