KR101587451B1 - Sheath-core type non-halogen flame-retardant composite fibers and yarns produced therefrom - Google Patents

Sheath-core type non-halogen flame-retardant composite fibers and yarns produced therefrom Download PDF

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Publication number
KR101587451B1
KR101587451B1 KR1020140167447A KR20140167447A KR101587451B1 KR 101587451 B1 KR101587451 B1 KR 101587451B1 KR 1020140167447 A KR1020140167447 A KR 1020140167447A KR 20140167447 A KR20140167447 A KR 20140167447A KR 101587451 B1 KR101587451 B1 KR 101587451B1
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South Korea
Prior art keywords
flame retardant
thermoplastic polyurethane
polyurethane resin
flame
yarn
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KR1020140167447A
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Korean (ko)
Inventor
강대수
김우석
전승호
이성만
박종
백남오
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(주)폴리사이언텍
주식회사창민
에코얀주식회사
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Priority to KR1020140167447A priority Critical patent/KR101587451B1/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/34—Core-skin structure; Spinnerette packs therefor
    • 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
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
    • 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them

Abstract

The present invention relates to a cis-core type composite yarn, wherein the sheath component is a non-halogenated flame retardant-containing flame-retardant thermoplastic polyurethane resin composition, and the core component is a cis-cobalt polyisocyanate compound selected from the group consisting of a polyester resin, a polyamide resin and a polyolefin resin. Core type non-halogen flame retarding composite yarn. Specifically, a non-halogen flame retardant-containing flame-retardant thermoplastic polyurethane resin composition is used as a sheath component, and as a core component, a sheath obtained by fusion-spinning using any one resin selected from the group consisting of a polyester resin, a polyamide resin and a polyolefin resin A core type non-halogen flame retarding composite yarn, or a yarn selected from the group consisting of a polyester yarn, a polyamide yarn and a polyolefin yarn as a core component and a non-halogen flame retardant-containing flame retardant thermoplastic polyurethane resin composition as a sheath component Core type non-halogen flame retarding composite yarn obtained by extrusion coating the yarn. The composite yarn of the present invention is environmentally friendly and exhibits excellent flame retardancy and can be used for various interior applications such as curtains and blinds as it has properties suitable for various interior fabrics.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheath-core type non-halogen flame retarding composite yarn and a fabric made therefrom,

The present invention relates to a new sheath-core type non-halogen flame retarding composite yarn and fabrics made therefrom.

More specifically, it is environmentally friendly and exhibits excellent flame retardancy, and at the same time, it can be used as a curtain, a blind, a wallpaper, a carpet, a flooring, a bedding, a car seat, a sofa fabric, a table fabric, a furniture fabric, a ceiling material, Core type non-halogen flame retarding composite yarn having physical properties such as mechanical properties suitable for use, ultraviolet barrier property and antibacterial property, and fabrics made therefrom.

It is another object of the present invention to provide a method for producing new fibers and fibers and a fabric obtained therefrom, which are excellent in feel at the time of contact with human body while imparting sufficient mechanical properties and flexibility at the time of producing the fabric of the present invention.

Recently, it has been pointed out that when the big fire event occurs, the damage is much more choking problem due to toxic gas than direct burn. As a result, the need for flame retardant materials that do not generate toxic gases has been greatly emphasized, and curtains, blinds, wallpaper, carpets, flooring materials, bedding, car seats, sofa fabrics, table fabrics, furniture fabrics, ceiling materials, automobile interior materials, cruise ship interior materials, In the field of textiles, the emergence of yarns and fabrics made from them has become very urgent.

The recent enhancement of flame retardant requirements is based on the UL-94 standard V-0 or higher and the limit oxygen index according to ISO 4589-2 (minimum oxygen concentration required for continued combustion of materials specified at room temperature, LOI) 28 or more, recently strengthened to be better than 30, better still more than 35 are required. In addition, the smoke density according to ASTM E 662 (the value obtained by measuring the amount of smoke generated when the sample is burned by using a change in the light transmittance, Ds) is less than or equal to 200 based on Ds (4 min) More desirably, it requires less than 100. The concentration of the main gas (CO 2 , CO, HF, HCl, HBr, HCN, NO 2, and SO 2 ) generated during the combustion of the prescribed sample is compared with the reference value Index, R) of 3.2 or less, recently strengthened to be 2.0 or less, and more desirably 1.6 or less.

To this end, a method of attaching a flame retardant agent to the surface of a fiber has been widely practiced until recently (after flame retardation) after fiber production, but this method has a high possibility that the flame retardant agent and the adhesive component are unevenly applied to the surface of the yarn, And the flame retardancy is lowered due to the detachment of the flame retardant by washing. In addition, it is very difficult to reach the level of flame retardancy recently strengthened, and many problems such as discoloration and texture change of fabric have been pointed out.

In order to overcome this problem of post-flame retardation, for example, in U.S. Patent No. 5,990,213, polyester resin containing polyalkylene oxide and tetrabromobisphenol A, decabromodiphenyl oxide, decabrominated diphenylethane, And a bromine-based flame retardant such as 2-bis (tribromophenyl) ethane. Korean Patent Registration No. 10-1225265 proposes the production of a flame retardant fiber by a polybrominated anionic styrenic polymer. However, since the bromine-based flame retardant component has a low heat resistance and the final product content is reduced, In many countries, it is designated as a regulated item because of the problem of harmfulness of the human body which is generated when the combustion occurs.

Instead of applying a bromine-based compound thereto, US Patent Nos. 3,941,752, 5,399,428, and 52-47891 have newly proposed a flame-retardant fiber production method in which a phosphorus compound is bonded to a polyester resin main chain. The acidity increases with the addition of the component, which results in lowering of thermal properties, lowering of melt viscosity and lowering of strength due to the production of diethylene glycol, which is an excess of ethylene glycol produced as a side reaction, There is a problem that it causes unevenness of dyeing in the dyeing process and there is a problem that the cost is increased more than anything.

In order to overcome such disadvantages, the core component is made of a polyester resin such as polyethylene terephthalate and the sheath component is a flame retardant polyester resin containing a phosphorus compound, as in Korean Patent Registration Nos. 10-0915458, 10-1283894, and 10-1276098 . However, in order to secure the flame retardancy of the yarn as a whole, it is necessary to add an extremely large amount of phosphorus compound in the flame-retardant polyester polymerization of the sheath layer, There have been a lot of side effects in the post-processing such as a drastic decrease in the mechanical properties due to the inferiority, a sudden decrease in the flame retardancy due to the surface treatment such as unreacted materials and side reactions, When the flame retardant characteristics are adjusted, flame retardancy It is estimated that the Group has a newer improved methods is urgently requested.

Particularly important is to give various new technologies as mentioned above to secure flame retardancy but it is desirable to provide various new technologies such as curtains, blinds, wallpaper, carpets, flooring materials, bedding, car seats, sofa fabrics, table fabrics, furniture fabrics, ceiling materials, automobile interior materials, New flame-retardant fibers that exhibit environmentally friendly flame retardancy while at least satisfying physical properties such as mechanical properties, ultraviolet barrier properties and antibacterial properties suitable for textile applications such as paper bags and bags, and the emergence of new technologies related to fabrics manufactured therefrom are very urgent and urgent Do.

In order to solve the above problems, the inventor of the present invention has made intensive studies and has come to the present invention. That is, the present invention relates to a non-halogen flame retardant which is environmentally friendly and exhibits excellent flame retardancy by using a non-halogen flame retardant, and simultaneously exhibits flame retardancy such as curtains, blinds, wallpaper, carpets, flooring materials, bedding, car seats, sofa fabrics, table fabrics, Core type non-halogen flame retarding composite yarn having physical properties such as mechanical properties suitable for textile use, ultraviolet barrier property, and antibacterial property, such as lining materials for ships, cruise liners, and bags, and fabrics made therefrom.

Also, it is intended to provide a method for producing new fibers and fibers and a fabric obtained thereby, which are excellent in touch feeling even when human body is contacted, while imparting sufficient mechanical properties and flexibility in the production of the fabric of the present invention.

One aspect of the present invention for achieving the above object is a flame retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant, wherein the core component is a polyester resin, a polyamide resin or a polyolefin resin, Core type non-halogen flame retarding composite yarn.

Another embodiment of the present invention is a flame-retardant thermoplastic polyurethane resin composition comprising a flame-retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant as a sheath component, and using a polyester resin, a polyamide resin or a polyolefin resin as a core component, Core type non-halogen flame retarding composite yarn, which is a stretched yarn obtained by extruding an unstretched yarn obtained by extrusion, or by winding the stretched yarn through a stretching and heat treatment process.

Another embodiment of the present invention is a flame retardant thermoplastic polyurethane resin composition comprising a flame-retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant as a sheath component, and using polyester yarn, polyamide yarn or polyolefin yarn as a core component, Core type non-halogen flame retarding composite yarns obtained by extrusion coating the yarn with the flame retardant thermoplastic polyurethane resin composition.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn wherein the thermoplastic polyurethane resin is an ether type thermoplastic polyurethane resin, an ester type thermoplastic polyurethane resin, a carbonate type thermoplastic polyurethane resin or a mixture thereof .

