CN111321493A - Flame-retardant yarn - Google Patents
Flame-retardant yarn Download PDFInfo
- Publication number
- CN111321493A CN111321493A CN202010140376.8A CN202010140376A CN111321493A CN 111321493 A CN111321493 A CN 111321493A CN 202010140376 A CN202010140376 A CN 202010140376A CN 111321493 A CN111321493 A CN 111321493A
- Authority
- CN
- China
- Prior art keywords
- flame
- retardant
- fiber
- viscose
- yarn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- D02G3/04—Blended or other yarns or threads containing components made from different materials
- D02G3/045—Blended or other yarns or threads containing components made from different materials all components being made from artificial or synthetic material
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/02—Chemical after-treatment of artificial filaments or the like during manufacture of cellulose, cellulose derivatives, or proteins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- 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
- D02G3/04—Blended or other yarns or threads containing components made from different materials
-
- 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
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/443—Heat-resistant, fireproof or flame-retardant yarns or threads
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
- D06M13/288—Phosphonic or phosphonous acids or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
- D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
- D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
- D06M13/298—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof containing halogen atoms
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/30—Flame or heat resistance, fire retardancy properties
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
- D10B2201/24—Viscose
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
A flame-retardant yarn is prepared by blending flame-retardant viscose fibers and at least one high-strength flame-retardant fiber; the high-strength flame-retardant fiber is flame-retardant polyester or flame-retardant finishing viscose fiber; in the flame-retardant yarn, the weight percentage of the flame-retardant viscose fiber is 40-90%. The flame-retardant yarn disclosed by the invention fully utilizes the excellent flame-retardant property of the flame-retardant viscose fiber, is blended with other fibers with large strength and good spinnability, reasonably balances and avoids the defects of the raw materials by adjusting the using amount of the raw materials, and amplifies the advantages of the raw materials, so that the flame-retardant property and the strength of the yarn are optimized, and the yarn with high flame retardance, lasting flame-retardant effect, high elongation and wear resistance is woven.
Description
Technical Field
The invention belongs to the technical field of spinning, and particularly relates to a flame-retardant yarn.
Background
The high-strength flame-retardant fabric is mainly applied to home textiles such as mattresses, pillow cases and the like. On the one hand, the flame-retardant fabric can meet the requirements of flame-retardant standards, such as the flame-retardant standard of a 16CFR1633 mattress in the United states. On the other hand, the fabric has higher fiber strength. In the prior art, the flame-retardant fabric is prepared by blending glass fiber and viscose fiber and soaking the blended fabric by using a flame retardant. This technical solution has the following drawbacks: although the glass fiber can resist high temperature, is non-combustible and resists corrosion, the glass fiber can cause allergy to some people and produce contact dermatitis, and the international cancer research organization of the world health organization lists the glass fiber in a category 3 carcinogen list. In addition, the fabric has good flame retardant effect in the initial stage because the fabric is woven by fibers and then is soaked in liquid containing the flame retardant, but the fabric is not washable, and the flame retardant effect gradually declines or even goes out of existence along with the lapse of the using time and the increase of the washing times.
US5506043 discloses a high temperature resistant and heat resistant textile yarn, which is spun into a flame retardant glass fiber core-spun yarn by taking glass fiber yarn as an inner core and flame retardant fiber as outer wrapping fiber, wherein the outer wrapping fiber is at least one of modified acrylic fiber, aramid fiber, phenolic fiber, partially oxidized polyacrylonitrile fiber and fully oxidized polyacrylonitrile fiber. The flame-retardant glass fiber core-spun yarn is woven into cylindrical cloth with high elasticity, and can be applied to mattress covers. However, the mattress cover woven by the yarn has good flame retardant effect, but because of the glass fiber, the glass fiber is easy to expose after the outer fiber is worn after the mattress cover is used for a long time, and the health of human body is influenced.
CN201510870804.1 discloses an intumescent flame retardant system for flame retarding of a filler in a mattress or a pillow and a method thereof, wherein a phosphorus-containing and nitrogen-containing inorganic flame retardant is processed into a cellulose fiber or a yarn or cloth blended with a chemical fiber, so that the yarn or cloth and the phosphorus-containing and nitrogen-containing inorganic flame retardant form the intumescent flame retardant system, and the covering intumescent function of the phosphorus-containing and nitrogen-containing inorganic flame retardant is utilized when the phosphorus-containing and nitrogen-containing inorganic flame retardant is heated. The technical proposal is to dip the blended yarn or cloth into the aqueous solution of the inorganic fire retardant containing phosphorus and nitrogen, and then dehydrate and dry the yarn or cloth. Although the use of glass fiber is avoided, the flame retardant effect is achieved by a method of dipping the flame retardant aqueous solution, and the flame retardant covers the surface of the yarn and is not washable.
