CN101381855B - Method for preparing linen fiber morph-genetic structure C/Sn or C/Al compound material - Google Patents
Method for preparing linen fiber morph-genetic structure C/Sn or C/Al compound material Download PDFInfo
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- CN101381855B CN101381855B CN2008102316427A CN200810231642A CN101381855B CN 101381855 B CN101381855 B CN 101381855B CN 2008102316427 A CN2008102316427 A CN 2008102316427A CN 200810231642 A CN200810231642 A CN 200810231642A CN 101381855 B CN101381855 B CN 101381855B
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Abstract
The invention discloses a method for preparing a C/Sn or C/Al composite material of a morph-genetic fibrilia structure. Firstly, a nano SnO2 or Al2O3 precursor aqueous solution doped with Fe, La and Ce is prepared, and then fibrilia is taken and is pretreated; secondly, a fibrilia raw material or a crystalline structure C with the morph-genetic fibrilia structure is obtained and is put into the nano oxide precursor aqueous solution for dipping; and thirdly, the C/Sn or C/Al composite material of the morph-genetic fibrilia structure is obtained through high-temperature vacuum reaction hot-pressing sintering and annealing. The preparation method immerses a Sn or Al oxide precursor into or around a cavity of the fibrilia structure and utilizes a reactive hot pressing molding process to ensure that the nano precursor is dehydrated into an oxide which reacts with C and reduces the generated product to obtain metal Sn or Al; and the produced composite material has the characteristics of light mass, vibration elimination and good sound adsorption, antifrictional property and wear resistance, extends the application field of fibrilia composite materials, and has wider application prospect.
Description
Technical field
The invention belongs to technical field of material, relate to a kind of preparation method of matrix material, particularly a kind of flaxen fiber is lost the preparation method of attitude structure C/Sn or C/Al matrix material.
Background technology
At present, known technology with C fiber/non-ferrous metal matrix material of losing the attitude structure has: 1) material Leader [J], " the losing the research theory and the progress of attitude material " of 2006 (10): 5～7 publications; 2) Chinese material Conference Papers summary collection [C] in 2004, the preparation and the mechanical property research of the aluminium alloy/wood ceramics matrix material of 2004:421 publication "; 3) number of patent application CN02137503.8 " preparation method of ecological ceramic, metal composite " (publication number CN1403620, open day on March 19th, 2003).
More than disclosed technology relate generally to natural fibers such as wood, bamboo, stalk and lose the attitude structures and prepare C fiber ceramics matrix material, or preliminary study is added aluminium alloy in losing attitude structure C fiber/ceramic composite.Do not relate to and utilize flaxen fiber something lost attitude structure to prepare C fiber/non-ferrous metal based composites, the C fiber/non-ferrous metal matrix material that especially utilizes the preparation of reaction hot-pressing sintering to have flaxen fiber something lost attitude structure does not appear in the newspapers.Therefore, the research and development flaxen fiber is lost attitude structure/non-ferrous metal matrix material and can be improved and give non-ferrous metal new performance, makes it have light weight, weakening, sound-absorbing and the good characteristics of anti-friction wear-resistant, expands its Application Areas.
Summary of the invention
The object of the present invention is to provide a kind of flaxen fiber to lose the preparation method of attitude structure C/Sn or C/Al matrix material, the employing flaxen fiber is a mould material, by the dipping nano tin dioxide and the aluminum oxide precursor aqueous solution, in conjunction with high-temperature vacuum reaction hot-pressing sintering, obtain C fiber/non-ferrous metal matrix material that a kind of flaxen fiber is lost the attitude structure.