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn, wherein the thermoplastic polyurethane resin has a melt index (190 캜, load: 21.6 Kg) of 1 to 50 g / 10 min.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn, wherein the hardness of the thermoplastic polyurethane resin is 50 A or more and 80 D or less based on Shore hardness.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retardant composite yarn wherein the non-halogen flame retardant is a phosphorus flame retardant, a nitrogen flame retardant, an inorganic flame retardant or a mixture thereof.

Another embodiment of the present invention is a cis-core type non-halogen flame retardant composite yarn, which is a phosphate flame retardant, a phosphonate flame retardant, a phosphinate flame retardant, a phosphine oxide, .

In another embodiment of the present invention, the phosphate-based flame retardant is selected from the group consisting of trimethyl phosphate, triethyl phosphate, triphenyl phosphate, tricresyl phosphate, cresyl diphenyl phosphate, cres di di 2,6-xylyenyl phosphate, Core non-halogen flame retarding composite yarn which is a phosphate, isopropylphenyl diphenyl phosphate, p-tert-butylphenyl diphenyl phosphate, di-p-tert-butylphenyl diphenyl phosphate, polyaluminum phosphate or a mixture thereof will be.

In another embodiment of the present invention, the nitrogen-based flame retardant is selected from the group consisting of melamine, melamine cyanurate, melamine phosphate, melamine polyphosphate, melamine borate, triphenylisocyanurate, melamine pyrophosphate, Non-halogen flame retarding composite yarn.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retardant composite yarn wherein the inorganic flame retardant is magnesium hydroxide, magnesium oxide, aluminum hydroxide, calcium hydroxide, hydro-magneite, hydrotalcite,

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn having an average particle diameter of 0.01 to 5 탆.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retardant composite yarn wherein the non-halogen flame retardant is a phosphorus flame retardant / nitrogen flame retardant mixture having a weight ratio of 10/90 to 90/10.

In another embodiment of the present invention, the non-halogen flame retardant is a mixture of 100 parts by weight of a phosphorus flame retardant / nitrogen-based flame retardant mixture having a weight ratio of 10/90 to 90/10 and 10-100 parts by weight of an inorganic flame retardant, Type non-halogen flame retarding composite yarn.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn wherein the non-halogen flame retardant is contained in an amount of 10 to 50 wt% of 100 wt% of the entire flame retardant thermoplastic polyurethane resin composition.

Another embodiment of the present invention is a flame retardant thermoplastic polyurethane resin composition comprising 5 to 30 parts by weight of a non-halogen secondary flame retardant added to 100 parts by weight of a non-halogen flame retardant, will be.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn wherein the non-halogen auxiliary flame retardant is zinc borate, antimony trioxide, magnesium oxide, talc or a mixture thereof.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn, wherein the flame retardant thermoplastic polyurethane resin composition further comprises a UV blocking agent.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn wherein the ultraviolet ray blocking agent is further contained in an amount of 0.001 to 3 parts by weight based on 100 parts by weight of the flame retardant thermoplastic polyurethane resin composition.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn wherein the ultraviolet absorbing agent is an ultraviolet absorber, a radical scavenger, an inorganic particle or a mixture thereof.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn wherein the flame retardant thermoplastic polyurethane resin composition further comprises an antibacterial agent.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn wherein the antibacterial agent is further contained in an amount of 0.001 to 3 parts by weight based on 100 parts by weight of the flame retardant thermoplastic polyurethane resin composition.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn, wherein the antibacterial agent is an organic antimicrobial agent, a natural antimicrobial agent, an inorganic antibacterial agent, or a mixture thereof.

In another embodiment of the present invention, the flame-retardant thermoplastic polyurethane resin composition further comprises a cis-polyurethane resin further comprising an additive which is an antioxidant, a processing aid, a lubricant, a heat resistant agent, a quencher, an inorganic filler, an antifouling agent, a dye, Core non-halogen flame retarding composite yarn.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retarding composite yarn having a hardness of 50 A or more and 80 D or less based on Shore hardness of the flame retardant thermoplastic polyurethane resin composition.

Another embodiment of the present invention relates to a cis-core type non-halogen flame retardant composite yarn having a melt index (190 DEG C, load: 21.6 Kg) of the flame retardant thermoplastic polyurethane resin composition of 1 to 50 g / 10 minutes.

Another aspect of the present invention relates to a cis-core type non-halogen flame retarding composite yarn, wherein the cross-sectional area ratio of the sheath component is in the range of 10 to 90%.

Another embodiment of the present invention is a process for producing a composite composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant, or a mixed composition further comprising a non-halogen auxiliary flame retardant, an ultraviolet screening agent, an antibacterial agent, an additive, Kneading and dispersing the mixture by a screw extruder, a mixing roll, a chestnut mixer or a kneader to produce a flame-retardant thermoplastic polyurethane resin composition in the form of pellets.

Another embodiment of the present invention is a flame retardant thermoplastic polyurethane resin composition comprising a flame-retardant thermoplastic polyurethane resin composition containing a thermoplastic polyurethane resin and a non-halogen flame retardant as a sheath component, and using a polyester resin, a polyamide resin or a polyolefin resin as a core component, Core type non-halogen flame retarding composite yarn for producing an unstiffened yarn by co-extruding it, or winding it through a stretching and heat treatment process to produce a drawn yarn.

In another embodiment of the present invention, a flame-retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant is used as a sheath component, and polyester yarn, polyamide yarn or polyolefin yarn is used as a core component, Core type non-halogen flame retarding composite yarn for extrusion coating the flame retardant thermoplastic polyurethane resin composition on the yarn.

Still another aspect of the present invention relates to a fabric in which a cis-core type non-halogen flame retarding composite yarn is produced by weaving or knitting.

Another aspect of the present invention is that the fabric is used for curtains, blinds, wallpaper, carpets, flooring, bedding, car seats, sofa fabrics, table fabrics, furniture fabrics, ceiling materials, , A cruise ship interior material, or a bag.

Hereinafter, the present invention will be described in detail. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

In the present invention, there are three main points of the technology newly introduced to obtain environmentally friendly and excellent flame retardancy and to obtain fibers having excellent physical properties suitable for various interior fabrics such as curtains and blinds.

The first is the incorporation of non-halogen flame retardants as environmentally friendly elements,

The second point is that the thermoplastic polyurethane resin in the general-purpose resin is superior in toughness to any other resin and excellent in the dispersibility to the non-halogen flame retardant. Thus, it is possible to provide a thermoplastic polyurethane resin which is highly non- By newly introducing the concept of manufacturing a flame retardant thermoplastic polyurethane resin composition containing a flame retardant, the deterioration of the mechanical properties due to the addition of an excessive amount of the flame retardant, which was a major technical obstacle in the production of the non-halogen flame retardant fiber,

Third, a flame-retardant thermoplastic polyurethane resin composition containing a non-halogen flame retardant is used as a sheath component, and a conventional polyester resin, polyamide resin or polypropylene resin, which is excellent in mechanical properties and advantageous in terms of economy, - By manufacturing a core type non-halogen flame retarding composite yarn, it is possible to secure environment-friendly flame retardancy and physical properties, particularly mechanical properties, suitable for various interior fabrics and to secure economic efficiency to some extent.

The present invention will be described in more detail.

In the present invention, the cis-core type non-halogen flame retarding composite yarn may be a flame retardant thermoplastic polyurethane resin composition containing a non-halogen flame retardant, and the core component may be a polyester resin, a polyamide resin or a polyolefin resin.

Specifically, the first aspect of the cis-core type non-halogen flame retarding composite yarn according to one example of the present invention may be one obtained by co-extrusion. For example, a flame-retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant is used as a sheath component in a melt-spinning facility equipped with two extruders, and a polyester resin, a polyamide resin or a polyolefin A non-drawn filament obtained by melt-spinning and cooling and solidification using a resin, or a drawn filament obtained by winding the filament through a stretching and heat treatment process.

As a result, a composite yarn of various thicknesses can be obtained, and the composite yarn of the composite yarn can be completely adhered to obtain a composite yarn having higher mechanical properties.

The flame-retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant as a sheath component is used as the sheath-core type non-halogen flame retardant composite yarn according to an embodiment of the present invention, Ester yarn, polyamide yarn or polyolefin yarn, and extrusion coating the flame retardant thermoplastic polyurethane resin composition on the yarn.

As a result, a cis-core type composite yarn having various physical properties at a minimum cost can be obtained.

The cis-core type non-halogen flame retarding composite yarn according to the present invention preferably has a cross-sectional area ratio of the sheath component of 10 to 90%, more preferably 15 to 50%, and most preferably 25 to 35% Do. When the cross-sectional area ratio of the sheath component is less than 10%, it is difficult to secure the desired flame retardancy, and when it exceeds 90%, the mechanical properties may deteriorate.

