CN108149341A

CN108149341A - A kind of easily dye island PTT long filaments and preparation method thereof

Info

Publication number: CN108149341A
Application number: CN201810177347.1A
Authority: CN
Inventors: 关乐; 刘虎易; 何小林; 邹凯东; 郑志刚
Original assignee: Suzhou Longjie Special Fiber Co Ltd
Current assignee: Suzhou Longjie Special Fiber Co Ltd
Priority date: 2018-03-05
Filing date: 2018-03-05
Publication date: 2018-06-12

Abstract

The object of the present invention is to provide a kind of easily dye island PTT long filaments：Using COPET slices as sea component, using PTT slice and copolyamide master batch as island component；Wherein in the component of island, copolyamide master batch is 2%~8% to the mass fraction of PTT；Wherein copolyamide carried out polycondensation by binary acid and diamine before this and polyamide is made, and then added in sulfonate, form the copolyamide with sulfonic acid group.The uneven rate of elongation of long filament in the present invention can be controlled in 4% hereinafter, and dyeing utilization rate improve 29 percentage points, increase rate has reached 42.6%, and the time of painting reduces 15min, amount of decrease has reached 37.5%, while can reduce the discharge of waste water again, it economizes on resources, realizes environmental protection.Avoid existing sea island filament production dyeing cost height, dye dosage height, finished product poor color fastness, the unfavorable factor of effect on environment.

Description

A kind of easily dye island PTT long filaments and preparation method thereof

Technical field

The present invention relates to chemical fiber field, specially a kind of easily dye island PTT long filaments and preparation method thereof.

Background technology

As reform and opening-up achievement is increasing, numerous people quality of life improves to be getting faster, and people are increasingly to U.S. A good life has fine yearning, everybody be also for the demand of high-quality product it is more and more extensive, with social demand not Disconnected development, the textile demand of excellent properties is also increasing, at the same everybody for color diversity and fabric is needed to contaminate Color is gorgeous, can embody active and velvet, embodies the elegant of dress ornament.Furthermore also need to embody the need of elasticity in wearability It asks, makes dress more comfortable, it is personal, the advantages that no ancient attendants in charge of cart and horses for aristocrats folding, drapability is good, it is also desirable to be comfortable on, be soft, is comfortable and easy to wear, It is ventilative, while everybody is also more next to environmental protection payes attention to, the dye utilization rate in dyeing course is also everybody focus.

Sea-island fibre (silk) is that a kind of polymer is scattered in another polymer, and dispersed phase is in fibre section " island " state, and parent is then equivalent to " sea ", is that the state that a kind of ingredient is disperseed with fine is another in terms of the cross section of fiber A kind of ingredient surrounds, as marine there are many island.Sea-island fibre is single by the way that with the reduction of fibre number, diameter attenuates The surface area of position weight fibres increases.With the increase of surface area, the covering power of fiber increases, and moisture pick-up properties substantially improves, With high spreadability, and since fiber is ultra-fine, fiber is more soft, and fabric is made, and can generate the core sucting action of capillary, make Fabric adsorbs more juicy, and can these moisture be moved to fabric surface, makes its evaporation, increases the comfort of dress, feel It is soft, comfortable and easy to wear, while the diameter of superfine fibre is smaller, the radius of curvature of fiber is bigger, and the scattering light of surface reflection accounts for Ratio it is bigger, make the tone of fabric surface than milder, since sea-island fibre develops its fabrics feel soft, drapability is good, Quality is frivolous, can carry out various surface treatments, obtain panoramic surface effect.There is writing effect on surface, and three-dimensional sense is good； Damp and hot contraction distortion is small, has the saturating vapour effect of good air permeable waterproof, and fabric intensity is high.

Sea-island fibre has two methods of composite spinning method and co-blended spinning method, respectively obtains compound sea-island fibre and blending sea Island fiber, island component are generally PET, PA, and sea component is mostly using COPET, PVA, PE etc..According to soluble component in the fibre Make island phase or the difference of marine facies, compound sea-island fibre is divided into as figured islands-in-sea and non-figured islands-in-sea fiber, figured type sea Island fiber dissolves island therein and obtains doughnut, after non-figured type fiber removes sea therein, obtains the ultra-fine fibre of fabric of island-in-sea type.

For the composite spinning method of sea-island fibre generally with easy hydrolysis degradable polyester (COPET) for sea component, polyester (PET) is island group Point, the ratio on Hai Yu islands is generally 30: 70, high reachable 10: 90.The production of common PET sea island filament and technique compare into Ripe, product development and application make great progress, in recent years, due to polypropylene terephthalate (PTT) fiber Excellent characteristic has obtained extensive purposes, and ptt fiber has good dyeability and better fastness properties, simultaneously It also has the characteristics of excellent bulkiness, wearability, flexibility and strong pollution resistance and itself intrinsic elasticity, is one The very good garment material fiber of kind.This has stronger hair taking but also ptt fiber is a dark horse with furnishing fields Exhibition prospect.

Island ptt fiber has both sea-island fibre and ptt fiber shares characteristic, and fabrics feel soft, drapability is good, quality Frivolous, surface treatment is convenient, and surface effect is good, and there is writing effect on surface, and three-dimensional sense is good；Damp and hot contraction distortion is small, has good The saturating vapour effect of air permeable waterproof, fabric intensity is high, while fabric has an excellent vertical property, comfortable elasticity, and excellent elongation is extensive It is multiple, there are excellent dyeability and Printing Characteristics, there are chromatic colour and easy-care properties.

Present island ptt fiber is generally adopted by the mode of blending come what is produced, and which leads to its uniform content Property it is insufficient, dyeing grade is not high, extends that uneven rate is big, and fabric color effect is irregular, and technique controlling difficulty coefficient height etc. A series of shortcoming.Chinese invention patent such as Publication No. CN101608351 disclose a kind of fusing alloying island fibre and The ingredient of its production method, wherein island is PTT, and extra large ingredient is PE, and production method is：PTT slice is dried；With PE It is mixed by a certain percentage；Spinneret after carrying out melt blending into screw extruder, the fiber formed after spinneret through boundling, lead It stretches, crimp, thermal finalization, being made after cutting into the fiber of certain length on demand according to the requirements of weaving process in rear road with cotton or wool blend Cotton or wool type fiber.The technology uses co-blended spinning technique, and existing deficiency is the uniformity of two kinds of polymer blending Poor, sea-island fibre can form the drawbacks such as the not uniform fibrillation in longitudinal direction is over or under, the short fibre of fabric of island-in-sea type of this PTT after fibrillation Dimension cannot be directly used to weave.

And relatively traditional sea-island fibre, the color fastness of dyeing, the dye utilization rate of dyeability is not also high, during colouring Between it is long, upper colour efficiency is low, and elasticity, and flexibility, vividness is also required to improve, and the utilization rate of dyeing is not high also to be directly resulted in The poor performance of dyeing, can not realize extensive colour system, the discharge of waste water is more, and resource is not saved, not environmentally.This is but also existing The unfavorable factors such as sea-island fibre production dyeing cost height, dye dosage height, finished product poor color fastness, effect on environment be big.

