CN115491782A - Porous lyocell fiber and preparation method thereof - Google Patents
Porous lyocell fiber and preparation method thereof Download PDFInfo
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- CN115491782A CN115491782A CN202211253242.2A CN202211253242A CN115491782A CN 115491782 A CN115491782 A CN 115491782A CN 202211253242 A CN202211253242 A CN 202211253242A CN 115491782 A CN115491782 A CN 115491782A
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- Prior art keywords
- porous
- fiber
- lyocell
- padding
- calcium sulfate
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- 229920000433 Lyocell Polymers 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 60
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 53
- 239000000725 suspension Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000009987 spinning Methods 0.000 claims abstract description 23
- 239000013078 crystal Substances 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 239000002253 acid Substances 0.000 claims abstract description 17
- 239000002270 dispersing agent Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000002791 soaking Methods 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 10
- 229940095672 calcium sulfate Drugs 0.000 claims description 22
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 238000005096 rolling process Methods 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 14
- 238000007598 dipping method Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 229940095564 anhydrous calcium sulfate Drugs 0.000 claims description 5
- XZBRRWOZPRSTGO-UHFFFAOYSA-L calcium;sulfate;pentahydrate Chemical compound O.O.O.O.O.[Ca+2].[O-]S([O-])(=O)=O XZBRRWOZPRSTGO-UHFFFAOYSA-L 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 abstract description 18
- 238000009826 distribution Methods 0.000 abstract description 6
- 238000001179 sorption measurement Methods 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 8
- 230000003115 biocidal effect Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
- D01F2/08—Composition of the spinning solution or the bath
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention relates to the technical field of functional fibers, in particular to porous lyocell fibers and a preparation method thereof, wherein the porous lyocell fibers are prepared from the following raw materials: the preparation method comprises the steps of uniformly mixing a single crystal, a dispersing agent and water to obtain a calcium sulfate whisker suspension, injecting the calcium sulfate whisker suspension into a spinning raw material, fully mixing, spinning to obtain a fiber bundle, soaking the fiber bundle in a dilute acid tank, padding, and sequentially washing, drying and cutting the fiber bundle after padding to obtain the porous lyocell fiber, wherein the breaking strength of the prepared porous lyocell fiber can reach 4.2cN/dtex, and the surface of the fiber has the characteristics of uniform hole arrangement, high porosity, uniform pore size distribution and high specific surface area, so that the yield of porous fiber products is improved.
Description
Technical Field
The invention relates to the technical field of functional fibers, in particular to porous lyocell fibers and a preparation method thereof.
Background
The lyocell fiber is a brand-new fabric for textile and clothes, has the characteristics of comfort, good hand feeling and easy dyeing, and clothes made of the lyocell fiber have natural luster, smooth hand feeling, good moisture permeability and good air permeability.
The lyocell fibers comprise porous fibers, and porous fiber products are prepared from the porous fibers, but the existing porous fibers have the defects of uneven pore arrangement, uneven pore size distribution and low performance, so that the yield of the porous fiber products is influenced.
Disclosure of Invention
The invention aims to provide porous lyocell fibers and a preparation method thereof, and aims to solve the technical problems that the performance of porous fibers is low and the yield of porous fiber products is influenced in the prior art.
In order to achieve the purpose, the porous lyocell fiber adopted by the invention comprises the following raw materials:
single crystals, a dispersing agent, water, a spinning solution and a regulating solution.
Wherein the single crystal comprises one or more of calcium sulfate pentahydrate crystal whisker, calcium sulfate dihydrate crystal whisker and anhydrous calcium sulfate crystal whisker.
The invention also provides a preparation method of the porous lyocell fiber, which comprises the following steps:
uniformly mixing the single crystal with the dispersing agent and the water to obtain a calcium sulfate whisker suspension;
injecting the calcium sulfate whisker suspension into the spinning raw material, fully mixing, and spinning to obtain a fiber cluster;
soaking the fiber bundle in a dilute acid pool, and padding;
and after padding, sequentially carrying out water washing, drying and cutting on the fiber bundle to obtain the porous lyocell fiber.
