阅读说明：本技术 一种减少木材加工中表面毛刺生成的处理工艺 (Treatment process for reducing surface burr generation in wood processing ) 是由 张玉文 于 2020-11-30 设计创作，主要内容包括：本发明公开了一种减少木材加工中表面毛刺生成的处理工艺,涉及木材加工技术领域,具体工艺如下：1)将木材浸没在甲基丙烯酰氯溶液进行处理,得到预处理木材；2)将预处理木材浸没于配制的处理液中进行处理；3)将木材浸没于甲基丙烯酸甲酯的二甲基亚砜溶液中进行处理,得到待加工木材；4)将待加工木材置于真空-加压浸渍机,注入浸渍液后进行浸渍,再经热反应处理即可。本发明中,对木材进行多次的真空浸渍处理,降低木材加工中纤维的撕裂程度以及避免纤维被刀具拉出破坏木材表层,从而实现毛刺生成减少的效果,并且通过降低木材的含水率进一步减少毛刺的形成,使得木材在加工制作过程中,无明显毛刺生成,并且切削后的木材表面光滑。(The invention discloses a treatment process for reducing surface burr generation in wood processing, which relates to the technical field of wood processing, and specifically comprises the following steps: 1) immersing the wood in a methacryloyl chloride solution for treatment to obtain pretreated wood; 2) immersing the pretreated wood in the prepared treatment liquid for treatment; 3) immersing the wood in a dimethyl sulfoxide solution of methyl methacrylate for treatment to obtain the wood to be processed; 4) putting the wood to be processed into a vacuum-pressurization impregnator, impregnating after impregnating solution is injected, and carrying out thermal reaction treatment. According to the invention, the wood is subjected to vacuum impregnation treatment for multiple times, so that the tearing degree of fibers in the wood processing is reduced, the fibers are prevented from being pulled out by a cutter to damage the surface layer of the wood, the effect of reducing burr generation is realized, the formation of burrs is further reduced by reducing the water content of the wood, no obvious burr is generated in the processing and manufacturing process of the wood, and the surface of the cut wood is smooth.)

1. A treatment process for reducing surface burr generation in wood processing is characterized by comprising the following specific process steps:

1) weighing a proper amount of methacryloyl chloride, adding the methacryloyl chloride into dichloromethane to prepare a methacryloyl chloride solution, immersing the wood in the solution for 20-25h at room temperature, taking out the solution, ventilating for 2-3h, then placing the solution into a drying box at 50-60 ℃ for treatment for 2-3h, soaking the treated wood in the dichloromethane solution for 20-25h, and then drying the wood at 100-105 ℃ to constant weight to obtain pretreated wood;

2) weighing a certain amount of nano alumina, adding the nano alumina into a polyethylene glycol aqueous solution, performing 300-400W ultrasonic dispersion for 15-25min, adding the obtained dispersion liquid into a dimethyl sulfoxide solution of isocyano ethyl methacrylate, adding a small amount of dibutyltin dilaurate, uniformly stirring to obtain a treatment liquid, immersing the pretreated wood into the treatment liquid, performing vacuum impregnation for 30-40min, then performing normal-pressure impregnation for 2-3h, and after the impregnation is finished, putting the wood into an oven to react for 4-5 h;

3) after the reaction is finished, immersing the wood in dimethyl sulfoxide solution of methyl methacrylate, adding a small amount of azodiisobutyronitrile, carrying out vacuum impregnation for 30-40min, then carrying out normal-pressure impregnation for 5-7h, after the impregnation is finished, wrapping the wood with aluminum-tin-foil paper, putting the wrapped wood into an oven, reacting for 20-24h, repeatedly washing after the reaction is finished, and drying to obtain the wood to be processed;

4) weighing a proper amount of potassium tartrate, dissolving the potassium tartrate in deionized water, stirring for 15-25min, adding a small amount of polyvinylpyrrolidone after the potassium tartrate is completely dissolved, continuing to stir for 10-15min, then adding a proper amount of thioacetamide into the mixed solution, continuing to stir for 30-40min, uniformly mixing to obtain impregnation liquid, then placing the wood to be processed in a vacuum-pressurization impregnator at normal temperature, injecting the impregnation liquid, continuing to impregnate for 20-24h at normal pressure after vacuum-pressurization impregnation, taking out, performing heat treatment at 180 ℃ and 200 ℃ for 16-24h, and cooling to room temperature to obtain the required wood.

