CN101812737A - Method for producing flame-retardant terylene BCF filaments and application of obtained flame-retardant terylene BCF filaments in carpet weaving - Google Patents
Method for producing flame-retardant terylene BCF filaments and application of obtained flame-retardant terylene BCF filaments in carpet weaving Download PDFInfo
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Abstract
The invention relates to a method for producing flame-retardant terylene BCF filaments and application of the obtained flame-retardant terylene BCF filaments in carpet weaving. The BCF filaments can be produced by using flame-retardant terylene chips as raw materials. The method for producing the flame-retardant terylene BCF filaments comprises the following steps of: (1) pre-crystallizing the flame-retardant terylene chips, drying the pre-crystallized product and extruding the melted pre-crystallized product by using a screw at the temperature of between 250 and 270 DEG C, wherein the flame-retardant terylene chips are PET flame-retardant copolymer chips with an inherent viscosity of between 0.64 and 1.0, a limited oxygen index of no less than 32 and a phosphorus content of no more than 1,400 PPM; (2) jetting the filaments; (3) cooling the jetted filaments; (4) oiling the cooled filaments and drawing the oiled filaments, wherein the drawing temperature is 50 to 180 DEG C, and the drawing rate is 3 to 5 times; (5) performing BCF bulking; and (6) molding the obtained product by cooling, outputting the molded product, entangling the output product to make a network and winding the network. Carpets made of the flame-retardant terylene BCF filaments of the invention reach Cf1 class specified in 'GB8624-2006 Classification for Burning Behavior of Building Materials and Products'.
Description
Technical field
The present invention relates to a kind of production method and the application of obtained flame-retardant terylene BCF filaments in carpet weaving of flame-retardant terylene BCF filaments.
Background technology
Along with improving constantly of living standards of the people, requirement to textiles is more and more higher, Application Areas also more and more widely, fire by the textiles initiation, cause great human casualty accident and economically the accident of massive losses occur repeatedly, so improve the anti-flammability of textiles, to guaranteeing the property life security, reducing fire incident has important effect.Application and standardization that fire-retardant product is interior in public places are the problem that the people in the industry pays close attention to all the time.The application in public places of qualified fire-retardant product can reduce its fire load, reduces disaster hidden-trouble, improves the security against fire level.Domestic many R﹠D institutions and institution of higher learning have done number of research projects in this respect, and relevant enterprise has also produced fire-retardant product numerous in variety.Industries such as fire-fighting, weaving, plastics, building materials have successively been formulated over one hundred about fire-retardant national standard.Application and Development flame-retarded technology and goods also are one of western developed country technical measures of improving the structural fire protection safe condition comprise the public place, and the UL of International Organization for Standardization, European standard tissue (EN) and the U.S. and NFPA etc. have issued many standards that relate to the fire resistance test and estimate.
Polyester (PET) fiber has purposes very widely with excellent performance such as its high strength, dimensionally stable, resistance to chemical attack aspect clothes, carpet and the drapery.But polyester fiber belongs to the meltbility combustible fibre, and polyester slice is carried out flame treatment, reduces the danger of polyester textile in fire, has become the research direction of an extensive concern.
When the common PET fiber runs into high temperature heat source or burning things which may cause a fire disaster, fiber is molten state and cracking reaction takes place, produce imflammable gas, when imflammable gas can't leave fast and reaches finite concentration, can produce burning after but the fiber surface temperature reaches burning-point simultaneously, airborne oxygen helps the burning of cracking reaction thing, discharges higher heat energy because of burning, makes burning more very.And the fire-retardant principle that adopts fire resistance fibre is exactly to run into thermal source and when producing thermal decomposition at fabric, the fire retardant that contains in the fiber can decompose the generation non-flammable gases, the free radical that will cause burning becomes inactive free radical, be converted into non-flammable gases, reduce the generation of imflammable gas, suppress flammable cracking reaction, make the blanket flooring produce fusion, form drop and break away from burning things which may cause a fire disaster, thereby reach fire-retardant purpose.
At present, the durable flame-retardant processing of ornament materials such as carpet can be adopted three approach: the one, industrial chemicals and the fibrous raw material master batch with fire resistance required to mix in proportion, spinning then in adding fibrous raw material to need not the fire resistance that following process promptly has after weaving; The 2nd, after itself not possessing the fiber weaving of flame-retarding characteristic, do not carry out fire-retardant processing back arrangement, processing method commonly used is high-temperature pressure dyeing, fire-retardantly bakes the typing finishing method with bathing one-step method or padding; The 3rd, industrial chemicals and the fibrous raw material with fire resistance made fire-retardant slice by copolyreaction, spinning again, be woven into fabric.The fabric that this kind method is made has the nonvolatil characteristics of flame retardant effect.
