CN101922049B - Method for preparing hemp microwave irradiation degummed fiber - Google Patents
Method for preparing hemp microwave irradiation degummed fiber Download PDFInfo
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- CN101922049B CN101922049B CN2010102561869A CN201010256186A CN101922049B CN 101922049 B CN101922049 B CN 101922049B CN 2010102561869 A CN2010102561869 A CN 2010102561869A CN 201010256186 A CN201010256186 A CN 201010256186A CN 101922049 B CN101922049 B CN 101922049B
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- microwave irradiation
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Abstract
The invention provides a method for preparing a hemp microwave irradiation degummed fiber, which is characterized by comprising the following processes of hemp supply, microwave irradiation pretreatment, water washing, microwave irradiation alkali oxygen, bath degumming, fiber degumming, water washing, acid washing, water washing, dehydration, oil supply, dehydration, drying and hemp fiber acquisition. By adopting a microwave irradiation heating principle using BaO2 as a medium, adopting the method for preparing a microwave irradiation hemp degummed fiber and combining an alkali oxygen and bath one-step short process degumming process, the invention not only shortens the degumming process but also can improve the degumming efficiency, shortens degumming and processing time and can obtain high-performance hemp fiber for spinning, weaving and clothes processing.
Description
Technical field
The invention belongs to technical field of textile processing, particularly the reparation technology of natural fabric is a kind of hemp microwave irradiation degummed fiber preparation method specifically.
Background technology
Hemp has caused people's attention as a kind of ecological spinning raw material.Because it has natural health functions such as good antibacterial bacteriostatic, moisture absorption are ventilative, be considered to the following cellulose fibre that has future most.
Compare with flax, ramie, non-cellulose content is higher in the hemp, generally surpasses 40%, and this just makes that the hemp degumming difficulty is bigger.At present, hemp degumming method mainly contain that aging process (natural water retted fibre) is come unstuck, mechanical degumming, chemical Degumming, biochemistry combination degumming and dodge methods such as quick-fried, that ultrasonic wave comes unstuck.But these methods have its deficiency separately:
(1) aging process is affected by environment big, and the time is long, and impurity is many, and efficient is low, and is of poor quality, and polluted water region.
(2) chemical Degumming of hemp is continued to use china grass degumming process basically, adopts to boil and floats two steps or the above technological process of two steps, and technological process is long, and cost is high, consumes big; Seriously polluted to environment, especially a large amount of dischargings of waste water.
(3) though biological degumming technology is simple, and energy consumption is low, few to the pollution of environment, there is the shortcoming not thorough, degummed ramie quality stability difference of coming unstuck, finally also to be aided with chemical Degumming, just can reach the spinning quality requirement.
(4) " dodge quick-fried " to come unstuck the process of fiber that relies on colloidal complex to stick together in the raw ramie is effectively separated; Dodge hemp after the quick-fried processing again when chemical Degumming; Usually time shortens dramatically, and residual gum content is lower, but is difficult to control for the decomposition between unicellular.
(5) " ultrasonic wave " to come unstuck be to propagate in liquid through high-strength ultrasonic, energy-producingly intensify and happen suddenly i.e. " cavitation effect "; Discharge huge energy; Form shock wave, its energy is enough to the separately combination of hemp pectin, reaches the purpose of coming unstuck.
Dodge quick-fried still being at present and study the exploratory stage with the ultrasonic wave degumming technology.
The existing various treatment process time of coming unstuck is long, consumes greatly, and is prone to environment is polluted.Therefore, how to develop new process and technology path at present, the fast degumming that improves hemp is the problem that the scientific and technical research personnel in present technique field are paid close attention to always.
The short flow process degumming and bleaching of hemp alkaline oxygen bath one-step method technology shortens to a step to conventional soda boiling and two step of bleaching operations, is about to boil float two step operations removal object separately and be incorporated in step completion, has shortened technological process and processing time.Though alkali-oxygen one bath has the short characteristics of technological process, usually time is relatively still longer.
Therefore, demand studying a kind of new hemp degumming technology at present urgently, have the processing time of coming unstuck short, the chemical reagent consumption is few, environmental pollution is little, convenience operation, the hemp of can obtain being used to spinning, weave, the clothes processing characteristics is good.
