CN100503907C - Method for direct manufacturing regenerated bamboo fiber from papermaking-level bamboo pulp dregs - Google Patents
Method for direct manufacturing regenerated bamboo fiber from papermaking-level bamboo pulp dregs Download PDFInfo
- Publication number
- CN100503907C CN100503907C CNB2006100267681A CN200610026768A CN100503907C CN 100503907 C CN100503907 C CN 100503907C CN B2006100267681 A CNB2006100267681 A CN B2006100267681A CN 200610026768 A CN200610026768 A CN 200610026768A CN 100503907 C CN100503907 C CN 100503907C
- Authority
- CN
- China
- Prior art keywords
- bamboo
- bamboo pulp
- aqueous solution
- fiber
- spinning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention relates to a method for manufacturing regenerated bamboo fiber in the chemical fiber manufacturing, concretely selecting market- sold low-grade bamboo pulp with polymerization degree greater than 1000 as raw material, making depolymerization by irradiation of high energy radial, crushing the processed bamboo pulp and dissolving in the N-methyl morpholine oxide water solution, and obtaining raw spinning liquor; the pressurizing the raw spinning liquor and filtering by prefilter, extruding the filtrate by spinneret at 70-110 deg.C, solidifying and shaping in the N-methyl morpholine oxide water solution, and drip-washing, and finally making filaments and short fibers of various standards by corresponding routine processes. And it largely reduces production cost and reduces environmental pollution and retains more features of the original bamboo fiber.
Description
Technical field
The present invention relates to the manufacture method of cellulose fiber by solvent method in the chemical fibre manufacturing, be meant a kind of method of utilizing the papermaking level bamboo pulp directly to produce regenerated bamboo fiber especially.
Background technology
China is a country that the bamboo growth is very general, bamboo resource is abundant, have the title of " bamboo kingdom ", and the bamboo grove area is about more than 500 ten thousand hectares, accounts for 30% of world's total amount; And the bamboo growth rapidly, and the use of just can becoming a useful person in general 3 years has sustainable development; In addition, the regenerated bamboo fiber that with the bamboo wood is the raw material manufacturing also has some particular performances except that the general performance with cotton, die model cellulose fibre, as nice and cool, natural bacteriostatic, delicate fragrance and negative ion effect etc.Therefore, bamboo wood is one of raw material of a kind of tencel cellulose fiber that is worthy of popularization.
Can make the papermaking level bamboo pulp after bamboo wood handled by operations such as pulverizing, boiling, desanding, refining, multistage bleachings, because this bamboo pulp average degree of polymerization is higher, usually more than 1000, and alpha-cellulose content is low, therefore paper industry can only be used for, spinning process should not be directly be used for carrying out.Usually to carry out a series of degenerative treatments to the papermaking level bamboo pulp, the average degree of polymerization of bamboo cellulose is significantly reduced, alpha-cellulose content improve promptly make the fibre-grade bamboo pulp after, can be used to be processed into fiber.ZL02112175.3 discloses the bamboo pulp denatured production technology that produces Soluble Fiber level bamboo pulp of papermaking level, comprise that mainly alkali pre-preg, secondary boiled, dull and stereotyped (band) formula wash material, ooze and the multistage operation such as float, because treatment process is many, so processing cost height, if adopting the fibre-grade bamboo pulp is that raw material is made regenerated bamboo fiber, certainly will cause the on the high side of fiber.In addition, the production technology of this patent disclosure can produce a large amount of waste water, is unfavorable for environmental protection.
The method of making regenerated bamboo fiber at present mainly contains two kinds of technologies, the promptly traditional viscose process technology and the solvent process of environmental protection.The patent ZL03128496.5 of Hebei lucky punt-pole chemical fibre Co., Ltd and the patent CN1465760 of Shanghai Chinese rose chemical fibre Co., Ltd adopt the spinning of viscose process technology to make regenerated bamboo fiber, its long flow path, and three-waste pollution is serious.The patent ZL03129531.2 of Donghua University adopts solvent process to make regenerated bamboo fiber, has overcome the shortcoming of viscose process technology, is that raw material makes production cost higher but adopt the fibre-grade bamboo pulp.
Summary of the invention
It is the method for raw material by solvent process manufacturing regenerated bamboo fiber with commercially available papermaking level bamboo pulp directly that the object of the invention provides a kind of, and this method not only greatly reduces cost of material, has reduced pollution, and the performance of gained fiber is more characteristic.
