Preparation method of functional impact-resistant veneer

An impact-resistant and functional technology, applied in the field of wood processing, can solve the problems of affecting the appearance, poor dye fixation rate, and difficulty in ensuring the floor color is durable, so as to improve distribution uniformity and fixation rate, dimensional stability and water resistance Lifting, coloring effect beautiful and long-lasting effect

Inactive Publication Date: 2020-03-17
DEHUA TB NEW DECORATION MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of dyeing and gluing, due to changes in internal moisture content and external conditions (such as temperature and pressure), the internal stress of the veneer will change or have a large difference, which will easily lead to problems such as cracking and warping. The impact strength and dimensional stability of the veneer are obviously deteriorated, which will directly affect the production or use of the floor
The effect of gluing depends on the performance and quality of the glue itself and whether the combination of the glue and the veneer is stable and firm. Synthetic resins containing formaldehyde are often used as glue because of their wear resistance, waterproof and good viscosity, such as urea-formaldehyde resin. , melamine formaldehyde resin, and using these resins, the environmental protection level is low, and the function is single
[0004] The staining effect of the floor is reflected in the uniformity and durability of the coloring, and many stained floors are easy to fade after a long time of use, seriously affecting the appearance
The main reasons for the fading of the floor are as follows: ①Under the irradiation of light (especially ultraviolet light), the color system of the dye molecule changes or is destroyed, resulting in the decomposition of the dye and the phenomenon of discoloration or fading; ②Environmental factors lead to faster fading, High temperature, high humidity and full contact with oxygen will accelerate the photooxidation process and make the fading more serious; ③The fixation rate of the dye is poor, and it is easy to detach from the plate under the action of external force
It is rare for the existing dyeing process to consider these factors at the same time, and it is difficult to ensure that the color of the floor can be maintained for a long time

Method used

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  • Preparation method of functional impact-resistant veneer

Examples

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Effect test

Embodiment 1

[0028] A method for preparing a functional impact-resistant veneer, comprising the following steps:

[0029] (1) Using sliced ​​oak veneer as raw material, it is dyed, and hindered amine light stabilizer UV-765 and disazoic acid dye C 24 h 22 N 4 o 6 S 2 According to the mass ratio of 15:100, the acidic binary compound dye was prepared, the dye was dissolved at 65°C, and the air pump was turned on at the same time, air was introduced into the dye solution, the dye solution was stirred to make the concentration uniform, the dye was dissolved for 40 minutes, and the oak single The board is vertically immersed in the dyeing solution, bath ratio V solution: V board=8:1, the temperature is raised at a rate of 1°C / min, and the temperature is kept at 90°C for heat preservation dyeing, and the oak veneer is dipped for 4 hours; the veneer is dried by a roller dryer. Carry out drying, the drying temperature is 60°C, the drying time is 30 minutes, and the moisture content is reduced ...

Embodiment 2

[0034] (1) Using sliced ​​poplar veneer as raw material, it is dyed with hindered amine light stabilizer UV-765 and disazoic acid dye C 24 h 22 N 4 o 6 S 2 According to the ratio of 20:200 mass parts to prepare acidic binary compound dyes, dissolve the dyes at 68 ° C, and at the same time turn on the air pump, let air into the dye solution, stir the dye solution to make the concentration uniform, dissolve the dye for 50 minutes, and poplar The veneer is vertically immersed in the dyeing solution, the bath ratio V solution: V plate = 10:1, the temperature is raised at a rate of 2°C / min, and the heat preservation dyeing is carried out at 92°C, and the poplar veneer is dipped for 8 hours; the roller dryer is used for drying The veneer is dried at a drying temperature of 80°C and a drying time of 35 minutes to reduce the moisture content to 8%, and the A veneer is obtained;

[0035] (2) Premix the hindered amine light stabilizer UV-765, antibacterial nano-silver, and tourmalin...

Embodiment 3

[0039] (1) Using the sawn eucalyptus veneer as raw material, it is dyed, and the hindered amine light stabilizer UV-770 and disazoic acid dye C 24 h 22 N 4 o 6 S 2 According to the ratio of 30:300 parts by mass to make acidic binary compound dye, dissolve the dye at 70°C, turn on the air pump at the same time, let air into the dye solution, stir the dye solution to make the concentration uniform, and dissolve the dye for 60 minutes, press the wood The veneer is vertically immersed in the dyeing solution, bath ratio V solution: V plate = 15:1, the temperature is raised at a rate of 3°C / min, and the heat preservation dyeing is carried out at 95°C, and the eucalyptus veneer is dipped for 12 hours; The veneer is dried at a drying temperature of 100°C and a drying time of 45 minutes to reduce the moisture content to 10% to obtain the A veneer;

[0040] (2) Premix the hindered amine light stabilizer UV-770, antibacterial nano-titanium dioxide, and tourmaline powder at a mass rat...

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Abstract

The invention discloses a preparation method of a functional impact-resistant veneer; the veneer is processed through dyeing and drying, resin preparation, resin impregnation and drying balance, so that the veneer has good and lasting impact resistance and attractiveness, and the service life of the veneer is prolonged. Specifically, the problems of cracking, warping deformation and the like are avoided by controlling the moisture content of the veneer in the technological process, the strength of the veneer is kept, on the basis, the veneer is coated with modified resin with modified PAE as amain raw material, a vacuum impregnation technology is combined, and thus the impact strength, the size stability and the waterproofness of the veneer are improved; a specific compound dye composed of a hindered amine light stabilizer and a bisazo acid dye is combined with a vertical dip dyeing process, so that the dyeing effect is attractive and lasting, meanwhile, the modified resin isolates the environment, and the color fastness of the veneer is further improved.

Description

technical field [0001] The invention belongs to the technical field of wood processing and relates to a preparation method of a functional impact-resistant veneer. Background technique [0002] With the advancement of science and technology and the continuous improvement of people's living standards, people have higher and higher requirements for the appearance and quality of the floor. High impact resistance, comfort and beauty have become the necessary properties of floor materials. The solid wood composite floor has natural patterns and feet. Comfortable, safe to use and other characteristics, because of its good comprehensive performance, it has become the mainstream product of decorative flooring materials. Solid wood composite flooring is made of laminated veneers. In order to improve its use effect, the veneer is usually reprocessed. The most common way is to dye the veneer while maintaining its natural wood grain and enrich the color, which greatly improves the visua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K5/02B27K3/08B27K3/52B27K5/04B27K3/50
CPCB27K3/08B27K3/50B27K3/52B27K5/02B27K5/04B27K2240/70
Inventor 程明娟张晓伟王俊敏杨楠陈凯刘爱军沈惠文鲁守余张丽
Owner DEHUA TB NEW DECORATION MATERIAL CO LTD
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