CN106702514B - A kind of short silk of regenerated celulose fibre - Google Patents
A kind of short silk of regenerated celulose fibre Download PDFInfo
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Abstract
The invention discloses a kind of short silks of regenerated celulose fibre, it is made by the spinning solution spinning obtained after the dissolution of cellulose amino acid methyl ester, meet following index: dry 2.1~2.4cN/dtex of breaking strength, 1.1~1.3cN/dtex of wet breaking strength, dry elongation at break 10~15%, the dry extension at break coefficient of variation 8~12%, residual sulfur content 0.Belong to high-tenacity low-elongation regenerated celulose fibre, there is good product performance, the characteristic without residual sulphur, application field includes garment material, high-intensitive stocking yarn, the people's livelihood industry such as sewing threads, tire cord.
Description
Technical field
The present invention is a kind of short silk of regenerated celulose fibre, and in particular in commercial process, by cellulose amino
The short silk of cellulose carbamate fibre, belongs to regenerated celulose fibre prepared by synthesis, dissolution and the spinning of formic acid esters
Production technical field.
Background technique
In textile industry field, viscose rayon is one of the fiber for realizing industrialized production at first, due to its good property
Can and cheap cost and rapidly developed.In traditional viscose glue production process, a certain number of pulp materials and lye
Effect generate alkali cellulose, then with CS2Synthetic cellulose xanthate acid is reacted, is walked through dissolution, mixing, filtering, deaeration and maturation etc.
Suddenly prepare viscose glue, then again through spinning, post-processing, etc. processes be made viscose short-thread, be related to cellulose xanthate synthesis,
Dissolution and spining technology.Since the synthesis of cellulose xanthate is needed using CS2, easily environment is impacted, therefore, to reduce
Environmental protection pressure, the synthetic technology of the cellulose carbamate of alternative fiber element sodium sulfonate, is increasingly becoming Textile Industry work
The emphasis and hot spot technology of industry energy conservation and environmental protection research.
The synthetic route of known cellulose carbamate includes: (1) using cellulose pulp and urea as raw material,
Synthesis method of fiber carbamate in atent solvent dimethylbenzene, such as: CN1687137(urea embedding inlay technique prepares cellulose amino first
Acid esters new process, 2005.10.26) and " synthesis of cellulose carbamate " (be recorded in " polymer material science and work
Journey ", the 4th phase of volume 21, in July, 2005)；(2) using cellulose pulp and urea as raw material, supercritical carbon dioxide fluid is to carry
Body completes esterification under the assistance of cosolvent and cellulose carbamate is made, such as: a kind of CN102702364A (fiber
The preparation method of plain carbamate, 2012.10.03), the preparation method of CN102766216A(cellulose carbamate,
2012.11.07) and the CN1775810(method for preparing cellulose carbamate using supercritical carbon dioxide,
2006.05.24)；(3) using cellulose and urea as raw material, cellulose carbamate is made after heated, reaction, drying,
Such as: a kind of preparation of cellulose carbamate of CN104072622A(and its dissolution in low temperature spinning process, 2014.10.01) and
A kind of method of the urea-modified cellulose of no coupling product of CN104497151A(, 2015.04.08), etc..In the work of viscose rayon
In industry production process, it is known that the process modification of single link can not measure its industrialized practical value, just with above-mentioned
For the synthetic technology of cellulose carbamate, existing open source literature only describes the synthesis road of cellulose carbamate
Line, but in actual industrial production, from cellulose carbamate to during obtaining regenerated celulose fibre, there is also
Such as: dissolution, deaeration, spinning, drying, all too many levels of post-processing, therefore, even if cellulose is prepared by said synthesis route
Carbamate can not also represent and thoroughly solve the problems, such as the energy conservation and environmental protection of industrialized production regenerated celulose fibre, also
It is likely to occur following situations: one, the regeneration that the spinning solution that cellulose carbamate is prepared obtains after spinning moulding is fine
The Testing index of cellulose fiber is difficult to meet the requirement of downstream product；Two, the regeneration that cellulose carbamate is prepared is fine
Cellulose fiber performance difference is larger, is not suitable with existing spinning head or draft apparatus during the spinning process, needs to put into again new
Equipment, the production cost increases.
