CN103938290A - Preparation method of hollow staple fiber - Google Patents
Preparation method of hollow staple fiber Download PDFInfo
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- CN103938290A CN103938290A CN201410070441.9A CN201410070441A CN103938290A CN 103938290 A CN103938290 A CN 103938290A CN 201410070441 A CN201410070441 A CN 201410070441A CN 103938290 A CN103938290 A CN 103938290A
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Abstract
The invention provides a preparation method of a hollow staple fiber. The method comprises the following steps: 1, alkalizing a cotton pulp by an alkali to obtain alkali cellulose, etiolating the alkali cellulose by carbon disulfide for 45-55min, adding water, and discharging to obtain a viscose solution, wherein the mass of carbon disulfide is 28-32% of the mass of cellulose in the alkali cellulose; 2, dissolving the viscous solution, filtering for foam removal, filtering, adding a foaming agent, and uniformly mixing to obtain a spinning solution; and 3, spinning the spinning solution in a coagulation bath through a wet spinning technology to obtain the hollow staple fiber. In the invention, a denaturant is not needed; spinning is instantly carried out after adding the foaming agent, so the untoward phenomenon caused by long time retention of the foaming agent in the spinning solution is avoided; and the method also has the advantages of technology simplification, cost reduction, environmental protection, and good application prospect.
Description
Technical field
the present invention relates to a kind of fiber preparation field, relate more specifically to a kind of preparation method of hollow viscose staple fibre.
Background technology
doughnut is that a kind of fiber axis is to the fiber with tubular cavity.Doughnut on current piece market is mostly synthetic fiber, and its goods exist the shortcomings such as moisture absorption is low, antistatic behaviour is poor, easy pilling.So exploitation good hygroscopicity, antistatic behaviour viscose glue doughnut good, phozy balling-up are a kind of active demands in market.Compared with common viscose fiber, Hollow Viscose Fiber has the following advantages: Hollow Viscose Fiber is approximately lighter by 25% than common viscose fiber; Water-retaining property is than common viscose fiber large 30% to 40%; The spreadability of fabric, warming thermal insulation, flexibility, elasticity, bulkiness, gas permeability are all good than common viscose fiber; Fiber spinnability is good, can greatly improve spinnability and the taking of synthetic fiber.Thereby doughnut obtains people's extensive use.
the patent No. is the manufacture method that the patent of invention of CN 101089256A discloses a kind of high-performance hollow cellulose fibre, and its method is with adding salt blowing agent in denaturant, course of dissolution in the yellow step in cellulose fibre production process.But as everybody knows, in the course of dissolution that also needs tens hours from spinning, adding salt can make viscose solution accelerate maturation, the filtration of viscose solution and spinnability all can be subject to suitable adverse influence.Secondly, all contain salt from the viscose glue being dissolved into all containers of spinning, the cleaning amount that this has just increased when kind is turned, causes waste, also makes troubles to production.
Summary of the invention
for overcoming the problems referred to above of the prior art, the invention provides a kind of preparation method of hollow viscose staple fibre, its technique is simpler, and more environmental protection and cost are lower, and product quality is more excellent.
the technical solution used in the present invention is: a kind of preparation method of hollow viscose staple fibre, comprises the following steps:
(1) with alkali, Cotton Pulp is carried out to basification and make alkali cellulose, with carbon disulfide, alkali cellulose being carried out to yellow again processes 45 ~ 55 minutes, add water and make viscose solution, wherein the quality of carbon disulfide be in alkali cellulose cellulose quality 28 ~ 32%, preferably, the quality of carbon disulfide is 28 ~ 32% of alpha cellulose in alkali cellulose (alpha-cellulose, first fibre) quality;
(2) by the viscose solution obtaining in step (1) through dissolving, filtering deaeration, refilter after processing, add blowing agent and mix obtaining spinning solution;
(3) by the spinning solution obtaining in step (2) via wet spinning technology spinning in coagulating bath, make hollow viscose staple fibre.
further, in step (1), the alkali that basification is used is sodium hydroxide solution.In the present invention, use the aqueous slkali after ionic membrane filters to make impurity still less, product quality is better.
preferably, blowing agent is that mass fraction is 20 ~ 30% aqueous sodium carbonate.Blowing agent of the present invention is that technical grade natrium carbonicum calcinatum is joined in deionized water formulated.