Summary of the invention
The objective of the invention is provides a kind of hemp microwave irradiation degummed fiber preparation method to present hemp degumming long processing time, inefficient present situation, has the highly-efficient treatment of coming unstuck, energy-conservation, environmental protection, convenience operation.
The objective of the invention is to realize through following technical scheme:
A kind of hemp microwave irradiation degummed fiber preparation method is characterized in that the preparation method technological process is following:
Hemp → microwave irradiation preliminary treatment → washing → microwave irradiation alkaline oxygen bath fibre → washing → pickling → washing → dehydration → oil supply → dehydration → oven dry → hemp that comes unstuck → beat;
The pretreated technological parameter of said microwave irradiation is:
Sulfuric acid concentration 1ml/L, temperature 45-50 ℃, bath raio 1: 18-1: 22, time 15-20min;
Said hemp is hempen original ramie or scutchedhemp;
The technological parameter that microwave irradiation alkaline oxygen bath when said hemp is hempen original ramie comes unstuck is:
Range of microwave power is: 800W-40KW, BaO
2Concentration: 0.3-0.7g/L, NaOH concentration: 8-10g/L, H
2O
2Concentration: 7-9g/L, hydrogen peroxide stabilizer 2.5-3g/L, MgSO
47H
2The O consumption is 0.1g/L, bath raio 1: 18-22, temperature 90-99 ℃, time 40-55min;
The technological parameter that microwave irradiation alkaline oxygen bath when said hemp is scutchedhemp comes unstuck is:
Range of microwave power is: 800W-40KW, BaO
2Concentration: 0.3-0.6g/L, NaOH concentration: 5-8g/L, H
2O
2Concentration: 4-7g/L, hydrogen peroxide stabilizer 1.5-2g/L, MgSO
47H
2The O consumption is 0.1g/L, bath raio 1: 18-22, temperature 90-99 ℃, time 35-55min.
Improvement to technique scheme: said washing process parameter is: water flushing hemp, dissolved matter on the fiber and remaining acid solution are removed, and wash to pH=6.5-7.5;
Further improvement to technique scheme: saidly beat fine technological parameter and be: utilize the hydro-peening effect with waterpower of hitting of mechanical mallet to be destroyed by alkali lye but still stick to the removals such as colloid on the fiber, make fiber looser, soft;
Further improvement to technique scheme: said acid cleaning process parameter is: H2SO41-1.5ml/L, bath raio 1: 18-22, normal temperature, pickling time 4-6min.
The present invention compared with prior art has following advantage and good effect:
The present invention is based on quick dose of BaO of spoke with a kind of
2Microwave irradiation heating principle; Adopt the fiber preparation method of microwave irradiation hemp degumming; In conjunction with short flow process degumming tech of one step of alkaline oxygen bath; Have the processing time of coming unstuck short, the chemical reagent consumption is few, environmental pollution is little, energy-conservation, convenience operation, the hemp of can obtain being used to spinning, weave, the clothes processing characteristics is good.
The specific embodiment
A kind of hemp microwave irradiation degummed fiber preparation method, the reparation technology flow process is following:
Hemp (hempen original ramie or scutchedhemp) → microwave irradiation preliminary treatment → washing → microwave irradiation alkaline oxygen bath fibre → washing → pickling → washing → dehydration → oil supply → dehydration → oven dry → hemp that comes unstuck → beat
Concrete technological parameter in the above-mentioned flow process is:
(1) microwave irradiation preliminary treatment: sulfuric acid concentration 1ml/L, temperature 45-50 ℃, bath raio 1: 18-1: 22, time 15-20mi n;
(2) washing: water flushing hemp, dissolved matter on the fiber and remaining acid solution are removed, wash to PH=6.5-7.5;
(3) the microwave irradiation alkaline oxygen bath comes unstuck:
When hemp is that hempen original ramie degumming tech condition is: according to handling hemp material container capacity, range of microwave power is: 800W-40KW, BaO
2Concentration: 0.3-0.7g/L, NaOH concentration: 8-10g/L, H
2O
2Concentration: 7-9g/L, hydrogen peroxide stabilizer 2.5-3g/L, MgSO
47H
2The O consumption is 0.1g/L, bath raio 1: 18-22, temperature 90-99 ℃, time 40-55min;
The degumming tech condition is when hemp is scutchedhemp: according to handling hemp material container capacity, range of microwave power is: 800W-40KW, BaO
2Concentration: 0.3-0.6g/L, NaOH concentration: 5-8g/L, H
2O
2Concentration: 4-7g/L, hydrogen peroxide stabilizer 1.5-2g/L, MgSO
47H
2The O consumption is 0.1g/L, bath raio 1: 18-22, temperature 90-99 ℃, time 35-55min;
(4) beat fine: utilize mechanical mallet hit with the hydro-peening effect of waterpower can be by alkali lye destruction but still stick to the removals such as colloid on the fiber, make fiber looser, soft;
(5) pickling: the acid cleaning process parameter is: H
2SO
41-1.5ml/L, bath raio 1: 18-22, normal temperature, pickling time 4-6min;
(6) oil supply: amido organosilicon softener 3-5ml/L, 35-45 ℃, time 15-25 divides kind, bath raio 1: 10-15.