A kind of method that regenerated celulose fibre is prepared by cellulose carbamate of patent document CN102691125A(,
2012.09.26) describe by cellulose carbamate through dissolution, freezing, defrosting, filtering, deaeration, spinning, solidification, washing,
The process that regenerated celulose fibre is obtained after drying, the dry breaking strength for the regenerated celulose fibre being prepared in the method
For 1.44~2.86cN/dtex, wet breaking strength is 0.46~0.60 cN/dtex, and dry elongation at break is 7~15%, from upper
It states data and can be seen that the preparation method and face following problems: one, the regeneration prepared by above-mentioned regenerated celulose fibre is fine
Cellulose fiber can not fully meet the requirement of the downstream product such as garment material, high-intensitive stocking yarn: dry breaking strength >=
2.1cN/dtex, wet breaking strength >=1.0cN/dtex, dry elongation at break > 12%；Two, the regeneration that this method is prepared is fine
Cellulose fiber belongs to low strong flatness type, and intensity and elongation are lower, and spinning is more difficult, in practical spinning process, can not lead to
Therefore the tow for crossing existing spinning head extrusion molding does not have industrial utility value.
Summary of the invention
The purpose of the present invention is to provide a kind of short silks of regenerated celulose fibre, are obtained using cellulose carbamate solvent
The obtained short silk of regenerated celulose fibre of the spinning solution spinning arrived, the short dry breaking strength of silk satisfaction of the regenerated celulose fibre >=
2.1cN/dtex, the characteristic of dry elongation at break≤12% belong to high-tenacity low-elongation viscose rayon, have good product performance, without residual
The characteristic of sulphur, application field include the people's livelihood articles such as garment material, high-intensitive stocking yarn, curtain.
The present invention is achieved through the following technical solutions: a kind of short silk of regenerated celulose fibre, by cellulose amino acid methyl ester
The spinning solution spinning that is obtained after dissolution and be made, meet following index:
Dry 2.1~2.4cN/dtex of breaking strength, 1.0~1.3cN/dtex of wet breaking strength,
Dry elongation at break 12~18%, the dry extension at break coefficient of variation 8~12%,
Residual sulfur content is 0.
The present invention is dissolved using cellulose amino acid methyl ester is made cellulose amino acid methyl ester solution (spinning solution), can replace
For the spinning solution of cellulose xanthate production, CS in viscose glue production technology is avoided2Use, through detect it is found that by this hair
Bright method obtains regenerated celulose fibre and belongs to high-tenacity low-elongation regenerated celulose fibre, has preferable wet strength and does strong
Degree is suitable for spinning various frivolous, smooth dress materials, high-intensitive stocking yarn, sewing threads etc., since refusal makes in production technology
Use CS2, therefore, residual sulfur content is zero in the viscose fiber filament that the present invention is prepared, and more highlights the green of textile product
Environmental protection.
The whiteness of the short silk of regenerated celulose fibre is 70~75%, and oil applying rate is 0.15~0.3%, and product has dye
Color performance is good, is not easy to form the characteristic of color difference.
Further, the dye uniformity of the short silk of the regenerated celulose fibre is greater than 3.5 grades, with even dyeing, fastly
It is especially prominent to be suitable for its effect when garment material field for the characteristic of speed.
Further, the regain of the short silk of the regenerated celulose fibre is 13~17%, and the characteristic with low water suction is used
In stocking yarn etc. in use, having good comfort level.
Further, the limit oxygen index of the short silk of the regenerated celulose fibre is 19~20%, has centainly fire-retardant
Property, when for fields such as garment material, knitted fabrics, the functionality of product can be enhanced, improve the surcharge and purposes of product.
Cellulose carbamate is dissolved using sodium hydroxide and zinc oxide aqueous solution for solution is existing, to produce spinning
The problem of solution rate of stoste is slow, dissolution energy consumption is high, is not suitable for industrialization large-scale production, the present invention is to cellulose amino acid
The dissolution of methyl esters is improved, and in the present invention, the dissolving step of the cellulose amino acid methyl ester includes:
A: cellulose carbamate is added in sodium hydrate aqueous solution, is stirred, and mix for the first time molten
Solution, obtains mixed once solution；
B: being added aluminium oxide into mixed once solution, be stirred, and second of mixed dissolution is carried out, at -5~5 DEG C
1~2h is freezed, secondary mixed solution is obtained；
C: secondary mixed solution is thawed to room temperature, obtains cellulose carbamate fibre spinning solution.
