CN109518291A - A kind of low-gravity viscose rayon and preparation method thereof - Google Patents
A kind of low-gravity viscose rayon and preparation method thereof Download PDFInfo
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- CN109518291A CN109518291A CN201811304222.7A CN201811304222A CN109518291A CN 109518291 A CN109518291 A CN 109518291A CN 201811304222 A CN201811304222 A CN 201811304222A CN 109518291 A CN109518291 A CN 109518291A
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- gravity
- low
- spinning
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- 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
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a kind of low-gravity viscose rayon and preparation method thereof, specific gravity≤1.20g/cm of the low-gravity viscose rayon3；The preparation method of the low-gravity viscose rayon, comprising the following steps: (1) sour reactant and soft water are uniformly dissolved according to the ratio of mass ratio 1:1~1.5, are filtered.(2) curing agent and soft water are diluted according to the ratio of 1:1~5, are uniformly mixed.(3) the sour reactant solution and the curing agent solution are blended before spinning with rayon spinning liquid, obtain co-blended spinning liquid.(4) the co-blended spinning liquid is frozen into as-spun fibre, the spinning stabilizer containing 10~50g/L in the spinning bath through spinning bath.(5) it post-processes: the as-spun fibre is obtained into the low-gravity viscose rayon through plasticizing, drawing-off, refining and drying.Low-gravity viscose rayon of the invention has many advantages, such as that low-gravity, highly hygroscopic, antistatic, feel is fluffy, form is elegant.
Description
Technical field
The present invention relates to viscose rayon technical fields, and in particular to a kind of low-gravity viscose rayon.
Background technique
Viscose rayon is a kind of degradable regenerative cellulose fibre.From the point of view of raw material resources, viscose rayon is with natural fine
Dimension element is the fiber of main material production, and raw material sources are extremely wide.And the raw material petroleum as synthetic fibers is in storage side
Face is limited, and depletion rate cumulative year after year.From properties of product, viscose rayon has good physical mechanical property and meets
The characteristics of hygienic requirements.With the blended aspect of synthetic fibers, viscose rayon not only alternative cotton, but also be better than cotton.From product ring
From the aspect of guarantor, viscose rayon can be converted to vapor and carbon dioxide by biological decomposition or by safe combustion, not will cause two
Secondary pollution.In terms of breed structure, viscose rayon can assign fiber wider performance by either physically or chemically processing.It produces
The innovation of product, the raising of quality and the raising of dye level, have widened the application field of viscose rayon significantly.
But since conventional viscose rayon specific gravity is in 1.5-1.6g/cm3, weight is larger, cause its in terms of style of the shape not
Has elegant fluffy characteristic, this disadvantage seriously hinders widening for its application field.
Summary of the invention
The first technical problem to be solved by the present invention is: in view of the deficienciess of the prior art, providing a kind of low ratio
Weight viscose rayon, product have many advantages, such as that low-gravity, highly hygroscopic, antistatic, feel is fluffy, form is elegant.
Second technical problem to be solved by this invention is: in view of the deficienciess of the prior art, providing a kind of low ratio
Weight viscose rayon preparation method, the product being prepared have low-gravity, highly hygroscopic, antistatic, feel is fluffy, form is elegant
The advantages that.
In order to solve the first technical problem mentioned above, the technical scheme is that
A kind of low-gravity viscose rayon, specific gravity≤1.20g/cm of the low-gravity viscose rayon3, dry breaking strength is
2.1~3.0CN/dtex, wet breaking strength are 1.1~1.6CN/dtex, and dry elongation at break is 16~25%, and line density is
1.0~6.0dtex.
To solve above-mentioned second technical problem, the technical scheme is that
The preparation method of the low-gravity viscose rayon, comprising the following steps:
(1) preparation of sour reactant solution: sour reactant and soft water are dissolved according to the ratio of mass ratio 1:1~1.5
It is even, and carry out plate-frame filtering.
(2) preparation of curing agent solution: curing agent and soft water are diluted according to the ratio of 1:1~5, are uniformly mixed.
