CN108297220A - Fast growing wood is inorganic modified and microwave treatment combines method of modifying - Google Patents

Fast growing wood is inorganic modified and microwave treatment combines method of modifying Download PDF

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Publication number
CN108297220A
CN108297220A CN201711387791.8A CN201711387791A CN108297220A CN 108297220 A CN108297220 A CN 108297220A CN 201711387791 A CN201711387791 A CN 201711387791A CN 108297220 A CN108297220 A CN 108297220A
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China
Prior art keywords
microwave treatment
timber
modifying
fast growing
wood
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CN201711387791.8A
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Chinese (zh)
Inventor
柯少佳
闫小星
张碧莲
徐伟
黄彦慧
钱星雨
刘霞
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Yihua Life Polytron Technologies Inc
Nanjing Forestry University
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Yihua Life Polytron Technologies Inc
Nanjing Forestry University
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Priority to CN201711387791.8A priority Critical patent/CN108297220A/en
Publication of CN108297220A publication Critical patent/CN108297220A/en
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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
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
    • 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
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/007—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process employing compositions comprising nanoparticles
    • 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
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • 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
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B27K3/18—Compounds of alkaline earth metals
    • 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
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B27K3/20—Compounds of alkali metals or ammonium
    • 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
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
    • 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
    • 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
    • B27K5/003—Treating of wood not provided for in groups B27K1/00, B27K3/00 by using electromagnetic radiation or mechanical waves
    • B27K5/0055—Radio-waves, e.g. microwaves
    • 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
    • B27K2240/00—Purpose of the treatment
    • 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
    • B27K2240/00—Purpose of the treatment
    • B27K2240/20—Removing fungi, molds or insects
    • 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
    • B27K2240/00—Purpose of the treatment
    • B27K2240/30—Fireproofing

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Nanotechnology (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The present invention relates to a kind of fast growing wood is inorganic modified and microwave treatment combines method of modifying, include the following steps：1, according to double agent diffusion methods, by CaCl2And Na2CO3Two kinds of soluble inorganic salt alternating impregnating timber form CaCO in wood internal3.2, the timber after impregnating carries out boiling desalting processing.3, solidification of the permeability and nanometer materials of microwave treatment improvement timber in wood internal.4, organo montmorillonite is blended with phenolic resin, forms phenolic resin organo montmorillonite maceration extract, using vacuum suction method by maceration extract immersing wood.5, the timber after microwave treatment is impregnated promotes impregnating fluid to cure.Advantage：1, not needing spray water prevents its cracking, pending timber from can directly impregnate in solution, not only saves the modification time and more saves manpower.2, the moisture in timber is replaced with into maceration extract, microwave treatment improves the fluid permeability of timber, and the inorganic salts of early period impregnate the mechanical strength with the nano-filled raising timber in later stage, anti-corrosion and the performances such as fire-retardant.

