CN110900745A - Manufacturing method of plasma modified glass fiber local reinforced laminated bent glued wood - Google Patents
Manufacturing method of plasma modified glass fiber local reinforced laminated bent glued wood Download PDFInfo
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- CN110900745A CN110900745A CN201911209920.3A CN201911209920A CN110900745A CN 110900745 A CN110900745 A CN 110900745A CN 201911209920 A CN201911209920 A CN 201911209920A CN 110900745 A CN110900745 A CN 110900745A
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- wood
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/10—Butting blanks of veneer; Joining same along edges; Preparatory processing of edges, e.g. cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G11/00—Applying adhesives or glue to surfaces of wood to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27H—BENDING WOOD OR SIMILAR MATERIAL; COOPERAGE; MAKING WHEELS FROM WOOD OR SIMILAR MATERIAL
- B27H1/00—Bending wood stock, e.g. boards
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/0015—Treating of wood not provided for in groups B27K1/00, B27K3/00 by electric means
- B27K5/002—Electric discharges, plasma
Abstract
The invention relates to a method for manufacturing plasma modified glass fiber local reinforced laminated bent glued wood, belonging to the technical field of wood composite material manufacturing. The process comprises the steps of drying a veneer with the thickness of 0.5-3 mm, adjusting the water content to 6-12%, coating an adhesive on the surface of the veneer, modifying the surface of glass fiber by adopting normal-pressure dielectric barrier plasma, carrying out finite element simulation analysis on laminated bent laminated veneer, finding out the weakest bearing node, laminating a plurality of layers of veneers according to longitudinal straight lines, paving a layer of plasma modified carbon fiber on the subsurface layer of the upper surface and the subsurface layer of the lower surface of the weakest bearing node of the laminated bent laminated veneer, then placing a plate blank in a mold, and carrying out high-frequency bending gluing to form the plate blank. The product prepared by the method can reduce the section size of the member on the premise of ensuring the strength of the whole member of the curved wood, the material saving rate reaches more than 15 percent, the production process is simple and efficient, the production process is energy-saving and environment-friendly, the production equipment is simple and convenient to operate, and continuous automatic operation can be realized.
Description
Technical Field
The invention relates to a method for manufacturing a plasma modified glass fiber local reinforced laminated bent glued wood, belonging to the technical field of manufacturing of wood composite materials.
Background
Wood is the most valuable wealth given to human beings by nature, has natural affinity with human beings, and cannot be replaced by any material. The wood and the products thereof can create a beautiful environment for people's work and life not only because of the special color and texture but also because of the easy modeling. Laminated bent glued wood which is prepared by taking a wood veneer as a main raw material through the working procedures of drying, gluing, assembling, bending, gluing and the like is a typical material which can be applied to the modeling of occasions such as wood structure buildings, furniture manufacture, indoor and outdoor decoration and the like.
The development of laminated curved glued wood manufacturing technology has gone through three stages: in ancient times, mankind sawn and bent timber and cross-connected timber to make bent furniture parts. In the nineteenth century and the fifties, Germany initiated a solid wood bending and forming process to manufacture the first curved wood chair in the world, and the radius of the bent and formed circle was as small as 3 times of the thickness of wood. The trial production of the bending seat is successful, and the wide field is expanded for the development of the bent wood furniture, thereby opening a new era of modern furniture. In order to further improve the outturn percentage, reduce the cost, simplify the process and realize the industrial production of the curved wood furniture, Finnish researchers firstly put forward a lamination gluing bending forming technology in the twentieth century, wherein wood is firstly made into a single board, and the single board is bent and glued at high temperature and high pressure after being glued. The manufacturing method reduces the requirement on wood materials, improves the outturn rate, increases the strength of the bending component, reduces the production cost, and enables the production process of the wood furniture to have a fundamental change, which can be said to be a revolutionary leap of the production of the wood furniture.
However, in the industrial production process of laminated curved laminated wood, in order to ensure the strength and stability of each part of the curved member, a large margin is reserved in the structural design of the curved member, so that the strength is excessively surplus, and the waste of wood resources is caused.