For realizing that this purpose adopts following processing step:
1. average degree of polymerization is adopted the high-energy ray radiation treatment greater than 1000 papermaking level bamboo pulp, the control absorbed dose of radiation is 0.2～100kGy, is preferably 0.5～50kGy, most preferably is 2～10kGy:
2. the bamboo pulp after handling described in 1 being pulverized back and moisture and be the aqueous solution of 20%～40% N-methylmorpholine oxide and antioxidant adds respectively in the dissolution equipment of being with agitating device by the weight ratio of 5～25:100:0.01～0.2, after 70～115 ℃ stirring makes mixing of materials evenly down, constantly vacuumize the moisture in the system of sloughing, generate transparent bubble-free spinning solution; Described moisture be the aqueous solution of 20%～40% N-methylmorpholine oxide can to adopt moisture be aqueous solution inspissation under reduced pressure of 50% N-methylmorpholine oxide (NMMO), making its moisture is 20%～40%.
3. spinning solution described in 2 is filtered by prefilter after supercharging, under 70～110 ℃ through spinning head ejection, coagulation forming, drip washing in the aqueous solution of N-methylmorpholine oxide, curl, cut off, wash, oil, make the regenerative bamboo cellulose staple fibre after the drying; Perhaps
4. spinning solution described in 2 is filtered by the twice prefilter after supercharging, under 70～110 ℃ through spinning head ejection, coagulation forming, drip washing in the aqueous solution of N-methylmorpholine oxide, oil, be wound into tin, make the regenerative bamboo cellulose long filament after the drying.
Described in the present invention high-energy ray can be gamma ray projector or electron ray.Described antioxidant can be n-propyl gallate, ditert-butylhydro quinone, dibutyl hydroxy toluene or butylated hydroxy anisole.
Good effect of the present invention is as follows:
1, papermaking level bamboo pulp price only is about 1/3rd of a fibre-grade bamboo pulp price in the market, therefore, the bamboo fibre that the present invention makes be that the bamboo fibre that raw material adopts solvent method to make is compared with the fibre-grade bamboo pulp, production cost can significantly reduce.
2, the present invention adopts high-energy radiation that the papermaking level bamboo pulp is handled, and not only technological process is short, environmentally safe, and processing cost is low.
3, the present invention can regulate the average degree of polymerization of papermaking level bamboo pulp by the absorbed dose of radiation of control high-energy radiation in a big way, satisfy of the different requirements of the fiber of different purposes to the polymerizable raw material degree, bamboo pulp after the processing is easy to swelling and dissolving in the N-methylmorpholine oxide water solution, thereby can improve the concentration of spinning solution, production efficiency is improved.
4, the present invention adopts twice to filter to strengthen the filtration to spinning solution, and the filter type simple and feasible has solved the higher harmful effect to spinning of papermaking level bamboo pulp impurity content, has guaranteed the quality of spinning solution, makes the spinnability of spinning solution obviously improve.
The specific embodiment
To help to understand the present invention by following examples, but be not limited to content of the present invention.
Embodiment 1
With average degree of polymerization is that 1200 commercially available papermaking level bamboo pulp is put into
60Irradiation in the Co gamma ray projector, control irradiation absorbed dose of radiation is 5KGy, the average degree of polymerization of bamboo pulp drops to 690 behind the irradiation, adopts the bamboo pulp of cutting after dregs of rice machine will be handled to be cut into the small pieces of 4～6cm * 4～6cm.
Inspissation is to 135kg under reduced pressure with the 200kgNMMO aqueous solution (weight ratio of NMMO and water is 1), and making its moisture is 26% (concentration that is NMMO is 74%);
Place 300 liter polymeric kettles to mix through radiation treatment and the bamboo pulp of cutting into pieces and 135kg the NMMO aqueous solution of inspissation with 15.7kg is above-mentioned, the still temperature is 80 ℃.For preventing oxidation, add the 125g n-propyl gallate simultaneously.Turn on agitator and to control its rotating speed be 110r/min, vacuum system is connected in even back to be mixed makes vacuum maintain-9 * 10
4Pa, and be warming up to 100 ℃ gradually.After 4 hours, when the water yield of extracting out reaches 20Kg, stop to stir and stopping to vacuumize, obtain consoluet amber transparent spinning solution.
With above-mentioned spinning solution, be under 95 ℃ the condition, to be 29.4 * 10 at spinning temperature through pressure
4The nitrogen of Pa is pressed into booster pump, after the booster pump supercharging, by filtering accuracy is that the first road candle prefilter of 40 μ m filters and filtering accuracy is to enter measuring pump after the second road candle prefilter of 20 μ m filters, by 1000 holes * Φ 0.15mm spinning head ejection, after the stoste thread of ejection is the air gap of 100mm through length, enter and contain 10%N-methyl morpholine oxide and 90% water, temperature is 20 ℃, length is solidification forming in the coagulating bath of 2m, and the tow of solidification forming is through drip washing, curl, cut off, washing, oil, making line density after the drying is 1.9dtex, doing by force is 3.5cN/dtex, the dry state percentage elongation is 10% regenerated bamboo fiber.
