CN103506084A - Preparation method of bamboo fiber/expanded graphite composite fiber adsorbing material - Google Patents
Preparation method of bamboo fiber/expanded graphite composite fiber adsorbing material Download PDFInfo
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- CN103506084A CN103506084A CN201210220137.9A CN201210220137A CN103506084A CN 103506084 A CN103506084 A CN 103506084A CN 201210220137 A CN201210220137 A CN 201210220137A CN 103506084 A CN103506084 A CN 103506084A
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Abstract
The invention discloses a preparation method of a bamboo fiber/expanded graphite composite fiber adsorbing material. According to the ultrafiltration water-adsorbing material, the bamboo fiber used as a matrix raw material and the expanded graphite are synthesized into a composite fiber, and the bamboo 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 provided 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 bamboo fibre/expanded graphite composite fibre sorbing material.
Background technology
Bamboo fibre is exactly a kind of cellulose fibre extracting from the bamboo of self-sow, is the fifth-largest natural fiber after cotton, fiber crops, hair, silk, and bamboo fibre is a kind of natural environmental-protective type green fiber truly.The fiber that bamboo is processed into is called bamboo fibre, according to the different bamboo fibres of processing method, is divided into natural bamboo fibres---bamboo fiber, the large class of chemical bamboo fibre two.Bamboo fiber is a kind of brand-new natural fiber, is the natural bamboo fibres that the method that adopts physics, chemistry to combine is produced, and natural bamboo fiber and bamboo pulp fiber are essentially different, and bamboo fiber belongs to natural fiber, and bamboo pulp fiber belongs to chemical fibre.Bamboo fiber succeed in developing the birth that indicates another natural fiber, it meets national industry development policies.Natural bamboo fiber has the good performances such as moisture absorption, ventilative, antibacterial bacteriostatic, deodorizing, antiultraviolet.
The hygroscopicity of bamboo fiber, wet putting, gas permeability occupy first of each large textile fabric.Bamboo fiber is porous fiber, cross section has been full of big and small oval-shaped hole, this special layout is resolved, and it can resolve in the porous of bamboo fibre that it has stronger absorption and receives in a flash and evaporate a large amount of moisture content, its water imbibition is cotton 1.5 times, the height hollow in natural cross section, makes professional person in the industry be called the fiber of " can breathe "; Bamboo fiber has stronger antibiotic and bactericidal action, according to AATCC6538, bamboo fiber, bamboo fibre, ramee and cotton fiber are carried out to anti-microbial property test, result shows, bamboo fiber and bamboo, ramie all have stronger antibacterial action, its antibacterial effect is that any artificial interpolation chemical substance is incomparable, the anti-bacterial fibre of the features such as natural, environmental protection, lasting, health care and artificial is completely different, and its antibacterial effect has certain spectral effects; Owing to containing chlorophyll copper sodium in bamboo fiber, thereby there is good deodorization.Experiment shows, original bamboo fabric is 70%～72% to the deodorizing rate of ammonia, and the deodorizing rate smelly to acid reaches 93%～95%; In addition, chlorophyll copper sodium is safe, good ultra-violet absorber, thereby original bamboo fabric has good antiultraviolet effect; Bamboo fiber is real environment-friendly and green product, pollution-free without any chemical composition, and bamboo fiber 100% is biodegradable.The natural antibacterial of bamboo fiber goods, antibacterial, uvioresistant act on after repeatedly cyclic washing, Exposure to Sunlight, still can guarantee its original feature.
