CN108422514B - The method of modifying of anti-fishscale bamboo/timber - Google Patents
The method of modifying of anti-fishscale bamboo/timber Download PDFInfo
- Publication number
- CN108422514B CN108422514B CN201810255113.4A CN201810255113A CN108422514B CN 108422514 B CN108422514 B CN 108422514B CN 201810255113 A CN201810255113 A CN 201810255113A CN 108422514 B CN108422514 B CN 108422514B
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- CN
- China
- Prior art keywords
- bamboo
- timber
- glycidyl methacrylate
- density polyethylene
- vacuum impregnation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
-
- 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
Abstract
The present invention relates to a kind of method of modifying of anti-fishscale bamboo/timber, comprising the following steps: 1) preparation；2) vacuum impregnation glycidyl methacrylate；3) vacuum impregnation oxidized high-density polyethylene wax emulsion；4) dry, surface treatment.By carrying out glycidyl methacrylate pretreatment to bamboo/timber, the free hydroxyl group quantity in substrate is reduced, oxidized high-density polyethylene wax is re-introduced into and is attached on the cell wall of substrate, realizes the purpose of bamboo recombined material waterproof.Advantage: 1) esterification occurs for the free hydroxyl group in the epoxy group and bamboo wood in glycidyl methacrylate, reduces free hydroxyl group, while on glycidyl methacrylate graft to bamboo culm wall；2) ethyl alcohol volatilizees under high temperature action, immerses for next step and provides space；3) glycidyl methacrylate is copolymerized is combined together with oxidized high-density polyethylene, prevents the immersion channel of moisture, while reducing hydrophilic radical.
Description
Technical field
The present invention relates to a kind of method of modifying of anti-fishscale bamboo/timber, belong to bamboo and wood material processing technique field.
Background technique
In order to improve bamboo/Wood products dimensional stability, the performances such as mould proof corrosion resistant, chemical modification technique adds in timber
Work field is used widely, currently, the chemical modification method used in bamboo/wood working industry mainly includes at acetylation
Reason, furfural are modified and anhydride modified etc., and nearest paraffin is high temperature modified or paraffin wax emulsions dipping modification is also gradually used.Stone
Wax is high temperature modified mainly at high temperature to penetrate into paraffin particles thawing in bamboo wood or timber, and paraffin wax emulsions modification is direct
Paraffin particle is immersed in timber or bamboo wood by vacuum-impregnated method, cell wall or the filling of substrate are attached to by paraffin
The water imbibition for immersing and reducing the substrates such as timber or bamboo wood into prevention moisture in lumen, improves its dimensional stability.But by
A large amount of free hydroxyl groups in timber or bamboo wood still have, and with the growth of soaking time, moisture still can be penetrated into slowly
Water imbibition is led to problems such as to increase in substrate, substrate sizes deformation.It is, thus, sought for going out a kind of fundamentally solution timber or bamboo
The method of the biological materials waterproof such as material.
Summary of the invention
Proposed by the present invention is a kind of method of modifying of anti-fishscale bamboo/timber, and its object is to for bamboo/wood in the prior art
Moisture, which can slowly penetrate into substrate, when material is modified leads to problems such as water imbibition increase, substrate sizes deformation, provides a kind of prepare
The method of modifying of the bamboo recombined material product of good water-proof function.
A kind of technical solution of the invention: method of modifying of anti-fishscale bamboo/timber, comprising the following steps:
(1) preparation；
(2) vacuum impregnation glycidyl methacrylate；
(3) vacuum impregnation oxidized high-density polyethylene wax emulsion；
(4) dry, surface treatment.
Beneficial effects of the present invention:
1) glycidyl methacrylate pre-processes bamboo/timber, the ring in glycidyl methacrylate
Esterification occurs for the free hydroxyl group in oxygen groups and bamboo wood, reduces the free hydroxyl group quantity in substrate, while making methyl-prop
Olefin(e) acid ethylene oxidic ester is grafted on bamboo culm wall；
2) ethyl alcohol that vacuum immerses in substrate volatilizees under high temperature action, is the leaching of next step oxidized high-density polyethylene wax
Enter to provide place；
3) when bamboo/timber is eliminated in the leaching of water soluble oxidized high density polyethylene waxes, glycidyl methacrylate is copolymerized
It is combined together with oxidized high-density polyethylene, by the immersion channel for preventing moisture of oxidized high-density polyethylene, and
The esterification of free hydroxyl group reduces the group for absorbing moisture in glycidyl methacrylate and bamboo/timber, final to realize
Bamboo/waterproofing wood function.
Specific embodiment
A kind of method of modifying of anti-fishscale bamboo/timber, comprising the following steps:
(1) preparation；
(2) vacuum impregnation glycidyl methacrylate；
(3) vacuum impregnation oxidized high-density polyethylene wax emulsion；
(4) dry, surface treatment.
Step (1) preparation: bamboo/timber is put into drying box, is dried for 24 hours at 103 DEG C.
Step (2) the vacuum impregnation glycidyl methacrylate, comprises the technical steps that:
A, glycidyl methacrylate is dissolved in ethyl alcohol, mass ratio is 0.1~3%；It is methacrylic acid by quality
0.1~0.5% initiator of ethylene oxidic ester quality is added in ethyl alcohol, after uniform stirring, is ultrasonically treated 10~15 minutes, surpasses
Acoustical power is 800~1500W；
B, bamboo/timber after drying is put into 10~30 min of vacuum impregnation in prepared solution, vacuum pressure 30
~50 mbar；
C, the bamboo after dipping/timber is taken out, wipes out the solution of excess surface, with aluminium foil environmental sealing, is put into baking oven
In, elder generation handles 2h at 60 DEG C, then dries for 24 hours at 80 DEG C.
Step (3) the vacuum impregnation oxidized high-density polyethylene wax emulsion: in deionized water in mass ratio 0.1~2%
Oxidized high-density polyethylene wax emulsion is added, then 8~15 Min of uniform stirring is put the bamboo/timber handled well in step (2)
Enter, 45~60 min of vacuum impregnation, vacuum pressure is 60~80 mbar.
The step (4) is dry, is surface-treated: bamboo/timber after dipping in step (3) being put into baking oven, at 90 DEG C
It is lower be dried 18~for 24 hours, sand removes the oxidized high-density polyethylene wax of excess surface, obtains the bamboo/timber with water-proof function
Product.
Initiator described in step a is one of azo-bis-isobutyl cyanide, peroxidating two acyl or persulfate.
Embodiment 1
A kind of method of modifying of anti-fishscale bamboo/timber, comprising:
(1) bamboo recombined material that length is respectively 800mm, 60mm, 12mm is put into drying box at 103 DEG C dry
Processing is for 24 hours；
It (2) is in mass ratio 0.5% to dissolve in glycidyl methacrylate in ethyl alcohol, and press Glycidyl methacrylate
The 0.1% of glyceride mass ratio is added initiator (azodiisobutyronitrile) and is added in ethyl alcohol, after uniform stirring, is then sonicated 10
Minute；
(3) bamboo recombined material after drying is put into 15 min of vacuum impregnation in step (2) prepared solution, vacuum pressure
Power is 30 mbar；
(4) bamboo recombined material after dipping in step (3) is taken out, is wrapped up after wiping out the solution of excess surface with aluminium foil,
It is then placed in baking oven at 60 DEG C and handles 2h, then dried for 24 hours at 80 DEG C；
(5) in deionized water in mass ratio 0.2% be added oxidized high-density polyethylene wax emulsion, 10 Min of uniform stirring,
Then the bamboo recombined material handled in step (4) is put into and wherein impregnates 45 Min, vacuum pressure is 60 mbar；
(6) bamboo recombined material after dipping in step (5) is put into baking oven at 100 DEG C and is dried 18h, sand goes to surface
Extra oxidized high-density polyethylene wax obtains the bamboo recombined material product with water-proof function.
Table 1 is unmodified compared with the performance of modified bamboo recombined material
Embodiment 2
A kind of method of modifying of anti-fishscale bamboo/timber, comprising:
(1) bamboo sheet that length is respectively 300mm, 20mm, 12mm is put into drying box at 103 DEG C at drying
Reason is for 24 hours；
It (2) is in mass ratio 0.1% to dissolve in glycidyl methacrylate in ethyl alcohol, and press Glycidyl methacrylate
The 0.3% of glyceride mass ratio is added initiator (peroxidating two acyl) and is added in ethyl alcohol, after uniform stirring, is then sonicated 10 points
Clock；
(3) bamboo sheet after drying is put into 30 min of vacuum impregnation in step (2) prepared solution, vacuum pressure
For 40 mbar；
(4) bamboo sheet after dipping in step (3) is taken out, is wrapped up after wiping out the solution of excess surface with aluminium foil, so
After be put into baking oven at 60 DEG C and handle 2h, then at 80 DEG C it is dry for 24 hours；
(5) in deionized water in mass ratio 0.5% be added oxidized high-density polyethylene wax emulsion, 10 Min of uniform stirring,
Then the bamboo recombined material handled in step (4) is put into and wherein impregnates 60 Min, vacuum pressure is 60 mbar；
(6) bamboo sheet after dipping in step (5) is put into baking oven and is dried for 24 hours at 100 DEG C, sand goes to surface more
Remaining oxidized high-density polyethylene wax has the bamboo sheet product of water-proof function to get arriving.
Table 1 is unmodified compared with the performance of modified bamboo sheet
Embodiment 3
A kind of method of modifying of anti-fishscale bamboo/timber, comprising:
(1) the poplar square bar that length is respectively 600mm, 50mm, 20mm is put into drying box at 103 DEG C dry
Processing is for 24 hours；
It (2) is in mass ratio 3% to dissolve in glycidyl methacrylate in ethyl alcohol, and it is sweet by Glycidyl methacrylate
The 0.2% of grease mass ratio is added initiator (persulfate) and is added in ethyl alcohol, after uniform stirring, is then sonicated 10 minutes；
(3) the flitch material after drying is put into 10 min of vacuum impregnation in step (2) prepared solution, vacuum pressure
For 35 mbar；
(4) the flitch material after dipping in step (3) is taken out, is wrapped up after wiping out the solution of excess surface with aluminium foil, so
After be put into baking oven at 60 DEG C and handle 2h, then at 80 DEG C it is dry for 24 hours；
(5) in deionized water 2 % in mass ratio be added oxidized high-density polyethylene wax emulsion, 8 Min of uniform stirring, so
The flitch material handled in step (4) is put into afterwards and wherein impregnates 45 Min, vacuum pressure is 80 mbar；
(6) the flitch material after dipping in step (5) is put into baking oven and is dried for 24 hours at 100 DEG C, sand goes to surface more
Remaining oxidized high-density polyethylene wax has the flitch material product of water-proof function to get arriving.
Table 1 is unmodified compared with the performance of innovation wood square bar
Claims (1)
1. a kind of method of modifying of anti-fishscale bamboo/timber, it is characterized in that the following steps are included:
(1) preparation；
(2) vacuum impregnation glycidyl methacrylate；
(3) vacuum impregnation oxidized high-density polyethylene wax emulsion；
(4) dry, surface treatment；
Step (1) preparation: bamboo/timber is put into drying box, is dried for 24 hours at 103 DEG C；
Step (2) the vacuum impregnation glycidyl methacrylate, comprises the technical steps that:
A, glycidyl methacrylate is dissolved in ethyl alcohol, mass ratio is 0.1~3%；It is Glycidyl methacrylate by quality
0.1~0.5% initiator of glyceride quality is added in ethyl alcohol, after uniform stirring, is ultrasonically treated 10~15 minutes, ultrasonic function
Rate is 800~1500W；
B, bamboo/timber after drying is put into 10~30 min of vacuum impregnation in prepared solution, vacuum pressure is 30~50
mbar；
C, the bamboo after dipping/timber is taken out, wipes out the solution of excess surface, with aluminium foil environmental sealing, is put into baking oven, first
2h is handled at 60 DEG C, is then dried for 24 hours at 80 DEG C；
Step (3) the vacuum impregnation oxidized high-density polyethylene wax emulsion: it in mass ratio 0.1~2% is added in deionized water
Bamboo/the timber handled well in step (2) is then put by oxidized high-density polyethylene wax emulsion, 8~15 min of uniform stirring,
45~60 min of vacuum impregnation, vacuum pressure are 60~80 mbar；
The step (4) is dry, is surface-treated: bamboo/timber after dipping in step (3) being put into baking oven, is done at 90 DEG C
It is dry processing 18~for 24 hours, sand removes the oxidized high-density polyethylene wax of excess surface, obtains the bamboo/Wood products with water-proof function；
Initiator described in step a is one of azo-bis-isobutyl cyanide, peroxidating two acyl or persulfate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810255113.4A CN108422514B (en) | 2018-03-27 | 2018-03-27 | The method of modifying of anti-fishscale bamboo/timber |
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| CN201810255113.4A CN108422514B (en) | 2018-03-27 | 2018-03-27 | The method of modifying of anti-fishscale bamboo/timber |
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| CN108422514B true CN108422514B (en) | 2019-08-06 |
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| CN109015982B (en) * | 2018-08-29 | 2020-07-10 | 南京林业大学 | Preparation method for constructing super-hydrophobic layer on surface of bamboo/wood by utilizing geothermal water |
| CN110039627B (en) * | 2019-05-06 | 2021-04-02 | 北京林业大学 | Preparation method of vegetable oil/wax composite emulsion wood waterproofing agent |
| CN110787955A (en) * | 2019-09-17 | 2020-02-14 | 陈秉鸿 | Vacuum infusion process for solid wood |
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| CN101954663B (en) * | 2010-09-15 | 2012-05-23 | 东北林业大学 | Method for preparing environmentally-friendly plastic wood |
| CN102001117A (en) * | 2010-10-21 | 2011-04-06 | 东北林业大学 | Method for preparing hydrophobic wood |
| CN105522629A (en) * | 2015-12-01 | 2016-04-27 | 安徽雪峰木业有限公司 | Wood softening agent capable of giving fire retardant and fireproof performances to wood and preparation method thereof |
| CN105690516B (en) * | 2016-02-03 | 2017-07-28 | 北京林业大学 | A kind of hydrophobic timber of entirety and preparation method thereof |
| CN107030822A (en) * | 2017-06-12 | 2017-08-11 | 广西大学 | The modifying agent and method of modifying of a kind of multi-functional timber |
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Application publication date: 20180821 Assignee: Guidong Zhongyi Bamboo and Wood Development Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020320000109 Denomination of invention: Modification methods of waterproof bamboo / wood Granted publication date: 20190806 License type: Common License Record date: 20201102 Application publication date: 20180821 Assignee: Siyang Tongyuan Wood Industry Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020320000107 Denomination of invention: Modification methods of waterproof bamboo / wood Granted publication date: 20190806 License type: Common License Record date: 20201030 |
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