Such a cis-core type non-halogen flame retarding composite yarn can have excellent flame retardancy and mechanical properties.

First, the sheath component according to one example of the present invention will be described.

The sheath component is a flame-retardant thermoplastic polyurethane resin composition, and may be one comprising a thermoplastic polyurethane resin and a non-halogen flame retardant. At this time, the number average molecular weight of the thermoplastic polyurethane resin may be 20,000 to 300,000.

The thermoplastic polyurethane resin according to an embodiment of the present invention is obtained by the reaction of a polyol, a diisocyanate, a chain extender and a catalyst. The thermoplastic polyurethane resin is obtained by reacting an ether type thermoplastic polyurethane resin produced from an ether type polyol, A polyurethane resin, a carbonate-based thermoplastic polyurethane resin produced from a carbonate-based polyol, or a mixture thereof.

The polyol according to an exemplary embodiment of the present invention may be an ether-based polyol, an ester-based polyol or a carbonate-based polyol. The molecular weight of the polyol is preferably 500 to 8,000 g / mol, more preferably 800 to 5,000 g / mol desirable.

The ether-based polyol is usually obtained by an addition polymerization reaction of an alkylene oxide. The alkylene oxide according to an exemplary embodiment of the present invention may be an ethylene oxide, propylene oxide, butylene oxide, tetrahydrofuran, poly (propylene oxide) glycol, Poly (tetramethylene ether) glycol, or a mixture thereof.

The ester-based polyol is produced by the reaction of one or more dicarboxylic acids with one or more diols. The dicarboxylic acid may be adipic acid, sebacic acid, suberic acid, methyladipic acid, glutaric acid, And the diol is selected from ethylene glycol, 1,3- or 1,2-propylene glycol, 1,4-butanediol, 2-methylpentanediol, 1,5-pentanediol or 1,6-hexanediol, etc. . Also, cyclic carbonates such as epsilon -caprolactone and the like can also be used in the ester-based polyol production.

Examples of the carbonate-based polyol include carbonate-based polyols obtainable by reacting a glycol such as 1,4-butanediol, 1,6-hexanediol or diethylene glycol with diphenyl carbonate or phosgene.

The diisocyanate according to an exemplary embodiment of the present invention may be an aromatic diisocyanate, an aliphatic diisocyanate, a cyclized aliphatic diisocyanate, or a mixture thereof.

The aromatic diisocyanate may be 1,4-phenylene diisocyanate, 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, 2,2-methylenediphenylene diisocyanate, 2,4'- Diisocyanate, 4,4'-methylenediphenylene diisocyanate, naphthalene diisocyanate, or a mixture thereof may be used.

The aliphatic diisocyanate or the cyclic aliphatic diisocyanate may be cyclohexane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, H12 MDI, or the like.

The diol may be selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,3-butanediol, 1,4-butanediol, 2-methyl Pentanediol, 1,5-pentanediol, 1,6-hexanediol, 1,4-cyclohexanediol, 1,4-cyclohexanedimethanol, neopentyl glycol or a mixture thereof.

The catalyst according to an exemplary embodiment of the present invention may use a tertiary amine series or an organometallic compound. As the tertiary amine series catalyst, triethylamine, dimethylcyclohexylamine, N-methylmorpholine, N, N'-dimethylpiperazine, 2- (dimethylaminoethoxy) ethanol or diazabicyclo 2) -octane. Examples of the organic metal compound include tin diacetate, tin dioctoate, tin dilaurate, and dibutyl tin dilaurate. The catalyst mainly used is an organometallic compound alone or a mixture thereof.

As a polymerization method of the thermoplastic polyurethane resin according to an example of the present invention, there may be employed a method using a batch reactor or a method using a continuous reaction extruder.

The method using the batch type reactor is a method in which reactants are fed into a reactor to react to a predetermined level and then discharged and further heat-treated to complete the reaction. In the method using the continuous type reaction extruder, And the reaction is completed in the extruder.

Compared with the batch type reactor, polymerization using a continuous reaction extruder is superior in quality uniformity due to uniform heat transfer and the like. Recently, a continuous type extruder has been widely used.

When a thermoplastic polyurethane resin is produced using a continuous reaction extruder, the temperature of the extruder is preferably 150 to 250 캜, more preferably 170 to 210 캜.

In general, it is preferred to use an ether-based thermoplastic polyurethane resin for applications requiring a high resistance to hydrolysis, although the light fastness, lightfastness and chlorine resistance are somewhat lowered, and excellent hydrolysis resistance and anti-bacterial properties are somewhat deteriorated. However, excellent mechanical properties and abrasion resistance are required It is preferable to use an ester-based thermoplastic polyurethane resin for the purpose of use, and it is highly desirable to use a carbonate-based thermoplastic polyurethane resin for applications requiring excellent light resistance although the cold resistance and the economical efficiency are somewhat lowered.

The thermoplastic polyurethane resin according to an embodiment of the present invention preferably has a melt index (190 DEG C, load 21.6 Kg) of 1 to 50 g / 10 min, preferably 5 to 30 g / 10 min. Minute, the extrusion processability may deteriorate. On the other hand, if it exceeds 50 g / 10 min, the mechanical properties may be poor.

The hardness of the thermoplastic polyurethane resin according to one example of the present invention is preferably 50 A or more and 80 D or less based on Showa hardness, more preferably 70 A or more and 60 D or less. When the hardness is less than 50A, it is advantageous in terms of flexibility, but it is difficult to secure heat resistance and blocking resistance between the yarns. On the other hand, when the hardness exceeds 80D, it is advantageous to secure heat resistance and blocking property between the yarns, but it may be difficult to secure flexibility.

The non-halogen flame retardant according to an exemplary embodiment of the present invention may be a phosphorus flame retardant, a nitrogen flame retardant, an inorganic flame retardant, or a mixture thereof.

Examples of the phosphorus flame retardant include phosphate flame retardants, phosphonate flame retardants, phosphinate flame retardants, phosphine oxides, phosphazenes, and mixtures thereof, among which phosphoric flame retardants are preferably used .

Specifically, the phosphate flame retardant is selected from the group consisting of trimethyl phosphate, triethyl phosphate, triphenyl phosphate, tricresyl phosphate, cresyldiphenyl phosphate, cresyldi-2,6-zyrenyl phosphate, isodecyl diphenyl phosphate, P-tert-butylphenyldiphenylphosphate, di-p-tert-butylphenyldiphenylphosphate, polyaluminum phosphate or mixtures thereof.

Examples of the nitrogen-based flame retardant include melamine, melamine cyanurate, melamine phosphate, melamine polyphosphate, melamine borate, triphenylisocyanurate, melamine pyrophosphate, and mixtures thereof. Among them, melamine cyanurate or melamine It is better to use phosphate.

The inorganic flame retardant may be magnesium hydroxide, magnesium oxide, aluminum hydroxide, calcium hydroxide, hydro-magneite, hydrotalcite, hunting or a mixture thereof, among which magnesium hydroxide or aluminum hydroxide is preferably used.

Such an inorganic flame retardant may be used in an untreated state, or a surface treated with a higher fatty acid such as stearic acid, oleic acid or palmitic acid, phosphoric acid, silane, amino silane, vinyl silane, or a mixture thereof.

The average particle diameter of the inorganic flame retardant is preferably 0.01 to 5 mu m, more preferably 0.05 to 2 mu m. When the average particle diameter is less than 0.01 탆, the flame retardancy and the heat resistance are very preferable, but the dispersion is too difficult. Therefore, there is a fear that the mechanical properties are deteriorated due to the development of the intergranular bundle, and when the average particle diameter is more than 5 탆,

In the flame-retardant thermoplastic polyurethane resin composition according to an example of the present invention, the amount of the non-halogen flame retardant added is preferably 10 to 50% by weight, more preferably 15 to 40% by weight, and more preferably 20 to 35% by weight, % Is most preferable. If the addition amount is less than 10% by weight, it is difficult to secure the desired flame retardancy, and if it exceeds 50% by weight, the mechanical properties may be poor.

The non-halogen flame retardant according to one embodiment of the present invention is more preferably used by mixing two or more of them, rather than using one alone. As a result of the synergistic action between the two kinds of flame retardants, an expandable char layer is formed to suppress the divergence of oxygen and heat. Therefore, the flame retardancy is increased and the flaking phenomenon (drift) is improved.

Particularly, when the phosphorus-based flame retardant and the nitrogen-based flame retardant are used in combination, the effect of the phosphorus-based flame retardant / nitrogen-based flame retarder mixture is preferably 10 to 90 to 90/10, more preferably 30 to 70 to 70 / 30 is preferable.

Further, in the case of a mixture in which the inorganic flame retardant is partially added to the phosphorus flame retardant / nitrogen flame retardant mixture, the flame retardancy due to the suppression of the dripping is further improved and at the same time, anti- The addition amount of the flame retardant is preferably 10 to 100 parts by weight, more preferably 15 to 80 parts by weight, based on 100 parts by weight of the phosphorus flame retardant / nitrogen flame retardant mixture.

