CN107160510B - Solid wood ground heating floor timber microwave-dipping modification process - Google Patents
Solid wood ground heating floor timber microwave-dipping modification process Download PDFInfo
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- CN107160510B CN107160510B CN201710538326.3A CN201710538326A CN107160510B CN 107160510 B CN107160510 B CN 107160510B CN 201710538326 A CN201710538326 A CN 201710538326A CN 107160510 B CN107160510 B CN 107160510B
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- timber
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- ground heating
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Classifications
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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
-
- 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
- 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
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/04—Combined bleaching or impregnating and drying of wood
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a kind of solid wood ground heating floor timber microwave-dipping modification process, including a, microwave: timber is put into microwave processing equipment and carries out microwave, microwave processing process point 3 times；B, it cooling: cools down；C, single-steeping: timber pickling is analyzed among pure water solution, 50-70 DEG C of dipping temperature in the cetomacrogol 1000 that mass fraction is 20-30%, takes out drying after impregnating 25-35h, drying to moisture content reaches 8%；D, double-steeping: dried timber being placed in vacuum impregnation tank, while being infused resin into tank body using negative pressure, makes timber pickling in resin, controls pressure 1-3MPa, keeps 1-4h；E, finished product: it is dry, obtain final material.
Description
Technical field
The present invention relates to a kind of modification of ground heating solid wooden floor board timber, in particular to a kind of solid wood floor heating
Plate timber microwave-dipping modification process, is related to timber floor and furniture manufacturing field.
Background technique
In recent years, with the promotion of people's level of consumption, people increasingly pay close attention to the home life experience of high quality,
Especially requirement of the people for environmental requirement and living environment comfort level improves, and solid wood ground heating floor industry also shows back
Warm trend, Wood demand are also increasing.Due to the conventional drying of wood, modified there are the time is long, energy consumption is high and pollution
The problems such as serious, in addition, some common solid wood materials are due to the wet natural attribute to rise of its drying shrinkage, so that it can not be applied to ground
Heating environment, dimensional stability is unable to reach requirement, thus is unable to satisfy consumer demand, and therefore, people start to seek
It asks and studies new Wood Property Improvement.Microwave vacuum drying technology originates from the 1930s, and due to its fuel factor
It was found that and become the hot spot probed into of the whole world, then in 60~seventies, many countries start this technical application and timber
It is dry, but since the problem of all various aspects such as drying cost, drying equipment, drying process, dry mass does not solve, Shi Zhijin
Day, the industrial applications of timber microwave drying still do not make substantial progress, and the quantity of microwave drying timber is dry in timber
Shared ratio almost can be ignored in dry.After the 1990s, domestic and foreign scholars start sight from microwave
Dry field, which is gone to, carries out modification early period to timber using microwave, as a result, it has been found that the timber various aspects crossed by microwave modification
Drying property all greatly promotes, thus microwave modification just starts to develop.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of solid wood ground heating floor timber microwave-dipping it is modified at
Science and engineering skill.The present invention can effectively improve permeability, to improve the dipping drugloading rate of floor of wood；The present invention can also be shown simultaneously
Write the dimensional stability for improving timber, the scope of application of further expansion timber.
In order to solve the above technical problems, technical scheme is as follows: a kind of solid wood ground heating floor timber microwave-leaching
Stain modification process, specifically includes the following steps:
A, microwave: timber being put into microwave processing equipment and carries out microwave, microwave processing process point 3 times, when per treatment
Between be spaced 1-3min；Radiant power is adjusted for the first time to 2-5KW, radiated time 30-60s；Radiant power is adjusted for the second time to 1-
4KW, radiated time 20-40s；Third time adjusts radiant power to 0.2-0.8KW, radiated time 8-15s；
B, cooling: cooling down, and is down to 25-40 DEG C to temperature and goes out tank
C, single-steeping: by timber pickling in mass fraction be 20-30% cetomacrogol 1000 analyze pure water solution it
In, 50-70 DEG C of dipping temperature, drying is taken out after impregnating 25-35h, drying to moisture content reaches 8%；
D, double-steeping: dried timber is placed in vacuum impregnation tank, is adjusted vacuum degree to -0.10MPa, is kept
10-20min, while being infused resin into tank body using negative pressure, make timber pickling in resin, control pressure 1-3MPa, keeps
1-4h；
E, finished product: it is dry, obtain final material.