Wherein, in the step of uniformly mixing the single crystal with the dispersing agent and the water to obtain the calcium sulfate whisker suspension:
uniformly mixing the single crystal with the dispersing agent and the water to obtain a suspension;
and adjusting the pH value of the suspension by using the adjusting solution to obtain a calcium sulfate whisker suspension.
Wherein, the fiber cluster is soaked in a dilute acid pool and is subjected to padding, and the step comprises the following steps:
the dilute acid pond is one of sulfuric acid and hydrochloric acid.
Wherein, the fiber cluster is soaked in a dilute acid pool and is subjected to padding, and the step comprises the following steps:
the pH value of the dilute acid tank is 3-6, the temperature is 60-100 ℃, and the soaking time is 5-30 min.
Wherein, the fiber cluster is soaked in a dilute acid pool and is subjected to padding, and the step comprises the following steps:
the padding process is one of two-dipping two-rolling and three-dipping three-rolling, the heating temperature of the roller is 100-200 ℃, and the rolling residual rate of single-dipping rolling is 100-200%.
The invention relates to a porous lyocell fiber and a preparation method thereof, which comprises the steps of firstly uniformly mixing a single crystal with a dispersing agent and water to obtain a calcium sulfate whisker suspension, then injecting the calcium sulfate whisker suspension into a spinning raw material, fully mixing, spinning to obtain a fiber cluster, then soaking the fiber cluster in a dilute acid tank, padding, and after padding, sequentially performing water washing, drying and cutting on the fiber cluster to obtain the porous lyocell fiber, wherein the prepared porous lyocell fiber has the characteristics of breaking strength of 4.2cN/dtex, breaking elongation of less than 10%, uniform pore arrangement on the surface of the fiber, high porosity, uniform pore size distribution and high specific surface area; the porous lyocell fiber product is further processed into non-woven fabric, and can be used for manufacturing kitchen supplies or consumable sanitary materials with high water absorption or oil absorption rate; the surface pores and the internal pore channels of the porous lyocell fibers can absorb various assistants such as antibiosis, flame retardance and the like and prepare corresponding functional fibers; the porous lyocell fiber has high adsorption rate and specific surface area, and can be used for adsorbing heavy metal ions and purifying sewage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of the steps of example 1 of the present invention.
Fig. 2 is a flowchart of the steps of embodiment 2 of the present invention.
Fig. 3 is a flowchart of the steps of embodiment 3 of the present invention.
Detailed Description
The invention provides porous lyocell fiber which is prepared from the following raw materials:
single crystals, a dispersing agent, water, a spinning solution and a regulating solution.
Further, the single crystal comprises one or more of calcium sulfate pentahydrate whisker, calcium sulfate dihydrate whisker and anhydrous calcium sulfate whisker.
Example 1, referring to fig. 1, the present invention provides a method for preparing porous lyocell fiber, including the steps of:
s1: uniformly mixing the calcium sulfate pentahydrate crystal whiskers with the dispersing agent and the water to obtain a suspension;
s2: adjusting the pH value of the suspension by using the adjusting solution to obtain a calcium sulfate whisker suspension;
s3: injecting the calcium sulfate whisker suspension into the spinning raw material, fully mixing, and spinning to obtain a fiber cluster;
s4: soaking the fiber bundle in a sulfuric acid pool with the pH value of 5 and the temperature of 100 ℃ for 30min, and padding, wherein the padding process is one of two-padding and two-rolling and three-padding, the roller heating temperature is 200 ℃, and the single-padding residual rate is 200%;
s5: and after padding, sequentially carrying out water washing, drying and cutting on the fiber bundle to obtain the porous lyocell fiber.