Further, in one example of the present invention, the flame-retardant thermoplastic polyurethane resin composition may further include a non-halogen secondary flame retardant. The non-halogen secondary flame retardant may be zinc borate, antimony trioxide, magnesium oxide or talc, etc. In this case, 100 parts by weight of the non-halogen flame retardant may be used as a non-halogen auxiliary The flame retardant is preferably added in an amount of 5 to 30 parts by weight.

In one embodiment of the present invention, the flame-retardant thermoplastic polyurethane resin composition may further comprise a UV-blocking agent.

In the case of curtains, blinds, etc., among the target fabrics of the present invention, ultraviolet shielding property is usually required. In this case, a desired ultraviolet shielding property can be secured by adding a part of the ultraviolet shielding agent to the flame retardant thermoplastic polyurethane resin composition.

Examples of the ultraviolet shielding agent include ultraviolet absorbers such as benzophenone and benzotriazole; quenchers such as organic nickel compounds; radical scavengers (e.g., Tinuvin 770, Chimassorb 944, Hisorb 770, etc.) , Zinc oxide, and cerium oxide. These inorganic particles may be used singly or in combination. In view of synergistic effect, they are preferably used in combination.

The addition amount of the ultraviolet screening agent is preferably 0.001 to 3 parts by weight, more preferably 0.01 to 1 part by weight, and most preferably 0.1 to 0.5 parts by weight based on 100 parts by weight of the flame retardant thermoplastic polyurethane resin composition. If the addition amount is less than 0.001 parts by weight, desired ultraviolet barrier properties can not be obtained. If the addition amount exceeds 3 parts by weight, the mechanical properties may be deteriorated and the economical efficiency may deteriorate.

Further, in one example of the present invention, the flame-retardant thermoplastic polyurethane resin composition may further include an antibacterial agent.

Most of the fabrics desired in the present invention often require additional antibacterial properties. In this case, the antimicrobial agent may be partially added to the flame-retardant thermoplastic polyurethane resin composition to ensure desired antimicrobial activity.

Examples of the antimicrobial agent include natural antimicrobial agents such as urea-based, triazine-based, and aldehyde-based organic antibacterial agents, chitosan, amino glycoside compounds or Saururus chinensis extract, inorganic metal antibacterial agents that slowly release metal ions having antibacterial activity on an inorganic carrier, An inorganic antibacterial agent such as an organic-inorganic hybrid antibacterial agent which slowly releases a complex compound of an antibacterial metal or an organic antimicrobial agent. These inorganic antibacterial agents can be used singly or in combination.

The amount of the antibacterial agent added is preferably 0.001 to 3 parts by weight, more preferably 0.01 to 1 part by weight, and most preferably 0.1 to 0.5 parts by weight based on 100 parts by weight of the flame-retardant thermoplastic polyurethane resin composition. If the addition amount is less than 0.001 part by weight, the desired antimicrobial properties can not be obtained. If the amount is more than 3 parts by weight, the mechanical properties are deteriorated and the economical efficiency is deteriorated.

The flame-retardant thermoplastic polyurethane resin composition according to the present invention may further contain an antioxidant, a processing aid, a lubricant, a heat-resistant agent, a quencher, an inorganic filler, an antifouling agent, a dye, a pigment or a mixture thereof. At this time, the additive may be used in a range that does not substantially adversely affect physical properties according to the present invention.

The flame-retardant thermoplastic polyurethane resin composition according to an embodiment of the present invention preferably has a melt index (190 DEG C, load 21.6 kg) of 1 to 50 g / 10 min, preferably 5 to 30 g / 10 min. / If it is less than 10 minutes, extrusion processability may deteriorate. On the other hand, if it exceeds 50 g / 10 min, the mechanical properties may be poor.

The hardness of the flame-retardant thermoplastic polyurethane resin composition according to one embodiment of the present invention is preferably 50 A or more and 80 D or less, more preferably 70 A or more and 60 D or less, based on Showa hardness. When the hardness is less than 50A, it is advantageous in terms of flexibility, but it is difficult to secure heat resistance and blocking property between the yarns. On the other hand, when the hardness exceeds 80D, heat resistance and blocking property between the yarns are advantageous.

In addition, the flame-retardant thermoplastic polyurethane resin composition according to an embodiment of the present invention includes a thermoplastic polyurethane resin and a non-halogen flame retardant, or a mixed composition further comprising a non-halogen auxiliary flame retardant, an ultraviolet screener, an antibacterial agent, an additive, Can be kneaded and dispersed by kneading and dispersing in a single screw extruder, a twin-screw extruder, a mixing roll, a chestnut mixer or a kneader. In consideration of melt-kneadability and productivity, a two-screw extruder is most preferably used Do. At this time, the non-halogen flame retardant can be effectively dispersed in the thermoplastic polyurethane resin by performing at a temperature not lower than the melting point of the thermoplastic polyurethane resin.

Next, the core component according to one example of the present invention will be described.

The core component may be a polyester resin, a polyamide resin or a polyolefin resin. At this time, the number average molecular weight of the resin of the core component may be 10,000 to 200,000.

At this time, each resin is a non-drawn filament obtained by melt-spinning a polyester resin, a polyamide resin or a polyolefin resin at a temperature above the melting point of the resin, extruding it through a spinneret and cooling and solidifying it, And the like.

The polyester resin according to an example of the present invention is a polymer having an ester bond and is a homopolymer or a copolymer obtained by a condensation reaction of a dicarboxylic acid (or an ester derivative) with a diol, and may include an aliphatic polyester and an aromatic polyester have. Specifically, polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, or polyethylene naphthanate can be used, and among them, polyethylene terephthalate is most preferably used.

The polyamide resin according to an example of the present invention is a polymer having an amide bond and is a homopolymer or copolymer obtained by polycondensation of a diamine with a dicarboxylic acid or? -Amino-? 'Carboxylic acid, ring-opening polymerization of a cyclic lactam, And may include aliphatic polyamides, aromatic polyamides, or aliphatic cyclic polyamides. Specifically, nylon 6, nylon 6,6, nylon 6,10 or nylon 4,6 can be used, and among them, nylon 6 or nylon 6,6 is most preferably used.

The polyolefin resin according to an embodiment of the present invention is a homopolymer or copolymer obtained by polymerization of an olefin monomer such as propylene, ethylene, ethylene vinyl acetate or styrene in the presence of a catalyst such as a Ziegler-Natta catalyst, a metallocene catalyst or a chromium catalyst, Aliphatic polyolefins and aromatic polyolefins. Specifically, polypropylene, polyethylene, polyethylene vinyl acetate, polystyrene or the like can be used, and among them, polypropylene is most preferably used.

The method of manufacturing the cis-core type non-halogen flame-retarded composite yarn according to an exemplary embodiment of the present invention can be roughly divided into two methods.

The first method is coextrusion to produce a cis-core type composite yarn. For example, a flame-retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant is used as a sheath component in a melt-spinning facility equipped with two extruders, and a polyester resin, a polyamide resin or a polyolefin The drawn yarn can be manufactured by using a resin to produce an undrawn yarn by melt spinning and cooling and solidifying it, or by winding it through a stretching and heat treatment process.

More specifically, it is possible to control the temperature of the extruder and the spinneret in consideration of the viscosity or melt index in a temperature range of 10 to 50 DEG C or more of the melting point of the resin selected as the core component of the target composite yarn, In the case of the thermoplastic polyurethane resin composition, it is also possible to adjust the temperature of the extruder and the spinneret in consideration of the melt index in a temperature range of 10 to 50 占 폚 or more relative to the melting point.

A variety of fibers can be produced according to the winding speed in the extrusion spinning stage. The winding speed is preferably from 2,000 to 3,500 m / min, and the partially-oriented yarn (POY) after the spinning is produced It may be used as it is, but it may be difficult to secure desired mechanical properties. Therefore, it is more preferable that the cis-core type partially oriented yarn after the above-mentioned spinning step is subjected to the stretching step to further orient the molecules, crystallize and homogenize the fibers to secure the fibers having desired excellent mechanical properties. In the above stretching step, the stretching ratio is preferably 1.5 to 2.0 times, and the stretching speed is preferably 700 to 1,500 m / min. When the stretching ratio is less than 1.5 times, the dimensional stability of the fiber structure is deteriorated. When the stretching ratio is more than 2.0 times, the stretching property may be deteriorated. When the stretching speed is less than 700 m / min, unevenness of fineness is caused and undrawn yarn is produced. When the stretching speed is more than 1,500 m / min, there is a great fear of cutting.