But, by copolyreaction the fire-retardant slice spinnability that fire-retardant raw material introducing polymer segment obtains is reduced greatly, be difficult to obtain continuous, stable, stretchable long filament.
The BCF long filament claims bulked continuous filament (bulked continuous filament yarn) again, and the multifilament after stretching is carried out bulking, handles through typing, fix its bulk and curling effect, thereby the space increases between the fiber, makes the yarn body bulk.The BCF long filament is mainly used in carpet weaving.The production technology of existing BCF long filament is an one-step method, and key step comprises spray silk, cools off, oils, stretching, BCF bulking, cooling and shaping, output, entanglement network, coiling.This one-step method production process is had relatively high expectations, and has further increased the difficulty that the flame-resistant terylene section is applied to produce the BCF long filament.
Summary of the invention
The invention provides a kind of production method of flame-retardant terylene BCF filaments, can be raw material with the flame-resistant terylene section, produces the BCF long filament.
The present invention also provides the application of aforementioned production method obtained flame-retardant terylene BCF filaments in carpet weaving.
The production method of described flame-retardant terylene BCF filaments may further comprise the steps:
(1) cut into slices pre-crystallization, dry back of flame-resistant terylene melt extrudes through screw rod under 250-270 ℃, and described flame-resistant terylene section is cut into slices for the PET fire-resistant copolyesters, and inherent viscosity is 0.64-1.0, and limited oxygen index is not less than 32, and phosphorus content is not more than 1400PPM;
(2) spray silk;
(3) cooling;
(4) oil, drawing-off, wherein drawing temperature is 50-180 ℃; Draw ratio is 3-5 times;
(5) BCF bulking;
(6) cooling and shaping, output, entanglement network, coiling.
Above-mentioned PET fire-resistant copolyesters section is meant in the PET polymerization process, adds the industrial chemicals with fire resistance and carries out the fire-retardant slice that copolyreaction makes.Preferred limited oxygen index is 32-36, more preferably 36.Described PET fire-resistant copolyesters section is commercially available.
As improvement of the present invention, also add Masterbatch before the flame-resistant terylene section melt extrudes and mix, moisture is lower than 200ppm in the described Masterbatch.In order to reach above-mentioned moisture, described Masterbatch adds before the flame-resistant terylene section, adopts conventional method to carry out drying, and concrete steps are: dry 3-4h down at 120 ℃.The consumption of Masterbatch requires to determine according to reality.
In the step (1), the pre-crystallization of flame-resistant terylene section, the dry common process that adopts, preferably section is quantitatively transferred to and under 50-80 ℃, carries out pre-crystallization in the crystallizer, the section of advantages of good crystallization 135-150 ℃ dry 2-4 hour down, make that moisture is lower than 50ppm in the section.
Melt is sent into spinnerets spray silk after measuring pump measures, pressurizes, according to the denier count as received of carpet customer requirement, set the rotating speed of measuring pump by calculating, thereby controls the fiber number of yarn.The rotating speed of general measuring pump is 10-40 rev/min.
As preferred version, adopting wind speed in the step (3) is that 0.1～1.5 meter per second, temperature are the cooling of drying of cooling air about 15-25 ℃.Wind speed is preferably 0.1～1 meter per second.The general lateral blowing that adopts.
The rate of oiling is 1.0%-1.2% in the step (4), and preferably the rate of oiling is 1.2%.The process conditions of drawing-off are: first drawing roller: speed 650-685 rice/minute, temperature: 75-85 ℃; Second drawing roller: speed 695-715 rice/minute, temperature: 95-105 ℃; The dominant draft roller: speed 2420-2820 rice/minute, temperature: 150-160 ℃.By controlling different drawing roller speed and temperature the molecular structure in the tow is changed along drawing-off direction axially-aligned, make fiber obtain fracture strength and the percentage elongation that needs.
Middle pressure 7-8bar, temperature 155-165 ℃ of step (5); Suggestion adopts the up-to-date integral type high-performance of Switzerland SWISSTEX puffing apparatus to carry out; During cooling and shaping, the drum cooler rotating speed is 10-60 rev/min, is preferably 20-30 rev/min in the step (6); During output the first outlet roller speed be 2200-2500 rice/minute, the second outlet roller speed be 2225-2525 rice/minute, during entanglement network, pressure is 4.0-5.0bar, winding speed be 2200-2500 rice/minute.