Embodiment 2
With average degree of polymerization is that 1200 commercially available papermaking level bamboo pulp is put into
60Irradiation in the Co gamma ray projector, control irradiation absorbed dose of radiation is 30KGy, the average degree of polymerization of bamboo pulp drops to 330 behind the irradiation, adopts the bamboo pulp of cutting after dregs of rice machine will be handled to be cut into the small pieces of 4～6cm * 4～6cm.
(weight ratio of NMMO and water is 1, and inspissation is to 135kg under reduced pressure, and making its moisture is 26% (concentration that is NMMO is 74%) with the 200kgNMMO aqueous solution;
Place 300 liter polymeric kettles to mix through radiation treatment and the bamboo pulp of cutting into pieces and 135kg the NMMO aqueous solution of inspissation with 20.3kg is above-mentioned, the still temperature is 80 ℃.For preventing oxidation, add the 125g n-propyl gallate simultaneously.Turn on agitator and to control its rotating speed be 110r/min, vacuum system is connected in even back to be mixed makes vacuum maintain-9 * 10
4Pa, and be warming up to 100 ℃ gradually.3.5 after hour, when the water yield of extracting out reaches 20Kg, stop to stir and stopping to vacuumize, obtain consoluet amber transparent spinning solution.
With above-mentioned spinning solution, be under 90 ℃ the condition, to be 29.4 * 10 at spinning temperature through pressure
4The nitrogen of Pa is pressed into booster pump, after the booster pump supercharging, by filtering accuracy is that the first road candle prefilter of 40 μ m filters and filtering accuracy is to enter measuring pump after the second road candle prefilter of 20 μ m filters, by 1000 holes * Φ 0.15mm spinning head ejection, after the stoste thread of ejection is the air gap of 100mm through length, enter and contain 10%N-methyl morpholine oxide and 90% water, temperature is 20 ℃, length is solidification forming in the coagulating bath of 2m, and the tow of solidification forming is through drip washing, curl, cut off, washing, oil, making line density after the drying is 1.9dtex, doing by force is 2.8cN/dtex, the dry state percentage elongation is 9% regenerated bamboo fiber.
Embodiment 3
With embodiment 1 described spinning solution, be under 92 ℃ the condition, to be 29.4 * 10 at spinning temperature through pressure
4The nitrogen of Pa is pressed into booster pump, after the booster pump supercharging, by filtering accuracy is that the first road candle prefilter of 40 μ m filters and filtering accuracy is to enter measuring pump after the second road candle prefilter of 20 μ m filters, by 36 holes * Φ 0.15mm spinning head ejection, after the stoste thread of ejection is the air gap of 80mm through length, enter and contain 10%N-methyl morpholine oxide and 90% water, temperature is 20 ℃, length is solidification forming in the coagulating bath of 2m, and the tow of solidification forming is through drip washing, oil, be wound into tube, making specification after the drying is 150dtex/36F, doing by force is 3.6cN/dtex, the dry state percentage elongation is 10% regenerative bamboo cellulose long filament.
Embodiment 4
Substantially the same manner as Example 1, just change antioxidant 125g n-propyl gallate into the 125g ditert-butylhydro quinone.The regenerated bamboo fiber line density that makes is 1.9dtex, do strong for 3.4cN/dtex, dry state percentage elongation be 10%.
Comparative Examples 1
To be the small pieces that 1200 papermaking level bamboo pulp is cut into 4～6cm * 4～6cm without the average degree of polymerization of radiation treatment, inspissation is to 135kg under reduced pressure with the 200kgNMMO aqueous solution (weight ratio of NMMO and water is 1), and making its moisture is 26% (concentration that is NMMO is 74%);
Place 300 liter polymeric kettles to mix the above-mentioned pulp small pieces of 7.3kg and 135kg the NMMO aqueous solution of inspissation, the still temperature is 80 ℃.For preventing oxidation, add the 125g n-propyl gallate simultaneously.Turn on agitator and to control its rotating speed be 110r/min, vacuum system is connected in even back to be mixed makes vacuum maintain-9 * 10
4Pa, and be warming up to 105 ℃ gradually.After 6 hours, when the water yield of extracting out reaches 20Kg, stop to stir and stopping to vacuumize, still have not consoluet bamboo cellulose in the spinning solution that obtains, the spinning solution transparency is not good enough, adopt embodiment 1 described method to carry out spinning, spinning is easily breaked end, and the line density of gained regenerated bamboo fiber is that 1.6dtex, the dried strong 3.0cN/dtex of being, dry state percentage elongation are 6.5%.
