CN103506095A - Preparation method of kendir fiber/expanded graphite composite fiber adsorbing material - Google Patents
Preparation method of kendir fiber/expanded graphite composite fiber adsorbing material Download PDFInfo
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- 239000000835 fiber Substances 0.000 title claims abstract description 144
- 239000002131 composite material Substances 0.000 title claims abstract description 65
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 48
- 239000010439 graphite Substances 0.000 title claims abstract description 48
- 239000000463 material Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910001593 boehmite Inorganic materials 0.000 claims abstract description 9
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims abstract description 9
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 8
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- 238000005406 washing Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
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- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
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Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses a preparation method of a kendir fiber/expanded graphite composite fiber adsorbing material. The ultrafiltration water-adsorbing material utilizes cardiac glycoside, flavone, amino acid and other components in the kendir, and has the functions of relieving a cough, relieving asthma and lowering the blood pressure. On the premise of treating hypertension, hyperlipemia, coronary heart disease and other magical medicinal values, the kendir fiber used as a matrix raw material and the expanded graphite are synthesized into a composite fiber, and the kendir fiber/expanded graphite composite fiber and boehmite mainly comprising aluminum hydroxide are prepared into a bioactive adsorbing material. The ultrafiltration water-adsorbing material can generate positive charges, and adsorb negatively charged microbes and bacteriophages, thereby achieving the goal of almost adsorbing all the microbes and bacteriophages in water. Especially after a low-current low-voltage external power source is switched on, the water purification effect is better. The adsorbing material disclosed by the invention has the characteristics of accessible materials, low manufacturing cost, low requirements for the working environment and high adsorbability, and can be widely used in the fields of medicine, veterinary medicine, food industry, water and solution purification related to the microbial process, and the like.
Description
Technical field
The invention belongs to sorbing material technical field, be specifically related to a kind of preparation method of apocynum fibre/expanded graphite composite fibre sorbing material.
Background technology
Bluish dogbane is commonly called as milk grass, belonging to Apocynaceae. apocynum fibre is the bast fiber in string, it has stretches and the heavy wall long cell of closed at both ends, fibrillation is a kind of high molecular polymer. fiber color is subject to the impact of dipping fermentation to have very big-difference, general gray or canescence, staple in bulk gloss is as silk. the long 50 mm left and right of ultimate fibre, fineness is in 18u m left and right, fiber is more soft, ultimate fibre is definitely powerful high, than the large 5--6 of cotton fiber doubly, the percentage elongation of fiber is little, only have 3 left and right. the refractive index of bluish dogbane and birefringence are all very large, fibrous inside molecular structure is tight, degree of orientation is high. can spin more than 60 yarns, good spins 160, it is weaving, the plant material resource that paper industry is rare, by weaving department, be described as by " hat of wild fiber ", there are vast potential for future development and considerable economic benefit. in addition, because bluish dogbane contains cardiac glycoside, flavones, the compositions such as amino acid, there is cough-relieving, relieving asthma and hypotensive function. to treatment hypertension, high fat of blood, coronary heart disease etc. have certain curative effect, thereby fabric has magical medical value, its therapeutic action and health-care efficacy are expounded through peer review by Chinese Medical Association, be used to make clothes, health products and bedding. the health product of bluish dogbane and other fiber blend is succeeded in developing at present, be subject to consumer's welcome.
Bluish dogbane is a kind of rare wild plant, and stem of Folium Apocyni Veneti skin is a kind of good fibrous raw material, and fiber finer and growing is a kind of more satisfactory new natural textile raw material, therefore be described as " king of wild fiber ".Bluish dogbane abound with in Lop Nur, Xinjiang and periphery because gaining the name Lop Nur, in Chinese Huaihe River, the Qinling Mountains, to the north of Kun Lun Mountain, each province has bluish dogbane to distribute.Spread out harl in the Wild fiber plant of having found, best in quality, it is China's natural fiber newly developed in recent years, except having the powerful high denominator of the Hao ﹑ of Xi Shi ﹑ Tou Qi ﹑ poisture-penetrability of general bast-fibre, also there is the Some features of self, bluish dogbane not only has good wearability, but also there is good medical health care function, the good raw material of bluish dogbane or papermaking, building, also can do fuel and feed, and its fiber is the senior raw material of textile industry.