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, bamboo fiber is with excellent performances such as its moisture absorption, ventilative, antibacterial bacteriostatic, deodorizing, antiultraviolets, obtained development and application widely, the bamboo fiber new product of various health, environmental protection, new material constantly enter in people's life, green this concept are mirrored gradually to consumer's psychology.Bamboo fiber is applied to the existing research of water filtration, but it is less to be applied to the research that water purifies, and 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 is to provide a kind of preparation method of bamboo fibre/expanded graphite composite fibre sorbing material, this drainage sorbing material that surpasses is usingd bamboo fiber as base starting material and the synthetic composite fibre of expanded graphite, uses bamboo fiber 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 bamboo fibre/expanded graphite composite fibre sorbing material of the present invention, comprises the steps:
(1) produce bamboo fibre: bamboo wood → bamboo chip processed → steaming bamboo chip → crushing decomposition → biological enzyme degumming → carded fiber, obtain bamboo fibre, standby;
(2) get in proportion expanded graphite and add deionized water, through sonic oscillation, form the homogeneous phase mixed liquor A of expanded graphite;
(3) mixed liquor A is cooled to after 0 ℃, in ice-water bath, add Na0H, urea, bamboo 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 bamboo 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 bamboo 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.
Expanded graphite/bamboo 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 bamboo 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%.
In step (8), with the sinusoidal ac of 50 hertz frequencies, mixture is carried out to activation processing.
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 bamboo fibre as base starting material and the synthetic composite fibre of expanded graphite, uses cotton fiber 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.
Bamboo 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
Bamboo wood material is passed through: bamboo wood → bamboo chip processed → steaming bamboo chip → crushing decomposition → biological enzyme degumming → carded fiber, obtain bamboo fiber, 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 bamboo fiber, 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 bamboo fiber and expanded graphite and form homogeneous mixed solution, the bamboo fiber 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 bamboo fiber 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
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 bamboo fiber, 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 bamboo fiber and expanded graphite and form homogeneous mixed solution, the bamboo fiber 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 bamboo fiber 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
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 bamboo fiber, 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 bamboo fiber and expanded graphite and form homogeneous mixed solution, the bamboo fiber 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 bamboo fiber 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 bamboo fibre/expanded graphite composite fibre sorbing material, is characterized in that, comprises the steps:
(1) produce bamboo fibre: bamboo wood → bamboo chip processed → steaming bamboo chip → crushing decomposition → biological enzyme degumming → carded fiber, obtain bamboo fibre, standby;
(2) get in proportion expanded graphite and add deionized water, through sonic oscillation, form the homogeneous phase mixed liquor A of expanded graphite;
(3) mixed liquor A is cooled to after 0 ℃, in ice-water bath, add Na0H, urea, bamboo 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 bamboo 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 bamboo 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 bamboo fibre/expanded graphite composite fibre sorbing material according to claim 1, is characterized in that: expanded graphite/bamboo fibre weight ratio 1/10000 ~ 3/1000 described in step (2), the sonic oscillation time is 10-20 minute.
3. the preparation method of bamboo 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 bamboo 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 bamboo 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 bamboo 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 bamboo 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 bamboo 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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| CN201210220137.9A CN103506084B (en) | 2012-06-29 | 2012-06-29 | The preparation method of a kind of bamboo fibre/expanded graphite composite fibre sorbing material |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4842909A (en) * | 1986-01-24 | 1989-06-27 | Brassell Gilbert W | Container for storing liquids comprising carbon-carbon composites |
| WO2004050554A1 (en) * | 2002-11-27 | 2004-06-17 | The Lubrizol Corporation | Substrates with modified carbon surfaces |
| CN1824851A (en) * | 2005-12-26 | 2006-08-30 | 苏州市利飞纺织品有限公司 | Preparation of original bamboo fiber by bioenzyme method |
| CN101864602A (en) * | 2009-08-06 | 2010-10-20 | 廖大中 | Method for preparing bamboo fibers by separating bamboo |
-
2012
- 2012-06-29 CN CN201210220137.9A patent/CN103506084B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4842909A (en) * | 1986-01-24 | 1989-06-27 | Brassell Gilbert W | Container for storing liquids comprising carbon-carbon composites |
| WO2004050554A1 (en) * | 2002-11-27 | 2004-06-17 | The Lubrizol Corporation | Substrates with modified carbon surfaces |
| CN1824851A (en) * | 2005-12-26 | 2006-08-30 | 苏州市利飞纺织品有限公司 | Preparation of original bamboo fiber by bioenzyme method |
| CN101864602A (en) * | 2009-08-06 | 2010-10-20 | 廖大中 | Method for preparing bamboo fibers by separating bamboo |
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