(3) it prepares co-blended spinning liquid: the sour reactant solution and the curing agent solution is spun before spinning with viscose glue
Silk liquid is blended, and obtains co-blended spinning liquid.
(4) spinning moulding: the co-blended spinning liquid is frozen into as-spun fibre through spinning bath, contains 10 in the spinning bath
The spinning stabilizer of~50g/L.
(5) it post-processes: the as-spun fibre is obtained into the low-gravity viscose rayon through plasticizing, drawing-off, refining and drying.
As a kind of improved technical solution, the acid reactant is one of sodium carbonate, potassium carbonate, ammonium carbonate or several
Kind.
As a kind of improved technical solution, the curing agent is isopropanol, in cyclohexanol, neopelex
It is one or more of.
As a kind of improved technical solution, the spinning stabilizer is dimethylene amino monoethanolamine, octadecyl
One or more of amine, sodium ethylenediamine tetramethylenephosphonate.
As a kind of preferred technical solution, the adding proportion of the acid reactant be to the 10 of the amount of alpha-cellulose~
50wt%, the adding proportion of the curing agent are 1~10wt% to the amount of alpha-cellulose.
As a kind of improved technical solution, contain in the spinning bath: 100~150g/L of sulfuric acid, sodium sulphate 270~
350g/L, 10~40g/L of zinc sulfate, spinning stabilizer: 10~50g/L；The temperature of the spinning bath is 45~55 DEG C.
As a kind of preferred technical solution, the plate-frame filtering in the step (1) uses polypropylene fibre filter cloth；The polypropylene fibre filter
700~900g/m of grammes per square metre of cloth2, 3.5 ± 0.5mm of thickness.
As a kind of preferred technical solution, the preparation of rayon spinning liquid described in step (3), is by the degree of polymerization 500
~700 wood pulps rayon spinning liquid made of dipping, squeezing, crushing, experienced, yellow, grinding, filtering, deaeration.
As a kind of preferred technical solution, the index of the rayon spinning liquid are as follows: alpha-cellulose 9.00 ± 1.50% contains
Alkali 4.50 ± 1.00%, 45 ± 5s of viscosity (falling ball method), 6.5 ± 1.0ml of degree of ripeness (ammonium chloride method).
As a kind of preferred technical solution, the temperature of the acid reactant solution is 15~25 DEG C, and pH value is 9~12；
The temperature of the curing agent solution is 15~25 DEG C.
As a kind of preferred technical solution, the acid reactant solution, the curing agent solution using dynamic mixer,
The mode that static mixer combines is uniformly mixed before spinning with rayon spinning liquid.
As a kind of preferred technical solution, contain in the plasticizing-bath that the plasticizing process uses: 10~25g/L of sulfuric acid,
25~60g/L of sodium sulphate, 5~15g/L of zinc sulfate；The temperature of the plasticizing-bath is 95~100 DEG C.
As a kind of improved technical solution, the drying temperature is 110~140 DEG C.
A kind of specific prioritization scheme, in the step (6) refining process include: a washing, desulfurization, two washings, three washings,
It bleaches, oil.
By adopting the above-described technical solution, the beneficial effects of the present invention are:
Sour reactant and curing agent have been blended in rayon spinning liquid, has obtained when preparing low-gravity viscose rayon by the present invention
To co-blended spinning liquid, in spinning bath when solidification forming, sour reactant and the sulfuric acid reaction in coagulating bath generate co-blended spinning liquid
Carbon dioxide gas overflows after as-spun fibre tow inner inflatable forms cavity structure, makes fibre structure fluffyization, fiber specific gravity
It reduces.After reacted dose of viscose rayon tow of inflation extruding, with the evolution of gas, the cavity structure meeting of original bulking effect formation
There is substantial portion of retraction and collapse, can reduce after addition curing agent in rayon spinning liquid and slow down this retraction and collapse,
Be conducive to the holding and fixation of fluffy cavity structure, help the solidification for inflating the cavity structure of formation.In spinning moulding, spinning
Simultaneously and sulfuric acid reaction, reaction severe degree ratio is without sour reactant for cellulose sulfonate, the sour reactant that is added in silk bath
Spinning solution it is more violent, therefore, spinning stabilizer, which is added, in the present invention in spinning bath to be conducive to silk with slowed down reaction speed
The formation of fine structure inside item guarantees improvement and raising that the physical and mechanical property indexs of fiber are made, while improving fibre
Tie up the stability and spinnability of coagulation forming process.