Description

Fast growing wood is inorganic modified and microwave treatment combines method of modifying
Technical field
The present invention is that a kind of fast growing wood is inorganic modified and microwave treatment combines method of modifying, belongs to Wooden modifying field.
Background technology
Timber, steel, cement, plastics are generally acknowledged in the world four big materials, and timber is unique renewable drop The material of solution.Along with expanding economy, the finiteness of resource, this natural material of timber have all been recognized in global range It has attracted more and more attention from people, the implementation however as country to natural forests protective policy, there is an urgent need to pass through timber by people Modified the problems such as improving soft artificial forest wood material, poor mechanical property, mutability, to meet the needs of furniture market.In recent years Come being and not being machine be modified it is environmentally safe, make people start increasingly to pay close attention to inorganic modified fast-growing to the features such as no damage to human body The processing mode of material, while providing new thinking with the appearance particularly people of microwave treatment this new modification mode.
Invention content
Proposed by the present invention is that a kind of fast growing wood is inorganic modified and microwave treatment combines method of modifying, and its object is to be directed to The problems such as fast growing wood material is soft, poor mechanical property, mutability, provide a kind of mechanical property that can improve fast growing wood simultaneously, The method of modifying of fluid permeability, dimensional stability, bending strength and rotproofness.
Technical solution of the invention：Fast growing wood is inorganic modified and microwave treatment combines method of modifying, including following step Suddenly：
1）Vacuum impregnation is handled；
2）Boiling desalting processing；
3）Microwave treatment；
4）Vacuum suction method immersing wood；
5）Microwave treatment cures impregnating fluid.
Beneficial effects of the present invention：
1, not needing spray water prevents its cracking, pending timber from can directly impregnate in solution, has not only saved modified place The reason time more saves manpower；
2, the moisture in timber is replaced with into maceration extract, microwave treatment improves the fluid permeability of timber, the inorganic salts of early period Impregnate the nano-filled mechanical strength for improving timber with the later stage, anti-corrosion and the performances such as fire-retardant.
Specific implementation mode
Fast growing wood is inorganic modified and microwave treatment combines method of modifying, includes the following steps：
1）Vacuum impregnation is handled；
2）Boiling desalting processing；
3）Microwave treatment；
4）Vacuum suction method immersing wood；
5）Microwave treatment cures impregnating fluid.
The step 1）Vacuum impregnation is handled, and is comprised the following steps that：
（1）It is evacuated to -0.1MPa, keeps 20min, is forced into 0.4MPa, 20min is kept, uses CaCl at room temperature2Solution soaks Stain fast growing wood 3-12 hours；
（2）At a temperature of 30 DEG C -90 DEG C, Na is used2CO3Solution impregnates 6-18 hours；
（3）At a temperature of 30 DEG C -90 DEG C, CaCl is used2Solution impregnates 6-18 hours；
（4）At a temperature of 30 DEG C -90 DEG C, Na is used2CO3Solution impregnates 6-18 hours.
The step 2）Boiling desalting processing：Boiling desalting processing carried out to processed timber, 90 DEG C of boilings 2 hours, Remove extra sodium carbonate and calcium chloride and the sodium chloride of generation.
The step 3）Microwave treatment：Microwave treatment timber 30-120s, 2000W.
The step 4）Vacuum suction method immersing wood：Organo montmorillonite is blended with phenolic resin, organo montmorillonite quality Score is 3%-6%, forms phenolic resin-organo montmorillonite maceration extract and is evacuated to -0.1MPa using vacuum suction method, keeps Then 20min is forced into 0.4MPa, keep 20min.
The step 5）Microwave treatment cures impregnating fluid：Cure 60-150s, 2000W with microwave treatment.
The CaCl2Solution is the CaCl that mass concentration is 30%-50%2Solution.
The Na2CO3Solution is the Na that mass concentration is 15%-35%2CO3Solution.
Embodiment 1：
（1）With a concentration of 30% CaCl2Solution impregnated timber is evacuated to -0.1MPa using vacuum pressed absorption method, keeps Then 20min is forced into 0.4MPa, keep 20min, and impregnate 6 hours at normal temperatures；
（2）Under normal pressure state, it is 30 DEG C to keep temperature, with a concentration of 15% Na2CO3Impregnated timber 12 hours；
（3）Under normal pressure state, it is 30 DEG C to keep temperature, with a concentration of 30% CaCl2Impregnated timber 12 hours；
（4）Under normal pressure state, it is 30 DEG C to keep temperature, with a concentration of 15% Na2CO3Impregnated timber 12 hours；
（5）Boiling desalting processing is carried out to processed timber, removes extra sodium carbonate and calcium chloride and the sodium chloride of generation Equal salts；
（6）Microwave treatment timber 60s；
（7）It is blended with phenolic resin with 3% organo montmorillonite, phenolic resin-organo montmorillonite maceration extract is formed, using true Empty absorption method is evacuated to -0.1MPa, keeps 20min, is then forced into 0.4MPa, keeps 20min；
（8）Cure 120s with micro-wave oven.
Embodiment 2：
（1）With a concentration of 40% CaCl2Solution impregnated timber is evacuated to -0.1MPa using vacuum pressed absorption method, keeps Then 20min is forced into 0.4MPa, keep 20min, and impregnate 3 hours at normal temperatures；
（2）Under normal pressure state, it is 30 DEG C to keep temperature, with a concentration of 20% Na2CO3Impregnated timber 6 hours；
（3）Under normal pressure state, it is 30 DEG C to keep temperature, with a concentration of 40% CaCl2Impregnated timber 6 hours；
（4）Under normal pressure state, it is 30 DEG C to keep temperature, with a concentration of 20% Na2CO3Impregnated timber 6 hours；
（5）Boiling desalting processing is carried out to processed timber, removes extra sodium carbonate and calcium chloride and the sodium chloride of generation Equal salts；
（6）Microwave treatment timber 60s；
（7）It is blended with phenolic resin with 4% organo montmorillonite, forms phenolic resin-organo montmorillonite maceration extract, utilize vacuum Absorption method is evacuated to -0.1MPa, keeps 20min, is then forced into 0.4MPa, keeps 20min；
（8）Cure 60s with micro-wave oven.
Embodiment 3：
（1）With a concentration of 40% CaCl2Solution impregnated timber is evacuated to -0.1MPa using vacuum pressed absorption method, keeps Then 20min is forced into 0.4MPa, keep 20min, and impregnate 12 hours at normal temperatures；
（2）Under normal pressure state, it is 60 DEG C to keep temperature, with a concentration of 25% Na2CO3Impregnated timber 18 hours；
（3）Under normal pressure state, it is 60 DEG C to keep temperature, with a concentration of 40% CaCl2Impregnated timber 18 hours；
（4）Under normal pressure state, it is 60 DEG C to keep temperature, with a concentration of 25% Na2CO3Impregnated timber 18 hours；
（5）Boiling desalting processing is carried out to processed timber, removes extra sodium carbonate and calcium chloride and the sodium chloride of generation Equal salts；
（6）Microwave treatment timber 120s；
（7）It is blended with phenolic resin with 6% organo montmorillonite, forms phenolic resin-organo montmorillonite maceration extract, utilize vacuum Absorption method is evacuated to -0.1MPa, keeps 20min, is then forced into 0.4MPa, keeps 20min；
（8）Cure 100s with micro-wave oven.
Embodiment 4：
（1）With a concentration of 30% CaCl2Solution impregnated timber is evacuated to -0.1MPa using vacuum pressed absorption method, keeps Then 20min is forced into 0.4MPa, keep 20min, and impregnate 6 hours at normal temperatures；
（2）Under normal pressure state, it is 90 DEG C to keep temperature, with a concentration of 25% Na2CO3Impregnated timber 12 hours；
（3）Under normal pressure state, it is 90 DEG C to keep temperature, with a concentration of 30% CaCl2Impregnated timber 12 hours；
（4）Under normal pressure state, it is 90 DEG C to keep temperature, with a concentration of 25% Na2CO3Impregnated timber 12 hours；
（5）Boiling desalting processing is carried out to processed timber, removes extra sodium carbonate and calcium chloride and the sodium chloride of generation Equal salts；
（6）Microwave treatment timber 60s；
（7）It is blended with phenolic resin with 5% organo montmorillonite, forms phenolic resin-organo montmorillonite maceration extract, utilize vacuum Absorption method is evacuated to -0.1MPa, keeps 20min, is then forced into 0.4MPa, keeps 20min；
（8）Cure 90s with micro-wave oven.
Embodiment 5：
（1）With a concentration of 50% CaCl2Solution impregnated timber is evacuated to -0.1MPa using vacuum pressed absorption method, keeps Then 20min is forced into 0.4MPa, keep 20min, and impregnate 3 hours at normal temperatures；
（2）Under normal pressure state, it is 90 DEG C to keep temperature, with a concentration of 30% Na2CO3Impregnated timber 6 hours；
（3）Under normal pressure state, it is 90 DEG C to keep temperature, with a concentration of 50% CaCl2Impregnated timber 6 hours；
（4）Under normal pressure state, it is 90 DEG C to keep temperature, with a concentration of 30% Na2CO3Impregnated timber 6 hours；
（5）Boiling desalting processing is carried out to processed timber, removes extra sodium carbonate and calcium chloride and the sodium chloride of generation Equal salts；
（6）Microwave treatment timber 60s；
（7）It is blended with phenolic resin with 5% organo montmorillonite, forms phenolic resin-organo montmorillonite maceration extract, utilize vacuum Absorption method is evacuated to -0.1MPa, keeps 20min, is then forced into 0.4MPa, keeps 20min；
（8）Cure 150s with micro-wave oven.
Embodiment 6：
（1）With a concentration of 40% CaCl2Solution impregnated timber is evacuated to -0.1MPa using vacuum pressed absorption method, keeps Then 20min is forced into 0.4MPa, keep 20min, and impregnate 6 hours at normal temperatures；
（2）Under normal pressure state, it is 60 DEG C to keep temperature, with a concentration of 25% Na2CO3Impregnated timber 12 hours；
（3）Under normal pressure state, it is 60 DEG C to keep temperature, with a concentration of 40% CaCl2Impregnated timber 12 hours；
（4）Under normal pressure state, it is 60 DEG C to keep temperature, with a concentration of 25% Na2CO3Impregnated timber 12 hours；
（5）Boiling desalting processing is carried out to processed timber, removes extra sodium carbonate and calcium chloride and the sodium chloride of generation Equal salts；
（6）Microwave treatment timber 30s；
（7）It is blended with phenolic resin with 5% organo montmorillonite, forms phenolic resin-organo montmorillonite maceration extract, utilize vacuum Absorption method is evacuated to -0.1MPa, keeps 20min, is then forced into 0.4MPa, keeps 20min；
（8）Cure 90s with micro-wave oven.
Embodiment 7：
（1）With a concentration of 30% CaCl2Solution impregnated timber is evacuated to -0.1MPa using vacuum pressed absorption method, keeps Then 20min is forced into 0.4MPa, keep 20min, and impregnate 12 hours at normal temperatures；
（2）Under normal pressure state, it is 60 DEG C to keep temperature, with a concentration of 15% Na2CO3Impregnated timber 18 hours；
（3）Under normal pressure state, it is 60 DEG C to keep temperature, with a concentration of 30% CaCl2Impregnated timber 18 hours；
（4）Under normal pressure state, it is 60 DEG C to keep temperature, with a concentration of 15% Na2CO3Impregnated timber 18 hours；
（5）Boiling desalting processing is carried out to processed timber, removes extra sodium carbonate and calcium chloride and the sodium chloride of generation Equal salts；
（6）Microwave treatment timber 60s；
（7）It is blended with phenolic resin with 3% organo montmorillonite, forms phenolic resin-organo montmorillonite maceration extract, utilize vacuum Absorption method is evacuated to -0.1MPa, keeps 20min, is then forced into 0.4MPa, keeps 20min；
（8）Cure 120s with micro-wave oven.
Mechanism of modification
（1）Double agent diffusion methods make inorganic salts impregnated timber.By two kinds of soluble inorganic salt impregnated timbers, handed over according to its zwitterion Promote inorganic salts to enter wood internal to chemically react for the principle of diffusion.According to Fajans（Fajans）- Pan Nisi （Paneth）Rule：Solid always consumingly from certain ion on adsorption energy in electrolyte solution and the surface of solids formed indissoluble or The counter ion of insoluble compound.With this first by wood impregnation to CaCl2It is impregnated in solution, will there is Ca in timber2+, then Place into Na2CO3It is impregnated in solution, before Ca present in timber2+Because can be with CO3 2-Form object CaCO hard to tolerate3, more promote Into to Na2CO3Impregnate, the alternating impregnating of two kinds of solution can promote impregnation of timber well；
（2）Microwave Pretreatment timber increases its fluid permeability.Microwave treatment can activate microcosmic absorption point, can promote nanometer Montmorillonite-phenolic resin blend of grade and the firm associative key of wood formation, and the microwave treatment in later stage is conducive to phenolic aldehyde The solidification of resin.Microwave treatment timber is directed to moist wood, and the timber after can directly impregnating inorganic salts carries out microwave treatment. The presence of zwitterion promotes timber electric conductivity, reduces microwave treatment difficulty, and then under the action of frequent alternating electric field, promotees Into the interaction of zwitterion, alternately spreads, increase its permeability；
（3）Timber has the gap more than nano-scale dimension, and minimum general 4-5 um of pore or so, there is also nanoscales for timber The media voids of (1-100 nm) scale, therefore timber possesses the ability for accommodating nanometer materials.Impregnating for inorganic salts is filled with The gap of common scale in timber, microwave treatment promote timber fluid permeability to enhance, further promote the leaching of other inorganic matters Note.Nano-meter CaCO3 is generated using alternating impregnating3Powder impregnates in timber, on this basis and with organo montmorillonite and phenolic aldehyde tree Fat is blended to form phenolic resin-organo montmorillonite maceration extract, can further enhance the surface characteristic and mechanical property of timber.

Claims (8)

1. fast growing wood is inorganic modified and microwave treatment combines method of modifying, it is characterised in that include the following steps：
（1）Vacuum impregnation is handled；
（2）Boiling desalting processing；
（3）Microwave treatment；
（4）Vacuum suction method immersing wood；
（5）Microwave treatment cures impregnating fluid.
2. combining method of modifying with microwave treatment according to claim 1 fast growing wood is inorganic modified, it is characterised in that the step（1） Vacuum impregnation is handled, and is comprised the following steps that：
1）It is evacuated to -0.1MPa, keeps 20min, is forced into 0.4MPa, 20min is kept, uses CaCl at room temperature2Solution impregnates Fast growing wood 3-12 hours；
2）At a temperature of 30 DEG C -90 DEG C, Na is used2CO3Solution impregnates 6-18 hours；
3）At a temperature of 30 DEG C -90 DEG C, CaCl is used2Solution impregnates 6-18 hours；
4）At a temperature of 30 DEG C -90 DEG C, Na is used2CO3Solution impregnates 6-18 hours.
3. combining method of modifying with microwave treatment according to claim 1 fast growing wood is inorganic modified, it is characterised in that the step（2） Boiling desalting processing：Boiling desalting processing carried out to processed timber, 90 DEG C of boilings 2 hours, remove extra sodium carbonate and Calcium chloride and the sodium chloride of generation.
4. combining method of modifying with microwave treatment according to claim 1 fast growing wood is inorganic modified, it is characterised in that the step（3） Microwave treatment：Microwave treatment timber 30-120s, 2000W.
5. combining method of modifying with microwave treatment according to claim 1 fast growing wood is inorganic modified, it is characterised in that the step（4） Vacuum suction method immersing wood：Organo montmorillonite is blended with phenolic resin, and organo montmorillonite mass fraction is 3%-6%, forms phenol Urea formaldehyde-organo montmorillonite maceration extract is evacuated to -0.1MPa using vacuum suction method, keeps 20min, is then forced into 0.4MPa keeps 20min.
6. combining method of modifying with microwave treatment according to claim 1 fast growing wood is inorganic modified, it is characterised in that the step（5） Microwave treatment cures impregnating fluid：Microwave treatment cures impregnating fluid 60-150s, 2000W.
7. combining method of modifying with microwave treatment according to claim 2 fast growing wood is inorganic modified, it is characterised in that the CaCl2It is molten Liquid is the CaCl that mass concentration is 30%-50%2Solution.
8. combining method of modifying with microwave treatment according to claim 2 fast growing wood is inorganic modified, it is characterised in that the Na2CO3It is molten Liquid is the Na that mass concentration is 15%-35%2CO3Solution.
CN201711387791.8A 2017-12-20 2017-12-20 Fast growing wood is inorganic modified and microwave treatment combines method of modifying Pending CN108297220A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900011652A1 (en) * 2019-07-12 2021-01-12 Eng Consulting Promotion Sagl PROCESS FOR MINERALIZING WOOD AND MINERALIZED WOOD SO OBTAINED
CN114953074A (en) * 2022-05-25 2022-08-30 安徽农业大学 Wood heat treatment method capable of carrying out in-situ restoration and modified wood obtained by same

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CN103171007A (en) * 2011-12-26 2013-06-26 福建省漳平木村林产有限公司 Production method of crack-resistant and corrosion-resistant wood and impregnating liquid
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IT201900011652A1 (en) * 2019-07-12 2021-01-12 Eng Consulting Promotion Sagl PROCESS FOR MINERALIZING WOOD AND MINERALIZED WOOD SO OBTAINED
CN114953074A (en) * 2022-05-25 2022-08-30 安徽农业大学 Wood heat treatment method capable of carrying out in-situ restoration and modified wood obtained by same

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Application publication date: 20180720