Disclosure of Invention
The invention discloses flame-retardant yarn which is prepared by blending flame-retardant viscose fiber with high flame-retardant property and at least one high-strength flame-retardant fiber.
The invention is realized by the following technical scheme:
a flame-retardant yarn is prepared by blending flame-retardant viscose fibers and at least one high-strength flame-retardant fiber; the high-strength flame-retardant fiber is flame-retardant polyester or flame-retardant finishing viscose fiber; in the flame-retardant yarn, the weight percentage of the flame-retardant viscose fiber is 40-90%.
The flame-retardant viscose fiber and the high-strength flame-retardant fiber are woven into flame-retardant yarn by ring spinning, and the ring spinning is a mechanical spinning method which is formed by twisting a spindle, a ring and a steel wire ring and drafting by a roller. The fiber strips of the fiber rough yarn after drafting are led in by the ring traveler in a rotating way, the winding speed of the bobbin is faster than that of the traveler, and the fiber rough yarn is twisted to be made into spun yarn. The steel wire ring is driven by the bobbin to rotate around the steel collar through the yarn to twist, and meanwhile, the friction of the steel collar enables the rotating speed of the steel wire ring to be slightly less than that of the bobbin to be wound, so that the spinning speed is high. The yarn is woven by ring spinning, the shape of the yarn is a conical spiral line with fibers transferred inside and outside, the fibers are wound and connected inside and outside the yarn, the structure of the yarn is compact, the strength is high, and the yarn is suitable for spinning high-strength flame-retardant yarns.
The common viscose fiber raw material is natural cellulose, has rich sources, biodegradability, low price, mature preparation process and excellent mechanical property, and in addition, the viscose fiber raw material is not melted and dropped during combustion. However, viscose is a regenerated cellulose fiber with a structure of carbohydrate and a limiting oxygen index, LOI, of 19%, which is extremely combustible at a decomposition temperature of 270 to 350 ℃ and a combustion temperature of 320 to 350 ℃. The common viscose fiber does not accord with the flame retardant standard of the textile, so the flame retardant viscose fiber which accords with the flame retardant standard of the textile is prepared after the common viscose fiber and the flame retardant are treated by a blending method, a graft copolymerization method, a post-finishing method and the like, and the flame retardant viscose fiber has the characteristics of excellent hygroscopicity, air permeability, light and thin texture, smooth hand feeling, static resistance, bright color after dyeing or printing and the like. The limit oxygen index value of the flame-retardant viscose fiber is not lower than 32. And can be blended with cotton, wool and the like, and the flame-retardant viscose fiber can be blended with other fibers, so that textiles with complementary performances, such as improvement of physical and mechanical performances, moisture absorption and sweat discharge performances, hand softness, fatigue resistance and the like of the fabrics, can be obtained.
However, after the viscose fiber and the flame retardant are mixed, the system has certain instability, the flame retardant plays a role of an electrolyte, the viscose fiber is aged, the proportion of an amorphous area of the fiber is increased after the flame retardant is added, and the crystallinity is reduced. Along with the increase of the addition amount of the flame retardant, the size of formed flame-retardant particles is increased and the number of gel particles is increased, so that a spinning nozzle is blocked during spinning, the preventability of the flame-retardant viscose fiber is poor, the strength is obviously reduced compared with that of the common viscose fiber, even the strength is reduced to half of that of the common viscose fiber, and the strength of the flame-retardant viscose fiber is about 2.5 cN/dtex.