The fiber number of obtained flame-retardant terylene BCF filaments is the 1200-3000 dtex, and filament number is 5-20dpf, and crimp percent is 20%-35%, fracture strength is 2.5-3.5cN/dtex, elongation at break is 38%-40%, boiling water shrinkage 2.0-2.5%, nexus 20-25/rice.More preferably, the fiber number of obtained flame-retardant terylene BCF filaments is the 1400-2500 dtex, and filament number is 15-18dpf, and crimp percent is 30%-35%.
The application of described production method obtained flame-retardant terylene BCF filaments in carpet weaving.Carpet weaving adopts common process, as: interweave by end warp and one circulation of weft yarn one latitude, its medium staple is through adopting above-mentioned flame-retardant terylene BCF yarn.Technology can be more specifically: interweave by end warp and one circulation of weft yarn one latitude, wherein end warp: the front axle full Polyester Yarns of yarn specification 20S/5, the rear axle full Polyester Yarns of yarn specification 20S/4; Weft yarn: 5.2S/2 jute; The suede warp: with above-mentioned flame-retardant terylene BCF yarn, 10.5 millimeters of pile height.
The present invention has mainly studied flame-retardant terylene BCF filaments in the melt spinning production process, the selecting for use of flame-resistant terylene section, raw material drying, spinning temperature, stretching condition and be out of shape the influence that expanded process conditions are produced fire-retardant BCF long filament, by optimizing technology, obtain continuous, stable, stretchable long filament and be used for the BCF bulking, obtained flame-retardant BCF long filament good flame retardation effect, can satisfy the woven requirement of carpet (as deformation rate, fiber number, fracture strength, elongation at break, boiling water shrinkage, nexus etc.).Wherein the selecting for use of flame-resistant terylene section, spinning temperature and stretching condition are the most key.When the flame-resistant terylene section of selecting for use reaches 36 PET section for limited oxygen index, the carpet of being made by obtained flame-retardant terylene BCF filaments of the present invention detects the Cf1 level that meets in " GB8624-2006 construction material and the classification of goods combustibility " through national fire-proof construction material quality supervision and test centers (NFTC), be unique product by this test in the present domestic flame-resistant terylene yarn.
The specific embodiment
Following examples adopt the up-to-date integral type high-performance of Switzerland SWISSTEX puffing apparatus, make fiber form three-dimensional crimp.
Embodiment 1:
Raw material: fire-retardant PET section, Sichuan Dongcai Technology Group Co., Ltd produces, trade mark v0, inherent viscosity: 0.73, limited oxygen index is 36, phosphorus (P) content is 1400PPM.
Masterbatch: Changzhou Longma macromolecule technology Co., Ltd, the trade mark: TB58 addition: 1.5%.
Spinnerets: 80 holes/trilobal cross, leaf is wide 0.3 millimeter, leaf is grown 0.8 millimeter.
The production method of flame-retardant terylene BCF filaments is as follows:
The dry oven dry of Masterbatch: pigment particles for terylene was dried by the fire 3 hours under 120 ℃ of temperature, make that moisture content is lower than about 200ppm in the Masterbatch;
Flame-resistant terylene section crystallization, drying: section is quantitatively transferred to carries out pre-crystallization (70 ℃) in the crystallizer, the section of advantages of good crystallization 145 ℃ dry 2.5 hours down;
In flame-resistant terylene section, add quality and be the Masterbatch of flame-resistant terylene chipping qualities 1.5% and send into the screw extruder fusion mixed, its melt directly enters spinning manifold after extruder is extruded, wherein, each distinguish temperature be controlled to be (℃): screw rod: 255,260,260,265,265,265,265,260, filter: 260, condition of spinning manifold temperature: 260.
Spray silk: measuring pump rotating speed: 10.0 rev/mins;
Cooling: lateral blowing temperature: 20 ℃, speed: 0.3 meter per second;
Oil, drawing-off: rate oils: 1.2%, the trade mark: German Sima 2711; Drawing-off: first drawing roller: 653 meters/minute of speed, temperature: 85 ℃, second drawing roller: 695 meters/minute of speed, temperature: 105 ℃, dominant draft roller: 2420 meters/minute of speed, temperature: 150 ℃;
BCF bulking: 155 ℃ of pressure 7.5bar, temperature;
Cooling and shaping, output, entanglement network, coiling: 20 rev/mins of drum cooler speed, first outlet roller: 2200 meters/minute of speed, second outlet roller: 2225 meters/minute of speed; Entanglement network pressure 4.0bar, 2200 meters/minute of winding speeds, 250 seconds coiling time.