Apocynum fibre has good biocidal property, Candida albicans, staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa etc. are had to obvious inhibitory action, skin disease, bedsore, eczema and gynecological disease are had to good preventive and therapeutic effect, the diseases such as flu, chronic bronchitis are also had to certain preventive and therapeutic effect simultaneously, apocynum fibre has the ability to function of certain antibacterial bacteriostatic performance, especially Pseudomonas aeruginosa more intense to Grain stain mushroom; The effects such as apocynum fibre has step-down, relievings asthma, reducing blood lipid, bluish dogbane content is the effects such as more than 35% clothes decoration has step-down, relievings asthma, reducing blood lipid, can improve significantly clinical symptoms; Apocynum fibre is natural far-infrared emission material, and far infrared makes bluish dogbane underwear have thermal effect, and its warmth retention property is 2 times of full bluish dogbane underwear at 8 ℃ below; The cross section of apocynum fibre is the ellipse of with groove, and there is an oval-shaped hole centre, makes it have absorbing sweat, ventilative function, is a kind of rare natural fiber material; Apocynum fibre has stronger ultra-violet radiation resisting penetrability, through experimental test, tests: the penetrance of ultraviolet radiation is only 2%.
The 6th, China's gross amount of water resources 2.8 tcm ，Ju world.China's water resources ownership per capita only has 2150m3, is equivalent to 1/4 of the per capita water yield in the world.When to the year two thousand thirty, Chinese population reaches 16Yi peak, water resource only has 1760m3 per capita, accepted per capita lower than " short water supply " country of 1700m3 in the world by becoming.
According to China Environmental State Bulletin, in 752 emphasis sections of 2002 annual Haihe River, the Liaohe River, Huaihe River, the Yellow River, Song Hua River, the Changjiang river, the large water system monitoring of the Zhujiang River seven, I ~ III class water quality accounts for 29.5%, and IV class water quality accounts for 17.7%, and V class and bad V class water quality account for 52.8%.The monitoring in the Dui532Tiao of Ministry of Water Resources river shows that ，You436Tiao river is subject to the water quality severe contamination of section, ，You13Ge city in the section, 15 main big cities of river, pollution ，Qi great river warp in various degree.
What lake, the whole nation reached eutrophication water reaches 66%, and Main Lakes nitrogen and phosphorus pollution is heavier, causes eutrophication problem outstanding, and blue-green algae is spread unchecked and is on the rise, and has a strong impact on the development of culture fishery and tourist industry, harm ecological environment.
Quality of groundwater also allows of no optimist.According to China's Evaluation of Groundwater Resources in 2003 and strategic issue, studies show that have 63% the groundwater resources can be for directly drinking, 17% is drinkable after suitable processing, and 8% need to just can drink after special disposal.12% is not suitable for drinking but can be used as industrial or agricultural resource of water supply, the whole nation approximately has the underground water pollution of half city proper serious, main contamination index comprises salinity, total hardness, nitrate, nitrite, ammonia nitrogen, iron, manganese, chloride, sulfate, fluoride, and pH value etc. is all the trend of exceeding standard.Approximately there are more than 7,000 ten thousand people in the whole nation still at the underground water of drinking fluorine and exceeding standard, and 3.6 hundred million people in the countryside are not drunk the drinking water that meets national standard.
In recent years, the Chinese government has started the improvement of drinking water pollution comprehensively.Especially by environmental protection and the energy-conservation state basic policy that rises to, the improvement of drinking water is as wherein important content, will, ，Cong water source, running water are produced more over a long time from now on, water facilities purifies to water tip, carry out comprehensively administering and transforming.