The Chinese invention patent of Publication No. CN1331763 discloses a kind of polypropylene terephthalate (PTT) fibre Dimension, the manufacturing method of the ptt fiber include：By inherent viscosity be 0.7~1.3 PTT with the draft speed of below 2000m/min Melt spinning is carried out, the undrawn yarn of acquisition is stretched with stretching-machine, and is heat-treated.However use the spinning technique can not The ptt fiber of below 0.3dpf is obtained, and uses the Publication No. CN102418169A spinning techniques that can not be extended not Even rate controls the ptt fiber below 4%.

In fashionable dress and decorative material material, have sea-island fibre and ptt fiber comprehensive performance long filament (also cry long fibre or Person is drafting silk), there is wide application market, the requirement protruded is to need textile dyeing gorgeous, can embody active and suede Sense embodies the elegant of dress ornament.It also needs to embody the demand of elasticity in wearability, allows and wear more comfortable, personal, a no ancient attendants in charge of cart and horses for aristocrats The advantages that folding, drapability is good.Therefore the evening ratio, dyeability, the item that pay special attention to elongation is needed to do when producing long filament equal The indexs such as even property, and high-end clothes are used as, intensity has certain requirement, and the bursting strength and lateral, warp-wise after weaving are torn Broken strength is also that client's concern requires a little.

Moreover in processing preparation process and production process, the factors such as dyeing, color fastness and wearability are also necessary Take into account, every process control during production PTT is corresponded to, when including dry to the factor that product influences in preparation Between and influence of the temperature to long filament, influence of the melt residence time for PTT, influence of the component pressure for island PTT sections, Influence of each technology controlling and process point of spinning to product, the selection of winding process is to enclosing the control problem of lousiness.

Invention content

The technical problems to be solved by the invention are to provide a kind of easily dye island PTT long filaments, not only with island Fiber it is soft, drapability is good, and quality is frivolous, and surface treatment is convenient, and surface effect is good, and there is writing effect on surface, three-dimensional Feel；Damp and hot contraction distortion is small, has the characteristics such as the saturating vapour effect of good air permeable waterproof, fabric intensity height, while must also have There is an excellent vertical property of ptt fiber, Comfortable elastic, excellent elongation recovery, dyeability and Printing Characteristics and are exempted from chromatic colour Scald the good characteristics such as property.The content uniformity for the island ptt fiber that the mode being generally blended also is overcome to produce simultaneously is insufficient, It is not high to dye grade, extends that uneven rate is big, and fabric color effect is irregular, and technique controlling difficulty coefficient height etc. is a series of Shortcoming.

The preparation method of the long filament is provided, and fully consider it simultaneously, processing technology, processing preparation process and production process In, the influence of the factors such as dyeing, color fastness and wearability corresponds to every process control during production PTT, is making Include influence drying time and temperature to long filament in standby on the factor that product influences, influence of the melt residence time for PTT, Influence of the component pressure for island PTT sections, influence of each technology controlling and process point of spinning to product, the selection of winding process is to circle The control problem of lousiness.

The cooling of the long filament is also a kind of technical barrier simultaneously, it is also desirable to solve, especially be reached if can be quickly cooled down Blowing fairing to ideal effect be also the invention solves another problem；

Easily dye island PTT long filaments, mainly around the excellent of dyeability, can realize extensive colour system, while can subtract again The discharge of few waste water, economizes on resources, and realizes environmental protection.Avoid high existing sea island filament production dyeing cost, dye dosage height, finished product color Fastness is poor, the unfavorable factor of effect on environment.The intended applications of the product are women's dress, sofa fabric, high-end curtain, ornament materials And purity material of high-end electric appliance etc..

To solve the above problems, using following scheme：

A kind of easily dye island PTT long filaments：Using COPET slices as sea component, using PTT slice and copolyamide master batch as island group Point；

Wherein in the component of island, copolyamide master batch is 2%~8% to the mass fraction of PTT；

Wherein copolyamide carried out polycondensation by binary acid and diamine before this and polyamide is made, and then added in sulfonate, shape Into the copolyamide with sulfonic acid group；

Wherein polycondensation is made process and is, using p-phthalic acid and hexamethylene diamine as base stock, with phosphorous acid and tricresyl phosphate Phenyl ester makees catalyst, adds in a small amount of antioxidant 1010, carries out precondensation, when reaction proceed to 2 it is small when, from stirring work( Rate sees that system viscosity increased, and at this moment adds in the double hydroxyl ethyl ester -5- sodium sulfonates (SIPE) of three monomer M-phthalic acids.It is reacted Formula is represented by：

The dyeing of fiber is actually a diffusion process of the dye molecule to fiber surface and fibrous inside, and dye Fastness is related with the hydrogen bond in fiber and polar group.Because the dyeing of fiber or fabric is dyestuff by Coulomb force, Van der Waals Power and hydrogen bond, upper dye fiber or fabric.It adds in copolyamide and increases hydrogen bond and polar group number in fiber or fabric, thus can Accelerate the upper dye of dyestuff, fiber or fabric its color fastness contaminated also has significant raising.

The maximum difference of easy dye type island PTT long filaments and conventional fibre is that single fiber line density is small, the specific surface area of fiber Greatly, so for conventional PTT, its dyeability is better than routine PTT, but for dyeing, the two difference nothing It is several.The factors such as dyeing, color fastness and wearability are considered when preparing easy dye type fabric of island-in-sea type PTT long filaments, thus are added in Above-mentioned copolyamide can not only improve its dyeing, but also can increase its color fastness in this way.

The preparation method of above-mentioned easy dye island PTT long filaments, includes the following steps：

(1) making of sea component raw material melt, mainly includes the following steps that：

Step A：Crystallization, using COPET slices as sea component, by it is crystallizing bed carry out it is pre-crystallized, crystallization temperature for 120~ 150 DEG C, for crystallization time in 19~22min, crystallinity is 38~40%；

Step B：It is dry, it dries by drying tower, is dried at being 130~145 DEG C in temperature；It is done by 6~6.5h Moisture content of the raw material after dry is less than or equal to 18ppm；

Step C：Melting is melted, extra large feed screw extruder after dry by reentering extra large feed screw extruder A certainly In A；Screw extruder A is equipped with 6 heating zones, and the temperature in each area is at 250~275 DEG C；

Step D：It squeezes out, the COPET melts squeezed out by screw extruder A ensure screw rod through temperature sensor measurement Extrusion temperature is at 260~269 DEG C, while pressure sensor measures the extrusion pressure of melt, ensures in Screw Extrusion pressure 9.0 ~10.0MPa；

Step E：Spinning manifold enters spinning manifold A, outside the pipe melt road that melt flows through by filter by melt pipe Face is equipped with thermal-insulating body, and thermal-insulating body is equipped with 6 flat-temperature zones, and flat-temperature zone has thermal insulation medium, and thermal insulation medium is biphenyl, is passed through Heating and biphenyl thermal insulation medium cause the constant of everywhere temperature in babinet so that may insure it is entire it is each area and temperature At 245~270 DEG C；

Step F：Metering reaches metering pump A, and the group of the extra large component of each filament spinning component is assigned to by isometric melt arm Part intracavitary, during spinning, extra large component meets the pressure of component in 90~110kg/22cm, and the backside pressure of spinneret is more than 50kg/ cm；

(2) making of island component raw material melt, mainly includes the following steps that：

