CN111218739A - Ultra-long fiber spinnable yarn for thermal protection material and processing method thereof - Google Patents
Ultra-long fiber spinnable yarn for thermal protection material and processing method thereof Download PDFInfo
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- CN111218739A CN111218739A CN202010133744.6A CN202010133744A CN111218739A CN 111218739 A CN111218739 A CN 111218739A CN 202010133744 A CN202010133744 A CN 202010133744A CN 111218739 A CN111218739 A CN 111218739A
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
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Abstract
The invention relates to an ultra-long fiber spinnable yarn for a thermal protection material and a processing method thereof. The spinnable yarn has the thermal protection material extra-long fiber with the length of 102-120 mm. The processing method of the super-long fiber spinnable yarn for the thermal protection material comprises the following steps: mechanically drafting and breaking the required high-new-performance thermal protection filament bundle to prepare extra-long fiber wool tops of 102-120 mm; drawing; mixing the broken wool tops by drafting and forming quantitative wool tops required by a roving process, wherein the roving process comprises the following steps: spinning the wool tops with required quantity into roving through a roving machine; spinning the rough yarn into spun yarn with required specification by a spinning machine; and (5) steaming and shaping the spun yarn by a yarn steaming machine. Aiming at the comprehensive advantages that the damage of the high-new-performance thermal protection material in the spinning processing process is smaller, the fiber length is extra long (more than 100% longer than medium-long fiber, and the fiber end is reduced by more than 50%), and the fiber after drawing and breaking is thinner (more than 7% than the number of the traditional cotton spinning yarns with the same specification), the strength of the prepared yarns with the same specification can be improved by more than 20%, the neps and hairiness are fewer, the evenness is better, the working procedure is simplified, the process flow is short, the yield is high, the labor productivity is high, and the like.
Description
Technical Field
The invention relates to a pure spinning or blended yarn or thread and a processing method thereof, in particular to an ultra-long fiber spinnable yarn for a thermal protection material and a processing method thereof.
Background
The high-new performance thermal protection material mainly comprises aramid fiber, flame-retardant acrylic, carbon fiber, polyimide, flame-retardant viscose, PBO, PBI, PPS and the like. The material has the characteristics of stable high molecular weight, high temperature resistance, flame retardance, high modulus, high strength and the like, and is widely applied to the field of individual safety protection.
The process flow for preparing the spinnable yarn by adopting the materials in the traditional process is as follows: the method comprises the following steps of cutting fiber, blowing, carding (wool top), drawing, roving, spinning, shaping and producing. That is, short (38mm) and medium (51mm) fibers obtained by cutting the material filament bundle are subjected to blowing and carding processes to be made into tops, and then spun.
The blowing and carding processing processes in the spinning process of the traditional process can cause great damage to fibers, the length of the fibers is short, and the quality of spun yarns cannot obtain high-quality yarns. Some varieties bring great difficulty to subsequent weaving, dyeing and finishing and have poor quality so as not to meet the market demand. For example: the pure and blended yarns spun by the carbon fibers and the short fibers adopted at present have poor strength and poor weavability, and the produced fabrics and garments have a large amount of slag falling, thus seriously affecting the subsequent production and processing quality, polluting the environment and being healthy.
Disclosure of Invention
The invention aims to provide an ultra-long fiber spinnable yarn for a thermal protection material and a processing method thereof, which solve the defects of the traditional method and a product prepared by the traditional method, and aims at the comprehensive advantages that the damage of the high and new performance thermal protection material in the spinning processing process is smaller, the fiber length is ultra-long (more than 100% longer than medium-long fiber and more than 50% of fiber end is reduced), the fiber subjected to drawing fracture is thin (more than 7% of the number of the yarn in the same specification compared with the traditional cotton spinning), the strength of the prepared yarn in the same specification can be improved by more than 20%, neps and hairiness are fewer, the yarn evenness is better, the working procedure is simplified, the process flow is short, the yield is high, the labor productivity is high, and the like.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an extra-long fiber spinnable yarn for thermal protective materials, characterized in that: the spinnable yarn has the thermal protection material extra-long fiber with the length of 102-120 mm.