The terylene fiber has the advantages of high modulus, high strength, high elasticity, good shape retention property, heat resistance and the like, but the LOI of the terylene fiber is only about 20 percent, belongs to combustible fiber, and occupies a considerable proportion caused by the fire of fiber textiles in a fire accident, and meanwhile, the terylene fiber has serious melt drip phenomenon in the combustion process. The benzene ring of the terylene belongs to macromolecules and has a symmetrical structure. The rigid benzene ring and the flexible lipid group form a conjugated structure, no branched chain exists, the linearity is good, the macromolecules are in a plane configuration, and the molecules are combined by Van der Waals force. The polyester macromolecule has one hydroxyl (-OH) on each side, and no other hydrophilic groups, so that the polyester moisture absorption is poor, the polyester moisture absorption is only 0.2% in a standard state, and the polyester has high melting point due to good rigidity, so that the LOI value of the polyester fabric after DFR finishing can reach more than 40% through flame-retardant finishing, the washing frequency is more than 50 times, and the LOI value is not changed and tends to rise. The hand feeling, the appearance and the strength are not affected. The defects that the polyester macromolecule branched chain is easily decomposed into flammable fusion products under the high-temperature condition, and molten drops can cause flame to spread to other places to cause a larger fire; on the other hand, scald is easily caused. Therefore, the flame-retardant polyester has high strength and good prevention performance, but is not suitable to be used as a flame-retardant textile fabric independently due to melting at high temperature.
The flame-retardant yarn is formed by blending the flame-retardant viscose fiber and the flame-retardant polyester fiber, and the content of the flame-retardant viscose fiber is larger than that of the flame-retardant polyester fiber, so that the flame-retardant performance of the flame-retardant viscose fiber can be well utilized, and the strength of the flame-retardant polyester fiber can be utilized.
According to another embodiment of the invention, when the common viscose fiber is subjected to flame retardant finishing, the excellent mechanical property of the fiber is kept, the limit oxygen index of the common viscose fiber is improved, and the flame retardant finished viscose fiber is blended with the flame retardant viscose fiber with the LOI value not lower than 32 purchased in the market to obtain the high-strength flame retardant yarn. When the common viscose fibers are subjected to flame retardant finishing, after the last washing step in the viscose fiber production process, cellulose tows are soaked in a solution containing a flame retardant for 1-5 hours, and after the soaking is completed, the cellulose tows are dried to obtain the flame retardant finishing viscose fibers, the LOI value is more than 25, and meanwhile, the strength of the fibers is hardly influenced.
Further, the flame-retardant yarn is prepared by blending the following fibers in percentage by weight: 65-90% of flame-retardant viscose fiber and 10-35% of flame-retardant polyester. The fabric woven by the composition yarn has the flame retardant property reaching the 16CFR1633 flame retardant standard and has better elasticity.
Preferably, the flame-retardant yarn is prepared by blending the following fibers in percentage by weight: 80-90% of flame-retardant viscose fiber and 10-20% of flame-retardant polyester. The fabric woven by the composition yarn has the flame retardant performance exceeding the flame retardant standard of 16CFR1633 and has certain elasticity.
Further, the flame-retardant yarn is prepared by blending the following fibers in percentage by weight: 60-80% of flame-retardant viscose fiber and 20-40% of flame-retardant finishing viscose fiber.
Further, the flame-retardant yarn is prepared by blending the following fibers in percentage by weight: 40-60% of flame-retardant viscose fiber, 10-20% of flame-retardant polyester fiber and 30-50% of flame-retardant finishing viscose fiber.
Further, the weight percentage of the flame-retardant viscose fiber is not less than 50%, and the limit oxygen index value is not less than 32. In the flame-retardant yarn, the flame-retardant viscose fiber has the function of improving the flame-retardant property of the yarn, so that the flame-retardant viscose fiber still needs higher LOI after being blended with other yarns, and meets the flame-retardant standard.
Furthermore, the weight percentage of the flame-retardant polyester is not higher than 30 percent, and the strength is not lower than 5.1 cN/dtex. In the flame-retardant yarn, the flame-retardant polyester has the function of enhancing the strength of the yarn, so that the spinnability of the yarn is improved. Therefore, the strength requirement on the flame-retardant polyester is not lower than 5.1 cN/dtex.
The preparation method of the flame-retardant finishing viscose fiber comprises the following steps:
(1) in the viscose fiber production process, after viscose is made into cellulose filaments, cellulose tows are formed on a spinning machine through acid bath of an acid coagulation bath, and the cellulose tows are washed for 2-3 times by clear water;
(2) soaking the cellulose tow treated in the step (1) in a solution containing a flame retardant at a bath ratio of 1-2: 10, stirring once every 30min, wherein the weight of the flame retardant is 10-15% of that of the cellulose tow, the soaking temperature is 50-60 ℃, and the soaking time is 1-5 h;
(3) and taking out the cellulose tow after impregnation from the solution, and drying at the temperature lower than 180 ℃ to obtain the flame-retardant finishing viscose fiber.
