CN105040139A - Anti-ultraviolet acrylic fiber and preparation method thereof - Google Patents
Anti-ultraviolet acrylic fiber and preparation method thereof Download PDFInfo
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- CN105040139A CN105040139A CN201510458503.8A CN201510458503A CN105040139A CN 105040139 A CN105040139 A CN 105040139A CN 201510458503 A CN201510458503 A CN 201510458503A CN 105040139 A CN105040139 A CN 105040139A
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Abstract
The invention relates to an anti-ultraviolet acrylic fiber and a preparation method thereof. Graphene oxide GO, polyacrylonitrile PAN and a solvent are mixed to obtain a spinning solution, and the spinning solution is subjected to spinning and drying treatment after being defoamed to obtain the anti-ultraviolet acrylic fiber. The acrylic fiber prepared by the method is excellent in mechanical property, has favorable anti-ultraviolet performance and can be applied to anti-ultraviolet fabrics.
Description
Technical field
The invention belongs to anti-ultraviolet material and preparation field thereof, particularly a kind of uvioresistant acrylic fiber and preparation method thereof.
Background technology
As everyone knows, sunshine is a kind of electromagnetic wave, is made up of ultraviolet, visible ray and infrared ray.The ultraviolet that atmosphere is radiated ground can be penetrated in sunshine and account for 6% of gross energy, ultraviolet can be divided into three sections by its wave-length coverage, that is: UV-A (λ=400 ~ 315nm), UV-B (λ=315 ~ 280nm), UV-C (λ=280 ~ 100nm).Wherein, UV-C in the process of radiation almost absorb by atmosphere.The benefit of ultraviolet to the mankind is energy sterilization, promotes the synthesis of vitamin D in human body.But since early years in last century, because countries in the world use the fluorine such as freon to grab alkanes material in a large number, made Ozone in Atmosphere layer be destroyed, the ultraviolet of the ultraviolet causing being radiated in sunlight ground especially short wavelength strengthens.The increase of amount of ultraviolet irradiation and short wavelengthization, produce significant impact to the environment that the mankind depend on for existence, excessive Ultraviolet radiation can bring out skin disease (even cutaneum carcinoma), cataract, reduction immunologic function etc., is directly detrimental to health.For the people of outdoor activities, clothes are the main barrier preventing ultraviolet excess radiation, but the ability only leaning on fabrics in general shielding ultraviolet rays is inadequate.Since earlier 1990s, expanded research abroad to the function of textiles shielding ultraviolet rays, many antiultraviolet fibers and fabric are developed listing in succession; In recent years, domestic also have the developmental research of some these fibrids and fabric to report.Along with growth in the living standard, the health perception of people strengthens, and ultraviolet resistant textiles will receive an acclaim.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of uvioresistant acrylic fiber and preparation method thereof, and the method is simple to operate, and parameter is easy to control, the solvent safety low toxicity of use.The fibrous mechanical property of preparation is excellent, and uvioresistant performance is good, can be applicable in fabric.
A kind of uvioresistant acrylic fiber of the present invention, it is characterized in that: described uvioresistant nylon fibre is obtained by spinning solution wet spinning, wherein spinning solution component is: graphene oxide GO, polyacrylonitrile (PAN), solvent, wherein the mass ratio of graphene oxide and polyacrylonitrile is 0.02 ~ 0.4:1, and in spinning solution, the concentration of polyacrylonitrile (PAN) is 20% ~ 22%.
Described polyacrylonitrile (PAN) is after drying and dewatering, the polyacrylonitrile after screening; Wherein drying and dewatering is segmentation oven dry or constant temperature drying.Described segmentation is dried: 60 DEG C keep 1h, are warming up to 70 DEG C, keep 1h, are warming up to 90 DEG C, keep 1h, are warming up to 120 DEG C, keep 1h; Constant temperature drying method is: 100 DEG C keep 6h; Screening is 400 order mesh screen screenings.
Described solvent is DMA DMAc, dimethyl sulfoxide (DMSO) DMSO, DMF DMF, sodium sulfocyanate NaSCN, acetone, ethylene carbonate EC, nitric acid HNO
3, zinc chloride ZnCl
2in one or more.
