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Moisture permeability is an important factor affecting the performance and service life of PVC sheets. The moisture permeability of PVC sheet is closely related to its molecular structure, manufacturing process and use environment. By testing the moisture permeability of PVC sheets, it is possible to understand how they perform in the environment in which they are used, so as to evaluate their suitability and service life.
Inspecting the moisture permeability of PVC sheets can help identify potential quality issues. If the moisture permeability of PVC sheet is too high, it may cause moisture to accumulate inside the material, causing problems such as deformation and mildew. Through detection, these problems can be detected in time, so that corresponding measures can be taken to improve and optimize. Therefore, it is very important to test the moisture permeability of PVC sheets.
Introduction to GB T 1037 Standard PVC Sheet Water Vapor Transmission Rate Tester
Based on the principle of cup method, GB T 1037 standard PVC sheet water vapor transmittance tester is a professional water vapor transmittance tester for PVC sheets, which is suitable for the determination of water vapor transmittance rate of plastic films, composite films and other films, sheet materials and various materials in the fields of medical treatment and building materials. Through the determination of water vapor transmission rate, the technical indicators of control and adjustment of materials can be achieved to meet the different needs of product applications.
GB T 1037 Standard PVC Sheet Water Vapor Transmission Rate Tester Test Principle
Using the test principle of the weighing method of the breathable cup, at a certain temperature, a specific humidity difference is formed on both sides of the sample, and the water vapor enters the dry side through the sample in the breathable cup, and the water vapor transmission rate and other parameters of the sample are obtained by measuring the change of the weight of the breathable cup with time.
GB T 1037 Standard PVC Sheet Water Vapor Transmittance Tester Technical Parameters
Indicator parameters. Test range 01 10,000 g m2·24h (regular) (weight gain mode can be customized).
Number of specimens: 1 4 pieces (data are independent) (can be customized 8).
The system resolution is 00001 g
Test temperature: 10°C, 55°C (typical).
Temperature control accuracy 05°c
Test humidity: 10%RH 90%RH (relative humidity).
Humidity control accuracy 1%RH
Purging wind speed 05 ~ 2.5 ms (optional).
Test area 3318 cm2
Specimen thickness 3 mm (other thickness requirements can be customized).
Specimen size 72 mm
Connection size 6 mm polyurethane tubing.
Dimensions: 500 mm (L), 500 mm (W), 550 mm (H).
Power supply AC 220V 50Hz
Net weight 42 kg
Product configuration. Standard configuration: main unit, professional software, communication cable, moisture permeable cup, gas drying device, automatic filter drying, sampler, quantitative dropper, gloves, micro printer.
Options: standard membrane, air compressor, drying container, 4A molecular sieve.
Remarks: The air source inlet of this machine is 6mm polyurethane pipe; Gas source and distilled water users shall provide their own.