A kind of rapid determination method of adhesive or coating moisture and total volatile organic compound content
A technology for rapid determination of volatile organic compounds, applied in the field of analysis and detection of decoration materials, can solve the problems of small sampling volume of test samples, complex configuration process, human health threats, etc., achieve high accuracy, high efficiency of the determination process, and low cost of consumables Effect
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Embodiment 1
[0082] This embodiment relates to a method for rapid determination of moisture content and total volatile organic compounds in adhesives or coatings.
[0083] This method is illustrated by taking a test channel as an example, such as Figure 4 shown.
[0084] like figure 2 as well as Figure 4 As shown, in order to ensure the constant weight of the moisture measuring device, each test channel also includes before the test:
[0085] Put the first evaporation device 11 and the second evaporation device 12 into the constant temperature heating device of the third set temperature and dry to constant weight, the mass difference before and after the drying process is not more than 0.3 mg, and record the experiment of the first evaporation device 11 The pre-mass and the experimental pre-mass of the second evaporation device 12 .
[0086] Please refer to figure 1 , the adhesive or coating moisture and total volatile organic compound content rapid determination method of the pres...
specific Embodiment
[0114] Specific embodiment: after the test sample is fully stirred or shaken, accurately weigh 1.5-2.0 grams into the first evaporation device 11 with constant weight in advance, rotate the first evaporation device 11, and make the test sample as flat as possible. The inner wall of the first evaporation device 11 is immediately sealed with an evaporation bottle stopper at both ends of the first air inlet and the first air outlet of the first evaporation device 11 for use. No test sample is added in the second evaporation device 12, which is used for the blank control test.
[0115] 3. Desiccant activation:
[0116] The desiccant activation process includes:
[0117] Use 3A zeolite molecular sieve as desiccant;
[0118] The 3A zeolite molecular sieve is activated by baking in a muffle furnace, the baking temperature is 350°C-400°C, and it is baked under one atmosphere for 8 hours;
[0119] Or use a vacuum pump to evacuate the muffle furnace, the baking temperature is 150°C, ...
Embodiment 2
[0152] Please refer to Figure 3 to Figure 6 , This embodiment relates to a rapid determination device for the content of adhesive or paint moisture and total volatile organic compounds.
[0153] like figure 2 As shown, for the same test sample, the rapid assay device includes providing a set of test passages. In the heating device 3, multiple sample testing channels are connected in parallel, for example, three sample testing channels are provided, so as to complete the determination experiment of detecting multiple test samples at the same time. The first sample testing channel includes a first evaporation device 11 and a first drying device 17 . The second sample testing channel includes a first evaporation device 12 and a first drying device 18 . The third sample testing channel includes a first evaporation device 13 and a first drying device 19 . The blank test channel includes a second evaporation device 26 and a second drying device 27 .
[0154] The rapid assay dev...
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