On the other hand, in the spinning step, spinning and stretching are performed together using a speed difference between godet rollers mounted on the spinning machine to obtain a drawn yarn. In the spinning step, spinning draw ratio (SDY) of 3.0 to 4.0 times and spinning speed of 4,000 to 4,500 m / min is preferably produced. When the stretching ratio is less than 3.0 times, the morphological stability due to the non-uniform stretching is deteriorated. When the stretching ratio is more than 4.0 times, the stretchability is deteriorated, which causes defects and is not preferable. At a winding speed of less than 4,000 m / min, the elongation is deteriorated. When the winding speed is more than 4,500 m / min, there is a great fear of cutting. It is also possible to enhance the dimensional stability of the fibers obtained through an additional heat treatment process.

The second method is a process for producing a cis-core type non-halogen flame retardant composite yarn obtained by using a polyester yarn, a polyamide yarn or a polyolefin yarn as a core component and extrusion coating using a flame-retardant thermoplastic polyurethane resin composition as a sheath component have.

More specifically, the yarn preferably has a fineness of 100 to 3,000 denier and a tensile strength of 3 to 7 g / d. The yarn was placed in an extrusion coating machine in an inclined or weft direction in the coating direction of the extruder, and the yarn was passed through a die nozzle of the extruder, and the flame-retardant thermoplastic polyurethane resin composition prepared in the previous step was applied to the yarn in an amount of 50 to 500 mu m Is coated and wound to a thickness of 100 to 400 mu m. Preferably, the extrusion coater is an extruder equipped with a single screw, and the coating temperature range is preferably 10 to 50 ° C or more of the melting point of the flame-retardant thermoplastic polyurethane resin composition, and cutting may occur when the temperature is high . The coating speed is preferably 300 to 1,200 m / min. By subjecting to such extrusion coating, a cis-core type non-halogen flame retarding composite yarn can be produced.

The first method of the two methods of producing the cis-core type non-halogen flame retardant composite yarn is most preferable in the circular face, but it is difficult to control the process and quality, while the second method is easy to control the process and quality, There are disadvantages that are somewhat disadvantageous.

The cis-core type non-halogen flame retarding composite yarn obtained by the above method can be made into a fabric by weaving or knitting. In the case of weaving, the weaving can be made, for example, by weaving, weaving and tentering. The canning process refers to a process of winding a warp yarn (longitudinal yarn) on a beam to match the length, density, width, etc. of the designed fabric, and winding the yarn to a desired number of yarns and a desired length as necessary. Thereafter, weaving is performed using the lightweight fiber and the cis-core type non-halogen flame retarding composite yarn. The weaving process refers to a process of making a fabric by intersecting weft yarns at right angles to the warp yarns in an oblique one strand or two strands downward according to a certain rule. In this process, a desired pattern can be expressed. Next, the woven material is subjected to a tentering process to produce a fabric. The tenter process is one of the finishing process steps in the manufacture of fabrics, and is a process for fixing the width constantly using a tenter machine. The temperature of the tenter can be raised and fixed to 100 to 250 ° C in a situation where both sides of the fabric are held by pins or clips in the tenter to keep a certain width in the weft direction.

Such fabrics may be used for curtains, blinds, wallpaper, carpets, flooring, bedding, car seats, sofa fabrics, table fabrics, furniture fabrics, ceiling materials, automotive interiors, It can be used as a paper.

As described above, the cis-core type non-halogen flame retarding composite yarn according to the present invention is an environmentally friendly and excellent flame retardant yarn using non-halogen flame retardant, and is a breakthrough fiber having properties suitable for various interior fabrics. It is expected to be very useful for curtains, blinds, wallpaper, carpets, flooring, bedding, car seats, sofa fabrics, table fabrics, furniture fabrics, ceiling materials, automobile interior materials, cruise liners, bag fabrics and the like.

The present invention will be described in more detail with reference to the following examples. However, the following examples are only illustrative of the present invention, but the present invention is not limited thereto.

Melt index (MI), hardness and UL flame retardancy grade were evaluated for resin or resin composition specimens prepared according to the following examples and comparative examples and tensile strength, elongation, flame retardancy (limit oxygen index , Smoke density, toxicity index), daylight fastness and antibacterial activity were evaluated as follows.

1. Melt Index (MI)

The melt index (g / 10 min) was measured according to ASTM D1238 as a measure of melt flowability for resin and resin composition specimens.

2. Hardness

Shaw hardness was measured according to ASTM D2240 as a measure of flexibility for resin and resin composition specimens.

3. Fiber tensile strength and elongation

Tensile strength (g / d) and elongation (%) were measured according to ASTM D3822 as a measure of mechanical properties for the fiber specimens.

4. Flammability

(1) UL Flammability Rating

As a measure of flame retardancy for resin composition specimens, the flame retardancy was measured using a specimen having a width of 12.7 mm, a length of 127 mm, and a thickness of 1 mm by UL 94 rod vertical combustion test method. It is judged that the V-0 grade is good, the V-1 grade is good, the V-2 grade is good, and the below is not acceptable.

(2) The limit oxygen index (LOI)

The limit oxygen index (minimum oxygen concentration required for continued combustion of the specified material at room temperature) according to ISO 4589-2 was measured as a measure of flame retardancy for fabric specimens. 35 or more is extremely excellent, less than 35 is excellent, 30 or more is excellent, less than 30 is good, 28 or more is good, less than 28 is more than 25,

(3) Density of smoke (Ds)

As a measure of flame retardancy for fabric specimens, the smoke density after 4 minutes according to ASTM E 662 (Ds) Ds (4 min) was measured by measuring the amount of smoke generated when the sample was burned, using the light transmittance change. If the value is below 100, it is excellent. If it is below 100, it is excellent. If it is below 150, it is good. If it is above 200, it is normal.

(4) Toxicity index (R)

CO 2 , CO, HF, HCl, HBr, HCN, NO 2, and SO 2 ) produced by combustion of the prescribed samples were measured according to BS 6853 Annex B.2 as a measure of flame retardancy for fabric specimens. The concentration, R, was compared with the reference value. 1.6 or more is excellent, 1.6 or more is 2.0 or more, 2.0 or more is good or less than 3.2, 3.2 or more is usually 5.0 or more, 5.0 or more is judged to be poor.

5. Daylight fastness

Daylight fastness was measured according to ISO 105 B02: 2000 as a measure of UV resistance to fabric specimens. Grade 8 is extremely good, grade 7 is excellent, grade 6 is good, grade 5 is normal, grade 4 or below is considered bad.

6. Antimicrobial activity

Staphylococcus aureus ATCC 6538 and klebsiella pneumoniae ATCC 4352 were tested as test strains according to the KS K 0693-2011 test method as a measure of antimicrobial activity against fabric samples, The percent decrease of the rod bacterium was calculated. 99.9% or more is excellent, 99.9% or less is 99.0% or more is excellent, less than 99.0% is 98.0% or more is good, less than 98.0% is 95.0% or more is normal, and less than 95.0% is poor.

[Example 1]

First, 62.89 parts by weight of poly (ethylene adipate) (number average molecular weight: 2,000), 31.45 parts by weight of 4,4'-methylene diphenyl diisocyanate (weight average molecular weight: 5.66 parts by weight of 1,4-butanediol and 150 parts by weight of a dibutyltin dilaurate catalyst were fed into a flask under a reaction temperature of 190/200/220/210 占 폚 and a screw rotation speed of 300 rpm, ) 15 (g / 10 min) and an ester-based thermoplastic polyurethane resin (TPU-A) having a hardness of 88 A were polymerized. The thermoplastic polyurethane resin polymerized in the reaction extruder was pelletized using a pelletizer and dried at 70 ° C for 5 hours using a dehumidifying dryer. In addition, 3- (hydroxyphenylphosphinyl) propionic acid (HIRETAR-205, PF-A, manufactured by Kolon Industries), which is one of the phosphorus flame retardants, was prepared. 100 parts by weight of the TPU-A and 40 parts by weight of PF-A were added to a twin-screw extruder having a diameter of 65 mm and an L / D of 40 and kneaded and dispersed at a cylinder temperature of 200 ° C to obtain MI (190 ° C, 21.6 kg) / 10 minutes) of flame retardant thermoplastic polyurethane resin composition (1). The resulting flame-retardant thermoplastic polyurethane resin composition (1) was injection molded from an injection molding machine, and its hardness and UL flame retardancy were evaluated. As a result, hardness was Showa 85A and UL rating was V-0.

A polyethylene terephthalate resin pellet (Kolon Industries, PET-A) having an intrinsic viscosity of 0.65 dl / g, which is one of the polyester resins, was also prepared.