In the step A, the concentration of sodium hydrate aqueous solution is 6~10%, sodium hydrate solid and cellulose amino
The mass ratio of formic acid esters is (1~2): 1, in this naoh concentration range and sodium hydroxide and cellulose carbamate
Quality is than having preferable dissolubility in range.
In the step A, the temperature of first time mixed dissolution is -10~0 DEG C, and the time of first time mixed dissolution is
The dissolution for being advantageously selected for cellulose carbamate of 1~2h, above-mentioned solution temperature and time.
In the step B, the mass ratio of aluminium oxide and cellulose amino acid formic acid esters is 1:(4~8), it is above-mentioned specific
Process parameters range guarantee solution rate it is most fast, can also be able to maintain in course of dissolution in higher operation temperature.
Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that
(1) it is extensive can not to adapt to industrialization for the technique that the present invention solves existing production cellulose carbamate fibre
The problem of production, proposes the production process of a short silk of the higher regenerated celulose fibre of completeness, the regeneration being prepared
The short silk of cellulose fibre meets dry breaking strength >=2.1cN/dtex, and the characteristic of dry elongation at break≤12% belongs to high-strength flatness
Type regenerated celulose fibre, has good product performance, the characteristic without residual sulphur, and application field includes garment material, high-intensitive needle
Weaving yarn, the people's livelihood industry such as sewing threads, tire cord, spinning solution good spinnability, the regenerated celulose fibre obtained through spinning
Short silk good product performance, is very suitable to industrialization large-scale production, takes into account production cost, production efficiency and product quality.
(2) present invention solve it is existing cellulose carbamate is dissolved using sodium hydroxide and zinc oxide aqueous solution,
The problem of solution rate to produce spinning solution is slow, dissolution energy consumption is high, is not suitable for industrialization large-scale production, by specific
Processing step and technological parameter form the higher cellulose carbamate fibre spinning solution production process of a completeness,
The dissolution operation temperature of cellulose carbamate is higher (- 5~5 DEG C), which can be improved cellulose carbamate
Solution rate, and reduce energy consumption, improve production efficiency, it is suitble to industrialization large-scale production.
(3) the short silk of regenerated celulose fibre of the present invention has preferable application value, from the point of view of its index parameter,
Dye uniformity has even dyeing, quick characteristic at 3.5 grades or more, be suitable for garment material field when its effect especially
It is prominent；Regain meets 13~17%, and the characteristic with high water absorption can improve the comfort level of fabric；Limit oxygen index satisfaction 19~
20%, have certain anti-flammability, when for fields such as garment material, household items, the functionality of product can be enhanced, improve and produce
Product value and purposes.
(4) in production technology of the invention, CS2 is not used, therefore, from the index parameter of the short silk of regenerated celulose fibre
From the point of view of, it is suitable for being widely used to promote that residual sulfur content zero, which more highlights the environmentally protective of textile product,.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1:
The present embodiment proposes a kind of short silk of regenerated celulose fibre, and the short silk of the regenerated celulose fibre is by cellulose amino
The spinning solution spinning that is obtained after the dissolution of sour methyl esters and be made, meet following index:
Dry breaking strength 2.1cN/dtex, wet breaking strength 1.0cN/dtex,
Dry elongation at break 12%, the dry extension at break coefficient of variation 8%,
Residual sulfur content is 0.
Embodiment 2:
The spinning that the short silk of the regenerated celulose fibre that the present embodiment is related to obtains after being dissolved by cellulose amino acid methyl ester is former
Liquid spinning and be made, meet following index:
Dry breaking strength 2.4cN/dtex, wet breaking strength 1.3cN/dtex,
Dry elongation at break 18%, the dry extension at break coefficient of variation 12%,
Residual sulfur content is 0.
Embodiment 3:
The present embodiment on the basis of embodiment 1, has carried out other index parameters of the short silk of regenerated celulose fibre excellent
Change, as follows: the whiteness of the short silk of regenerated celulose fibre is 70%, oil applying rate 0.15%.
Embodiment 4:
The present embodiment has carried out other index parameters of the short silk of regenerated celulose fibre excellent on the basis of embodiment 2
Change, as follows: the whiteness of the short silk of regenerated celulose fibre is 75%, oil applying rate 0.3%.
Embodiment 5:
The present embodiment is on the basis of embodiment 1 defined the dye uniformity of the short silk of regenerated celulose fibre,
In the present embodiment, the dye uniformity of the short silk of regenerated celulose fibre is 3.5 grades.