In this embodiment, the calcium sulfate pentahydrate whiskers are first uniformly mixed with the dispersant and the water to obtain the suspension, and then: adjusting the pH value of the suspension by using the adjusting solution to obtain the suspension of the calcium sulfate whiskers, injecting the suspension of the calcium sulfate whiskers into the spinning raw material, fully mixing, spinning to obtain the fiber bundle, wherein the dilute acid tank is a water-soluble acidic substance which does not react with cellulose, such as sulfuric acid, hydrochloric acid and the like, soaking the fiber bundle in a sulfuric acid tank with the pH value of 5 and the temperature of 100 ℃ for 30min, padding, the padding process is one of two-dipping two-rolling and three-dipping three-rolling, the roller heating temperature is 200 ℃, the single-dipping rolling residual rate is 200%, and after padding, sequentially performing water washing, drying and cutting on the fiber bundle, finally, the porous lyocell fiber is obtained, the breaking strength of the prepared porous lyocell fiber can reach 4.2cN/dtex, the breaking elongation is lower than 10%, the surface of the fiber has the characteristics of uniform pore arrangement, high porosity, uniform pore size distribution and high specific surface area, a porous lyocell fiber product prepared by using the porous lyocell fiber has high adsorption performance and heat insulation performance, and can have adsorption, antibiosis and heat insulation functions after modification, so that the application range of the lyocell fiber in the fields of household, medical, packaging, water purification and the like is widened, the yield of the porous fiber product is improved, and the preparation method can also be applied to viscose fiber production; the porous lyocell fiber product is further processed into non-woven fabric, and can be used for manufacturing kitchen supplies or consumable sanitary materials with high water absorption or oil absorption rate; the surface pores and the internal pore channels of the porous lyocell fibers can absorb various assistants such as antibiosis, flame retardance and the like and prepare corresponding functional fibers; the porous lyocell fiber has high adsorption rate and specific surface area, and can be used for adsorbing heavy metal ions and purifying sewage.
Example 2, referring to fig. 2, the present invention provides a method for preparing porous lyocell fiber, including the steps of:
s1: uniformly mixing the calcium sulfate dihydrate crystal whisker with the dispersing agent and the water to obtain a suspension;
s2: adjusting the pH value of the suspension by using the adjusting solution to obtain a calcium sulfate whisker suspension;
s3: injecting the calcium sulfate whisker suspension into the spinning raw material, fully mixing, and spinning to obtain a fiber cluster;
s4: soaking the fiber bundle in a sulfuric acid pool with the pH value of 4 and the temperature of 80 ℃ for 13min, and padding, wherein the padding process is one of two-padding and two-rolling and three-padding, the roller heating temperature is 150 ℃, and the single-padding residual rate is 150%;
s5: and after padding, sequentially carrying out water washing, drying and cutting on the fiber bundle to obtain the porous lyocell fiber.
In this embodiment, the calcium sulfate dihydrate whisker is first uniformly mixed with the dispersant and the water to obtain the suspension, then the pH of the suspension is adjusted by using the adjusting solution to obtain a calcium sulfate whisker suspension, and then the calcium sulfate whisker suspension is injected into the spinning raw material, and after sufficient mixing, spinning is performed to obtain the fiber bundle, wherein the dilute acid tank is a water-soluble acidic substance which does not react with cellulose, such as sulfuric acid, hydrochloric acid, and the like, the fiber bundle is immersed in a sulfuric acid tank with a pH of 4 and a temperature of 80 ℃ for 13min and then padded, the padding process is one of two-pad two-roll and three-pad three-roll, the roll heating temperature is 150 ℃, and the single-pad residual ratio is 150%, after padding is finished, the fiber bundle is sequentially subjected to water washing, drying and cutting processes, and finally the porous lyocell fiber is obtained, the breaking strength of the prepared porous lyocell fiber can reach 4.2cN/dtex, the breaking elongation is lower than 10%, the fiber surface has the characteristics of uniform pore arrangement, high porosity, uniform pore size distribution and high specific surface area, a porous lyocell fiber product manufactured by using the porous lyocell fiber has high adsorption performance and heat insulation performance, and the modified porous lyocell fiber product can have the functions of adsorption, antibiosis and heat insulation, so that the application range of the lyocell fiber in the fields of household, medical, packaging, water purification and the like is widened, the application yield of the porous fiber product is improved, and the preparation method can also be used for producing viscose fiber; the porous lyocell fiber product is further processed into non-woven fabric, and can be used for manufacturing kitchen supplies or consumable sanitary materials with high water absorption or oil absorption rate; the surface pores and the internal pore channels of the porous lyocell fibers can absorb various assistants such as antibiosis, flame retardance and the like and prepare corresponding functional fibers; the porous lyocell fiber has high adsorption rate and specific surface area and can be used for adsorbing heavy metal ions and purifying sewage.
