This standard specifies the test method for the non-drip performance of plastic non-drip films. This standard is applicable to the test of the non-drip performance of plastic non-drip films produced by the internal mixing method. GB/T 19603-2004 Test method for non-drip performance of plastic non-drip films GB/T19603-2004 Standard download decompression password: www.bzxz.net

ICS 83.140.10
National Standard of the People's Republic of China
GB/T 196032004
Test method for drop-proof properties of drop-proof plastic films2004-11-30 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
2005-05-01 Implementation
GB/T19633—2004Www.bzxZ.net
There is no test method for drop-proof properties of drop-proof plastic films at home and abroad. The test method in this standard is determined on the basis of in-depth research on the test methods for drop-proof properties adopted by domestic and foreign plastic drop-proof film manufacturers and technical institutions, and has been verified by a large amount of test data. This standard is proposed by Shandong Quality and Technical Supervision Bureau. This standard is under the jurisdiction of the National Plastic Products Standardization Technical Committee. The issuing units of this standard: Shandong Product Quality Supervision and Inspection Institute, Shandong Plastic Products Testing Factory. The main drafters of this standard are Yang Xuejun, Wang Xingdong and Feng Guanmin. This standard is to be published.
: com1 Scope
Test method for non-drip performance of plastic non-drip film This standard specifies the test method for non-drip performance of plastic non-drip film. This standard is applicable to the test of non-drip performance of plastic non-drip film produced by internal mixing method. 2 Normative references
GB/T19603--2004
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all its amendments (excluding errata) or revised versions are not applicable to this standard. However, the parties who reach an agreement based on this standard shall study whether the latest versions of these documents can be used. For any undated referenced document, its latest version shall apply to this standard. GB/T2918-1998 Standard environment for state conditioning and testing of plastic specimens 3 Definitions
The following definitions apply to this standard.
Plastic drip-free film
Plastic film with drip-free performance made by blow molding, calendering, casting and other methods is called plastic drip-free film. 4 Principle
Water wets the surface of the film to form a water film, which gathers at a certain angle. When it gathers to a certain degree, it forms water droplets and drips. The speed of water droplets dripping reflects the size of the wetting tension on the surface of the film, that is, the drip-free performance of the film. The time for water droplets to drip is used to indicate the drip-free performance of the film.
5 Instrument
5. Drip-free tester
The drip-free tester is shown in Figure 1: The attachment hammer is shown in Figure 2. The unit is millimeter
Thermometer
Temperature-following wheel device
No-drip tester
Figure 1 Schematic diagram of no-drip tester
GB/T19603--2004
5.2 Stopwatch
Indicating pin 0. 1 s.
5.3 Thermometer
Range 0℃~100℃, graduation value 1℃
6 Test sample
Hole M10
Schematic diagram of pressure hammer
Cut three test samples of 450 mmX450 mm. The test samples should be flat and clean, and no wrinkles are allowed. 7 Sample state adjustment and test environment
Unit: mm
The sample state is adjusted in the standard environment of 23°C ± 2°C and 50% 110% relative humidity as specified in GB/T2918 for not less than 24 hours, and the test is carried out in this environment. 8 Test steps
8.1 A sufficient amount of distilled water should be added to the water tank of the drip-free tester, and the water surface should be 150 mm away from the top of the tester. Turn on the tester and keep it constant at 50°C ± 2°C
8.2 Use a clamp to stretch the sample flat, and then place it on the top of the tester. Place the pressure hammer at the center of the sample and press down 40 mm ± 0.5 1nml to make the membrane surface about 15° with the horizontal direction, and start the stopwatch at the same time. 8.3 Observe the water droplet aggregation on the inner surface of the sample, and record the time when the first drop of water drops falls, which is the initial drop time. 8.4 After 10 minutes of the initial drop, record the time required for 10 consecutive drops of water drops to fall. Carry out the test three times in succession and take the average value. 8.5 Repeat the above steps and measure the initial drip time and the time required for 10 consecutive drops of water to drip for the other two samples respectively. 9 Expression of test results
The test results are expressed as the average value of the test results of three samples. 10 Test report
The test report should include the following contents:
a) This standard number or standard name;
b) Sample name,
Test environment:
d) Test results
Test period:
Tester;
Auditor.
GB/T19603-—2004
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