The technical solution adopted in the present invention is, a kind ofly loses the C/Sn of attitude structure or the preparation method of C/Al matrix material based on flaxen fiber, specifically carries out according to the following steps:
Step 1: preparation nano hybrid SnO
2Or Al
2O
3The precursor aqueous solution
Get SnCl
4The aqueous solution or AlCl
3The aqueous solution, dropping ammonia produces chemical coprecipitation, obtains pure nano SnO
2Or Al
2O
3The precursor aqueous solution,
Or, get FeCl respectively
3, LaCl
3And CeCl
3In the aqueous solution a kind of, two or three, institute water intaking solution is added SnCl
4In the aqueous solution, dropping ammonia produces chemical coprecipitation, obtains containing the nano SnO that mixes of doped element
2The precursor aqueous solution, the atomic ratio of controlling Sn and doped element Fe in this aqueous solution, La, Ce is respectively 5:0～2,5:0～3 and 5:0～2,
Or, get FeCl respectively
3, LaCl
3And CeCl
3In the aqueous solution a kind of, two or three, institute water intaking solution is added AlCl
3In the aqueous solution, dropping ammonia produces chemical coprecipitation, and what obtain containing doped element mixes nanometer Al
2O
3The precursor aqueous solution, the atomic ratio of controlling Al and doped element Fe in this precursor aqueous solution, La, Ce is respectively 5:0～2,5:0～3 and 5:0～2;
Step 2: flaxen fiber is carried out pre-treatment
Get flaxen fiber, come unstuck, alkaline purification and dry, obtain fibrilia raw material,
Or, get flaxen fiber, carry out alkaline purification and dry, obtain fibrilia raw material,
Or, get flaxen fiber, be dried, pressed compact and high temperature cabonization, obtain having the crystalline structure C that flaxen fiber is lost the attitude structure,
Or, get flaxen fiber, with its come unstuck, dry, pressed compact and high temperature cabonization, obtain having the crystalline structure C that flaxen fiber is lost the attitude structure;
Step 3: dip treating
With fibrilia raw material that obtains after step 2 pre-treatment or crystalline structure C, immerse the nano SnO that step 1 makes with flaxen fiber something lost attitude structure
2Or Al
2O
3In the precursor aqueous solution, dipping 0.5h～1h takes out, and placing temperature is 60 ℃～105 ℃ environment, dry 1h～4h, and dipping and dry repeatedly is 5:1～5 until the weight ratio of Sn or Al element and flaxen fiber or C fiber, is got the raw materials ready;
Step 4: high-temperature vacuum reaction hot-pressing sintering
With getting the raw materials ready that step 3 obtains; under room temperature, 20MPa～100MPa pressure, be pressed into blank; this blank is put into vacuum hotpressing stove or nitrogen protection hot pressing furnace; in temperature is that 650 ℃～750 ℃, pressure are in the environment of 1MPa～5MPa, insulation 0.5h～2h, reaction sintering moulding; take out; placing temperature is 200 ℃～300 ℃ environment, and annealing 2h～4h makes and has C/Sn or the C/Al matrix material that flaxen fiber is lost the attitude structure.
Feature of the present invention also is,
Coming unstuck in the step 2 wherein adopted the retting technology in the existing conventional weaving, and flaxen fiber is come unstuck fully or not exclusively comes unstuck.
Alkaline purification in the step 2 wherein, it is that the NaOH aqueous solution of 5wt%～25wt% soaks 10h～30h that flaxen fiber is placed concentration, takes out, and is washed with water to neutral pH=7.
Drying in the step 2 wherein, it is 60 ℃～105 ℃ environment that flaxen fiber is placed temperature, insulation 2h～4h.
Pressed compact in the step 2 wherein is pressed into blank with flaxen fiber under room temperature, 20MPa～100MPa pressure.
High temperature cabonization in the step 2 wherein, it is in 1100 ℃～1200 ℃ the vacuum oven that the flaxen fiber blank is placed temperature, insulation 0.5h～2h.
Flaxen fiber is selected the raw ramie and the degummed ramie of ramee, flax fiber, hemp fibre or sisal fibers for use.
The inventive method is lost the attitude structure based on flaxen fiber, prepares the preparation method of C fiber/non-ferrous metal matrix material by vacuum reaction, hot pressed sintering, has following characteristics:
1. utilize Sn or Al oxide compound precursor and the flaxen fiber of chemical coprecipitation preparation or have the crystalline state C dipping that flaxen fiber is lost the attitude structure, make the nanometer precursor immerse flaxen fiber or have flaxen fiber to lose the crystalline state C fibrous texture cavity of attitude structure interior or on every side.
2. utilize the reaction hot-pressing moulding process to make the dehydration of nanometer precursor obtain metal Sn or Al for oxide compound and with C reaction reduction, preparation has C/Sn or the C/Al matrix material that flaxen fiber is lost the attitude structure.
3. the C fiber/non-ferrous metal matrix material for preparing has light weight, the characteristics that weakening, sound-absorbing and anti-friction wear-resistant are good, and application prospect is more wide.
Embodiment
The present invention is described in detail below in conjunction with embodiment.