2. The process according to claim 1, wherein in the step 1), the mass fraction of the methacryloyl chloride solution is 10-15%; the volume ratio of the wood to the solution is 1: 5-6.

3. The treatment process for reducing the generation of the surface burrs in the wood processing according to claim 1, wherein in the process step 2), the mass fraction of the polyethylene glycol aqueous solution is 5-10%; the adding amount of the alumina is 2-3% of the mass of the polyethylene glycol aqueous solution; the mass fraction of the dimethyl sulfoxide solution of the isocyano ethyl methacrylate is 5-7%; the addition amount of the dibutyltin dilaurate is 1-2% of the mass of the dimethyl sulfoxide solution of the isocyano ethyl methacrylate.

4. The process of claim 1, wherein in step 2), the volume ratio of the dispersion to the solution of isocyanoethyl methacrylate in dimethyl sulfoxide is 1: 2-3; the volume ratio of the pretreated wood to the treatment liquid is 1: 5-6; the pressure of the vacuum impregnation is 0.07-0.09 MPa; the reaction temperature is 85-90 ℃.

5. The treatment process for reducing the generation of surface burrs in wood processing according to claim 1, wherein in the process step 3), the mass ratio of methyl methacrylate to dimethyl sulfoxide is 6-7: 3-4; the adding amount of the azodiisobutyronitrile is 1-2% of the mass of the dimethyl sulfoxide solution of the methyl methacrylate; the solution used for washing is composed of toluene, ethanol and acetone according to the volume ratio of 4-5:1-1.5: 1.

6. The process according to claim 1, wherein in step 3), the volume ratio of the wood to the dimethyl sulfoxide solution of methyl methacrylate is 1: 5-6; the pressure of the vacuum impregnation is 0.07-0.09 MPa; the reaction temperature is 85-95 ℃; the drying temperature is 100-105 ℃, and the drying is carried out until the weight is constant.

7. The process of claim 1, wherein in step 4) the molar ratio of the potassium steprate tartrate to thioacetamide is 1: 2; the addition amount of the polyvinylpyrrolidone is 2-3% of the weight of the tartaric acid potassium ladder; the volume of the impregnation liquid is 5-6 times of the volume of the wood.

8. The treatment process for reducing the generation of surface burrs during wood processing as claimed in claim 1, wherein in the step 4), the stirring rotation speed is 100-150 r/min.

9. The process of claim 1, wherein in step 4), the vacuum-pressure impregnation process comprises the following steps: putting wood and vacuumizing to 5x10^-3-10x10^{- 3}Injecting impregnation liquid under MPa, vacuum impregnating for 1-2h, pressurizing to 1.2-1.5Mpa, and pressurizing to impregnate for 1-2 h.

Technical Field

The invention belongs to the technical field of wood processing, and particularly relates to a treatment process for reducing surface burrs generated in wood processing.

Background

In recent years, because of the implementation of natural forest protection engineering in China, the contradiction between supply and demand of domestic wood resources is getting worse. Although the total area of the artificial forest in China is the first in the world, the development potential is huge, and the supply-demand contradiction of the wood market is relieved to a certain extent, the original purpose of planting a part of artificial forests in China is the same as that of other artificial forests in most countries, and the utilization of the wood of the part of artificial forests is not considered.

The wood products have a large market in China, and wood processing is one of important industrial tasks in China. At present, patterns are carved on solid wood in a precise mode, but when the patterns are embossed through a woodworking engraving machine, burr factors can be caused due to the fact that the bottom of a knife is not flat or the cutting edge is not fast; some engravers have insufficient rigidity and can cause burrs; some woods generate burrs per se; particularly, in the case of carving, burrs of dry materials and wet materials are respectively obvious, so that the wood needs to be deburred from the processing to the final finished product. However, in the milling process of the curved surface of the wood product, the milling cutter can damage the continuous integrity of the wood fiber, even cause the surface of the wood product to be torn, cracked, split and twisted, and the hollow wood cells can also cause a large amount of micro burrs on the surface of the wood product. The presence of burrs not only affects the aesthetic appearance of the wood product, but also can result in poor quality of the wood product.