Below be the specific embodiment of the microwave irradiation degummed fiber preparation method of hempen original ramie:
Embodiment one: hempen original ramie → microwave irradiation preliminary treatment (H
2SO
41ml/L, bath raio 1: 18,48 ℃, 15min) → alkaline oxygen bath under the washing → microwave irradiation come unstuck (microwave reaction container capacity 1L, microwave power 800W, BaO
2: 0.3g/L, NaOH 8g/L, H
2O concentration: 7g/L, hydrogen peroxide stabilizer 2.5g/L, MgSO
47H
2O 0.1g/L, bath raio 1: 18,90 ℃ of temperature, time 40min) → fibre → washing → pickling (normal temperature, H beaten
2SO
41ml/L, time 4min, bath raio 1: 18) to neutrality → washing → dehydration → oil supply (amido organosilicon softener 4ml/L, 40 ℃, 20 minutes time kind, bath raio 1: 10) → dehydration → oven dry → hemp
Embodiment two: hempen original ramie → microwave irradiation preliminary treatment (H
2SO
41ml/L, bath raio 1: 20,45 ℃, 16min) → alkaline oxygen bath under the washing → microwave irradiation come unstuck (microwave reaction container capacity 2L, microwave power i000W, BaO
2: 0.6g/L, NaOH 10g/L, H
2O concentration: 8g/L, hydrogen peroxide stabilizer 2.7g/L, MgSO
47H
2O 0.1g/L, bath raio 1: 20,99 ℃ of temperature, time 45min) → fibre → washing → pickling (normal temperature, H beaten
2SO
41ml/L, time 5min, bath raio 1: 20) to neutrality → washing → dehydration → oil supply (amido organosilicon softener 4ml/L, 40 ℃, 20 minutes time kind, bath raio 1: 10) → dehydration → oven dry → hemp
Embodiment three: hempen original ramie → microwave irradiation preliminary treatment (H
2SO
41ml/L, bath raio 1: 22,45 ℃, 16min) → alkaline oxygen bath under the washing → microwave irradiation come unstuck (microwave reaction container capacity 50L, microwave power 40kW, BaO
2: 0.7g/L, NaOH 10g/L, H
2O concentration: 9g/L, hydrogen peroxide stabilizer 3g/L, MgSO
47H
2O 0.1g/L, bath raio 1: 22,99 ℃ of temperature, time 55mi n) → fibre → washing → pickling (normal temperature, H beaten
2SO
41ml/L, time 6min, bath raio 1: 22) to neutrality → washing → dehydration → oil supply (amido organosilicon softener 4ml/L, 40 ℃, 20 minutes time kind, bath raio 1: 10) → dehydration → oven dry → hemp
Below be the specific embodiment of the microwave irradiation degummed fiber preparation method of scutchedhemp:
Embodiment four: scutchedhemp → microwave irradiation preliminary treatment (H
2SO
41ml/L, bath raio 1: 18,48 ℃, 15min) → alkaline oxygen bath under the washing → microwave irradiation come unstuck (microwave reaction container capacity 1L, microwave power 800W, BaO
2: 0.3g/L, NaOH 5g/L, H
2O
24g/L, hydrogen peroxide stabilizer 1.5g/L, MgSO
47H
2O 0.1g/L, bath raio 1: 18,90 ℃ of temperature, time 45mi n) → fibre → washing → pickling (normal temperature, H beaten
2SO
41ml/L, time 4min, bath raio 1: 18) to neutrality → washing → dehydration → oil supply (amido organosilicon softener 4ml/L, 40 ℃, 20 minutes time kind, bath raio 1: 10) → dehydration → oven dry → hemp
Embodiment five: scutchedhemp → microwave irradiation preliminary treatment (H
2SO
41ml/L, bath raio 1: 20,45 ℃, 16min) → alkaline oxygen bath under the washing → microwave irradiation come unstuck (microwave reaction container capacity 2L, microwave power 1000W, BaO
2: 0.4g/L, NaOH 6g/L, H
2O
25g/L, hydrogen peroxide stabilizer 1.5g/L, MgSO
47H
2O 0.1g/L, bath raio 1: 20,99 ℃ of temperature, time 35mi n) → fibre → washing → pickling (normal temperature, H beaten
2SO
41ml/L, time 5min, bath raio 1: 20) to neutrality → washing → dehydration → oil supply (amido organosilicon softener 4ml/L, 40 ℃, 20 minutes time kind, bath raio 1: 10) → dehydration → oven dry → hemp
Embodiment six: scutchedhemp → microwave irradiation preliminary treatment (H
2SO
41ml/L, bath raio 1: 22,50 ℃, 16min) → alkaline oxygen bath under the washing → microwave irradiation come unstuck (microwave reaction container capacity 50L, microwave power 40kW, BaO
