The gas phase rustproof packaging makes the metal rust completely goodbye to buttering and other means. Nowadays, strict military, precision machinery, hardware tools, measuring tools, electrical and electronic equipment, electromechanical products are used in processing, warehousing, maritime transportation, and high-quality anti-rust requirements for foreign-invested products. The application of gas-phase rust-proof packaging is coming. more.
The principle of gas phase rust prevention is the use of Volatile Corrosion Inhibitor (VCI). VCI can be directly vaporized at normal temperature, reaching a saturated vapor state in a closed environment, and its molecules are adsorbed to the metal surface, and complex physical chemistry The change forms a dense transparent protective film of only a few molecules thick, preventing the metal from being corroded. This protective film is insoluble in water and is not easily dissolved or destroyed by water vapor. After the sublimation of the gas phase anti-rust molecules is gas, there is no hole, no matter how complicated the shape of the metal surface, the anti-rust effect can be achieved. The gas phase rustproof plastic film is made of a polyolefin resin and is added with a volatile corrosion inhibitor, a vapor phase corrosion inhibitor (hereinafter referred to as VCI), by a certain process.
Labthink is an excellent provider of inspection instruments and inspection services, followed by an introduction to the quality of gas phase rust-proof packaging materials. In order to enable the production and use units related to rust-proof packaging to deeply understand the quality control projects and means.
The detection of the packaging material-Volatile corrosion inhibiting film requires the implementation of the GB/T 19532-2004 national standard method for the test. The standard is modified by the US military specification MII.P RF-22019D "Vapor Phase Corrosion Inhibitor Treatment". Flexible and weldable transparent barrier material" and referenced. Test items and standards mainly include: GB / T 6672 Plastic film and sheet thickness measurement mechanical measurement method (GB/T 6672-2001, idt ISO 4593), GB / T 8809-1988 plastic film anti-pendulum impact test method, GB /T 11999-1989 Test method for tear resistance of plastic film and sheet, GJB 2493-1995 Corresponding test items for general specifications for heat-sealing flexible oil- and moisture-proof barrier materials.
In this case, we introduce Labthink related detectors to introduce related projects:
First, thickness detection:
Whether the thickness of the gas phase rustproof plastic film is uniform or not is the basis for detecting various properties of the rustproof plastic film. The uneven thickness will not only affect the tensile strength and barrier properties of the film, but also affect the subsequent processing of the film. There are various methods for measuring the thickness. The thickness of the gas-phase rust packaging material is measured by the mechanical measurement method of GB / T 6672 plastic film and sheet thickness (GB/T 6672-2001, idt ISO 4593)
The thickness measurement can be carried out by Labthink's CHY-C2 and CHY-CA thickness gauges, which are high-precision testers that meet the requirements for gas-phase rust-proof plastic film thickness detection. The test resolution is up to 0.1 micron; in addition to the high precision and high efficiency of the CHY-C2 type, the CHY-CA thickness gauge adopts the automatic forward drive system for measuring samples, which greatly improves the test efficiency and fully satisfies the user. Requirements for continuous and efficient testing.
Second, the gas phase rust-proof plastic film anti-pendulum impact test
The control of the impact resistance of the gas phase rustproof plastic film can prevent the damage of the packaging surface due to insufficient toughness, and effectively prevent the product from being damaged due to the impact resistance or poor drop performance of the gas phase rustproof plastic packaging material in the circulation part. Rusty.
The anti-pendulum impact test of gas phase rust-proof plastic film is carried out according to GB/T 8809-1988 "Plastic film anti-pendulum impact test method", Labthink Languang's FIT-01 film impact tester performs this standard, and the instrument and other The instrument is more advanced than the function. For example, the sample clamping and the release of the pendulum are pneumatically controlled. The similar instruments currently seen are manual clamping samples; the pneumatic clamping is fast and efficient, and the clamping force on the four-shot of the film is uniform. It is not easy to produce slippage of the sample during impact and affect the accuracy of the test results. In addition, the precision is as high as 0.001J. The film impact tester that can be seen at present is basically mechanical. The data is read from the scale of the dial with low precision.