more preferably, the quality of blowing agent is viscose solution 20 ~ 30%.
further, coagulating bath is mixed by sulfuric acid, sodium sulphate, zinc sulfate and water.
preferably, in coagulating bath, the content of sulfuric acid is 100 ~ 110 g/L, and the content of sodium sulphate is 280 ~ 300 g/L, and the content of zinc sulfate is 10 ~ 12 g/L.
more preferably, the temperature of coagulating bath is 40 ~ 45 DEG C.The extremes of temperature of coagulating bath all can cause adverse effect to product.
in the present invention, after maturation and deaeration, cellulose xanthate solution falling ball viscosity is 50 ~ 60 seconds (2mm steel ball is by the time of 20cm liquid height).
the concrete preparation method of hollow viscose staple fibre of the present invention is: cellulose alkalization, yellow, dissolving, once filtration, secondary filter, maturation and deaeration, the injection of spinning front filtration, blowing agent and mixing, wet spinning, plasticizing drawing-off, cut-out, post processing, drying, packing.Unlike the prior art, the present invention is the interpolation mixed processes that carries out blowing agent before spinning, effect is blowing agent is added quantitatively and be mixed into equably after spinning solution, carry out immediately spinning, make the blowing agent can be to not unfavorable to product because being present in for a long time in spinning solution, and do not need to use denaturant, reduced cost, also can avoid filtering the bad phenomenon that product is caused to adverse effect of deaeration effect.
compared with prior art, the present invention has following advantages: in the preparation method of hollow viscose staple fibre provided by the present invention, without adding denaturant, and blowing agent adds operation to carry out before viscose solution enters spinning machine, thereby salt blowing agent contact viscose glue only has a few minutes, do not affect maturation, just need not increase chemical industry material consumption yet and improve viscose quality.The concrete advantage that the present invention brings comprises: the one, reduce the amount that adds material, and do not need denaturant; The 2nd, can not affect filtration and spinning,, in keeping good product performance, simplify technique, reduced cost, reduce pollution.
Detailed description of the invention
below in conjunction with specific embodiment, the present invention is described in further detail, so that those skilled in the art can understand the present invention better, thereby protection scope of the present invention is made to more explicit defining.
embodiment 1
1. the preparation of spinning solution: taking Cotton Pulp as raw material, under the effect of liquid caustic soda (sodium hydrate aqueous solution), through pulverizing, alkalization makes alkali cellulose, carry out yellow with the carbon disulfide that accounts for the fine quality 32% of first in alkali cellulose, the discharging that adds water after yellow 50min obtains viscose solution, through dissolving, filter deaeration, the average viscosity of cellulose xanthate solution is 52 seconds, spin after front filtration, to add (employing injection system) mass fraction be 20% aqueous sodium carbonate also mixes and makes spinning solution, the mass ratio that blowing agent (sodium carbonate liquor) accounts for viscose solution is 26%.
2. spinning: use aperture 0.05mm spinning head by aforementioned spinning solution, spinning moulding in the coagulating bath (aqueous solution) of 40 DEG C of temperature, sulfuric acid content 102 g/L, sodium sulphate content 290 g/L, zinc sulfate content 10 g/L, and through effective stretching of 90%, produce the staple fibre of 1.33dtex.Fiber obtains cotton type hollow viscose staple fibre through pickling, washing, cut-out, desulfurization, upper wet goods post processing and after drying.Finished product main performance index is: the inclined to one side rate 1.50% of line; Dry fracture strength 2.20cN/dtex; Wet breaking strength 1.18cN/dtex; Dry elongation at break 16.8%; Hollow rate 99%; Regain 10.56%; Oil content 0.38%.
embodiment 2
1. the preparation of spinning solution: taking Cotton Pulp as raw material, under the effect of liquid caustic soda (sodium hydrate aqueous solution), through pulverizing, alkalization makes alkali cellulose, carry out yellow with the carbon disulfide that accounts for the fine quality 30% of first in alkali cellulose, the discharging that adds water after yellow 55min obtains viscose solution, through dissolving, filter deaeration, the average viscosity of cellulose xanthate solution is 56 seconds, spin after front filtration, add (adopt injection mode) mass fraction and be 25% aqueous sodium carbonate and mix and make spinning solution, the mass ratio that blowing agent (sodium carbonate liquor) accounts for viscose solution is 30%.
