Nondestructive testing device of formaldehyde emission from furniture product and nondestructive testing method thereof

Abstract

The invention relates to a nondestructive testing device of formaldehyde emission from furniture product and a nondestructive testing method thereof. The nondestructive testing device comprises an adjustable telescoping bracket, the bracket is externally covered with a PVC film, and seal plates are arranged between two adjacent telescoping bracket feet for compressing the PVC film to form airtight space inside the PVC film. The nondestructive testing method comprising the following steps: (1) the to-be-detected product is arranged in the airtight space formed by the PVC film, the telescoping bracket and the seal plates; (2) an absorption vessel with distilled water is arranged right below the to-be-detected product for 8-12 hours; (3) the absorption vessel is taken out, and acetylacetone spectrophotometry is carried out on the absorption liquid inside the vessel to detect the concentration of formaldehyde. The nondestructive testing device has the advantages of reasonable structure, low manufacture cost and strong adaptability; can be adjusted according to the volume and shape of the furniture product, and can obtain the formaldehyde emission data of furniture product without destroying furniture product; in addition, the nondestructive testing device has good reproducibility of testing results, and can actually reflect the formaldehyde emission condition in practical use.

Description

technical field [0001] The invention relates to a test device and a detection method for formaldehyde emission of furniture products, in particular to a nondestructive detection device and a nondestructive detection method for formaldehyde emission of furniture products. Background technique [0002] At present, the methods for detecting formaldehyde emission from domestic furniture are only the dryer method in GB 18584-2001 "Limits of Harmful Substances in Wooden Furniture for Interior Decoration Materials" and the climate chamber in QB1952.2-2004 "Soft Furniture Spring Mattress" Law. Among them, the detection method of formaldehyde emission in GB 18584-2001 national standard is to sample according to the proportion of furniture materials, and the sampling quantity is 150mm×50mm×10 pieces, so the whole furniture needs to be destroyed, and the reproducibility of test results is relatively poor. The QB1952.2-2004 standard only stipulates the amount of free formaldehyde relea...

AI Technical Summary

Problems solved by technology

Among them, the detection method of formaldehyde emission in the GB 18584-2001 national standard is to sample according to the proportion of furniture materials, and the sampling quantity is 150mm×50mm×10 pieces, so the whole furniture needs to be destroyed, and the reproducibility of the test results is relatively poor

The QB1952.2-2004 standard only stipulates the release of free formaldehyde. The test is to take a 500mm×800mm sample on the mattress for the test. After the test, the mattress is also damaged and cannot be used.

In this way, on the one hand, resources are wasted, and the cost of testing for enterprises is increased, which cannot truly reflect the release of harmful substances in furniture products. On the other hand, consumers cannot accurately know whether the release of harmful substances in the products they use is up to the standard.

In foreign countries, the non-destructive testing method of formaldehyde emission of furniture products generally uses the constant temperature and humidity convection climate chamber test method. This method can simulate the climate treatment of the furniture as a whole to evaluate its formaldehyde emission performance, but this test equipment is bulky and expensive. , the operating cost is high, and the test chambers with various volumes and airflow indicators are required for various styles of furniture. At the same time, this test method needs to transport the whole furniture to the designated place and put it into the test box for testing, which consumes a lot of manpower, material resources and energy, and meets the national demand for energy saving and consumption reduction.

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