CN103590129B - Polypropylene fiber easy to dye and preparation method thereof - Google Patents
Polypropylene fiber easy to dye and preparation method thereof Download PDFInfo
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- CN103590129B CN103590129B CN201310487988.4A CN201310487988A CN103590129B CN 103590129 B CN103590129 B CN 103590129B CN 201310487988 A CN201310487988 A CN 201310487988A CN 103590129 B CN103590129 B CN 103590129B
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Abstract
The invention discloses a polypropylene fiber easy to dye. The fiber comprises the following components by weight percent: 80-95% of polypropylene, 5-10% of sodium allylsulfonate, 5-10% of maleic anhydride, and 0.04-0.05% of a catalyst, wherein the weight percentage of the components is 100% in total. According to the preparation method, sodium allylsulfonate is taken as a dyeing base and is grafted onto a polypropylene macromolecular chain through reacting with maleic anhydride; the sodium allylsulfonate modified by maleic anhydride has allyl functional groups, has good compatibility with a polypropylene molecular chain, and can generate part grafted copolymers, so that the crystallization course of polypropylene fiber is disturbed, the orientation and crystallization of macromolecular chain of the polypropylene fiber are damaged, the anion functional group sulfonic acid group is maintained, the sulfonic acid group and cationic dyes can exchange ions at low temperature, so that cationic dyes enter the surface and interior of the fiber so as to obtain the polypropylene fiber easy to dye.
Description
Technical field
The invention belongs to chemical fibre manufacture and staining technique field, be specifically related to a kind of easy dyeing polypropylene fibre and preparation method thereof.
Background technology
Polypropylene fibre is because easy crystallization, and strand arrangement is regular, and dye molecule is difficult to be attached to fiber surface and inside, and not containing polar group in polypropylene molecular chain, be difficult to combine with dye molecule, thus polypropylene fibre is difficult to dyeing.In order to make dyestuff enter fiber surface and inside, several method is had to attempt.First method is surface treatment, by methods such as plasma method, corona discharge method, infusion processes, makes fiber surface with polar group, and dye molecule combines, thus has dyeability.But surface treating process for modifying is difficult to continuity method production, and modified effect is not fine, is difficult to realize industrialization and produces.Second method is copolymerization, because propylene is gas, very high to catalyst requirement, add second comonomer and can reduce catalytic efficiency, therefore, be difficult to direct block copolymerization, conventional graft copolymerization mode, dye seat (can accept the part of dye functional group) is grafted on polypropylene macromolecular chain, thus makes fiber molecule have dyeability, conventional radiation, oxidation and mode of heating grafting dye seat, but process loaded down with trivial details, and in graft copolymerization process, considerable influence is produced to the mechanical property of polypropylene fibre, and can not practical requirement, be difficult to suitability for industrialized production.The third method is blend method, namely adds in polypropylene fibre and can contaminate component, at fiber surface and inner formation dye acceptor, thus has dyeability.Conventional additive has low molecular compound, macromolecular compound and metal salt compound.No matter adopt which kind of additive, all need to solve additive and the compatibility of polypropylene molecule and the problem of processing flowability, the crystallization behavior of polypropylene fibre in forming process to be upset on the one hand, do not destroy the mechanical property of fiber again simultaneously, take into account these two aspects more difficult, and low molecule additive also to there is viscosity too little, flow too fast deficiency; Metal Salts is except flowing soon, and be only applicable to dark dye, range of application is narrow.
Summary of the invention
The present invention is directed to the above-mentioned deficiency of prior art, provide a kind of and process the mechanical property simply, not destroying fiber, make dye seat be evenly distributed on polypropylene fibre surface and the inner easy dyeing polypropylene fibre that can realize suitability for industrialized production.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of easy dyeing polypropylene fibre, the each weight percentages of components of this fiber is: polypropylene is 80-95%, propenyl sodium sulfonate is 5-10%, maleic anhydride is 5-10%, catalyst is 0.04-0.05%, and above-mentioned each weight percentages of components sum is 100%.
Propenyl sodium sulfonate in the present invention, can be sodium allylsulfonate or methylpropene sodium sulfonate, its fusing point be at 180-230 DEG C.
In the present invention, catalyst can be benzoyl peroxide.