At present, apocynum fibre is with its excellent pharmacological action and wearability, obtained development and application widely, before 300 years, the people are just made into apocynum fibre clothes or make quilt, sheet, with it, be of illnesses and fitness, at present, the various dogbane teas that the process technology that employing section emulates the advanced and traditional tea-manufacturing technology are produced, become a kind of daily tea-drinking that can drink at any time, in recent years, the relevant scholar of Tianjin hundred benefit that health-caring articles for use Co., Ltds and Donghua University, University Of Qingdao has done much in depth research to the einnehmen function of apocynum fibre.But the technology that application is relevant utilizes composite fibre that apocynum fibre is base material to prepare the method for filtering material and the product aspect of apocynum fibre sorbing material have not been reported.The present invention utilizes innovative technology to develop large flow, does not stop up, long-acting, and the filtration new material of low energy consumption brings brand-new technology platform by administering to drinking water pollution.Hydrone and bacterium are very small, and people's bore hole cannot see, for convenient, the nanometer of generally take marks its size as unit.But under the microscope, the size of hydrone and bacterium is far different.The diameter of single hydrone is far smaller than 1 nanometer, and the size of most of bacteriums has hundreds of nanometer.For filtering the adsorbent at water source, generally microorganism and bacteriophage all can not be adsorbed to fall at present, and can only in acid and neutral environment, work.
Summary of the invention
Order of the present invention be a kind of biologically active bodies of design surpass drainage sorbing material, this drainage sorbing material that surpasses is usingd apocynum fibre as base starting material and the synthetic composite fibre of expanded graphite, uses apocynum fibre and the composite fibre of expanded graphite and the boehmite manufacture that main component is aluminium hydroxide to form sorbing material.This drainage sorbing material that surpasses can produce positive charge, and microorganism and bacteriophage that can adsorption band negative electrical charge, reach most microorganism and bacteriophage in adsorbed water.
For achieving the above object, the technical solution used in the present invention is as follows:
The preparation method of apocynum fibre/expanded graphite composite fibre sorbing material of the present invention, comprises the steps:
(1) producing apocynum fibre: divide → pickling → washing → mono-of raw ramie boils → bis-boil → wash → beat fibre → bleaching → pickling → washing → dehydration → oven dry, obtain apocynum fibre, standby; (Wu Hongling ，Jiang Shao army, Li Zhizhong, Zhang Xinpu, Xu Shunji, the research of apocynum degumming technique, Lanzhou University of Science & Technology's journal, the 05th phase in 2004);
(2) get in proportion expanded graphite and add deionized water, through sonic oscillation, form the mixed liquor A of expanded graphite;
(3) mixed liquor A is cooled to after 0 ℃, in ice-water bath, add Na0H, urea, apocynum fibre, stirs and makes mixed liquid B;
(4) by mixed liquid B freezing 1-3 hour that deposits at the temperature of-15 ℃, then the mixed liquor of freezing state is put at room temperature and thawed, stir 25-35 minute, make apocynum fibre and expanded graphite and form homogeneous phase mixed liquor C;
(5) mixed liquor C is spurted into the H of high-speed stirred
2s0
4in solution, remove unnecessary Na0H, obtain the fibrous apocynum fibre of hygrometric state and expanded graphite composite fibre; With deionized water rinsing composite fibre, until the pH value of washing lotion reaches 7, composite fibre at room temperature dries naturally, then dries in baking oven, obtains dry composite fiber;
(6) with silica suspension, through Hydrothermal Synthesis, process and (specifically how to process?) composite fibre; Obtain the coated composite fibre of silica tubulose;
(7) the coated composite fibre of the silica tubulose of gained is evenly mixed with boehmite powder; The mass ratio of the two is how many: 1/100-1/2;
(8) with sinusoidal ac, mixture is carried out to activation processing; After activated processing, non-spherical aluminium hydroxide bulky grain is attached to composite fibre surface, forms the larger sorbing material of eyelet.