2. spinning: aperture 0.07mm spinning head for aforementioned spinning solution, spinning moulding in the coagulating bath (aqueous solution) of 43 DEG C of temperature, sulfuric acid content 100g/L, sodium sulphate content 280 g/L, zinc sulfate content 11 g/L, and through effective stretching of 85%, produce the staple fibre of 2.78dtex.Fiber obtains medium length type hollow viscose staple fibre through pickling, washing, cut-out, desulfurization, upper wet goods post processing and after drying.Finished product main performance index is: inclined to one side rate-1.08% of line; Dry fracture strength 2.10cN/dtex; Wet breaking strength 1.15cN/dtex; Dry elongation at break 16.3%; Hollow rate 99%; Regain 10.22%; Oil content 0.35%.
embodiment 3
1. the preparation of spinning solution: taking Cotton Pulp as raw material, under the effect of liquid caustic soda (sodium hydrate aqueous solution), make alkali cellulose through pulverizing, alkalizing, carry out yellow with the carbon disulfide that accounts for the fine quality 28% of first in alkali cellulose, the discharging that adds water after yellow 45min obtains viscose solution, through dissolving, filter deaeration, the average viscosity of cellulose xanthate solution is 57 seconds, spin after front filtration, add (adopt injection mode) mass fraction and be 30% aqueous sodium carbonate and mix and make spinning solution.The mass ratio that blowing agent (sodium carbonate liquor) accounts for viscose solution is 20%.
2. spinning: aperture 0.10mm spinning head for aforementioned spinning solution, spinning moulding in the coagulating bath (aqueous solution) of temperature 45 C, sulfuric acid content 110 g/L, sodium sulphate content 300g/L, zinc sulfate content 12 g/L, and through effective stretching of 86%, produce the staple fibre of 5.56dtex.Fiber obtains wool type hollow viscose staple fibre through pickling, washing, cut-out, desulfurization, upper wet goods post processing and after drying.Finished product main performance index is: the inclined to one side rate 1.44% of line; Dry fracture strength 2.03cN/dtex; Wet breaking strength 1.11cN/dtex; Dry elongation at break 15.4%; Hollow rate 99%; Regain 10.15%; Oil content 0.36%.
the invention discloses a kind of manufacture method of hollow viscose staple fibre, adopt high-quality cotton pulp to make viscose solution through alkalization, pulverizing, experienced, yellow, dissolving with batch viscose machine method, deaeration more after filtration,, refilter after, with injection system, blowing agent is mixed in viscose solution, carry out spinning with the wet-spinning frame of common viscose fiber, after cut-out, desulfurization, washing, upper wet goods are processed, then oven dry packing just obtains having the hollow viscose staple fibre compared with high-hygroscopicity and warmth retention property.
above specific embodiment of the present invention is illustrated; but protection content of the present invention is not only limited to above embodiment; under of the present invention, in technical field, the common knowledge of a GPRS just can be carried out diversified change within the scope of its technology main idea.
Claims (7)
1. a preparation method for hollow viscose staple fibre, is characterized in that, comprises the following steps:
(1) with alkali, Cotton Pulp is carried out to basification and make alkali cellulose, with carbon disulfide, described alkali cellulose being carried out to yellow again processes 45 ~ 55 minutes, add water and make viscose solution, the quality of wherein said carbon disulfide be in described alkali cellulose cellulose quality 28 ~ 32%;
(2) by the viscose solution obtaining in step (1) through dissolving, filtering deaeration, refilter after processing, add blowing agent and mix obtaining spinning solution;
(3) by the spinning solution obtaining in step (2) via wet spinning technology spinning in coagulating bath, make hollow viscose staple fibre.
2. the preparation method of hollow viscose staple fibre according to claim 1, is characterized in that: in step (1), the alkali that described basification is used is sodium hydroxide solution.
3. the preparation method of hollow viscose staple fibre according to claim 1, is characterized in that: in step (2), described blowing agent is that mass fraction is 20 ~ 30% aqueous sodium carbonate.
4. according to the preparation method of the hollow viscose staple fibre described in claim 1 or 3, it is characterized in that: the quality of the described blowing agent of interpolation is viscose solution 20 ~ 30%.
