CN110039626A - Assist into charcoal biology base expansion type flame-retarding timber - Google Patents

Assist into charcoal biology base expansion type flame-retarding timber Download PDF

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Publication number
CN110039626A
CN110039626A CN201910154646.8A CN201910154646A CN110039626A CN 110039626 A CN110039626 A CN 110039626A CN 201910154646 A CN201910154646 A CN 201910154646A CN 110039626 A CN110039626 A CN 110039626A
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China
Prior art keywords
timber
tank
maceration extract
air
auxiliary
Prior art date
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CN201910154646.8A
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Chinese (zh)
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CN110039626B (en
Inventor
姜鹏
李路明
陈志林
梁善庆
卢金汉
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Research Institute of Wood Industry of Chinese Academy of Forestry
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Research Institute of Wood Industry of Chinese Academy of Forestry
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Priority to CN201910154646.8A priority Critical patent/CN110039626B/en
Publication of CN110039626A publication Critical patent/CN110039626A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, 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
    • B27K3/00Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02Processes; Apparatus
    • B27K3/08Impregnating by pressure, e.g. vacuum impregnation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, 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
    • B27K3/00Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/34Organic impregnating agents
    • B27K3/50Mixtures of different organic impregnating agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, 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
    • B27K5/00Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/04Combined bleaching or impregnating and drying of wood
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K2240/00Purpose of the treatment
    • B27K2240/30Fireproofing

Abstract

There is provided it is a kind of auxiliary at charcoal biology base expansion type flame-retarding timber and its manufacturing method, the method for manufacturing the timber includes: by timber pickling in auxiliary carbon source, acid gas source;Timber after dipping is dried, wherein auxiliary carbon source is any or multiple combination of graphene oxide, carboxymethyl cellulose, sodium carboxymethylcellulose, starch, sucrose, dextrin;Acid gas source is collagen or carragheen.The mass ratio of acid gas source and auxiliary carbon source is 3~6:1.

Description

Assist into charcoal biology base expansion type flame-retarding timber
Technical field
The present invention relates to the application of flame-retarded technology in wood, more particularly to auxiliary at charcoal biology base expansion type flame-retarding wood Material and its manufacturing method.
Background technique
The combustibility of timber itself can cause great limitation, fire retarding wood as the application of construction material etc. to it Research have become important topic.
Timber have in combustion it is certain at charcoal, to have flame retardant property to a certain extent, but its at Charcoal poor quality, carbon-coating compactness, the uniformity are lower, how to improve timber at charcoal, being that fire-retarding of wood field is to be solved asks Topic.
In conventional art, by timber pickling in auxiliary carbon source, acid source, the Trinitarian mixed liquor of gas source, increase into charcoal It measures and obtains uniform fire-retardant charcoal frame using expansion, but without the compatibility and Biomass Characteristics etc. of three sources of solution and timber Problem, while to avoid anti-white phenomenon, polycondensation reaction is formed in wood surface using such as melamino-formaldehyde performed polymer etc., is made Complex process and increase cost.
Summary of the invention
The present invention provides a kind of method for manufacturing and assisting into charcoal biology base expansion type flame-retarding timber in view of the above technical problem And the novel auxiliary obtained based on this method is at charcoal biology base expansion type flame-retarding timber, can be realized into charcoal quality it is more excellent and The fire retarding wood and its manufacturing method of the Biomass Characteristics of not broken ring timber itself.
According to the first aspect of the invention, a kind of method for manufacturing and assisting into charcoal biology base expansion type flame-retarding timber is provided, Itself the following steps are included:
(1) by timber pickling in auxiliary carbon source, acid gas source;
(2) timber after dipping is dried,
Wherein, the auxiliary carbon source be graphene oxide, carboxymethyl cellulose, sodium carboxymethylcellulose, starch, sucrose, Any or multiple combination of dextrin;Acid gas source is collagen or carragheen.