The present invention also provides a kind of preparation method of above-mentioned easy dyeing polypropylene fibre, and preparation process comprises:
(1) according to following ratio weighing: polypropylene is 80-95%; Propenyl sodium sulfonate is 5-10%; Maleic anhydride is 5-10%; Catalyst is 0.04-0.05%, and above-mentioned each weight percentages of components sum is 100%; Load weighted raw material is dropped in high speed agitator, first low speed 5-150 rev/min stirs 5-10 minute, high speed 200-800 rev/min is stirred 15-25 minute again, controls whipping temp (low speed and whipping temp at a high speed) and between 90-120 DEG C, makes various raw material Homogeneous phase mixing;
(2) by step (1) mixed uniformly raw material in mixed at high speed agitator, be dropped in response type double screw extruder, Screw Extrusion temperature is 160-230 degree, after melting mixing, propenyl sodium sulfonate and maleic anhydride are under catalyst action, extrude, tie rod, pelletizing, obtain blended particle;
(3) blended particle is put in spinning screw extruder, setting Screw Extrusion temperature is 190-250 DEG C, it is that the spinnerets of 24-108 is extruded into melt fiber that fused materials enters hole count through spinning pack, then through wind-warm syndrome be 16-35 degree, cold air blast velocity is the cooling air quenching of 0.3-1.5 m/min, then the hot-rolling through 50-90 degree stretches, draw ratio is 1.5-3.0 times, then be coiling and molding on the up-coiler of 1500-3000 m/min at winding speed, obtain easy dyeing polypropylene fibre.
Advantage of the present invention and beneficial effect:
1. the present invention with to propenyl sodium sulfonate for dye seat, reacted by propenyl sodium sulfonate and maleic anhydride, be grafted on polypropylene macromolecular chain, under twin-screw effect, Homogeneous phase mixing, by screw spinning, obtains easy dyeing polypropylene fibre.Through maleic anhydride modified sodium allylsulfonate, all contain propenyl functional group, good compatibility is had with polypropylene molecular chain, and can generating portion graft copolymer, upset polypropylene fibre crystallization process, break orientation and the crystallization of macromolecular chain in ring polypropylene fibre, remain this anionic functional group of sulfonic acid group simultaneously, ion-exchange can be carried out under cryogenic with cation dyes, thus make cation dyes enter fiber surface and inside, obtain cation stain polypropylene fibre and easy dyeing polypropylene fibre.
2. instant invention overcomes the additive of prior art or be to contaminate copolyester, or be the defect that temperature that the bad and dyeing polypropylene fibers with polypropene blended processing flowability that slaine causes needs is high; The present invention adopts the polar molecule having certain degree of polymerization, and its fusing point, in fiber process temperature range, has higher dye seat percentage composition, and has good compatibility with polypropylene molecule, can be processed into fiber smoothly.
Detailed description of the invention
Below by embodiment, the present invention is described in further detail, but the present invention is not only confined to following examples.
Embodiment 1:
Weighing polypropylene is 90.95 parts, sodium allylsulfonate is 6 parts, maleic anhydride is 3 parts; Benzoyl peroxide 0.05 part.Load weighted raw material is dropped in high speed agitator, and first low speed 50 revs/min stirs 10 minutes, then high speed 500 revs/min stirs 20 minutes, controls whipping temp at 95 DEG C, makes various raw material Homogeneous phase mixing.The raw material good by Homogeneous phase mixing, be dropped in response type double screw extruder, Screw Extrusion temperature is 210 DEG C, after melting mixing, extrude, cool, tie rod, pelletizing, obtain blended particle.
Blended particle is put in vacuum drier, setting baking temperature is 110 DEG C, after dry 3 hours, taking-up is put in spinning screw extruder, setting Screw Extrusion temperature is 220 DEG C, pass through melt-out spinning, entering spinnerets hole count through spinning pack is that the spinnerets in 24 holes is extruded into melt fiber, then through wind-warm syndrome be 20 degree, after cold air blast velocity is the cooling air quenching of 1.0 ms/min, stretch through the hot-rollings of 60 degree, draw ratio is 2.0 times, is then coiling and molding on the up-coiler of 2800 ms/min at winding speed, obtains easy dyeing polypropylene POY fiber.
Embodiment 2:
Weighing polypropylene is 89.95 parts, methylpropene sodium sulfonate is 8 parts, maleic anhydride is 2 parts; Benzoyl peroxide 0.05 part.Load weighted raw material is dropped in high speed agitator, and first low speed 100 revs/min stirs 10 minutes, then high speed 600 revs/min stirs 20 minutes, controls whipping temp at 105 DEG C, makes various raw material Homogeneous phase mixing.The raw material good by Homogeneous phase mixing, is dropped in double screw extruder, and Screw Extrusion temperature is 210 DEG C, after melting mixing, propenyl sodium sulfonate and maleic anhydride under catalyst action, extrude, tie rod, pelletizing, obtain blended particle.Blended particle is put in vacuum drier, setting baking temperature is 110 DEG C, after dry 2 hours, taking-up is put in response type spinning screw extruder, setting Screw Extrusion temperature is 220 DEG C, spinning body temperature is 240 DEG C, pass through melt-out spinning, entering spinnerets hole count through spinning pack is that the spinnerets in 96 holes is extruded into melt fiber, then through wind-warm syndrome be 25 degree, cold air blast velocity is after the cooling air quenching of 1.2 ms/min, stretch through the hot-rollings of 80 degree, draw ratio is 2.8 times, then be coiling and molding on the up-coiler of 2500 ms/min at winding speed, easy dyeing polypropylene DT fiber is obtained after drawing-off.