The above flame-retardant thermoplastic polyurethane resin composition (1) was used as a sheath component in a melt-spinning facility equipped with two extruders, and melt-spun under the condition that the sheath cross-sectional area ratio was 30% using the PET-A as a core component Core-type non-halogen flame retarding composite yarn (1) was prepared by stretching a partially drawn yarn at a winding speed of 3,000 m / min and then drawing it with a normal drawing machine at a draw ratio of 1.9 and a draw speed of 850 m / The fiber tensile strength and elongation were evaluated and are shown in Table 1. The obtained cis-core type non-halogen flame retarding composite yarn (1) was warp and wound, and then weighed in a 1.6m-wide net structure and then subjected to a tentering process at 170 ° C to obtain a fabric specimen. Are shown in Table 1.

division Composition (parts by weight) Sheath cross section ratio (%) Properties Core component Sis component The tensile strength
(g / d) Shindo
(%) Flammability LOI Ds (4 min) R Example 1 PET-A 100 TPU-A 100
PF-A 40 30 4.8 55 30 115 1.5 Example 2 PET-A 100 TPU-A 100
PF-A 20
NF-A 20 30 4.7 57 37 87 1.3 Example 3 PET-A 100 TPU-A 100
PF-B 25
NF-A 10
MDH 10 40 4.3 51 39 65 1.0 Example 4 PET-A 100 TPU-B 100
PF-B 30
NF-B 10 30 4.6 54 35 92 1.3 Example 5 NYLON-A 100 TPU-A 100
PF-B 25
NF-A 10 35 5.5 52 33 104 1.4 Example 6 PP-A 100 TPU-B 100
PF-A 15
NF-B 15
ATH 10 45 5.2 50 34 100 1.2 Comparative Example 1 PET-A 100 PET-A 100
DBDPO 8 30 5.8 31 27 156 11.9 Comparative Example 2 PET-A 100 PET-A 100
PF-B 25
NF-A 10
MDH 10 40 2.4 19 26 255 4.7

[Example 2]

First, melamine cyanurate (SunFla MC-100, NF-A) was prepared as a nitrogen-based flame retardant. 20 parts by weight of PF-A and 20 parts by weight of NF-A were kneaded and dispersed with respect to 100 parts by weight of TPU-A to prepare a flame-retardant thermoplastic polyurethane resin composition of MI (190 DEG C, 21.6 kg) 23 (g / (2). The hardness and UL flame retardancy of the obtained flame-retardant thermoplastic polyurethane resin composition (2) were evaluated. As a result, the hardness was Shore 83 A and the UL rating was V-0. The procedure of Example 1 was repeated except that the flame-retardant thermoplastic polyurethane resin composition (2) was used as a sheath component to prepare a sheath-core type non-halogen flame retarding composite yarn (2). The results are shown in Table 1.

[Example 3]

First, triphenylphosphate (Ferro Co., PF-B) was prepared as a phosphorus flame retardant, and magnesium hydroxide (Kyowa Chemical Co., Ltd. KISUMA 5-C, MDH) having 0.9 m as an inorganic flame retardant was prepared. A composition obtained by mixing 25 parts by weight of PF-B, 10 parts by weight of NF-A and 10 parts by weight of MDH with respect to 100 parts by weight of TPU-A was kneaded and dispersed to prepare a flame retardant flame retardant having a flame retardancy of 18 (g / 10 min) To obtain a thermoplastic polyurethane resin composition (3). The hardness and the UL flame retardancy grade of the obtained flame retardant thermoplastic polyurethane resin composition (3) were evaluated. As a result, the hardness was 89 A in Showa, and the UL rating was V-0. A flame retardant thermoplastic polyurethane resin composition (3) was used as a sheath component and a sheath-core type non-halogen flame retarding composite yarn (3) having a sheath sectional area ratio of 40% was produced in the same manner as in Example 1, The results are shown in Table 1.

[Example 4]

First, 61.72 parts by weight of poly (tetramethylene) glycol (number average molecular weight 1,000), 32.72 parts by weight of 4,4'-methylene diphenyl diisocyanate was added to the reaction extruder (Werner & Pfleiderer twin screw extruder) 5.56 parts by weight of 1,4-butanediol and 145 parts by weight of a dibutyltin dilaurate catalyst were fed into a flask under the conditions of a reaction temperature of 190 to 220 캜 and a screw rotation speed of 300 rpm to produce 18 (g / 10 min ), An ether-based thermoplastic polyurethane resin (TPU-B) of Hardness Sho 91A was polymerized. The thermoplastic polyurethane resin polymerized in the reaction extruder was made into a pellet form using a pelletizer and was used at 70 ° C for 5 hours using a dehumidifying dryer. 30 parts by weight of PF-B and 10 parts by weight of NF-A were kneaded and dispersed with respect to 100 parts by weight of TPU-B to prepare a flame retardant thermoplastic polyurethane resin composition of MI (190 캜, 21.6 Kg) 22 (g / 4). The hardness and the UL flame retardancy grade of the obtained flame retardant thermoplastic polyurethane resin composition (4) were evaluated. As a result, the hardness was Showa 88A, UL rating was V-0, and the flame retardancy was excellent. A flame retardant thermoplastic polyurethane resin composition (4) was used as a sheath component to prepare a cis-core type non-halogen flame retarding composite yarn (4). The results are shown in Table 1.

[Example 5]

First, a nylon 6 resin (Kolon Industries, NYLON-A) having a relative viscosity of 3.5, which is one of the polyamide resins, was prepared. 25 parts by weight of PF-B and 10 parts by weight of NF-A were kneaded and dispersed with respect to 100 parts by weight of TPU-A to prepare a flame-retardant thermoplastic polyurethane resin composition of MI (190 DEG C, 21.6 kg) 19 (g / (5). The hardness and the UL flame retardancy grade of the obtained flame retardant thermoplastic polyurethane resin composition (5) were evaluated. As a result, the hardness was Shore 82A, UL rating was V-0, and the flame retardancy was excellent. A flame retardant thermoplastic polyurethane resin composition (5) was used as a sheath component, NYLON-A was used as a core component, and a sheath cross-sectional area ratio was set to 35%. . The results are shown in Table 1. < tb > < TABLE >

[Example 6]

First, a polypropylene homopolymer (PP-A) of 25 (g / 10 min) MI (230 DEG C, 2.16 Kg), which is one of the polyolefin resins, was prepared. Aluminum hydroxide (Henan Kingway Chemicals, H-WF, ATH) having an average particle diameter of 1.5 占 퐉 was prepared as an inorganic flame retardant. A composition obtained by mixing 15 parts by weight of PF-A, 15 parts by weight of NF-B and 10 parts by weight of ATH with respect to 100 parts by weight of TPU-B was kneaded and dispersed to prepare a flame retardant flame retardant having an MI (190 DEG C, 21.6 Kg) To obtain a thermoplastic polyurethane resin composition (6). The hardness and the UL flame retardancy grade of the obtained flame retardant thermoplastic polyurethane resin composition (6) were evaluated, and as a result, the hardness was Shore 93A, UL rating was V-0, and the flame retardancy was excellent. A flame-retardant thermoplastic polyurethane resin composition (6) was used as a sheath component, and the sheath-core type non-halogen flame retarding composite yarn (6) was produced using PP-A as a core component and a sheath sectional area ratio of 45% . The results are shown in Table 1. < tb > < TABLE >

[Comparative Example 1]

First, decabromodiphenyl oxide (ICL Industrial, DBDPO) was prepared as a halogen-based flame retardant. Core flame retardant composite yarn (C1) having a flame-retardant thermoplastic polyester resin composition (C1) as a sheath component was prepared by kneading and dispersing a composition prepared by mixing 8 parts by weight of DBDPO with 100 parts by weight of PET-A. 1, and the results are shown in Table 1. < tb > < TABLE >

[Comparative Example 2]

25 parts by weight of PF-B, 10 parts by weight of NF-A and 10 parts by weight of MDH were kneaded and dispersed in 100 parts by weight of PET-A to prepare a flame-retardant thermoplastic polyester resin composition (C2) Core type flame retardant composite yarn (C2) was prepared in the same manner as in Example 1. The results are shown in Table 1.