Preparation method of the present invention is applicable to the raw ramie and the degummed ramie of ramee, flax fiber or sisal fibers.At first prepare nano hybrid oxide compound precursor, flaxen fiber is carried out pre-treatment, then, the flaxen fiber after the pre-treatment is placed nano hybrid oxide compound precursor dipping, drying; Afterwards, the vacuum reaction Thermocompressed sintering and forming obtains having the C/ non-ferrous metal matrix material that flaxen fiber is lost the attitude structure.This method is specifically carried out according to the following steps:
Step 1: preparation nano hybrid SnO
2Or Al
2O
3The precursor aqueous solution
Get SnCl
4The aqueous solution or AlCl
3The aqueous solution, dropping ammonia produces chemical coprecipitation, obtains pure nano SnO
2Or Al
2O
3The precursor aqueous solution,
Or, get FeCl respectively
3The aqueous solution, LaCl
3The aqueous solution and CeCl
3In the aqueous solution a kind of, two or three, institute water intaking solution added obtains SnCl in addition
4In the aqueous solution, dropping ammonia produces chemical coprecipitation, obtains containing the nano hybrid SnO of doped element
2The precursor aqueous solution, the atomic ratio of Sn and doped element Fe, La, Ce is respectively 5:0～2,5:0～3 and 5:0～2 in this precursor aqueous solution,
Or, get FeCl respectively
3The aqueous solution, LaCl
3The aqueous solution and CeCl
3In the aqueous solution a kind of, two or three, institute water intaking solution added obtains AlCl in addition
3In the aqueous solution, dropping ammonia produces chemical coprecipitation, obtains containing the nano hybrid Al of doped element
2O
3The precursor aqueous solution, the atomic ratio of Al and doped element Fe, La, Ce is respectively 5:0～2,5:0～3 and 5:0～2 in this precursor aqueous solution;
Step 2: flaxen fiber is carried out pre-treatment
Get natural flaxen fiber, adopt the retting technology in the existing conventional weaving, flaxen fiber is come unstuck fully or not exclusively comes unstuck, and then, placing concentration is that the NaOH aqueous solution of 5wt%～25wt% soaks 10h～30h, take out, being washed with water to neutrality (pH=7), is under 60～105 ℃ the condition in temperature, dry 2h～4h, obtain fibrilia raw material
Or, get natural flaxen fiber, be placed on concentration and be in the NaOH aqueous solution of 5wt%～25wt% and soak 10h～30h, take out, be washed with water to neutrality (pH=7), be that dry 2h～4h obtains fibrilia raw material under 60 ℃～105 ℃ the condition in temperature,
Or, get natural flaxen fiber, be placed on temperature and be under 60 ℃～105 ℃ the condition, dry 2h～4h then, is pressed into blank under room temperature, 20MPa～100MPa pressure, it is 1100 ℃～1200 ℃ vacuum oven that this blank is put into temperature, insulation 0.5h～2h obtains having the crystalline structure C that flaxen fiber is lost the attitude structure
Or, get natural flaxen fiber, adopt the retting technology in the existing conventional weaving, flaxen fiber is come unstuck fully or not exclusively comes unstuck, placing temperature is under 60～105 ℃ the condition, dry 2h～4h, then, be pressed into blank under room temperature, 20MPa～100MPa pressure, it is 1100 ℃～1200 ℃ vacuum oven that this blank is put into temperature, insulation 0.5h～2h obtains having the crystalline structure C that flaxen fiber is lost the attitude structure;
Natural flaxen fiber is selected the raw ramie and the degummed ramie of ramee, flax fiber, hemp fibre or sisal fibers for use.
Step 3: dip treating
With fibrilia raw material that obtains after step 2 pre-treatment or crystalline structure C, immerse the nano SnO that step 1 makes with flaxen fiber something lost attitude structure
2Or Al
2O
3In the precursor aqueous solution, dipping 0.5h～1h takes out, and placing temperature is 60 ℃～105 ℃ environment, dry 1h～4h, and dipping and dry repeatedly is 5:1～5 until the weight ratio of Sn or Al element and flaxen fiber or C fiber, is got the raw materials ready;
Step 4: high-temperature vacuum reaction hot-pressing sintering
With getting the raw materials ready that step 3 obtains; under room temperature, 20MPa～100MPa pressure, be pressed into blank; this blank is put into vacuum hotpressing stove or nitrogen protection hot pressing furnace; in temperature is that 650 ℃～750 ℃, pressure are in the environment of 1MPa～5MPa, insulation 0.5h～2h, reaction sintering moulding; take out; placing temperature is 200 ℃～300 ℃ environment, and annealing 2h～4h makes and has C/Sn or the C/Al matrix material that flaxen fiber is lost the attitude structure.