Obtained flame-retardant terylene BCF filaments fiber number 1400 dtexs/80F, hot rolling curvature 30.5%, fracture strength 3.1cN/dtex, elongation at break 39.3%, boiling water shrinkage 2.5%, 25/meter of nexus.
Obtained flame-retardant terylene BCF filaments adopts the two arrow shaft carpet looms of VDW ADR92 Wilden to weave carpet, and through filling density: 320 through * 470 latitudes; Weaving method is: interweave by end warp and one circulation of weft yarn one latitude, wherein end warp: the front axle full Polyester Yarns of yarn specification 20S/5, the rear axle full Polyester Yarns of yarn specification 20S/4; Weft yarn: 5.2S/2 jute; The suede warp: with above-mentioned flame-retardant terylene BCF yarn, 10.5 millimeters of pile height.The carpet of making detects the Cf1 level that meets in " GB8624-2006 construction material and the classification of goods combustibility " through national fire-proof construction material quality supervision and test centers (NFTC), the result is as shown in table 1.
Table 1
Embodiment 2:
Raw material: fire-retardant PET sheet Sichuan Dongcai Technology Group Co., Ltd produces, trade mark v0, and intrinsic viscosity: 0.73, limited oxygen index is 36, phosphorus (P) content is 1400PPM.
Masterbatch: Changzhou Longma macromolecule technology Co., Ltd produces, the trade mark: TY218, addition: 2.5%.
Spinnerets: 150 holes/trilobal cross, leaf is wide 0.3 millimeter, leaf is grown 0.8 millimeter.
The production method of flame-retardant terylene BCF filaments is as follows:
The dry oven dry of Masterbatch: pigment particles for terylene was dried by the fire 3 hours under 120 ℃ of temperature, make that moisture content is lower than about 200ppm in the Masterbatch;
Flame-resistant terylene section crystallization, drying: section is quantitatively transferred to carries out pre-crystallization (70 ℃) in the crystallizer, the section of advantages of good crystallization 140 ℃ dry 3 hours down;
In flame-resistant terylene section, add quality and be the Masterbatch of flame-resistant terylene chipping qualities 2.5% and send into the screw extruder fusion mixed, its melt directly enters spinning manifold after extruder is extruded, wherein, each distinguish temperature be controlled to be (℃): screw rod: 255,260,260,265,265,270,270,265, filter: 265, condition of spinning manifold temperature: 265.
Spray silk: measuring pump rotating speed: 19.2 rev/mins;
Cooling: lateral blowing temperature: 18 ℃, speed: 0.75 meter per second;
Oil, drawing-off: rate oils: 1.2%, the trade mark: German Sima 2711; Drawing-off: first drawing roller: 683 meters/minute of speed, temperature: 75 ℃, second drawing roller: 715 meters/minute of speed, temperature: 95 ℃, dominant draft roller: 2820 meters/minute of speed, temperature: 160 ℃;
BCF bulking: 165 ℃ of pressure 7.5bar, temperature
Cooling and shaping, output, entanglement network, coiling: 30 rev/mins of drum cooler speed, first outlet roller: 2500 meters/minute of speed, second outlet roller: 2525 meters/minute of speed; Entanglement network pressure 5.0bar, 2500 meters/minute of winding speeds, 250 seconds coiling time.
Obtained flame-retardant terylene BCF filaments fiber number 2500 dtexs/150F, hot rolling curvature 31.1%, fracture strength 2.6cN/dtex, elongation at break 38.2%, boiling water shrinkage 2.3%, 22/meter of nexus.
Obtained flame-retardant terylene BCF filaments adopts the two arrow shaft carpet looms of VDW ADR92 Wilden to weave carpet, and through filling density: 320 through * 470 latitudes; Weaving method is: interweave by end warp and one circulation of weft yarn one latitude, wherein end warp: the front axle full Polyester Yarns of yarn specification 20S/5, the rear axle full Polyester Yarns of yarn specification 20S/4; Weft yarn: 5.2S/2 jute; The suede warp: with above-mentioned flame-retardant terylene BCF yarn, 10.5 millimeters of pile height.The carpet of making meets the Cf1 level in " GB8624-2006 construction material and the classification of goods combustibility ", and the result is as shown in table 2.
Table 2
Claims (10)
1. the production method of a flame-retardant terylene BCF filaments is characterized in that may further comprise the steps:
(1) cut into slices pre-crystallization, dry back of flame-resistant terylene melt extrudes through screw rod under 250-270 ℃, and described flame-resistant terylene section is cut into slices for the PET fire-resistant copolyesters, and inherent viscosity is 0.64-1.0, and limited oxygen index is not less than 32, and phosphorus content is not more than 1400PPM;
(2) spray silk;
(3) cooling;
(4) oil, drawing-off, wherein drawing temperature is 50-180 ℃; Draw ratio is 3-5;
(5) BCF bulking;
(6) cooling and shaping, output, entanglement network, coiling.
2. the production method of flame-retardant terylene BCF filaments as claimed in claim 1 is characterized in that, also adds Masterbatch before the flame-resistant terylene section melt extrudes and mixes, and moisture is lower than 200ppm in the described Masterbatch.
3. the production method of flame-retardant terylene BCF filaments as claimed in claim 1 or 2 is characterized in that, the rate of oiling is 1.0%-1.2% in the step (4).
4. the production method of flame-retardant terylene BCF filaments as claimed in claim 1 or 2 is characterized in that, adopting wind speed in the step (3) is that 0.1～1.5 meter per second, temperature are the cooling of drying of cooling air about 15-25 ℃.
5. the production method of flame-retardant terylene BCF filaments as claimed in claim 1 or 2 is characterized in that, the process conditions of drawing-off are in the step (4): first drawing roller: speed 650-685 rice/minute, temperature: 75-85 ℃; Second drawing roller: speed 695-715 rice/minute, temperature: 95-105 ℃; The dominant draft roller: speed 2420-2820 rice/minute, temperature: 150-160 ℃.
6. the production method of flame-retardant terylene BCF filaments as claimed in claim 1 or 2 is characterized in that, middle pressure 7-8bar, temperature 155-165 ℃ of step (5); During cooling and shaping, the drum cooler rotating speed is 10-60 rev/min in the step (6); During output the first outlet roller speed be 2200-2500 rice/minute, the second outlet roller speed be 2225-2525 rice/minute, during entanglement network, pressure is 4.0-5.0bar, winding speed be 2200-2500 rice/minute.
7. the production method of flame-retardant terylene BCF filaments as claimed in claim 6 is characterized in that, the drum cooler rotating speed is 20-30 rev/min in the step (6).
8. the production method of flame-retardant terylene BCF filaments as claimed in claim 1 or 2 is characterized in that, the fiber number of described flame-retardant terylene BCF filaments is the 1200-3000 dtex, and filament number is 5-20dpf, and crimp percent is 20%-35%.
9. the production method of flame-retardant terylene BCF filaments as claimed in claim 8 is characterized in that, the fiber number of described flame-retardant terylene BCF filaments is the 1400-2500 dtex, and filament number is 15-18dpf.
10. each described production method obtained flame-retardant terylene BCF filaments application in carpet weaving among the claim 1-9.
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| CN102628199A (en) * | 2012-04-13 | 2012-08-08 | 威海德瑞合成纤维有限公司 | Production method for compound color bulked filament |
| CN103255499A (en) * | 2013-05-07 | 2013-08-21 | 盛虹集团有限公司 | Regenerated inflaming retarding and molten drop resisting polyester filament and preparation method thereof |
| CN104120501A (en) * | 2014-06-30 | 2014-10-29 | 江苏开利地毯股份有限公司 | Production method of negative ion BCF fiber and application of fiber to carpets |
| CN108642582A (en) * | 2018-04-25 | 2018-10-12 | 山东齐鲁化纺有限公司 | A kind of 1.56dtex × 38mm flame retardant polyester staple fibres trial production technique |
| CN109137180A (en) * | 2018-10-22 | 2019-01-04 | 浙江四通新材料科技股份有限公司 | A kind of imitative wool carpet yarn preparation method of terylene twisting sizing |
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| CN110004553A (en) * | 2019-04-09 | 2019-07-12 | 昆山怡家居纺织有限公司 | The method of varicosity fire resistance fibre of the preparation without fire retardant in FDY equipment |
| CN110004553B (en) * | 2019-04-09 | 2024-04-09 | 昆山怡家居纺织有限公司 | Method for preparing flame retardant-free bulked flame-retardant fiber on FDY equipment |
| CN110512328A (en) * | 2019-09-01 | 2019-11-29 | 安徽同光邦飞生物科技有限公司 | A kind of compound BCF buiky yarn and preparation method thereof |
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| CN101812737B (en) | 2012-12-05 |
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