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Detection method for release amount of formaldehyde of impregnated paper

A technology of formaldehyde emission and detection method, which can be used in measurement devices, instruments, scientific instruments, etc., can solve the problems that the formaldehyde emission cannot be guaranteed to meet the standard and cannot be truly reflected.

Inactive Publication Date: 2015-07-01
曾敏华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A large number of experimental data show that due to the influence of temperature and pressure, as well as the influence of the amount of glue impregnated on the impregnated film paper, the formaldehyde emission of the impregnated film paper measured according to GB / T 28998 cannot truly reflect the impact of the impregnated film paper after high temperature pressing. The actual situation of formaldehyde emission, that is to say, the formaldehyde emission of impregnated film paper is qualified according to GB / T 28998, and there is no guarantee that the formaldehyde emission of the finished product after pressing will meet the standard

Method used

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Embodiment Construction

[0014] A method for detecting the amount of formaldehyde released from impregnated paper provided in this embodiment comprises the following steps:

[0015] A. Prepare the impregnated paper test piece and the film used to pad the paper to be tested for formaldehyde. The size is consistent with the size of the small hot press machine used. The film used must be able to withstand high temperature and not contain formaldehyde, and its high temperature means at least not lower than 198°C;

[0016] B. The small hot press is heated up, and the next step is performed when the temperature reaches the required requirement, and the required temperature is at least 100°C;

[0017] C. Set the process parameters of hot pressing, the temperature is 195°C±3°C, the pressure is 2.0Mpa±0.1Mpa and the time is 30s±1s;

[0018] D. Place the film and impregnated paper on a small press for pressing, both sides must be pressed;

[0019] E. Cool the impregnated paper after pressing;

[0020] F. Cu...

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Abstract

The invention discloses a detection method for the release amount of formaldehyde of impregnated paper. The detection method comprises the following steps: (A) preparing an impregnated-paper test piece and a thin film; (B) raising the temperature of a small pressure machine; (C) setting parameters of a hot-pressing process; (D) correspondingly putting the thin film and the impregnated paper on the small pressure machine to carry out pressing and attachment on both surfaces; (E) cooling the impregnated-paper test piece after pressing and attachment; and (E) cutting a sample, sealing, balancing and then carrying out detection. The detection method disclosed by the invention has the advantages that the release amount of the formaldehyde of the impregnated paper is detected by simulating the pressing and attaching conditions of a melamine board, and the release amount of the formaldehyde of the impregnated paper pressed and attached at high temperature can be really and objectively reflected.

Description

technical field [0001] The invention relates to a method for detecting formaldehyde emission from impregnated paper. Background technique [0002] With the improvement of living standards, people are more pursuing environmental protection, and the requirements for formaldehyde emission of decorative materials and wood products are becoming more and more stringent. However, the existing detection methods are still questionable and cannot fully meet people's needs. At present, the standard for impregnated film paper in my country is GB / T 28995-2012 "Special paper for wood-based panels". , Width (50±1) mm film paper test piece, hang the test piece and place it in a blast drying oven at 170°C for 15 minutes, then put it in a desiccator and place it in an environment with a room temperature of 20°C to 25°C to cool for 1 hour, Then, measure the amount of formaldehyde released according to 4.59 in GB / T 17657. In the actual production process of facing wood-based panels, the impreg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
Inventor 曾敏华
Owner 曾敏华