Cool viscose and preparation method thereof
Technical field
The present invention relates to the viscose technical field, relate in particular to a kind of cool viscose and preparation method thereof.
Background technology
The raising of Along with people's life & amusement level, outdoor exercises have become a kind of fashion, and people are also increasingly high to the requirement of sportswear lining, not only require comfortable and easy to wear, healthy, environmental protection, also require lining to have functional to outdoor environment.When human motion was perspired, common clothes can stick on the skin, and sweat can not in time be discharged, and the ultraviolet rate of blocking is approximately had only 70%, this can not satisfy far away people move out of doors in to the requirement of health.Therefore; In order to satisfy the superior and functionalization demand that people pursue garment material day by day; People are are researching and developing and variously can ensure outdoor exercises and healthy comfortable functional fiber; Can integrate and ice the dried soon and anti-ultraviolet function of refreshing cooling, moisture absorbing and sweat releasing, meet the functional fiber of the health demand of outdoor fashion motion.And viscose obtains people's acceptance and approval for a long time with wearability such as its excellent hygroscopicity, gas permeabilities, and therefore exploitation has the refreshing cooling of ice, moisture absorbing and sweat releasing is done soon and the viscose of anti-ultraviolet function also more and more receives people's attention.
Mica is a kind of ice-cold mineral powder, is stratiform silicate structure, and physico-chemical property is special, and chemical property own is stable: uvioresistant, high temperature resistant, hydrability strong, refraction brightness is high, and has pearly luster.Thin layer mica itself is clear, colorless fully, and its fusing point is spent up to 1300, and can not change fully in the following character of high temperature 550 degree; And the thermal conduction rate of sheet mica is high, adds nano mica surface charging lotus, so aquation is quite high; Be that moisture content is high, need more than 500 degree, just can water be removed, thus; High moisture, also drive cooling effect, so mica has a dual effect " high thermoconductivity+high endothermic effect ".
Although mica has excellent properties such as absorbing and cooling temperature, uvioresistant; Up to now, but having no talent links together mica and viscose, makes a kind of product have the advantage of two kinds of materials simultaneously; Make viscose have the refreshing function of refrigerant ice; Compare with common lining during with contact skin and can reduce temperature, the clothes comfortable feel of processing is nice and cool, even under scorching sun, wear still clearly comfortable.The cool fiber of developing in the market has only synthetic fiber.The inventor through big quantity research, combines viscose after the characteristic of having grasped two kinds of materials finally with mica, developed the mica cool viscose that has both characteristics simultaneously.
Summary of the invention
Technical problem to be solved by this invention provides a kind of cool viscose and preparation method thereof, and this product and the product through the preparation of this method have the refreshing cooling of ice, moisture absorption is ventilative and function such as uvioresistant.
For solving above-mentioned first technical problem, technical scheme of the present invention is:
Cool viscose contains the mica powder of 3~20wt% of fiber butt weight in said viscose.
Said mica powder is scattered in the surperficial and inner of said viscose; The particle diameter of said mica powder is less than 2 μ m; Said mica powder is biotite powder, muscovite powder, phlogopite powder, lepidolite powder or sericite powder.
Doing of said cool viscose is by force 1.7~3.0cN/dtex, and dried stretching is 9~18%.
For solving above-mentioned second technical problem, technical scheme of the present invention is:
The preparation method of cool viscose may further comprise the steps:
(1) mica slurry preparation: in the mica powder, add surfactant and dispersant, add deionized water again, being configured to concentration is the mica slurry of 16%~30wt%;
(2) viscose glue preparation: uses bamboo pulp to be raw material, make viscose glue, wherein in dissolving step, add and dissolve denaturant through comprising dipping, squeezing, pulverizing, experienced, yellow and dissolving step;
(3) secondary of mica slurry preparation: get by 5~10 times of mica slurry weight and to dissolve good viscose glue and mix grinding 60~140min with the mica slurry;
(4) preparation of spinning solution: carry out maturation to dissolving good viscose glue; And the mica slurry of secondary configuration accounted for the ratio of 3~20wt% of fiber butt weight in mica powder wherein; Join in the viscose glue in the maturation and stir, through deaeration continuously, filtration, obtain spinning solution then;
(5) spinning moulding:, and after strand drawing-off and post processing, make cool viscose with spinning solution spinning moulding in the coagulating bath that is added with spinning denaturant and spinning dispersant.
Wherein, when the mica slurry was prepared, the surfactant of said adding was an amine cation type surfactant, and addition is 0.1~0.5wt% of mica powder body weight; The dispersant of said adding is that silicon is cationoid surfactant or sodium phosphate trimer, and addition is 0.2~1.0wt% of mica powder body weight; Said dissolving denaturant is an alkyl polyamine, and addition is 1.2~2.0wt% of chemical cellulose weight in the viscose glue.