Burrs generated in the production and processing process of wood are basically soft and thin, sand paper is used for polishing in the traditional method, but the burrs are attached to the surface of wood and exist, part of the burrs extend into pores, the burrs are difficult to be punched, and the burr removing effect is poor. Chinese patent CN2014105531685 discloses a method for penetrating burrs of wood, which discloses that a thin oil layer is formed by coating thin oil on wood, in the process of PU resin solidification, the burrs of wood are outward vertical or leave the surface of wood due to tilting, and then the burrs can be easily removed from the root by using sand paper, so as to achieve the effect of thoroughly removing the burrs, but the manual polishing adopted by the high process consumes time and labor, has low efficiency, and easily generates dust in the polishing process, pollutes the environment, and affects the health of producers.

Disclosure of Invention

The invention aims to provide a treatment process for reducing surface burr generation in wood processing aiming at the existing problems.

The invention is realized by the following technical scheme:

a treatment process for reducing surface burr generation in wood processing comprises the following specific process steps:

1) weighing a proper amount of methacryloyl chloride, adding the methacryloyl chloride into dichloromethane to prepare 10-15% of methacryloyl chloride solution by mass fraction, immersing wood in the solution for 20-25h at room temperature according to the volume ratio of the wood to the solution of 1:5-6, taking out the wood, ventilating for 2-3h, then placing the wood into a drying box at 50-60 ℃ for treatment for 2-3h, soaking the treated wood in dichloromethane solution for 20-25h, and then drying at 100-105 ℃ to constant weight to obtain pretreated wood; according to the invention, wood is subjected to acyl chlorination treatment, methacryloyl chloride and wood cell wall components are subjected to chemical reaction, and a functional group C = C bond is introduced, so that the polarity of the wood can be reduced, and an active group is introduced, thereby facilitating the penetration of a solution in the wood cell wall in the subsequent impregnation treatment;

2) weighing a certain amount of nano aluminum oxide, adding the nano aluminum oxide into a 5-10% polyethylene glycol aqueous solution by mass fraction, carrying out 300-400W ultrasonic dispersion for 15-25min, adding the obtained dispersion liquid with the nano aluminum oxide content of 2-3% into a 5-7% dimethyl sulfoxide solution of isocyano ethyl methacrylate according to the volume ratio of 1:2-3, adding dibutyltin dilaurate according to 1-2% of the mass of the dimethyl sulfoxide solution of the isocyano ethyl methacrylate, uniformly stirring to obtain a treatment solution, immersing the pretreated wood into the treatment solution according to the volume ratio of 1:5-6 of the pretreated wood to the treatment solution, carrying out vacuum impregnation for 30-40min under the pressure of 0.07-0.09MPa, and then carrying out normal-pressure impregnation for 2-3h, after the impregnation is finished, putting the wood into an oven, and reacting for 4-5h at 85-90 ℃; in the invention, the wood is treated by utilizing the isocyano ethyl methacrylate, the introduced isocyano ethyl methacrylate can react with most of hydroxyl in the wood, the number of hydrophilic groups in the wood is reduced, so that the hydrophobicity of the wood is reduced, unsaturated double bonds can be introduced into the cell wall of the wood after treatment, and the introduced reactive groups are helpful to promote methyl methacrylate to enter the cell wall; the added polyethylene glycol solution has good dispersibility on the nano-alumina, and can reduce the agglomeration of the nano-alumina; through vacuum impregnation treatment, the added nano-alumina can enter adjacent cell cavities along with the solution through structures such as wood pores, a large amount of nano-particles are gathered and filled in the cell cavities, the hardness of wood is improved, fiber deformation caused by impression of a cutter on the wood can be avoided, fibers are reduced from being pulled out by the cutter to damage the surface layer of the wood, and burr generation can be reduced;

3) after the reaction is finished, immersing the wood into methyl methacrylate dimethyl sulfoxide solution with the mass ratio of 6-7:3-4 according to the volume ratio of 1:5-6, adding azodiisobutyronitrile according to 1-2% of the mass of the methyl methacrylate dimethyl sulfoxide solution, vacuum-impregnating for 30-40min under the pressure of 0.07-0.09MPa, then impregnating for 5-7h under normal pressure, wrapping the wood with aluminum tin foil paper after the impregnation is finished, putting the wrapped wood into an oven, reacting for 20-24h at the temperature of 85-95 ℃, repeatedly washing the wrapped wood with a solution consisting of toluene, ethanol and acetone according to the volume ratio of 4-5:1-1.5:1 after the reaction is finished, and drying at the temperature of 100-; according to the invention, methyl methacrylate is immersed into the cell wall of the wood, and free radical polymerization reaction is carried out under the action of an initiator, so that a resin layer with a graft copolymerization structure is formed in the cell wall, the formed resin layer is filled in most pores in the wood, the transmission of water in the wood is hindered, the entering of water is reduced, the hydrophobicity of the wood is improved, the reduction of the water content in the wood is facilitated, the reduction of the water content in the wood can minimize the mechanical damage of the wood, the burr on the surface of the wood in the cutting process is minimized, and the formation of the burr can be reduced;

