A kind of formaldehyde eliminating agent and preparation method thereof, adhesive, wood product and wood-based panel

A formaldehyde elimination agent and adhesive technology, applied in the direction of manufacturing tools, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of wood discoloration, formaldehyde emission rebound, etc., and achieve the effect of complete reaction

Active Publication Date: 2017-06-23
潘春尧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are many kinds of formaldehyde removal products on the market. They often simply use urea solution or ammonia solution to remove formaldehyde. Using such products in the production process of wood-based panels can achieve the effect of removing formaldehyde in a short period of time, but after a period of time The amount of formaldehyde released will rebound, and if it is used on some light-colored wood, it will easily cause the problem of discoloration of the wood

Method used

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  • A kind of formaldehyde eliminating agent and preparation method thereof, adhesive, wood product and wood-based panel
  • A kind of formaldehyde eliminating agent and preparation method thereof, adhesive, wood product and wood-based panel
  • A kind of formaldehyde eliminating agent and preparation method thereof, adhesive, wood product and wood-based panel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Add 64 parts by weight of pure water into the reactor and heat it, the water temperature is controlled at 70°C; add 2 parts by weight of formic hydrazide, stir while adding, until it is completely dissolved; then gradually add 0.1 parts by weight of dodecyl Stir the sodium sulfate evenly; finally add 5 parts by weight of urea and stir until it is completely dissolved; leave the resulting solution at room temperature to obtain the formaldehyde scavenger.

Embodiment 2

[0052] Add 78.45 parts by weight of pure water into the reaction kettle and heat it, the water temperature is controlled at 75°C; add 8.5 parts by weight of acetylhydrazine, and stir while adding it until it is completely dissolved; then gradually add 0.55 parts by weight of dodecylbenzene Stir the sodium sulfonate evenly; finally add 12.5 parts by weight of urea and stir until it is completely dissolved; let the resulting solution stand at room temperature to obtain the formaldehyde scavenger.

Embodiment 3

[0054]Add 75.9 parts by weight of pure water into the reaction kettle to heat, and control the water temperature at 78°C; add 6 parts by weight of dihydrazide-based compound, stir while adding, until it is completely dissolved; then gradually add 0.1 part by weight of Sodium dialkylbenzene sulfonate is stirred evenly; finally, 18 parts by weight of urea is added and stirred until it is completely dissolved;

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Abstract

The invention relates to a formaldehyde elimination agent and a preparation method thereof as well as an adhesive, a wooden product and an artificial board. The formaldehyde elimination agent comprises the following ingredients in parts by weight: 64-92.9 parts of pure water, 5-20 parts of urea, 2-15 parts of hydrazide compound and 0.1-1 part of an anionic surfactant. The formaldehyde elimination agent can be added into the adhesive and can be also sprayed on the wooden product and the artificial board. The formaldehyde elimination agent has the benefits as follows: on the basis of reaction between urea and formaldehyde, the hydrazide compound is added, so that the technical effect of no reverse reaction after reaction is realized; since the anionic surfactant is added, the reaction between effective ingredients in the product and formaldehyde in the artificial board is reinforced; the pH of the formaldehyde elimination agent is 7-9, the color of the wood material is not changed after the formaldehyde elimination agent is sprayed on the wood material with a light color, and the contents of formaldehyde in the adhesive, the artificial board and the wooden product reach the national compulsorily-executed health standard level.

Description

technical field [0001] The invention relates to a preparation for eliminating harmful chemical substances and a preparation method thereof, in particular to a formaldehyde elimination agent and a preparation method thereof, adhesives, wood products and wood-based panels. Background technique [0002] Most of the production of various wood-based panels for decoration uses urea-formaldehyde resin as an adhesive, because the adhesive has the advantages of low price, simple manufacture, and superior performance, which cannot be replaced by other adhesives. [0003] However, various wood-based panels made of urea-formaldehyde resins as adhesives, such as blockboard, plywood, medium density fiberboard, etc., always contain a certain amount of free formaldehyde in the board body, and these free formaldehyde will gradually form in the process of people's decoration and decoration. Released in the indoor air, causing pollution to the indoor environment. This is because urea-formalde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/30A62D3/00C09J11/06B27K5/00
Inventor 潘春尧
Owner 潘春尧
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