In the viscose fiber production process, short fibers in pulp are made into a fiber finished product with a certain length, and the production process comprises the following four processes of viscose preparation, viscose preparation before spinning, fiber forming and fiber post-treatment. When the flame-retardant finished viscose fiber is treated, the flame-retardant finished viscose fiber is in the fourth stage, and in the post-treatment stage of the fiber, because the viscose fiber is formed, the influence on the fiber strength is small, and the flame-retardant performance is obviously improved after flame-retardant finishing.
Furthermore, the flame retardant is a phosphorus-nitrogen flame retardant.
Preferably, the flame retardant for flame-retardant finishing viscose fibers is one or more of tris (2-ethylhexyl) phosphate, tris (2-chloroethyl) phosphate, tris (2, 3-dichloropropyl) phosphate, triphosphate (2, 3-dibromopropyl), dimethyl methylphosphonate and tris (butylethyl) phosphate.
The flame retardant is an environment-friendly flame retardant, does not produce secondary pollution and has no side effect on human bodies, after the common viscose fiber is soaked in the solution containing the flame retardant, the combustion of the viscose fiber can be effectively inhibited, the flame retardant has good dispersibility, and the flame retardant has good compatibility with the viscose fiber and does not produce flocculation phenomenon. Meanwhile, the viscose fiber has little influence on various performance indexes of the viscose fiber and is easy to spin.
The invention has the beneficial effects that:
(1) the flame-retardant yarn is prepared by blending the flame-retardant viscose fiber with high flame retardance and the high-strength flame-retardant fiber, wherein the flame-retardant viscose fiber has good flame retardance, the limit oxygen index value is not lower than 32, but the fiber strength is low and the spinnability is poor, and the strength of the flame-retardant viscose fiber is about 2.5 cN/dtex. The higher the weight percentage of the flame-retardant viscose fiber is, the higher the limit oxygen index value is, and the better the flame-retardant effect is. When the weight percentage of the flame-retardant viscose fiber is 90 percent and the flame-retardant viscose fiber is blended with other yarns, the yarns have good flame-retardant effect, the limit oxygen index value is 32, and the strength is 2.1 cN/dtex. The higher the weight percentage of the flame-retardant polyester is, the better the strength of the yarn is, when the weight percentage of the flame-retardant polyester is 35%, the strength is 3.1cN/dtex after the flame-retardant polyester is blended with the flame-retardant viscose fiber, the limit oxygen index value is 27, and the flame-retardant effect is good. The invention reasonably balances and avoids the defects of all raw materials and amplifies the advantages of the raw materials, thereby optimizing the flame retardant property and the strength of the yarn, and weaving the yarn with high flame retardant property, lasting flame retardant effect, high tensile elongation and wear resistance.
(2) The yarn production process is simple, the production cost of the yarn can be effectively reduced, and the economic benefit is improved.
Detailed Description
The present invention may be understood more readily by reference to the following detailed description of the invention, but is not limited to the specific methods, conditions or parameters described and/or illustrated herein, and the terminology used herein is for the purpose of describing particular embodiments by way of example only and is not intended to be limiting of the claimed technology.
The viscose fiber is prepared by using natural cellulose as raw material, destroying a large amount of intramolecular and intermolecular hydrogen bonds through alkali treatment, and then passing through the natural cellulose and CS2Reacting to generate cellulose sulfonate, and then obtaining the spinning viscose with higher spinnability through a series of procedures such as mixing, filtering, defoaming, curing and the like; the spinning process is that viscose is made into viscose fiber by a spinning machine under the condition of acid bath; then the viscose fiber with good quality can be prepared by the steps of washing, desulfurizing, bleaching, pickling, drying and the like. The flame-retardant viscose fiber is prepared by blending or bonding a flame retardant into cellulose before the spinning process of common viscose fiber and then performing the spinning process; in another method, the flame retardant is physically or chemically attached to the viscose fiber after the spinning process. At present, the industrialization mainly adopts a blending flame-retardant technology, the dosage of the flame retardant is about 20%, and the viscosity of a spinning solution and the mechanical property of a fiber material are reduced and the spinning difficulty is increased due to poor compatibility of the flame retardant and cellulose. The oxygen limit index of the flame-retardant viscose fiber adopted by the invention is not lower than 32.