Step 1：It is dry, using PTT slice and copolyamide master batch as island component, done at being 130~145 DEG C in temperature It is dry；It is less than or equal to 18ppm by the dried moisture content of the raw material of 6~6.5h；

Step 2：Melting is melted, feed screw extruder B after dry by reentering island feed screw extruder B certainly In；Screw extruder B is equipped with 6 heating zones, and the temperature in each area is at 250~275 DEG C；

Step 1：It squeezes out, by the PTT melts that screw extruder B is squeezed out through temperature sensor measurement, ensures squeezing for screw rod Go out temperature at 260~269 DEG C, while pressure sensor measures the extrusion pressure of melt, ensure Screw Extrusion pressure 9.5~ 10.5MPa, melt enter viscosity regulator through PTT melt pipes,

Step 2：Viscosity regulator, by adjusting residence time and temperature so that PTT raw materials molten less than or equal to 2m Total residence time is 7~8min in body pipeline, and temperature is controlled at 254~270 DEG C, and it is 0.87~0.94 to obtain melt viscosity PTT solutions obtain the polymer for the best melt viscosity for being adapted to the application of PTT sea-island fibres；

Step 1：Spinning manifold enters spinning manifold B, outside the pipe melt road that melt flows through by filter by melt pipe Face is equipped with thermal-insulating body, and thermal-insulating body is equipped with 6 flat-temperature zones, and flat-temperature zone has thermal insulation medium, and thermal insulation medium is biphenyl, is passed through Heating and biphenyl thermal insulation medium cause the constant of everywhere temperature in babinet so that may insure it is entire it is each area and temperature At 265~270 DEG C；

Step 2：Metering reaches metering pump B, and the group of the extra large component of each filament spinning component is assigned to by isometric melt arm Part intracavitary, during spinning, extra large component meets the pressure of component in 90~110kg/22cm, and the backside pressure of spinneret is more than 50kg/ cm；

(3) component：By the COPET sea components raw material melt squeezed out after metering pump A accurate measurements and by metering pump B essences The PTT and copolyamide island component raw material melt really squeezed out after metering is sent into manifold, the press-in distribution of quantitative and even together In composite spinning jete component in spinning manifold, island component is evenly distributed to sea component by the distribution duct in component In, it is sprayed by same spinneret orifice；Composite spinning jete component is by spinneret, distribution plate, filter screen, filter sand and component body group Into, mechanical admixture and agglutination particle in melt are further filtered by the filter screen in component and filter sand, and in component into One step is sufficiently mixed, and prevents the difference of temperature-viscosity, simultaneously because melt passes through the filter screen of high-drag and mistake at elevated pressures Filter sand makes melt generate high shear rate, that is, improves the mobile performance of melt, and melt temperature is made instantaneously uniformly to improve, The uniform of melt stream quality is sprayed so as to ensure that；

(4) spinning under the speed of 800~1000m/min, carries out spinning；

(5) it cools down, under the wind speed of 0.3~0.7m/s, temperature passes through blowing apparatus and blowing rectification at 19~20 DEG C Device is cooled down, and cross air blasting wind pressure, temperature and the wind speed stabilization of fairing of being dried by control change vibration frequency, make The irregularity that must be extended is controlled below 4%；

(6) it oils, carries out oil nozzle after cooling and shaping or oil tanker oils,

(7) drawing-off, then drawn through pre- network, the first draw-off godet, second spinning reel, it is led in the situation of 3200m/min speeds It is 2.3~2.5 to stretch multiple, is 2.0~2.2 in the situation drafting multiple of 4500m/min speeds；

(8) it shapes, is 14~16CN in T3 tension, is shaped by forming machine；

(9) grid, then by being wound after master network,

(10) POY precursor is wound into, is wound to form undrawn yarn on finished product up- coiler, the speed 2300 of winding~ 3000m/min；

(11) add bullet with high convergency FDY plying；

(12) it obtains using PTT and copolyamide as island component, COPET is the easy dye type island PTT long filaments of sea component, is had Super easy dyeing, the easy dye island PTT long filaments of highly shrinkable energy

Above-mentioned easy dye island PTT long filaments easily contaminate the blowing fairing of island PTT long filaments, include heat-insulating shield, air inlet, Rectification space, rectification layer are further included；

Preferentially, the height of the rectification layer is the thickness b of a, the rectification layer, and convolution and disturbance are played to rectification Effect, so as to change its vibration frequency f,

Vibration frequency f meets relationship below with temperature change：

Wherein T is environment temperature；

L is length of the spinneret to tow fixed point；

F is the spinline tension of tow；

E is the elasticity modulus of tow；

M is the weight of the unit length of tow；

A is rectification layer height；

B is rectification layer thickness；

T-T₀Variable quantity for environment temperature；

Preferably, the fairing is additionally provided with bellows, bellows positive bottom has metal mesh, is set respectively on bellows inner wall A blinker, the second blinker, third blinker are equipped with, bellows are divided into and are followed successively by the first air compartment, the second wind under by upper Room, third air compartment, the 4th air compartment；

Preferably, the first cowl flap, the second cowl flap, third are also respectively provided between the first air compartment and air inlet to lead to Wind piece, the 4th cowl flap, the 5th cowl flap；There is gap, respectively first passage, second channel, the between each cowl flap Triple channel, fourth lane；The first ventilation opening, the second ventilation opening, third is also correspondingly arranged on respectively on the cowl flap to lead to Air port, the 4th ventilation opening, the 5th ventilation opening；Cooling wind enters air inlet by ventilation opening and channel and reaches rectification space；

Preferably, the blowing rectification is additionally provided with device pressure stabilizing chamber, and the first voltage stabilizing is equipped with successively below the pressure stabilizing chamber Stratification of wind, the second voltage stabilizing stratification of wind, third voltage stabilizing stratification of wind, the 4th voltage stabilizing stratification of wind.

Compared with prior art, the present invention has following clear advantage：

1. the irregularity of elongation is low, the dyeability of fiber is improved using copolyamide is added in, it is high that PTT belongs to a kind of line style Polymers, regularity is good, and the close packing of strand, crystallinity and the degree of orientation are all higher, PTT because of molecular structure helically Shape though dyeability is better than PET, due to lacking the hydrogen bond and polar group that can be combined with dyestuff on its strand, adds in one Copolyamide is planted to improve the dyeability of island PTT drafting silks.The present invention is using using PTT and copolyamide as island component, COPET is Sea component, the irregularity of elongation can be controlled 4% hereinafter, product not only has the characteristic of common sea-island fibre, also had Elastic force is high, resistant to lodging, dye uptake is high, color fastness is high, finished color is gorgeous, does not play an ancient attendants in charge of cart and horses for aristocrats, and non-ironing, fiber has the spy of memory function Point, is a kind of ideal high-grade fabric fiber, great market value.