A method for processing the super-long fiber spinnable yarn for the thermal protection material is characterized in that: the method comprises the following process steps:
firstly, mechanically drafting and breaking a required high-new-performance thermal protection filament bundle to prepare an extra-long fiber wool top of 102-120 mm;
secondly, mixing the broken wool tops by drafting to obtain quantitative wool tops required by a roving process;
thirdly, spinning the wool tops with required quantity into roving through a roving machine;
fourthly, spinning the rough yarn into spun yarn with required specification by a spinning machine;
and fifthly, steaming and shaping the spun yarn by a yarn steaming machine.
The processing method of the ultra-long fiber spinnable yarn for the thermal protection material is characterized in that:
when the spinnable yarn is pure spinning yarn, the drawing process of the second step comprises head drawing and end drawing.
The processing method of the ultra-long fiber spinnable yarn for the thermal protection material is characterized in that:
the drawing process parameters are as follows: the head doubling top has the fixed weight of 20-40g/5m, the drafting multiple of 5-10 times, the roller gauge mm140 x 220 and the vehicle speed of 180-240 m/min; the final drawing multiple is 5-10 times, the roller gauge is mm140 x 220, and the vehicle speed is 180-240 m/min.
The processing method of the ultra-long fiber spinnable yarn for the thermal protection material is characterized in that:
when the spinnable yarn is blended spun yarn, the drawing process of the second step comprises pre-drawing, head drawing and end drawing;
the pre-drawing is to adjust the quantitative of the high and new performance thermal protection drafting broken long fiber wool which needs to be blended according to the pre-drawing.
The processing method of the ultra-long fiber spinnable yarn for the thermal protection material is characterized in that:
the parameters of the pre-drawing process are as follows: the weight of the wool tops is 20-40g/5m, the number of the wool tops is 5-10, the drafting multiple is 5-10 times, the roller gauge is 140 mm/220, and the vehicle speed is 180-240 m/min;
the drawing process parameters are as follows: the head doubling top has the fixed weight of 20-40g/5m, the drafting multiple of 5-10 times, the roller gauge mm140 x 220 and the vehicle speed of 180-240 m/min; the final drawing multiple is 5-10 times, the roller gauge is mm140 x 220, and the vehicle speed is 180-240 m/min.
The processing method of the ultra-long fiber spinnable yarn for the thermal protection material is characterized in that: the first step of break drafting has three main drafting areas which are respectively: the first drafting fracture zone has the distance of 200-500mm, the second drafting fracture zone has the distance of 600-1500mm, the third drafting fracture zone has the distance of 100-130mm, the vehicle speed is 30-80m/min, and the fixed weight of the wool top is 6.5 g/m.
The processing method of the ultra-long fiber spinnable yarn for the thermal protection material is characterized in that: the roving process parameters in the third step are as follows: the twist coefficient is 26-32, the drafting multiple is 6-10, the roller gauge is mm130 x 220, the vehicle speed is 1800-240m/min, and the rotating speed of the front roller is 280-340 r/min.
The processing method of the ultra-long fiber spinnable yarn for the thermal protection material is characterized in that: the spun yarn process parameters in the fourth step are as follows: the yarn count is 18.45tex, the draft multiple is 26-34 times, the back draft multiple is 1.00-1.18, the twist factor is 160-300, the roller gauge is mm130 x 220, and the rotating speed of the front roller is 180-280 r/min.
The processing method of the ultra-long fiber spinnable yarn for the thermal protection material is characterized in that: the yarn steaming and shaping process parameters in the fifth step are as follows: circulating 1, at the temperature of 70-130 ℃, under the negative pressure of 180-240mb for 6-10 min; and (2) circulating at 90-130 ℃ under a negative pressure of 200-280mb for 20-60 min.
The invention has the advantages that:
1. the drafting, breaking, sliver making and drawing processes different from the traditional processes are adopted for the high-new-performance thermal protection material, the damage of blowing and cotton carding of the sliver making process in the traditional processes to the high-new-performance thermal protection material is greatly reduced, long fibers which are 2-3 times longer than the short and medium long fibers in the traditional cotton spinning can be obtained, the fiber ends are reduced by more than 50%, the number of fiber elements in the yarns of the same specification is improved by more than 7%, the strength of the manufactured yarns of the same specification can be improved by more than 20%, and the appearance quality of hairiness, neps, evenness and the like is also greatly improved.