Embodiment 1
Get SnCl respectively
4The aqueous solution and FeCl
3The aqueous solution mixes, and dropping ammonia produces chemical coprecipitation, obtains containing the nano hybrid oxide S nO of Fe
2The precursor aqueous solution, wherein the atomic ratio of Sn and Fe is 5:1.The ramee (degummed ramie) that comes unstuck fully is trimmed to the length of 5mm～10mm, puts into the 5wt%NaOH aqueous solution and soak 30h, take out, be washed to pH and be neutral (pH=7), then, placing temperature is 60 ℃ vacuum environment, dry 4h obtains fibrilia raw material; This fibrilia raw material is immersed in nano-oxide precursor aqueous solution, and dipping 1h takes out, and placing temperature is 60 ℃ environment, dry 4h, and repeated impregnations and drying are 5:4 until Sn element and ramee weight ratio, make and get the raw materials ready.This is got the raw materials ready after being pressed into base under room temperature, the 50MPa pressure, putting into temperature and be 650 ℃, pressure is the vacuum hotpressing stove of 5MPa, insulation 2h, Thermocompressed sintering and forming, take out, placing temperature is 200 ℃ environment, and annealing 4h obtains containing the C/Sn matrix material that flaxen fiber is lost the attitude structure that has of Fe.
Embodiment 2
Get AlCl respectively
3The aqueous solution and LaCl
3The aqueous solution mixes, and dropping ammonia produces chemical coprecipitation, obtains containing the nano hybrid oxide compound Al of La
2O
3The precursor aqueous solution, the atomic ratio of Al and La is 5:3 in this aqueous solution.The sisal hemp raw ramie that does not come unstuck is trimmed to the long section of 10mm～20mm, puts into 25wt%NaOH aqueous solution soaking 10h, be washed to pH and be neutral (pH=7), placing temperature is 105 ℃ environment, dry 1h, then, immerse in the nano-oxide precursor aqueous solution, dipping 1h takes out, and places 105 ℃ environment, dry 1h, repeated impregnations and drying are 5:5 until the weight ratio of Al and flaxen fiber, make and get the raw materials ready.This is got the raw materials ready after being pressed into base under room temperature, the 100MPa pressure, putting into temperature and be 700 ℃, pressure is the vacuum hotpressing stove of 5MPa, insulation 0.5h, Thermocompressed sintering and forming, take out, placing temperature is 300 ℃ environment, and annealing 2h obtains containing the C/Al matrix material that flaxen fiber is lost the attitude structure that has of La.
Embodiment 3
Get AlCl respectively
3, LaCl
3And CeCl
3The aqueous solution mixes, and dropping ammonia produces chemical coprecipitation, obtains containing the nano hybrid oxide compound Al of La and Ce
2O
3The precursor aqueous solution, the atomic ratio of Al and La and Ce is respectively 5:1 and 5:1 in this aqueous solution.The sisal hemp raw ramie that does not come unstuck is trimmed to the long section of 5mm～10mm, puts into 15wt%NaOH aqueous solution soaking 20h, be washed to pH and be neutral (pH=7), placing temperature is 85 ℃ vacuum environment, dry 3h, then, immerse in the nano-oxide precursor aqueous solution, dipping 0.75h takes out, and places 85 ℃ vacuum environment, dry 3h, repeated impregnations and drying are 5:3 until the weight ratio of Al and flaxen fiber, make and get the raw materials ready.This is got the raw materials ready after being pressed into base under room temperature, the 75MPa pressure, putting into temperature and be 700 ℃, pressure is the vacuum hotpressing stove of 3MPa, insulation 1.25h, Thermocompressed sintering and forming, take out, placing temperature is 250 ℃ environment, and annealing 3h obtains containing the C/Al matrix material that flaxen fiber is lost the attitude structure that has of La and Ce.
