A production process of flame-retardant low-aldehyde solid wood composite floor

A solid wood composite floor, low-aldehyde technology, applied in the joining of wooden veneers, wood processing appliances, aldehyde/ketone condensation polymer adhesives, etc. and other problems, to achieve the effect of avoiding the gel effect of the polymerization reaction, low formaldehyde residue, and long flame retardant time.

Active Publication Date: 2017-01-11
苏州大卫木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing floor adhesives do not have flame retardant properties, and formaldehyde release is relatively large

Method used

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  • A production process of flame-retardant low-aldehyde solid wood composite floor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The production of modified urea-formaldehyde resin includes the following stages:

[0024] Pre-polymerization stage: Add formaldehyde to the reaction kettle, adjust the pH value to 2.6-3 with formic acid, add polyvinyl alcohol with 0.5-0.6% formaldehyde weight, add urea with 15% formaldehyde weight, heat up to 55-57°C, and keep warm for reaction 35~37min.

[0025] Polymerization stage: adjust the pH value of the reaction solution to 8.6-8.8, add urea with 25% formaldehyde weight, add melamine with 1.5% formaldehyde weight, raise the temperature to 96-98°C, and keep warm for 90-92 minutes.

[0026] Post-polymerization stage: add 45-50% urea by weight of formaldehyde solution, add 2.5% melamine by weight of formaldehyde solution, lower the reaction temperature to 65-69°C, react for 91-95 minutes, then cool down to room temperature to obtain low formaldehyde residue Urea-formaldehyde resin.

[0027] Hot plate process: apply glue to the solid wood composite floor, the amo...

Embodiment 2

[0029] First, synthesize PPU flame retardant: Add polyol phosphate (PAPE) into a four-necked flask equipped with a stirrer, reflux condenser and thermometer, and heat it to 80-82°C in a water bath. Weigh a certain amount of toluene diisocyanate (TDI-80) and pour it into a constant pressure funnel. Add the material within 1 hour, keep the heat for 2-2.1 hours, then add a small amount of hydroxyethyl acrylate (HEA) dissolved in p-hydroxyanisole into the reaction system, and drop a few drops of dibutyltin dilaurate (DBTDL ), react for 2 to 2.1 hours, add some ethyl acetate (EAC) to reduce the viscosity during the cooling process, and discharge the material to obtain a PPU flame retardant.

[0030] Next, carry out the glue mixing process: take 100 parts of the modified urea-formaldehyde resin obtained in Example 1, take 15 parts of the PPU flame retardant obtained in this embodiment, take 0.1 part of polydimethylsiloxane, stir and mix evenly, and then add 10 parts of calcium carb...

Embodiment 3

[0033] Get 104 parts of the modified urea-formaldehyde resin obtained in Example 1, get 17 parts of the PPU flame retardant obtained in Example 2, get 0.1 part of tributyl phosphate, stir and mix evenly, add 14 parts of kaolin, and grind with a three-roll mill After 30 minutes, a flame-retardant low-aldehyde urea-formaldehyde resin glue was obtained. The hot plate process is the same as in Example 2.

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PUM

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Abstract

The invention provides a manufacturing technology for an anti-flaming low-aldehyde solid wood composite floor board. The manufacturing technology for the anti-flaming low-aldehyde solid wood composite floor board is divided to four processes: the preparation process for modified urea resin, the synthetic process of flame retardant phosphorus polyurethane, the glue-regulating technology process, and the hot plate technology process. The formaldehyde residual quantity of the anti-flaming low-aldehyde solid wood composite floor board is less than 0.3 mg / L, the anti-flaming effect of the used phosphorus polyurethane flame retardant is good, the poisonous gas is not released during the anti-flaming process, and the environment is protected. The production technology of the hot-pressing technology process uses the hot-cold pressing compound technology, and the continuous production of the solid wood composite floor board is achieved by two times of laminating.

Description

technical field [0001] The invention belongs to the field of adhesives, and in particular relates to a production process of a flame-retardant low-aldehyde solid wood composite floor. Background technique [0002] With the rapid development of China's economy and the improvement of people's living standards, the requirements for home decoration are also constantly increasing. Because of its natural and beautiful texture and good texture, wooden floor has become the first choice material for home floor decoration. Solid wood composite flooring overcomes the shortcomings of solid wood flooring wet expansion and shrinkage, has good dimensional stability, and at the same time retains the natural wood grain and comfortable foot feel of solid wood flooring, thus becoming an important variety in flooring. The production of solid wood composite flooring The amount of urea-formaldehyde resin floor glue used has also increased accordingly. Existing floor adhesives do not have flame ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27M3/04B27D1/08B32B37/12B32B37/06B32B37/10C09J161/32C09J175/14C08G18/76C08G18/67C08G18/32C08G12/40
CPCB27D1/08B27M3/04B32B37/06B32B37/12C08G12/40C08G18/3885C08G18/672C08G18/7614C08L2201/02C08L2205/03C09J11/04C09J11/08C09J161/32C08L75/04C08L83/04C08K2003/265C08K5/521C08K3/346C08K2003/2241
Inventor 蒙献芳陆俊行周腾飞陈宏玲秦文雄苏燕何晓荣廖迪峰
Owner 苏州大卫木业有限公司
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