In the above-mentioned methods, step (1) further includes the maceration extract that preparation includes auxiliary carbon source and acid gas source, by timber in institute It states in maceration extract and impregnates.
In the above-mentioned methods, step (1) may include:
Timber is placed in hermetic type impregnation tank, the maceration extract is imported to the process tank, maceration extract is made not have timber;
Process tank is vacuumized at air-tight state to be made to be kept for the first stipulated time in negative pressure in tank;
Air pressure in process tank is increased, and is kept for the second stipulated time;And
Release the air-tight state of process tank, the timber after being impregnated.
In the above-mentioned methods, step (1) further include:
Timber is placed in hermetic type impregnation tank, the maceration extract is imported to the process tank, maceration extract is made not have timber;
Process tank is vacuumized at air-tight state to be made to be kept for the first stipulated time in negative pressure in tank;And
The air-tight state of process tank is released, and is kept for the second stipulated time.
In the above-mentioned methods, step (1) also may include:
Timber is placed in hermetic type impregnation tank, process tank is vacuumized at air-tight state to be made in tank in negative pressure, benefit The maceration extract is imported to the process tank with the negative pressure, so that maceration extract was not had timber, and kept for the first stipulated time;
Air pressure in process tank is increased, and is kept for the third stipulated time;And
Release the air-tight state of process tank, the timber after being impregnated.
In addition, in the above-mentioned methods, using same substance as the acid source and gas source.The acid source and gas source can be adopted With collagen or carragheen.In this case, the mass ratio of acid gas source and auxiliary carbon source is 3~6:1 in the maceration extract.
According to the second aspect of the invention, one kind auxiliary as made from the above method is provided to hinder at charcoal biology base intumescent Firebrand material.
According to the present invention, auxiliary carbon source uses graphene oxide, carboxymethyl cellulose, sodium carboxymethylcellulose, starch, sugarcane Any or multiple combination of sugar, dextrin reduces industrial products pair since the above substance can be extracted using natural material The destruction of timber.Meanwhile in combustion, pass through chemical bonded refractory between the above substance and wood cell wall labile functional groups It closes, stability is stronger, in thermal degradation and combustion process, by the expansion in timber micro-structure, promotes to be formed finer and close Charcoal frame or layer of charcoal.
According to the present invention, acid source and gas source are used as simultaneously using a kind of substance, timber is made to obtain expandable flame retardant function, reduced As the use of dipping source material, cost has been saved, a kind of substance of this in the present invention uses collagen or carragheen, equally It can be extracted using natural material, reduce destruction of the industrial products to timber biological matter characteristic.
In addition, the carbon source used according to the present invention and acid gas source, so that the binding performance of timber and source material is superior, it will not There is anti-white phenomenon, avoids forming polycondensation in wood surface using such as melamino-formaldehyde performed polymer as the conventional art Reaction, leads to complex process and increases cost.
To, according to the method for the present invention, the novel auxiliary with biomass can be manufactured into charcoal expansion type flame-retarding timber, at Charcoal quality is more superior and does not break the Biomass Characteristics of ring timber itself.
Detailed description of the invention
Fig. 1 manufacture assists the flow chart of the method at charcoal biology base expansion type flame-retarding timber.
Fig. 2 is flow chart of the manufacture auxiliary at an example of the method for charcoal biology base expansion type flame-retarding timber.
Fig. 3 is another flow chart of the manufacture auxiliary at the method for charcoal biology base expansion type flame-retarding timber.
Fig. 4 is flow chart of the manufacture auxiliary at an example again of the method for charcoal biology base expansion type flame-retarding timber.
Specific embodiment
The application proposes a kind of new concept of fire retarding wood, i.e. " auxiliary is at charcoal biology base expansion type flame-retarding timber ", benefit With timber itself at charcoal attribute, the flame retardant property of timber itself is improved in conjunction with other ingredients with biomass and keeps timber Biomass Characteristics, manufacturing process substantially be add auxiliary carbon source fire retarding wood manufacturing method.