Above-mentioned solid wood ground heating floor in timber microwave-dipping modification process, specifically includes the following steps:
A, microwave: timber being put into microwave processing equipment and carries out microwave, microwave processing process point 3 times, when per treatment
Between be spaced 2min；Radiant power is adjusted for the first time to 4KW, radiated time 40s；Second adjusts radiant power to 2KW, when radiation
Between 25s；Third time adjusts radiant power to 0.5KW, radiated time 10s；
B, cooling: cooling down, and is down to 35 DEG C to temperature and goes out tank
C, single-steeping: timber pickling is analyzed among pure water solution in the cetomacrogol 1000 that mass fraction is 25%,
60 DEG C of dipping temperature, drying is taken out after impregnating 30h, drying to moisture content reaches 8%；
D, double-steeping: dried timber is placed in vacuum impregnation tank, is adjusted vacuum degree to -0.10MPa, is kept
15min, while being infused resin into tank body using negative pressure, make timber pickling in resin, control pressure 1.5MPa, keeps 2h；
E, finished product: it is dry, obtain final material.
Solid wood ground heating floor above-mentioned is in timber microwave-dipping modification process, in step a, when microwave treatment
Vacuum degree is maintained at -0.05~(- 0.1) MPa.
Solid wood ground heating floor above-mentioned is in timber microwave-dipping modification process, in step a, when microwave treatment
Vacuum degree is maintained at -0.07MPa.
Solid wood ground heating floor above-mentioned is in timber microwave-dipping modification process, in step a, at first time microwave
Reason makes the moisture loss rate of timber be maintained at 4%/min；Second of microwave treatment is maintained at the moisture loss rate of timber
1.5%/min；First time microwave treatment makes the moisture loss rate of timber be maintained at 0.3%/min.
Solid wood ground heating floor above-mentioned is in timber microwave-dipping modification process, wooden when tank out in step b
Material moisture content reaches 10%.
Solid wood ground heating floor above-mentioned is in timber microwave-dipping modification process, in step d, in vacuum impregnation tank
Control for Oxygen Content is 0.
For solid wood ground heating floor above-mentioned in timber microwave-dipping modification process, the timber is U.S. south
Pine material or Radiata pine wood.
Compared with prior art, the present invention has the following beneficial effects:
(1) permeability improves: the present invention uses unique microwave treatment technology, and heat is not incoming outside timber, and
It is directly to be occurred in inside by the hydrone interaction in microwave alternating electric field and timber.Therefore, heat generates tool
There is instantaneity.When compared with high-moisture percentage timber, under high-intensity microwave snap, the water vapour pressure in timber is sharply increased, from
And lead to the perforation of the tissues such as pit, the conduit of parenchyma cell in timber, form new fluid channel so that the radial direction of timber and
Longitudinal permeability is able to thousand times of raising.By the Southern Pine timber of 3 microwave modifications, compared to its water suction of untreated timber
20-40% can be improved in rate of body weight gain, illustrate that its permeability significantly improves, and impregnation, preservative treatment, flame retardant treatment are carried out to it
The drugloading rate of preservative, fire retardant, resin etc. improves 4 times or so.
(2) by microwave radiation processing, bending elastic modulus and impact toughness decreased are but less than 8% (at general microwave
Science and engineering skill reduces by 18% or so), because its permeability significantly improves, it can be improved rapidly by the methods of low-molecular-weight resin dipping
Intensity and make up its small loss of strength.
(3) it is dried again after microwave radiation modification, rate of drying is obviously improved.Conventional drying needs 12
It, the Southern Pine drying of wood that microwave treatment is crossed to the moisture content needed only needs 2-3 days, and drying efficiency improves drying efficiency and mentions
It is 4-6 times high.
(4) improve Southern Pine wood dimensional stability: in microwave processing process, wood internal can generate physical chemistry and answer
Power relaxation, so that the residual growth stress in timber is able to big degree release, dimensional stability improves 3-5 times.
(5) it is more suitable for manufacturing advanced composite material (ACM):, can be with after carrying out radiation modification processing to Southern Pine with high-intensity microwave
Develop the compound functional material of Novel wooden base.Such as fire proofing, heat-insulating material, acoustic material, the same section of such material answers
For solid wooden floor board field.
(6) pass through resin impregnation, the wet rate of the resistance of timber and swollen rate is resisted to improve 70% or more, the surface hardness of timber
More untreated material improves 2 times or more, and treated, and MOR, MOE are greatly improved, and compensate for loss of strength after microwave treatment, resistance to compression
Intensity improves 55%.
Specific embodiment
Embodiment 1: the test of WBZ Intelligentized static microwave vacuum drying, the technology ginseng of equipment can be used in microwave processing equipment
Number:
Rated power 8KW；
Output power 6KW (adjustable)；
2450 ± 50MHZ of microwave frequency；
Maximum vacuum :≤- 0.08MPa；
Equipment size: 800 × 1500 × 1750mm；
Microwave from leakage value < 1mw/cm2 (national standard < 5mw/cm2)；
Supply voltage: three-phase, 380V ± 5%, 50HZ；
With vacuum system, device Host is 304 stainless steels；
Separately there is vacuum impregnation tank (impregnating for resin).