4) weighing a proper amount of potassium tartrate, dissolving the potassium tartrate in deionized water, stirring the mixture for 15 to 25 minutes at the speed of 100-150r/min, and after the potassium tartrate is completely dissolvedAdding polyvinylpyrrolidone according to 2-3% of the weight of the potassium tartrate, continuously stirring for 10-15min, adding a proper amount of thioacetamide into the mixed solution, continuously stirring for 30-40min, uniformly mixing to obtain a steeping liquor with the molar ratio of the potassium tartrate to the thioacetamide being 1:2, placing the wood to be processed in a vacuum-pressure steeping machine at normal temperature, and vacuumizing to 5x10^-3-10x10^-3Injecting impregnation liquid according to 5-6 times of the volume of the wood under MPa, carrying out vacuum impregnation treatment for 1-2h, then pressurizing to 1.2-1.5Mpa, carrying out pressure impregnation for 1-2h, then carrying out normal pressure impregnation for 20-24h, taking out, carrying out heat treatment at 180-200 ℃ for 16-24h, and cooling to room temperature to obtain the required wood; in the application, a vacuum pressure impregnation method is adopted, impregnation liquid consisting of the potassium tartrate, the thioacetamide and the polyvinylpyrrolidone is injected into gaps among wood fibers, after subsequent heat treatment, aggregation can occur among nano-particles formed by the reaction of the potassium tartrate and the thioacetamide, some net-shaped structures grow from the surfaces, and the nano-particles can gradually disappear to form the net-shaped structures along with the heat treatment, so that the gaps among the wood fibers are completely filled with the net-shaped structures, the construction of the net-shaped structures in the wood can well disperse stress concentration, the tearing degree of the fibers in the wood under the surface pressure of a cutter can be reduced, the burr generation reducing effect is realized, meanwhile, the net-shaped structures constructed in the gaps among the wood fibers can play a role in fixing the fibers, the phenomenon that fine fibers and fragile fibers in the wood are pulled out by the cutter to damage the surface layer of the wood can be reduced, so that the generation of burrs can be further reduced.

Compared with the prior art, the invention has the following advantages:

according to the invention, the wood is subjected to vacuum impregnation treatment for multiple times, the hardness of the wood is improved by filling nano particles in the cell cavities of the wood, so that fiber deformation caused by imprinting of a cutter on the wood is avoided, and a reticular structure is constructed in gaps among wood fibers to play a role in dispersing stress concentration and fixing the fibers, so that the tearing degree of the fibers is reduced, the fibers are prevented from being pulled out by the cutter to damage the surface layer of the wood, and the effect of reducing burr generation is realized.

Detailed Description

The present invention will be further described with reference to specific embodiments.

Example 1

A treatment process for reducing surface burr generation in wood processing comprises the following specific process steps:

1) weighing a proper amount of methacryloyl chloride, adding the methacryloyl chloride into dichloromethane to prepare a 10% mass fraction methacryloyl chloride solution, immersing wood in the solution for 20 hours at room temperature according to the volume ratio of the wood to the solution of 1:5, taking out the wood, ventilating for 2 hours, then placing the wood into a 50 ℃ drying oven for treatment for 2 hours, soaking the treated wood in the dichloromethane solution for 20 hours, and then drying at 100 ℃ to constant weight to obtain pretreated wood;

