阅读说明：本技术 一种隔音保温实木复合门门扇的制备方法 (Preparation method of sound-insulation and heat-preservation solid wood composite door leaf ) 是由 谷庆 于 2019-10-30 设计创作，主要内容包括：本发明公开一种隔音保温实木复合门门扇的制备方法,包括以下操作步骤：(1)开料：对厚度为5-8mm的高密度纤维板按常规门扇尺寸锯解加工,每边预留10mm加工余量；(2)在高密度纤维板表面辊涂混合乳胶液后,将修整好的厚度为0.8-1.2mm的实木板粘覆在混合乳胶液上后,进行热压；(3)在高密度纤维板背面辊涂混合乳胶液后,将其和LVL框架组坯后冷压处理,最后进行裁边修整、钻孔、油漆处理后,得到成品。本发明提供的一种隔音保温实木复合门门扇的制备方法,制作简单,成本低廉,制得的实木复合门不仅具有较高的强度,而且隔音保温性能优异,品质优异。(The invention discloses a preparation method of a sound-insulation and heat-preservation solid wood composite door leaf, which comprises the following operation steps: (1) cutting: sawing and processing the high-density fiberboard with the thickness of 5-8mm according to the size of a conventional door leaf, and reserving 10mm processing allowance on each side; (2) after the mixed latex solution is roll-coated on the surface of the high-density fiberboard, sticking a finished solid board with the thickness of 0.8-1.2mm on the mixed latex solution, and then carrying out hot pressing; (3) and after the mixed latex solution is coated on the back roller of the high-density fiberboard, assembling the high-density fiberboard with an LVL frame, performing cold pressing treatment, and finally performing edge cutting, trimming, drilling and painting treatment to obtain a finished product. The preparation method of the sound-insulation heat-preservation solid wood composite door leaf provided by the invention is simple to manufacture and low in cost, and the manufactured solid wood composite door not only has higher strength, but also is excellent in sound-insulation heat-preservation performance and excellent in quality.)

1. A preparation method of a sound-insulation and heat-preservation solid wood composite door leaf is characterized by comprising the following operation steps:

(1) cutting: sawing and processing a high-density fiberboard with the thickness of 5-8mm according to the size of a conventional door leaf, reserving 10mm of processing allowance on each side, wherein the high-density fiberboard is prepared from wood fibers and mixed powder according to the proportion of 8-12:1, and the mixed powder is prepared from the following components in parts by weight: 55-65 parts of aluminum oxide powder, 11-18 parts of garnet powder and 2-7 parts of expanded graphite;

(2) after roller coating mixed latex solution on the surface of a high-density fiberboard, sticking a finished solid board with the thickness of 0.8-1.2mm on the mixed latex solution, and then carrying out hot pressing, wherein the mixed latex solution is prepared from polyvinyl acetate emulsion glue and an additive according to the mass ratio of 25-30:1, and the additive is prepared from the following components in parts by weight: 10-20 parts of nano magnesium oxide and 13-16 parts of titanium silicon carbide;

(3) and after the mixed latex solution is coated on the back roller of the high-density fiberboard, assembling the high-density fiberboard with an LVL frame, performing cold pressing treatment, and finally performing edge cutting, trimming, drilling and painting treatment to obtain a finished product.

2. The method for preparing the door leaf of the sound-insulation and heat-preservation solid wood composite door as claimed in claim 1, wherein the high-density fiberboard is prepared by adopting the following method: uniformly mixing wood fibers and the modified urea-formaldehyde resin adhesive according to the mass ratio of 10:1, adding mixed powder, uniformly stirring, drying until the water content is below 7%, prepressing into a plate blank, and then carrying out hot pressing, standing and sanding treatment to obtain the high-density fiberboard.

3. The method for manufacturing a door leaf of a sound-insulation heat-preservation solid wood composite door as claimed in claim 1, wherein in the step (1), the average particle sizes of the alumina powder, the garnet powder and the expanded graphite are all 3000 meshes.

4. The method for manufacturing a door leaf of a sound-insulating and heat-preserving solid wood composite door as claimed in claim 1, wherein in the step (2), the solid wood board is any one of a thin plate of northeast China ash or a thin plate of beech.

5. The method for preparing the door leaf of the sound-insulation and heat-preservation solid wood composite door according to claim 1, wherein in the step (2), the mixed latex solution is prepared by the following method: adding the polyvinyl acetate emulsion adhesive with the solid content of 20% and the additive into a stirrer, and continuously stirring at the rotating speed of 400r/min for 40-50min to obtain the mixed latex.

6. The method for manufacturing a door leaf of a sound-insulation and heat-preservation solid wood composite door as claimed in claim 1, wherein in the step (2) and the step (3), the feeding speed is 18-24m/min when the mixed latex solution is roll-coated.

7. The method for preparing a door leaf of a sound-insulation and heat-preservation solid wood composite door as claimed in claim 1, wherein in the step (2), the hot-pressing temperature is 90-95 ℃, the hot-pressing pressure is 1.5-1.7MPa, and the hot-pressing time is 8-10 min.