Expanded graphite/apocynum fibre weight ratio 1/10000 ~ 3/1000 described in step (2), the sonic oscillation time is 10-20 minute;
The part by weight of Na0H, urea and the apocynum fibre adding in step (3) is 3:2:2, add the gross weight of three kinds of materials account for mixed liquid B weight 14%, it is 10-20 minute that preparation mixed liquid B mixing time is made in described stirring.
H described in step (5)
2s0
4the concentration of solution is 3-7wt%.
Described in step (5), composite fibre at room temperature dries 2 days naturally, then dries 8-12 minute in the baking oven of 80 ℃, obtains dry composite fiber.
Described in step (6), silica suspension concentration is 1%.
The middle sinusoidal ac with 50 hertz frequencies of step (8) carries out activation processing to mixture, and (mixture is directly put into the groove with pole plate, the spacing 10-20 centimetre of pole plate.Pole plate produces AC field to material production activating effect after loading alternating current between pole plate).
Above material clamps through micropore mold, prepare various type shape filters, the above mould is cast, cup type, square, round according to the requirement of the filter type shape of required preparation, the mould of the various shapes such as sheet type, and the various shape filters of required preparation can meet extensive filtering demand.
The drainage sorbing material that surpasses of the present invention is usingd apocynum fibre as base starting material and the synthetic composite fibre of expanded graphite, uses apocynum fibre and the composite fibre of expanded graphite and the boehmite manufacture that main component is aluminium hydroxide to form sorbing material.This drainage sorbing material that surpasses can produce positive charge, and microorganism and bacteriophage that can adsorption band negative electrical charge, reach most microorganism and bacteriophage in adsorbed water.Particularly lead to little electric current, after low-voltage external power source, purifying water effect is better.
Apocynum fibre/expanded graphite composite fibre prepared by the present invention will provide a kind of over drainage sorbing material can eliminate bacterium in water fast, and can not stop up, and will bring a kind of simple and easy, cheap process for purifying water for social demand.Compare with current water filtration sorbing material, bioactive water filtering adsorbing material of the present invention has the advantages that material is easy to get, cheap, working environment requirement is low and absorption property is high, in medical science, veterinary science, food industry and the field such as the water relevant with microbial process and solution purification, will be used widely.The space that can develop is larger, and market prospects are wide.
Adopt the filter of embodiment 1, under pressure 0 .5mpa, filter the treatment effect of river as following table.
Table 1 water sample purifies the content of other harmful substance of front and back and removes rate (unit: mgL
-1)
Table 2 water sample purifies front and back microbiological indicator test result and removes rate
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.
Embodiment 1
The technique that bluish dogbane raw ramie was boiled → bis-boil → washed → beat fibre → bleaching → pickling → washing → dehydration → oven dry through undue → pickling → washing → mono-is produced apocynum fibre, stand-by.Take weight 0.01g expanded graphite and put into 250mL beaker, add 100mL deionized water, after sonic oscillation 15 minutes, form the homogeneous phase mixed liquor A of expanded graphite, the homogeneous phase mixed liquor of expanded graphite is put into refrigerator and cooled but after 0 ℃, in ice-water bath, add 6.0gNa0H, 4.0g urea (urea), 4.0g apocynum fibre, stir 15 minutes, mixed liquor (containing 6wt%NaOH, 4wt%Urea, 4wt%MCC and 0.01g expanded graphite) is put into the refrigerator of-15 ℃, cooled and stored 2 hours.Again the mixed liquor of freezing state is put at room temperature and thawed, and stir 30 minutes, make apocynum fibre and expanded graphite and form homogeneous mixed solution, the apocynum fibre making and expanded graphite homogeneous mixed solution are spurted into the H of the 5wt% of high-speed stirred
2s0
4in solution, remove unnecessary Na0H, obtain the fibrous apocynum fibre of hygrometric state and expanded graphite composite fibre.With deionized water rinsing composite fibre until the pH value of washing lotion reaches 7, composite fibre at room temperature dries 2 days naturally, in the baking oven of 80 ℃, dry 10 minutes again, obtain dry composite fiber, with the silica suspension that concentration is 1%, through Hydrothermal Synthesis, process composite fibre, obtain the coated composite fibre of silica tubulose, the coated composite fibre of silica tubulose is evenly mixed with boehmite powder, put into microporous pipe mould, with the sinusoidal ac of 50 hertz frequencies, mixture is carried out to activation processing, after activated processing, non-spherical aluminium hydroxide bulky grain is attached to composite fibre surface, forming thickness is 1 centimetre, pore-size distribution is at the flake porous filtering material of 0.01 um-30um, through micropore mold, clamp, be prepared into cast filter.