Claims (4)
1, a kind ofly directly make the method for regenerated bamboo fiber, it is characterized in that adopting following (1)～(3), perhaps (1)～(2) and (4) two kinds of methods by the papermaking level bamboo pulp:
(1) average degree of polymerization is handled greater than 1000 papermaking level bamboo pulp employing high-energy ray irradiation, the average degree of polymerization of bamboo pulp is reduced, described high-energy ray is gamma ray projector or electron ray;
(2) bamboo pulp after handling described in (1) is ground into behind the small pieces with moisture be that the aqueous solution and the antioxidant of 26%～40% N-methylmorpholine oxide mixes under 70～115 ℃, vacuumize the moisture in the system of sloughing, generate transparent bubble-free spinning solution, described bamboo pulp, moisture is that the aqueous solution of 26%～40% N-methylmorpholine oxide and the weight ratio of antioxidant are followed successively by 5～25: 100: 0.01～0.2, and described antioxidant is a n-propyl gallate, ditert-butylhydro quinone, dibutyl hydroxy toluene or butylated hydroxy anisole.
(3) spinning solution described in (2) is successively filtered by the twice prefilter after supercharging, under 70～110 ℃,, coagulation forming, drip washing in the aqueous solution of N-methylmorpholine oxide, curl, cut off, wash, oil, make the regenerative bamboo cellulose staple fibre after the drying through spinning head ejection; Or
(4) spinning solution described in (2) is successively filtered by the twice prefilter after supercharging, under 70～110 ℃,, coagulation forming, drip washing in the aqueous solution of N-methylmorpholine oxide, make the regenerative bamboo cellulose long filament after oiling, be wound into tube, drying through spinning head ejection.
2, manufacture method as claimed in claim 1 is characterized in that the irradiation absorbed dose of radiation is 0.2～100kGy.
3, manufacture method as claimed in claim 1 is characterized in that the irradiation absorbed dose of radiation is 0.5～50kGy.
4, manufacture method as claimed in claim 1 is characterized in that the irradiation absorbed dose of radiation is 2～10kGy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100267681A CN100503907C (en) | 2006-05-22 | 2006-05-22 | Method for direct manufacturing regenerated bamboo fiber from papermaking-level bamboo pulp dregs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100267681A CN100503907C (en) | 2006-05-22 | 2006-05-22 | Method for direct manufacturing regenerated bamboo fiber from papermaking-level bamboo pulp dregs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1851115A CN1851115A (en) | 2006-10-25 |
| CN100503907C true CN100503907C (en) | 2009-06-24 |
Family
ID=37132616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100267681A Active CN100503907C (en) | 2006-05-22 | 2006-05-22 | Method for direct manufacturing regenerated bamboo fiber from papermaking-level bamboo pulp dregs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100503907C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT505492B1 (en) * | 2007-07-11 | 2014-06-15 | Chemiefaser Lenzing Ag | METHOD FOR THE PRODUCTION OF CELLULOSIC FORM BODIES USING BAMBOO PAPER PULP AND FORM BODY FROM THIS METHOD |
| CN101694019B (en) | 2009-09-30 | 2011-08-10 | 上海里奥纤维企业发展有限公司 | Solvent method high-wet-modulus bamboo fiber and preparation method thereof |
| CN102121205B (en) * | 2010-12-21 | 2012-03-21 | 张金 | Wood and bamboo fiber mercerizing pulp and preparation method thereof |
| CN104109910A (en) * | 2013-11-22 | 2014-10-22 | 唐山三友集团兴达化纤有限公司 | Method for producing viscose fiber from pulp used for papermaking |
| CN107955985B (en) * | 2017-12-12 | 2021-03-16 | 湖南工程学院 | Preparation method of bamboo charcoal fiber |
| CN108677581A (en) * | 2018-04-25 | 2018-10-19 | 武汉水木弘新材料有限公司 | The method for preparing low polymerization degree low crystallinity cellulose using high-energy electron beam irradiation |
| CN108998845B (en) * | 2018-06-28 | 2021-04-09 | 东莞市春藤实业有限公司 | High-water-absorption and high-air-permeability biomass fiber and preparation method thereof |