Disclosure of Invention
The invention aims to locally reinforce the weakest node of laminated bent laminated wood by adopting the glass fiber modified by the medium barrier plasma under normal pressure, and achieve the purposes of reducing the section size of a bent wood member and saving wood resources on the premise of ensuring the strength of the whole bent wood member.
The technical solution of the invention is as follows: the manufacturing method of the plasma modified glass fiber local reinforced laminated bent glued wood is completed according to the following steps:
firstly, preparing a veneer:
firstly, cutting logs into wood sections, softening the wood sections to improve the plasticity of the wood, ensuring uniform thickness and smooth surface of a veneer, then peeling off barks, determining a rotary cutting center of the wood sections, and carrying out rotary cutting to obtain a wood veneer;
the thickness of the veneer in the first step is 0.5-3 mm, the thickness deviation of the veneer is less than +/-0.05 mm, the thickness of the veneer is determined according to the shape, the size, the bending radius and the bending direction of the laminated bent laminated wood, the smaller the bending radius is, the thinner the veneer is required to be, but the thinner the veneer is, the number of layers is increased, the amount of glue is increased, and the production cost is increased;
secondly, drying the veneer:
in order to ensure the quality of laminated bending gluing of the veneers, the veneers are dried, the moisture content after drying is controlled to be 6-12%, the moisture content of the veneers is closely related to the viscosity of glue solution, hot pressing time, gluing quality and the like, the moisture content of the veneers is high, the plasticity of the wood is good, the bending performance is good, but the moisture content of the veneers is too high, the viscosity of the adhesive is reduced, the glue solution can be extruded during hot pressing to cause glue-lacking bonding, the gluing time can be prolonged, the phenomena of degumming, bubbling, deformation and the like can occur due to too high steam pressure in a plate blank, if the moisture content is too low, the veneers can absorb more adhesive to cause glue-lacking bonding, the plasticity of the veneers is poor, the material is brittle and easy to damage;
when the thickness of the veneer is smaller (the thickness is less than 2mm), a mesh belt type dryer can be directly adopted for drying, when the veneer is thicker (the thickness is more than or equal to 2mm), in order to prevent the veneer from warping and deforming caused by wood shrinkage in the drying process and ensure the drying efficiency, firstly, a roller dryer or the mesh belt type dryer is used for carrying out air injection pre-drying on the wood veneer, then, a hot plate dryer is used for drying the wood veneer to the target water content range under a certain pressure condition, and the hot plate drying pressure is controlled to be 0.1-0.3 MPa;
thirdly, gluing and splicing the single plates:
according to the shape and the size of the laminated bent laminated wood in use occasions, the required width and length can be achieved by shearing and gluing the veneers;
longitudinally lengthening the single plates: after the dried single plate is subjected to longitudinal and transverse edging treatment, inclined planes are milled at two ends along the grain direction of the single plate, the slope is 1: 6 to 1: 12, urea-formaldehyde resin adhesive is coated on the inclined plane at one end of the single plate, and the dosage of the adhesive is 100-120 g/m2Butt-jointing the inclined surfaces of two veneers, and then placing the two veneers in a veneer lengthening machine to heat to solidify the adhesive at the inclined surfaces, wherein the heating temperature is 100-120 ℃, and the veneers are lengthened longitudinally along the grain direction of the wood;
transversely widening the single plate: after the dried veneers are subjected to longitudinal and transverse edging treatment, splicing the veneers into a specified width by adopting a hot melt adhesive line in a direction vertical to the texture of the veneers;
fourthly, gluing the single board:
coating an adhesive on the surface of a single plate by adopting a mechanical roller coating mode, wherein the single-surface gluing amount is 150-220 g/m2The addition amount of the curing agent ammonium chloride is 0.3-1% depending on the thickness of the glue seed, the tree seed, the veneer and the like, and 5-10% of the curing agent ammonium chloride is added into the adhesiveThe industrial flour is used as a filler;
the adhesive used for gluing the veneer in the step four is one of urea-formaldehyde glue, melamine modified urea-formaldehyde glue, mixed glue of urea-formaldehyde glue and white glue, and phenolic glue;
fifthly, glass fiber plasma modification treatment:
