CN109896858A - A kind of preparation method of the porous wooden ceramic composite - Google Patents
A kind of preparation method of the porous wooden ceramic composite Download PDFInfo
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Abstract
The invention discloses a kind of preparation methods of porous wooden ceramic composite, belong to building material technical field.Wood powder is mixed immersion with sodium hydroxide solution by the present invention, is filtered, dry, obtains single treatment wood powder；Single treatment wood powder is mixed into ultrasound, crystallisation by cooling with sodium sulphate saturated solution, filtering obtains secondary treatment wood powder；Secondary treatment wood powder is mixed into immersion with calcium chloride solution, is filtered, is obtained and handle wood powder three times；Wood powder will be handled three times and mixes immersion with sodium alginate solution, be filtered, it is dry, cladding wood powder must be modified；Will modified cladding wood powder, phenolic resin, polyacrylic acid zinc resin, ethyl orthosilicate, silane coupling agent, curing agent is stirred, and injection molding, vacuum carbonized, nitrogen charging pyroreaction, cooling is to get the porous wooden ceramic composite.The porous wooden ceramic composite provided by the invention has high porosity and excellent mechanical property.
Description
Technical field
The invention discloses a kind of preparation methods of porous wooden ceramic composite, belong to building material technical field.
Background technique
The wooden ceramics, main raw material is the impregnated timber of phenolic resin (or wood materials).Raw material is in starvation
Under the conditions of be sintered, be made wood ceramics.The manufacturing process of the wooden ceramics can be divided into three kinds: a. wood materials first after resin impregnates, charcoal
Change obtains the wooden ceramic board, and then reprocessing is finished product；B. wood materials first pass through machining molding, then are impregnated with resin,
High temperature sintering finally carries out grinding again；C. lumber fibre is mixed with phenolic resin, hardened forming, then carries out high temperature burning
Knot, then carry out grinding.And in the manufacturing process of entire wood ceramics, committed step is resin dipping and high temperature sintering wood pottery
Porcelain.
The wooden ceramics are usually to be carbonized to make through high-temperature vacuum after impregnating thermosetting resin or Liquefied wood by various wood materials
At, it is both a kind of novel environmentally friendly material and a kind of novel porous carbon materials.It is reported that in carbonisation
In, thermosetting resin is changed into the hard carbon of glassy state, and wood powder is changed into unbodied soft carbon, is formed simultaneously many stomatas, therefore
The wooden ceramics are made of vitreous carbon, amorphous carbon and stomata.This special construction of exactly wood ceramics determines the wooden ceramics tool
There are many excellent performances, such as good heat-insulated, abrasion-resistant abrasion, corrosion-resistant, damping, electricity and electromagnetic shielding performance, with
And the characteristics such as high-specific surface area, lightweight, porous.The raw material sources of the wooden ceramics are extensive, such as various pomaces, waste paper, discarded farming
Object and wood materials etc..To sum up, the wooden ceramic performance is excellent, raw material is cheap, and production cost is low and free from environmental pollution, is a kind of
Novel engineering material and ecomaterial.Enzymolysis xylogen (EHL) is that functional polysaccharide, biology are prepared from biomass enzymatic hydrolysis naturally
It is extracted in the residue of the biorefineries process such as gas, bio-ethanol, entire extraction process is all in relatively mild condition
Lower progress, the original many functional groups of lignin, such as phenolic hydroxyl group, alcoholic extract hydroxyl group and methoxyl group, are all preferably retained.Cause
This, enzymolysis xylogen has better application value relative to the lignin product that traditional paper industry obtains.Rationally utilize enzyme
Lignin is solved, the effective use of natural resources can not only be promoted, reduces pollution, and can bring for biorefinery industry considerable
Economic interests.But traditional wood ceramics are there is also porosity is low and the bad problem of mechanical property at present, therefore also need to it
It is studied.
