CN103506084B - The preparation method of a kind of bamboo fibre/expanded graphite composite fibre sorbing material - Google Patents
The preparation method of a kind of bamboo fibre/expanded graphite composite fibre sorbing material Download PDFInfo
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- CN103506084B CN103506084B CN201210220137.9A CN201210220137A CN103506084B CN 103506084 B CN103506084 B CN 103506084B CN 201210220137 A CN201210220137 A CN 201210220137A CN 103506084 B CN103506084 B CN 103506084B
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Abstract
The present invention discloses the preparation method of a kind of bamboo fibre/expanded graphite composite fibre sorbing material, this drainage sorbing material that exceedes synthesizes composite fibre using bamboo fibre as base starting material and expanded graphite, uses a kind of biologically active sorbing material that the boehmite that bamboo fibre and expanded graphite composite fibre and main component are aluminium hydroxide manufactures.This drainage sorbing material that exceedes can produce positive charge, can adsorb electronegative microorganism and bacteriophage, reaches most microorganism and bacteriophage in adsorbed water.Particularly logical small area analysis, after low-voltage external power source, purifying water effect is better.The feature that the sorbing material that the present invention obtains has material to be easy to get, cheap, operating environment requirements is low and absorption property is high, will be used widely in medical science, veterinary science, food industry and the field such as the water relevant with microbial process and solution purification.
Description
Technical field
The invention belongs to sorbing material technical field, be specifically related to the preparation method of a kind of bamboo fibre/expanded graphite composite fibre sorbing material.
Background technology
Bamboo fibre is exactly a kind of cellulose fibre extracted 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, is divided into natural bamboo fibres according to the different bamboo fibre of processing method---the large class of bamboo fiber, chemical bamboo fibre two.Bamboo fiber is a kind of brand-new natural fiber, and be the natural bamboo fibres that the method adopting physics, chemistry to combine is produced, 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 indicating another natural fiber, it meets national industry development policies.Natural bamboo fiber has the good performance 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 is filled with the hole of big and small ellipse, 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 antibacterial and bactericidal action, according to AATCC6538, anti-microbial property test is carried out to bamboo fiber, bamboo fibre, ramee and cotton fiber, result shows, bamboo fiber and bamboo, ramie all have stronger antibacterial action, its antibacterial effect be any artificial interpolation chemical substance 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, thus there is good deodorization.Experiment shows, the deodorizing rate of original bamboo fabric to ammonia is 70% ~ 72%, and the deodorizing rate smelly to acid reaches 93% ~ 95%; In addition, chlorophyll copper sodium is safety, excellent ultra-violet absorber, and thus original bamboo fabric has good antiultraviolet effect; Bamboo fiber is real environment-friendly and green product, and pollution-free without any chemical composition, 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 ensure its original feature.
China's gross amount of water resources 2.8 tcm, occupies the 6th, the 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 1,600,000,000 peak, water resource only has 1760m3 per capita, will become accepted per capita lower than " short water supply " country of 1700m3 in the world.
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 of Ministry of Water Resources to 532 rivers shows, has the pollution that 436 rivers are subject in various degree, in the section, 15 major metropolitan of seven river, great river warps, has the water quality severe contamination of section, 13 cities.
What lake, the whole nation reached eutrophication water reaches 66%, and Main Lakes nitrogen and phosphorus pollution is heavier, and cause eutrophication problem to be given prominence to, 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.Show according to China's Evaluation of Groundwater Resources in 2003 and strategic issue research, have the groundwater resources of 63% can supply directly to drink, 17% is drinkable after suitably processing, and 8% needs 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 about 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. are all in the trend of exceeding standard.The underground water that the whole nation about has more than 7,000 ten thousand people still drinking fluorine and exceed standard, 3.6 hundred million people in the countryside do not drink the drinking water meeting national standard.
In recent years, the Chinese government has started the improvement of drinking water pollution comprehensively.Especially by environmental protection with energy-conservationly rise to state basic policy, the improvement of drinking water, will more over a long time from now on as wherein important content, from water source, running water produces, water facilities to the purification of water tip, carry out comprehensive rebuilding and improving.