2. The breaking strength and the tearing strength of the fabric and the clothes made of the yarns prepared by the method can be improved by more than 20 percent, and the method has more reliable guarantee for high-risk operators making the clothes made of the yarns spun by the method to operate in severe environment.
Drawings
FIG. 1 is a schematic drawing of the structure of the spinnable yarn of the present invention (pure spinning).
Fig. 2 is a schematic view of the structure of the spinnable yarn (blend spinning) in the present invention.
Detailed Description
As shown in figures 1 and 2, the invention discloses an ultra-long fiber spinnable yarn for a thermal protection material, which comprises the ultra-long fiber of the thermal protection material with the length of 102-120 mm. The ultra-long fiber of the thermal protection material adopts high and new performance thermal protection tows (crimped or uncrimped aramid fiber, flame-retardant acrylic fiber, carbon fiber, polyimide, flame-retardant viscose, PBO, PB I, PPS and the like) with the moisture regain of 7-9% and the oil content of 0.2-0.5%, and is spun into yarn.
Wherein, fig. 1 represents a pure spinning product using a high-new-performance thermal protection tow material (1 represents a yarn body, and 2 represents a thermal protection material extra-long fiber of a material). Fig. 2 represents a blended product using two (two lines of solid line and dotted line) high-novelty thermal protective tow materials (1 represents the yarn body, solid line 2 represents the thermal protective material extra long fiber of one material, dotted line 3 represents the thermal protective material extra long fiber of the other material). Of course, a blended product formed of two or more materials may also be used. Various material fibers in the product are required to meet the requirement of forming the thermal protection material ultra-long fiber with the length of 102-120 mm. Fibers of a single or several materials are formed into an entangled, twisted yarn structure by a process.
The processing method of the super-long fiber spinnable yarn for the thermal protection material is characterized in that: the method comprises the following process steps:
firstly, mechanically drafting and breaking the needed high-new-performance thermal protection filament bundle to prepare an extra-long fiber wool top of 102-120 mm.
In the first step, the oiling rate is controlled in different proportions according to different materials and the principle of selecting a suitable oil agent (such as an antistatic carding agent T-8112 of Tianjin engineering large textile auxiliary agent Co., Ltd, an antistatic finishing agent Goon881 of Jiahong organic silicon science Co., Ltd, Dongguan city or Yakoufeng SF of Shanghai Yayun textile chemical industry Co., Ltd) is adopted, so that the drawing, breaking and slivering processes are facilitated, and the phenomenon that static electricity is generated to influence the slivering quality is avoided. The long tow drafting and breaking machine can adopt JSF 1316 tow drafting and breaking machine of Hainan ocean machinery technology Limited company or tow drafting and breaking machines of GYFA1306, GYFA318, GYFA319 and the like of Hainan ocean machinery technology Limited company.
The breaking draft zone has three main draft zones, and different draft multiplying powers and draft spacing distances are adopted for the three main draft zones so as to reduce the proportion of ultra-short and ultra-long fibers. The first drafting zone is a pre-drafting zone, preferably adopting the principle of small gauge and low drafting multiplying factor to ensure that the filament bundle obtains sufficient stretching stress to be uniform so as to facilitate the filament bundle to be broken into strips after drafting, and preferably adopting the principle that the gauge is 4 times larger than the required fiber length and the drafting multiplying factor is 1.0-2.0. The second drafting zone is a main drafting zone and is a key zone for determining the breaking rate, the large-spacing distance and the high drafting multiplying factor are used for reducing the proportion of ultra-short and ultra-long fibers, the required fiber length is 10-12 times of the spacing distance, the 4-8 times of the drafting multiplying factor is more appropriate, the third drafting zone is mainly used for controlling the ultra-long fibers, the ultra-long fibers and the small fibers can be effectively controlled within the required drafting breaking fiber length range, and the sliver forming quality is ensured.
The second step, drawing process, pure spinning and blended spinning process are different. In the second step, broken wool tops are smooth and have no crimp due to drawing, and the fiber length is very long. The pre-drawing in the blending process is based on the principle of light quantitative, multiple parallel and less parallel processes, so that the uniform mixing in the drawing process is facilitated, the quantitative deviation is small, the fiber damage is less, and the broken strips are avoided. The pure spinning and the blending are suitable.