Summary of the invention
The present invention solves the technical problem of: it is low for the ceramic porosity of traditional wood and mechanical property is bad asks
Topic provides a kind of preparation method of porous wooden ceramic composite.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
(1) it by the drying of wood, crushes, crosses the sieve of 80 mesh, obtain wood powder；
(2) wood powder is mixed into immersion with sodium hydroxide solution 1:20~1:30 in mass ratio, filtered, washed, it is dry, it obtains and once locates
Manage wood powder；
(3) single treatment wood powder is mixed into ultrasound, crystallisation by cooling, mistake with sodium sulphate saturated solution 1:20~1:30 in mass ratio
Filter, obtains secondary treatment wood powder；
(4) secondary treatment wood powder is mixed into immersion by weight 1:20~1:30 with calcium chloride solution, filtered, obtain processing wood three times
Powder；
(5) wood powder will be handled three times and mix immersion with sodium alginate solution 1:20~1:30 in mass ratio, filter, it is dry, obtain modification
Coat wood powder；
(6) according to parts by weight, by 30~40 parts of modified cladding wood powders, 40~50 parts of phenolic resin, 10~20 parts of polyacrylic acid
Zinc resin, 10~20 parts of ethyl orthosilicates, 5~8 parts of silane coupling agents, 5~8 parts of curing agent are stirred, injection molding, solidification, very
Sky charing, nitrogen charging pyroreaction, cooling is to get the porous wooden ceramic composite.
Step (1) timber is poplar, birch, any one in pine or cypress.
Step (3) the sodium sulphate saturated solution is the sodium sulphate saturated solution that temperature is 20~22 DEG C.
Step (6) phenolic resin is any one in phenolic resin 2123 or phenolic resin 2127.
Step (6) silane coupling agent is silane resin acceptor kh-550, silane coupling agent KH-560 or silane coupling agent
Any one in KH-570.
Step (6) curing agent is diethylenetriamine, any one in triethylene tetramine or dipropylenetriamine.
The beneficial effects of the present invention are:
Technical solution of the present invention, firstly, wood powder is impregnated by sodium hydroxide solution, sodium hydroxide can decompose wood powder fiber surface half
Cellulose and lignin soak so that wood powder fibrocyte permeability is further improved in subsequent sulphuric acid sodium saturated solution
During bubble, sodium sulphate saturated solution rapid osmotic enters in wood powder, and during crystallisation by cooling, sulfate crystal is formed
Disodium sulfate decahydrate, then by impregnating calcium chloride solution and sodium alginate solution, so that wood powder surface forms sodium alginate cladding
Disodium sulfate decahydrate is fixed in wood powder by film, during cured later, as temperature increases, in sal glauberi crystal
It is changed into free water in conjunction with water, re-forms metabisulfite solution, during vacuum carbonized, due to pressure inside modified cladding wood powder
Power is greater than the external world, so that coating film ruptures, internal metabisulfite solution oozes out, and zinc ion can be with seawater in polyacrylic acid zinc resin
In sodium ion ion exchange occurs, so that polyacrylic acid zinc resin be made to become solvable with one end of zinc ion, part poly- third
Olefin(e) acid zinc resin is dissolved in water, forms aqueous solution, the mobile diffusion in system, meanwhile, the water penetrated and ethyl orthosilicate are anti-
It answers, the silica and ethyl alcohol of generation, ethyl alcohol vaporize under the high temperature conditions, form alcohol vapour, and alcohol vapour assists polypropylene
Sour zinc resin aqueous solution is spread in system, and the flowing of aqueous solution can carry diffusion of the silica of generation in system,
In alcohol vapour, ethyl orthosilicate aqueous solution and silica three cooperate under diffusion, further improve the hole of system
Gap rate, so that the thermal insulation property of system is further promoted, meanwhile, liquid diffusion can be such that silica is uniformly distributed
In system, under the conditions of high temperature nitrogen charging, silica, carbonaceous and nitrogen react, the silicon nitride of generation, the silicon nitride of generation
It is evenly distributed in duct, so that the mechanical property of system gets a promotion.
