Method for determination of VOC content in man-made panels in 1m voc environmental climate chamber
Whether the man-made board meets the requirements of the national standard needs to go through a series of tests, in which the test will use a 1m voc environmental climate chamber. The following is the method for measuring the VOC content of the man-made board for reference.
Determination method of VOC release amount of artificial board:
A. Test preparation
Test sample: artificial board
Test equipment: 1m voc environmental climate chamber
Equipment Model: Huanyi Instrument HYV-1000
B. Conditions of 1m voc environmental climate chamber:
Temperature: (23±0.5)℃;
Relative humidity: (45±3)%;
Bearing rate: (1.00±0.02)㎡/m;
Air replacement rate: (1.00+0.05)h^-1;
Air velocity on the sample surface: 0.1~0.3 m/s.
C. Measurement method:
1. Install the adsorption tube on the thermal desorption instrument, and the airflow direction is opposite to the direction during sampling. The volatile components are desorbed from the adsorbent by heating, and are brought into the cold trap by the carrier gas for pre-concentration: then, the secondary thermal desorption is carried out, and it enters the capillary gas chromatograph through the transfer line. The transfer line temperature is close to the desorption temperature to prevent condensation of the analyte. Select the appropriate desorption time and gas flow rate to ensure that the desorption efficiency of n-hexadecane is better than 95%. Typical analytical conditions are as follows:
Analytical temperature: 260~280℃
Analysis time: 5~15 min
Gas flow rate: 30~50 ml/min
Cold trap maximum temperature: 280℃
Cold trap minimum temperature: ≤-30℃ (depending on the type of cold trap used)
Adsorbent in cold trap: Tcnax TA, 40~100 mg
Transfer line temperature: 220℃
2. Plot the standard curve
3. Sample Analysis
4. Calculate the results.
The above are the general steps for measuring the VOC content of man-made boards in the 1m voc environmental climate chamber. If you want to know the specific operation method, you can privately message the editor, or visit the official website of "Huanyi Instrument" to consult relevant technical personnel.
