CN109162132B - Extraction method of coconut shell fiber - Google Patents
Extraction method of coconut shell fiber Download PDFInfo
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- CN109162132B CN109162132B CN201811094869.1A CN201811094869A CN109162132B CN 109162132 B CN109162132 B CN 109162132B CN 201811094869 A CN201811094869 A CN 201811094869A CN 109162132 B CN109162132 B CN 109162132B
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- coconut shell
- coconut
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- shell fiber
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Processing Of Solid Wastes (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses an extraction method of coconut fibers, which comprises the following steps: crushing coconut shells; adding deionized water and lipase into a jar, uniformly mixing, heating to 45 ℃, putting the broken coconut shell into the jar, soaking for 2-3h, and filtering; adding sodium hydroxide solution into the cooking pot, adding filtered coconut shell, heating and pressurizing, cooking for 1-1.5h, taking out after cooking, and washing with water for 10-15 min; dissecting the coconut shells washed in the step (3) into crude fibers by using a filamentization machine, and washing for 10-15min by using water; uniformly mixing deionized water, chlorine dioxide and sodium carbonate, adding the crude fiber washed in the step (4), soaking for 30-40min, taking out, and washing for 15-20min by using hot water; and (5) dehydrating and drying the crude fiber washed in the step (5), and then loosening by using a carding machine to obtain the coconut shell fiber. The extraction method of the coconut shell fiber has the advantages of uniform extraction of the coconut shell fiber, less impurities and low residual fat rate, and ensures the quality of the coconut shell fiber.
Description
Technical Field
The invention relates to the field of textiles, in particular to a method for extracting coconut shell fibers.
Background
The coconut shell is endocarp of coconut of Palmae, and contains ash 0.61%, lignin 36.51%, cellulose 53.06%, and pentosan 29.27% (total amount). It can be used for treating yin wind cold and heat. The plant morphology is detailed in coconut husk strips. Patterns and characters are carved on the coconut shell, and even doll head images and folk artworks of various birds and rains are manufactured. The coconut shell contains a large amount of fibers, and the coconut shell fibers can be used for producing small carpets, mats, ropes, filter cloth and the like; secondly, because the coconut fibers are degradable and do not cause harm to the ecological environment, the coconut fibers can be used for processing the non-woven fabric for soil control; in addition, the coconut shell fiber has strong toughness, and can be used as a reinforcing base of the composite material instead of synthetic fiber. However, the traditional process of extracting and processing coconut fiber makes the prepared fiber coarse, heavy and uneven, so that the final application of the fiber is very limited, and a large amount of coconut shells are directly treated as garbage every year.
Disclosure of Invention
The invention aims to provide an extraction method of coconut shell fiber, which has the advantages of uniform extracted coconut shell fiber, less impurities and low residual fat rate, and ensures the quality of the coconut shell fiber.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for extracting coconut shell fiber comprises the following steps:
(1) crushing the coconut shell to obtain crushed coconut shell blocks for later use;
(2) adding deionized water and lipase into a jar, uniformly mixing, heating to 45 ℃, keeping constant temperature, placing broken coconut shells into the jar, soaking for 2-3h, and filtering;
(3) adding sodium hydroxide solution into a cooking pot, adding the coconut shells filtered in the step (2), heating and pressurizing, cooking for 1-1.5h, taking out after cooking, and washing with water for 10-15 min;
(4) dissecting the coconut shells washed in the step (3) into crude fibers by using a filamentization machine, and washing for 10-15min by using water;
(5) uniformly mixing deionized water, chlorine dioxide and sodium carbonate, adding the crude fiber washed in the step (4), soaking for 30-40min, taking out, and washing for 15-20min by using hot water;
(6) and (5) dehydrating and drying the crude fiber washed in the step (5), and then loosening by using a carding machine to obtain the coconut shell fiber.
Preferably, in the step (1), the length of the coconut shell fragments is 5-7 cm.