Microwave modification technology process:
(1) selection: U.S.'s Southern Pine, specification 1000mm × 135mm × 30mm, first moisture content 50-55%.
(2) solid wood ground heating floor timber microwave-dipping modification process of U.S.'s Southern Pine is used:
1, Southern Pine plate is put into microwave processing equipment, starting device, adjusts vacuum degree -0.07MPa；
2, microwave modification treatment process is divided into 3 processing, and first time radiated time 40s adjusts radiant power to 4KW, water
Dispersing stall rate is about 4%/min；Second of radiated time 25s adjusts radiant power to 2KW, and moisture loss rate is about
1.5%/min；Third time radiated time 10s adjusts radiant power to 0.5KW, and moisture loss rate is about 0.3%/min；Often
Secondary processing time interval 2min；
3, the cooling down stage: opening cooling system and cool down, and is down to 35 DEG C to temperature and goes out tank (timber at this time
Moisture content reaches 10% or so)；
4, cetomacrogol 1000 (analysis is pure) is configured to the aqueous solution that mass fraction is 25%, by timber pickling Yu Juyi
Glycol 1000 is analyzed among pure water solution, is adjusted dipping temperature and is reached 60 DEG C, is impregnated and is taken out drying after 30h, and 60 DEG C of drying temperature,
Time 1.5-2 days, whole moisture content reached 8%；
5, dried timber is placed in vacuum impregnation tank, adjusts vacuum degree to -0.10MPa, keeps 15min, simultaneously
It is infused resin into tank body using negative pressure, control ambient oxygen content is 0 (can be filled with nitrogen), controls pressure 1.5MPa, keeps 2h；
6, the timber after dipping is carried out respectively: 2 days -30 DEG C of natural drying, 60 DEG C of 30h -, 90 DEG C of 15h-of 30h -
It 105 DEG C, 6h, takes out, obtains final material.
Embodiment 2: solid wood ground heating floor timber microwave-dipping modification process, specifically includes the following steps:
A, microwave: timber being put into microwave processing equipment and carries out microwave, microwave processing process point 3 times, when per treatment
Between be spaced 3min；Radiant power is adjusted for the first time to 2KW, radiated time 50s；Second of adjusting radiant power is radiated to 3.5KW
Time 20s；Third time adjusts radiant power to 0.6KW, radiated time 10s；
B, cooling: cooling down, and is down to 25 DEG C to temperature and goes out tank, moisture content reaches 10% when tank out；
C, single-steeping: timber pickling is analyzed among pure water solution in the cetomacrogol 1000 that mass fraction is 30%,
50 DEG C of dipping temperature, drying is taken out after impregnating 35h, drying to moisture content reaches 8%；
D, double-steeping: dried timber is placed in vacuum impregnation tank, is adjusted vacuum degree to -0.10MPa, is kept
20min, while being infused resin into tank body using negative pressure, make timber pickling in resin, control pressure 1MPa, keeps 4h；
E, finished product: it is dry, obtain final material.
Claims (4)
1. solid wood ground heating floor timber microwave-dipping modification process, it is characterised in that: specifically includes the following steps:
A, Microwave Pretreatment: timber being put into microwave processing equipment and carries out Microwave Pretreatment, when pretreatment vacuum degree be maintained at-
0.07Mpa, microwave processing process point 3 times, time interval 1-3min per treatment；Radiant power is adjusted for the first time to 2-5KW, spoke
Penetrate time 30-60s；Radiant power is adjusted for the second time to 1-4KW, radiated time 20-40s；Third time adjust radiant power to
0.2-0.8KW, radiated time 8-15s；
B, cooling down: cooling down, and is down to 25-40 DEG C to temperature and goes out tank；
C, single-steeping: timber pickling is analyzed among pure water solution in the cetomacrogol 1000 that mass fraction is 20-30%, leaching
50-70 DEG C of stain temperature takes out drying after impregnating 25-35h, and drying to moisture content reaches 8%；
D, double-steeping: dried timber is placed in vacuum impregnation tank, and Control for Oxygen Content is adjusted 0 in vacuum impregnation tank
Vacuum degree keeps 10-20min to -0.10MPa, while being infused resin into tank body using negative pressure, makes timber pickling in resin
In, pressure 1-3MPa is controlled, 1-4h is kept；
E, finished product: it is dry, obtain final material.