Referring to Fig.1, in the manufacturing process in the above-mentioned auxiliary at charcoal biology base expansion type flame-retarding timber, including following step It is rapid:
S100: by timber pickling in auxiliary carbon source, acid gas source;
S200: the timber after dipping is dried,
Wherein, the auxiliary carbon source be graphene oxide, carboxymethyl cellulose, sodium carboxymethylcellulose, starch, sucrose, Any or multiple combination of dextrin;Acid gas source is collagen or carragheen.
Timber alleged by the present invention is to refer to the plant of secondary growth to be formed by lignified tissue.
Timber will form layer of charcoal or charcoal frame in combustion, but neat coal amout is insufficient, and poor quality, unevenly and not Enough densifications.According to the solution of the present invention, the auxiliary carbon source as carbon forming agent is immersed in timber, to assist the carbon source shape of timber itself At the basis of foam charring layer, increase neat coal amout.
According to the present invention, auxiliary carbon source uses graphene oxide, carboxymethyl cellulose, sodium carboxymethylcellulose, starch, sugarcane Any or multiple combination of sugar, dextrin reduces industrial products pair since the above substance can be extracted using natural material The destruction of timber.Meanwhile in combustion, pass through chemical bonded refractory between the above substance and wood cell wall labile functional groups It closes, stability is stronger, in thermal degradation and combustion process, by the expansion in timber micro-structure, promotes to be formed finer and close Charcoal frame or layer of charcoal.
Acid source is also known as dehydrating agent, plays the role of carbonizing promotor.Gas source is also named foaming source, for expanded charred layer to obtain Obtain uniformity.
According to the present invention, acid source and gas source are used as simultaneously using a kind of substance, timber is made to obtain expandable flame retardant function, reduced As the use of dipping source material, cost has been saved, a kind of substance of this in the present invention uses collagen or carragheen, equally It can be extracted using natural material, reduce destruction of the industrial products to timber biological matter characteristic.
The carbon source used according to the present invention and acid gas source are not in so that the binding performance of timber and source material is superior Anti- frost phenomenon avoids anti-using polycondensation is formed in wood surface such as melamino-formaldehyde performed polymer as the conventional art It answers, lead to complex process and increases cost.
The present invention carries out the research at carbon flame-proof for the characteristic of natural timber, can manufacture novel with based on biology base Auxiliary at charcoal expansion type flame-retarding timber, the biomass of more superior at charcoal quality and not broken ring timber itself.
In above-mentioned steps S100, about impregnation of timber, timber can be impregnated in auxiliary carbon source and acid gas source respectively, The maceration extract including auxiliary carbon source and acid gas source can also be prepared, timber is impregnated in the maceration extract.
In the case that timber to be impregnated in auxiliary carbon source and acid gas source respectively, the present invention is set between two impregnation steps Fixed 4th stipulated time, such as24 hoursMore than, it reacts first step dipping modifying agent sufficiently with timber, passes through chemical bonded refractory It closes, avoids being precipitated in second step dipping modifying process, cause damages.So as to utilize dipping auxiliary carbon source and acid gas respectively The convenience in source flexibly handles dipping process, such as will impregnate the progress acid gas source of the material of auxiliary carbon source merely Dipping, to reduce cost and avoid oversteeping.
In the embodiment shown in Fig. 2~4, above-mentioned steps S100 includes step S101, i.e., preparation include auxiliary carbon source and The maceration extract in acid gas source impregnates timber in the maceration extract.
In this case, as shown in Fig. 2, step (1) may include:
Timber is placed in hermetic type impregnation tank by S102, is imported the maceration extract to the process tank, was not had maceration extract Timber;
S103, which vacuumizes process tank at air-tight state, to be made to be kept for the first stipulated time in negative pressure in tank;
S104 increases air pressure in process tank, and is kept for the second stipulated time;And
S105 releases the air-tight state of process tank, the timber after being impregnated.