The preparation method of a kind of uvioresistant acrylic fiber of the present invention, comprising:
By graphene oxide GO, polyacrylonitrile (PAN), solvent, obtain spinning solution, carry out spinning, dry process after deaeration, obtain uvioresistant acrylic fiber.
Described mixing is specially: first polyacrylonitrile (PAN) is added expanded rear heating for dissolving in solvent, then adds graphene oxide formation spinning solution; Or first in solvent, add graphene oxide, add the expanded rear heating for dissolving of polyacrylonitrile (PAN) after forming dispersion again and form spinning solution; Or add PAN powder and graphene oxide simultaneously and carry out dissolving and form spinning solution; Or PAN and GO is dissolved in solvent respectively, two kinds of solution are being mixed to form spinning solution.
The dissolving of graphene oxide in dicyandiamide solution, adopts and is first dissolved in the water by graphene oxide GO, then the aqueous solution is carried out frozen dried removing moisture content, then is scattered in dicyandiamide solution by GO; Or adopt and directly GO be scattered in dicyandiamide solution and carry out the ultrasonic process of 30-60min.
The expanded rear heating for dissolving of polyacrylonitrile (PAN) is: the dispersion of PAN is under the speed of agitator of 400-600 rev/min, expanded while stirring, process 2-8h, and then 60-70 DEG C dissolves more than 6-12.
The concrete technology parameter of spinning is: see table 1; Drying is 80 ~ 90 DEG C, and the processing time is 5-8min.
Table 1:
The performance test of fiber, the uvioresistant performance of detection fibers is that the fabric adopting semi-automatic loom fiber to be made into 4.0x4.0cm size is tested.
The preparation process of uvioresistant acrylic fiber of the present invention:
(1) PAN powder is dried, and screen cloth (400 order) screening is separated.
In advance PAN powder is screened, carry out filtration again after this method ratio is prepared into spinning solution and there is better effect.PAN powder feature is in table 2.
The characteristic index of table 2 polyacrylonitrile powder
| Mean molecule quantity | Range of molecular weight distributions | Vitrification point/DEG C | Density/gcm -3 | Softening Sum decomposition temperature/DEG C |
| 68000 | 60000～80000 | ≈90 | 1.12 | 220～300 |
(2) selection of spin solvent.
The solvent that can be used for PAN wet spinning has: N, N-dimethylacetylamide (DMAc), dimethyl sulfoxide (DMSO) (DMSO), DMF (DMF), sodium sulfocyanate (NaSCN), acetone, ethylene carbonate (EC), nitric acid (HNO
3) and zinc chloride (ZnCl
2) etc.Select suitable solvent according to specific needs.
(3) determination of PAN and graphene oxide content.
1. PAN mass concentration is 20% ~ 22%;
2. graphene oxide content (to PAN dry weight) is 0.02% ~ 0.4%.
(4) hybrid mode of graphene oxide, PAN powder and solvent.
Hybrid mode has four kinds, and one is first add in solvent by PAN powder, and after expanding, heating for dissolving adds graphene oxide formation spinning solution again; Two is first in solvent, add graphene oxide, adds PAN powder heating for dissolving again and form spinning solution after forming dispersion; Three is add PAN powder and graphene oxide to carry out dissolving and form spinning solution simultaneously; Four is that PAN and GO is dissolved in solvent respectively, and two kinds of solution are being mixed to form spinning solution; The preferred sequence of four kinds of modes is: (two) > (four) > (three) > ().
(5) fully expanded in dicyandiamide solution of PAN powder.
By the dispersion of PAN powder under the speed of agitator of 400 ~ 600 revs/min, expanded while stirring, process more than 2h.
(6) the abundant dissolving of PAN powder in dicyandiamide solution.
Contain the rotary viscosity character of GO spinning solution under using rotary viscosimeter test different temperatures, adding the viscosity influence of spinning solution of GO is little, and the viscosity of temperature to spinning solution has considerable influence, lists in table 3.During high temperature, spinning solution demonstrates low viscosity, is beneficial to the flowing of spinning solution, and during low temperature, spinning solution demonstrates low viscosity, is beneficial to spinning moulding.
The viscosity (GO4%, PAN20%) of spinning solution under table 3 different temperatures
| Temperature/DEG C | 20±1 | 30±1 | 40±1 | 50±1 | 60±1 | 70±1 |
| Viscosity/Pa.s | 84±1 | 67±1 | 56±1 | 47±1 | 33±1 | 25±1 |
(7) filter and deaeration process.