And thirdly, spinning the wool tops with required quantitative into roving through a roving machine.
And fourthly, spinning the rough yarn into spun yarn with required specification by a spinning machine.
And fifthly, steaming and shaping the spun yarn by a yarn steaming machine.
By adopting the processing technology, the high-new-performance thermal protection material can be made into yarn with better quality, especially the yarn with better quality is subjected to drafting and breaking in the first step and sliver mixing in the second step, so that the damage to the internal fiber of the spun yarn with the same specification is greatly reduced, the fiber length is longer, the fiber end is greatly reduced, the fiber end is uniformly mixed, the yarn structure is more excellent, and the comprehensive quality of pure spinning and blended yarn is higher.
When the spinnable yarn is pure spinning yarn, the drawing process of the second step comprises head drawing and end drawing.
The drawing process parameters are as follows: the head doubling top has the fixed weight of 20-40g/5m, the drafting multiple of 5-10 times, the roller gauge mm140 x 220 and the vehicle speed of 180-240 m/min; the final drawing multiple is 5-10 times, the roller gauge is mm140 x 220, and the vehicle speed is 180-240 m/min.
When the spinnable yarn is blended spun yarn, the drawing process of the second step comprises pre-drawing, head drawing and end drawing;
the pre-drawing is to adjust the quantitative of the high and new performance thermal protection drafting broken long fiber wool which needs to be blended according to the pre-drawing.
The parameters of the pre-drawing process are as follows: the weight of the wool tops is 20-40g/5m, the number of the wool tops is 5-10, the drafting multiple is 5-10 times, the roller gauge is 140 mm/220, and the vehicle speed is 180-240 m/min;
the drawing process parameters are as follows: the head doubling top has the fixed weight of 20-40g/5m, the drafting multiple of 5-10 times, the roller gauge mm140 x 220 and the vehicle speed of 180-240 m/min; the final drawing multiple is 5-10 times, the roller gauge is mm140 x 220, and the vehicle speed is 180-240 m/min.
The blended yarn specifications of the invention are as follows:
1. the yarn count range is 58.31tex/1 or 58.31 tex/2-5.831 tex/1 or 5.831tex/2.
2. The proportion range of the blended yarn is as follows:
(1) blended yarn 1
25-75% of aramid fiber and 75-25% of flame-retardant viscose.
(2) Blended yarn 2
25 to 75 percent of aramid fiber and 75 to 25 percent of flame-retardant acrylic fiber.
(3) Blended yarn 3
30-70% of flame-retardant acrylic and 70-30% of viscose.
(4) Blended yarn 4
40 to 60 percent of carbon fiber and 60 to 40 percent of flame-retardant adhesive
The blending modes are all that the ultra-long fiber wool tops are formed by respectively stretching and breaking different material tows, and then the wool tops are mixed and spun in the drawing process according to the required blending proportion to form the required blended yarns.
The first step of break drafting has three main drafting areas which are respectively: the first drafting fracture zone has the distance of 200-500mm, the second drafting fracture zone has the distance of 600-1500mm, the third drafting fracture zone has the distance of 100-130mm, the vehicle speed is 30-80m/min, and the fixed weight of the wool top is 6.5 g/m.
The roving process parameters in the third step are as follows: the twist coefficient is 26-32, the drafting multiple is 6-10, the roller gauge is mm130 x 220, the vehicle speed is 1800-240m/min, and the rotating speed of the front roller is 280-340 r/min.
The spun yarn process parameters in the fourth step are as follows: the yarn count is 18.45tex, the draft multiple is 26-34 times, the back draft multiple is 1.00-1.18, the twist factor is 160-300, the roller gauge is mm130 x 220, and the rotating speed of the front roller is 180-280 r/min.