Third, the gas phase rust-proof plastic film tear resistance test gas phase rust-proof packaging material may be torn by external force during storage and transportation, sufficient tear propagation resistance can reduce the transmission of tear, thus avoiding leakage The problem of rust coming. The tear resistance test of the gas phase rustproof packaging material was carried out by the Elmendorf method, and the GB/T 11999-1989 (I SO 6383-2) plastic film and sheet tear resistance test method was carried out. Labthink's SLY-S1 tear meter can be used for testing. The instrument uses computer control and display, as well as computer level adjustment technology to ensure accurate and reliable test data; the unique "three-circle" analysis technology can help users to visually analyze and evaluate data.
Fourth, sealing performance testing
 Anti-rust packaging is extremely important due to its strict requirements, and sealing performance testing is extremely important. If a leak occurs, the anti-rust effect will be lost. The term "sealing property" refers to the property of the packaging bag to prevent other substances from entering or the contents from escaping. There are two methods for commonly used detection methods:
 Anti-rust packaging is extremely important due to its strict requirements, and sealing performance testing is extremely important. If a leak occurs, the anti-rust effect will be lost. The term "sealing property" refers to the property of the packaging bag to prevent other substances from entering or the contents from escaping. There are two methods for commonly used detection methods:
1. Water decompression method:
    The method can be tested according to GB/T 15171-94 "Test Method for Sealing Performance of Flexible Packages". Here, the MFY-01 of Labthink is used as an example. The instrument adopts the equipment of water decompression principle. The test process is as follows: Put the appropriate amount of distilled water in the tank, put the package into the vacuum tank and put it on the lower side of the pressure plate to completely immerse the package into the water; then set the vacuum pressure and time of the test, generally set the vacuum degree to 20, 30, 50, 90 kPa and so on. The vacuum was stopped when a certain degree of vacuum was reached, and the time for maintaining the vacuum was 30 seconds. The test is started, the vacuum chamber is evacuated, and the sample immersed in water is subjected to internal and external pressure difference, and the gas escape condition in the sample is observed to determine the sealing performance of the sample.
2 , positive pressure detection method
Take Labthink's LSSD-01 leak and seal strength tester as an example. The instrument is tested by positive pressure. By applying pressure to the inside of the package, the pressure resistance, sealing degree and leakage index of the flexible package are detected, thereby achieving the purpose of detecting the integrity and sealing strength. During the test, high-pressure gas is injected into the rustproof packaging to quantitatively check the sealing performance and leakage of the vacuum crisper.
 V. Barrier performance test
  Barrier refers to the barrier effect of packaging materials on permeates such as gases and liquids. The entry of oxygen will increase the possibility of oxidative corrosion of the metal, while the barrier properties of water vapor are more important.
  Barrier refers to the barrier effect of packaging materials on permeates such as gases and liquids. The entry of oxygen will increase the possibility of oxidative corrosion of the metal, while the barrier properties of water vapor are more important.
The detection barriers are respectively implemented in GB 1038 "Plastics film and sheet gas permeability test method - differential pressure method" and GB 1037 "plastic film and sheet water vapor permeability test method - cup method", can use Labthink blue light VAC series Differential pressure gas permeation instrument or PERME OX2/230 oxygen transmission rate test system, water vapor barrier performance can be used Labthink blue light TSY-T series moisture permeability tester or PERME W3/330 water vapor transmission rate test system.
The above is a brief introduction of the gas phase anti-rust packaging testing project and principle. The specific testing methods, procedures, requirements and test data are not introduced here. Labthink hopes to use this article to introduce more communication with industry colleagues. communicate with.
Jinan Languang Electromechanical Technology Co., Ltd.
: Jinan Languang Market Department
:
ICU Arm bridge for the hospital ICU wards, intensive care unit of modern medical rescue necessary auxiliary equipment ,mainly by the bridge dry and wet sections, characterized by the separation of wet and dry is reasonable structure ,allocation of landing and taking off the wet paragraph flexible and fluid infusion pump rack frame and infusion pump mount .
Paragraph can be equipped with wet and dry conditioning off and landing platform for the medical care equipment ,in the segment, respectively ,of wet and dry oxygen, air attracted by strength of electricity ,the network input terminals can be configured in the health care workers and staff body of tower.
The moving parts adopts Damping Friction Brake system, while also matching your request in accordance with paging communications ,monitoring ,video telephony, background music ,as well as teaching and long-distance diagnosis system.
Double Arm Electric Medical Pendant
Double Arm Electric Medical Pendant,Ceiling Pendant,Double Pendant Light,Electric Medical Pendant
Shandong qufu healthyou Medical Technology co.,Ltd , https://www.kangerjian-medical.com