[Example 7]

First, a polyethylene terephthalate fiber yarn (Huvis, PET-FA) having a fineness of 230 denier and a tensile strength of 5.7 g / d was prepared as a polyester yarn. The flame-retardant thermoplastic polyurethane resin composition (1) was applied to the yarn at a coating temperature of 200 ° C, while the yarn was passed through a die nozzle of an extruder in an oblique direction in the coating direction of the extruder, Core type non-halogen flame retarding composite yarn (7) was prepared by coating with a sheath sectional area ratio of 35% under a condition of a speed of 1,000 m / min and winding, and the tensile strength and elongation of the fiber were evaluated and shown in Table 2 . The obtained cis-core type non-halogen flame retarding composite yarn (7) was warp and wound, and then woven into a net structure having a width of 1.6 m and then subjected to a tentering process at 170 ° C. to obtain a fabric specimen. Are shown in Table 2.

division Composition (parts by weight) Sheath cross section ratio (%) Properties Core component Sis component The tensile strength
(g / d) Shindo
(%) Flammability LOI Ds (4 min) R Example 7 PET-FA 100 TPU-A 100
PF-A 40 35 4.5 57 32 109 1.4 Example 8 PET-FA 100 TPU-A 100
PF-A 20
NF-A 20 45 4.1 52 38 76 1.2 Example 9 PET-FA 100 TPU-A 100
PF-B 25
NF-A 10
MDH 10 60 3.9 63 41 25 0.8 Example 10 PET-FA 100 TPU-B 100
PF-B 30
NF-B 10 40 4.0 55 36 82 1.1 Example 11 NYLON-FA 100 TPU-A 100
PF-B 25
NF-A 10 45 5.1 47 37 84 1.4 Example 12 PP-FA 100 TPU-B 100
PF-A 15
NF-B 15
ATH 10 55 4.3 57 42 21 0.7 Comparative Example 3 PET-FA 100 TPU-A 100
PF-B 25
NF-A 10
MDH 10 8 5.3 54 18 305 6.9 Comparative Example 4 PET-FA 100 TPU-A 100
PF-B 25
NF-A 10
MDH 10 95 1.9 21 51 15 0.3 Comparative Example 5 PET-FA 100 PVC 100
DOP 40
Sb 2 O 3 4
Ca-Zn 3 60 2.2 49 25 285 8.7

[Example 8]

The flame-retardant thermoplastic polyurethane resin composition (2) was extrusion-coated on the yarn PET-FA so that the sheath area ratio became 45%, thereby obtaining a cis-core type non-halogen flame retarding composite yarn (8) And the results are shown in Table 2. < tb > < TABLE >

[Example 9]

The flame retardant thermoplastic polyurethane resin composition (3) was extrusion-coated on the yarn PET-FA to have a sheath area ratio of 60% to produce a cis-core type non-halogen flame retarding composite yarn (9) And the results are shown in Table 2. < tb > < TABLE >

[Example 10]

The flame-retardant thermoplastic polyurethane resin composition (4) was extrusion-coated on the yarn PET-FA to have a sheath area ratio of 40% to prepare a sheath-core type non-halogen flame retarding composite yarn 10 And the results are shown in Table 2. < tb > < TABLE >

[Example 11]

First, a nylon 6 fiber yarn (Kolon Industries, NYLON-FA) having a fineness of 180 denier and a tensile strength of 5.8 g / d was prepared as a polyamide yarn. The flame retardant thermoplastic polyurethane resin composition (5) was extrusion-coated on the yarn NYLON-FA to have a sheath area ratio of 45% to prepare a cis-core type non-halogen flame retarding composite yarn (11) And the results are shown in Table 2. < tb > < TABLE >

[Example 12]

First, a polypropylene fiber yarn (Pyunghwa Industrial, PP-FA) having a fineness of 190 denier and a tensile strength of 5.9 g / d was prepared as a polyolefin yarn. The flame-retardant thermoplastic polyurethane resin composition (6) was extrusion-coated on the yarn PP-FA to have a sheath area ratio of 55% to prepare a sheath-core type non-halogen flame retarding composite yarn (12) And the results are shown in Table 2. < tb > < TABLE >

[Comparative Example 3]

The flame retardant thermoplastic polyurethane resin composition (3) was extrusion-coated on the yarn PET-FA so that the cis cross-sectional area ratio became 8% to obtain a cis-core type non-halogen flame retarding composite yarn (C3) And the results are shown in Table 2. < tb > < TABLE >

[Comparative Example 4]

The flame retardant thermoplastic polyurethane resin composition (3) was extrusion-coated on the yarn PET-FA so that the cis cross-sectional area ratio was 95%, thereby producing a cis-core type non-halogen flame retarding composite yarn (C4) And the results are shown in Table 2. < tb > < TABLE >

[Comparative Example 5]

First, 40 parts by weight of dioctyl terephthalate (LG Chem, DOP) was added to 100 parts by weight of a polyvinyl chloride resin (PVC) having a degree of polymerization of 1000 ± 100 and 4 parts by weight of antimony trioxide (anionic antimony, Sb 2 O 3 ) And 3 parts by weight of a Ca-Zn heat stabilizer (Monosque Industrial CZ-313) were kneaded and dispersed, and an extrusion-coated cis-isocyanate-based flame retardant thermoplastic resin composition (C3) Except that the core type flame retardant composite yarn (C5) was produced in the same manner as in Example 7. The results are shown in Table 2.

[Example 13]

First, benzophenone (ChangFeng Chemical Co., BP) and Tinuvin-770 (BASF, T-770) were prepared as ultraviolet blocking agents. 20 parts by weight of PF-A, 20 parts by weight of NF-A, 0.02 parts by weight of BP and 0.03 part by weight of T-770 were kneaded and dispersed in 100 parts by weight of TPU-A to prepare MI (190 DEG C, 21.6 kg) g / 10 minutes) of flame retardant thermoplastic polyurethane resin composition (7). The hardness and the UL flame retardancy grade of the obtained flame retardant thermoplastic polyurethane resin composition (7) were evaluated. As a result, the hardness was Shore 90A, UL rating was V-0, and the flame retardancy was excellent. Core type non-halogen flame retarding composite yarn (13) produced by melt-spinning using the flame-retardant thermoplastic polyurethane resin composition (7) as a sheath component and using the PET-A as a core component with a sheath sectional area ratio of 35% ) Was prepared in the same manner as in Example 1, and the results are shown in Table 3. < tb >< TABLE >

division Composition (parts by weight) Sheath cross section ratio (%) Properties Core component Sis component Seal
burglar
(g / d) Shindo
(%) Flammability Light fastness Antimicrobial activity LOI Ds (4 min) R Glucose shedding rate
(%) Reduction rate of pneumonia
(%) Example 13 PET-A TPU-A 100
PF-A 20
NF-A 20
BP 0.02
T-770 0.03 35 4.7 60 37 87 1.3 8th grade - - Example 14 PET-FA TPU-A 100
PF-A 20
NF-A 20
BP 0.02
T-770 0.03
AB-A 0.05 40 4.4 62 36 91 1.5 8th grade > 99.9 > 99.9

[Example 14]

First, particles of synthetic zeolite carrier having an average particle size of 0.2 mu m (Pak TEKHEK, product of Fuji Chemical Co., Ltd., AB-A) were prepared as antibacterial agents. 20 parts by weight of PF-A, 20 parts by weight of NF-A, 0.02 parts by weight of BP, 0.03 part by weight of T-770 and 0.05 part by weight of AB-A were mixed and dispersed in 100 parts by weight of TPU-A to obtain MI ° C., 21.6 kg) of 15 (g / 10 min) was obtained in the same manner as in Example 1, except that the flame retardant thermoplastic polyurethane resin composition (8) The hardness and UL flame retardancy of the obtained flame-retardant thermoplastic polyurethane resin composition (8) were evaluated. As a result, the hardness was Shore 91A and the UL rating was V-0. Core type non-halogen flame retarding composite yarn (14) by extrusion coating, using the above-mentioned flame-retardant thermoplastic polyurethane resin composition (8) as a sheath component and using the yarn PET- ) Was prepared in the same manner as in Example 7, and the results are shown in Table 3.

As can be seen from Examples 1 to 6, the cis-core type non-halogen flame retarding composite yarn according to the present invention has excellent mechanical properties and excellent flame retardancy. On the other hand, in the case of a cis-core type halogen flame retardant composite yarn obtained by melt-spinning a polyester using a bromine-based flame retardant as a sheath component as in Comparative Example 1, LOI and Ds (4 min) were lower than those of the flame retarding composite yarn according to the present invention It can be seen that the index is extremely poor. Further, in the case of the cis-core type halogen flame retardant composite yarn obtained by fusion-spinning the non-halogen polyester as a sheath component as in Comparative Example 2, the mechanical properties are poor and the flame retardancy is insufficient.

As can be seen from Examples 7 to 12, the cis-core type non-halogen flame retardant composite yarn by extrusion coating according to the present invention has excellent mechanical properties and excellent flame retardancy. On the other hand, when the ratio of the sheath cross-sectional area is too small as in Comparative Example 3, the mechanical properties are excellent but it is difficult to secure the desired flame retardancy. When the cross-sectional area ratio is excessively high as in Comparative Example 4, the flame retardancy is extremely excellent but the mechanical properties are extremely poor. Also, as in Comparative Example 5, the cis-core type halogen-flame retardant composite yarn in which flame retardant PVC was extrusion-coated with a sheath component had insufficient mechanical properties and LOI and Ds (4 min) were lower than that of the composite yarn according to the present invention. It is very bad.

As can be seen from Examples 13 and 14, in the case of a cis-core type non-halogen flame retardant composite yarn obtained by melt-spinning or extrusion coating using a flame-retardant thermoplastic polyurethane resin composition that further prescribes an ultraviolet screening agent, It can be seen that not only the physical properties and flame retardancy are excellent but also the ultraviolet barrier property and the antibacterial property are excellent.