The invention will be further described with reference to specific examples:
example 1
The main process steps for spinning 18.45tex 100% aramid yarn are as follows:
(1) process flow
Filament bundle drafting and breaking machine-BCM 102 drawing frame (head and body combination) -BCM102 drawing frame (tail and body combination) -FB477 roving frame-B519 spinning frame-yarn steaming machine-self doffing machine-package
(2) Process parameters
a. Drawing, breaking and sliver making process: the specification of the aramid fiber filament bundle is 80-100g/m, the distance of the first drafting zone is 500mm, and the drafting multiple is 1.07. The second drafting zone has a distance of 147mm and a drafting multiple of 6-7.5. The third drafting zone has a gauge distance of 110-130mm and a drafting multiple (multiple) of 6-7.5. The vehicle speed is 30 m/min. The weight of the produced sliver is 6.5g/m, and the main length of the wool top fiber is 120 mm.
b. Drawing process:
and (3) head combination: the quantitative determination of wool tops is 24.0g/5m, the combined number is 6, the drafting multiple is 8.13, the roller gauge is mm140 x 155, and the vehicle speed is 210 m/min.
And (3) performing final combination: the quantitative determination of wool tops is 21.0g/5m, the combined number is 7, the drafting multiple is 8.2, the roller gauge is mm140 x 158, and the vehicle speed is 220 m/min.
c. The roving process comprises the following steps: the quantitative weight of wool top is 50g/10m, the twist coefficient is 36, the drafting multiple is 8.4, the roller gauge is 147-160 mm, and the rotating speed of the front roller is 310 r/min.
d. The spinning process comprises the following steps: 18.45tex of yarn count, 28.5 of draft multiple, 1.13 of back draft multiple, 220 of twist coefficient, 145-158 of roller gauge mm, 230r/mim of front roller rotating speed,
e. a yarn steaming process: circulating for 1, at the temperature of 90 ℃, and under the negative pressure of 200mb for 8 min; and (3) circulating for 2, at the temperature of 100 ℃, under the negative pressure of 240mb, and for 30 min.
The yarn quality indexes are as follows:
drawing and breaking spinning:
traditional short fiber spinning:
example 2.
The main process for spinning the 18.45tex 60% aramid fiber 40% carbon fiber blended yarn comprises the following steps:
(1) process flow
Filament bundle drafting and breaking machine-BCM 102 drawing frame (pre-drawing) -BCM102 drawing frame (head drawing) -BCM102 drawing frame (final drawing) -FB477 roving frame-B519 spinning frame-steaming machine-self-doffing machine-packaging
(2) Process parameters
a. Drawing, breaking and sliver making process: the specification of the aramid fiber filament bundle is 80-100g/m, the distance of the first drafting zone is 500mm, and the drafting multiple (times) is 1.07. The second drafting zone has a distance of 147mm and a drafting multiple of 6-7.5. The third drafting zone has a gauge distance of 110-130mm and a drafting multiple (multiple) of 2.0-3.5. The vehicle speed is 30 m/min. The weight of the produced sliver is 6.5g/m, and the main length of the wool top fiber is 120 mm.
The specification of the carbon fiber filament bundle is 80-100g/m, the distance of the first drafting zone is 450mm, and the drafting multiple (times) is 1.05. The space distance of the second drafting zone is 1470mm, and the drafting multiple is 5.5-7.0. The third drafting zone has a gauge distance of 110-130mm and a drafting multiple (multiple) of 1.8-3.0. The vehicle speed is 30 m/min. The weight of the drawn sliver is 6.5g/m, and the main length of the fiber is 120 mm.
b. Drawing process:
pre-merging: the quantitative determination of the aramid fiber wool top is 29.25g/5m, the combined number is 6, the drafting multiple is 6.67, the roller gauge is mm140 x 155, and the vehicle speed is 210 m/min.
And (3) head combination: the quantitative determination of the aramid fiber/carbon fiber mixed wool top is 30g/5m, the number of the aramid fiber/carbon fiber mixed wool tops is 8, the number of the aramid fiber wool tops is 5, the number of the carbon fiber wool tops is 3, the drafting multiple is 8.15, the roller gauge is mm140 x 155, and the vehicle speed is 210 m/min.