8. The method for preparing the door leaf of the sound-insulation and heat-preservation solid wood composite door as claimed in claim 1, wherein in the step (3), the cold pressing pressure is 0.4-0.6MPa and the cold pressing time is 6-8 hours during the cold pressing treatment.

Technical Field

The invention belongs to the technical field of solid wood composite door preparation, and particularly relates to a preparation method of a sound-insulation heat-preservation solid wood composite door leaf.

Background

In recent years, due to the acceleration of urbanization pace in China and the high-speed development of the real estate industry, the wood door industry develops very quickly. The wooden door processing technology is continuously perfected and innovated, the whole structure and the modeling design are continuously enriched, and the wooden doors in the market at present can be classified into three categories, namely solid wooden doors, solid wood composite doors, wooden composite doors and the like according to materials. The solid wood composite door is a wood door which is made by taking a density board or a decorative single board with a wood skin adhered on the surface as a surface material, taking a solid material spliced board as a door leaf framework and taking an artificial board as a core material. The surface of the solid wood composite door has the natural texture of wood and various styles. In the prior art, in order to improve the sound insulation and heat preservation performance of the solid wood composite door, more fillers are often required to be filled, the filling of the fillers not only makes the preparation process of the solid wood composite door complicated and increases the cost, but also is not beneficial to sound insulation and heat preservation after the fillers are unevenly distributed.

Disclosure of Invention

In order to solve the technical problems, the invention provides a method for preparing the door leaf of the solid wood composite door, which can enable the solid wood composite door to achieve excellent sound insulation and heat preservation performance without adding filler.

The invention is realized by the following technical scheme.

A preparation method of a sound-insulation and heat-preservation solid wood composite door leaf comprises the following operation steps:

(1) cutting: sawing and processing a high-density fiberboard with the thickness of 5-8mm according to the size of a conventional door leaf, reserving 10mm of processing allowance on each side, wherein the high-density fiberboard is prepared from wood fibers and mixed powder according to the proportion of 8-12:1, and the mixed powder is prepared from the following components in parts by weight: 55-65 parts of aluminum oxide powder, 11-18 parts of garnet powder and 2-7 parts of expanded graphite;

(2) after roller coating mixed latex solution on the surface of a high-density fiberboard, sticking a finished solid board with the thickness of 0.8-1.2mm on the mixed latex solution, and then carrying out hot pressing, wherein the mixed latex solution is prepared from polyvinyl acetate emulsion glue and an additive according to the mass ratio of 25-30:1, and the additive is prepared from the following components in parts by weight: 10-20 parts of nano magnesium oxide and 13-16 parts of titanium silicon carbide;

(3) and after the mixed latex solution is coated on the back roller of the high-density fiberboard, assembling the high-density fiberboard with an LVL frame, performing cold pressing treatment, and finally performing edge cutting, trimming, drilling and painting treatment to obtain a finished product.

Further, the high-density fiberboard is manufactured by adopting the following method: uniformly mixing wood fibers and the modified urea-formaldehyde resin adhesive according to the mass ratio of 10:1, adding mixed powder, uniformly stirring, drying until the water content is below 7%, prepressing into a plate blank, and then carrying out hot pressing, standing and sanding treatment to obtain the high-density fiberboard.

In the step (1), the alumina powder, garnet powder and expanded graphite each had an average particle size of 3000 mesh.

Further, in the step (2), the solid wood board is any one of a thin board of northeast China ash or a thin board of beech.

Further, in the step (2), the mixed latex is prepared by the following method: adding the polyvinyl acetate emulsion adhesive with the solid content of 20% and the additive into a stirrer, and continuously stirring at the rotating speed of 400r/min for 40-50min to obtain the mixed latex.

Furthermore, in the step (2) and the step (3), the feeding speed is 18-24m/min when the mixed emulsion is roll-coated.

Further, in the step (2), the hot pressing temperature is 90-95 ℃, the hot pressing pressure is 1.5-1.7MPa, and the hot pressing time is 8-10 min.

Further, in the step (3), the cold pressing pressure is 0.4-0.6MPa and the cold pressing time is 6-8 hours during the cold pressing treatment.

According to the technical scheme, the beneficial effects of the invention are as follows:

the preparation method of the sound-insulation heat-preservation solid wood composite door leaf provided by the invention is simple to manufacture and low in cost, and the manufactured solid wood composite door not only has higher strength, but also is excellent in sound-insulation heat-preservation performance and excellent in quality. According to the invention, the aluminum oxide powder, the garnet powder and the expanded graphite are added into the wood fiber during the preparation of the high-density fiberboard, wherein the aluminum oxide powder can effectively improve the strength of the high-density fiberboard, and the garnet powder and the expanded graphite can effectively improve the absorption of the high-density fiberboard on sound wave energy and heat, so that the sound absorption and heat insulation performance of the high-density fiberboard is greatly improved; according to the mixed latex solution provided by the invention, the nano magnesium oxide and the titanium silicon carbide are added into the polyvinyl acetate emulsion glue, so that the bonding property and the anti-aging property of the glue solution can be effectively improved, the adhesive layer has excellent reflection performance on sound waves, and the sound insulation effect of a door leaf is greatly improved.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.