GB/T 30650-2014 Test Method for Low-temperature Operability of Petrolatum
Anti-corrosion Tape GB/T30650-2014 Standard compression package decompression password: www.bzxz.net This standard specifies the requirements for instruments, equipment, sampling, test panels, test steps, result evaluation and test reports for the test method for low-temperature operability of petrolatum anti-corrosion tape. This standard is applicable to the test of the construction adaptability of petrolatum anti-corrosion tape under ambient temperature conditions of -20 ℃ ~ 0 ℃.
This standard was drafted in accordance with the rules given in GB/T1.1-2009.
This standard was proposed by the China Petroleum and Chemical Industry Federation.
This standard is under the jurisdiction of the National Anti-corrosion Standardization Technical Committee (SAC/TC381).
This standard was drafted by: China Industrial Anti-corrosion Technology Association, Institute of Oceanology, Chinese Academy of Sciences.
The main drafters of this standard are: Hou Baorong, Zhao Xia, Wang Jing, Wang Xiutong, Zheng Meng, Li Yantao, Duan Jizhou, Yang Lihui, Zhu Qingjun, Zhang Jie, Wang Hao, Gao Yang.
The following documents are indispensable for the application of this document. For any dated referenced document, only the dated version applies to this document. For any undated referenced document, the latest version (including all amendments) applies to this document.
GB/T9271 Standard test plate for paints and varnishes
HJ/T373—2007 Technical specification for quality assurance and quality control of stationary pollution source monitoring (trial implementation)

ICS25.220.99
National Standard of the People's Republic of China
GB/T30650--2014
Test method of operability of petrolatum tape at low temperature2014-12-31Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of the People's Republic of China
2015-07-01Implementation
This standard was drafted in accordance with the rules given in GB/T1.12009. This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Anti-Corrosion Standardization (SAC/TC381). Drafting units of this standard: China Industrial Anti-Corrosion Technology Association, Institute of Oceanology, Chinese Academy of Sciences. GB/T30650—2014
The main drafters of this standard are: Hou Baorong, Zhao Xia, Wang Jing, Wang Xiutong, Zheng Meng, Li Yantao, Duan Jizhou, Yang Lihui, Zhu Qingjun, Zhang Jie, Wang Wu, Gao Yang.
1 Scope
Test method for low temperature operability of petrolatum anti-corrosion tape GB/T30650-—2014
This standard specifies the requirements for instruments, equipment, sampling, test plates, test steps, result evaluation and test reports for the test method for low temperature operability of petrolatum anti-corrosion tape.
This standard is applicable to the test of the construction adaptability of petrolatum anti-corrosion tape under ambient temperature conditions of 20C~0℃. 2 Normative references
The following documents are indispensable for the application of this document. For all referenced documents with dates, only the versions with the dates are applicable to this document. For any undated document, its latest version (including all amendments) shall apply to this document GB/T9271
HJ/T 373
3 Terms and Definitions
Standard Test Plate for Paints and Varnishes
007 Technical Specification for Quality Assurance and Quality Control of Monitoring of Stationary Pollution Sources (Trial) The following terms and definitions shall apply to this document
Petrolatum Anti-Corrosion Tape
Petrolatum Tape
Petrolatum Tape is a tape-shaped anti-corrosion material made of non-woven fabric as a carrier, impregnated with a special mineral fat containing a composite rust inhibitor, a laxative agent, a lubricant, a filler, etc. Operability at low temperature operability of petrolatum anti-corrosion tape under low temperature (-20℃～0℃) Whether the tape can be normally constructed under low temperature (-20℃～0℃) 3.3
Peel Strength strength
The force required to parallel peel off the unit width petrolatum anti-corrosion tape from the surface of the metal plate 4 Reagents and materials