the glass fiber surface is modified by adopting normal pressure dielectric barrier plasma, the physical etching effect is carried out on the glass fiber surface through active particles with high energy such as ions, electrons, molecules, photons and the like in plasma flow, the surface roughness of the glass fiber is improved, the adhesive is favorably permeated to form glue nails, the interface bonding force is enhanced, simultaneously, the free radical of the plasma is utilized to initiate the chemical reaction effect, a large amount of polar chemical functional groups such as oxygen-containing functional groups, nitrogen-containing functional groups and the like are introduced to the glass fiber surface, the surface energy of the glass fiber surface is obviously improved, and the foundation is laid for realizing the efficient gluing of the wood veneer and the glass fiber;
the glass fiber plasma modification treatment method comprises the following steps: placing glass fibers on a feeding conveying belt of a normal-pressure dielectric barrier plasma modification device, adjusting the distance between differentially excited dual-dielectric barrier discharge electrodes covered by corundum ceramics, wherein the range value is 5-10 mm, starting a power supply, adjusting the processing power to 3-6 KW, enabling air between the electrodes to generate low-temperature plasma through dielectric barrier discharge, enabling the glass fibers to suspend at a speed of 2-40 m/min and pass through a gap in the middle of a discharge electrode, and simultaneously performing plasma modification treatment on two surfaces of the glass fibers under a normal-pressure state;
sixthly, designing a local reinforcing structure of the laminated bent laminated wood:
simulating and analyzing laminated bent laminated veneers with different shapes and sizes by adopting a finite element, finding out a node with the weakest bearing capacity, and locally reinforcing the node by paving plasma modified glass fibers;
seventhly, assembling:
the assembly is that the number and the direction of the single boards are reasonably configured according to the shape and the size of the laminated bent laminated wood, and the longitudinal direction is formed between the multiple single boardsLaminating along grains, wherein the number of the layers of the veneers is determined according to the design thickness of the bent laminated wood, the thickness of the veneers and the compression ratio during bending gluing, when the veneers are assembled, the back surfaces of the veneers are in the convex surface direction, the front surfaces of the veneers are in the concave surface position, in order to effectively improve the utilization rate of the wood, a layer of plasma modified glass fiber is paved on the subsurface layers of the upper surface and the lower surface of the weakest bearing node of the laminated bent laminated wood, in order to ensure the interface bonding force between the glass fiber and the wood, an adhesive is coated on the surface of the glass fiber2The adhesive used is the same as that used for the veneer;
eighthly, bending and gluing molding:
placing the laminated bent glued wood board blank in a mould, and performing bending gluing molding by adopting high-frequency hot pressing;
eighthly, the bending glue synthesis molding process conditions are as follows: the hot pressing temperature is 120-180 ℃, the hot pressing pressure is 1.0-2.0 MPa according to the type of the adhesive, the hot pressing time is 0.05-0.1 min/mm, the working frequency is 5-14 MHz, the screen current is 2-3A, and the ratio of the screen current to the grid current is 4: 1-7: 1. The high-frequency hot pressing is adopted, and the effect of a high-frequency electromagnetic field is utilized, the medium material in the plate blank generates heat, so that electric energy is converted into heat energy, the heat transfer efficiency of the plate blank is greatly improved, the hot pressing time is shortened, and the production efficiency is obviously improved;
ninth, cooling and aging
In order to further even the internal temperature and stress of the glued bent laminated wood and reduce deformation, the bent laminated wood detached from the die needs to be placed for 4-6 days and nights, and the shape can be fully stabilized before post-processing.
The invention has the advantages that: (1) wood resources are saved: the laminated bent laminated wood prepared by the manufacturing method of the plasma modified glass fiber local reinforced laminated bent laminated wood can reduce the section size of a member of the bent wood on the premise of ensuring the strength of the integral member of the bent wood, and the material saving rate reaches more than 15%. (2) The glass fiber surface modification treatment process is simple, rapid, efficient, energy-saving and environment-friendly: according to the manufacturing method of the plasma modified glass fiber local reinforced laminated bent glued wood, the surface of the glass fiber is modified by blocking plasma with the normal-pressure medium, the manufacturing method is a dry processing technology, energy is saved, pollution is avoided, the requirements of energy conservation and emission reduction of current industrial production are met, the processing time is short, the efficiency is high, the controllability is good, and continuous automatic operation can be realized.