The invention discloses a ring spinning process of flame-retardant yarn, which comprises the following steps:
A) weighing the flame-retardant viscose fiber and the high-strength flame-retardant fiber according to the weight ratio, and mixing to obtain mixed fiber;
B) a blowing process, wherein a blowing cotton cleaner is used for opening the mixed fiber obtained in the step A) to prepare a fiber roll with the dry weight of 350 g/m and the length of 25 m;
C) preparing a raw sliver, and carding the fiber coil obtained in the step B) by using a carding machine to obtain a carding sliver with uniform sliver evenness and dry basis weight of 20g/5m, namely the raw sliver;
D) preparing cooked strips, namely drawing 3 flame-retardant viscose fibers and 1 high-strength flame-retardant fiber pre-drawing strip by using a drawing frame to obtain the cooked strips with the dry weight of 16g/10 m;
E) preparing roving strips, and stretching and thinning the drawn strips obtained in the step D) by using a roving machine to obtain the roving strips with the dry basis weight of 4.0g/10m and the twist of 3.5 twists/10 cm;
F) spinning, namely spinning the roving strips obtained in the step E) into blended compact yarns with the dry weight of 1.6g/100m and the twist of 80 twist/10 cm by using a compact spinning device;
G) performing hot set twisting, namely performing hot set twisting on the blended compact yarn obtained in the step F) by using a hot set twisting pot, wherein the hot set twisting has the functions of eliminating the internal stress of the yarn and stabilizing the twist;
H) and G) spooling, namely winding the compact spun yarn subjected to the hot twist in the step G), namely the compact yarn, on a bobbin to obtain the yarn.
The preparation method of the flame-retardant finishing viscose fiber comprises the following steps:
(1) in the viscose fiber production process, after viscose is made into cellulose filaments, cellulose tows are formed on a spinning machine through acid bath of an acid coagulation bath, and the cellulose tows are washed for 2-3 times by clear water;
(2) soaking the cellulose tow treated in the step (1) in a solution containing a flame retardant, namely tris (2-ethylhexyl) phosphate, at a bath ratio of 1:10, stirring once every 30min, wherein the flame retardant accounts for 10% of the weight of the cellulose tow, the soaking temperature is 50-60 ℃, and the soaking time is 5 hours;
(3) and taking out the cellulose tow after impregnation from the solution, and drying at the temperature lower than 180 ℃ to obtain the flame-retardant finishing viscose fiber.
In the above method, the flame retardant may be one or more of tris (2-chloroethyl) phosphate, tris (2, 3-dichloropropyl) phosphate, triphosphate (2, 3-dibromopropyl), dimethyl methylphosphonate, and tris (butylethyl) phosphate.
The flame-retardant yarn and the fabric woven by the flame-retardant yarn have the following flame-retardant performance tests:
oxygen limiting index (LOI), expressed as a percentage by volume of the mixture of oxygen and nitrogen
The lowest oxygen concentration, at astm g/D2863, just supports the flame combustion of the material at the initial room temperature.
And (3) weighing the mass of the material before and after combustion, and calculating the residual mass percentage to obtain the combustion residual rate, wherein the larger the residual rate is, the smaller the quantity of combustible small molecular substances generated by thermal decomposition of the material is, and the better the flame retardant property is.
The mattress woven by the flame-retardant yarn is tested by a flame-retardant standard specified by 16CFR1633, namely a flame jet burner is used for carrying out a combustion test on the surface of the mattress, and the evaluation index is (1) the heat release peak value is less than or equal to 200kW in the test of 30 min. (2) The total heat release amount in the first 10min of combustion is less than or equal to 5 MJ. (3) At least 3 samples are tested, and if one sample fails to meet the two requirements at the same time, the batch of products is judged to be unqualified.
Example 1
According to the weight of the fibers, 90% of the flame-retardant viscose fibers and 10% of the flame-retardant polyester fibers are weighed, and the two fibers are spun into 16s as weaving knitting yarns by a ring spinning frame through a cotton cleaning blended yarn prepared by conventional cotton spinning system equipment.
Example 2
According to the weight of the fibers, 80% of the flame-retardant viscose fibers and 20% of the flame-retardant polyester fibers are weighed, and the two fibers are spun into 21s as weaving knitting yarns by a ring spinning frame through a cotton cleaning blended yarn prepared by conventional cotton spinning system equipment.