2. online PTT viscosity is controlled：Production for ptt fiber, there is document announcement：Think that melt residence time is shorter Better, the present invention has found the shortcoming of above-mentioned theory from conventional PTT and the easily production of dye island PTT long filaments, for temperature Viscosity can be controlled to drop by improving temperature and shortening the residence time for the high molecular material of quick property difference, still, PTT is one The temperature sensitive material of building a house of kind, the variation of temperature is very big on polymer degradation influence, what this present invention was obtained from practice Conclusion is that PTT melts are preferably applicable in reduction temperature and the residence time is appropriately extended.Experiments have shown that the residence time of PTT melts is from screw rod Export to spinneret come out time should be between 7-8min it is best, it is long it is too short all can to production adversely affect, It is main to influence to increase for the end breakage rate of fiber in production.To solve the above-mentioned problems, the mode that we use is pipe design It is shorter as far as possible, it generally in 2m or so, is then adjusted with apparatus for regulating viscosity, according to the difference of kind, stopped to meet The time is stayed, meets needs of production.

3. with energy-saving and emission-reduction effect, easily contaminate island PTT long filaments have environmentally friendly, energy saving, elastic and velvet, be it His fibrous material is irreplaceable, and the ratio of easy hydrolysis degradable polyester slice is reduced to 15%, and national energy-saving emission reduction, cleaning are given birth to Clearly, the successful exploitation for easily contaminating island PTT long filaments has guided the use direction of PTT, realizes product scope for the effect of production Expansion, comply fully with diversification product development, the requirement of high-performance a new generation technical industry is promoting and applying ptt fiber Aspect has played a good example.Simultaneously 150 will be increased weight to the fabric that fiber weaving enterprise is prepared into 1000 tons of fibers Ton, that is to say, that the grammes per square metre of fabric will increase by 15%, and fabric is made to become more plentiful, thick and solid.Furthermore in printing and dyeing mill to fabric It handles the COPET of few 150 tons of processing, the dosage of raw material can be saved in this way but also greatly reduce the processing of sewage.The present invention With the excellent of dyeability, extensive colour system can be realized, dyeing utilization rate of the invention improves 29 percentage points, increase rate Reach 42.6%, and the time of painting reduces 15min, amount of decrease has reached 37.5%, while can reduce the discharge of waste water again, It economizes on resources, realizes environmental protection.Avoid existing sea island filament production dyeing cost height, dye dosage height, finished product poor color fastness, to environment The unfavorable factor of influence

4. easy dye island PTT long filaments provided by the present invention, not only with the soft of sea-island fibre, drapability is good, Quality is frivolous, and surface treatment is convenient, and surface effect is good, and there is writing effect on surface, and three-dimensional sense is good；Damp and hot contraction distortion is small, has The characteristics such as the good saturating vapour effect of air permeable waterproof, fabric intensity height, while must also have the excellent vertical property of ptt fiber, comfortably Elasticity, excellent elongation recovery, dyeability and Printing Characteristics, the good characteristics such as chromatic colour and easy-care properties.Simultaneously also gram The content uniformity for the island ptt fiber for having taken the mode of general blending to produce is insufficient, and dyeing grade is not high, and elongation is uneven Rate is big, and fabric color effect is irregular, and a series of shortcoming such as technique controlling difficulty coefficient height.

5. technology controlling and process is good, control degree-of-difficulty factor reduces, while the preparation method of the long filament in the present invention, and fully considers It, in processing technology, processing preparation process and production process, the influence of the factors such as dyeing, color fastness and wearability is right Every process control during PTT should be produced, drying time and temperature are included to length on the factor that product influences in preparation The influence of silk, influence of the melt residence time for PTT, influence of the component pressure for island PTT sections, each technique control of spinning Influence of the system point to product, the selection of winding process is to enclosing the control problem of lousiness.

6. the present invention stablizes by the cross air blasting wind pressure and wind speed of control blowing fairing, using the pressure as control The technological parameter of product quality, with prior art using common blowing device as control product quality technological parameter compared with Under identical wind conditions its it is dry and its extend it is irregular can effectively control, and cooling velocity is fast, good cooling results improve Product quality.Item does control technology：PTT is dry to item to be required very high, and the raising of a dry values can be all formed for any interference, Therefore we have done more article in the mode of blowing window and the cover board of oil nozzle, have reached the satisfaction of a dry values.

Description of the drawings

Fig. 1 is the molecular conformation figure (T of PTT polymer of the present invention_g=45~65 DEG C)；

Fig. 2 is the molecular conformation figure (T of pet polymer of the present invention_g=70~80 DEG C)；

Fig. 3 is the DSC curve of PTT and PET of the present invention (wherein curve 1 is PT, and 2 be PET)；

Fig. 4 is (wherein 1-250 DEG C of influence compares figure of the melting time of the invention to PTT content of carboxyl end group；2-260℃；3- 270℃)；

Fig. 5 is influence comparison diagram (wherein 1-10min of the temperature of the present invention to PTT content of carboxyl end group；2-20min；3- 30min)；

Fig. 6 is the process curve figure of the dyeing of the present invention；

Fig. 7 is the fabrication processing figure of the present invention；

Fig. 8 is the nuclear structure schematic diagram of the blowing fairing of the present invention；

Fig. 9 is the overall structure diagram of the blowing fairing of the present invention；

Figure 10 is the A-A cross-sectional views of the blowing fairing of the present invention；

Figure 11 is the B-B cross-sectional views of the blowing fairing of the present invention；

Figure 12 is the C-C cross-sectional views of the blowing fairing of the present invention；

In attached drawing

1 spinneret, 2 spinneret assembly, 3 heat-insulating shield

4 rectification layer, 5 long filament, 6 rectification space

7 air inlet a rectification layer height b rectification layer thickness

8 bellows, 9 pressure stabilizing chamber, 10 first voltage stabilizing stratification of wind

11 first layer piece, 12 second voltage stabilizing stratification of wind, 13 second layergram

14 15 third layergram of third voltage stabilizing stratification of wind, 16 relieve heat metal mesh

17 the 4th voltage stabilizing stratification of wind, 18 air hose, 19 exhaust fan

20 wrapping wire spool, 21 wheel 22 enters the wind metal mesh

801 first blinker, 802 second air compartment, 803 second blinker

805 third blinker, 811 first cowl flap, 8,110 first ventilation opening

820 first passage, 812 second cowl flap, 8,120 second ventilation opening

830 second channel, 813 third venting piece, 8130 third venting mouth

The 4th ventilation opening of 840 the 4th cowl flap 8140 of third channel 814

The 5th ventilation opening of 850 the 5th cowl flap 8150 of fourth lane 815

Specific embodiment

In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Specific embodiment is closed, the present invention is further explained.