Preferably, in the step (2), the addition amount of the lipase is 0.6-0.8% of the mass of the deionized water.
Preferably, in the step (3), the concentration of the sodium hydroxide solution is 0.5% -1%.
Preferably, in the step (3), the heating temperature is controlled to be between 105 ℃ and 120 ℃, and the pressurizing pressure is controlled to be between 14.7 and 18.3 MPa.
Preferably, in the step (5), the hot water temperature is 80-90 ℃.
Preferably, in the step (5), the concentration of the sodium carbonate is 5% and the concentration of the chlorine dioxide is 3% -5%.
Preferably, in the step (6), the loosening method is to perform coarse loosening for 1-2 times and then perform fine loosening for 2-4 times.
Preferably, in the step (6), the dehydration drying method is vacuum drying.
Compared with the prior art, the invention has the beneficial effects that:
(1) and (3) performing first degreasing through enzymolysis in the step (2), wherein in the step (3), under the condition of high-temperature and high-pressure alkali liquor immersion, fat in the coconut shells and sodium hydroxide generate sodium aliphatate dissolved in water, polysaccharides are dissolved, hemicellulose is decomposed, hydroxyl, lignin and colloid in the coconut shells are reduced, and second degreasing of the coconut shells is realized.
(2) And (3) firstly, the coconut shells are dissected into crude fibers, then the crude fibers are soaked in the solution obtained in the step (5), so that the crude fibers can be fully softened, and then, the coconut shell fibers can be degreased again by utilizing vacuum drying.
(3) The coconut fiber prepared by the method greatly reduces the residual fat rate and the residual gum rate, and the prepared fiber has uniform thickness and length and less impurities, thereby ensuring the quality of the coconut fiber.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The method for extracting the coconut fibers in the embodiment comprises the following steps:
(1) crushing the coconut shell to obtain crushed coconut shell blocks, wherein the length of the crushed coconut shell blocks is 5cm for later use;
(2) adding deionized water and lipase into a jar, wherein the addition amount of the lipase is 0.6 percent of the mass of the deionized water, uniformly mixing, heating to 45 ℃, keeping the temperature constant, placing the broken coconut shells into the jar, soaking for 2 hours, and filtering;
(3) adding 0.5% sodium hydroxide solution into a cooking pot, adding the coconut shell filtered in the step (2), heating and pressurizing at 105 deg.C under 14.7MPa for 1h, taking out, and washing with water for 10 min;
(4) dissecting the coconut shells washed in the step (3) into crude fibers by using a filamentization machine, and washing for 10-15min by using water;
(5) uniformly mixing deionized water, chlorine dioxide and sodium carbonate, wherein the concentration of the sodium carbonate is 5% and the concentration of the chlorine dioxide is 3%, then adding the crude fiber washed in the step (4), soaking for 30min, taking out, and washing for 15min with hot water at the temperature of 80 ℃;
(6) and (4) carrying out vacuum drying on the crude fiber washed in the step (5), and then loosening by using a carding machine, wherein the loosening method comprises the steps of carrying out coarse loosening for 1 time and then carrying out fine loosening for 2 times to obtain the coconut shell fiber.
Example 2
The method for extracting the coconut fibers in the embodiment comprises the following steps:
(1) crushing the coconut shell to obtain crushed coconut shell blocks, wherein the length of the crushed coconut shell blocks is 6m for later use;
(2) adding deionized water and lipase into a jar, wherein the addition amount of the lipase is 0.7 percent of the mass of the deionized water, uniformly mixing, heating to 45 ℃, keeping the temperature constant, placing the broken coconut shells into the jar, soaking for 2.5 hours, and filtering;
(3) adding 0.7% sodium hydroxide solution into a cooking pot, adding the coconut shell filtered in the step (2), heating and pressurizing at 112 deg.C under 16.8MPa for 1.2 hr, taking out, and washing with water for 13 min;
(4) the coconut shells washed in the step (3) are dissected into crude fibers by a filamentization machine, and then are washed for 13min by water;
(5) uniformly mixing deionized water, chlorine dioxide and sodium carbonate, wherein the concentration of the sodium carbonate is 5% and the concentration of the chlorine dioxide is 4%, then adding the crude fiber washed in the step (4), soaking for 35min, taking out, and washing for 16min by using hot water at the temperature of 85 ℃;
(6) and (4) carrying out vacuum drying on the crude fiber washed in the step (5), and then loosening by using a carding machine, wherein the loosening method comprises the steps of carrying out coarse loosening for 1 time and then carrying out fine loosening for 3 times to obtain the coconut shell fiber.