Specific embodiment
Sodium alginate and water 1:30~1:50 in mass ratio are placed in No. 1 beaker, stir 10~20min with glass bar,
3~4h of swelling is stood, then No. 1 beaker is placed in digital display and is tested the speed in constant temperature blender with magnetic force, is 80~85 DEG C in temperature, revolving speed is
Under the conditions of 300~500r/min, heating stirring mixes 40~60min to get sodium alginate solution；Timber is placed in dryer,
It is dry to constant weight under the conditions of temperature is 105~110 DEG C, desiccated wood is obtained, desiccated wood is then placed in powder in pulverizer
It is broken, the sieve of 70 mesh is crossed, wood powder is obtained；Sodium hydroxide solution 1:20~1 in mass ratio for being 30~40% by wood powder and mass fraction:
30 are placed in reaction kettle, and under the conditions of revolving speed is 400~500r/min, 3~5h is impregnated in mixing, No. 1 soak are obtained, then by 1
The filtering of number soak, obtains filter residue, and residue washing to cleaning solution is neutral by the hydrochloric acid for being then 20~30% with mass fraction, then
Filter residue after washing is placed in baking oven, it is dry to constant weight under the conditions of temperature is 105~110 DEG C, obtain single treatment wood powder；
Single treatment wood powder and sodium sulphate saturated solution 1:20~1:30 in mass ratio are placed in No. 2 beakers, then set No. 2 beakers
In ultrasonic disperse instrument, under the conditions of frequency is 55~75kHz, 40~60min of ultrasound is mixed, dispersion liquid is obtained, it then will dispersion
Liquid, which is placed in refrigerator, is cooled to 2~4 DEG C, after standing 6~8h of crystallisation by cooling, obtains coolant liquid, then filters coolant liquid, obtain secondary
Handle wood powder；The calcium chloride solution that secondary treatment wood powder and mass fraction are 20~30% is placed in 2 by weight 1:20~1:30
In number beaker, under the conditions of revolving speed is 200~300r/min, 1~5min is impregnated in mixing, obtains No. 2 soaks, then No. 2 are impregnated
Liquid filtering, obtains and handles wood powder three times；Wood powder will be handled three times and sodium alginate solution 1:20~1:30 in mass ratio is placed in No. 3 beakers
In, under the conditions of revolving speed is 200~300r/min, 10~20min is impregnated in mixing, obtains No. 3 soaks, then by No. 3 soak mistakes
Filter, obtains filter cake, then filter cake is placed in baking oven, dry to constant weight under the conditions of temperature is 105~110 DEG C, obtains modified cladding
Wood powder；According to parts by weight, by 30~40 parts of modified cladding wood powders, 40~50 parts of phenolic resin, 10~20 parts of polyacrylic acid zinc
Resin, 10~20 parts of ethyl orthosilicates, 5~8 parts of silane coupling agents, 5~8 parts of curing agent are placed in batch mixer, in revolving speed be 300
Under the conditions of~500r/min, it is stirred 40~60min, obtains mixed slurry, is then injected mixed slurry in mold, Yu Wendu
Under the conditions of 150~160 DEG C, solidifies 40~60min, obtain blank, then blank is placed in vacuum-sintering retort, and with 5
The heating of~8 DEG C/min rate, rises to 1000~1100 DEG C for in-furnace temperature, under the conditions of temperature is 1000~1100 DEG C, vacuum
After carbonizing 1~2h, cooling obtains pretreatment blank, and then pretreatment blank is placed in sintering furnace, and with 60~90mL/min speed
Rate is filled with nitrogen into furnace, under the conditions of temperature is 1500~1600 DEG C, after 2~3h of nitrogen charging pyroreaction, is down to room temperature with furnace,
Up to the porous wooden ceramic composite.The timber is poplar, birch, any one in pine or cypress.The sodium sulphate
Saturated solution is the sodium sulphate saturated solution that temperature is 20~22 DEG C.The phenolic resin is phenolic resin 2123 or phenolic resin
Any one in 2127.The silane coupling agent is silane resin acceptor kh-550, silane coupling agent KH-560 or silane coupled
Any one in agent KH-570.The curing agent is diethylenetriamine, any one in triethylene tetramine or dipropylenetriamine
Kind.