Embodiment 6:
The present embodiment is defined the dye uniformity of the short silk of regenerated celulose fibre on the basis of embodiment 2,
In the present embodiment, the dye uniformity of the short silk of regenerated celulose fibre is 5 grades.
Embodiment 7:
The present embodiment is on the basis of embodiment 1 defined the regain of the short silk of regenerated celulose fibre, this reality
It applies in example, the regain of the short silk of regenerated celulose fibre is 13%.
Embodiment 8:
The present embodiment is defined the regain of the short silk of regenerated celulose fibre on the basis of embodiment 2, this reality
It applies in example, the regain of the short silk of regenerated celulose fibre is 17%.
Embodiment 9:
The present embodiment is on the basis of embodiment 1 defined the limit oxygen index of the short silk of regenerated celulose fibre,
In the present embodiment, the limit oxygen index of the short silk of regenerated celulose fibre is 19%.
Embodiment 10:
The present embodiment is defined the limit oxygen index of the short silk of regenerated celulose fibre on the basis of embodiment 2,
In the present embodiment, the limit oxygen index of the short silk of regenerated celulose fibre is 20%.
Embodiment 11:
The present embodiment on the basis of embodiment 1, proposes cellulose ammonia in the short silk production process of regenerated celulose fibre
The dissolving step of base acid methyl esters includes:
A: cellulose carbamate is added in sodium hydrate aqueous solution, is stirred, and mix for the first time molten
Solution, obtains mixed once solution；
B: being added aluminium oxide into mixed once solution, be stirred, and carries out second of mixed dissolution, freezes at -5 DEG C
1h obtains secondary mixed solution；
C: secondary mixed solution is thawed to room temperature, obtains cellulose carbamate fibre spinning solution.
Embodiment 12:
The present embodiment proposes cellulose ammonia in the short silk production process of regenerated celulose fibre on the basis of embodiment 2
The dissolving step of base acid methyl esters includes:
A: cellulose carbamate is added in sodium hydrate aqueous solution, is stirred, and mix for the first time molten
Solution, obtains mixed once solution；
B: being added aluminium oxide into mixed once solution, be stirred, and carries out second of mixed dissolution, freezes at 5 DEG C
2h obtains secondary mixed solution；
C: secondary mixed solution is thawed to room temperature, obtains cellulose carbamate fibre spinning solution.
Embodiment 13:
The present embodiment and the difference of embodiment 11 are: in the step A that the present embodiment is related to, sodium hydrate aqueous solution
Concentration is 6%, and the mass ratio of sodium hydrate solid and cellulose carbamate is 1:1.
Embodiment 14:
The present embodiment and the difference of embodiment 12 are: in the step A that the present embodiment is related to, sodium hydrate aqueous solution
Concentration is 10%, and the mass ratio of sodium hydrate solid and cellulose carbamate is 2:1.
Embodiment 15:
The present embodiment and the difference of embodiment 11 are: in the step A that the present embodiment is related to, first time mixed dissolution
Temperature is -10 DEG C, and the time of first time mixed dissolution is 1h.
Embodiment 16:
The present embodiment and the difference of embodiment 12 are: in the step A that the present embodiment is related to, first time mixed dissolution
Temperature is 0 DEG C, and the time of first time mixed dissolution is 2h.
Embodiment 17:
The present embodiment and the difference of embodiment 11 are: in the step B that the present embodiment is related to, aluminium oxide and cellulose ammonia
The mass ratio of base acid formic acid esters is 1:4.
Embodiment 18:
The present embodiment and the difference of embodiment 12 are: in the step B that the present embodiment is related to, aluminium oxide and cellulose ammonia
The mass ratio of base acid formic acid esters is 1:8.
Embodiment 19:
The short silk of the regenerated celulose fibre that the present embodiment is related to meets:
Dry breaking strength 2.4cN/dtex, wet breaking strength 1.2cN/dtex,
Dry elongation at break 15.8%, the dry extension at break coefficient of variation 11.7%,
Residual sulfur content is 0, whiteness 75%, oil applying rate 0.22%,
Dye uniformity is 3.5 grades, regain 16%,
Limit oxygen index is 19.2%.