Under normal circumstances, the timber below of moisture content such as 10% is placed in the impregnation tank of hermetic type, but contained Water rate is it is not limited here.The maceration extract comprising auxiliary carbon source and acid gas source is imported, it is so-called that maceration extract is made not have timber to be Instigate timber thorough impregnation in maceration extract.The maceration extract for example by the way that auxiliary carbon source and acid gas source are dissolved in distilled water, After completely dissolution, standing obtains for 24 hours for stirring, but is specifically not limited to this, as long as available auxiliary carbon source and acid gas source Mixed impregnant liquor.The impregnation tank of hermetic type is formed into air-tight state, vacuumizing makes negative pressure in tank, such as at vacuum Degree -1MPa, and kept for the first stipulated time, such as 15~60 minutes, but vacuum degree and the first stipulated time do not do herein It limits, those skilled in the art can select according to the actual situation.Then, air pressure in process tank is increased, and keeps second Stipulated time.It can be by releasing vacuum here, increasing air pressure in process tank, into tank, inflation pressure realizes that pressure is for example steady It is scheduled on 1.0~1.5MPa, the second stipulated time of pressure maintaining, such as 24 hours, above-mentioned pressure and the second stipulated time be not herein or not It limits, those skilled in the art can select according to the actual situation.Finally, releasing the air-tight state of process tank, take out Timber after dipping, or discharge maceration extract is with the timber after being impregnated.
As an alternative embodiment, referring to Fig. 3, increasing air pressure in process tank can also be handled by step S106 releasing Tank air-tight state realizes that after to timber impregnating by pressure, impregnated liquid fills up in the pore of timber itself, when releasing process tank Air-tight state, after realizing atmospheric pressure, actually wood internal is still within pressurising state.In this case, can be kept Two stipulated times, such as 24 hours, but not limited thereto.
Timber can also be first placed in hermetic type as shown in step S102a referring to Fig. 4 as another alternative embodiment Impregnation tank, process tank is vacuumized at air-tight state to be made to import institute to the process tank using the negative pressure in negative pressure in tank Maceration extract is stated, so that maceration extract was not had timber, and kept for the first stipulated time, and then increase gas in process tank in step s 107 Pressure, and kept for the third stipulated time;Finally, releasing the air-tight state of process tank, the wood after being impregnated as shown in step S108 Material.In the alternative, guides maceration extract to enter process tank by negative pressure, be more advantageous to the pore that maceration extract is initially entered into timber. To increase in process tank after air pressure, the third stipulated time of holding needed for can suitably reducing.
In above-mentioned steps S200, the timber after dipping is dried.Such as the timber after dipping is placed in dry Gas dry-cure is carried out in dry kiln, can also be placed in the dry 72h of freeze drier and is put into forced air drying after can also standing 3 hours In case, 103 DEG C of drying are set, and it is not limited here, those skilled in the art can be according to the actual situation for specific drying mode It is selected.
Including the maceration extract of auxiliary carbon source and acid gas source using preparation, timber is impregnated to progress wood in the maceration extract In the case that material impregnates, the mass ratio of acid gas source and auxiliary carbon source is 3~6:1 in the maceration extract.
The application is described in further detail with reference to embodiments.It is understood that tool described herein Body embodiment is used only for explaining related invention, rather than the restriction to the invention.It should be noted that the case where not conflicting Under, the features in the embodiments and the embodiments of the present application can be combined with each other.Following embodiment carries out base using identical timber In the modification of technical solution of the present invention, which uses poplar and Cunninghamia Lanceolata Plantations having a size of 100mm*400mm*50mm Fast growing wood, but the present invention is not necessarily limited to this naturally.
Embodiment 1
15g protein adhesive is dissolved in the graphene oxide that 1000ml concentration is 2.5mg/ml, stirring after completely dissolution, is stood 24h.Wood sample having a size of 100mm*400mm*50mm is completely immersed in above-mentioned solution, is placed in vacuum pressing impregnation tank, It is evacuated to negative pressure, then pressure maintaining 15-60min carries out being forced into 1-1.5MPa, pressure maintaining is for 24 hours.Wood sample is taken out, table is removed Household freezer freezing is put into after the impurity of face for 24 hours, after with the dry 72h of freeze drier, obtain the biology base intumescent resistance for assisting into charcoal Firebrand material.