As described above, the sheath component according to the embodiment of the present invention is a non-halogenated flame retardant-containing flame-retardant thermoplastic polyurethane resin composition, and the core component is any one selected from the group consisting of a polyester resin, a polyamide resin and a polyolefin resin. Blinds, wallpaper, carpets, flooring, bedding, car seats, sofa fabrics, table fabrics, furniture fabrics, and so on, as well as environmentally friendly and excellent flame retardancy, It can be very useful for textile materials such as ceiling materials, automobile interior materials, cruise ship interior materials, bag paper.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be clear to those who are.

Claims (32)

Core non-halogen flame-retardant composite yarn for a fabric, wherein the sheath component is a flame-retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant and the core component is a polyester resin, a polyamide resin or a polyolefin resin,
The sheath component has a cross-sectional area ratio of 25 to 60% and includes a flame retardant which is a phosphorus-based flame retardant, a nitrogen-based flame retardant or a mixture thereof,
The composite yarn has a tensile strength of 3.9 to 5.5 g / d and a smoke density of 21 to 115 Ds (4 min) according to ASTM E 662 measurement standard. An unstretched yarn obtained by co-extrusion using a flame-retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant as a sheath component, and using a polyester resin, a polyamide resin or a polyolefin resin as a core component, Core type non-halogen flame retarding composite yarn for a woven fabric, which is a stretch yarn obtained by stretching,
The sheath component has a cross-sectional area ratio of 25 to 60% and includes a flame retardant which is a phosphorus-based flame retardant, a nitrogen-based flame retardant or a mixture thereof,
The composite yarn has a tensile strength of 3.9 to 5.5 g / d and a smoke density of 21 to 115 Ds (4 min) according to ASTM E 662 measurement standard. A flame retardant thermoplastic polyurethane resin composition comprising a flame-retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant as a sheath component and a polyester yarn, a polyamide yarn or a polyolefin yarn as a core component, Core non-halogen flame retarding composite yarn obtained by extrusion coating a composition,
The sheath component has a cross-sectional area ratio of 25 to 60% and includes a flame retardant which is a phosphorus-based flame retardant, a nitrogen-based flame retardant or a mixture thereof,
The composite yarn has a tensile strength of 3.9 to 5.5 g / d and a smoke density of 21 to 115 Ds (4 min) according to ASTM E 662 measurement standard. 4. The compound according to any one of claims 1 to 3,
The thermoplastic polyurethane resin is a cis-core type non-halogen flame retarding composite yarn which is an ether type thermoplastic polyurethane resin, an ester type thermoplastic polyurethane resin, a carbonate type thermoplastic polyurethane resin or a mixture thereof. 4. The compound according to any one of claims 1 to 3,
Wherein the thermoplastic polyurethane resin has a melt index (190 占 폚, load: 21.6 kg) of 1 to 50 g / 10 min. 4. The compound according to any one of claims 1 to 3,
Core type non-halogen flame retarding composite yarn wherein the hardness of the thermoplastic polyurethane resin is 50 A or more and 80 D or less based on Shore hardness. 4. The compound according to any one of claims 1 to 3,
The non-halogen flame retardant further comprises an inorganic flame retardant. 4. The compound according to any one of claims 1 to 3,
Core-type non-halogen flame-retardant composite yarn, which is a phosphate flame retardant, a phosphonate flame retardant, a phosphinate-based flame retardant, a phosphine oxide, a phosphazene or a mixture thereof. 9. The method of claim 8,
Wherein the phosphate flame retardant is selected from the group consisting of trimethyl phosphate, triethyl phosphate, triphenyl phosphate, tricresyl phosphate, cresyl diphenyl phosphate, cres di di 2,6-xylyenyl phosphate, isodecyl diphenyl phosphate, isopropyl phenyl diphenyl phosphate , p-tert-butylphenyldiphenylphosphate, di-p-tert-butylphenyldiphenylphosphate, polyaluminum phosphate or mixtures thereof. 4. The compound according to any one of claims 1 to 3,
Wherein the nitrogen-based flame retardant is melamine, melamine cyanurate, melamine phosphate, melamine polyphosphate, melamine borate, triphenylisocyanurate, melamine pyrophosphate or a mixture thereof. 8. The method of claim 7,
Core type non-halogen flame retarding composite yarn wherein said inorganic flame retardant is magnesium hydroxide, magnesium oxide, aluminum hydroxide, calcium hydroxide, hydro-magneite, hydrotalcite, hunting or a mixture thereof. 8. The method of claim 7,
Core type non-halogen flame retarding composite yarn having an average particle diameter of 0.01 to 5 mu m. 4. The compound according to any one of claims 1 to 3,
The non-halogen flame retardant is a phosphorus-based flame retardant / nitrogen-based flame retarder mixture having a weight ratio of 10/90 to 90/10. 8. The method of claim 7,
The non-halogen flame retardant is a cis-core type non-halogen flame retarding composite yarn wherein the inorganic flame retardant is added in an amount of 10 to 100 parts by weight based on 100 parts by weight of a phosphorus flame retardant / nitrogen flame retardant mixture having a weight ratio of 10/90 to 90/10. 4. The compound according to any one of claims 1 to 3,
Wherein the non-halogen flame retardant is contained in an amount of 10 to 50 wt% of 100 wt% of the entire flame-retardant thermoplastic polyurethane resin composition. 14. The method of claim 13,
Wherein the non-halogen secondary flame retardant is further added in an amount of 5 to 30 parts by weight based on 100 parts by weight of the non-halogen flame retardant. 17. The method of claim 16,
The non-halogen auxiliary flame retardant is a cis-core type non-halogen flame retarding composite yarn which is zinc borate, antimony trioxide, magnesium oxide, talc or a mixture thereof. 4. The compound according to any one of claims 1 to 3,
The flame retardant thermoplastic polyurethane resin composition further comprises a ultraviolet screening agent. 19. The method of claim 18,
Wherein the ultraviolet shielding agent further comprises 0.001 to 3 parts by weight based on 100 parts by weight of the flame retardant thermoplastic polyurethane resin composition. 19. The method of claim 18,
Core type non-halogen flame retarding composite yarn wherein the ultraviolet shielding agent is an ultraviolet absorber, a radical scavenger, an inorganic particle or a mixture thereof. 4. The compound according to any one of claims 1 to 3,
The flame-retardant thermoplastic polyurethane resin composition further comprises an antimicrobial agent. 22. The method of claim 21,
Wherein the antibacterial agent further comprises 0.001 to 3 parts by weight based on 100 parts by weight of the flame-retardant thermoplastic polyurethane resin composition. 22. The method of claim 21,
The antibacterial agent may be an organic antimicrobial agent, a natural antimicrobial agent, an inorganic antibacterial agent, or a mixture thereof. 4. The compound according to any one of claims 1 to 3,
The flame-retardant thermoplastic polyurethane resin composition according to claim 1, wherein the flame-retardant thermoplastic polyurethane resin composition further comprises an additive which is an antioxidant, a processing aid, a lubricant, a heat resistant agent, a quencher, an inorganic filler, an antifouling agent, a dye, . 4. The compound according to any one of claims 1 to 3,
The flame-retardant thermoplastic polyurethane resin composition is a cis-core type non-halogen flame retarding composite yarn having a hardness of 50 A or more and 80 D or less based on Shore hardness. 4. The compound according to any one of claims 1 to 3,
Wherein said flame-retardant thermoplastic polyurethane resin composition has a melt index (190 占 폚, load: 21.6 kg) of 1 to 50 g / 10 minutes. delete delete A flame retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant as a sheath component is used and a polyester resin, a polyamide resin or a polyolefin resin is used as a core component to co- Core type non-halogen filament yarn for producing a drawn yarn by stretching or heat-treating the filament yarn,
The sheath component has a cross-sectional area ratio of 25 to 60% and includes a flame retardant which is a phosphorus-based flame retardant, a nitrogen-based flame retardant or a mixture thereof,
Wherein said composite yarn has a tensile strength of 3.9 to 5.5 g / d and a smoke density of 21 to 115 Ds (4 min) according to ASTM E 662 measurement standard. A flame retardant thermoplastic polyurethane resin composition comprising a flame-retardant thermoplastic polyurethane resin composition comprising a thermoplastic polyurethane resin and a non-halogen flame retardant as a sheath component, wherein a polyester yarn, a polyamide yarn or a polyolefin yarn is used as a core component, Core type non-halogen flame retarding composite yarn for extrusion-coating a composition,
The sheath component has a cross-sectional area ratio of 25 to 60% and includes a flame retardant which is a phosphorus-based flame retardant, a nitrogen-based flame retardant or a mixture thereof,
Wherein said composite yarn has a tensile strength of 3.9 to 5.5 g / d and a smoke density of 21 to 115 Ds (4 min) according to ASTM E 662 measurement standard. A fabric produced by weaving or knitting a cis-core type non-halogen flame retarding composite yarn according to any one of claims 1 to 3. 32. The method of claim 31,
The fabrics may be used for curtains, blinds, wallpaper, carpets, flooring, bedding, car seats, sofa fabrics, table fabrics, furniture fabrics, ceiling materials, automotive interiors, cruise liners, Woven fabrics.
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