2) weighing a certain amount of nano aluminum oxide, adding the nano aluminum oxide into a 5% polyethylene glycol aqueous solution by mass, carrying out 300W ultrasonic dispersion for 15min, adding a dispersion liquid with the content of 2% of the nano aluminum oxide into a 5% dimethyl sulfoxide solution of isocyano ethyl methacrylate by mass according to the volume ratio of 1:2, adding dibutyltin dilaurate according to 1% of the mass of the dimethyl sulfoxide solution of the isocyano ethyl methacrylate, uniformly stirring to obtain a treatment solution, immersing the pretreated wood into the treatment solution according to the volume ratio of 1:5 of the pretreated wood to the treatment solution, carrying out vacuum impregnation for 30min under the pressure of 0.07MPa, then carrying out normal-pressure impregnation for 2h, after the impregnation is finished, putting the wood into an oven, and carrying out a reaction for 4h at the temperature of 85 ℃;

3) after the reaction is finished, immersing wood into methyl methacrylate dimethyl sulfoxide solution with the mass ratio of 6:4 according to the volume ratio of 1:5, adding azodiisobutyronitrile according to 1% of the mass of the methyl methacrylate dimethyl sulfoxide solution, carrying out vacuum impregnation for 30min under the pressure of 0.07MPa, then carrying out normal pressure impregnation for 5h, after the impregnation is finished, wrapping the wood with aluminum-tin foil paper, then putting the wrapped wood into an oven, reacting for 20h at 85 ℃, after the reaction is finished, repeatedly washing the wrapped wood with solution consisting of toluene, ethanol and acetone according to the volume ratio of 4:1:1, and then drying the wrapped wood at 100 ℃ to constant weight to obtain the wood to be processed;

4) weighing a proper amount of potassium steprate tartrate, dissolving the potassium steprate tartrate in deionized water, stirring for 15min at the speed of 100r/min, adding polyvinylpyrrolidone according to 2-3% of the mass of the potassium steprate tartrate after the potassium steprate tartrate is completely dissolved, continuously stirring for 10min, then adding a proper amount of thioacetamide into the mixed solution, continuously stirring for 30min, uniformly mixing to obtain a steeping liquor, wherein the molar ratio of the potassium steprate tartrate to the thioacetamide is 1:2, then placing the wood to be processed in a vacuum-pressure steeping machine at normal temperature, and vacuumizing to 5x10^-3Injecting impregnation liquid according to 5 times of the volume of the wood under MPa, carrying out vacuum impregnation treatment for 1h, then pressurizing to 1.2Mpa, carrying out pressure impregnation for 1h, then carrying out normal pressure impregnation for 20h, taking out, carrying out heat treatment at 180 ℃ for 24h, and cooling to room temperature to obtain the required wood.

Example 2

A treatment process for reducing surface burr generation in wood processing comprises the following specific process steps:

1) weighing a proper amount of methacryloyl chloride, adding the methacryloyl chloride into dichloromethane to prepare a methacryloyl chloride solution with the mass fraction of 12%, immersing wood in the solution for 23h at room temperature according to the volume ratio of the wood to the solution of 1:5.5, taking out, ventilating for 2.5h, then placing the wood into a 55 ℃ drying box for treatment for 2.5h, soaking the treated wood in the dichloromethane solution for 23h, and drying at 102 ℃ to constant weight to obtain pretreated wood;

2) weighing a certain amount of nano aluminum oxide, adding the nano aluminum oxide into a 7% polyethylene glycol aqueous solution by mass, performing 350W ultrasonic dispersion for 20min, adding a dispersion liquid with the content of 2.5% of the nano aluminum oxide into a 6% dimethyl sulfoxide solution of isocyano ethyl methacrylate according to the volume ratio of 1:2.5, adding dibutyltin dilaurate according to 1.5% of the mass of the dimethyl sulfoxide solution of the isocyano ethyl methacrylate, uniformly stirring to obtain a treatment solution, immersing the pretreated wood into the treatment solution according to the volume ratio of 1:5.5 of the pretreated wood to the treatment solution, performing vacuum impregnation for 35min under the pressure of 0.08MPa, then performing normal-pressure impregnation for 2.5h, after the impregnation is finished, putting the wood into an oven, and performing reaction for 4.5h at the temperature of 88 ℃;

3) after the reaction is finished, immersing wood into methyl methacrylate dimethyl sulfoxide solution with the mass ratio of 7:3 according to the volume ratio of 1:5.5, adding azodiisobutyronitrile according to 1.5% of the mass of the methyl methacrylate dimethyl sulfoxide solution, vacuum-impregnating for 35min under the pressure of 0.08MPa, then impregnating for 6h under normal pressure, wrapping the wood with aluminum-tin foil paper after the impregnation is finished, putting the wrapped wood into an oven, reacting for 23h at 90 ℃, repeatedly washing the wrapped wood with a solution consisting of toluene, ethanol and acetone according to the volume ratio of 4.5:1.2:1 after the reaction is finished, and drying at 102 ℃ to constant weight to obtain the wood to be processed;