The finished product viscose rayon that the present invention is prepared have low-gravity, highly hygroscopic, antistatic, feel is fluffy, form is floatd
The advantages that ease.The specific gravity of low-gravity viscose rayon of the invention can be accomplished under the premise of not influencing its physical mechanical property
≤1.20g/cm3, minimum to can achieve 1.02g/cm3。
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the fibre section figure of low-gravity viscose rayon of the invention under the microscope.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.It should be understood that these embodiments are merely to illustrate this hair
It is bright rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, art technology
Personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Fixed range.
By Fig. 1, it can be seen that, low-gravity viscose rayon of the invention is the fiber with many cavity structures.
Embodiment 1
A kind of low-gravity viscose rayon, the specific gravity 1.05g/cm of the low-gravity viscose rayon3, dry breaking strength is
2.2CN/dtex, wet breaking strength 1.35CN/dtex, dry elongation at break are 22%, line density 1.33dtex.
Embodiment 2
A kind of low-gravity viscose rayon, the specific gravity 1.12g/cm of the low-gravity viscose rayon3, dry breaking strength is
2.5CN/dtex, wet breaking strength 1.4CN/dtex, dry elongation at break are 23.5%, line density 3.33dtex.
Embodiment 3
Sour reactant sodium carbonate and soft water are uniformly dissolved according to the ratio of mass ratio 1:1.2, and carry out plate-frame filtering；Institute
The temperature for stating sour reactant solution is 20 DEG C, pH value 10.
Curing agent isopropanol and soft water are diluted according to the ratio of 1:2, are uniformly mixed；The temperature of the curing agent solution
Degree is 20 DEG C.
The degree of polymerization is made up in 600 wood pulps of dipping, squeezing, crushing, experienced, yellow, grinding, filtering, deaeration
Rayon spinning liquid.The index of the rayon spinning liquid are as follows: alpha-cellulose 9.50% contains alkali 4.50%, viscosity 46s (falling sphere
Method), degree of ripeness 6.7ml (ammonium chloride method).
The side that the sour reactant solution and the curing agent solution are combined using dynamic mixer, static mixer
Formula is uniformly mixed before spinning with rayon spinning liquid, obtains co-blended spinning liquid；The adding proportion of the acid reactant is pair
The 30wt% of the amount of alpha-cellulose, the adding proportion of the curing agent are the 6.5wt% to the amount of alpha-cellulose.
The co-blended spinning liquid is frozen into as-spun fibre through spinning bath, is contained in the spinning bath: sulfuric acid 125g/L, sulphur
Sour sodium 285g/L, zinc sulfate 25g/L, dimethylene amino monoethanolamine 25g/L.
The as-spun fibre is obtained into the low-gravity viscose rayon through plasticizing, drawing-off, refining and drying；The plasticizing-bath
In contain: sulfuric acid 18g/L, sodium sulphate 30g/L, zinc sulfate 10g/L；The temperature of the plasticizing-bath is 98 DEG C；The drying temperature
It is 125 DEG C.
Embodiment 4
Sour reactant potassium carbonate and soft water are uniformly dissolved according to the ratio of mass ratio 1:1.3, and carry out plate-frame filtering；Institute
The temperature for stating sour reactant solution is 22 DEG C, pH value 11.
Curing agent isopropanol and cyclohexanol and soft water are diluted according to the ratio of 1:1, are uniformly mixed；The curing agent
The temperature of solution is 22 DEG C.