Sodium alginate and water 1:50 in mass ratio are placed in No. 1 beaker, stir 20min with glass bar, stands swelling 4h,
No. 1 beaker is placed in digital display again to test the speed in constant temperature blender with magnetic force, is 85 DEG C in temperature, under the conditions of revolving speed is 500r/min, adds
60min is to get sodium alginate solution for thermal agitation mixing；Timber is placed in dryer, under the conditions of temperature is 110 DEG C, drying is extremely
Constant weight obtains desiccated wood, then desiccated wood is placed in pulverizer and is crushed, and crosses the sieve of 70 mesh, obtains wood powder；By wood powder and quality
The sodium hydroxide solution 1:30 in mass ratio that score is 40% is placed in reaction kettle, under the conditions of revolving speed is 500r/min, mixing leaching
5h is steeped, No. 1 soak is obtained, then No. 1 soak is filtered, obtains filter residue, is then washed filter residue with the hydrochloric acid that mass fraction is 30%
Washing to cleaning solution is neutrality, then the filter residue after washing is placed in baking oven, dry to constant weight under the conditions of temperature is 110 DEG C, is obtained
Single treatment wood powder；Single treatment wood powder and sodium sulphate saturated solution 1:30 in mass ratio are placed in No. 2 beakers, then by 2
Number beaker is placed in ultrasonic disperse instrument, under the conditions of frequency is 75kHz, is mixed ultrasound 60min, is obtained dispersion liquid, will then be dispersed
Liquid, which is placed in refrigerator, is cooled to 4 DEG C, after standing crystallisation by cooling 8h, obtains coolant liquid, then filters coolant liquid, obtains secondary treatment wood
Powder；The calcium chloride solution that secondary treatment wood powder and mass fraction are 30% is placed in No. 2 beakers by weight 1:30, in revolving speed
Under the conditions of 300r/min, 5min is impregnated in mixing, obtains No. 2 soaks, then No. 2 soaks are filtered, obtains and handle wood powder three times；It will
Processing wood powder and sodium alginate solution 1:30 in mass ratio are placed in No. 3 beakers three times, under the conditions of revolving speed is 300r/min, mixing
20min is impregnated, No. 3 soaks is obtained, then No. 3 soaks are filtered, obtains filter cake, then filter cake is placed in baking oven, be in temperature
It is dry to constant weight under the conditions of 110 DEG C, cladding wood powder must be modified；According to parts by weight, by 40 parts of modified cladding wood powders, 50 parts of phenol
Urea formaldehyde, 20 parts of polyacrylic acid zinc resins, 20 parts of ethyl orthosilicates, 8 parts of silane coupling agents, 8 parts of curing agent are placed in batch mixer,
Under the conditions of revolving speed is 500r/min, it is stirred 60min, obtains mixed slurry, then injected mixed slurry in mold, Yu Wen
Under the conditions of degree is 160 DEG C, solidifies 60min, obtain blank, then blank is placed in vacuum-sintering retort, and with 8 DEG C/min speed
Rate heating, rises to 1100 DEG C for in-furnace temperature, and under the conditions of temperature is 1100 DEG C, after vacuum carbonized 2h, cooling obtains pretreatment base
Pretreatment blank is then placed in sintering furnace, and is filled with nitrogen into furnace with 90mL/min rate by material, in temperature be 1600 DEG C
Under the conditions of, after nitrogen charging pyroreaction 3h, room temperature is down to get the porous wooden ceramic composite with furnace.The timber is poplar.Institute
Stating sodium sulphate saturated solution is the sodium sulphate saturated solution that temperature is 22 DEG C.The phenolic resin is phenolic resin 2123.It is described
Silane coupling agent is silane resin acceptor kh-550.The curing agent is diethylenetriamine.