Example 3, referring to fig. 3, the present invention provides a method for preparing porous lyocell fiber, including the steps of:
s1: uniformly mixing the anhydrous calcium sulfate whiskers with the dispersant and the water to obtain a suspension;
s2: adjusting the pH value of the suspension by using the adjusting solution to obtain a calcium sulfate whisker suspension;
s3: injecting the calcium sulfate whisker suspension into the spinning raw material, fully mixing, and spinning to obtain a fiber cluster;
s4: soaking the fiber bundle in a hydrochloric acid pool with the pH value of 3 and the temperature of 60 ℃ for 5min, and padding, wherein the padding process is one of two-dipping two-padding and three-dipping three-padding, the roller heating temperature is 100 ℃, and the single-dipping padding residual rate is 100%;
s5: and after padding, sequentially carrying out water washing, drying and cutting on the fiber bundle to obtain the porous lyocell fiber.
In the embodiment, the anhydrous calcium sulfate whiskers, the dispersant and the water are uniformly mixed to obtain a suspension, the pH value of the suspension is adjusted by using the adjusting solution to obtain a calcium sulfate whisker suspension, the calcium sulfate whisker suspension is injected into the spinning raw material, spinning is performed after sufficient mixing to obtain the fiber bundle, the dilute acid pool is water-soluble acidic substances such as sulfuric acid and hydrochloric acid which do not react with cellulose, the fiber bundle is soaked in a hydrochloric acid pool with the pH value of 3 and the temperature of 60 ℃ for 5min and is subjected to padding, the padding process is one of two-dipping two-rolling and three-dipping three-rolling, the roller heating temperature is 100 ℃, and the single-padding residual rate is 100%, after padding is finished, the fiber bundle is sequentially subjected to water washing, drying and cutting processes to finally obtain the porous lyocell fiber, the breaking strength of the prepared porous lyocell fiber can reach 4.2cN/dtex, the breaking elongation is less than 10%, the surface of the fiber has the characteristics of uniform hole arrangement, high porosity, uniform pore size distribution and high specific surface area, a porous lyocell fiber product prepared by using the porous lyocell fiber has high adsorption performance and heat insulation performance, and the modified porous lyocell fiber product can have the functions of adsorption, antibiosis and heat insulation, widens the application range of the lyocell fiber in the fields of household use, medical use, packaging, water purification and the like, realizes the improvement of the yield of the porous fiber product, and the preparation method can also be used for producing viscose fibers; the porous lyocell fiber product is further processed into non-woven fabric, and can be used for manufacturing kitchen supplies or consumable sanitary materials with high water absorption or oil absorption rate; the surface pores and the internal pore passages of the porous lyocell fibers can absorb various assistants such as antibacterial and flame retardant and the like and prepare corresponding functional fibers; the porous lyocell fiber has high adsorption rate and specific surface area, and can be used for adsorbing heavy metal ions and purifying sewage.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The porous lyocell fiber is characterized by being prepared from the following raw materials:
single crystals, a dispersing agent, water, a spinning solution and a regulating solution.
2. The porous lyocell fiber according to claim 1, wherein,
the single crystal comprises one or more of calcium sulfate pentahydrate crystal whisker, calcium sulfate dihydrate crystal whisker and anhydrous calcium sulfate crystal whisker.
3. A method of producing porous lyocell fibers, the porous lyocell fibers of claim 1 being produced, comprising the steps of:
uniformly mixing the single crystal with the dispersing agent and the water to obtain a calcium sulfate whisker suspension;
injecting the calcium sulfate whisker suspension into the spinning raw material, fully mixing, and spinning to obtain a fiber cluster;
soaking the fiber bundle in a dilute acid pool, and padding;
and after padding, sequentially carrying out water washing, drying and cutting on the fiber bundle to obtain the porous lyocell fiber.