2. solid wood ground heating floor according to claim 1 timber microwave-dipping modification process, it is characterised in that:
In step a, first time microwave treatment makes the moisture loss rate of timber be maintained at 4%/min；Second of microwave treatment makes timber
Moisture loss rate be maintained at 1.5%/min；First time microwave treatment make the moisture loss rate of timber be maintained at 0.3%/
min。
3. solid wood ground heating floor according to claim 1 timber microwave-dipping modification process, it is characterised in that:
In step b, moisture content reaches 10% when tank out.
4. solid wood ground heating floor according to claim 1 timber microwave-dipping modification process, it is characterised in that:
The timber is U.S.'s southern pine or Radiata pine wood.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710538326.3A CN107160510B (en) | 2017-07-04 | 2017-07-04 | Solid wood ground heating floor timber microwave-dipping modification process |
| PCT/CN2017/098755 WO2019006836A1 (en) | 2017-07-04 | 2017-08-24 | Microwave-impregnating modified treatment process for wood for ground heating solid-wood flooring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710538326.3A CN107160510B (en) | 2017-07-04 | 2017-07-04 | Solid wood ground heating floor timber microwave-dipping modification process |
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| Publication Number | Publication Date |
|---|---|
| CN107160510A CN107160510A (en) | 2017-09-15 |
| CN107160510B true CN107160510B (en) | 2019-03-19 |
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| CN201710538326.3A Active CN107160510B (en) | 2017-07-04 | 2017-07-04 | Solid wood ground heating floor timber microwave-dipping modification process |
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| WO (1) | WO2019006836A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107856160A (en) * | 2017-11-13 | 2018-03-30 | 久盛地板有限公司 | The modified fast growing wood ground heating solid wooden floor board processing technology of dipping |
| CN108162096A (en) * | 2017-12-07 | 2018-06-15 | 常州市日臣艺术装饰材料有限公司 | A kind of preparation method of multi-layer solid wood composite ground heating floor |
| CN113211587B (en) * | 2021-05-25 | 2022-03-18 | 久盛地板有限公司 | Production method of surface layer compression reinforced ultra-stable solid wood floor heating floor board |
| CN114571563A (en) * | 2022-03-17 | 2022-06-03 | 亚振家居股份有限公司 | Process for improving wood strength by microwave pretreatment |
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|---|---|---|---|---|
| RU2034697C1 (en) * | 1992-11-04 | 1995-05-10 | Индивидуальное частное научно-внедренческое предприятие Фирма "Резонанс" | Wood working method |
| WO1999064213A1 (en) * | 1998-06-09 | 1999-12-16 | The University Of Melbourne | A method for increasing the permeability of wood |
| CN105563579A (en) * | 2015-12-23 | 2016-05-11 | 中国林业科学研究院木材工业研究所 | High-permeability resin type timber enhancing modifier and efficient immersion treatment control method |
| CN105965638A (en) * | 2016-07-11 | 2016-09-28 | 中国林业科学研究院林业新技术研究所 | Microwave treatment reconstructed material and preparing methods thereof |
| CN106625930A (en) * | 2016-12-28 | 2017-05-10 | 中南林业科技大学 | Phase-change energy storage heat-insulation solid wood and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104858950A (en) * | 2014-12-25 | 2015-08-26 | 王玉燕 | Nano silicon dioxide modified wood production method |
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2017
- 2017-07-04 CN CN201710538326.3A patent/CN107160510B/en active Active
- 2017-08-24 WO PCT/CN2017/098755 patent/WO2019006836A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2034697C1 (en) * | 1992-11-04 | 1995-05-10 | Индивидуальное частное научно-внедренческое предприятие Фирма "Резонанс" | Wood working method |
| WO1999064213A1 (en) * | 1998-06-09 | 1999-12-16 | The University Of Melbourne | A method for increasing the permeability of wood |
| CN105563579A (en) * | 2015-12-23 | 2016-05-11 | 中国林业科学研究院木材工业研究所 | High-permeability resin type timber enhancing modifier and efficient immersion treatment control method |
| CN105965638A (en) * | 2016-07-11 | 2016-09-28 | 中国林业科学研究院林业新技术研究所 | Microwave treatment reconstructed material and preparing methods thereof |
| CN106625930A (en) * | 2016-12-28 | 2017-05-10 | 中南林业科技大学 | Phase-change energy storage heat-insulation solid wood and manufacturing method thereof |
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| CN107160510A (en) | 2017-09-15 |
| WO2019006836A1 (en) | 2019-01-10 |
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Denomination of invention: Microwave impregnation modification of wood for solid wood floor heating Effective date of registration: 20211216 Granted publication date: 20190319 Pledgee: Zhejiang Nanxun Rural Commercial Bank Co.,Ltd. Hengjie sub branch Pledgor: JIUSHENG WOOD Co.,Ltd. Registration number: Y2021330002541 |
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