The degree of polymerization is made up in 650 wood pulps of dipping, squeezing, crushing, experienced, yellow, grinding, filtering, deaeration
Rayon spinning liquid.The index of the rayon spinning liquid are as follows: alpha-cellulose 10.00% contains alkali 4.80%, viscosity 48s (falling sphere
Method), degree of ripeness 6.8ml (ammonium chloride method).
The side that the sour reactant solution and the curing agent solution are combined using dynamic mixer, static mixer
Formula is uniformly mixed before spinning with rayon spinning liquid, obtains co-blended spinning liquid；The adding proportion of the acid reactant is pair
The 25wt% of the amount of alpha-cellulose, the adding proportion of the curing agent are the 2wt% to the amount of alpha-cellulose.
The co-blended spinning liquid is frozen into as-spun fibre through spinning bath, is contained in the spinning bath: sulfuric acid 130g/L, sulphur
Sour sodium 300g/L, zinc sulfate 20g/L, octadecylamine 20g/L.
The as-spun fibre is obtained into the low-gravity viscose rayon through plasticizing, drawing-off, refining and drying；The plasticizing-bath
In contain: sulfuric acid 18g/L, sodium sulphate 35g/L, zinc sulfate 11g/L；The temperature of the plasticizing-bath is 100 DEG C；The drying temperature
It is 130 DEG C.
Embodiment 5
Sour reactant ammonium carbonate and soft water are uniformly dissolved according to the ratio of mass ratio 1:1.5, and carry out plate-frame filtering；Institute
The temperature for stating sour reactant solution is 25 DEG C, pH value 10.5.
Curing agent isopropanol, cyclohexanol, neopelex and soft water are diluted according to the ratio of 1:3.5,
It is uniformly mixed；The temperature of the curing agent solution is 25 DEG C.
The degree of polymerization is made up in 700 wood pulps of dipping, squeezing, crushing, experienced, yellow, grinding, filtering, deaeration
Rayon spinning liquid.The index of the rayon spinning liquid are as follows: alpha-cellulose 8.50% contains alkali 5.50%, viscosity 48s (falling sphere
Method), degree of ripeness 7.0ml (ammonium chloride method).
The side that the sour reactant solution and the curing agent solution are combined using dynamic mixer, static mixer
Formula is uniformly mixed before spinning with rayon spinning liquid, obtains co-blended spinning liquid；The adding proportion of the acid reactant is pair
The 35wt% of the amount of alpha-cellulose, the adding proportion of the curing agent are the 3wt% to the amount of alpha-cellulose.
The co-blended spinning liquid is frozen into as-spun fibre through spinning bath, is contained in the spinning bath: sulfuric acid 135g/L, sulphur
Sour sodium 320g/L, zinc sulfate 25g/L, sodium ethylenediamine tetramethylenephosphonate 30g/L.
The as-spun fibre is obtained into the low-gravity viscose rayon through plasticizing, drawing-off, refining and drying；The plasticizing-bath
In contain: sulfuric acid 22g/L, sodium sulphate 35g/L, zinc sulfate 11.5g/L；The temperature of the plasticizing-bath is 99 DEG C；The drying temperature
Degree is 132 DEG C.
Comparative experiments example 1
Comparative experiments example 1 as different from Example 3, without adding sour reactant and curing agent in rayon spinning liquid, is spun
Without addition stabilizer in spinning bath when silk.
Comparative experiments example 2
Comparative experiments example 2 is as different from Example 3, no in rayon spinning liquid to add sour reactant.
Comparative experiments example 3
Comparative experiments example 3 is as different from Example 3, no in rayon spinning liquid to add curing agent.
Comparative experiments example 4
Comparative experiments example 4 as different from Example 3, without addition stabilizer in spinning bath when spinning.
The performance indicator for the finished product viscose rayon that above-described embodiment 3-5 and comparative experiments example 1-3 are prepared is shown in Table 1.