The preparation process of the above-mentioned short silk of regenerated celulose fibre is as follows:
A: cellulose carbamate being added in the sodium hydrate aqueous solution that concentration is 8%, be stirred, and carries out the
Mixed once dissolution, solution temperature are -5 DEG C, after dissolving 1h, obtain mixed once solution, wherein sodium hydrate solid and fiber
The mass ratio of plain carbamate is 1.5:1；
B: being added aluminium oxide into mixed once solution, be stirred, and carries out second of mixed dissolution, cold at 2.5 DEG C
Freeze 2h, obtain secondary mixed solution, wherein the mass ratio of aluminium oxide and cellulose amino acid formic acid esters is 1:5；
C: secondary mixed solution is thawed to room temperature, obtains cellulose carbamate fibre spinning solution；
D: the short silk of regenerated celulose fibre is made in cellulose carbamate fibre spinning solution spinning.
Embodiment 20:
The short silk of the regenerated celulose fibre that the present embodiment is related to meets:
Dry breaking strength 2.1cN/dtex, wet breaking strength 1.23cN/dtex,
Dry elongation at break 16%, the dry extension at break coefficient of variation 10.8%,
Residual sulfur content is 0, whiteness 72%, oil applying rate 0.2%,
Dye uniformity is 4 grades, regain 14%,
Limit oxygen index is 19%.
The preparation process of the above-mentioned short silk of regenerated celulose fibre is as follows:
A: cellulose carbamate being added in the sodium hydrate aqueous solution that concentration is 9%, be stirred, and carries out the
Mixed once dissolution, solution temperature are -6 DEG C, after dissolving 1.5h, obtain mixed once solution, wherein sodium hydrate solid and fibre
The mass ratio for tieing up plain carbamate is 1.8:1；
B: being added aluminium oxide into mixed once solution, be stirred, and carries out second of mixed dissolution, freezes at 0 DEG C
2h obtains secondary mixed solution, wherein the mass ratio of aluminium oxide and cellulose amino acid formic acid esters is 1:6；
C: secondary mixed solution is thawed to room temperature, obtains cellulose carbamate fibre spinning solution；
D: the short silk of regenerated celulose fibre is made in cellulose carbamate fibre spinning solution spinning.
Embodiment 21:
The short silk of the regenerated celulose fibre that the present embodiment is related to meets:
Dry breaking strength 2.2cN/dtex, wet breaking strength 1.25cN/dtex,
Dry elongation at break 17.4%, the dry extension at break coefficient of variation 11%,
Residual sulfur content is 0, whiteness 73%, oil applying rate 0.17%,
Dye uniformity is 4 grades, regain 15%,
Limit oxygen index is 19.1%.
The preparation process of the above-mentioned short silk of regenerated celulose fibre is as follows:
A: cellulose carbamate being added in the sodium hydrate aqueous solution that concentration is 10%, be stirred, and carries out the
Mixed once dissolution, solution temperature are -8 DEG C, after dissolving 1.2h, obtain mixed once solution, wherein sodium hydrate solid and fibre
The mass ratio for tieing up plain carbamate is 1:1；
B: being added aluminium oxide into mixed once solution, be stirred, and carries out second of mixed dissolution, cold at -2.5 DEG C
Freeze 1h, obtain secondary mixed solution, wherein the mass ratio of aluminium oxide and cellulose amino acid formic acid esters is 1:7；
C: secondary mixed solution is thawed to room temperature, obtains cellulose carbamate fibre spinning solution；
D: the short silk of regenerated celulose fibre is made in cellulose carbamate fibre spinning solution spinning.
Embodiment 22:
The short silk of the regenerated celulose fibre that the present embodiment is related to meets:
Dry breaking strength 2.25cN/dtex, wet breaking strength 1.18cN/dtex,
Dry elongation at break 16.6%, the dry extension at break coefficient of variation 10.2%,
Residual sulfur content is 0, whiteness 74%, oil applying rate 0.16%,
Dye uniformity is 4.5 grades, regain 14.7%,
Limit oxygen index is 19%.
The preparation process of the above-mentioned short silk of regenerated celulose fibre is as follows:
A: cellulose carbamate being added in the sodium hydrate aqueous solution that concentration is 8%, be stirred, and carries out the
Mixed once dissolution, solution temperature are -5 DEG C, after dissolving 1h, obtain mixed once solution, wherein sodium hydrate solid and fiber
The mass ratio of plain carbamate is 2:1；
B: being added aluminium oxide into mixed once solution, be stirred, and carries out second of mixed dissolution, freezes at -4 DEG C
2h obtains secondary mixed solution, wherein the mass ratio of aluminium oxide and cellulose amino acid formic acid esters is 1:5；
C: secondary mixed solution is thawed to room temperature, obtains cellulose carbamate fibre spinning solution；
D: the short silk of regenerated celulose fibre is made in cellulose carbamate fibre spinning solution spinning.