Embodiment 2
Graphene oxide is replaced with into carboxymethyl cellulose, other are same as Example 1.
Embodiment 3
Graphene oxide is replaced with into sodium carboxymethylcellulose, other are same as Example 1.
Embodiment 4
Graphene oxide is replaced with into starch, other are same as Example 1.
Embodiment 5
Graphene oxide is replaced with into sucrose, other are same as Example 1.
Embodiment 6
Graphene oxide is replaced with into dextrin, other are same as Example 1.
Embodiment 7
Graphene oxide is replaced with into carboxymethyl cellulose, protein adhesive replaces with carragheen, other are same as Example 1.
Embodiment 8
Graphene oxide is replaced with into sodium carboxymethylcellulose, protein adhesive replaces with carragheen, other and 1 phase of embodiment Together.
Embodiment 9
Graphene oxide is replaced with into starch, protein adhesive replaces with carragheen, other are same as Example 1.
Embodiment 10
Graphene oxide is replaced with into sucrose, protein adhesive replaces with carragheen, other are same as Example 1.
Embodiment 11
Graphene oxide is replaced with into dextrin, protein adhesive replaces with carragheen, other are same as Example 1.
Embodiment 12
15g protein adhesive is dissolved in the graphene oxide that 1000ml concentration is 5mg/ml, other are same as Example 1.
Embodiment 13
Graphene oxide is replaced with into carboxymethyl cellulose, other are identical as embodiment 12.
Embodiment 14
Graphene oxide is replaced with into sodium carboxymethylcellulose, other are identical as embodiment 12.
Embodiment 15
Graphene oxide is replaced with into starch, other are identical as embodiment 12.
Embodiment 16
Graphene oxide is replaced with into sucrose, other are identical as embodiment 12.
Embodiment 17
Graphene oxide is replaced with into dextrin, other are identical as embodiment 12.
Embodiment 18
Graphene oxide is replaced with into carboxymethyl cellulose, protein adhesive replaces with carragheen, other are identical as embodiment 12.
Embodiment 19
Graphene oxide is replaced with into sodium carboxymethylcellulose, protein adhesive replaces with carragheen, other and 12 phase of embodiment Together.
Embodiment 20
Graphene oxide is replaced with into starch, protein adhesive replaces with carragheen, other are identical as embodiment 12.
Embodiment 21
Graphene oxide is replaced with into sucrose, protein adhesive replaces with carragheen, other are identical as embodiment 12.
Embodiment 22
Graphene oxide is replaced with into dextrin, protein adhesive replaces with carragheen, other are identical as embodiment 12.
Embodiment 23
15g protein adhesive is dissolved in the graphene oxide that 1000ml concentration is 4mg/ml, other are identical as embodiment 23.
Embodiment 24
Graphene oxide is replaced with into carboxymethyl cellulose, other are identical as embodiment 23.
Embodiment 25
Graphene oxide is replaced with into sodium carboxymethylcellulose, other are identical as embodiment 23.
Embodiment 26
Graphene oxide is replaced with into starch, other are identical as embodiment 23.
Embodiment 27
Graphene oxide is replaced with into sucrose, other are identical as embodiment 23.
Embodiment 28
Graphene oxide is replaced with into dextrin, other are identical as embodiment 23.
Embodiment 29
Graphene oxide is replaced with into carboxymethyl cellulose, protein adhesive replaces with carragheen, other are identical as embodiment 23.
Embodiment 30
Graphene oxide is replaced with into sodium carboxymethylcellulose, protein adhesive replaces with carragheen, other and 23 phase of embodiment Together.
Embodiment 31
Graphene oxide is replaced with into starch, protein adhesive replaces with carragheen, other are identical as embodiment 23.
Embodiment 32
Graphene oxide is replaced with into sucrose, protein adhesive replaces with carragheen, other are identical as embodiment 23.
Embodiment 33
Graphene oxide is replaced with into dextrin, protein adhesive replaces with carragheen, other are identical as embodiment 23.
To timber and the modified timber progress combustion experiment of above embodiments gained before modified, before obtaining Wooden modifying Rear contrast properties as a result, to use the modified timber of flame-retarded technology of the invention, especially by by timber pickling in The mass ratio of acid gas source and auxiliary carbon source is can to obtain excellent flame retardant effect in the maceration extract of 3~6:1, specifically be shown in down Table 1.
Wherein, the criterion of V1, V2 and off grade is GB/T 2408-1996 and ISO1210-1992.
Table 1
According to above embodiments, those skilled in the art are natural it will be appreciated that above-mentioned carbon source and acid gas source can choose State scheme material it is a kind of can also carry out any combination, be also able to achieve excellent effect of the present invention.

Claims (8)

1. a kind of manufacture auxiliary is at the method for charcoal biology base expansion type flame-retarding timber, which comprises the following steps:
(1) by timber pickling in auxiliary carbon source, acid gas source;
(2) timber after dipping is dried,
Wherein, the auxiliary carbon source is graphene oxide, carboxymethyl cellulose, sodium carboxymethylcellulose, starch, sucrose, dextrin Any or multiple combination;Acid gas source is collagen or carragheen.
2. the method as described in claim 1, which is characterized in that
Step (1) further includes the maceration extract that preparation includes the auxiliary carbon source and the acid gas source, by timber in the maceration extract Middle dipping.
3. method according to claim 2, which is characterized in that
Step (1) further include:
Timber is placed in hermetic type impregnation tank, the maceration extract is imported to the process tank, maceration extract is made not have timber;
Process tank is vacuumized at air-tight state to be made to be kept for the first stipulated time in negative pressure in tank;
Air pressure in process tank is increased, and is kept for the second stipulated time;And
Release the air-tight state of process tank, the timber after being impregnated.
4. method according to claim 2, which is characterized in that step (1) further include:
Timber is placed in hermetic type impregnation tank, the maceration extract is imported to the process tank, maceration extract is made not have timber;
Process tank is vacuumized at air-tight state to be made to be kept for the first stipulated time in negative pressure in tank;And
The air-tight state of process tank is released, and is kept for the second stipulated time.
5. method according to claim 2, which is characterized in that
Step (1) further include:
Timber is placed in hermetic type impregnation tank, process tank is vacuumized at air-tight state to be made to utilize this in negative pressure in tank Negative pressure imports the maceration extract to the process tank, so that maceration extract was not had timber, and kept for the first stipulated time;
Air pressure in process tank is increased, and is kept for the third stipulated time;And
Release the air-tight state of process tank, the timber after being impregnated.
6. method according to claim 2, which is characterized in that
The mass ratio of acid gas source and auxiliary carbon source is 3~6:1 in the maceration extract.
7. the method as described in claim 1, which is characterized in that
Step (1) further includes that timber is impregnated in auxiliary carbon source, acid gas source respectively, and the 4th rule are separated by between two dipping process It fixes time.
8. a kind of auxiliary is at charcoal biology base expansion type flame-retarding timber, which is characterized in that by described in any one of claim 1~7 Method be made.
CN201910154646.8A 2019-03-01 2019-03-01 Auxiliary char-forming bio-based expansion type flame-retardant wood and manufacturing method thereof Active CN110039626B (en)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
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Publication number Priority date Publication date Assignee Title
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CN102659959A (en) * 2012-04-13 2012-09-12 同济大学 Preparation method of three-in-one intumescent fire retardant
CN108453853A (en) * 2017-10-17 2018-08-28 徐州顺平生物科技有限公司 A kind of high fire-retardance timber

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