Embodiment 2
The technique that bluish dogbane raw ramie was boiled → bis-boil → washed → beat fibre → bleaching → pickling → washing → dehydration → oven dry through undue → pickling → washing → mono-is produced apocynum fibre, stand-by.Take weight 0.09g expanded graphite and put into 250mL beaker, add 100mL deionized water, after sonic oscillation 30 minutes, form the homogeneous phase mixed liquor of expanded graphite, the homogeneous phase mixed liquor of expanded graphite is put into refrigerator and cooled but after 0 ℃, in ice-water bath, add 12.0gNa0H, 8.0g urea (urea), 8.0g apocynum fibre, stirs 30 minutes, mixed liquor is put into the refrigerator of-15 ℃, cooled and stored 2 hours.Again the mixed liquor of freezing state is put at room temperature and thawed, and stir 40 minutes, make apocynum fibre and expanded graphite and form homogeneous mixed solution, the apocynum fibre making and expanded graphite homogeneous mixed solution are spurted into the H of the 5wt% of high-speed stirred
2s0
4in solution, remove unnecessary Na0H, obtain the fibrous apocynum fibre of hygrometric state and expanded graphite composite fibre.With deionized water rinsing composite fibre until the pH value of washing lotion reaches 7, composite fibre at room temperature dries 3 days naturally, in the baking oven of 80 ℃, dry 10 minutes again, obtain dry composite fiber, with the silica suspension that concentration is 1%, through Hydrothermal Synthesis, process composite fibre, obtain the coated composite fibre of silica tubulose, the coated composite fibre of silica tubulose is evenly mixed with boehmite powder, put into micropore cup mould, with the sinusoidal ac of 100 hertz frequencies, mixture is carried out to activation processing, after activated processing, non-spherical aluminium hydroxide bulky grain is attached to composite fibre surface, forming thickness is 1 centimetre, pore-size distribution is at the flake porous filtering material of 0.01 um-30um, through micropore mold, clamp, be prepared into a glass type filter.
Embodiment 3
The technique that bluish dogbane raw ramie was boiled → bis-boil → washed → beat fibre → bleaching → pickling → washing → dehydration → oven dry through undue → pickling → washing → mono-is produced apocynum fibre, stand-by.Take weight 0.15g expanded graphite and put into 250mL beaker, add 100mL deionized water, after sonic oscillation 20 minutes, form the homogeneous phase mixed liquor of expanded graphite, the homogeneous phase mixed liquor of expanded graphite is put into refrigerator and cooled but after 0 ℃, in ice-water bath, add 18.0gNa0H, 12.0g urea (urea), 12.0g apocynum fibre, stirs 40 minutes, mixed liquor is put into the refrigerator of-15 ℃, cooled and stored 2 hours.Again the mixed liquor of freezing state is put at room temperature and thawed, and stir 50 minutes, make apocynum fibre and expanded graphite and form homogeneous mixed solution, the apocynum fibre making and expanded graphite homogeneous mixed solution are spurted into the H of the 5wt% of high-speed stirred
2s0
4in solution, remove unnecessary Na0H, obtain the fibrous apocynum fibre of hygrometric state and expanded graphite composite fibre.With deionized water rinsing composite fibre until the pH value of washing lotion reaches 7, composite fibre at room temperature dries 3 days naturally, in the baking oven of 80 ℃, dry 10 minutes again, obtain dry composite fiber, with the silica suspension that concentration is 1%, through Hydrothermal Synthesis, process composite fibre, obtain the coated composite fibre of silica tubulose, the coated composite fibre of silica tubulose is evenly mixed with boehmite powder, put into micropore sheet type mould, with the sinusoidal ac of 100 hertz frequencies, mixture is carried out to activation processing, after activated processing, non-spherical aluminium hydroxide bulky grain is attached to composite fibre surface, forming thickness is 1 centimetre, pore-size distribution is at the flake porous filtering material of 0.01 um-30um, through micropore mold, clamp, be prepared into sheet type filter.