If spinning solution is even, transparent, can not filter.If containing impurity in spinning solution, according to circumstances filter with 100 ~ 200 order stainless steel meshs.
Spinning solution is transferred in the process of reactor and may has bubble generation.Therefore, after spinning solution is added reactor, need hold over night or vacuum defoamation 2h.
(8) spinning.
The spinneret orifice specification used is diameter 0.1mm × 30 circular hole, adopts three road coagulating baths to carry out spinning.With technological parameter condition listed by table 4 preferably.
The Parameter Conditions of table 4 wet spinning process process
(9) fiber drying densification and HEAT SETTING process.
By obtaining the more excellent PAN/GO fibre bundle of character to spinning fibre compacting by drying and HEAT SETTING process.Temperature 80 ~ 90 DEG C, the processing time is 5 ~ 8min.
(10) fibre property test.Mechanical property, uvioresistant performance are all test according to national standard or industry standard.
A kind of antiultraviolet fiber of the present invention and preparation method thereof, use PAN as raw material, based on wet spinning technology, the operation of wet spinning is: the screening of raw material is dry, prepare spinning solution, spinning solution squeezes out spinning head and forms thread, and spinning solution thread solidifies formation as-spun fibre, as-spun fibre stretching and winding, fiber post processing.
beneficial effect
Gained uvioresistant acrylic fiber of the present invention has:
(1) homogeneity: fiber filament diameter is homogeneous, any surface finish;
(2) mechanical property: the diameter of the average monfil of tow is 65 ± 5 μm, TENSILE STRENGTH is 2.0 ± 0.5cN/dtex, along with the increase of GO amount, the brute force of fiber has rising, when PAN concentration 20%, when GO incorporation is wt%=0.02%, the average tensile fracture strength of 30 monfil is about 2.3cN/dtex, can meet the demand of weaving;
(3) uvioresistant performance: adopt UV-1000F type ultraviolet permeability analyzer type to carry out UV-permeable test to fabric, test result display uvioresistant performance is excellent, and UPF value is all at more than 50+.
Accompanying drawing explanation
The PAN/GO fiber SEM photo that Fig. 1 obtains for example 1;
The PAN/GO woven fabrics that Fig. 2 obtains for embodiment 1;
Fig. 3 is pure PAN fabric (F
0), the fabric (F of embodiment 1
1) and the fabric (F of embodiment 4
2) different-waveband under UV-permeable rate curve.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
Spinning process is:
(1) PAN powder drying and dewatering, screen cloth screening is separated.
A certain amount of PAN powder is placed in baking oven, adopts sectional heating method to dry, 60 DEG C keep 1h, are warming up to 70 DEG C, keep 1h, are warming up to 90 DEG C, keep 1h, are warming up to 120 DEG C, keep 1h.
400 order stainless steel mesh screen sieves are used by PAN powder after oven dry to remove bulky grain.PAN fine powder after sieve is placed in 70 DEG C of constant temperature ovens for subsequent use.
(2) selection of solvent.
Consider for volatilization rapidity, security, the easily property spun and GO dissolubility etc. are many-sided, choice for use DMA (DMAc) is as spin solvent.
(3) determination of PAN and GO content.
1. the spinning solution 300g that PAN mass concentration is 20% is prepared;
2. GO content is (to PAN mass ratio) wt%=0.4%.
(4) hybrid mode of GO, PAN and solvent.
Adopt the second hybrid mode.First precision takes 0.24gGO in beaker, adds 240gDMAc, after jiggling, and ultrasonic process 15min, to dissolving fully, then accurate weighing PAN powder 60g, join in GO dispersion.
(5) fully expanded in dicyandiamide solution of PAN powder.
By the dispersion of PAN powder under the speed of agitator of 200 revs/min, expanded while stirring, process 4h.
(6) the abundant dissolving of PAN powder in dicyandiamide solution.
Until the dispersion of PAN powder is expanded be uniformly dispersed after, adopt thermostatical oil bath to dissolve 6h in 70 DEG C, speed of agitator is 400 revs/min, obtains the uniform spinning solution system of PAN clear.
(7) vacuum defoamation.