Embodiment 4
Get SnCl respectively
4, FeCl
3And CeCl
3The aqueous solution mixes, and dropping ammonia produces chemical coprecipitation, makes nano hybrid oxide S nO
2The precursor aqueous solution, the atomic ratio of Sn and Fe, Ce is respectively 5:1.5 and 5:2 in this aqueous solution.Flax raw ramie that does not come unstuck is trimmed to the long section of 15mm～20mm, and placing temperature is 95 ℃ environment, dry 2h, after being pressed into base under room temperature, the 65MPa pressure, put into temperature and be 1100 ℃ vacuum oven, insulation 2h obtains having the crystalline structure C that flaxen fiber is lost the attitude structure, take out, this crystalline structure C is immersed the nano-oxide precursor aqueous solution, and dipping 0.5h takes out, placing temperature is 60 ℃ vacuum environment, dry 4h.Flood repeatedly and drying; weight ratio until Sn element and C fiber is 5:3; got the raw materials ready; this is got the raw materials ready, and to put into temperature be that 650 ℃, pressure are the nitrogen protection hot pressing furnace of 1MPa, insulation 2h, reaction hot-pressing sinter molding; take out; in temperature was 200 ℃ environment, annealing 2h obtained containing the C/Sn matrix material that flaxen fiber is lost the attitude structure that has of Fe, Ce doped element.
Embodiment 5
Get AlCl respectively
3, FeCl
3And LaCl
3The aqueous solution mixes, and dropping ammonia produces chemical coprecipitation, makes nano hybrid oxide compound Al
2O
3The precursor aqueous solution, the atomic ratio of Al and doped element Fe, La is respectively 5:1 and 5:1.5 in this aqueous solution.The hemp (degummed ramie) of coming unstuck entirely is trimmed to the long section of 25mm～40mm, and to place temperature be 85 ℃ vacuum environment, dry 3h, then, after being pressed into base under room temperature, the 100MPa pressure, put into temperature and be 1200 ℃ vacuum oven, insulation 0.5h, obtain having the crystalline structure C that flaxen fiber is lost the attitude structure, take out, this crystalline structure C is immersed in the nano-oxide precursor aqueous solution, dipping 1h, take out, placing temperature is 105 ℃ environment, dry 1h.Flood repeatedly and drying; weight ratio until Al element and C fiber is 5:1; make and get the raw materials ready; this is got the raw materials ready, and to put into temperature be that 700 ℃, pressure are the nitrogen protection hot pressing furnace of 5MPa, insulation 0.5h, reaction hot-pressing sinter molding; take out; in temperature was 250 ℃ environment, annealing 2h obtained containing the C/Al matrix material that flaxen fiber is lost the attitude structure that has of Fe, La.
Embodiment 6
Get AlCl respectively
3, FeCl
3, LaCl
3And CeCl
3The aqueous solution mixes, and dropping ammonia produces chemical coprecipitation, makes nano hybrid oxide compound Al
2O
3The precursor aqueous solution, the atomic ratio of Al and doped element Fe, La, Ce is respectively 5:2,5:2 and 5:1 in this aqueous solution.The hemp (degummed ramie) of coming unstuck entirely is trimmed to the long section of 15mm～30mm, and to place temperature be 75 ℃ vacuum environment, dry 3.5h, then, after being pressed into base under room temperature, the 100MPa pressure, put into temperature and be 1150 ℃ vacuum oven, insulation 1.25h, obtain having the crystalline structure C that flaxen fiber is lost the attitude structure, take out, this crystalline structure C is immersed in the nano-oxide precursor aqueous solution, dipping 3h, take out, placing temperature is 85 ℃ vacuum environment, dry 3h.Flood repeatedly and drying; weight ratio until Al element and C fiber is 5:2; make and get the raw materials ready; this is got the raw materials ready, and to put into temperature be that 700 ℃, pressure are the nitrogen protection hot pressing furnace of 3MPa, insulation 1.25h, reaction hot-pressing sinter molding; take out; in temperature was 175 ℃ environment, annealing 3h obtained containing the C/Al matrix material that flaxen fiber is lost the attitude structure that has of Fe, La, Ce.
The C/ non-ferrous metal composite that adopts the inventive method to prepare has light weight, weakening, sound-absorbing and the good characteristics of anti-friction wear-resistant, has expanded the application of flaxen fiber composite, has more wide application prospect.