5. the preparation method of hollow viscose staple fibre according to claim 1, is characterized in that: described coagulating bath is mixed by sulfuric acid, sodium sulphate, zinc sulfate and water.
6. the preparation method of hollow viscose staple fibre according to claim 5, is characterized in that: in described coagulating bath, the content of sulfuric acid is 100 ~ 110 g/L, and the content of described sodium sulphate is 280 ~ 300 g/L, and the content of described zinc sulfate is 10 ~ 12 g/L.
7. the preparation method of hollow viscose staple fibre according to claim 1 or 5, is characterized in that: the temperature of described coagulating bath is 40 ~ 45 DEG C.
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| CN201410070441.9A CN103938290A (en) | 2014-02-28 | 2014-02-28 | Preparation method of hollow staple fiber |
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| CN201410070441.9A CN103938290A (en) | 2014-02-28 | 2014-02-28 | Preparation method of hollow staple fiber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106591991A (en) * | 2016-12-15 | 2017-04-26 | 山东银鹰化纤有限公司 | Production method of bamboo joint type hollow bamboo viscose fibers |
| CN106757462A (en) * | 2016-12-15 | 2017-05-31 | 山东银鹰化纤有限公司 | A kind of preparation method for inhaling color Hollow Viscose Fiber |
Citations (6)
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| JPS4820165B1 (en) * | 1969-10-06 | 1973-06-19 | ||
| US4129679A (en) * | 1969-11-27 | 1978-12-12 | Courtaulds Limited | Multi-limbed regenerated cellulose filaments |
| JPH0820165B2 (en) * | 1989-04-21 | 1996-03-04 | ホシザキ電機株式会社 | Ice storage type cold water supply device |
| CN101089256A (en) * | 2007-06-14 | 2007-12-19 | 山东海龙股份有限公司 | Manufacturing method of high performance hollow cellulose fibre |
| CN101580972A (en) * | 2009-06-09 | 2009-11-18 | 山东海龙股份有限公司 | Hollow bamboo charcoal cellulose fiber and preparation method thereof |
| CN101942706A (en) * | 2010-09-26 | 2011-01-12 | 河北吉藁化纤有限责任公司 | Temperature-adaptable bamboo pulp fibers and preparation method thereof |
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2014
- 2014-02-28 CN CN201410070441.9A patent/CN103938290A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| JPS4820165B1 (en) * | 1969-10-06 | 1973-06-19 | ||
| US4129679A (en) * | 1969-11-27 | 1978-12-12 | Courtaulds Limited | Multi-limbed regenerated cellulose filaments |
| JPH0820165B2 (en) * | 1989-04-21 | 1996-03-04 | ホシザキ電機株式会社 | Ice storage type cold water supply device |
| CN101089256A (en) * | 2007-06-14 | 2007-12-19 | 山东海龙股份有限公司 | Manufacturing method of high performance hollow cellulose fibre |
| CN101580972A (en) * | 2009-06-09 | 2009-11-18 | 山东海龙股份有限公司 | Hollow bamboo charcoal cellulose fiber and preparation method thereof |
| CN101942706A (en) * | 2010-09-26 | 2011-01-12 | 河北吉藁化纤有限责任公司 | Temperature-adaptable bamboo pulp fibers and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106591991A (en) * | 2016-12-15 | 2017-04-26 | 山东银鹰化纤有限公司 | Production method of bamboo joint type hollow bamboo viscose fibers |
| CN106757462A (en) * | 2016-12-15 | 2017-05-31 | 山东银鹰化纤有限公司 | A kind of preparation method for inhaling color Hollow Viscose Fiber |
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Owner name: SHANGHAI HENGJIA TEXTILE CO., LTD. Free format text: FORMER OWNER: SUZHOU HENGGUANG CHEMICAL FIBER CO., LTD. Effective date: 20141208 |
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Effective date of registration: 20141208 Address after: 200336 7j28 room, No. 2299 World Trade Center, West Yan'an Road, Shanghai, Changning District Applicant after: Shanghai constant Textile Co., Ltd. Address before: 215437 Jiangsu city of Suzhou province Taicang city Shaxi town new road Yuewang Street Applicant before: Suzhou Hengguang Chemical Fiber Co., Ltd. |
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