Spinning solution clear, without the need to filtering, vacuum defoamation 4h.
(8) spinning.
Adopt three road coagulating baths to carry out wet spinning, design parameter is see table 4.
(9) fiber drying densification and HEAT SETTING process.
At 90 DEG C of temperature, 5min is processed to spinning fibre, obtains GO/PAN fiber.
(10) spinning fibre performance test.
Prepare the advantage of fiber: fibre diameter is homogeneous, surface is comparatively bright and clean.30 monofilament average tensile fracture strengths are about 2.5cN/dtex.Ultraviolet permeability test shows, fabric (F
1) UPF value be 108.73, belong to the excellent rank of uvioresistant performance.
Embodiment 2
Spinning process is:
(1) PAN powder drying and dewatering, screen cloth screening is separated.
Constant temperature drying method is 100 DEG C of oven dry 6h in drying box, re-use 400 order stainless steel mesh screens sieves and remove bulky grain.PAN fine powder after sieve is placed in 70 DEG C of vacuum constant temperature baking ovens for subsequent use.
(2) selection of solvent.
Consider for volatilization rapidity, security, the easily property spun and GO dissolubility etc. are many-sided, choice for use DMA (DMAc) is as spin solvent.
(3) determination of PAN and GO content.
1. the spinning solution 300g that PAN mass concentration is 20% is prepared;
2. GO content is (to PAN mass ratio) wt%=0.4%.
(4) hybrid mode of GO, PAN and solvent.
Adopt the second hybrid mode.First precision takes 0.24gGO in beaker, adds 240gDMAc, after jiggling, and ultrasonic process 15min, to dissolving fully, then accurate weighing PAN powder 60g, join in GO dispersion.
(5) fully expanded in dicyandiamide solution of PAN powder.
By the dispersion of PAN powder under the speed of agitator of 200 revs/min, expanded while stirring, process 4h.
(6) the abundant dissolving of PAN powder in dicyandiamide solution.
Until the dispersion of PAN powder is expanded be uniformly dispersed after, adopt thermostatical oil bath to dissolve 6h in 70 DEG C, speed of agitator is 400 revs/min, obtains the uniform spinning solution system of PAN clear.
(7) vacuum defoamation.
Spinning solution clear, without the need to filtering, vacuum defoamation 4h.
(8) spinning.
Adopt three road coagulating baths to carry out wet spinning, design parameter is see table 4.
(9) fiber drying densification and HEAT SETTING process.
At 90 DEG C of temperature, 5min is processed to spinning fibre, obtains GO/PAN fiber.
(10) spinning fibre performance test.
Prepare the advantage of fiber: fibre diameter is homogeneous, surface is comparatively bright and clean.30 monofilament average tensile fracture strengths are about 2.2cN/dtex.
Embodiment 3
Spinning process is:
(1) PAN powder drying and dewatering, screen cloth screening is separated.
A certain amount of PAN powder is placed in baking oven, adopts sectional heating method to dry, 60 DEG C keep 1h, are warming up to 70 DEG C, keep 1h, are warming up to 90 DEG C, keep 1h, are warming up to 120 DEG C, keep 1h.
400 order stainless steel mesh screen sieves are used by PAN powder after oven dry to remove bulky grain.PAN fine powder after sieve is placed in 70 DEG C of constant temperature ovens for subsequent use.
(2) selection of solvent.
Choice for use DMF (DMF) is as spin solvent.
(3) determination of PAN and GO content.
1. the spinning solution 300g that PAN mass concentration is 20% is prepared;
2. GO content is (to PAN mass ratio) wt%=0.4%.
(4) hybrid mode of GO, PAN and solvent.
Adopt the second hybrid mode.First precision takes 0.24gGO in beaker, adds 240gDMF, after jiggling, and ultrasonic process 15min, to dissolving fully, then accurate weighing PAN powder 60g, join in GO dispersion.
(5) fully expanded in dicyandiamide solution of PAN powder.
By the dispersion of PAN powder under the speed of agitator of 200 revs/min, expanded while stirring, process 4h.
(6) the abundant dissolving of PAN powder in dicyandiamide solution.
Until the dispersion of PAN powder is expanded be uniformly dispersed after, adopt thermostatical oil bath to dissolve 6h in 70 DEG C, speed of agitator is 400 revs/min, obtains the uniform spinning solution system of PAN clear.