Example 3
According to the weight of the fibers, 75% of the flame-retardant viscose fibers and 25% of the flame-retardant polyester fibers are weighed, and the two fibers are spun into 26s as weaving knitting yarns by a ring spinning frame through a cotton cleaning blended yarn prepared by conventional cotton spinning system equipment.
Example 4
According to the weight of the fibers, 65% of the flame-retardant viscose fibers and 35% of the flame-retardant polyester fibers are weighed, and the two fibers are spun into 32s as weaving knitting yarns by a ring spinning frame through a cotton cleaning blended yarn prepared by conventional cotton spinning system equipment.
Example 5
According to the weight of the fibers, 80% of flame-retardant viscose fibers and 20% of flame-retardant finishing viscose fibers are weighed, and the two fibers are spun into 16s serving as weaving knitting yarns through a ring spinning frame after being passed through a cotton cleaning blended sliver prepared by conventional cotton spinning system equipment.
Example 6
According to the weight of the fibers, 75% of the flame-retardant viscose fibers and 25% of the flame-retardant finishing viscose fibers are weighed, and the two fibers are spun into 21s as weaving knitting yarns by a ring spinning frame through a cotton cleaning blended sliver prepared by conventional cotton spinning system equipment.
Example 7
According to the weight of the fibers, 70% of the flame-retardant viscose fibers and 30% of the flame-retardant finishing viscose fibers are weighed, and the two fibers are spun into 26s as weaving knitting yarns by a ring spinning frame through a cotton cleaning blended sliver prepared by conventional cotton spinning system equipment.
Example 8
According to the weight of the fibers, 60% of flame-retardant viscose fibers and 40% of flame-retardant finishing viscose fibers are weighed, and the two fibers are spun into 32s serving as weaving knitting yarns by a ring spinning frame through a cotton cleaning blended sliver prepared by conventional cotton spinning system equipment.
Example 9
According to the weight of the fibers, 40% of flame-retardant viscose fiber, 10% of flame-retardant polyester fiber and 50% of flame-retardant finishing viscose fiber are weighed, and the three fibers are spun into 16s as weaving knitting yarns by a ring spinning frame through a cotton cleaning blended sliver prepared by conventional cotton spinning system equipment.
Example 10
According to the weight of the fibers, 50% of flame-retardant viscose fiber, 10% of flame-retardant polyester fiber and 40% of flame-retardant finishing viscose fiber are weighed, and the three fibers are spun into 21s as weaving knitting yarns by a ring spinning frame through a cotton cleaning blended sliver prepared by conventional cotton spinning system equipment.
Example 11
According to the weight of the fibers, 55% of flame-retardant viscose fiber, 10% of flame-retardant polyester fiber and 35% of flame-retardant finishing viscose fiber are weighed, and the three fibers are spun into 26s as weaving knitting yarns by a ring spinning frame through a cotton cleaning blended sliver prepared by conventional cotton spinning system equipment.
Example 12
According to the weight of the fibers, 60% of flame-retardant viscose fiber, 10% of flame-retardant polyester fiber and 30% of flame-retardant finishing viscose fiber are weighed, and the three fibers are spun into 32s as weaving knitting yarns by a ring spinning frame through a cotton cleaning blended sliver prepared by conventional cotton spinning system equipment.
The yarns in examples 1-12 were woven into fabrics and tested for performance, all meeting the flame retardant standard specified in 16CFR1633, and the following properties were further tested:
the above examples show that the oxygen limit index of the fabrics in examples 1-12 is above 26, and meets the flame retardant standard specified in 16CFR 1633. The fabric has better strength which is more than 2.0 cN/dtex. The higher the weight percentage of the flame-retardant viscose fiber is, the higher the limit oxygen index value is, and the better the flame-retardant effect is. When the weight percentage of the flame-retardant viscose fiber is 90 percent and the flame-retardant viscose fiber is blended with other yarns, the yarns have good flame-retardant effect, the limit oxygen index value is 32, and the strength is 2.1 cN/dtex. The higher the weight percentage of the flame-retardant polyester is, the better the strength of the yarn is, when the weight percentage of the flame-retardant polyester is 35%, the strength is 3.1cN/dtex after the flame-retardant polyester is blended with the flame-retardant viscose fiber, the limit oxygen index value is 27, and the flame-retardant effect is good.