The index parameter of the short silk of regenerated celulose fibre in above-described embodiment 1~22 is counted, such as table 1,2 institute of table
Show.
Table 1
Table 2
The average value of each index parameter of Example 1~22 respectively with the regenerated fiber in patent document CN102691125A
The index parameter of cellulose fiber is compared, as shown in table 3.
Table 3
Compared by above-mentioned data it is found that the short silk of regenerated celulose fibre of the present invention belongs to high-tenacity low-elongation viscose glue fibre
Dimension, application field include the people's livelihood industry such as garment material, household goods.From the data target of documents CN102691125A
From the point of view of, regenerated celulose fibre disclosed in documents belongs to low strong flatness type regenerated celulose fibre (in most of embodiment
For the intensity in face lower than 1.7), application field includes socks, clothes dress material etc., has the shortcomings that intensity is lower, elasticity is poor,
In addition, being also difficult to use in industrialized production, market popularization value at present since the performance of the product and differing for viscose rayon are larger
It is low.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to technical spirit any simple modification to the above embodiments of the invention, equivalent variations, protection of the invention is each fallen within
Within the scope of.
Claims (5)
1. a kind of short silk of regenerated celulose fibre, it is characterised in that: former by the spinning obtained after the dissolution of cellulose amino acid methyl ester
Liquid spinning and be made, meet following index:
Dry 2.1~2.4cN/dtex of breaking strength, 1.0~1.3cN/dtex of wet breaking strength,
Dry elongation at break 12~18%, the dry extension at break coefficient of variation 8~12%,
Residual sulfur content is 0,
The dissolving step of the cellulose amino acid methyl ester includes:
A: cellulose carbamate being added in the sodium hydrate aqueous solution that concentration is 6~10%, sodium hydrate solid and fibre
The mass ratio for tieing up plain carbamate is (1~2): 1, it is stirred, carries out first time mixed dissolution, and dissolution time is 1~2h,
Obtain the mixed once solution that temperature is -10~0 DEG C；
B: being added aluminium oxide into mixed once solution, and the mass ratio of aluminium oxide and cellulose amino acid formic acid esters is 1~2%, stirs
Mixing is mixed, second of mixed dissolution is carried out, 1~2h is freezed at -5~5 DEG C, obtains secondary mixed solution；
C: secondary mixed solution is thawed to room temperature, obtains cellulose carbamate fibre spinning solution.
2. the short silk of a kind of regenerated celulose fibre according to claim 1, it is characterised in that: the regenerated celulose fibre
The whiteness of short silk is 70~75%, and oil applying rate is 0.15~0.3%.
3. the short silk of a kind of regenerated celulose fibre according to claim 1, it is characterised in that: the regenerated celulose fibre
The dye uniformity of short silk is greater than 3.5 grades.
4. the short silk of a kind of regenerated celulose fibre according to claim 1, it is characterised in that: the regenerated celulose fibre
The regain of short silk is 13~17%.
5. the short silk of a kind of regenerated celulose fibre according to claim 1, it is characterised in that: the regenerated celulose fibre
The limit oxygen index of short silk is 19~20%.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104957A (en) * | 2007-08-20 | 2008-01-16 | 中国科学院新疆理化技术研究所 | Process for preparing cellulose carbamate fibre |
| CN102691125A (en) * | 2012-06-19 | 2012-09-26 | 武汉大学 | Method for preparing regenerated cellulose fibers with cellulose carbamate |
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2015
- 2015-09-17 CN CN201510598448.2A patent/CN106702514B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104957A (en) * | 2007-08-20 | 2008-01-16 | 中国科学院新疆理化技术研究所 | Process for preparing cellulose carbamate fibre |
| CN102691125A (en) * | 2012-06-19 | 2012-09-26 | 武汉大学 | Method for preparing regenerated cellulose fibers with cellulose carbamate |
Non-Patent Citations (1)
| Title |
|---|
| 尿素嵌入法生产纤维素氨基甲酸酯新工艺";哈丽丹•买买提等;《纤维素科学与技术》;20060630;第14卷(第2期);第35-40页 * |
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