| CN113529195A (en) * | 2021-06-17 | 2021-10-22 | 杭州融凯盛科技有限公司 | Method for producing Lyocell bamboo fiber |
-
2006
- 2006-05-22 CN CNB2006100267681A patent/CN100503907C/en active Active
Non-Patent Citations (8)
| Title |
|---|
| 凝固浴温度对有机溶剂法再生竹纤维素纤维结构与性能的影响. 冯坤，杨革生，邵惠丽，胡学超.国际纺织导报，第2期. 2006 |
| 凝固浴温度对有机溶剂法再生竹纤维素纤维结构与性能的影响. 冯坤，杨革生，邵惠丽，胡学超.国际纺织导报，第2期. 2006 * |
| 木质纤维原料预处理技术研究进展. 张鑫，刘岩.纤维素科学与技术，第13卷第2期. 2005 |
| 木质纤维原料预处理技术研究进展. 张鑫，刘岩.纤维素科学与技术，第13卷第2期. 2005 * |
| 电子束辐射技术在粘胶工业中的应用. 周瑞敏，唐述祥.辐射研究与辐射工艺学报，第19卷第4期. 2001 |
| 电子束辐射技术在粘胶工业中的应用. 周瑞敏，唐述祥.辐射研究与辐射工艺学报，第19卷第4期. 2001 * |
| 纤维素的辐射裂解及其化学性质. 寿红霞.核技术，第7期. 1987 |
| 纤维素的辐射裂解及其化学性质. 寿红霞.核技术，第7期. 1987 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1851115A (en) | 2006-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100503907C (en) | Method for direct manufacturing regenerated bamboo fiber from papermaking-level bamboo pulp dregs | |
| CN100395384C (en) | Method for fabricating fiber of regenerative bamboo cellulose | |
| CN101476166B (en) | Improved preparation of cellulose spinning solution with ion liquid as solvent | |
| CN101838861B (en) | Method for preparing cellulose fiber | |
| CN109402815B (en) | Graphene composite fibre yarn and its preparation method and application | |
| CN108893796A (en) | A kind of plant source modified cellulose fibre | |
| CN101089249A (en) | Preparation and application of cellulose mixed fibre using ion liquid as solvent | |
| CN104120507A (en) | Preparation method of lignin-based electrostatic blended materials | |
| CN101220523A (en) | Method for manufacturing cellulose fibroin composite fiber by using solvent method | |
| CN103387689A (en) | Method for preparing nanocellulose fiber optical transparent membrane material from peanut hulls | |
| CN101230493A (en) | Solvent preparation cellulose bamboo charcoal fibre and use thereof | |
| CN112779612B (en) | Efficient production and manufacturing method and equipment for lyocell fibers | |
| US20180134851A1 (en) | Process for preparing cellulose solution and equipment therefor | |
| CN105525376A (en) | Regenerated cellulose fiber and preparation method thereof | |
| CN104947244A (en) | Method for extracting and preparing lignin composite nano fibers in situ | |
| CN101230494A (en) | Solvent preparation cellulose blending fibre and use thereof | |
| CN103556255B (en) | A kind of bamboo charcoal cellulose fiber and preparation method thereof | |
| TWI619863B (en) | Method for preparing bamboo pulp cellulose non-woven fabric with deodorizing function | |
| CN110760943B (en) | Preparation and application of fresh flower fiber filament for spinning | |
| CN112410908A (en) | Protein modified cellulose composite fiber and preparation method and application thereof | |
| CN103556248A (en) | Bamboo charcoal Lyocell fiber and preparation process thereof | |
| CN102425014B (en) | Method for preparing loofah sponge viscose fibers | |
| TW201627546A (en) | Spunbond method for producing non-woven fabric with deodorant feature from bamboo cellulose | |
| CN109234828A (en) | A kind of solvent method high-wet-modulus cotton fiber and preparation method thereof | |
| CN101089250A (en) | Preparation and application of bamboo pulp fibre using ion liquid as solvent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200409 Address after: 223400 Lianshui County of Huaian City, Jiangsu Province Industrial District West Road on the north side of glory Patentee after: NUFIBER (HUAI'AN) TEXTILE TECHNOLOGY Co.,Ltd. Address before: 200051 No. 1882, Shanghai, West Yan'an Road Patentee before: DONGHUA University |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200605 Address after: Room 201-2, building 2, No. 290, Xingci first road, Hangzhou Bay New District, Ningbo City, Zhejiang Province Patentee after: Zhejiang lonsel Fiber Technology Co., Ltd Address before: 223400 Lianshui County of Huaian City, Jiangsu Province Industrial District West Road on the north side of glory Patentee before: NUFIBER (HUAI'AN) TEXTILE TECHNOLOGY Co.,Ltd. |