Claims (10)
1. The flame-retardant yarn is characterized by being prepared by blending flame-retardant viscose fibers and at least one high-strength flame-retardant fiber; the high-strength flame-retardant fiber is flame-retardant polyester or flame-retardant finishing viscose fiber;
in the flame-retardant yarn, the weight percentage of the flame-retardant viscose fiber is 40-90%.
2. The flame-retardant yarn according to claim 1, which is prepared by blending the following fibers in percentage by weight: 65-90% of flame-retardant viscose fiber and 10-35% of flame-retardant polyester.
3. The flame-retardant yarn according to claim 1, which is prepared by blending the following fibers in percentage by weight: 40-60% of flame-retardant viscose fiber, 10-20% of flame-retardant polyester fiber and 30-50% of flame-retardant finishing viscose fiber.
4. The flame-retardant yarn according to claim 1, which is prepared by blending the following fibers in percentage by weight: 60-80% of flame-retardant viscose fiber and 20-40% of flame-retardant finishing viscose fiber.
5. The flame-retardant yarn according to any one of claims 1 to 3, wherein the flame-retardant polyester fiber is not higher than 30% by weight and has a tenacity of not less than 5.1 cN/dtex.
6. The flame-retardant yarn of any one of claims 1-4 wherein the flame-retardant adhesive fiber is not less than 50 weight percent and has a limiting oxygen index value of not less than 32.
7. A preparation method of flame-retardant finishing viscose fibers is characterized by comprising the following steps:
(1) in the viscose fiber production process, after viscose is made into cellulose filaments, cellulose tows are formed on a spinning machine through acid bath of an acid coagulation bath, and the cellulose tows are washed for 2-3 times by clear water;
(2) soaking the cellulose tow treated in the step (1) in a solution containing a flame retardant at a bath ratio of 1-2: 10, stirring once every 30min, wherein the weight of the flame retardant is 10-15% of that of the cellulose tow, the soaking temperature is 50-60 ℃, and the soaking time is 1-5 h;
(3) and taking out the cellulose tow after impregnation from the solution, and drying at the temperature lower than 180 ℃ to obtain the flame-retardant finishing viscose fiber.
8. The method for preparing the flame-retardant finishing viscose fiber according to claim 7, wherein the flame retardant is a phosphorus-nitrogen flame retardant: one or more of tris (2-ethylhexyl) phosphate, tris (2-chloroethyl) phosphate, tris (2, 3-dichloropropyl) phosphate, triphosphate (2, 3-dibromopropyl), dimethyl methylphosphonate and tris (butylethyl) phosphate.
9. A high-strength flame-retardant fabric which is woven by the flame-retardant yarn as claimed in any one of claims 1 to 4.
10. The high-strength flame-retardant fabric according to claim 9, wherein the preparation method of the flame-retardant viscose fiber comprises the following steps:
(1) in the viscose fiber production process, after viscose is made into cellulose filaments, cellulose tows are formed on a spinning machine through acid bath of an acid coagulation bath, and the cellulose tows are washed for 2-3 times by clear water;
(2) soaking the cellulose tow treated in the step (1) in a solution containing a flame retardant at a bath ratio of 1-2: 10, stirring once every 30min, wherein the weight of the flame retardant is 10-15% of that of the cellulose tow, the soaking temperature is 50-60 ℃, and the soaking time is 1-5 h;
(3) and taking out the cellulose tow after impregnation from the solution, and drying at the temperature lower than 180 ℃ to obtain the flame-retardant finishing viscose fiber.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010140376.8A CN111321493A (en) | 2020-03-03 | 2020-03-03 | Flame-retardant yarn |
| US17/061,528 US20210277545A1 (en) | 2020-03-03 | 2020-10-01 | Flame retardant yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010140376.8A CN111321493A (en) | 2020-03-03 | 2020-03-03 | Flame-retardant yarn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111321493A true CN111321493A (en) | 2020-06-23 |
Family
ID=71163866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010140376.8A Pending CN111321493A (en) | 2020-03-03 | 2020-03-03 | Flame-retardant yarn |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20210277545A1 (en) |