Claims (7)
1. the preparation method based on the C/Sn matrix material of flaxen fiber something lost attitude structure is characterized in that, specifically carries out according to the following steps:
Step 1: preparation nano hybrid SnO
2The precursor aqueous solution
Get SnCl
4The aqueous solution, dropping ammonia produces chemical coprecipitation, obtains pure nano SnO
2The precursor aqueous solution,
Or, get FeCl respectively
3, LaCl
3And CeCl
3In the aqueous solution a kind of, two or three, institute water intaking solution is added SnCl
4In the aqueous solution, dropping ammonia produces chemical coprecipitation, obtains containing the nano SnO that mixes of doped element
2The precursor aqueous solution, the atomic ratio of controlling Sn and doped element Fe in this aqueous solution, La, Ce is respectively 5: 0～2,5: 0～3 and 5: 0～2;
Step 2: flaxen fiber is carried out pre-treatment
Get flaxen fiber, come unstuck, alkaline purification and dry, obtain fibrilia raw material,
Or, get flaxen fiber, carry out alkaline purification and dry, obtain fibrilia raw material,
Or, get flaxen fiber, be dried, pressed compact and high temperature cabonization, obtain having the crystalline structure C that flaxen fiber is lost the attitude structure,
Or, get flaxen fiber, with its come unstuck, dry, pressed compact and high temperature cabonization, obtain having the crystalline structure C that flaxen fiber is lost the attitude structure;
Step 3: dip treating
With fibrilia raw material that obtains after step 2 pre-treatment or crystalline structure C, immerse the nano SnO that step 1 makes with flaxen fiber something lost attitude structure
2In the precursor aqueous solution, dipping 0.5h～1h takes out, and placing temperature is 60 ℃～105 ℃ environment, dry 1h～4h, and dipping and dry repeatedly is 5: 1～5 until the weight ratio of Sn element and flaxen fiber or C fiber, is got the raw materials ready;
Step 4: high-temperature vacuum reaction hot-pressing sintering
With getting the raw materials ready that step 3 obtains; under room temperature, 20MPa～100MPa pressure, be pressed into blank; this blank is put into vacuum hotpressing stove or nitrogen protection hot pressing furnace; in temperature is that 650 ℃～750 ℃, pressure are in the environment of 1MPa～5MPa, insulation 0.5h～2h, reaction sintering moulding; take out; placing temperature is 200 ℃～300 ℃ environment, and annealing 2h～4h makes and has the C/Sn matrix material that flaxen fiber is lost the attitude structure.
2. according to the described preparation method of claim 1, it is characterized in that coming unstuck in the described step 2 adopted the retting technology in the existing conventional weaving, and flaxen fiber is come unstuck fully or not exclusively comes unstuck.
3. according to the described preparation method of claim 1, it is characterized in that, the alkaline purification in the described step 2, it is that the NaOH aqueous solution of 5wt%～25wt% soaks 10h～30h that flaxen fiber is placed concentration, takes out, and is washed with water to neutral pH=7.
4. according to the described preparation method of claim 1, it is characterized in that, the drying in the described step 2, it is 60 ℃～105 ℃ environment that flaxen fiber is placed temperature, insulation 2h～4h.
5. according to the described preparation method of claim 1, it is characterized in that the pressed compact in the described step 2 is pressed into blank with flaxen fiber under room temperature, 20MPa～100MPa pressure.
6. according to the described preparation method of claim 1, it is characterized in that, the high temperature cabonization in the described step 2, it is in 1100 ℃～1200 ℃ the vacuum oven that the flaxen fiber blank is placed temperature, insulation 0.5h～2h.
7. according to claim 1,2,3,4,5 or 6 described preparation methods, it is characterized in that described flaxen fiber is selected the raw ramie of ramee, flax fiber, hemp fibre or sisal fibers for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102316427A CN101381855B (en) | 2008-10-09 | 2008-10-09 | Method for preparing linen fiber morph-genetic structure C/Sn or C/Al compound material |
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|---|---|---|---|
| CN2008102316427A CN101381855B (en) | 2008-10-09 | 2008-10-09 | Method for preparing linen fiber morph-genetic structure C/Sn or C/Al compound material |
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| CN101838146B (en) * | 2010-02-09 | 2012-05-30 | 西安工程大学 | Preparation method of hemp fabric structure biomorphic ceramic composite material |
| CN102071374B (en) * | 2010-11-05 | 2012-11-21 | 西安工程大学 | Method for preparing hemp fabric/Sn metal composite through powder metallurgy |
| CN112273116B (en) * | 2020-10-19 | 2023-02-14 | 西安工程大学 | Preparation method of morph-genetic structure carbon-modified sunshade net film material |
| CN115911382B (en) * | 2022-11-29 | 2023-09-05 | 江阴普朗克科技有限公司 | Self-supporting SnO of foam nickel 2 Nano array@porous carbon fiber composite material and preparation method and application thereof |
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