Claims (7)
1. a preparation method for apocynum fibre/expanded graphite composite fibre sorbing material, is characterized in that, comprises the steps:
(1) producing apocynum fibre: divide → pickling → washing → mono-of raw ramie boils → bis-boil → wash → beat fibre → bleaching → pickling → washing → dehydration → oven dry, obtain apocynum fibre, standby
(2) get in proportion expanded graphite and add deionized water, through sonic oscillation, form the mixed liquor A of expanded graphite;
(3) mixed liquor A is cooled to after 0 ℃, in ice-water bath, add Na0H, urea, apocynum fibre, stirs and makes mixed liquid B;
(4) by mixed liquid B freezing 1-3 hour that deposits at the temperature of-15 ℃, then the mixed liquor of freezing state is put at room temperature and thawed, stir 25-35 minute, make apocynum fibre and expanded graphite and form homogeneous phase mixed liquor C;
(5) mixed liquor C is spurted into the H of high-speed stirred
2s0
4in solution, remove unnecessary Na0H, obtain the fibrous apocynum fibre of hygrometric state and expanded graphite composite fibre; With deionized water rinsing composite fibre, until the pH value of washing lotion reaches 7, composite fibre at room temperature dries naturally, then dries in baking oven, obtains dry composite fiber;
(6) with silica suspension, through Hydrothermal Synthesis, process composite fibre; Obtain the coated composite fibre of silica tubulose;
(7) the coated composite fibre of the silica tubulose of gained is evenly mixed with boehmite powder; The mass ratio of the coated composite fibre of silica tubulose and boehmite powder is 1/100-1/2;
(8) with sinusoidal ac, mixture is carried out to activation processing; After activated processing, non-spherical aluminium hydroxide bulky grain is attached to composite fibre surface, forms the larger sorbing material of eyelet.
2. the preparation method of apocynum fibre/expanded graphite composite fibre sorbing material according to claim 1, it is characterized in that: the weight ratio 1/10000 ~ 3/1000 of expanded graphite/apocynum fibre described in step (2), the sonic oscillation time is 10-20 minute.
3. the preparation method of apocynum fibre/expanded graphite composite fibre sorbing material according to claim 1, it is characterized in that: the part by weight of Na0H, urea and the apocynum fibre adding in step (3) is 3:2:2, add the gross weight of three kinds of materials account for mixed liquid B weight 14%, it is 10-20 minute that preparation mixed liquid B mixing time is made in described stirring.
4. the preparation method of apocynum fibre/expanded graphite composite fibre sorbing material according to claim 1, is characterized in that: H described in step (5)
2s0
4the concentration of solution is 3-7wt%.
5. the preparation method of apocynum fibre/expanded graphite composite fibre sorbing material according to claim 1, it is characterized in that: described in step (5), composite fibre at room temperature dries 2 days naturally, in the baking oven of 80 ℃, dry 8-12 minute again, obtain dry composite fiber.
6. the preparation method of apocynum fibre/expanded graphite composite fibre sorbing material according to claim 1, is characterized in that: described in step (6), silica suspension concentration is 1%.
7. the preparation method of apocynum fibre/expanded graphite composite fibre sorbing material according to claim 1, is characterized in that: in step (8), with the sinusoidal ac of 50 hertz frequencies, mixture is carried out to activation processing.
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