Sodium alginate and water 1:50 in mass ratio are placed in No. 1 beaker, stir 20min with glass bar, stands swelling 4h,
No. 1 beaker is placed in digital display again to test the speed in constant temperature blender with magnetic force, is 85 DEG C in temperature, under the conditions of revolving speed is 500r/min, adds
60min is to get sodium alginate solution for thermal agitation mixing；Timber is placed in dryer, under the conditions of temperature is 110 DEG C, drying is extremely
Constant weight obtains desiccated wood, then desiccated wood is placed in pulverizer and is crushed, and crosses the sieve of 70 mesh, obtains wood powder；By wood powder and quality
The sodium hydroxide solution 1:30 in mass ratio that score is 40% is placed in reaction kettle, under the conditions of revolving speed is 500r/min, mixing leaching
5h is steeped, No. 1 soak is obtained, then No. 1 soak is filtered, obtains filter residue, is then washed filter residue with the hydrochloric acid that mass fraction is 30%
Washing to cleaning solution is neutrality, then the filter residue after washing is placed in baking oven, dry to constant weight under the conditions of temperature is 110 DEG C, is obtained
Single treatment wood powder；Single treatment wood powder and sodium sulphate saturated solution 1:30 in mass ratio are placed in No. 2 beakers, then by 2
Number beaker is placed in ultrasonic disperse instrument, under the conditions of frequency is 75kHz, is mixed ultrasound 60min, is obtained dispersion liquid, will then be dispersed
Liquid, which is placed in refrigerator, is cooled to 4 DEG C, after standing crystallisation by cooling 8h, obtains coolant liquid, then filters coolant liquid, obtains secondary treatment wood
Powder；The calcium chloride solution that secondary treatment wood powder and mass fraction are 30% is placed in No. 2 beakers by weight 1:30, in revolving speed
Under the conditions of 300r/min, 5min is impregnated in mixing, obtains No. 2 soaks, then No. 2 soaks are filtered, obtains and handle wood powder three times；It will
Processing wood powder and sodium alginate solution 1:30 in mass ratio are placed in No. 3 beakers three times, under the conditions of revolving speed is 300r/min, mixing
20min is impregnated, No. 3 soaks is obtained, then No. 3 soaks are filtered, obtains filter cake, then filter cake is placed in baking oven, be in temperature
It is dry to constant weight under the conditions of 110 DEG C, cladding wood powder must be modified；According to parts by weight, by 40 parts of modified cladding wood powders, 50 parts of phenol
Urea formaldehyde, 20 parts of polyacrylic acid zinc resins, 8 parts of silane coupling agents, 8 parts of curing agent are placed in batch mixer, in revolving speed be 500r/
Under the conditions of min, be stirred 60min, obtain mixed slurry, then by mixed slurry inject mold in, in temperature be 160 DEG C of conditions
Under, solidify 60min, obtain blank, then blank is placed in vacuum-sintering retort, and with the heating of 8 DEG C/min rate, it will be in furnace
Temperature rises to 1100 DEG C, and under the conditions of temperature is 1100 DEG C, after vacuum carbonized 2h, cooling obtains pretreatment blank, will then locate in advance
Reason blank is placed in sintering furnace, and nitrogen is filled with into furnace with 90mL/min rate, and under the conditions of temperature is 1600 DEG C, nitrogen charging is high
After temperature reaction 3h, room temperature is down to get the porous wooden ceramic composite with furnace.The timber is poplar.The sodium sulphate saturation
Solution is the sodium sulphate saturated solution that temperature is 22 DEG C.The phenolic resin is phenolic resin 2123.The silane coupling agent is
Silane resin acceptor kh-550.The curing agent is diethylenetriamine.
Sodium alginate and water 1:50 in mass ratio are placed in No. 1 beaker, stir 20min with glass bar, stands swelling 4h,
No. 1 beaker is placed in digital display again to test the speed in constant temperature blender with magnetic force, is 85 DEG C in temperature, under the conditions of revolving speed is 500r/min, adds
60min is to get sodium alginate solution for thermal agitation mixing；Timber is placed in dryer, under the conditions of temperature is 110 DEG C, drying is extremely
Constant weight obtains desiccated wood, then desiccated wood is placed in pulverizer and is crushed, and crosses the sieve of 70 mesh, obtains wood powder；By wood powder and quality
The sodium hydroxide solution 1:30 in mass ratio that score is 40% is placed in reaction kettle, under the conditions of revolving speed is 500r/min, mixing leaching
5h is steeped, No. 1 soak is obtained, then No. 1 soak is filtered, obtains filter residue, is then washed filter residue with the hydrochloric acid that mass fraction is 30%