Embodiment one

(4) spinning under the speed of 800~1000m/min, carries out spinning；

(8) it shapes, is 14~16CN in T3 tension, is shaped by forming machine；

(9) grid, then by being wound after master network,

(11) add bullet with high convergency FDY plying；

The present invention is directed to the characteristics of PTT, is transformed in original equipment and produces conventional ptt fiber, exploitation " easily dye Island PTT long filaments ".Through analyzing the design feature of PTT macromoleculars, from the drying of slice, melting, be orientated, be drawing to finally into The principle of type is designed, is prepared for " easily dye island PTT long filaments "

The properity of PTT and COPET are analyzed first, mainly made their rheological property, DSC, thermostabilization Property etc. research, then for both performance design process route, product is divided again during experiment Analysis.Summary is transformed equipment, by repetition test, the product tested out for rear road is tried out, listens to the meaning of rear road user See and suggest, technique is carried out perfect.Final production goes out the product for meeting rear road user requirement.The easily base of dye island PTT long filaments This technology is characterized in that the equipment using existing production sea-island fibre carries out appropriate reconstruction to realize the demand of production high-end product, with COPET is marine facies, and PTT and copolyamide master batch are island phase, are merged and squeezed out by sea island filament (composite component) component, are cooled to Shape prepares easily dye island PTT long filaments,

(1) raw material technical parameter

A, it is sliced source

PTT slice Dupont modified polyamide of the present invention

Chipping qualities index

Inherent viscosity：1.020dL/g

Content of titanium dioxide 0.3%

50 1.618g of particle

B values 8.7

Fusing point：228℃

COPET slices Wujiang is newborn

Chipping qualities index：

Inherent viscosity：0.50dL/g

238 DEG C of fusing point

Diethylene glycol (DEG) 4.0%

The dissolution time 80min in lye

Modified polyamide (self-control)

Inherent viscosity：0.58dL/g

185 DEG C~190 DEG C of fusing point

B, spinning oil：Japanese this ZG1010 of bamboo oil concentrations 12%

(2) dry technology scheme

Although PTT and PET belongs to polyesters high polymer, but by the number of methylene connected on its macromolecular chain Mesh is different and has different structures.There is the important differences of three aspects between PTT and pet polymer：First, PET gathers The macromolecular conformation linearly shape of object is closed, and the molecular conformation of PTT polymer is then helical form.As shown in Figure 1, in T_g= The molecular conformation figure of PTT polymer in the case of 45~65 DEG C.

Spiral helicine molecular conformation will allow ptt fiber height " puffing ", be conducive to give play to good elastic property.Its It is secondary, the glass transition temperature T of PTT polymer_gIt is relatively low, its yarn or fabric is allowed to dye at a lower temperature, it is possible to reduce Energy expenditure in processing.Third, the Young's modulus of PTT polymer is relatively low, thus fabric has more soft hand compared with PET Sense.As shown in Fig. 2, in T_gThe molecular conformation figure of pet polymer in the case of=70~80 DEG C.

According to the structure feature of PTT, further to work out more rational technological parameter, we are to PTT polymer Performance is studied.Mainly have：

1. fusing point and DSC curve

The DSC curve of polymer is particularly useful tool.Stoichiometric Polymerization object occurs such as in temperature-rise period is carried out The hot property of the processes such as fusing and crystallization, detects the variation in fusing system thermal when events occur.Therefore the DSC of polymer Curve is to we providing useful information more extensive than fusing point and abundant.It is for further analysis to these information, it can With help, we deepen many features for understanding PTT polymer in melt extruded and spinning technique, understand polymer with adding Many properties of product made of work.

DSC curve comparison and control such as Fig. 3 of PTT and PET such as shows.Curve 1 is PTT in figure 3, and 2 be PET.It can from Fig. 3 To find out, PET has glass transition peak, cold crystallization exothermic peak and melting absorption peak.There is cold junction at 145 DEG C or so places in PET Brilliant peak, and PTT does not have then, illustrates the crystallization degree of perfection of PTT significantly than PET high；Secondly the glass transition temperature T of PET_gIt is 79 DEG C, and PTT between 50~229 DEG C without apparent glass transition temperature, illustrate that the glass transition temperature of PTT is relatively low.From figure also As can be seen that the melting peak of PTT is more sharp than PET, illustrate under identical melt cooling condition, by crystallizing the PTT crystal grain formed Compared with PET improve with it is uniform.

The melt viscosity and rheological characteristic of 2.PTT polymer

High molecular polymer melt is typically non-newtonian fluid, that is to say, that even if at the same temperature, when shearing speed When rate changes, melt viscosity can not be constant, will also change.The melt of PTT polymer is also in this way, melt viscosity It is reduced with the raising of shear rate.

Research shows that PTT polymer melts are typical non-newtonian fluids, its shear thinning in the molten state Become apparent than PET melt, and the viscous flow activation energy of PTT polymer melts is higher, melt viscosity to the dependence of temperature compared with Greatly, so PTT polymer is during melt spinning, strict temperature control parameter is implemented just to seem for the normal of spinning technique It is more important.

3. the variation of carboxyl-content

In polymer carboxyl-content number show the number of the macromolecular in the aggregate of a polymer, in certain meaning It is said in justice, shows the thermal stability of macromolecular.At different temperature and different residence times, the variation of PTT end carboxyls Such as influence compares figure of Fig. 4 melting times to PTT content of carboxyl end group, (wherein 1 represents 50 DEG C；2 represent 260 DEG C；3 represent 270 DEG C) With influence comparison diagram (wherein 1-10min of Fig. 5 temperature to PTT content of carboxyl end group；2-20min；3-30min).

As the rising of temperature, PTT content of carboxyl end group will increase, and temperature is higher, carboxyl it can be seen from Fig. 4 and Fig. 5 Content increase is faster.With the extension of time, PTT content of carboxyl end group increases are also faster.From the slope of straight line as it can be seen that during temperature ratio Between on PTT content of carboxyl end group influence bigger.Therefore, must be strictly controlled temperature in PTT melting process, to prevent degrade excessively and Influence being normally carried out for spinning technique.

4. the chromatophilia of fiber

The maximum difference of easy dye type fabric of island-in-sea type PTT drafting silks and conventional fibre is that single fiber line density is small, the ratio table of fiber Area is big, so for conventional PTT, its dyeability is better than routine PTT, but for dyeing, the two phase Difference is very few.We consider when preparing easy dye type fabric of island-in-sea type PTT drafting silks dyeing, color fastness and wearability etc. because Element, thus a kind of copolyamide is added in, it can not only improve its dyeing in this way, but also its color fastness can be increased.

(1) preparation of copolyamides

Copolyamide is a kind of high polymer synthesized by our research and development centres oneself, it is that have binary acid and diamine to carry out Shrink, which gathers, is made polyamide, then adds in sulfonate, forms the copolyamide with sulfonic acid group.

We make catalyst with phosphorous acid and triphenyl phosphate, add using p-phthalic acid and hexamethylene diamine as base stock Enter a small amount of antioxidant 1010, carry out pre- Shrink and gather, when reaction proceed to 2 it is small when, in terms of power of agitator, system viscosity is increased Add, at this moment add in the double hydroxyl ethyl ester -5- sodium sulfonates (SIPE) of three monomer M-phthalic acids.Its reaction equation is represented by：

The dyeing of fiber is actually a diffusion process of the dye molecule to fiber surface and fibrous inside, and dye Fastness is related with the hydrogen bond in fiber and polar group.Because the dyeing of fiber or fabric is dyestuff by Coulomb force, Van der Waals Fiber or fabric are contaminated in power and hydrogen bond.It adds in copolyamide and increases hydrogen bond and polar group number in fiber or fabric, thus can Accelerate the upper dye of dyestuff, fiber or fabric its color fastness contaminated also has significant raising.We are by common PTT sea island filaments and not It is dyed on PTT islands with addition copolyamide.

(2), dyeing

Fiber is first handled before dyeing, and required fiber ether is impregnated 50 minutes, deionization is used after taking-up Water is cleaned, and in ventilation airing, weighs the fiber of certain mass, is then placed in BAOLING RY25012 normal pressures type dye model machine, Process curve as described in Fig. 6 is dyed.

