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Production method of moisture-proof ceiling decorative board

A production method and technology for decorative panels, applied in the types of adhesives, household components, applications, etc., can solve the problems of easy bulging, deformation, warping and deformation of plates, short service life, etc., to improve water resistance, improve sealing performance, the effect of avoiding the gel effect

Active Publication Date: 2015-11-04
SHENZHEN STYLE DECORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Particleboard and MDF have poor water resistance, and after absorbing moisture, the board will warp due to the difference in expansion force. The ceiling is a building structure that is most vulnerable to moisture attack. Therefore, the ceiling decoration materials made of particleboard and MDF currently used Easy to bulge and deform, short service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The production of urea-formaldehyde resin comprises the steps:

[0027] Pre-polymerization stage: Add formaldehyde solution to the polymerization reactor at one time, adjust the pH value to 2-2.5 with formic acid, add urea with 15% weight of the formaldehyde solution, raise the temperature to 46°C, and keep the temperature for 60 minutes.

[0028] Polymerization stage: at the end of the pre-polymerization stage, add alkali to adjust the pH value of the reaction solution to 8-8.5, add urea with 30% weight of formaldehyde solution, and complete the addition within 40-60 minutes, then raise the temperature of the reaction solution to 88-92°C, and keep it warm for 90 minutes .

[0029] Post-polymerization stage: at the end of the polymerization stage, add urea with a weight of 30-40% of the formaldehyde solution, finish adding within 40-60 minutes, then lower the reaction temperature to 70-85°C, react for 60-90 minutes, and cool down to room temperature to obtain urea-forma...

Embodiment 2

[0032] Add the moisture-proof urea-formaldehyde resin adhesive that 150kg embodiment 1 obtains to 1m3 sawdust, stir evenly with a mixer, put into the plate mold, compress with compressor under normal temperature, the pressure is 2.5Mpa; Then put into the hot press, at 130 ~135°C, hot pressing at 1.5Mpa; put the plate into a constant temperature room for natural ventilation and cooling for 3~4h, compress it with a compressor at room temperature, the pressure is 2.5Mpa; put it in a hot press, and press it for the second time at 125 ~130°C, pressure 1.5Mpa, put the board in a constant temperature room for natural ventilation and cooling for 3~4h; compress it with a compressor at room temperature, the pressure is 2.5Mpa; put it into a hot press, and press it for the third time, the temperature is 120 ~120°C, pressure 1.5Mpa; then heat up to 150°C, paste melamine-impregnated paper on both sides of the board under a pressure of 1.5Mpa, cool to room temperature by blowing air, and obt...

Embodiment 3

[0034] Add 180kg of the moisture-proof urea-formaldehyde resin adhesive obtained in Example 1 to 1m3 nut shell particles, stir evenly with a mixer, put it into a plate mold, compress it with a compressor at normal temperature, and the pressure is 2.5Mpa; 130~135℃, hot pressing at 1.8Mpa; put the plate in a constant temperature room for natural ventilation and cooling for 3~4 hours, and compress it with a compressor at room temperature, with a pressure of 2.5Mpa; 125~130℃, the pressure is 1.8Mpa, put the plate into the constant temperature room for natural ventilation and cooling for 3~4 hours; use a compressor to compress at room temperature, the pressure is 2.5Mpa; then put it into the hot press, and heat the third time, the temperature is 120~120℃, the pressure is 1.8Mpa; then the temperature is raised to 150℃, the two sides of the board are covered with aluminum oxide wear-resistant paper under the pressure of 1.5Mpa, and the air blast is cooled to room temperature to obtain...

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Abstract

The invention provides a production method of a damp-proof ceiling decorative sheet. The production method is characterized in that particles such as various straw and nut shells produced after wood particles or crops are collected are mixed with damp-proof urea-formaldehyde resin adhesives to manufacture a panel in a pressing mode, and melamine impregnated paper or aluminums oxide wear-resistant paper is stuck to the panel in a pressing mode under a high temperature; three times of cold pressing and three times of hot pressing are adopted in forming the panel, and twice heat-dissipation maintenance is performed; the temperature of cold pressing is the room temperature, the pressure is 2.5MPa, and the pressure of hot pressing is 1.5-2.0MPa; the temperature of the first time of hot pressing is 130-135 DEG C, the temperature of the second time of hot pressing is 125-130 DEG C, and the temperature of the third time of hot pressing is 120-120 DEG C; heat dissipation maintenance is performed by cooling a constant-temperature room to be in the room temperature through natural ventilation for 3-4h; the melamine impregnated paper or the aluminums oxide wear-resistant paper is stuck to the surface of the panel under the temperature of 150 DEG C and the pressure of 1.5MPa.

Description

technical field [0001] The invention relates to a production method of a wood-based panel, in particular to a production method of a wood-based panel for producing ceiling decoration materials with excellent moisture resistance. Background technique [0002] At present, the decoration material of smallpox mainly adopts gypsum board. It is a building material with light weight, high strength, thin thickness, convenient processing, sound insulation, heat insulation and fire prevention. It is one of the new lightweight boards that are currently focused on development. one. As the state encourages the production of sawdust, shavings, bark, sanding powder, branches and branches in forestry production, wood processing, bamboo processing and wood-based panel production, various straws and nuts produced after harvesting crops Shells are used as raw materials to produce wood-based panels. More and more manufacturers are trying to use forest and agricultural by-products to produce pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/06B27N3/10C09J161/24C09J133/00C09J11/08C09J11/04C08G12/12
Inventor 钱秀英
Owner SHENZHEN STYLE DECORATION
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