Washing to cleaning solution is neutrality, then the filter residue after washing is placed in baking oven, dry to constant weight under the conditions of temperature is 110 DEG C, is obtained
Single treatment wood powder；Single treatment wood powder and sodium sulphate saturated solution 1:30 in mass ratio are placed in No. 2 beakers, then by 2
Number beaker is placed in ultrasonic disperse instrument, under the conditions of frequency is 75kHz, is mixed ultrasound 60min, is obtained dispersion liquid, will then be dispersed
Liquid, which is placed in refrigerator, is cooled to 4 DEG C, after standing crystallisation by cooling 8h, obtains coolant liquid, then filters coolant liquid, obtains secondary treatment wood
Powder；The calcium chloride solution that secondary treatment wood powder and mass fraction are 30% is placed in No. 2 beakers by weight 1:30, in revolving speed
Under the conditions of 300r/min, 5min is impregnated in mixing, obtains No. 2 soaks, then No. 2 soaks are filtered, obtains and handle wood powder three times；It will
Processing wood powder and sodium alginate solution 1:30 in mass ratio are placed in No. 3 beakers three times, under the conditions of revolving speed is 300r/min, mixing
20min is impregnated, No. 3 soaks is obtained, then No. 3 soaks are filtered, obtains filter cake, then filter cake is placed in baking oven, be in temperature
It is dry to constant weight under the conditions of 110 DEG C, cladding wood powder must be modified；According to parts by weight, by 40 parts of modified cladding wood powders, 50 parts of phenol
Urea formaldehyde, 20 parts of ethyl orthosilicates, 8 parts of silane coupling agents, 8 parts of curing agent are placed in batch mixer, in revolving speed be 500r/min item
Under part, it is stirred 60min, obtains mixed slurry, then injects mixed slurry in mold, under the conditions of temperature is 160 DEG C, Gu
Change 60min, obtain blank, then blank is placed in vacuum-sintering retort, and with the heating of 8 DEG C/min rate, by in-furnace temperature
1100 DEG C are risen to, under the conditions of temperature is 1100 DEG C, after vacuum carbonized 2h, cooling obtains pretreatment blank, will then pre-process base
Material is placed in sintering furnace, and nitrogen is filled with into furnace with 90mL/min rate, and under the conditions of temperature is 1600 DEG C, nitrogen charging high temperature is anti-
After answering 3h, room temperature is down to get the porous wooden ceramic composite with furnace.The timber is poplar.The sodium sulphate saturated solution
The sodium sulphate saturated solution for being 22 DEG C for temperature.The phenolic resin is phenolic resin 2123.The silane coupling agent is silane
Coupling agent KH-550.The curing agent is diethylenetriamine.
Sodium alginate and water 1:50 in mass ratio are placed in No. 1 beaker, stir 20min with glass bar, stands swelling 4h,
No. 1 beaker is placed in digital display again to test the speed in constant temperature blender with magnetic force, is 85 DEG C in temperature, under the conditions of revolving speed is 500r/min, adds
60min is to get sodium alginate solution for thermal agitation mixing；Timber is placed in dryer, under the conditions of temperature is 110 DEG C, drying is extremely
Constant weight obtains desiccated wood, then desiccated wood is placed in pulverizer and is crushed, and crosses the sieve of 70 mesh, obtains wood powder；In parts by weight
Meter, by 40 parts of wood powders, 50 parts of phenolic resin, 20 parts of polyacrylic acid zinc resins, 20 parts of ethyl orthosilicates, 8 parts of silane coupling agents, 8
Part curing agent is placed in batch mixer, under the conditions of revolving speed is 500r/min, is stirred 60min, is obtained mixed slurry, will then mix
It closes in slurry injection mold, under the conditions of temperature is 160 DEG C, solidifies 60min, obtain blank, blank is then placed in vacuum-sintering
In retort, and with the heating of 8 DEG C/min rate, in-furnace temperature is risen to 1100 DEG C, under the conditions of temperature is 1100 DEG C, vacuum charcoal
After changing 2h, cooling obtains pretreatment blank, then pretreatment blank is placed in sintering furnace, and with 90mL/min rate into furnace
It is filled with nitrogen, under the conditions of temperature is 1600 DEG C, after nitrogen charging pyroreaction 3h, it is multiple to get porous wood ceramics to be down to room temperature with furnace
Condensation material.The timber is poplar.The sodium sulphate saturated solution is the sodium sulphate saturated solution that temperature is 22 DEG C.The phenolic aldehyde
Resin is phenolic resin 2123.The silane coupling agent is silane resin acceptor kh-550.The curing agent is diethylenetriamine.
Comparative example: the wood ceramics of Foshan ceramics Co., Ltd production.