4. The method for preparing porous lyocell fiber according to claim 3, wherein, in the step of uniformly mixing the single crystal with the dispersant and the water to obtain a suspension of calcium sulfate whiskers:
uniformly mixing the single crystal with the dispersing agent and the water to obtain a suspension;
and adjusting the pH value of the suspension by using the adjusting solution to obtain a calcium sulfate whisker suspension.
5. The porous lyocell fiber preparation method of claim 3, wherein in the step of immersing the fiber bundle in a dilute acid bath and padding:
the dilute acid pond is one of sulfuric acid and hydrochloric acid.
6. The process for preparing porous lyocell fibers according to claim 3, wherein, in the step of immersing said fiber bundle in a dilute acid bath and padding:
the pH value of the dilute acid pool is 3-6, the temperature is 60-100 ℃, and the soaking time is 5-30 min.
7. The porous lyocell fiber preparation method of claim 3, wherein in the step of immersing the fiber bundle in a dilute acid bath and padding:
the padding process is one of two-dipping two-rolling and three-dipping three-rolling, the heating temperature of the roller is 100-200 ℃, and the rolling residual rate of the single-dipping rolling is 100-200%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211253242.2A CN115491782A (en) | 2022-10-13 | 2022-10-13 | Porous lyocell fiber and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211253242.2A CN115491782A (en) | 2022-10-13 | 2022-10-13 | Porous lyocell fiber and preparation method thereof |
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| CN115491782A true CN115491782A (en) | 2022-12-20 |
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| CN202211253242.2A Pending CN115491782A (en) | 2022-10-13 | 2022-10-13 | Porous lyocell fiber and preparation method thereof |
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|---|---|---|---|---|
| CH187083A (en) * | 1934-10-10 | 1936-10-31 | Bekleidungsindustrie G M B H D | Process for the production of man-made staple fibers. |
| JP2000109597A (en) * | 1998-10-06 | 2000-04-18 | Rengo Co Ltd | Production of porous cellulose material and porous cellulose material |
| CN101195933A (en) * | 2007-12-06 | 2008-06-11 | 东华大学 | Method for producing Lyocell fibre for tire cord |
| CN102151489A (en) * | 2011-03-21 | 2011-08-17 | 凌雪萍 | Multi-core hollow fiber porous membrane and preparation method thereof |
| CN106456453A (en) * | 2014-04-08 | 2017-02-22 | 智能聚合物有限公司 | Cellulosic shaped bodies with physiologically active minerals distributed therein |
| CN107903351A (en) * | 2017-11-25 | 2018-04-13 | 长沙秋点兵信息科技有限公司 | Preparation method of adsorption resin for extracting plant flavone |
| CN110184666A (en) * | 2019-06-20 | 2019-08-30 | 宜宾屏山辉瑞油脂有限公司 | Spinning head used in the manufacturing method and manufacturing process of flame retardant cellulose fiber |
| CN113173801A (en) * | 2021-04-28 | 2021-07-27 | 深圳市基克纳科技有限公司 | Porous material and preparation method and application thereof |
-
2022
- 2022-10-13 CN CN202211253242.2A patent/CN115491782A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH187083A (en) * | 1934-10-10 | 1936-10-31 | Bekleidungsindustrie G M B H D | Process for the production of man-made staple fibers. |
| JP2000109597A (en) * | 1998-10-06 | 2000-04-18 | Rengo Co Ltd | Production of porous cellulose material and porous cellulose material |
| CN101195933A (en) * | 2007-12-06 | 2008-06-11 | 东华大学 | Method for producing Lyocell fibre for tire cord |
| CN102151489A (en) * | 2011-03-21 | 2011-08-17 | 凌雪萍 | Multi-core hollow fiber porous membrane and preparation method thereof |
| CN106456453A (en) * | 2014-04-08 | 2017-02-22 | 智能聚合物有限公司 | Cellulosic shaped bodies with physiologically active minerals distributed therein |
| CN107903351A (en) * | 2017-11-25 | 2018-04-13 | 长沙秋点兵信息科技有限公司 | Preparation method of adsorption resin for extracting plant flavone |
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Application publication date: 20221220 |