4.1 Acetone or ethanol solution: analytical grade.
4.2 Steel plate: Carbon steel plate in accordance with GB/T9271, size 125mm×50mm×1.5mm~2.0mm. 4.3 Polyester film: size 25mm×150mm×25μm. 4.4 Water-resistant sandpaper: 150 cup, 250#, 300#. 5 Instruments
5.1 Constant temperature and humidity chamber: range of -20℃～100℃, temperature deviation ≤±2℃. 5.2 Low temperature thermometer: range of -30℃~10℃, score of 0.1℃. 5.3 Hygrometer: range is 0~100%, humidity deviation ≤±2%1
GB/T30650—2014
5.4 Tensile testing machine: range does not exceed 1kN, accuracy is 0.01N. 6 Sampling
6.1 Test specimen
6.1.1 Take a product with a length of 1000mm and a width of 100mm and roll it into a roll with an inner diameter of less than 30mm as a visual inspection sample (more than 10 turns). 6.1.2 Cut a small square specimen of 25mmX150mm as a peel strength test sample. 6.2 Test plate preparation
6.2.1 Use 150#250#, 300# water-resistant sandpaper in turn to evenly grind the steel plate in a direction parallel to the length of the steel plate (4.2). The trace of the next sandpaper should completely cover the trace of the previous sandpaper, and only the trace of 300 sandpaper is left at the end. 6.2.2 Wipe off dirt and foreign matter with gauze containing acetone or ethanol solution. 6.2.3 Dry in a desiccator for later use.
6.2.4 Stick the peel strength test specimen (6.1.2) on one end of the treated steel plate, with the contact surface size of approximately 25mm×50mm, as shown in Figure 1. 6.2.5 Spread a polyester film on the entire surface of the specimen, and use a roller with a width greater than 30mm to go back and forth on the specimen once to completely stick the polyester film to the surface of the specimen.
7 Test steps
7.1 Peel strength
7.1.1 Prepare 6 parallel test panels as specified in 6.2. 7.1.2 Place the above 3 test panels under standard conditions of temperature (23±2)℃ and humidity (50±5)% for at least 2h. 7.1.3 Place one end of the petrolatum anti-corrosion tape of the adjusted test plate (7.1.2) on the upper fixture of the universal tensile testing machine, and clamp one end of the metal plate on the lower fixture.
7.1.4 Stretch at a uniform speed of (300 ± 30) mm/min. When the petrolatum anti-corrosion tape begins to separate from the metal plate, record the tensile force reading at this time. 7.1.5 Repeat the above steps to test the other two samples, calculate the arithmetic mean of the three tensile forces, and record it as F. 7.1.6 Place the remaining three samples in a constant temperature box at (-5 ± 2) ℃ (or other temperature agreed by both parties) and adjust the state for at least 2 hours. 7.1.7 Repeat the test of three samples according to steps 7.1.3 to 7.1.4, take the arithmetic mean of the tensile force, and record it as F1. 7.1.8 The time from taking each sample out of the constant temperature and humidity box to the end of the test shall not exceed 3mi. 7.2 Visual inspection
Adjust the whole roll of sample (6.1) in a thermostatic box at (-5 ± 2)°C (or other temperature agreed by both parties) for at least 2 h. 7.2.2bzxz.net
Spread out the adjusted sample completely within 3s to 5s. 7.2.3
Visually observe whether there are any fractures and composite cracks on the surface of the petrolatum anti-corrosion tape. 8 Results and judgment
8.1 Result expression
8.1.1 Peel strength. Calculate according to formula (1): F
Where:
o Peel strength, in Newton per meter (N/m); 2
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F The tensile force when the petrolatum anti-corrosion tape begins to detach from the metal plate, in Newton (N); 6——The value of the width of the sample, in meter (m). 8.1.2 According to formula (1), respectively from F. Calculate . , calculate a1 from F. 8.1.3 Calculate (a. - a) /. .
8.2 Determination
GB/T30650-2014
8.2.1 According to the provisions of 4.6.2.2 of HJ/T373-2007, calculate the relative deviation of the peel strength of each group of 3 parallel specimens, which should not exceed 5%; otherwise it is judged as unqualified.
8.2.2 (. - g1) / g. should be less than 50%, otherwise it is judged as unqualified. 8.2.3 Visual observation should not show any visible fracture or composite cracking phenomenon; otherwise it is judged as unqualified. The unit is millimeter
a) Side
Description:
1 Metal plate:
2—Polyester film;
3—Sample
9Test report
The test report shall at least include the following contents:
Figure 1 Schematic diagram of peel strength test panel
a) Test conditions;
b) Description of the sample, including length, width and thickness; c) Comparison photos of samples before and after the test or detailed textual description, d) Any differences from the prescribed test method; e) Test results and judgment;
|) Test date;
g) Tester,
h) Test location.
b) Plane
GB/T30650-2014
Print date: March 23, 2015 F055
People's Republic of China
National Standard
Test method for low temperature operability of petrolatum anti-corrosion tape GB/T30650-2014
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