At present, bamboo fiber is with the excellent performance such as its moisture absorption, ventilative, antibacterial bacteriostatic, deodorizing, antiultraviolet, obtain development and application widely, the bamboo fiber new product of various health, environmental protection, new material constantly enter in people's life, this concept green are mirrored gradually the psychology of consumer.Bamboo fiber is applied to the existing research of water filtration, but the research being applied to Water warfare is less, and the present invention utilizes innovative technology to develop large discharge, does not block, long-acting, 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 the bore hole of people cannot be seen, conveniently, generally in units of nanometer, mark its size.But under the microscope, the size of hydrone and bacterium is then far different.The diameter of single hydrone is far smaller than 1 nanometer, and the size of most of bacterium then has hundreds of nanometer.Generally microorganism and bacteriophage all can not be adsorbed to fall for the adsorbent filtering water source at present, and can only work in acidity and neutral environment.
Summary of the invention
Order of the present invention is to provide the preparation method of a kind of bamboo fibre/expanded graphite composite fibre sorbing material, this drainage sorbing material that exceedes synthesizes composite fibre using bamboo fiber as base starting material and expanded graphite, uses the boehmite manufacture that the composite fibre of bamboo fiber and expanded graphite and main component are aluminium hydroxide to form sorbing material.This drainage sorbing material that exceedes can produce positive charge, can adsorb electronegative microorganism and bacteriophage, reaches 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 of the present invention/expanded graphite composite fibre sorbing material, comprises the steps:
(1) bamboo fibre is produced: bamboo wood → bamboo chip processed → steaming bamboo chip → crushing decomposition → biological enzyme degumming → carded fiber, obtains bamboo fibre, for subsequent use;
(2) get expanded graphite in proportion and add deionized water, through sonic oscillation, form the homogeneous phase mixed liquor A of expanded graphite;
(3) after mixed liquor A being cooled to 0 DEG C, in ice-water bath, add Na0H, urea, bamboo fibre, stir and make mixed liquid B;
(4) deposit 1-3 hour by freezing at the temperature of-15 DEG C for mixed liquid B, then the mixed liquor of freezing state is placed on thawed at room temperature, stir 25-35 minute, obtained bamboo fibre and expanded graphite form homogeneous phase mixed liquor C;
(5) mixed liquor C is spurted into the H of high-speed stirred
2s0
4remove unnecessary Na0H in solution, 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 an oven, obtains dry composite fiber;
(6) use silica suspension through Hydrothermal Synthesis process composite fibre; Obtain silica tubulose covered composite yarn fiber;
(7) by the silica tubulose covered composite yarn fiber of gained and boehmite powder Homogeneous phase mixing; The mass ratio of silica tubulose covered composite yarn fiber and boehmite powder is 1/100-1/2;
(8) with sinusoidal ac, activation process is carried out to mixture; After activated process, the aluminium hydroxide bulky grain of non-spherical is attached to composite fiber surface, forms the sorbing material that eyelet is larger.
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 the Na0H, urea and the bamboo fibre that add in step (3) is 3:2:2, and the gross weight adding three kinds of materials accounts for 14% of the weight of mixed liquid B, and 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 DEG C, obtains dry composite fiber.
Described in step (6), silica suspension concentration is 1%.
With the sinusoidal ac of 50 hertz frequencies, activation process is carried out to mixture in step (8).
Above material clamps through micropore mold, prepare various type shape filter, the above mould is cast, cup type, square, round according to the requirement of the filter type shape of required preparation, and the mould of the various shape such as sheet type, the various shape filter of required preparation can meet extensive filtering demand.
The drainage sorbing material that exceedes of the present invention synthesizes composite fibre using bamboo fibre as base starting material and expanded graphite, uses the boehmite manufacture that the composite fibre of cotton fiber and expanded graphite and main component are aluminium hydroxide to form sorbing material.This drainage sorbing material that exceedes can produce positive charge, can adsorb electronegative microorganism and bacteriophage, reaches most microorganism and bacteriophage in adsorbed water.Particularly logical small area analysis, after low-voltage external power source, purifying water effect is better.