(7) vacuum defoamation.
Spinning solution clear, without the need to filtering, vacuum defoamation 4h.
(8) spinning.
Adopt three road coagulating baths to carry out wet spinning, design parameter is see table 4.
(9) fiber drying densification and HEAT SETTING process.
At 90 DEG C of temperature, 5min is processed to spinning fibre, obtains GO/PAN fiber.
(10) spinning fibre performance test.
Prepare the advantage of fiber: fibre diameter is homogeneous, surface is comparatively bright and clean.30 monofilament average tensile fracture strengths are about 2.1cN/dtex.
Embodiment 4
Spinning process is:
(1) PAN powder drying and dewatering, screen cloth screening is separated.
A certain amount of PAN powder is placed in baking oven, adopts sectional heating method to dry, 60 DEG C keep 1h, are warming up to 70 DEG C, keep 1h, are warming up to 90 DEG C, keep 1h, are warming up to 120 DEG C, keep 1h.
400 order stainless steel mesh screen sieves are used by PAN powder after oven dry to remove bulky grain.PAN fine powder after sieve is placed in 70 DEG C of constant temperature ovens for subsequent use.
(2) selection of solvent.
Consider for volatilization rapidity, security, the easily property spun and GO dissolubility etc. are many-sided, choice for use DMA (DMAc) is as spin solvent.
(3) determination of PAN and GO content.
1. the spinning solution 300g that PAN mass concentration is 20% is prepared;
2. GO content is (to PAN mass ratio) wt%=0.02%.
(4) hybrid mode of GO, PAN and solvent.
Adopt the second hybrid mode.First precision takes 12mgGO in beaker, adds 240gDMAc, after jiggling, and ultrasonic process 15min, to dissolving fully, then accurate weighing PAN powder 60g, join in GO dispersion.
(5) fully expanded in dicyandiamide solution of PAN powder.
By the dispersion of PAN powder under the speed of agitator of 200 revs/min, expanded while stirring, process 4h.
(6) the abundant dissolving of PAN powder in dicyandiamide solution.
Until the dispersion of PAN powder is expanded be uniformly dispersed after, adopt thermostatical oil bath to dissolve 6h in 70 DEG C, speed of agitator is 400 revs/min, obtains the uniform spinning solution system of PAN clear.
(7) vacuum defoamation.
Spinning solution clear, without the need to filtering, vacuum defoamation 4h.
(8) spinning.
Adopt three road coagulating baths to carry out wet spinning, design parameter is see table 4.
(9) fiber drying densification and HEAT SETTING process.
At 90 DEG C of temperature, 5min is processed to spinning fibre, obtains GO/PAN fiber.
(10) spinning fibre performance test.
Prepare the advantage of fiber: fibre diameter is homogeneous, surface is comparatively bright and clean.30 monofilament average tensile fracture strengths are about 2.3cN/dtex.Table 4 can be found out, fabric (F
2) UPF value be 89.53, belong to 50+ rank, uvioresistant performance is excellent.Compare with example 1, UPF value declines to some extent, illustrates that fabric uvioresistant performance strengthens along with the increasing of GO content of mixing.
Embodiment 5
Spinning process is:
(1) PAN powder drying and dewatering, screen cloth screening is separated.
A certain amount of PAN powder is placed in baking oven, adopts sectional heating method to dry, 60 DEG C keep 1h, are warming up to 70 DEG C, keep 1h, are warming up to 90 DEG C, keep 1h, are warming up to 120 DEG C, keep 1h.
400 order stainless steel mesh screen sieves are used by PAN powder after oven dry to remove bulky grain.PAN fine powder after sieve is placed in 70 DEG C of constant temperature ovens for subsequent use.
(2) selection of solvent.
Consider for volatilization rapidity, security, the easily property spun and GO dissolubility etc. are many-sided, choice for use DMA (DMAc) is as spin solvent.
(3) determination of PAN and GO content.
1. the spinning solution 300g that PAN mass concentration is 20% is prepared;
2. GO content is (to PAN mass ratio) wt%=0.4%.
(4) hybrid mode of GO, PAN and solvent.
Adopt the 4th kind of hybrid mode.Precision is taken 0.24gGO and 60gPAN powder to be incorporated in beaker simultaneously and to mix, add 240gDMAc, after jiggling, ultrasonic process 15min.
(5) fully expanded in dicyandiamide solution of PAN powder.
By the dispersion of PAN powder under the speed of agitator of 200 revs/min, expanded while stirring, process 4h.
(6) the abundant dissolving of PAN powder in dicyandiamide solution.
Until the dispersion of PAN powder is expanded be uniformly dispersed after, adopt thermostatical oil bath to dissolve 6h in 70 DEG C, speed of agitator is 400 revs/min, obtains the uniform spinning solution system of PAN clear.
(7) vacuum defoamation.
Spinning solution clear, without the need to filtering, vacuum defoamation 4h.
(8) spinning.
Adopt three road coagulating baths to carry out wet spinning, design parameter is see table 4.
(9) fiber drying densification and HEAT SETTING process.
At 90 DEG C of temperature, 5min is processed to spinning fibre, obtains GO/PAN fiber.
(10) spinning fibre performance test.
Prepare the advantage of fiber: fibre diameter is homogeneous, surface is comparatively bright and clean.30 monofilament average tensile fracture strengths are about 2.4cN/dtex.
Embodiment 6
Spinning process is:
(1) PAN powder drying and dewatering, screen cloth screening is separated.
A certain amount of PAN powder is placed in baking oven, adopts sectional heating method to dry, 60 DEG C keep 1h, are warming up to 70 DEG C, keep 1h, are warming up to 90 DEG C, keep 1h, are warming up to 120 DEG C, keep 1h.
400 order stainless steel mesh screen sieves are used by PAN powder after oven dry to remove bulky grain.PAN fine powder after sieve is placed in 70 DEG C of constant temperature ovens for subsequent use.
(2) selection of solvent.
Consider for volatilization rapidity, security, the easily property spun and GO dissolubility etc. are many-sided, choice for use DMA (DMAc) is as spin solvent.
(3) determination of PAN and GO content.
1. the spinning solution 300g that PAN mass concentration is 20% is prepared;
2. GO content is (to PAN mass ratio) wt%=0.4%.
(4) hybrid mode of GO, PAN and solvent.
Adopt the second hybrid mode.First precision takes 0.24gGO in beaker, adds 240gDMAc, after jiggling, and ultrasonic process 15min, to dissolving fully, then accurate weighing PAN powder 60g, join in GO dispersion.
(5) fully expanded, the dissolving of PAN powder in dicyandiamide solution.
Adopt direct thermostatical oil bath 60 ~ 70 DEG C to heat 6h, speed of agitator is 400 revs/min, realizing the expanded process with dissolving simultaneously, obtaining spinning solution.
(6) vacuum defoamation.
Spinning solution clear, without the need to filtering, vacuum defoamation 4h.
(7) spinning.
Adopt three road coagulating baths to carry out wet spinning, design parameter is see table 4.
(8) fiber drying densification and HEAT SETTING process.
At 90 DEG C of temperature, 5min is processed to spinning fibre, obtains GO/PAN fiber.
(9) spinning fibre performance test.
Prepare the advantage of fiber: fibre diameter is homogeneous, surface is comparatively bright and clean.30 monofilament average tensile fracture strengths are about 2.2cN/dtex.
The UPF factor of the fabric that table 4 obtains for example 1 and example 4
Ultraviolet test result (the F of table 4 fabric
0represent pure PAN fabric)
Claims (10)
1. a uvioresistant acrylic fiber, it is characterized in that: described uvioresistant nylon fibre is obtained by spinning solution wet spinning, wherein spinning solution component is: graphene oxide GO, polyacrylonitrile (PAN), solvent, wherein the mass ratio of graphene oxide and polyacrylonitrile is 0.02 ~ 0.4:1, and in spinning solution, the concentration of polyacrylonitrile (PAN) is 20%-22%.
2. a kind of uvioresistant acrylic fiber according to claim 1, is characterized in that: the molecular weight ranges of described polyacrylonitrile (PAN) is 60000-80000; Polyacrylonitrile (PAN) is the polyacrylonitrile after drying and dewatering screening; Wherein drying and dewatering is segmentation oven dry or constant temperature drying.