(3), it tests

(a), dye uptake

Dye uptake is calculated as follows：

In formula, C₁、C₀The respectively absorbance of raffinate and blank dye liquor.

(b), the measure of dyefastness

By GB/T3920-1997《Textile color stability tests colour fastness to rubbing》, in Y571B type dyefastness frictions It is carried out on instrument, result is as follows

1 disperse dyes RD of table is to the dye-uptake of different samples

Note：No. 0 is the PTT sea island filaments for being not added with copolyamide；It is 2%, 4%, 6% that 1~No. 4 is added copolyamide respectively, 8% (to the mass fraction of PTT)

2 dyefastness of table

2. process implementing

(1) prepared by master batch

Blending is carried out using Japan's Semco measurement mixing units, and homemade copolyamide is added in certain proportion Blending is carried out into PTT and is prepared into master batch.

(2) it is dry

It is mainly characterized by：PTT slice does not need to carry out crystallization treatment, have when but must be dried, while dry with Lower characteristic improves temperature when dry, is conducive to the discharge of moisture, and rate of drying is accelerated, and shortens the dry time, dried to cut The equilibrium moisture content of piece reduces, but also brings along many side reactions, for example, such as thermal cracking, thermal oxidative degradation, pyrohydrolysis are not Sharp factor.

(a) we are suitable in 130~145 DEG C of comparisons drying temperature control by experiment repeatedly for drying temperature.

(b) drying time drying time is related with dry mode, and in the equipment of same drying, drying time extends then It is sliced moisture content to decline, but side reaction will also increase slice at high temperature for a long time, lead to viscosity drop increase, color value turns yellow.Through Multiple orthogonal test is crossed, at 6~6.5 hours preferably, specific data are as follows for drying time general control.

3 drying temperature of table is to intrinsic viscosity, aqueous, spinning properties impact analysis

Table 4 is in influence of the 135 DEG C of drying times of drying temperature to spinning situation

	4 hours	6 hours	6.5 hour	8 hours	10 hours
						Aqueous ppm	28	18	18	19	20
It is sliced color and luster	Normally	Normally	Normally	Normally	Micro- Huang
						Spinning situation	A small amount of silk that floats	2	2	2	6

(3) spinning technique is determining：

The specific spinning technique of production of COPET is：120~150 DEG C of crystallization temperature；130~145 DEG C of drying temperature；Spiral shell 260 DEG C of bar temperature；263℃；268℃；269℃；269 DEG C, it is 268 DEG C that thermal insulation medium, which is biphenyl its temperature,.Ptt fiber is used It is mainly analyzed from the following aspect in the process conditions of sea island filament：

Influence of 5 melt viscosity of table for PTT sea-island fibres.

Melt residence time influences island ptt fiber at a temperature of 6 268 DEG C of biphenyl of table.

Influence of the melt temperature for island ptt fiber in the case of 7 residence time of table 8min

It was found from data above analysis：Temperature, residence time have the viscosity and production status of PTT sea-island fibres very sensitive Influence, while should also pay close attention to, what control viscosity cannot be simply is adjusted by cooling down, if more than centainly Amplitude can influence the normal operation of equipment, spinnability drastically declines.In order to realize above-mentioned requirements, this present invention has invented one kind Melt viscosity regulating device mainly adjusts melt viscosity, so as to ensure according to the different temperature of kind and residence time Product reaches high-quality.

Due to the characteristic of ptt fiber, for road user thereafter, other than conventional physical index requirement, more require Its homogeneity extended, the irregularity of elongation must be controlled 4% hereinafter, just can guarantee fabric either warp-wise or broadwise not It generates through willow, reduces the generation of fault.The stabilization of elongation is in addition to having accurately viscosity and spinning temperature, having sternly including plate face temperature Outside the control of lattice, cooling is uniformly very crucial factor.Wind speed and wind-warm syndrome control very heavy for PTT sea island filaments Will, the control simultaneously for interference is equally important, and fluctuation a little can all influence item and do and extend deviation Increase.Therefore other than general blowing apparatus, I am of the invention in the situation that cross air blasting wind pressure, temperature and wind speed is kept to stablize Under, and the blowing fairing for preventing that tow from interfering with each other and environment influences is devised, the elongation of product is made uniformly to be controlled.

It blows speed to have an impact tow cooling rate, the uneven rate of elongation of especially high-speed spinning strand POY has a significant impact, wind The fast too small interference in air flow factor to tow is more, and yarn unevenness is caused to increase, and too big then air-flow panting also increases, and amplitude adds Greatly, lead to the silk that floats.By changing vibration frequency so that it is corresponding to temperature change, resonance is prevented, so as to reduce tow not Even rate.

With reference to shown in figure, Fig. 8 is that nuclear structure schematic diagram, Fig. 9 of blowing fairing are the entirety of blowing fairing It is the B-B sections of fairing of drying that structure diagram, Figure 10, which are the dry A-A cross-sectional views of fairing, Figure 11, Structure diagram, Figure 12 are the C-C cross-sectional views of blowing fairing, fairing knot of drying as illustrated in the drawing Structure, with reference to figure, this structure uses the reflux annular air blower for making rectified diffusion layer with sintering metal or sintering carbon, rectification Layer 4 is exactly to be formed using sintering metal or sintering carbon, sintering metal or this kind of material friction coefficient stabilization of sintering carbon, wear-resisting, resistance to The advantages that high temperature, noiseless, mechanical strength are good so by the use of the material as rectification layer, will allow wind steady in rectification layer Convolution.

By the fairing, cooling wind enters bellows 8 from air inlet metal mesh 22, and bellows 8 are by the first blinker 801, the Two blinkers 803, third blinker 805 divide for 4 air compartments, more than blinker, not only with certain effect of keeping out the wind, to ensure Cooling wind has certain convolution and reflux, also with compartmentation, is divided on from lower respectively the first air compartment, second Air compartment 802, third air compartment, the 4th air compartment；After cooling wind enters bellows 8, the 4th air compartment, third wind are sequentially entered from the bottom up Room, the second air compartment 802, the first air compartment；

After cooling wind reaches the first air compartment, the first cowl flap is also respectively provided between the first air compartment and air inlet 7 811st, the second cowl flap 812, third venting piece 813, the 4th cowl flap 814, the 5th cowl flap 815；Have between each cowl flap There are gap, respectively first passage 820, second channel 830, third channel 840, fourth lane 850；And in each cowl flap On be also correspondingly arranged on the first ventilation opening 8110, the second ventilation opening 8120, third venting mouth 8130, the 4th ventilation opening respectively 8140th, the 5th ventilation opening 8150；Cooling wind enters air inlet 7 by ventilation opening and channel and reaches rectification space 6；

Long filament 5 is sprayed from the spinneret 1 in spinneret assembly 2, and heat-insulating shield 3 is by the hot temperature of spinneret assembly 2 and cold But wind is separated, and cooling wind enters to enter back into rectification space 6 from air inlet 7 carries out rectification in rectification layer 4, after rectification Cooling wind so that long filament 5 is cooled down；

Then cooling wind will also reach the first voltage stabilizing stratification of wind 10, the second voltage stabilizing stratification of wind 12, third voltage stabilizing by pressure stabilizing chamber 9 Stratification of wind 14, the 4th voltage stabilizing stratification of wind 17 continue to cool down long filament 5, and long filament 5 is by wrapping wire reel wound, and cooling wind is most at last It is sent out by relieve heat metal mesh 18 and air hose 19 and exhaust fan 19.First layer piece 11, the second layergram 13, third layering Voltage stabilizing stratification of wind is divided into 4 layers by piece 15, while it is also possible that cooling wind reaches certain reflux and convolution so that it reaches more Cooling effect.