Detailed Description
Example 1
Cutting small-diameter fast-growing poplar into wood sections with a certain length by using a circular sawing machine, softening the wood sections in a cooking pool, and removing barks of the wood sections by using a special peeler. And then, determining the rotation center of the wood section by using a mechanical centering machine, placing the wood section on a rotary cutter by using a wood feeding machine, and carrying out rotary cutting to prepare a veneer with the thickness of 1.5 mm.
And (3) drying the poplar veneer in a mesh belt type dryer, and controlling the water content of the veneer to be 8% for later use.
Coating urea-formaldehyde glue on the surface of the single board by adopting a mechanical roller coating mode, wherein the single-side glue coating amount is 200g/m2The addition amount of the curing agent ammonium chloride is 0.5 percent, and 5 percent of industrial flour is added into the adhesive as a filler.
The glass fiber surface is modified by adopting normal pressure dielectric barrier plasma,
placing glass fiber on a feeding conveying belt of a normal-pressure dielectric barrier plasma modification device, adjusting the distance between two differentially excited dielectric barrier discharge electrodes covered by corundum ceramics to be 5mm, starting a power supply, adjusting the processing power to 3kW, enabling air between the electrodes to generate low-temperature plasma through dielectric barrier discharge, enabling the glass fiber to suspend at a speed of 20m/min and pass through a gap in the middle of the discharge electrodes, and simultaneously performing plasma modification treatment on two surfaces of the glass fiber under a normal-pressure state;
a simulation analysis is carried out on laminated bent laminated wood (the section dimension is 58 mm multiplied by 19mm) for the U-shaped chair leg by adopting finite elements, and the two bending points of the U-shaped chair leg with the weakest load-bearing node are found.
Laminating 15 layers of 1.5mm thick poplar veneers according to longitudinal grain, and forming subsurface layers on the upper surface and the lower surface of the U-shaped two bending pointsAnd respectively paving a layer of plasma modified glass fiber for local reinforcement. When assembling, the back of the single plate is in the convex direction, and the front is in the concave position. In order to ensure the interface bonding force between the glass fiber and the wood, urea-formaldehyde glue is coated on the surface of the glass fiber, and the single-side glue coating amount is 200g/m2。
And (3) placing the laminated bent glued wood board blank into a mould, and performing bending gluing molding by adopting high-frequency hot pressing. The molding process conditions are as follows: the hot pressing temperature is 120 ℃, the hot pressing pressure is 1.5MPa, the hot pressing time is 0.1min/mm, the working frequency is 10MHz, the screen current is 2A, and the ratio of the screen current to the grid current is 4: 1.
In order to further even the internal temperature and stress of the glued bent laminated wood and reduce deformation, the bent laminated wood detached from the die must be placed for 5 days and nights, so that the shape can be fully stabilized before post-processing.
Through performance detection, the laminated bent laminated wood for the U-shaped chair leg prepared by the technology has the same mechanical performance with laminated bent laminated wood (the section size is 60 multiplied by 22mm) which is not locally reinforced, namely the laminated bent laminated wood for the U-shaped chair leg prepared by the technology can save 16.52% of wood on the premise of ensuring the product quality.
Example 2
Cutting small-diameter fast-growing poplar into wood sections with a certain length by using a circular sawing machine, softening the wood sections in a cooking pool, and removing barks of the wood sections by using a special peeler. And then, determining the rotation center of the wood section by using a mechanical centering machine, placing the wood section on a rotary cutter by using a wood feeding machine, and carrying out rotary cutting to prepare a veneer with the thickness of 1.5 mm.
And (3) drying the poplar veneer in a mesh belt type dryer, and controlling the water content of the veneer to be 8% for later use.
Coating phenolic glue on the surface of a single plate in a mechanical roller coating mode, wherein the single-side gluing amount is 160g/m2The addition amount of the curing agent ammonium chloride is 0.5 percent, and 5 percent of industrial flour is added into the adhesive as a filler.