3. a kind of uvioresistant acrylic fiber according to claim 2, is characterized in that: described segmentation is dried and is: 60 DEG C keep 1h, are warming up to 70 DEG C, keep 1h, are warming up to 90 DEG C, keep 1h, are warming up to 120 DEG C, keep 1h; Constant temperature drying method is: 100 DEG C keep 6h; Screening is 400 order mesh screen screenings.
4. a kind of uvioresistant acrylic fiber according to claim 1, it is characterized in that: described solvent is N, N-dimethylacetylamide DMAc, dimethyl sulfoxide (DMSO) DMSO, DMF DMF, sodium sulfocyanate NaSCN, acetone, ethylene carbonate EC, nitric acid HNO
3, zinc chloride ZnCl
2in one or more.
5. a preparation method for the uvioresistant acrylic fiber as described in as arbitrary in claim 1-4, comprising: by graphene oxide GO, polyacrylonitrile (PAN), solvent, obtain spinning solution, carries out spinning, dry process, obtain uvioresistant acrylic fiber after deaeration.
6. the preparation method of a kind of uvioresistant acrylic fiber according to claim 5, is characterized in that: described mixing is specially: first polyacrylonitrile (PAN) is added expanded rear heating for dissolving in solvent, then adds graphene oxide formation spinning solution; Or first in solvent, add graphene oxide, add the expanded rear heating for dissolving of polyacrylonitrile (PAN) after forming dispersion again and form spinning solution; Or add simultaneously PAN powder and graphene oxide carry out expanded, dissolve and form spinning solution; Or PAN and GO is dissolved in solvent respectively, then two kinds of solution are mixed to form spinning solution.
7. the preparation method of a kind of uvioresistant acrylic fiber according to claim 6, it is characterized in that: the dissolving of graphene oxide in dicyandiamide solution, adopt and first graphene oxide GO is dissolved in the water, then the aqueous solution is carried out frozen dried removing moisture content, then GO is scattered in dicyandiamide solution; Or adopt and directly GO be scattered in dicyandiamide solution and carry out the ultrasonic process of 30-60min.
8. the preparation method of a kind of uvioresistant acrylic fiber according to claim 6, it is characterized in that: the expanded rear heating for dissolving of polyacrylonitrile (PAN) is: the dispersion of PAN is under the speed of agitator of 400-600 rev/min, expanded while stirring, process 2-8h, then 60-70 DEG C dissolves 6-12h.
9. the preparation method of a kind of uvioresistant acrylic fiber according to claim 5, it is characterized in that: the technological parameter of spinning is: coagulating bath is the mixed solution of solvent and water, temperature is 20-30 DEG C, and roller rotating speed is 2.0-3.0r/min; Elementary drawing-off bath is: pure water, temperature are 50-70 DEG C, and roller rotating speed is: 4.0-6.0r/min; Hot gas spring is bathed: pure water, and temperature is 80-90 DEG C, and roller rotating speed is 10-20r/min; Winding speed is 60-70m/min.
10. the preparation method of a kind of uvioresistant acrylic fiber according to claim 5, is characterized in that: described drying is treated to 80 ~ 90 DEG C, and the processing time is 5-8min.
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| CN109023593A (en) * | 2018-06-05 | 2018-12-18 | 中国石油化工股份有限公司 | The method for improving sodium sulfocyanate legal system polyacrylonitrile carbon fiber performance |
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| CN109689949A (en) * | 2016-08-18 | 2019-04-26 | 土耳其Aksa丙烯酸化学工业股份公司 | With the acrylic fiber/Modacrylic fibers for resisting smelly effect |
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| CN108342786A (en) * | 2018-02-10 | 2018-07-31 | 中科纺织研究院（青岛）有限公司 | A kind of acrylic fiber and preparation method thereof with magnetite health-care physiotherapeutic function |
| CN109023593A (en) * | 2018-06-05 | 2018-12-18 | 中国石油化工股份有限公司 | The method for improving sodium sulfocyanate legal system polyacrylonitrile carbon fiber performance |
| CN116393178A (en) * | 2023-03-14 | 2023-07-07 | 中国水利水电第六工程局有限公司 | Lake and pond treatment method based on graphene photocatalytic net |
| CN116393178B (en) * | 2023-03-14 | 2024-05-14 | 中国水利水电第六工程局有限公司 | Lake and pond treatment method based on graphene photocatalytic net |
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