And (3) performing final combination: the aramid fiber/carbon fiber mixed wool top is quantified by 24g/5m, the number of the combined wool tops is 8, the drafting multiple is 8.75, the roller gauge is 140 mm and 158, and the vehicle speed is 220 m/min.
c. The roving process comprises the following steps: the quantitative amount of wool top is 5.5g/10m, the twist coefficient is 32, the drafting multiple is 8.7, the roller gauge is 147-160 mm, and the rotating speed of the front roller is 310 r/min.
d. The spinning process comprises the following steps: the yarn count is 18.45tex, the draft multiple is 29.8, the back draft multiple is 1.13, the twist factor is 220, the roller gauge is 145-158 mm, and the rotating speed of the front roller is 200 r/min.
e. A yarn steaming process: circulating 1, at the temperature of 85 ℃, and under the negative pressure of 200mb for 8 min; and (3) circulating for 2, at the temperature of 95 ℃, under the negative pressure of 240mb for 30 min.
The yarn quality indexes are as follows:
drawing and breaking spinning:
traditional staple ring spun yarn
Example 3.
The main process steps of spinning 18.45tex 60% flame-retardant acrylic/40% viscose blended yarn are as follows:
(1) process flow
Filament bundle drafting and breaking machine-BCM 102 drawing frame (pre-drawing) -BCM102 drawing frame (head drawing) -BCM102 drawing frame (final drawing) -FB477 roving frame-B519 spinning frame-steaming machine-self-doffing machine-packaging
(2) Process parameters
a. Drawing, breaking and sliver making process: the specification of the flame-retardant acrylic filament bundle is 80-100g/m, the distance of the first drafting zone is 450mm, and the drafting multiple (times) is 1.05. The second drafting zone has a space distance of 139mm and a drafting multiple of 5.5-6.9. The third drafting zone has a gauge distance of 110-130mm and a drafting multiple of 1.6-2.2. The vehicle speed is 30 m/min. The weight of the produced sliver is 6.5g/m, and the main length of the wool top fiber is 120 mm.
The viscose filament bundle specification is 80-100g/m, the first drafting zone spacing is 200mm, and the drafting multiple is 1.0. The second drafting zone has a gauge of 800mm and a drafting multiple of 3.5-6.0. The third drafting zone has a gauge distance of 110-130mm and a drafting multiple of 1.3-1.9. The vehicle speed is 30 m/min. The weight of the drawn sliver is 6.5g/m, and the main length of the fiber is 120 mm.
b. Drawing process:
pre-merging: the quantitative amount of the flame-retardant acrylic wool tops is 29.25g/5m, the number of the flame-retardant acrylic wool tops is 6, the drafting multiple (times) is 6.67, the roller gauge is mm140 × 155, and the vehicle speed is 210 m/min.
And (3) head combination: the quantitative amount of the flame-retardant acrylic fiber/viscose fiber mixed wool tops is 30g/5m, the number of the flame-retardant acrylic fiber/viscose fiber mixed wool tops is 8, wherein the number of the flame-retardant acrylic fiber wool tops is 5, the number of the viscose fiber wool tops is 3, the drafting multiple (multiple) is 8.15, the roller spacing is mm140 x 155, and the vehicle speed is 210 m/min.
And (3) performing final combination: the quantitative determination of the aramid fiber/carbon fiber mixed wool top is 24g/5m, the combined number is 8, the drafting multiple (times) is 8.75, the roller gauge is mm142 x 158, and the vehicle speed is 220 m/min.
c. The roving process comprises the following steps: the quantitative amount of wool top is 5.5g/10m, the twist coefficient is 32, the drafting multiple is 8.7, the roller gauge is 147-160 mm, and the rotating speed of the front roller is 310 r/min.
d. The spinning process comprises the following steps: the yarn count is 18.45tex, the draft multiple is 29.8, the back draft multiple is 1.13, the twist factor is 220, the roller gauge is 145-158 mm, and the rotating speed of the front roller is 200 r/min.
e. A yarn steaming process: circulating 1, at the temperature of 75 ℃, and under the negative pressure of 200mb for 8 min; and circulating for 2, at the temperature of 90 ℃, under the negative pressure of 240mb for 30 min.
The yarn quality indexes are as follows:
drawing and breaking spinning:
traditional ring spinning:
the above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the content of the claims of the present invention should be within the technical scope of the present invention.
Claims (10)
1. An extra-long fiber spinnable yarn for thermal protective materials, characterized in that: the spinnable yarn has the thermal protection material extra-long fiber with the length of 102-120 mm.