2: 0.6g/L, NaOH 8g/L, H
2O
27g/L, hydrogen peroxide stabilizer 2g/L, MgSO
47H
2O 0.1g/L, bath raio 1: 22,99 ℃ of temperature, time 55mi n) → fibre → washing → pickling (normal temperature, H beaten
2SO
41ml/L, time 6mi n, bath raio 1: 22) to neutrality → washing → dehydration → oil supply (amido organosilicon softener 4ml/L, 40 ℃, 20 minutes time kind, bath raio 1: 10) → dehydration → oven dry → hemp
Microwave of the present invention is auxilliary according to the mechanism of coming unstuck: the difference that the present invention utilizes dielectric material that microwave is absorbed, and the material that promptly dielectric constant is big absorbs the theory of microwave energy more easily, has introduced a kind of catalyst---barium dioxide (BaO
2), its relative dielectric constant is 106.With BaO
2Be applied in during the hemp microwave irradiation fiber produces, and according to BaO
2In the digestion process under the microwave irradiation to the catalytic action of chemical reaction to its called after " quick dose of spoke ".
In microwave is assisted according to the process of coming unstuck, at quick dose of BaO of spoke
2Catalytic action under, microwave can freely penetrate fibrous inside with its excellent penetrability.Owing to absorb microwave energy; The polar molecule of irradiated material fast steering and aligning in microwave electromagnetic field; Tear and mutual friction mutually thereby produce, cause that temperature raises rapidly in the born of the same parents, continuous high temperature makes its internal pressure surpass the ability that expands in all cells space; Cause cell large scale to break, promoted the quick stripping of colloid from hemp phloem.In addition, the electromagnetic field that microwave produced has quickened colloid by the diffusion velocity of cell interior to the extractant interface, thereby has increased substantially the speed of coming unstuck, and has shortened usually time.Heating using microwave is different from traditional heating means, and heat evenly produces from material is inner, and internally everywhere to whole object heating, heats is more even than traditional heating, thereby the colloid removal evenly, guaranteed the hemp degumming quality to greatest extent then.
Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited to above-mentioned giving an example.Those skilled in the art are in essential scope of the present invention, and the variation of making, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (4)
1. hemp microwave irradiation degummed fiber preparation method is characterized in that the preparation method technological process is following:
Hemp → microwave irradiation preliminary treatment → washing → microwave irradiation alkaline oxygen bath fibre → washing → pickling → washing → dehydration → oil supply → dehydration → oven dry → hemp that comes unstuck → beat;
The pretreated technological parameter of said microwave irradiation is:
Sulfuric acid concentration 1ml/L, temperature 45-50 ℃, bath raio 1: 18-1: 22, time 15-20min;
Said hemp is hempen original ramie or scutchedhemp;
The technological parameter that said hempen original ramie microwave irradiation alkaline oxygen bath comes unstuck is:
Range of microwave power is: 800W-40KW, BaO
2Concentration: 0.3-0.7g/L, NaOH concentration: 8-10g/L, H
2O
2Concentration: 7-9g/L, hydrogen peroxide stabilizer 2.5-3g/L, MgSO
47H
2The O consumption is 0.1g/L, bath raio 1: 18-22, temperature 90-99 ℃, time 40-55min;
The technological parameter that said scutchedhemp microwave irradiation alkaline oxygen bath comes unstuck is:
Range of microwave power is: 800W-40KW, BaO
2Concentration: 0.3-0.6g/L, NaOH concentration: 5-8g/L, H
2O
2Concentration: 4-7g/L, hydrogen peroxide stabilizer 1.5-2g/L, MgSO
47H
2The O consumption is 0.1g/L, bath raio 1: 18-22, temperature 90-99 ℃, time 35-55min.