Embodiment 3:
Weighing polypropylene is 91 parts, sodium allylsulfonate is 5.95 parts, maleic anhydride is 3 parts; Ammonium persulfate 0.05 part.Load weighted raw material is dropped in high speed agitator, and first low speed 150 revs/min stirs 10 minutes, then high speed 800 revs/min stirs 20 minutes, controls whipping temp 90 DEG C, makes various raw material Homogeneous phase mixing.The raw material good by Homogeneous phase mixing, is dropped in response type double screw extruder, and setting Screw Extrusion temperature is 200 DEG C, after melting mixing, propenyl sodium sulfonate and maleic anhydride under catalyst action, extrude, tie rod, pelletizing, obtain blended particle.Blended particle is put in vacuum drier, setting baking temperature is 90 DEG C, after dry 3 hours, taking-up is put in spinning screw extruder, setting Screw Extrusion temperature is 210 DEG C, spinning body temperature is 230 DEG C, pass through melt-out spinning, entering spinnerets hole count through spinning pack is that the spinnerets in 108 holes is extruded into melt fiber, then through wind-warm syndrome be 30 degree, cold air blast velocity is after the cooling air quenching of 1.5 ms/min, stretch through the hot-rollings of 90 degree, draw ratio is 2.5 times, then be coiling and molding on the up-coiler of 3000 ms/min at winding speed, easy dyeing polypropylene DTY fiber is obtained after drafting false twisting.
Adopt cation dyes to carry out cation stain in the sample of above-described embodiment, its rate of dyeing (tinctorial yield, dye uptake) carries out detecting (assay method with reference to GB/T16602-1996 dye uptake), and its rate of dyeing reaches 85-97%; Therefore, it is high that polypropylene fibre of the present invention has rate of dyeing, and dye firmly advantage.
Claims (4)
1. an easy dyeing polypropylene fibre, it is characterized in that: each weight percentages of components of this fiber is: polypropylene is 80-95%, propenyl sodium sulfonate is 5-10%, and maleic anhydride is 5-10%, catalyst is 0.04-0.05%, and above-mentioned each weight percentages of components sum is 100%.
2. easy dyeing polypropylene fibre according to claim 1, is characterized in that: described propenyl sodium sulfonate, for fusing point is at the sodium allylsulfonate of 180-230 DEG C or methylpropene sodium sulfonate.
3. easy dyeing polypropylene fibre according to claim 1, is characterized in that: described catalyst is benzoyl peroxide.
4. a preparation method for easy dyeing polypropylene fibre, is characterized in that: preparation process comprises:
(1) according to following ratio weighing: polypropylene is 80-95%; Propenyl sodium sulfonate is 5-10%; Maleic anhydride is 5-10%; Catalyst is 0.04-0.05%, and above-mentioned each weight percentages of components sum is 100%; Load weighted raw material is dropped in agitator, and first 5-150 rev/min is stirred 5-10 minute, then 200-800 rev/min is stirred 15-25 minute, controls whipping temp between 90-120 DEG C, makes various raw material Homogeneous phase mixing;
(2) by step (1) mixed uniformly raw material in mixed at high speed agitator, be dropped in response type double screw extruder, Screw Extrusion temperature is 160-230 degree, after melting mixing, propenyl sodium sulfonate and maleic anhydride are under catalyst action, extrude, tie rod, pelletizing, obtain blended particle;
(3) blended particle is put in spinning screw extruder, setting Screw Extrusion temperature is 190-250 DEG C, it is that the spinnerets of 24-108 is extruded into melt fiber that fused materials enters hole count through spinning pack, then through wind-warm syndrome be 16-35 degree, cold air blast velocity is the cooling air quenching of 0.3-1.5 m/min, then the hot-rolling through 50-90 degree stretches, draw ratio is 1.5-3.0 times, then be coiling and molding on the up-coiler of 1500-3000 m/min at winding speed, obtain easy dyeing polypropylene fibre.
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| JP6968358B2 (en) * | 2017-08-03 | 2021-11-17 | 富山県 | Chemical fiber dyeing method and dyed non-denatured polyolefin fiber |
| CN107513219A (en) * | 2017-09-20 | 2017-12-26 | 阜南县鲲鹏塑业科技有限公司 | A kind of preparation method of easy dyeing plastic master batch |
| CN111793843B (en) * | 2020-07-13 | 2023-03-10 | 常熟涤纶有限公司 | A kind of dark dyeable polypropylene fiber and its preparation method |
| CN116375399B (en) * | 2023-03-22 | 2023-10-24 | 河源市源隆新型环保建材有限公司 | Dry-mixed thin-layer anti-cracking plastering mortar and preparation method thereof |
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Effective date of registration: 20191031 Address after: 516000 Qiu Long Town, Huiyang District, Guangdong, Huizhou Patentee after: Huizhou Orient Carpet Manufacturing Co., Ltd. Address before: The 516221 Guangdong Industrial Zone Huiyang District Huizhou City, long town of autumn Patentee before: HUIYANG ZHONGHE HUIXIN CHEMICAL FIBER CO., LTD. |