Example 3
The method for extracting the coconut fibers in the embodiment comprises the following steps:
(1) crushing the coconut shell to obtain crushed coconut shell blocks, wherein the length of the crushed coconut shell blocks is 7cm for later use;
(2) adding deionized water and lipase into a jar, wherein the addition amount of the lipase is 0.8 percent of the mass of the deionized water, uniformly mixing, heating to 45 ℃, keeping the temperature constant, putting the broken coconut shells into the jar, soaking for 3 hours, and filtering;
(3) adding 1% sodium hydroxide solution into a cooking pot, adding the coconut shell filtered in the step (2), heating and pressurizing at 120 deg.C under 18.3MPa for 1.5 hr, taking out, and washing with water for 15 min;
(4) the coconut shells washed in the step (3) are dissected into crude fibers by a filamentization machine, and then are washed for 15min by water;
(5) uniformly mixing deionized water, chlorine dioxide and sodium carbonate, wherein the concentration of the sodium carbonate is 5 percent and the concentration of the chlorine dioxide is 5 percent, then adding the crude fiber washed in the step (4), soaking for 40min, taking out, and washing for 20min by using hot water at the temperature of 90 ℃;
(6) and (4) carrying out vacuum drying on the crude fiber washed in the step (5), and then loosening by using a carding machine, wherein the loosening method comprises the steps of carrying out coarse loosening for 2 times and then carrying out fine loosening for 4 times to obtain the coconut shell fiber.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.
Claims (9)
1. The extraction method of the coconut shell fiber is characterized by comprising the following steps:
(1) crushing the coconut shell to obtain crushed coconut shell blocks for later use;
(2) adding deionized water and lipase into a jar, uniformly mixing, heating to 45 ℃, keeping constant temperature, placing broken coconut shells into the jar, soaking for 2-3h, and filtering;
(3) adding sodium hydroxide solution into a cooking pot, adding the coconut shells filtered in the step (2), heating and pressurizing, cooking for 1-1.5h, taking out after cooking, and washing with water for 10-15 min;
(4) dissecting the coconut shells washed in the step (3) into crude fibers by using a filamentization machine, and washing for 10-15min by using water;
(5) uniformly mixing deionized water, chlorine dioxide and sodium carbonate, adding the crude fiber washed in the step (4), soaking for 30-40min, taking out, and washing for 15-20min by using hot water;
(6) and (5) dehydrating and drying the crude fiber washed in the step (5), and then loosening by using a carding machine to obtain the coconut shell fiber.
2. The method for extracting coconut shell fiber according to claim 1, wherein the method comprises the following steps: in the step (1), the length of the broken coconut shell is 5-7 cm.
3. The method for extracting coconut shell fiber according to claim 1, wherein the method comprises the following steps: in the step (2), the addition amount of the lipase is 0.6-0.8% of the mass of the deionized water.
4. The method for extracting coconut shell fiber according to claim 1, wherein the method comprises the following steps: in the step (3), the concentration of the sodium hydroxide solution is 0.5% -1%.
5. The method for extracting coconut shell fiber according to claim 1, wherein the method comprises the following steps: in the step (3), the heating temperature is controlled to be 105-120 ℃, and the pressurizing pressure is controlled to be 14.7-18.3 MPa.