Bamboo fibre prepared by the present invention/expanded graphite composite fibre exceedes drainage sorbing material will provide one can eliminate bacterium in water fast, and can not block, and will bring a kind of simple and easy, cheap process for purifying water for social demand.Compared 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, operating environment requirements is low and absorption property is high, will be used widely in medical science, veterinary science, food industry and the field such as the water relevant with microbial process and solution purification.The space that can develop is comparatively large, wide market.
Adopt the filter of embodiment 1, under pressure 0 .5mpa, filter the treatment effect of river as following table.
The content of other harmful substance of table 1 water sample purification front and back and removal rate (unit: mgL
-1)
Microbiological indicator test result and removal rate before and after the purification of table 2 water sample
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.
Embodiment 1
Bamboo wood material is passed through: bamboo wood → bamboo chip processed → steaming bamboo chip → crushing decomposition → biological enzyme degumming → carded fiber, obtains bamboo fiber, stand-by.Take weight 0.01g expanded graphite and put into 250mL beaker, add 100mL deionized water, sonic oscillation is after 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 DEG C, 6.0gNa0H is added in ice-water bath, 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 DEG C, cooled and stored 2 hours.Again the mixed liquor of freezing state is placed on thawed at room temperature, and stirs 30 minutes, obtained bamboo fiber and expanded graphite form homogeneous mixed solution, obtained bamboo fiber and expanded graphite homogeneous mixed solution are spurted into the H of the 5wt% of high-speed stirred
2s0
4remove unnecessary Na0H in solution, 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, dry 10 minutes in the baking oven of 80 DEG C again, obtain dry composite fiber, be that the silica suspension of 1% is through Hydrothermal Synthesis process composite fibre by concentration, obtain silica tubulose covered composite yarn fiber, by silica tubulose covered composite yarn fiber and boehmite powder Homogeneous phase mixing, put into microporous pipe mould, with the sinusoidal ac of 50 hertz frequencies, activation process is carried out to mixture, after activated process, the aluminium hydroxide bulky grain of non-spherical is attached to composite fiber surface, forming thickness is 1 centimetre, pore-size distribution is at the flake porous filtering material of 0.01 um-30um, clamp through micropore mold, be prepared into cast filter.
Embodiment 2
Take weight 0.09g expanded graphite and put into 250mL beaker, add 100mL deionized water, sonic oscillation is after 30 minutes, forms the homogeneous phase mixed liquor of expanded graphite, the homogeneous phase mixed liquor of expanded graphite put into refrigerator and cooled but after 0 DEG C, 12.0gNa0H is added in ice-water bath, 8.0g urea (urea), 8.0g bamboo fiber, stirs 30 minutes, mixed liquor is put into the refrigerator of-15 DEG C, cooled and stored 2 hours.Again the mixed liquor of freezing state is placed on thawed at room temperature, and stirs 40 minutes, obtained bamboo fiber and expanded graphite form homogeneous mixed solution, obtained bamboo fiber and expanded graphite homogeneous mixed solution are spurted into the H of the 5wt% of high-speed stirred
2s0
4remove unnecessary Na0H in solution, 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, dry 10 minutes in the baking oven of 80 DEG C again, obtain dry composite fiber, be that the silica suspension of 1% is through Hydrothermal Synthesis process composite fibre by concentration, obtain silica tubulose covered composite yarn fiber, by silica tubulose covered composite yarn fiber and boehmite powder Homogeneous phase mixing, the sinusoidal ac putting into micropore cup type mould 100 hertz frequencies carries out activation process to mixture, after activated process, the aluminium hydroxide bulky grain of non-spherical is attached to composite fiber surface, forming thickness is 1 centimetre, pore-size distribution is at the flake porous filtering material of 0.01 um-30um, clamp through micropore mold, be prepared into cup type filter.