4) weighing a proper amount of potassium steprate tartrate, dissolving the potassium steprate tartrate in deionized water, stirring for 20min at a speed of 130r/min, adding polyvinylpyrrolidone according to 2.5 percent of the mass of the potassium steprate tartrate after the potassium steprate tartrate is completely dissolved, continuously stirring for 12min, then adding a proper amount of thioacetamide into the mixed solution, continuously stirring for 35min, uniformly mixing to obtain a steeping liquor, wherein the molar ratio of the potassium steprate tartrate to the thioacetamide is 1:2, then placing the wood to be processed in a vacuum-pressure steeping machine at normal temperature, and vacuumizing to 7x10^-3Injecting impregnation liquid according to 5.5 times of the volume of the wood under MPa, carrying out vacuum impregnation treatment for 1.5h, then pressurizing to 1.3Mpa, carrying out pressure impregnation for 1.5h, then carrying out normal pressure impregnation for 22h, taking out, carrying out heat treatment at 190 ℃ for 20h, and cooling to room temperature to obtain the required wood.

Example 3

A treatment process for reducing surface burr generation in wood processing comprises the following specific process steps:

1) weighing a proper amount of methacryloyl chloride, adding the methacryloyl chloride into dichloromethane to prepare 15% of methacryloyl chloride solution, immersing wood in the solution for 25 hours at room temperature according to the volume ratio of the wood to the solution of 1:6, taking out the wood, ventilating for 3 hours, then placing the wood into a 60 ℃ drying oven for treatment for 3 hours, soaking the treated wood in dichloromethane solution for 25 hours, and then drying at 105 ℃ to constant weight to obtain pretreated wood;

2) weighing a certain amount of nano aluminum oxide, adding the nano aluminum oxide into a 10% polyethylene glycol aqueous solution, carrying out 400W ultrasonic dispersion for 25min, adding a dispersion liquid with the nano aluminum oxide content of 3% into a 7% dimethyl sulfoxide solution of isocyano ethyl methacrylate according to the volume ratio of 1:3, adding dibutyltin dilaurate according to 2% of the mass of the dimethyl sulfoxide solution of isocyano ethyl methacrylate, uniformly stirring to obtain a treatment solution, immersing the pretreated wood into the treatment solution according to the volume ratio of 1:6 of the pretreated wood to the treatment solution, carrying out vacuum impregnation for 40min under the pressure of 0.09MPa, then carrying out normal-pressure impregnation for 3h, after the impregnation is finished, placing the wood into an oven, and carrying out a reaction for 5h at the temperature of 90 ℃;

3) after the reaction is finished, immersing wood in methyl methacrylate dimethyl sulfoxide solution with the mass ratio of 7:3 according to the volume ratio of 1:6, adding azodiisobutyronitrile according to 2% of the mass of the methyl methacrylate dimethyl sulfoxide solution, carrying out vacuum impregnation for 40min under the pressure of 0.09MPa, then carrying out normal pressure impregnation for 7h, wrapping the wood with aluminum-tin foil paper after the impregnation is finished, putting the wrapped wood into an oven, reacting for 24h at 95 ℃, repeatedly washing the wrapped wood with a solution consisting of toluene, ethanol and acetone according to the volume ratio of 5:1.5:1 after the reaction is finished, and drying the wrapped wood at 105 ℃ to constant weight to obtain wood to be processed;

4) weighing a proper amount of potassium steprate tartrate, dissolving the potassium steprate tartrate in deionized water, stirring for 25min at a speed of 150r/min, adding polyvinylpyrrolidone according to 2-3% of the mass of the potassium steprate tartrate after the potassium steprate tartrate is completely dissolved, continuously stirring for 15min, then adding a proper amount of thioacetamide into the mixed solution, continuously stirring for 40min, uniformly mixing to obtain a steeping liquor, wherein the molar ratio of the potassium steprate tartrate to the thioacetamide is 1:2, then placing the wood to be processed in a vacuum-pressure steeping machine at normal temperature, and vacuumizing to 10x10^-3Injecting impregnation liquid according to 6 times of wood volume under MPa, vacuum impregnating for 2 hr, pressurizing to 1.5Mpa, pressure impregnating for 2 hr, and pressurizing at normal pressureSoaking for 24h, taking out, performing heat treatment at 200 ℃ for 16h, and cooling to room temperature to obtain the required wood.