Table 1
Claims (10)
1. a kind of low-gravity viscose rayon, it is characterised in that: specific gravity≤1.20g/cm of the low-gravity viscose rayon3, do disconnected
Resistance to spalling is 2.1~3.0CN/dtex, and wet breaking strength is 1.1~1.6CN/dtex, and dry elongation at break is 16~25%, line
Density is 1.0~6.0dtex.
2. the preparation method of low-gravity viscose rayon as described in claim 1, it is characterised in that the following steps are included:
(1) preparation of sour reactant solution: sour reactant and soft water are uniformly dissolved according to the ratio of mass ratio 1:1~1.5, mistake
Filter；
(2) preparation of curing agent solution: curing agent and soft water are diluted according to the ratio of 1:1~5, are uniformly mixed；
(3) prepare co-blended spinning liquid: by the sour reactant solution and the curing agent solution before spinning with rayon spinning liquid
It is blended, obtains co-blended spinning liquid；
(4) spinning moulding: being frozen into as-spun fibre through spinning bath for the co-blended spinning liquid, in the spinning bath containing 10~
The spinning stabilizer of 50g/L；
(5) it post-processes: the as-spun fibre is obtained into the low-gravity viscose rayon through plasticizing, drawing-off, refining and drying.
3. the preparation method of low-gravity viscose rayon as claimed in claim 2, it is characterised in that: the acid reactant is carbonic acid
One or more of sodium, potassium carbonate, ammonium carbonate.
4. the preparation method of low-gravity viscose rayon as claimed in claim 2, it is characterised in that: the curing agent is isopropyl
One or more of alcohol, cyclohexanol, neopelex.
5. the preparation method of low-gravity viscose rayon as claimed in claim 2, it is characterised in that: the spinning stabilizer is two
One or more of methene amido monoethanolamine, octadecylamine, sodium ethylenediamine tetramethylenephosphonate.
6. the preparation method of low-gravity viscose rayon as claimed in claim 2, it is characterised in that: the addition of the acid reactant
Ratio is 10~50wt% to the amount of alpha-cellulose, the adding proportion of the curing agent be to the 1 of the amount of alpha-cellulose~
10wt%.
7. the preparation method of low-gravity viscose rayon as claimed in claim 2, it is characterised in that contain in the spinning bath: sulphur
Acid 100~150g/L, 270~350g/L of sodium sulphate, 10~40g/L of zinc sulfate, spinning stabilizer: 10~50g/L；The spinning
The temperature of bath is 45~55 DEG C.
8. the preparation method of low-gravity viscose rayon as claimed in claim 2, it is characterised in that: the acid reactant solution
Temperature is 15~25 DEG C, and pH value is 9~12；The temperature of the curing agent solution is 15~25 DEG C.
9. the preparation method of low-gravity viscose rayon as claimed in claim 2, it is characterised in that the plasticizing process used
Contain in plasticizing-bath: 10~25g/L of sulfuric acid, 25~60g/L of sodium sulphate, 5~15g/L of zinc sulfate；The temperature of the plasticizing-bath is
95~100 DEG C.
10. the preparation method of low-gravity viscose rayon as claimed in claim 2, it is characterised in that: the drying temperature is 110
~140 DEG C.
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Citations (1)
| 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 |
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2018
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Patent Citations (1)
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| 刘程 等: "《表面活性剂应用手册》", 31 August 1995, 化学工业出版社 * |
| 胡相明 等: "《矿用充填堵漏风新型复合泡沫的研制》", 30 December 2014, 中国矿业大学出版社 * |
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Effective date of registration: 20211203 Address after: 224400 Jiangsu Yancheng Funing high tech Industrial Development Zone Aoyang Avenue Saideli (Yancheng) Fiber Co., Ltd Patentee after: Saideli (Yancheng) Fiber Co.,Ltd. Address before: 224400 No.1, Aoyang Avenue, high tech Zone, Funing County, Yancheng City, Jiangsu Province Patentee before: FUNING AOYANG TECHNOLOGY CO.,LTD. |