Preferably, when the mica slurry was prepared, the surfactant of said adding was two alkyl-dimethyl ammonium chlorides, and the dispersant of said adding is a polysiloxane quaternary ammonium.
The consisting of of coagulating bath during said spinning moulding: sulfuric acid 100~140g/l, sodium sulphate 320~350g/l; Said spinning denaturant is a polyethylene glycol, and content is 0.2~0.6wt% in coagulating bath; Said spinning dispersant is an amine cation type surfactant, and content is 0.1~0.4wt% in coagulating bath.
In said spinning step, the strand drawing-off comprises shower nozzle drawing-off → air bath drawing-off → first coagulating bath drawing-off → second coagulating bath drawing-off; Each drawing-off ratio is: shower nozzle drawing-off-10~1%, air bath drawing-off 20~65%, the first coagulating bath drawing-off 4~13%, the second coagulating bath drawing-off 3~16%.
Preferably, save bleaching process in the said post-processing step.
The mica powder that in said viscose, contains 3~20wt% of fiber butt weight; The particle diameter of said mica powder is less than 2 μ m; Said mica powder is biotite powder, muscovite powder, phlogopite powder, lepidolite powder or sericite powder; Doing of said cool viscose is by force 1.7~3.0cN/dtex, and dried stretching is 9~18%.
Owing to adopted technique scheme, the invention has the beneficial effects as follows:
1, the mica powder that uses of the present invention is the micron order mica; And dispose through secondary; In fiber, be uniformly dispersed, owing to the mica powder adds in fiber production process, so the mica powder is dispersed in the surperficial and inner of fiber; The ice-cold cooling-down effect of the cool viscose of producing does not receive the influence of clothing washing number of times, can forever keep refrigerant, smooth effect.
2, the present invention has all added dispersant in preparation of mica slurry and coagulating bath; Therefore dispersiveness and the compatibility of mica powder in viscose is good; The cool viscose of producing not only has outside the pure natural, degradable, softness, moisture absorption of bamboo fibre, viscose, the ventilative and excellent advantages such as dyeability, also has the high moisture absorption of cool fiber, absorbing and cooling temperature, uvioresistant and far health-care function.
3, the present invention prepares and has adopted viscose glue, coagulating bath complex denaturation technology in the process, and doing of prepared finished fiber is by force 1.7~3.0cN/dtex, driedly stretches 9~18%, and intensity is high, and textile processibility can be good.
4, the used coagulating bath of spinning moulding of the present invention has been cancelled human environment has been polluted big zinc sulfate, has reduced the environmental hazard of fiber production process.
5, aftertreatment technology of the present invention has saved the bleaching process of conventional production process of viscose fiber; Prevented that bleaching process from further damaging bamboo pulp and antibacterial substance wherein; Influence the function and the outward appearance of product, and reduced production cost, improved production efficiency.
The specific embodiment
Following examples only are used to explain the present invention, but do not limit protection scope of the present invention.
Embodiment 1 1.33dtex * 38mm cool viscose
(1) preparation of mica slurry: at particle diameter is in the mica powder of 0.9 μ m; The two alkyl-dimethyl ammonium chlorides of 0.3wt% that add the mica powder body weight; 0.5wt% polysiloxane quaternary ammonium with the mica powder body weight adds deionized water again, and being mixed with concentration is the mica slurry of 25wt%.
(2) viscose glue preparation: use bamboo pulp to be raw material; Through comprising that dipping, squeezing, pulverizing, experienced, yellow and dissolving step make viscose glue, in course of dissolution, add the denaturant alkyl polyamine; Addition is the 1.8wt% of chemical cellulose weight, then viscose glue is carried out maturation.
(3) secondary of mica slurry preparation: extraordinarily go into to have dissolved good viscose glue by 6 of mica slurry weight, place ball mill, ball milling 90min.
(4) preparation of spinning solution: the ratio that the mica slurry of secondary configuration is accounted for the 5wt% of fiber butt weight in mica powder wherein; Join before the deaeration in the viscose glue in the maturation and stir; Through deaeration rapidly, continuously and filtration, obtaining viscosity is 65s (being recorded by falling ball method), degree of ripeness 25ml (10%NH4Cl titration) then; Esterification degree 42 contains the modified rayon spinning solution of mica.
(5) spinning moulding: above-mentioned spinning solution is introduced spinning moulding in the coagulating bath; Coagulation bath composition and content are following: sulfuric acid 120g/l; Sodium sulphate 330g/l, the denaturant polyethylene glycol accounts for the 0.3wt% of acid bath gross weight, and the many alkyl trimethyl ammonium chlorides of dispersant account for the 0.3wt% of acid bath gross weight; The strand draft process is: shower nozzle drawing-off-10%, air bath drawing-off 60%, the first coagulating bath drawing-off 10%, the second coagulating bath drawing-off 15%; Fiber after the moulding makes cool viscose after strand drawing-off and post processing, wherein post-processing step saves bleaching process.
The dried strong 2.60cN/dtex of the cool viscose that makes driedly stretches 17.5%.
Embodiment 2 2.78dtex * 51mm cool viscose
(1) preparation of mica slurry: at particle diameter is in the mica powder of 1.2 μ m; The two alkyl-dimethyl ammonium chlorides of 0.4wt% that add the mica powder body weight; 0.7wt% polysiloxane quaternary ammonium with the mica powder body weight adds deionized water again, and being mixed with concentration is the mica slurry of 26wt%.
(2) viscose glue preparation: use bamboo pulp to be raw material; Through comprising that dipping, squeezing, pulverizing, experienced, yellow and dissolving step make viscose glue, in course of dissolution, add the denaturant alkyl polyamine; Addition is the 1.3wt% of chemical cellulose weight, then viscose glue is carried out maturation.
(3) secondary of mica slurry preparation: extraordinarily go into to have dissolved good viscose glue by 9 of mica slurry weight, place ball mill, ball milling 120min.
(4) preparation of spinning solution: the ratio that the mica slurry of secondary configuration is accounted for the 10wt% of fiber butt weight in mica powder wherein; Join before the deaeration in the viscose glue in the maturation and stir; Through deaeration rapidly, continuously and filtration, obtaining viscosity is 55s (being recorded by falling ball method), degree of ripeness 28ml (10%NH4Cl titration) then; Esterification degree 40 contains the modified rayon spinning solution of mica.
(5) spinning moulding: above-mentioned spinning solution is introduced spinning moulding in the coagulating bath; Coagulation bath composition and content are following: sulfuric acid 130g/l; Sodium sulphate 340g/l, the denaturant polyethylene glycol accounts for the 0.6wt% of acid bath gross weight, and the many alkyl trimethyl ammonium chlorides of dispersant account for the 0.2wt% of acid bath gross weight; The strand draft process is: shower nozzle drawing-off-5%, air bath drawing-off 54%, the first coagulating bath drawing-off 6%, the second coagulating bath drawing-off 10%; Fiber after the moulding makes cool viscose after strand drawing-off and post processing, wherein post-processing step saves bleaching process.
The dried strong 2.32cN/dtex of the cool viscose that makes driedly stretches 17.0%.
Embodiment 3 3.33dtex * 60mm cool viscose
(1) preparation of mica slurry: at particle diameter is in the mica powder of 1.8 μ m; The two alkyl-dimethyl ammonium chlorides of 0.5wt% that add the mica powder body weight; 0.4wt% polysiloxane quaternary ammonium with the mica powder body weight adds deionized water again, and being mixed with concentration is the mica slurry of 24wt%.
(2) viscose glue preparation: use bamboo pulp to be raw material; Through comprising that dipping, squeezing, pulverizing, experienced, yellow and dissolving step make viscose glue, in course of dissolution, add the denaturant alkyl polyamine; Addition is the 1.7wt% of chemical cellulose weight, then viscose glue is carried out maturation.
(3) secondary of mica slurry preparation: extraordinarily go into to have dissolved good viscose glue by 4 of mica slurry weight, place ball mill, ball milling 90min.
(4) preparation of spinning solution: the ratio that the mica slurry of secondary configuration is accounted for the 8wt% of fiber butt weight in mica powder wherein; Join before the deaeration in the viscose glue in the maturation and stir; Through deaeration rapidly, continuously and filtration, obtaining viscosity is 59s (being recorded by falling ball method), degree of ripeness 25ml (10%NH4Cl titration) then; Esterification degree 42 contains the modified rayon spinning solution of mica.
(5) spinning moulding: above-mentioned spinning solution is introduced spinning moulding in the coagulating bath; Coagulation bath composition and content are following: sulfuric acid 140g/l; Sodium sulphate 320g/l, the denaturant polyethylene glycol accounts for the 0.4wt% of acid bath gross weight, and the many alkyl trimethyl ammonium chlorides of dispersant account for the 0.4wt% of acid bath gross weight; The strand draft process is: shower nozzle drawing-off-8%, air bath drawing-off 39%, the first coagulating bath drawing-off 10%, the second coagulating bath drawing-off 14%; Fiber after the moulding makes cool viscose after strand drawing-off and post processing, wherein post-processing step saves bleaching process.
The dried strong 2.28cN/dtex of the cool viscose that makes driedly stretches 17.4%.