Comparative example 1: the process of step (1) was removed as compared with example 1, and the rest was the same as example 1.

Comparative example 2: compared with the embodiment 1, the nano alumina in the step (2) is removed, and the rest is the same as the embodiment 1.

Comparative example 3: the same as example 1 except that isocyanoethyl methacrylate in step (2) was removed as compared to example 1.

Comparative example 4: compared with example 1, methyl methacrylate in the step (3) is removed, and the rest is the same as example 1.

Comparative example 5: the heat treatment at 180 ℃ for 24 hours in step (4) was replaced by drying at 105 ℃ to constant weight as compared with example 1, and the rest was the same as in example 1.

Comparative example 6: the treatment of step (4) was removed as compared with example 1, and the rest was the same as example 1.

Control group: the wood is dried at 100 ℃ to constant weight without treatment.

Test experiments

1. Experimental Material

Selecting Juglans mandshurica (semi-annular-hole broad leaf wood, 25 years old, average annual ring width of 3.32 mm, and air dry density of 0.526 g/cm)³Collected from Heilongjiang) and semen Ginkgo (coniferous tree of 25 years old, average annual ring width of 5.15 mm, and air-dried density of 0.530 g/cm³From Anhui province, Inc.) as test wood, 30 logs each having a length of 1.3m and a diameter of > 20 cm were collected from each species and processed into 1220 mm. times.100 mm. times.20 mm sawn timber, which was then processed according to the processing techniques provided in examples 1-3 and comparative examples 1-6 and the control group to obtain test wood samples.

2. Experimental equipment

And (3) mechanical processing equipment: automatic feeding of a double-sided planer and a wide-band sander; microscopic observation device: olympus BX51 light microscope, equipped with DP71 automated imaging system, Leica M205C solid-state microscope.

3. Experimental methods

The block is used for preparing microscopic sections, and an optical microscope is adopted for observing and taking pictures; after the processing performance test is finished, the processing surface of the sample is placed under an entity microscope for observation and photographing, 2 mechanical processing modes and processing parameters thereof are determined according to LY/T2054 and 2012' evaluation method for mechanical processing performance of sawn timber and referring to the actual condition of wood processing in China, each processing mode is tested for 50 times in parallel, and the used sample has no defects of decay, cracking and the like.

1) Planing: the sample size is 900 mm multiplied by 100mm multiplied by 20 mm; a high-speed steel cutter is adopted, a main shaft is provided with 3 blades, the wedge angle of the cutter is 30 degrees, and the rotating speed is 5000 r/min; in the present invention, considering that the quality of the planing process has a significant effect on the subsequent processing of the wood products and is also closely related to the production cost and the wood utilization rate, and the planing depth and the feeding rate are important technical parameters, for this purpose, 5 sets of planing parameters (table 1) were set to evaluate the effects of the planing depth and the feeding rate.

TABLE 1 planing 5 sets of Process parameters

2) Grinding: the planed sample is made into a sample of 400 mm multiplied by 100mm multiplied by 10 mm, and the sample is respectively sanded by using alumina sand paper of 120 meshes and alumina sand paper of 80 meshes, wherein the feeding speed is 6.0m/min, and the sanding amount is 0.6 mm.

4. Results of the experiment

Planing performance

The results of surface roughness measurements of two types of wood processed by different methods in 5 types of planing process are shown in table 2.

TABLE 2 surface roughness of wood samples after planing

Walnut mountain ash

Ginkgo biloba

Sanding performance

The results of the surface roughness measurements of two types of wood processed by different methods in the sanding process are shown in table 3.

TABLE 3 surface roughness of sanded Wood samples

By summarizing and analyzing the experimental results, the processing process effect of the embodiment is best, and the rest process effects are sequenced in sequence as follows: comparative examples 2, 4, 3, 5, 6 and 1, wherein in the examples, the process effect of the example 2 is the best, so that no obvious burr is generated in the process of processing and manufacturing the wood, thereby reducing the roughness of the wood surface and improving the surface smoothness of the wood.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention.