CN107336311A - A kind of method for strengthening woodwork part processing - Google Patents

A kind of method for strengthening woodwork part processing Download PDF

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Publication number
CN107336311A
CN107336311A CN201610279038.6A CN201610279038A CN107336311A CN 107336311 A CN107336311 A CN 107336311A CN 201610279038 A CN201610279038 A CN 201610279038A CN 107336311 A CN107336311 A CN 107336311A
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CN
China
Prior art keywords
woodwork
dried
pressurize
moisture content
dry
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CN201610279038.6A
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Chinese (zh)
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CN107336311B (en
Inventor
李重根
李勇
迟正林
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South China Agricultural University
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South China Agricultural University
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Classifications

    • 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
    • B27K5/007—Treating of wood not provided for in groups B27K1/00, B27K3/00 using pressure
    • B27K5/0075—Vacuum
    • 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
    • B27K3/34—Organic impregnating agents
    • B27K3/36—Aliphatic 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
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/34—Organic impregnating agents
    • B27K3/38—Aromatic 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
    • B27K5/04—Combined bleaching or impregnating and drying of wood
    • 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
    • B27K2200/00—Wooden materials to be treated
    • B27K2200/10—Articles made of particles or fibres consisting of wood or other lignocellulosic material

Abstract

The present invention relates to a kind of method for strengthening woodwork part processing, including following processing step：1), woodwork part is dried, then carries out being evacuated to 0.06~0.08MPa, and keep 30~60min of vacuum；2), under vacuum state, modification liquid is sucked using negative pressure, after woodwork part is modified liquid submergence, closes injection valve；3), pressurize, 30~60min of pressurize when pressure reaches 0.6~0.8MPa, release, wipe the modification liquid of woodwork piece surface, be drying to obtain.The surface strength of woodwork part after surface enhanced of the present invention processing is strengthened, and overall dimensions are stable, good mechanical performance；Because various woodwork parts, without advanced treating, save modification medicament after processing, simplify handling process, reduce modification cost, and easy industrialization.

Description

A kind of method for strengthening woodwork part processing
Technical field
The present invention relates to a kind of wood processing treatment method, more particularly to a kind of method for strengthening woodwork part processing.
Background technology
The scarcity of natural high-quality wooden resource so that quick-growing plantation timber turns into the main of woodwork industry and uses material, but speed Raw artificial forest wood material is loose, low intensity, particularly case hardness deficiency so that and Hepplewhite product structure is loose, Low intensity, surface abrasion resistance are poor.
Based on disadvantages mentioned above, industry widespread practice is to carry out enhancing modification to quick-growing plantation timber, with acquired Energy being capable of processing same or analogous with high-quality timber and utility.But because current this impregnation method is to be directed to What sawn timber was carried out, because the dimensions of sawn timber is larger, inorganic agent is difficult to enter wood internal, timber under normal circumstances The treatment fluid retention ratio on surface can be higher than wood internal, thus the intensity on surface also can be more higher than internal, and more toward center The intensity at position is lower, the physical characteristic cutd open inside and outside timber, and for example the drying shrinkage bulking phenomenon of timber can also have differences.Will This material by Cutting indexes into part, because the position in reason material in original place at each surface of part is different, its physical force Learn characteristic also to differ, dimensional stability is more worse than untreated material.
In addition, by the use of this processing material as raw material processing and fabricating woodwork part, necessarily there is substantial amounts of processing material to be cut Chip is whittled into, wastes the material handled well, not only increases the manufacturing cost of woodwork, and handle and processing technology It is more complicated.Based on background above,
The content of the invention
In order to solve the above-mentioned problems in the prior art, there is provided a kind of method for strengthening woodwork part processing, should Method enables to the overall physical and mechanical property raising in the case of keeping original geomery constant of woodwork part.
The technical purpose of the present invention is achieved by the following technical solution：
The method provided by the invention for strengthening woodwork part processing, including following processing step：
1), woodwork part is dried, then carries out being evacuated to 0.06~0.08MPa, and keep 30~60min of vacuum；
2), under vacuum state, modification liquid is sucked using negative pressure, after woodwork part is modified liquid submergence, closes injection Valve；
3), pressurize, 30~60min of pressurize when pressure reaches 0.6~0.8MPa, release, erasing woodwork piece surface Modification liquid, it is drying to obtain.
Preferably, the woodwork part is fast-growing Chinese fir product part, quick growth poplar wood product part or fast-growing pine to the present invention Woodwork part.
Further, the first moisture content of the woodwork part described in the step 1) is 8%~16% to the present invention, is contained after drying Water rate is 0%~6%.
Further, modification liquid is Lauxite, phenolic resin or methymethacrylate to the present invention in the step 2) Monomer.
As the important step of the present invention, drying process is to ensure that woodwork part does not occur in the step 1) and step 3) Premised on craze and transfiguration, by drying process, so that small size part size in enhanced processes deforms, rate is small.
Further, the dried moisture content of step 3) is 8~12% to the present invention.
Preferably, the woodwork part is fast-growing Chinese fir product part to the present invention, and the step 3) uses following back tender Skill：Fast-growing Chinese fir part is put into dry kiln, dry dry-bulb temperature at initial stage is 55~60 DEG C, wet-bulb temperature is 55~60 DEG C, Insulation is warming up to 75~80 DEG C of dry-bulb temperature after 5~6 hours, wet-bulb temperature is 65~70 DEG C, dries until woodwork part contains Water rate 10%~12%.
Preferably, the woodwork part is quick growth poplar wood product part to the present invention, and the drying process of the step 3) uses Following manner：Quick growth poplar wood product part is reentered into vacuum pressed tank, and is forced into 0.6~0.8MPa, pressurize is simultaneously Vacuum pressed tank is heated, is warming up to 75~80 DEG C, 1h is incubated, release, takes out part, part is placed in air and inhaled It is wet to equilibrium moisture content 9~10%.
Beneficial effects of the present invention：
Compared with prior art, it is of the present invention that beneficial effect possessed by the method for processing is strengthened to woodwork part：
The present invention is to being to carry out surface enhanced modification to woodwork part so that modified woodwork part integrity can be excellent Good, surface strength is strengthened, and dimensionally stable deforms small；Various woodwork parts not only save without advanced treating About modification dosing, simplify handling process, reduce modification cost, and easy industrialization.
Embodiment
In order that the object, technical solutions and advantages of the present invention are definitely, the preferred embodiments of the present invention are carried out below Detailed description, but the present invention is not limited to preferred embodiment.
Embodiment 1
It is by fast-growing Chinese fir sawing growth 305mm, wide 31mm, thick 21mm woodwork part, first moisture content 12%.Raw China fir part is placed in the dry kiln that temperature is 100 DEG C and is dried to moisture content 4% or so, is put it into true In empty pressurized canister, 0.08Mpa is evacuated to, keeps 30min, in the case where keeping vacuum, using negative pressure by solid content The Lauxite that (mass concentration) is 45% is injected in vacuum pressed tank, when Lauxite submerges part in vacuum pressurized canister Afterwards, injection valve is closed.Pressure is injected into vacuum pressed tank, when pressure reaches 0.8Mpa, pressurize 30min, release Afterwards, woodwork part is taken out and wipes surface modifier, part is put into dry kiln and dried, it is dry, wet to dry initial stage Ball temperature is respectively 60 DEG C and 55 DEG C, be warming up to after 4 hours dry, moistening ball temperature be respectively 90 DEG C and 65 DEG C until part, Moisture content 10% or so terminates, then by part on sander, each sand removes 1mm on width and on thickness direction, 5mm is clipped on length direction, final size 300*30*20mm, produces the part after processing.With it is non-modified Fast-growing Chinese fir part is compared, and through standard detection, the dry contract with dry rate of the modified tangential gas of woodwork part declines 35.7%, footpath Decline 23.5% to the dry contract with dry rate of gas, size is more stable, chord plane hardness increase by 41.5%, and footpath surface hardness increase by 37.1% is suitable Line pressure resistance weights and measures 22.3%, intensity is higher, and specific data are as shown in table 1.
Embodiment 2
It is by fast-growing Chinese fir sawing growth 605mm, wide 41mm, thick 41mm woodwork part, first moisture content 12.5%, woodwork part is placed in the dry kiln that temperature is 100 DEG C and is dried to moisture content 6% or so, then by it It is put into vacuum pressed tank, vacuumizes about 50min., will be by solid content (matter using negative pressure in the case where keeping vacuum Measure concentration) injected for 45% Lauxite in vacuum pressed tank, when modification liquid submerges woodwork part in vacuum pressurized canister Afterwards, injection valve is closed.Pressure is injected into vacuum pressed tank, when pressure reaches 0.8Mpa, pressurize 60min, release Afterwards, part is taken out and wipes its surface modifier, part is put into dry kiln, done initial stage of drying, wet-bulb temperature point It is respectively 80 DEG C and 65 DEG C until part, is dried to that dry, moistening ball temperature Wei not be warming up to after 60 DEG C and 55 DEG C, 6 hours Moisture content 11% or so, then each sand of the thickness and width of woodwork part is cut into 1mm, woodwork part is in the longitudinal direction Clip 5mm, final size 600*40*40mm.Compared with non-modified fast-growing Chinese fir part, by standard detection, The tangential dry contract with dry rate of gas declines 23.1%, and the dry contract with dry rate of radial direction gas declines 31.7%, and size is more stable, the increase of chord plane hardness 36.4%, footpath surface hardness increase by 31.0%, parallel-to-grain compressive strength amount weighing apparatus 47%, intensity is higher, and specific data are as shown in table 1.
Embodiment 3
Quick growth poplar wood sawn timber is grown into processing growth 805mm, wide 201mm, thick 21mm woodwork part, first moisture content For 11.5%.It is over dry to be dried in 100 DEG C of dry kiln (moisture content is that the rear woodwork part of processing is placed in into temperature 0), put it into vacuum pressed tank, be evacuated to 0.08Mpa, keep about 60min.In the case where keeping vacuum, MAL methylmethacrylate monomer is injected in vacuum pressed tank using negative pressure, when methyl methacrylate list in vacuum pressurized canister After body submergence woodwork part, injection valve is closed.Enter pressure into vacuum pressed tank, when pressure reaches 0.8Mpa, protect 60min is pressed, after release, part is taken out and wipes the methyl methacrylate on surface, and wipes in vacuum pressed tank and remains Remaining methyl methacrylate, woodwork part is reentered into vacuum pressed tank, and is forced into 0.7MPa again, Under conditions of keeping pressure, vacuum pressed tank heat and is warming up to 80 DEG C, be incubated 1h, release, taking-up part, by zero Part is placed in air moisture absorption to equilibrium moisture content (moisture content 10% or so), then the thickness and width of woodwork part is each Sand cuts 1mm, clips 5mm in the longitudinal direction, is finally processed into 800*200*30mm part.With it is non-modified Fast-growing Chinese fir part is compared, and by standard detection, the dry contract with dry rate of the tangential gas of modified part declines 34.7%, radial direction gas Dry contract with dry rate declines 40.8%, and size is more stable, and chord plane hardness increase by 43.6%, footpath surface hardness increase by 37.7%, rift grain resists Pressure weights and measures 35.9%, intensity is higher, and specific data are as shown in table 1.
The performance test data of table 1
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to this The restriction of the embodiment of invention.For those of ordinary skill in the field, may be used also on the basis of the above description To make other changes in different forms.Here all embodiments can not be exhaustive.It is every to belong to this Row of the obvious changes or variations that the technical scheme of invention is extended out still in protection scope of the present invention.

Claims (8)

  1. A kind of 1. method for strengthening woodwork part processing, it is characterised in that including following processing step：
    1), woodwork part is dried, then carries out being evacuated to 0.06~0.08MPa, and keep vacuum 30~60min；
    2), under vacuum state, modification liquid is sucked using negative pressure, after woodwork part is modified liquid submergence, is closed Close injection valve；
    3), pressurize, 30~60min of pressurize when pressure reaches 0.6~0.8MPa, release, wipe woodwork zero The modification liquid on part surface, is drying to obtain.
  2. 2. method according to claim 1 or 2, it is characterised in that the woodwork part is fast-growing China fir product part, quick growth poplar wood product part or fast-growing pine product part.
  3. 3. method according to claim 1 or 2, it is characterised in that wooden described in the step 1) The first moisture content of product part is 8%~16%, and moisture content is 0%~6% after drying.
  4. 4. method according to claim 1 or 2, it is characterised in that modification liquid is in the step 2) Lauxite, phenolic resin or methyl methacrylate monomer.
  5. 5. method according to claim 1 or 2, it is characterised in that dried in the step 1) and step 3) Technique is premised on ensureing that craze and transfiguration does not occur for woodwork part.
  6. 6. method according to claim 1 or 2, it is characterised in that the step 3) is dried to be contained Water rate is 8~12%.
  7. 7. according to the method for claim 6, it is characterised in that the woodwork part is fast-growing Chinese fir Product part, the step 3) use following drying process：Fast-growing Chinese fir part is put into dry kiln, dried Initial stage dry-bulb temperature be 55~60 DEG C, wet-bulb temperature be 55~60 DEG C, insulation 5~6 hours after be warming up to dry bulb temperature 75~80 DEG C of degree, wet-bulb temperature are 65~70 DEG C, are dried until woodwork part moisture content 10%~12%.
  8. 8. according to the method for claim 6, it is characterised in that the woodwork part is quick growth poplar wood Product part, the drying process of the step 3) is in the following way：Quick growth poplar wood product part is reentered into In vacuum pressed tank, and 0.6~0.8MPa being forced into, pressurize is simultaneously heated to vacuum pressed tank, is warming up to 75~80 DEG C, 1h is incubated, release, takes out part, part is placed in air moisture absorption to equilibrium moisture content 9~10%.
CN201610279038.6A 2016-04-29 2016-04-29 A kind of method of pair of woodwork part enhancing processing Active CN107336311B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108972770A (en) * 2018-08-07 2018-12-11 安徽嘉美工艺品有限公司 A kind of timber anticracking processing method
CN111844301A (en) * 2020-07-31 2020-10-30 成都天河农业旅游发展有限公司 Cracking-preventing reinforcing method for Chinese honeylocust wood

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007144680A (en) * 2005-11-25 2007-06-14 Dai Ichi Kogyo Seiyaku Co Ltd Penetrable coating for reinforcing woody material and reinforced woody material
CN101738060B (en) * 2009-12-10 2011-08-24 姜金法 Process for drying timber
CN102517575A (en) * 2012-01-06 2012-06-27 哈尔滨工业大学 Modification liquid and modification method for pure iron medical biomaterial
CN104526803A (en) * 2014-12-30 2015-04-22 广州好莱客创意家居股份有限公司 Surface-impregnated wood and preparing method thereof
CN103991116B (en) * 2014-04-22 2016-08-17 南京林业大学 The method that fast growing wood prepares reinforced wood sheet material by the composite modified process of multiple-effect
US20170267873A1 (en) * 2016-03-15 2017-09-21 National Institute of Forest Science Flame retardant composition for wood, flame retardant wood, and method for manufacturing the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007144680A (en) * 2005-11-25 2007-06-14 Dai Ichi Kogyo Seiyaku Co Ltd Penetrable coating for reinforcing woody material and reinforced woody material
CN101738060B (en) * 2009-12-10 2011-08-24 姜金法 Process for drying timber
CN102517575A (en) * 2012-01-06 2012-06-27 哈尔滨工业大学 Modification liquid and modification method for pure iron medical biomaterial
CN103991116B (en) * 2014-04-22 2016-08-17 南京林业大学 The method that fast growing wood prepares reinforced wood sheet material by the composite modified process of multiple-effect
CN104526803A (en) * 2014-12-30 2015-04-22 广州好莱客创意家居股份有限公司 Surface-impregnated wood and preparing method thereof
US20170267873A1 (en) * 2016-03-15 2017-09-21 National Institute of Forest Science Flame retardant composition for wood, flame retardant wood, and method for manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108972770A (en) * 2018-08-07 2018-12-11 安徽嘉美工艺品有限公司 A kind of timber anticracking processing method
CN111844301A (en) * 2020-07-31 2020-10-30 成都天河农业旅游发展有限公司 Cracking-preventing reinforcing method for Chinese honeylocust wood

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