1 to 4 gained wood ceramics of example and comparative example product are subjected to performance detection, the specific detection method is as follows:
The mechanical property of wood ceramics is measured using microcomputer controlled electronic universal tester, and the curved of wood ceramics is measured with three-point bending method
Qu Qiangdu, loading direction is vertical with stress surface, span 30mm, and size of sample is 70mm × 5mm × 5mm, movable press head speed
For 0.5mm/min, every group of mechanical test is measured 5 times, takes its average value.The apparent pore of wood ceramics is measured using Archimedes method
Rate.Specific testing result is as shown in table 1:
Table 1: performance detection table
| Detection content | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example |
| Bending strength/MPa | 10.2 | 8.6 | 8.4 | 8.9 | 7.3 |
| Apparent porosity/% | 53 | 44 | 47 | 45 | 36 |
By 1 testing result of table it is found that the porous wooden ceramic composite of present invention gained has high porosity and excellent mechanics
Performance.
Claims (6)
1. a kind of preparation method of the porous wooden ceramic composite, it is characterised in that specific preparation process is as follows:
(1) it by the drying of wood, crushes, crosses the sieve of 80 mesh, obtain wood powder；
(2) wood powder is mixed into immersion with sodium hydroxide solution 1:20~1:30 in mass ratio, filtered, washed, it is dry, it obtains and once locates
Manage wood powder；
(3) single treatment wood powder is mixed into ultrasound, crystallisation by cooling, mistake with sodium sulphate saturated solution 1:20~1:30 in mass ratio
Filter, obtains secondary treatment wood powder；
(4) secondary treatment wood powder is mixed into immersion by weight 1:20~1:30 with calcium chloride solution, filtered, obtain processing wood three times
Powder；
(5) wood powder will be handled three times and mix immersion with sodium alginate solution 1:20~1:30 in mass ratio, filter, it is dry, obtain modification
Coat wood powder；
(6) according to parts by weight, by 30~40 parts of modified cladding wood powders, 40~50 parts of phenolic resin, 10~20 parts of polyacrylic acid
Zinc resin, 10~20 parts of ethyl orthosilicates, 5~8 parts of silane coupling agents, 5~8 parts of curing agent are stirred, injection molding, solidification, very
Sky charing, nitrogen charging pyroreaction, cooling is to get the porous wooden ceramic composite.
2. a kind of preparation method of the porous wooden ceramic composite according to claim 1, it is characterised in that: step (1) institute
Stating timber is poplar, birch, any one in pine or cypress.
3. a kind of preparation method of the porous wooden ceramic composite according to claim 1, it is characterised in that: step (3) institute
Stating sodium sulphate saturated solution is the sodium sulphate saturated solution that temperature is 20~22 DEG C.
4. a kind of preparation method of the porous wooden ceramic composite according to claim 1, it is characterised in that: step (6) institute
Phenolic resin is stated as any one in phenolic resin 2123 or phenolic resin 2127.
5. a kind of preparation method of the porous wooden ceramic composite according to claim 1, it is characterised in that: step (6) institute
Stating silane coupling agent is silane resin acceptor kh-550, any one in silane coupling agent KH-560 or Silane coupling reagent KH-570
Kind.
6. a kind of preparation method of the porous wooden ceramic composite according to claim 1, it is characterised in that: step (6) institute
Stating curing agent is diethylenetriamine, any one in triethylene tetramine or dipropylenetriamine.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319954A (en) * | 2020-12-23 | 2021-08-31 | 阜南县永盛工艺品有限公司 | Processing technology for improving elastic modulus of wood by carrying out sodium alginate modification on wood |
| CN116041087A (en) * | 2023-01-31 | 2023-05-02 | 深圳市赛尔美电子科技有限公司 | Porous carbon atomization matrix, preparation method, electronic atomization core and electronic atomization device |
-
2018
- 2018-05-25 CN CN201810511406.4A patent/CN109896858A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319954A (en) * | 2020-12-23 | 2021-08-31 | 阜南县永盛工艺品有限公司 | Processing technology for improving elastic modulus of wood by carrying out sodium alginate modification on wood |
| CN116041087A (en) * | 2023-01-31 | 2023-05-02 | 深圳市赛尔美电子科技有限公司 | Porous carbon atomization matrix, preparation method, electronic atomization core and electronic atomization device |
| CN116041087B (en) * | 2023-01-31 | 2024-05-14 | 深圳市赛尔美电子科技有限公司 | Porous carbon atomization matrix, preparation method, electronic atomization core and electronic atomization device |
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Application publication date: 20190618 |
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