Rectification layer height a, rectification layer thickness b play the role of convolution and disturbance to rectification in the process, so as to To change its vibration frequency,

Vibration frequency f meets relationship below with temperature change：

Wherein T is environment temperature；

L is length of the spinneret to tow fixed point；

F is the spinline tension of tow；

E is the elasticity modulus of tow；

M is the weight of the unit length of tow；

A is rectification layer height；

B is rectification layer thickness；

T-T₀Variable quantity for environment temperature.

Irregular analysis (specification 86dt/24*37f) is done and its extended to 8 wind speed of table and item

As can be seen from Table 8, after installing present invention blowing fairing additional, the item of fiber is done apparent with uneven rate of elongation It reduces, is entirely capable of requirement of the road client to high quality of products after meeting.

Table 9^*Blowing temperature does item, the influence of uneven rate of elongation, lousiness

* wind speed is 0.4m/s

It can be seen that from the data of table 9；The side-blown air temperature of easy dye type island PTT is done item and is extended and lousiness It is big to influence Relationship Comparison, cooling is too fast, and crystalline rate is caused to be accelerated, and the first tensile stress of fiber is excessive, causes lousiness, and hair Silk absolutely not allows the post-processing of PTT, and there are one lousiness, and cloth cover is exactly a fault, therefore in above-mentioned technique item Under part, the speed of cross air blasting is in 0.4m/s；Temperature is in the case of 19-20 DEG C most beneficial for production.

3. the selection of winding process.

After supercooling oils, final winding forms product, the selection of winding process, be related to product physical index and Appearance index, the drawing-off of particularly easy dye type island ptt fiber should consider the characteristic of PTT, consider the characteristic of COPET again, The two needs are taken into account simultaneously.Therefore it is to ensure the another key point of quality for the selection of winding process.

Influence of the 10 3200m/min drafting multiples of table for index

Influence of the 11 4500m/min drafting multiples of table for index

Drafting multiple (again)	1.8	2.0	2.2	2.4	2.5
						Elongation %	21	19	18.7	16	16
Intensity cN/dtex	1.84	1.87	1.88	1.80	1.80
						Appearance	Enclose hair	Normally	Normally	Slight lousiness	Slight lousiness

Table 12T3 tension is for molding influence

Tension CN

10

12

14

16

18

20

End face

Well

Slight bulging

Bulging

Enclose hair

Have

Slightly

Nothing

Table 13PH values change the influence to 79 form and aspect of C.I disperse navy blues

PH value	4.5-5	5.5-6	6.6-7	7
					Aberration is graded	4	4-5	4-5	4

14 bath raio of table changes the influence to 54 bright-coloured degree of C.I disperse blues

Bath raio	1：20	1:30	1:40	1:50
					Aberration is graded	4-5	4-5	4-5	4-5

It can show that draw a conclusion the introduction of melt residence time and existing document has more area from data above analysis Not, it is not to say that the shorter the residence time of melt the better, but the residence time in 7-8min is proper, in addition with suitable Spinning temperature from viscous consistency and avoids pipe effect and reduction side reaction object from angularly considering, and final requirement is Viscosity drop is controlled relatively to be suitble to, while the preceding topic to be ensured is melt residence time in 7-8min between 0.87~0.94.

Test situation more than making a general survey of, we have obtained the optimised process for preparing easily dye island PTT long filaments

GR2 speed	4500
		GR2 temperature	126
Elongation	35%
		Intensity	2.45cN/dt
Boiling shrinkage	4.2%
		Oil content	1.31%

Easily dye island PTT long filaments are mainly used for fashionable dress and decorative material material, and prominent requirement is to need textile dyeing gorgeous, Active and velvet can be embodied, embodies the elegant of dress ornament.It also needs to embody the demand of elasticity in wearability, allows dress more It is comfortable, it is personal, the advantages that no ancient attendants in charge of cart and horses for aristocrats folding, drapability is good.Therefore it needs to pay special attention to the uniformity of elongation when producing long filament, dye Indexs such as the uniformity that performance, item are done, and be used as high-end clothes, intensity is in backseat, by and lower road client it is multiple Research, discussion repeatedly, have fully considered the bursting strength of client after weaving and lateral, warp-wise tearing brute force requirement,

It is right in the preparation of easy dye type island PTT to can see from every process control of PTT and from table above Product influence because being known as：

(1) drying times and temperature are to easily contaminating the influences of island PTT long filaments

(2) influence of the melt residence times for PTT

(3) influence of the component pressures for easily dye type island PTT sections

(4) influence of each technology controlling and process point of spinning to product

(5) the selection of winding process is to the control problem of circle lousiness.

With the Technical comparing of like product：

Table 15 and conventional sea island filament compare：

Table 14 and non-island PTT compare：

Table 16 is compared with blending island PTT：

Staining versus in the case of the same alkali number of table 17 and conventional sea island filament

	15%	20%	30%
				Conventional island	2.0	2.5	4.0
The present invention	3.0	4.0	4.5
				Increase rate	50%	60%	12.5%

Table 18 and conventional island alkali number technics comparing (technology preparation/Gl^-1)

	Alkaline agent	Refining agent	Bath raio	Temperature	Time
						Conventional island	20	2	20	110	60
The present invention	14	1	20	110	45

Table 19 and conventional island dyeing compare

It can see from above table, this easy dye island PTT long filament comprehensive performance produced by the invention.

The basic principles, main features and the advantages of the invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims

1. a kind of easily dye island PTT long filaments, it is characterised in that：Using COPET slices as sea component, with PTT slice and copolyamide Master batch is island component.

2. easy dye island PTT long filaments according to claim 1：It is characterized in that：In wherein described island component, described is total to Polyamide master batch is 2%~8% to the mass fraction of the PTT.