Placing glass fiber on a feeding conveying belt of a normal-pressure dielectric barrier plasma modification device, adjusting the distance between two differentially excited dielectric barrier discharge electrodes covered by corundum ceramics to be 5mm, starting a power supply, adjusting the processing power to 6kW, enabling air between the electrodes to generate low-temperature plasma through dielectric barrier discharge, enabling the glass fiber to suspend at the speed of 2m/min and pass through a gap in the middle of the discharge electrodes, and simultaneously carrying out plasma modification treatment on two surfaces of the glass fiber under the normal-pressure state;
a simulation analysis is carried out on laminated bent laminated wood (the section dimension is 52 mm multiplied by 19mm) for the U-shaped chair leg by adopting finite elements, and the two bending points of the U-shaped chair leg with the weakest load-bearing node are found.
15 layers of poplar veneers with the thickness of 1.5mm are laminated according to the longitudinal grain, and a layer of plasma modified glass fiber is respectively paved on the subsurface layers of the upper surface and the lower surface of the U-shaped two bending points for local reinforcement. When assembling, the back of the single plate is in the convex direction, and the front is in the concave position. In order to ensure the interface bonding force between the glass fiber and the wood, phenolic glue is coated on the surface of the glass fiber, and the single-side glue coating amount is 160g/m2。
And (3) placing the laminated bent glued wood board blank into a mould, and performing bending gluing molding by adopting high-frequency hot pressing. The molding process conditions are as follows: the hot pressing temperature is 150 ℃, the hot pressing pressure is 2.0MPa, the hot pressing time is 0.1min/mm, the working frequency is 10MHz, the screen current is 2A, and the ratio of the screen current to the grid current is 4: 1.
In order to further even the internal temperature and stress of the glued bent laminated wood and reduce deformation, the bent laminated wood detached from the die must be placed for 5 days and nights, so that the shape can be fully stabilized before post-processing.
Through performance detection, the laminated bent laminated wood for the U-shaped chair leg prepared by the technology has the same mechanical performance with laminated bent laminated wood (the section size is 60 multiplied by 22mm) which is not locally reinforced, namely, on the premise of ensuring the product quality, the laminated bent laminated wood for the U-shaped chair leg prepared by the technology can save 25.15% of wood.
Claims (6)
1. The manufacturing method of the plasma modified glass fiber local reinforced laminated bent glued wood is characterized in that: the plasma modified glass fiber local reinforcement laminated bent laminated veneer is prepared by the following steps:
the method comprises the following steps: preparing a single plate: firstly, cutting logs into wood sections, softening the wood sections to improve the plasticity of the wood, ensuring uniform thickness and smooth surface of a veneer, then peeling off barks, determining a rotary cutting center of the wood sections, and carrying out rotary cutting to obtain a wood veneer;
step two: drying the veneer: in order to ensure the quality of laminated, bent and glued veneers, the veneers are dried, and the moisture content after drying is controlled to be 6-12%;
step three: gluing and splicing the single plates: according to the shape and the size of the laminated bent laminated wood using occasion, the required width and length can be achieved by shearing and splicing the single plates, and the single plates are longitudinally lengthened: after the dried veneers are subjected to longitudinal and transverse edging treatment, inclined planes are milled at two ends along the texture direction of the veneers, the slope is 1: 6 to 1: 12, a urea-formaldehyde resin adhesive is coated on the inclined plane at one end of the veneers, the inclined planes of the two veneers are butted and then placed in a veneer lengthening machine to be heated so that the adhesive at the inclined planes is cured, the veneers are longitudinally lengthened along the texture direction of wood, and the veneers are transversely widened: after the dried veneers are subjected to longitudinal and transverse edging treatment, splicing the veneers into a specified width by adopting a hot melt adhesive line in a direction vertical to the texture of the veneers;
step four: gluing the single board: coating an adhesive on the surface of a single plate by adopting a mechanical roller coating mode, wherein the single-surface gluing amount is 150-220 g/m2The addition amount of the curing agent ammonium chloride is 0.3-1% depending on the thickness of the glue seeds, the tree seeds, the veneers and the like, and 5-10% of industrial flour is added into the adhesive to be used as a filler;