Embodiment 3
Take weight 0.15g expanded graphite and put into 250mL beaker, add 100mL deionized water, sonic oscillation is after 20 minutes, forms the homogeneous phase mixed liquor of expanded graphite, the homogeneous phase mixed liquor of expanded graphite put into refrigerator and cooled but after 0 DEG C, 18.0gNa0H is added in ice-water bath, 12.0g urea (urea), 12.0g bamboo fiber, stirs 40 minutes, mixed liquor is put into the refrigerator of-15 DEG C, cooled and stored 2 hours.Again the mixed liquor of freezing state is placed on thawed at room temperature, and stirs 50 minutes, obtained bamboo fiber and expanded graphite form homogeneous mixed solution, obtained bamboo fiber and expanded graphite homogeneous mixed solution are spurted into the H of the 5wt% of high-speed stirred
2s0
4remove unnecessary Na0H in solution, 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, dry 10 minutes in the baking oven of 80 DEG C again, obtain dry composite fiber, be that the silica suspension of 1% is through Hydrothermal Synthesis process composite fibre by concentration, obtain silica tubulose covered composite yarn fiber, by silica tubulose covered composite yarn fiber and boehmite powder Homogeneous phase mixing, put into microporous sheet mould, with the sinusoidal ac of 100 hertz frequencies, activation process is carried out to mixture, after activated process, the aluminium hydroxide bulky grain of non-spherical is attached to composite fiber surface, forming thickness is 1 centimetre, pore-size distribution is at the flake porous filtering material of 0.01 um-30um, clamp through micropore mold, be prepared into sheet type filter.
Claims (5)
1. a preparation method for bamboo fibre/expanded graphite composite fibre sorbing material, is characterized in that, comprise the steps:
(1) bamboo fibre is produced: bamboo wood → bamboo chip processed → steaming bamboo chip → crushing decomposition → biological enzyme degumming → carded fiber, obtains bamboo fibre, for subsequent use;
(2) get expanded graphite in proportion and add deionized water, through sonic oscillation, form the homogeneous phase mixed liquor A of expanded graphite; Expanded graphite and bamboo fibre weight ratio 1/10000 ~ 3/1000, the sonic oscillation time is 10-20 minute;
(3) after mixed liquor A being cooled to 0 DEG C, in ice-water bath, add NaOH, urea, bamboo fibre, stir and make mixed liquid B;
(4) deposit 1-3 hour by freezing at the temperature of-15 DEG C for mixed liquid B, then the mixed liquor of freezing state is placed on thawed at room temperature, stir 25-35 minute, obtained bamboo fibre and expanded graphite form homogeneous phase mixed liquor C;
(5) mixed liquor C is spurted into the H of high-speed stirred
2sO
4remove unnecessary NaOH in solution, 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 an oven, obtains dry composite fiber;
(6) use silica suspension through Hydrothermal Synthesis process composite fibre; Obtain silica tubulose covered composite yarn fiber;
(7) by the silica tubulose covered composite yarn fiber of gained and boehmite powder Homogeneous phase mixing; The mass ratio of silica tubulose covered composite yarn fiber and boehmite powder is 1/100-1/2;
(8) with sinusoidal ac, activation process is carried out to mixture; After activated process, the aluminium hydroxide bulky grain of non-spherical is attached to composite fiber surface, forms the sorbing material that eyelet is larger.
2. the preparation method of bamboo fibre according to claim 1/expanded graphite composite fibre sorbing material, it is characterized in that: the part by weight of the NaOH, urea and the bamboo fibre that add in step (3) is 3:2:2, the gross weight adding three kinds of materials accounts for 14% of the weight of mixed liquid B, and it is 10-20 minute that preparation mixed liquid B mixing time is made in described stirring.
3. the preparation method of bamboo fibre according to claim 1/expanded graphite composite fibre sorbing material, is characterized in that: H described in step (5)
2sO
4the concentration of solution is 3-7wt%.
4. the preparation method of bamboo fibre according to claim 1/expanded graphite composite fibre sorbing material, it is characterized in that: described in step (5), composite fibre at room temperature dries 2 days naturally, in the baking oven of 80 DEG C, dry 8-12 minute again, obtain dry composite fiber.
5. the preparation method of bamboo fibre according to claim 1/expanded graphite composite fibre sorbing material, is characterized in that: carry out activation process with the sinusoidal ac of 50 hertz frequencies to mixture in step (8).
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Citations (3)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004050554A1 (en) * | 2002-11-27 | 2004-06-17 | The Lubrizol Corporation | Substrates with modified carbon surfaces |
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Patent Citations (3)
| 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 |
| 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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