2. A method of processing an extra-long fiber spinnable yarn for thermal protective material as claimed in claim 1, characterized in that: the method comprises the following process steps:
firstly, mechanically drafting and breaking a required high-new-performance thermal protection filament bundle to prepare an extra-long fiber wool top of 102-120 mm;
secondly, mixing the broken wool tops by drafting to obtain quantitative wool tops required by a roving process;
thirdly, spinning the wool tops with required quantity into roving through a roving machine;
fourthly, spinning the rough yarn into spun yarn with required specification by a spinning machine;
and fifthly, steaming and shaping the spun yarn by a yarn steaming machine.
3. The method for processing an extra-long fiber spinnable yarn for thermal protection material as claimed in claim 2, wherein:
when the spinnable yarn is pure spinning yarn, the drawing process of the second step comprises head drawing and end drawing.
4. The method for processing an extra-long fiber spinnable yarn for thermal protection material as claimed in claim 3, wherein:
the drawing process parameters are as follows: the head doubling top has the fixed weight of 20-40g/5m, the drafting multiple of 5-10 times, the roller gauge mm140 x 220 and the vehicle speed of 180-240 m/min; the final drawing multiple is 5-10 times, the roller gauge is mm140 x 220, and the vehicle speed is 180-240 m/min.
5. The method for processing an extra-long fiber spinnable yarn for thermal protection material as claimed in claim 2, wherein:
when the spinnable yarn is blended spun yarn, the drawing process of the second step comprises pre-drawing, head drawing and end drawing;
the pre-drawing is to adjust the quantitative of the high and new performance thermal protection drafting broken long fiber wool which needs to be blended according to the pre-drawing.
6. The method for processing an extra-long fiber spinnable yarn for thermal protection material as claimed in claim 5, wherein:
the parameters of the pre-drawing process are as follows: the weight of the wool tops is 20-40g/5m, the number of the wool tops is 5-10, the drafting multiple is 5-10 times, the roller gauge is 140 mm/220, and the vehicle speed is 180-240 m/min;
the drawing process parameters are as follows: the head doubling top has the fixed weight of 20-40g/5m, the drafting multiple of 5-10 times, the roller gauge mm140 x 220 and the vehicle speed of 180-240 m/min; the final drawing multiple is 5-10 times, the roller gauge is mm140 x 220, and the vehicle speed is 180-240 m/min.
7. The processing method of the ultra-long fiber spinnable yarn for the thermal protection material as claimed in claim 2, 3, 4, 5 or 6, wherein: the first step of break drafting has three main drafting areas which are respectively: the first drafting fracture zone has the distance of 200-500mm, the second drafting fracture zone has the distance of 600-1500mm, the third drafting fracture zone has the distance of 100-130mm, the vehicle speed is 30-80m/min, and the fixed weight of the wool top is 6.5 g/m.
8. The method for processing an extra-long fiber spinnable yarn for thermal protection material as claimed in claim 7, wherein: the roving process parameters in the third step are as follows: the twist coefficient is 26-32, the drafting multiple is 6-10, the roller gauge is mm130 x 220, the vehicle speed is 1800-240m/min, and the rotating speed of the front roller is 280-340 r/min.
9. The method for processing an extra-long fiber spinnable yarn for thermal protection material as claimed in claim 7, wherein: the spun yarn process parameters in the fourth step are as follows: the yarn count is 18.45tex, the draft multiple is 26-34 times, the back draft multiple is 1.00-1.18, the twist factor is 160-300, the roller gauge is mm130 x 220, and the rotating speed of the front roller is 180-280 r/min.
10. The method for processing an extra-long fiber spinnable yarn for thermal protection material as claimed in claim 7, wherein: the yarn steaming and shaping process parameters in the fifth step are as follows: circulating 1, at the temperature of 70-130 ℃, under the negative pressure of 180-240mb for 6-10 min; and (2) circulating at 90-130 ℃ under a negative pressure of 200-280mb for 20-60 min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117418341A (en) * | 2023-12-04 | 2024-01-19 | 山东环升新材料科技有限公司 | Ultra-long high-performance fiber flame-retardant yarn |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117418341A (en) * | 2023-12-04 | 2024-01-19 | 山东环升新材料科技有限公司 | Ultra-long high-performance fiber flame-retardant yarn |
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