2. according to the described hemp microwave irradiation degummed fiber preparation method of claim 1; It is characterized in that; Washing process parameter before said microwave irradiation alkaline oxygen bath comes unstuck is: water flushing hemp, dissolved matter on the fiber and remaining acid solution are removed, and wash to pH=6.5-7.5.
3. according to claim 1 or 2 described hemp microwave irradiation degummed fiber preparation methods; It is characterized in that; Saidly beat fine technological parameter and be: the colloid of utilizing the hydro-peening effect with waterpower of hitting of mechanical mallet to have been destroyed but still to have sticked on the fiber by alkali lye is removed, and makes fiber looser, soft.
4. according to claim 1 or 2 described hemp microwave irradiation degummed fiber preparation methods, it is characterized in that said acid cleaning process parameter is: H
2SO
41-1.5ml/L, bath raio 1: 18-22, normal temperature, pickling time 4-6min.
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|---|---|---|---|
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|---|---|---|---|
| CN2010102561869A CN101922049B (en) | 2010-08-15 | 2010-08-15 | Method for preparing hemp microwave irradiation degummed fiber |
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| CN101922049B true CN101922049B (en) | 2012-03-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2802641C1 (en) * | 2022-09-26 | 2023-08-30 | Сергей Алексеевич Баскаков | Method for producing bleached powder and fibrous cellulose from plants of umbrella family, baster crops and waste of their processing (embodiments) |
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| CN102330158B (en) * | 2011-08-09 | 2013-04-24 | 太原理工大学 | Hemp degumming and softening synchronous treatment process |
| CN102636381A (en) * | 2012-04-12 | 2012-08-15 | 农业部剑麻及制品质量监督检验测试中心 | Method for conducting auxiliary microwave heating and high-pressure degumming on sisal hemp leaves |
| CN102660779B (en) * | 2012-06-06 | 2014-01-08 | 天津工业大学 | Production method of carex meyeriana fiber |
| CN104264232B (en) * | 2014-08-27 | 2016-04-06 | 青岛大学 | The method of functional bast fiber is prepared in a kind of modification of coming unstuck |
| CN106702501A (en) * | 2017-01-11 | 2017-05-24 | 四川大学 | Method for preparing lotus fibers under microwave conditions |
| CN107354786A (en) * | 2017-07-19 | 2017-11-17 | 广西师范学院 | Sisal hemp footwear rope |
| CN109736020A (en) * | 2019-03-15 | 2019-05-10 | 广州市怡纯净水科技有限公司 | A kind of fiber spun-laced new material of natural bacteriostatic and preparation method thereof |
| CN112918028B (en) * | 2021-01-29 | 2023-06-16 | 江苏厚生新能源科技有限公司 | Antistatic dustproof polyethylene multilayer fabric and preparation process thereof |
| CN114381810A (en) * | 2021-11-22 | 2022-04-22 | 东嘉麻棉(常州)有限公司 | Degumming technology of environment-friendly novel China hemp fiber |
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| DE19617909A1 (en) * | 1996-05-03 | 1997-11-13 | Arnold Moebius | Opening natural fibres into single fibres |
| CN100432305C (en) * | 2006-08-24 | 2008-11-12 | 宋桂玲 | Degumming technology added nono-powder of apocynum by ultrasonic and microwave |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2802641C1 (en) * | 2022-09-26 | 2023-08-30 | Сергей Алексеевич Баскаков | Method for producing bleached powder and fibrous cellulose from plants of umbrella family, baster crops and waste of their processing (embodiments) |
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