step five: glass fiber plasma modification treatment: modifying the surfaces of glass fibers by adopting normal-pressure dielectric barrier plasma, placing the glass fibers on a feeding conveying belt of a normal-pressure dielectric barrier plasma modifying device, adjusting the distance between differentially excited dual-dielectric barrier discharge electrodes covered by corundum ceramics, wherein the range value is 5-10 mm, starting a power supply, adjusting the processing power to 3-6 KW, enabling air between the electrodes to generate low-temperature plasma through dielectric barrier discharge, enabling the glass fibers to suspend in the air at the speed of 2-40 m/min and pass through a gap in the middle of a discharge electrode, and simultaneously performing plasma modification treatment on the two surfaces of the glass fibers under the normal-pressure state;
step six: the design of the local reinforcing structure of the laminated bent laminated wood comprises the following steps: simulating and analyzing laminated bent laminated veneers with different shapes and sizes by adopting a finite element, finding out a node with the weakest bearing capacity, and laying plasma modified glass fibers for local reinforcement aiming at the node;
step seven: assembling: the method comprises the steps of reasonably configuring the number and direction of single boards according to the shape and size of the laminated bent laminated veneer lumber, wherein the longitudinal grain lamination is adopted among the multiple single boards, the number of the single boards is determined according to the design thickness of the bent laminated veneer lumber, the thickness of the single boards and the compression ratio during bending gluing, during assembly, the back surfaces of the single boards are in the convex surface direction, the front surfaces of the single boards are in the concave surface position, in order to effectively improve the utilization rate of the lumber, a layer of plasma modified glass fiber is respectively paved on the subsurface layers of the upper surface and the lower surface of the laminated bent laminated veneer lumber at the bearing weakest node, in order to ensure the interface bonding force between the glass fiber and the2The adhesive used is the same as that used for the veneer;
step eight: bending and gluing molding: placing the laminated bent glued wood board blank in a mould, and performing bending gluing molding by adopting high-frequency hot pressing;
step nine: cooling and ageing: in order to further even the internal temperature and stress of the glued bent laminated wood and reduce deformation, the bent laminated wood detached from the die must be placed for 4-6 days and nights, and the shape can be fully stabilized before post-processing.
2. The plasma modified glass fiber partially reinforced laminated curved glued wood manufacturing method according to claim 1, characterized in that: the thickness of the single plate in the step one is 0.5-3 mm, and the thickness deviation of the single plate is less than +/-0.05 mm.
3. The plasma modified glass fiber partially reinforced laminated curved glued wood manufacturing method according to claim 1, characterized in that: drying the single board in the second step, when the thickness of the single board is smaller (the thickness is less than 2mm), directly drying the single board by using a mesh belt type dryer, when the thickness of the single board is thicker (the thickness is more than or equal to 2mm), firstly performing air injection pre-drying on the wood single board by using a roller dryer or the mesh belt type dryer, then drying the wood single board to a target water content range by using a hot plate dryer under a certain pressure condition, and controlling the hot plate drying pressure to be 0.1-0.3 MPa.
4. The plasma modified glass fiber partially reinforced laminated curved glued wood manufacturing method according to claim 1, characterized in that: when the wood veneer is longitudinally connected in the third step, the dosage of the urea-formaldehyde resin adhesive is 100-120 g/m2The heating temperature is 100-120 ℃.
5. The plasma modified glass fiber partially reinforced laminated curved glued wood manufacturing method according to claim 1, characterized in that: and fourthly, the adhesive used for gluing the veneer is one of urea-formaldehyde glue, melamine modified urea-formaldehyde glue, mixed glue of urea-formaldehyde glue and white glue, and phenolic glue.
6. The plasma modified glass fiber partially reinforced laminated curved glued wood manufacturing method according to claim 1, characterized in that: eighthly, the bending glue synthesis molding process conditions are as follows: the hot pressing temperature is 120-180 ℃, the hot pressing pressure is 1.0-2.0 MPa according to the types of the adhesives, the hot pressing time is 0.05-0.1 min/mm, the working frequency is 5-14 MHz, the screen current is 2-3A, the ratio of the screen current to the grid current is 4: 1-7: 1, high-frequency hot pressing is adopted, the medium material in the plate blank generates heat under the action of a high-frequency electromagnetic field, electric energy is converted into heat energy, the heat transfer efficiency of the plate blank is greatly improved, the hot pressing time is shortened, and the production efficiency is remarkably improved.
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