6. The method for extracting coconut shell fiber according to claim 1, wherein the method comprises the following steps: in the step (5), the temperature of the hot water is 80-90 ℃.
7. The method for extracting coconut shell fiber according to claim 1, wherein the method comprises the following steps: in the step (5), the concentration of the sodium carbonate is 5 percent, and the concentration of the chlorine dioxide is 3 to 5 percent.
8. The method for extracting coconut shell fiber according to claim 1, wherein the method comprises the following steps: in the step (6), the loosening method comprises the steps of performing coarse loosening for 1-2 times and then performing fine loosening for 2-4 times.
9. The method for extracting coconut shell fiber according to claim 1, wherein the method comprises the following steps: in the step (6), the dehydration drying method is vacuum drying.
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| CN201811094869.1A CN109162132B (en) | 2018-09-19 | 2018-09-19 | Extraction method of coconut shell fiber |
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| CN109162132B true CN109162132B (en) | 2020-08-14 |
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| CN112080089A (en) * | 2020-09-15 | 2020-12-15 | 中工恒盛科技有限公司 | Preparation method of high-thermal-conductivity polyvinyl chloride cable protection pipe |
| CN112211017A (en) * | 2020-10-27 | 2021-01-12 | 海南热带海洋学院 | Alkaline method for making paper pulp by using coconut peel as raw material |
| CN112314956A (en) * | 2020-11-20 | 2021-02-05 | 海南青农创业园管理有限公司 | Chewable coconut fiber food and processing method thereof |
| CN114953084B (en) * | 2022-06-10 | 2023-03-28 | 常熟立仁新型材料有限公司 | Preparation method of eucalyptus fibers |
| CN117831686B (en) * | 2024-03-06 | 2024-06-28 | 山东大学 | Method and system for predicting coconut fiber to improve concrete strength based on random forest |
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| CN1600907B (en) * | 2004-10-13 | 2010-12-08 | 刘忆萍 | Preparation method for fabricating raw bamboo into spinnable bamboo fibers |
| AT503610B1 (en) * | 2006-05-10 | 2012-03-15 | Chemiefaser Lenzing Ag | METHOD FOR PRODUCING A PULP |
| CN104195650B (en) * | 2014-08-21 | 2016-04-27 | 浙江省义乌市亨德利毛纺有限公司 | The soft coconut husk fine fibre production technology of a kind of spinnability and product application thereof |
| CN104172653B (en) * | 2014-08-25 | 2016-03-16 | 吴建刚 | A kind of natural coconut fiber sole and preparation method thereof and the footwear with this sole |
| CN106283203A (en) * | 2015-05-30 | 2017-01-04 | 安庆宣竹科技股份有限公司 | A kind of extraction process of bamboo fiber |
| CN105483837B (en) * | 2016-01-20 | 2017-09-26 | 沈习军 | A kind of method of oil palm fibre deep processing |
| CN106696030A (en) * | 2016-12-16 | 2017-05-24 | 福建神采新材料科技有限公司 | Technology for soaking bamboo to reduce bamboo gadolinium lose |
| CN106880218A (en) * | 2017-02-13 | 2017-06-23 | 徐正诚 | A kind of 3D environmental protection coir fibre hard packing |
| CN107627416A (en) * | 2017-10-26 | 2018-01-26 | 防城港市奥氏蓝科技有限公司 | A kind of extracting method of efficiently single bamboo fibre |
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Denomination of invention: A kind of extraction method of coir fiber Effective date of registration: 20220824 Granted publication date: 20200814 Pledgee: Anhui Tongcheng rural commercial bank Limited by Share Ltd. grass branch Pledgor: ANHUI JIUTIAN PRINTING CO.,LTD. Registration number: Y2022980013465 |
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Date of cancellation: 20230925 Granted publication date: 20200814 Pledgee: Anhui Tongcheng rural commercial bank Limited by Share Ltd. grass branch Pledgor: ANHUI JIUTIAN PRINTING CO.,LTD. Registration number: Y2022980013465 |
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