3. easy dye island PTT long filaments according to claim 2, which is characterized in that

Wherein described copolyamide carried out polycondensation by binary acid and diamine before this and polyamide is made, and then added in sulfonate, shape Into the copolyamide with sulfonic acid group；

Wherein polycondensation is made process and is, using p-phthalic acid and hexamethylene diamine as base stock, with phosphorous acid and triphenyl phosphate Make catalyst, add in a small amount of antioxidant 1010, carry out precondensation, when reaction proceed to 2 it is small when, from power of agitator It sees, system viscosity increased, and at this moment add in the double hydroxyl ethyl ester -5- sodium sulfonates (SIPE) of three monomer M-phthalic acids, reaction equation It is represented by：

。

4. a kind of preparation method of easy dye island PTT long filaments, includes the following steps：

Step A：Crystallization, pre-crystallized by crystallizing bed progress using COPET slices as sea component, crystallization temperature is 120~150 DEG C, For crystallization time in 19~22min, crystallinity is 38~40%；

Step B：It is dry, it dries by drying tower, is dried at being 130~145 DEG C in temperature；After 6~6.5h dryings Moisture content of the raw material be less than or equal to 18ppm；

Step C：Melting is melted after dry by reentering extra large feed screw extruder A certainly, in extra large feed screw extruder A 's；Screw extruder A is equipped with 6 heating zones, and the temperature in each area is at 250~275 DEG C；

Step D：It squeezes out, the COPET melts squeezed out by screw extruder A ensure the extrusion of screw rod through temperature sensor measurement Temperature is at 260~269 DEG C, while pressure sensor measures the extrusion pressure of melt, ensure Screw Extrusion pressure 9.0~ 10.0MPa；

Step E：Spinning manifold enters spinning manifold A by filter by melt pipe, is set outside the pipe melt road that melt flows through There is thermal-insulating body, thermal-insulating body is equipped with 6 flat-temperature zones, and flat-temperature zone has thermal insulation medium, and thermal insulation medium is biphenyl, passes through heating Cause the constant of everywhere temperature in babinet with biphenyl thermal insulation medium so that may insure entire each area and temperature exist 245~270 DEG C；

Step F：Metering reaches metering pump A, and the assembly chambeies of the extra large component of each filament spinning component are assigned to by isometric melt arm Interior, during spinning, extra large component meets the pressure of component in 90~110kg/2 2cm, and the backside pressure of spinneret is more than 50kg/cm；

Step 1：It is dry, using PTT slice and copolyamide master batch as island component, it is dried at being 130~145 DEG C in temperature； It is less than or equal to 18ppm by the dried moisture content of the raw material of 6~6.5h；

Step 2：Melting is melted after dry by reentering island feed screw extruder B certainly, in feed screw extruder B； Screw extruder B is equipped with 6 heating zones, and the temperature in each area is at 250~275 DEG C；

Step 1：It squeezes out, the PTT melts squeezed out by screw extruder B ensure the extrusion temperature of screw rod through temperature sensor measurement Degree is at 260~269 DEG C, while pressure sensor measures the extrusion pressure of melt, ensure Screw Extrusion pressure 9.5~ 10.5MPa, melt enter viscosity regulator through PTT melt pipes,

Step 2：Viscosity regulator, by adjusting residence time and temperature so that PTT raw materials in the melt pipe less than or equal to 2m Total residence time is 7~8min in road, and temperature is controlled at 254~270 DEG C, and it is molten to obtain the PTT that melt viscosity is 0.87~0.94 Body obtains the polymer for the best melt viscosity for being adapted to the application of PTT sea-island fibres；

Step 1：Spinning manifold enters spinning manifold B by filter by melt pipe, is set outside the pipe melt road that melt flows through There is thermal-insulating body, thermal-insulating body is equipped with 6 flat-temperature zones, and flat-temperature zone has thermal insulation medium, and thermal insulation medium is biphenyl, passes through heating Cause the constant of everywhere temperature in babinet with biphenyl thermal insulation medium so that may insure entire each area and temperature exist 265~270 DEG C；

Step 2：Metering reaches metering pump B, and the assembly chambeies of the extra large component of each filament spinning component are assigned to by isometric melt arm Interior, during spinning, extra large component meets the pressure of component in 90~110kg/2 2cm, and the backside pressure of spinneret is more than 50kg/cm；

(3) component：It is accurately counted by the COPET sea components raw material melt squeezed out after metering pump A accurate measurements and by metering pump B The PTT and copolyamide island component raw material melt squeezed out after amount is sent into manifold together, and the press-in of quantitative and even is assigned to spinning In composite spinning jete component in silk babinet, island component is evenly distributed in sea component by the distribution duct in component, by Same spinneret orifice sprays；Composite spinning jete component is made of spinneret, distribution plate, filter screen, filter sand and component body, melt In mechanical admixture and agglutination particle further filtered by the filter screen in component and filter sand, and in component further fully Mixing prevents the difference of temperature-viscosity, simultaneously because melt makes to melt at elevated pressures by the filter screen of high-drag and filter sand Body generates high shear rate, that is, improves the mobile performance of melt, and melt temperature is made instantaneously uniformly to improve, so as to ensure that Spray the uniform of melt stream quality；

(4) spinning under the speed of 800~1000m/min, carries out spinning；

(5) it cools down, under the wind speed of 0.3~0.7m/s, temperature passes through blowing apparatus and blowing fairing at 19~20 DEG C It is cooled down, cross air blasting wind pressure, temperature and the wind speed stabilization of fairing of being dried by control change vibration frequency so that stretch Long irregularity is controlled below 4%；

(7) drawing-off, then drawn through pre- network, the first draw-off godet, second spinning reel, in the situation drawing-off times of 3200m/min speeds Number is 2.3~2.5, is 2.0~2.2 in the situation drafting multiple of 4500m/min speeds；

(8) it shapes, is 14~16CN in T3 tension, is shaped by forming machine；

(9) grid, then by being wound after master network,

(10) POY precursor is wound into, is wound to form undrawn yarn on finished product up- coiler, 2300~3000m/ of speed of winding min；

(11) add bullet with high convergency FDY plying；

(12) it obtains using PTT and copolyamide as island component, COPET is the easy dye type island PTT long filaments of sea component, is had super easy Dyeing, the easy dye island PTT long filaments of highly shrinkable energy.

5. a kind of blowing fairing for the easy dye island PTT long filaments for cooling down the claims 1-3, include heat-insulating shield, into Air port, it is characterised in that：Rectification space, rectification layer are further included.

6. blowing fairing according to claim 5, it is characterised in that：

The height of the rectification layer is a, the thickness b of the rectification layer, plays the role of convolution and disturbance to rectification, so as to Its vibration frequency f can be changed,

Vibration frequency f meets relationship below with temperature change：

Wherein T is environment temperature；

L is length of the spinneret to tow fixed point；

F is the spinline tension of tow；

E is the elasticity modulus of tow；

M is the weight of the unit length of tow；

A is rectification layer height；

B is rectification layer thickness；

T-T₀Variable quantity for environment temperature.

7. blowing fairing according to claim 5, it is characterised in that：The fairing is additionally provided with bellows, wind Case positive bottom has metal mesh, a blinker, the second blinker, third blinker is respectively arranged on bellows inner wall, by bellows It is divided into and is followed successively by the first air compartment, the second air compartment, third air compartment, the 4th air compartment under by upper.

8. blowing fairing according to claim 7, it is characterised in that：Also distinguish between the first air compartment and air inlet It is provided with the first cowl flap, the second cowl flap, third venting piece, the 4th cowl flap, the 5th cowl flap；Have between each cowl flap There are gap, respectively first passage, second channel, third channel, fourth lane；Also correspondence is set respectively on the cowl flap It is equipped with the first ventilation opening, the second ventilation opening, third venting mouth, the 4th ventilation opening, the 5th ventilation opening；Cooling wind by ventilation opening and Channel enters air inlet and reaches rectification space.

9. blowing fairing according to claim 8, it is characterised in that：The blowing rectification is additionally provided with device voltage stabilizing Room, the pressure stabilizing chamber lower section are equipped with the first voltage stabilizing stratification of wind, the second voltage stabilizing stratification of wind, third voltage stabilizing stratification of wind, the 4th voltage stabilizing stratification of wind successively.