The VOC release chamber is mainly used to detect the release of formaldehyde and volatile organic compounds (VOCs) in building materials, furniture and other products, and evaluate the environmental performance of the products by simulating real environmental conditions.
The VOC release chamber simulates the state of materials in actual use environments by accurately controlling parameters such as temperature, humidity, and airflow velocity inside the chamber, and quantitatively analyzes the concentration of volatile organic compounds such as formaldehyde and benzene derivatives released by materials (such as car interiors, furniture, artificial boards, textiles, etc.).
The working principle of VOC release chamber is to simulate the temperature, humidity, air flow rate and other conditions in the actual usage environment, and detect the VOC release of materials under specific conditions.
Main functions
Test material release characteristics: Provide a standard testing environment (temperature, humidity, airflow velocity, etc.), simulate actual indoor usage conditions, and detect the pollutant release rate and release characteristics of products such as artificial boards, furniture, textiles, etc.
Classification of product levels: Classify products into different environmental protection levels based on their release characteristics to assist companies or regulatory authorities in developing compliance standards.
Application areas: Widely used for environmental testing of building interior decoration materials, office furniture, artificial wood panels, carpets and other products.
working principle
Environmental simulation: The cabin adopts a closed design, equipped with temperature and humidity sensors, air circulation system, and airflow control device, which can accurately simulate indoor environment (such as temperature of 20-60 ℃, humidity of 30% -70%, air exchange rate of 0.2-1.0 times/hour).
Static sampling and dynamic blowing
Static sampling: Place the material to be tested into the cabin, seal it, and collect an air sample to analyze the initial VOC concentration.
Dynamic blowing: By continuously introducing clean air to accelerate the release of material VOCs, combined with equipment such as gas chromatography-mass spectrometry (GC-MS), the release changes at different time points are determined.
Background concentration control: The cabin is equipped with purification systems (such as activated carbon filtration and photocatalytic oxidation) to reduce the background VOC concentration to a very low level (usually<1 μ g/m ³), ensuring the accuracy of test results.