| CN (1) | CN111321493A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267190A (en) * | 2020-10-21 | 2021-01-26 | 南通神马线业有限公司 | Novel high-comfort flame-retardant yarn |
| CN114457480A (en) * | 2022-03-02 | 2022-05-10 | 建湖县盛峰纱线有限公司 | Spandex flame-retardant yarn and preparation method thereof |
| CN114622318A (en) * | 2020-12-14 | 2022-06-14 | 无锡高仕康新材料科技有限公司 | Preparation method of long fiber high-strength yarn |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182156B (en) * | 2022-06-22 | 2024-04-16 | 南通瑞意嘉纺织科技有限公司 | Blended flame-retardant fabric containing graphene fibers |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113078A (en) * | 2015-09-28 | 2015-12-02 | 北京赛欧兰阻燃纤维有限公司 | Blend of organic silicone-nitrogen anti-flaming viscose staple fibers and anti-flaming polyester |
| CN110172740A (en) * | 2019-02-26 | 2019-08-27 | 东华大学 | A kind of preparation method of fire-retardant cellulose fiber |
| CN110172741A (en) * | 2019-02-26 | 2019-08-27 | 东华大学 | A kind of preparation method of functional fiber element fiber |
-
2020
- 2020-03-03 CN CN202010140376.8A patent/CN111321493A/en active Pending
- 2020-10-01 US US17/061,528 patent/US20210277545A1/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113078A (en) * | 2015-09-28 | 2015-12-02 | 北京赛欧兰阻燃纤维有限公司 | Blend of organic silicone-nitrogen anti-flaming viscose staple fibers and anti-flaming polyester |
| CN110172740A (en) * | 2019-02-26 | 2019-08-27 | 东华大学 | A kind of preparation method of fire-retardant cellulose fiber |
| CN110172741A (en) * | 2019-02-26 | 2019-08-27 | 东华大学 | A kind of preparation method of functional fiber element fiber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267190A (en) * | 2020-10-21 | 2021-01-26 | 南通神马线业有限公司 | Novel high-comfort flame-retardant yarn |
| CN114622318A (en) * | 2020-12-14 | 2022-06-14 | 无锡高仕康新材料科技有限公司 | Preparation method of long fiber high-strength yarn |
| CN114457480A (en) * | 2022-03-02 | 2022-05-10 | 建湖县盛峰纱线有限公司 | Spandex flame-retardant yarn and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| US20210277545A1 (en) | 2021-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111321493A (en) | Flame-retardant yarn | |
| CN106048802B (en) | A kind of multicomponent fire resistance fibre ring spinning line and its production method and purposes | |
| CN111394852B (en) | Preparation method of functional double-color slub fancy yarn | |
| CN101638822A (en) | Union yarn of terylene fibers, viscose fibers and bamboo fibers, and production method thereof | |
| CN111809291B (en) | Production process of yak hair/wool blended yarn woven fabric | |
| CN109023564B (en) | Preparation method of polylactic acid colored short fibers | |
| CN111270378A (en) | Preparation method of novel polylactic acid wool blended yarn | |
| CN111663216B (en) | Moisture-conductive quick-drying type composite yarn, preparation method thereof and fabric | |
| CN113897714B (en) | Lyocell/cotton fiber blended yarn and preparation method thereof | |
| CN104611796A (en) | Fire resistant fiber blended yarn and production method thereof | |
| CN113802232A (en) | Bamboo fiber and cotton fiber blended yarn and manufacturing process thereof | |
| CN112064180A (en) | Milk protein fiber and modal fiber blended fabric and preparation process thereof | |
| CN112877875A (en) | Antibacterial moisture-conducting knitted fabric and preparation method thereof | |
| CN103014988B (en) | Infant wrapping quilt and weaving process thereof | |
| CN114000365B (en) | Dyed nylon yarn, preparation method thereof and textile product | |
| CN116657319A (en) | Production method of ecological bamboo pulp regenerated cellulose fabric | |
| CN112359456A (en) | Preparation process of copper ion polyester fiber and regenerated cellulose fiber antibacterial high count yarn | |
| CN107663696A (en) | One kind is permanently from fire-retardant household textiles fabric | |
| CN111549415B (en) | Aramid fiber flame-retardant antibacterial protective socks | |
| CN114855333B (en) | High Jiang Chaobao polyimide fabric and preparation method thereof | |
| CN113957588B (en) | Three-dimensional curled hollow acrylic fiber/modal blended fabric and preparation method thereof | |
| CN112981643B (en) | Preparation method of high-count composite yarn | |
| CN112267190A (en) | Novel high-comfort flame-retardant yarn | |
| CN112210863A (en) | Flame-retardant sewing thread | |
| CN117661167A (en) | Rabbit wool blended yarn and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |