CN102085679A - Wood modifying solution as well as preparation method and application thereof - Google Patents
Wood modifying solution as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a wood modifying solution and a preparation method thereof. The wood modifying solution comprises low molecular weight phenolic resin, auxiliaries and water. The low molecular weight phenolic resin comprises the following components: 50-300 parts of phenol, 100-400 parts of 37% formaldehyde, 0-50 parts of urea and 5-20 parts of sodium hydroxide. The wood modifying solution in the invention is applicable to modification of various woods and wood veneers, after applying the wood modifying solution in the invention to modify wood, the mechanical properties of the wood can be obviously improved, the natural defects of easy cracking and easy deformation of the wood are overcome, the processability, caking property and the like of the wood after being modified are not influenced, and the modified wood is environmentally friendly and has the antiflaming, antiseptic and mothproof functions.
Description
Technical field
The present invention relates to a kind of Wooden modifying liquid and preparation method thereof, the invention still further relates to this application of Wooden modifying liquid in Wooden modifying, belong to wood chemistry modification field.
Background technology
China is the consumption big country of timber and woodwork in the world, is again one of minimum country of the per capita forest reserves in the whole world.Along with the development of national economy fast and stable, the raising of living standards of the people, the further increase of China's lumber consumption, the contradiction of supply and demand is further aggravated.The wood grows of artificial forest is rapid, can alleviate the contradiction of China's timber supply and demand.But the timber of artificial forest exists, and material is loose, distortion easy to crack and rotten characteristics of corrosion resistant not, and range of application is restricted, and can not be used for woodworks such as top-grade furniture, can only be used for requirement lower wood-based plate manufacturing and paper industry at present.Wooden modifying be keep timber native texture color and luster, the high ratio of strength to weight, be easy to process, under the prerequisite of intrinsic advantage such as sound-absorption and heat-insulation, by timber is carried out series of physical, chemical treatment, improve and overcome wood shrinkage bulking, poor dimensional stability, not corrosion resistant, inherent shortcoming such as inflammable, not wear-resisting and easy to change, give the general name of a class processing method of some specific function of timber simultaneously.Wooden modifying is an effective way of improving artificial forest wood and low-grade timber natural defect, and the density of wood after the processing, case hardness, wearability and dimensional stability etc. all increase substantially, and can be widely used in floor, building and ornament materials and furniture industry.
Use timber effectively, prolong the service life of timber, the superior application of low-grade timber is built a resource-conserving society and environmental protection has its own strategic significance to China.Along with people are more and more higher more and more comprehensive to the requirement of lumber quality, polyfunctional Wooden modifying technology also is the main direction of Wooden modifying development, is not only the raising of wood property, also should make timber possess antiseptic property and performance such as fire-retardant simultaneously.Environmental protection also is the present problem that must pay close attention to of any commodity of exploitation institute, and therefore, innovation wood influence to human body and environment in the process of producing and using will be the principal element that restricts its development.
At present, the modification liquid kind of Wooden modifying methods a lot, modification also have a lot.Modification liquid type comprises ethylenic unsaturation hydro carbons monomer, performed polymer, pollopas, phenolic resins, furfuryl alcohol resin, resorcinol resin, acetylating agent etc.But these modification liquid exist mostly, and modification is single, contaminated environment, complex procedures, cause the shortcomings such as loss of medicament after the modification.Therefore, research and develop and a kind ofly can improve wood performance, can use timber effectively again, prolong the service life of timber, low-grade timber is become the Wooden modifying liquid of superior application, will have important practical significance.
Summary of the invention
One of the object of the invention provides a kind of Wooden modifying liquid, after using this Wooden modifying liquid to Wooden modifying, the timber mechanics performance is significantly improved, solve natural defectives such as timber is easy to crack, distortion, do not influence the processability of timber own, caking property etc. after the modification, and timber is environmentally friendly after the modification, can also give fire-retarding of wood, function such as anticorrosion, mothproof.
Two of the object of the invention provides a kind of method for preparing above-mentioned Wooden modifying liquid;
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of Wooden modifying liquid comprises: pf resin of low molecular weight, auxiliary agent and water;
In order to reach better effect, preferred, the weight portion of each component is: pf resin of low molecular weight 60-140 part, auxiliary agent 0-90 part, water 0-600 part;
Preferred, the weight portion of each component is: pf resin of low molecular weight 80-120 part, auxiliary agent 20-40 part, water 30-130 part;
Particularly preferred, the weight portion of each component is: 100 parts of pf resin of low molecular weight, 30 parts of auxiliary agents, 65 parts in water.
Wherein, described pf resin of low molecular weight comprises following component: 50～300 parts of phenol, 100～400 parts in 37% (g/g) formaldehyde, 0～50 part in urea, 5～20 parts in 40% (g/g) NaOH;
Preferably, the weight portion of each component is: 100～200 parts of phenol, 200～400 parts in 37% formaldehyde, 30～50 parts in urea, 10～20 parts in 40% NaOH;
Its preparation method comprises:
(1) formalin that will account for gross weight 4/5-3/4 is mixed with phenol and is reacted, and obtains product 1;
(2) the NaOH solution that will account for gross weight 3/10-7/20 joins that the heating reactant liquor reacts in the product 1, obtains product 2;
(3) remaining NaOH solution is joined in the product 2, then add remaining formalin, proceed reaction, obtain product 3;
(4) in product 3, add urea and react, allow product lower the temperature gradually, promptly.
In order to reach better effect, preferred in the step (1), 37% formaldehyde that accounts for gross weight 4/5-3/4 is mixed intensification afterwards with phenol reacting liquid temperature to 40 ℃ is reacted, obtain product 1;
Preferably, being heated to be described in the step (2) is heated to 50 ℃ with reacting liquid temperature; Wherein, reaction temperature is controlled at 85～88 ℃; Reaction time is preferably 50～70min; Enable uniform reaction, avoid the degree of polymerization bigger, and cause the product molecular weight excessive.
Preferably, in the step (3),, remaining NaOH solution is joined in the product 2 when the temperature of product 2 drops to below 75 ℃; Wherein, the reaction temperature described in the step (3) is preferably 80～82 ℃, and the reaction time is preferably 150～200min;
Preferably, when product 3 cools to 65 ℃, in product 3, add urea and react in the step (4); The wherein said reaction time is preferably 10～30min, makes the product temperature drop to 40 ℃ promptly more gradually.
Described auxiliary agent can be selected according to different Wooden modifying demands, for example can be any one or more than one mixture formed by any part by weight in fire retardant, anticorrisive agent or the waterproofing agent.These fire retardants, anticorrisive agent or waterproofing agent all are fire retardant, anticorrisive agent or the waterproofing agents that arrives commonly used in the Wooden modifying, can buy from commercial channels to obtain.
Wherein, the consumption of water can carry out the dilution of variable concentrations according to the density and the saturating machine of timber, and this all is those skilled in the art's technology known.
The application of Wooden modifying liquid of the present invention in Wooden modifying comprises: the timber that adopts the mode of vacuum pressed to treat modification with Wooden modifying liquid of the present invention floods the modification processing, drying, promptly; As a reference, the condition of described vacuum pressed is: vacuum 0.08MPa, vacuum time 30min, pressurization working pressure 1.0MPa, pressing time 2h.
It is crosslinked that Wooden modifying liquid of the present invention makes phenolic resins form in timber inside, thereby form filling and bonding in the timber interior polymeric, and partly the hydroxyl reaction with the wood cell wall composition forms chemical crosslinking.Because the filling of the high molecular polymer that forms and crosslinked effect, make employed auxiliary agent can be good at being retained in timber inside, thereby the realization Wood Dimensional Stability, mechanical property all increases significantly, and gives fire-retarding of wood, characteristic such as anticorrosion, mothproof simultaneously.
Wooden modifying liquid of the present invention can and not solidify the back at dipping and form residual at wood surface, guaranteed the cleaning of wood surface, treated wood color deepens, the trend that approaches high-grade material wood color is arranged, make people more acceptant, gloss does not change basically, in the entire process process, modification liquid reusable edible, technology is simple, does not need complex apparatus.Wooden modifying liquid of the present invention, characteristics such as have that easy to operate, technology is simple, environmental friendliness, retention rate height, performance improvement are obvious.
The specific embodiment
Further describe the present invention below in conjunction with specific embodiment, advantage of the present invention and characteristics will be more clear along with description.But these embodiment only are exemplary, scope of the present invention are not constituted any restriction.It will be understood by those skilled in the art that and down can make amendment or replace without departing from the spirit and scope of the present invention, but these modifications and replacing all fall within the scope of protection of the present invention the details of technical solution of the present invention and form.
The preparation of embodiment 1 Wooden modifying liquid 1
One, pf resin of low molecular weight is synthetic
(by weight): at first add first batch of material, 160 parts of 100 parts of phenol and formalins (mass percent is 37% formalin), heating up makes reacting liquid temperature to 40 ℃; Afterwards, add 3 parts of first NaOH solution (mass percent is 40% the NaOH aqueous solution), continue heating, stop heating when reacting liquid temperature reaches 50 ℃, reaction temperature is strict controlled in 85 ℃; Behind the reaction 50min, reduce the temperature to below 75 ℃, add 7 parts of second batch of NaOH solution, after adding, add 40 parts of second batch of formalins again, maintain the temperature at 80 ℃ of reaction 150min; Cool to 65 ℃ and add 30 parts in urea, reaction 10min makes temperature drop to 40 ℃ of son amount phenolic resins that promptly make low score again gradually.
Two, get 30 parts of 100 parts of pf resin of low molecular weight, fire retardants, 65 parts in water after synthetic, mix, promptly.
The preparation of embodiment 2 Wooden modifying liquid 2
One, pf resin of low molecular weight is synthetic
(by weight): at first add first batch of material, 160 parts of 100 parts of phenol and formalins (mass percent is 37% formalin), heating up makes reacting liquid temperature to 40 ℃; Afterwards, add 5 parts of first NaOH solution (mass percent is 40% the NaOH aqueous solution), continue heating, stop heating when reacting liquid temperature reaches 50 ℃, reaction temperature is strict controlled in 85 ℃; Behind the reaction 50min, reduce the temperature to below 75 ℃, add 10 parts of second batch of NaOH solution, after adding, add 40 parts of second batch of formalins again, maintain the temperature at 80 ℃ of reaction 150min; Cool to 65 ℃ and add 30 parts in urea, reaction 10min makes temperature drop to 40 ℃ of son amount phenolic resins that promptly make low score again gradually.
Two, get 10 parts of 20 parts of 100 parts of pf resin of low molecular weight, fire retardants, anticorrisive agents, 65 parts in water after synthetic, mix, promptly.
The preparation of embodiment 3 Wooden modifying liquid 3
One, pf resin of low molecular weight is synthetic
(by weight): at first add first batch of material, 160 parts of 100 parts of phenol and formalins (mass percent is 37% formalin), heating up makes reacting liquid temperature to 40 ℃; Afterwards, add 5 parts of first NaOH solution (mass percent is 40% the NaOH aqueous solution), continue heating, stop heating when reacting liquid temperature reaches 50 ℃, reaction temperature is strict controlled in 85 ℃; Behind the reaction 50min, reduce the temperature to below 75 ℃, add 10 parts of second batch of NaOH solution, after adding, add 40 parts of second batch of formalins again, maintain the temperature at 80 ℃ of reaction 150min; Cool to 65 ℃ and add 30 parts in urea, reaction 10min makes temperature drop to 40 ℃ of son amount phenolic resins that promptly make low score again gradually.
Two, get 10 parts of 20 parts of 100 parts of pf resin of low molecular weight, fire retardants, waterproofing agents, 65 parts in water after synthetic, mix, promptly.
The preparation of embodiment 4 Wooden modifying liquid 4
One, pf resin of low molecular weight is synthetic
(by weight): at first add first batch of material, 160 parts of 100 parts of phenol and formalins (mass percent is 37% formalin), heating up makes reacting liquid temperature to 40 ℃; Afterwards, add 5 parts of first NaOH solution (mass percent is 40% the NaOH aqueous solution), continue heating, stop heating when reacting liquid temperature reaches 50 ℃, reaction temperature is strict controlled in 85 ℃; Behind the reaction 50min, reduce the temperature to below 75 ℃, add 10 parts of second batch of NaOH solution, after adding, add 40 parts of second batch of formalins again, maintain the temperature at 80 ℃ of reaction 150min; Cool to 65 ℃ and add 30 parts in urea, reaction 10min makes temperature drop to 40 ℃ of son amount phenolic resins that promptly make low score again gradually.
Two, get 10 parts of 10 parts of 10 parts of 100 parts of pf resin of low molecular weight, fire retardants, anticorrisive agents, waterproofing agents, 65 parts in water after synthetic, mix, promptly.
The preparation of embodiment 5 Wooden modifying liquid 5
One, pf resin of low molecular weight is synthetic
(by weight): at first add first batch of material, 160 parts of 100 parts of phenol and formalins (mass percent is 37% formalin), heating up makes reacting liquid temperature to 40 ℃; Afterwards, add 5 parts of first NaOH solution (mass percent is 40% the NaOH aqueous solution), continue heating, stop heating when reacting liquid temperature reaches 50 ℃, reaction temperature is strict controlled in 85 ℃; Behind the reaction 70min, reduce the temperature to below 75 ℃, add 10 parts of second batch of NaOH solution, after adding, add 40 parts of second batch of formalins again, maintain the temperature at 80 ℃ of reaction 200min; Cool to 65 ℃ and add 30 parts in urea, reaction 20min makes temperature drop to 40 ℃ of son amount phenolic resins that promptly make low score again gradually.
Two, get 30 parts of 100 parts of pf resin of low molecular weight, waterproofing agents, 65 parts in water after synthetic, mix, promptly.
The preparation of embodiment 6 Wooden modifying liquid 6
One, pf resin of low molecular weight is synthetic
(by weight): at first add first batch of material, 160 parts of 100 parts of phenol and formalins (mass percent is 37% formalin), heating up makes reacting liquid temperature to 40 ℃; Afterwards, add 3 parts of first NaOH solution (mass percent is 40% the NaOH aqueous solution), continue heating, stop heating when reacting liquid temperature reaches 50 ℃, reaction temperature is strict controlled in 85 ℃; Behind the reaction 50min, reduce the temperature to below 75 ℃, add 7 parts of second batch of NaOH solution, after adding, add 40 parts of second batch of formalins again, maintain the temperature at 80 ℃ of reaction 150min; Cool to 65 ℃ and add 30 parts in urea, reaction 10min makes temperature drop to 40 ℃ of son amount phenolic resins that promptly make low score again gradually.
Two, get 30 parts of 100 parts of pf resin of low molecular weight, anticorrisive agents, 65 parts in water after synthetic, mix, promptly.
The preparation of embodiment 7 Wooden modifying liquid 7
One, pf resin of low molecular weight is synthetic
(by weight): at first add first batch of material, 300 parts of 200 parts of phenol and formalins (mass percent is 37% formalin), heating up makes reacting liquid temperature to 40 ℃; Afterwards, add 7 parts of first NaOH solution (mass percent is 40% the NaOH aqueous solution), continue heating, stop heating when reacting liquid temperature reaches 50 ℃, reaction temperature is strict controlled in 88 ℃; Behind the reaction 50min, reduce the temperature to below 75 ℃, add 13 parts of second batch of NaOH solution, after adding, add 40 parts of second batch of formalins again, maintain the temperature at 80 ℃ of reaction 150min; Cool to 65 ℃ and add 50 parts in urea, reaction 10min makes temperature drop to 40 ℃ of son amount phenolic resins that promptly make low score again gradually.
Two, get 30 parts of 100 parts of pf resin of low molecular weight, fire retardants, 65 parts in water after synthetic, mix.
The preparation of embodiment 8 Wooden modifying liquid 8
One, pf resin of low molecular weight is synthetic
(by weight): at first add first batch of material, 300 parts of 200 parts of phenol and formalins (mass percent is 37% formalin), heating up makes reacting liquid temperature to 40 ℃; Afterwards, add 7 parts of first NaOH solution (mass percent is 40% the NaOH aqueous solution), continue heating, stop heating when reacting liquid temperature reaches 50 ℃, reaction temperature is strict controlled in 88 ℃; Behind the reaction 50min, reduce the temperature to below 75 ℃, add 13 parts of second batch of NaOH solution, after adding, add 100 parts of second batch of formalins again, maintain the temperature at 80 ℃ of reaction 150min; Cool to 65 ℃ and add 50 parts in urea, reaction 10min makes temperature drop to 40 ℃ of son amount phenolic resins that promptly make low score again gradually.
Two, get 30 parts of 100 parts of pf resin of low molecular weight, fire retardants, 130 parts in water after synthetic, mix, promptly.
The effect test of test example 1 Wooden modifying liquid of the present invention
One, subjects: the Wooden modifying liquid 1-8 that embodiment 1-8 is prepared;
Two, test method
Use above embodiment 1-8 to carry out modification with poplar as the experiment material and handle, the mode of employing vacuum pressed is carried out the impregnation of timber modification and is handled.Vacuum 0.08MPa, vacuum time 30min, pressurization working pressure 1.0MPa, time 2h is drying to obtain Modified Poplar.
Three, result of the test
By the modifying cotton wood material that Wooden modifying liquid of the present invention is handled, final rate of body weight gain is 20～70%, and density improves 20～60%, oxygen index (OI) improves 10～70%, and dimensional stability improves 15～40%, and case hardness improves 80～150%, antiseptic property obviously improves, and water absorption rate reduces by 70～160%.
Claims (10)
1. a Wooden modifying liquid is characterized in that, comprising: pf resin of low molecular weight, auxiliary agent and water.
2. according to the described Wooden modifying liquid of claim 1, it is characterized in that the weight portion of each component is: pf resin of low molecular weight 60-140 part, auxiliary agent 0-90 part, water 0-600 part;
Preferably, the weight portion of each component is: pf resin of low molecular weight 80-120 part, auxiliary agent 20-40 part, water 30-130 part; Particularly preferred, the weight portion of each component is: 100 parts of pf resin of low molecular weight, 30 parts of auxiliary agents, 65 parts in water.
3. according to claim 1 or 2 described Wooden modifying liquid, it is characterized in that: described auxiliary agent is any one or more than one mixture formed by any part by weight in fire retardant, anticorrisive agent or the waterproofing agent.
4. according to claim 1 or 2 described Wooden modifying liquid, it is characterized in that described pf resin of low molecular weight comprises following component: 50～300 parts of phenol, 100～400 parts in 37% formaldehyde, 0～50 part in urea, 5～20 parts in 40% NaOH; Preferably, the weight portion of each component is: 100～200 parts of phenol, 200～400 parts in 37% formaldehyde, 30～50 parts in urea, 10～20 parts in 40% NaOH.
5. according to claim 1 or 2 described Wooden modifying liquid, it is characterized in that the preparation method of described pf resin of low molecular weight comprises:
(1) 37% formaldehyde that will account for gross weight 4/5-3/4 mixes with phenol and reacts, and obtains product 1;
(2) the NaOH solution that will account for gross weight 3/10-7/20 joins that the heating reactant liquor reacts in the product 1, obtains product 2;
(3) remaining NaOH solution is joined in the product 2, then add remaining formalin, proceed reaction, obtain product 3;
(4) in product 3, add urea and react, allow product lower the temperature gradually, promptly.
6. in accordance with the method for claim 5, it is characterized in that: in the step (1), 37% formaldehyde that accounts for gross weight 4/5-3/4 is mixed the back heat up reacting liquid temperature to 40 ℃ is reacted with phenol, obtain product 1.
7. it is characterized in that in accordance with the method for claim 5: being heated to be described in the step (2) is heated to 50 ℃ with reacting liquid temperature; Wherein, reaction temperature is controlled at 85～88 ℃; Reaction time is 50～70min.
8. in accordance with the method for claim 5, it is characterized in that: in the step (3),, remaining NaOH solution is joined in the product 2 when the temperature of product 2 drops to below 75 ℃; Wherein, described reaction temperature is 80～82 ℃, and the reaction time is 150～200min.
9. in accordance with the method for claim 5, it is characterized in that: when product 3 cools to 65 ℃, in product 3, add urea and react in the step (4); The wherein said reaction time is 10～30min, makes the product temperature drop to 40 ℃ promptly more gradually.
10. claim 1 or 2 application of described Wooden modifying liquid in Wooden modifying comprise: the timber that adopts the mode of vacuum pressed to treat modification with described Wooden modifying liquid floods the modification processing, drying, promptly.
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| CN2010102205065A CN102085679A (en) | 2010-06-28 | 2010-06-28 | Wood modifying solution as well as preparation method and application thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102941605A (en) * | 2012-10-24 | 2013-02-27 | 永港伟方（北京）科技股份有限公司 | Special wood modifier and preparation method thereof |
| CN103552140A (en) * | 2013-10-22 | 2014-02-05 | 浙江省林产品质量检测站 | Weather-resistant artificial bamboo and wooden board and manufacturing method thereof |
| CN103737685A (en) * | 2013-12-30 | 2014-04-23 | 中南林业科技大学 | Molecular antiseptic treatment method for wood veneers |
| CN104070572A (en) * | 2014-07-01 | 2014-10-01 | 中国林业科学研究院木材工业研究所 | Preparation method for multifunctional resin modifier for wood impregnation and application of multifunctional resin modifier |
| CN104118022A (en) * | 2014-07-22 | 2014-10-29 | 南京艾布纳密封技术有限公司 | Wood modifier and preparation method thereof |
| CN104647501A (en) * | 2013-11-19 | 2015-05-27 | 黄培伟 | A dipping solution used for functional modification of rubberwood timber |
| CN106832167A (en) * | 2017-01-16 | 2017-06-13 | 浙江农林大学 | The preparation method of Scrimber impregnated phenolic resin |
| CN106863514A (en) * | 2017-02-21 | 2017-06-20 | 太尔化工（南京）有限公司 | Green persistently application and preparation method of the anticorrosive mildewproof phenolic resin on Recombined bamboo |
| CN107398972A (en) * | 2017-09-11 | 2017-11-28 | 阜南县猛发工艺品有限公司 | A kind of processing method for improving hook leaf rattan material toughness |
| CN107599098A (en) * | 2017-08-23 | 2018-01-19 | 阜南县润杨家居有限公司 | A kind of purple willow anticracking processing method |
| CN110757603A (en) * | 2019-10-28 | 2020-02-07 | 中国林业科学研究院木材工业研究所 | Tenon surface layer resin impregnation treatment method and enhanced wood structure mortise and tenon joint |
| CN113146781A (en) * | 2021-03-10 | 2021-07-23 | 来安县扬子地板有限公司 | Modification method for improving stability of wood |
| CN114474267A (en) * | 2022-02-26 | 2022-05-13 | 漳州市桥头木业有限公司 | Corrosion-resistant plywood and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102941605A (en) * | 2012-10-24 | 2013-02-27 | 永港伟方（北京）科技股份有限公司 | Special wood modifier and preparation method thereof |
| CN102941605B (en) * | 2012-10-24 | 2015-09-30 | 永港伟方（北京）科技股份有限公司 | Special wood modifier and preparation method thereof |
| CN103552140A (en) * | 2013-10-22 | 2014-02-05 | 浙江省林产品质量检测站 | Weather-resistant artificial bamboo and wooden board and manufacturing method thereof |
| CN104647501A (en) * | 2013-11-19 | 2015-05-27 | 黄培伟 | A dipping solution used for functional modification of rubberwood timber |
| CN103737685B (en) * | 2013-12-30 | 2016-08-17 | 中南林业科技大学 | A kind of veneer molecule method for anticorrosion treatment |
| CN103737685A (en) * | 2013-12-30 | 2014-04-23 | 中南林业科技大学 | Molecular antiseptic treatment method for wood veneers |
| CN104070572A (en) * | 2014-07-01 | 2014-10-01 | 中国林业科学研究院木材工业研究所 | Preparation method for multifunctional resin modifier for wood impregnation and application of multifunctional resin modifier |
| CN104070572B (en) * | 2014-07-01 | 2016-08-17 | 中国林业科学研究院木材工业研究所 | A kind of preparation method and application of multi-functional timber dip resin modifying agent |
| CN104118022A (en) * | 2014-07-22 | 2014-10-29 | 南京艾布纳密封技术有限公司 | Wood modifier and preparation method thereof |
| CN104118022B (en) * | 2014-07-22 | 2016-08-24 | 南京博俊新材料有限公司 | A kind of Wood modifier and preparation method thereof |
| CN106832167A (en) * | 2017-01-16 | 2017-06-13 | 浙江农林大学 | The preparation method of Scrimber impregnated phenolic resin |
| CN106863514A (en) * | 2017-02-21 | 2017-06-20 | 太尔化工（南京）有限公司 | Green persistently application and preparation method of the anticorrosive mildewproof phenolic resin on Recombined bamboo |
| CN106863514B (en) * | 2017-02-21 | 2018-04-10 | 太尔化工（南京）有限公司 | Green persistently application and preparation method of the anticorrosive mildewproof phenolic resin on Recombined bamboo |
| CN107599098A (en) * | 2017-08-23 | 2018-01-19 | 阜南县润杨家居有限公司 | A kind of purple willow anticracking processing method |
| CN107398972A (en) * | 2017-09-11 | 2017-11-28 | 阜南县猛发工艺品有限公司 | A kind of processing method for improving hook leaf rattan material toughness |
| CN110757603A (en) * | 2019-10-28 | 2020-02-07 | 中国林业科学研究院木材工业研究所 | Tenon surface layer resin impregnation treatment method and enhanced wood structure mortise and tenon joint |
| CN113146781A (en) * | 2021-03-10 | 2021-07-23 | 来安县扬子地板有限公司 | Modification method for improving stability of wood |
| CN114474267A (en) * | 2022-02-26 | 2022-05-13 | 漳州市桥头木业有限公司 | Corrosion-resistant plywood and preparation method thereof |
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Application publication date: 20110608 |