CN114318589B - High-flame-retardance superfine sea-island yarn and preparation process thereof - Google Patents
High-flame-retardance superfine sea-island yarn and preparation process thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 81
- 239000003063 flame retardant Substances 0.000 claims abstract description 40
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 38
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 30
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 20
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 16
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 14
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 13
- 239000004640 Melamine resin Substances 0.000 claims abstract description 12
- 239000002216 antistatic agent Substances 0.000 claims abstract description 10
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 9
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 9
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 12
- DCXXMTOCNZCJGO-UHFFFAOYSA-N tristearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 239000011787 zinc oxide Substances 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 6
- 239000005751 Copper oxide Substances 0.000 claims description 6
- 229910000431 copper oxide Inorganic materials 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 229940037312 stearamide Drugs 0.000 claims description 6
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 6
- 229920002554 vinyl polymer Polymers 0.000 claims description 6
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 5
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000007767 bonding agent Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 description 24
- 230000000052 comparative effect Effects 0.000 description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 13
- 229910052760 oxygen Inorganic materials 0.000 description 13
- 239000001301 oxygen Substances 0.000 description 13
- 229920000642 polymer Polymers 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000012774 insulation material Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 229960003237 betaine Drugs 0.000 description 2
- -1 carbonyl betaine Chemical compound 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000001808 coupling effect Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 231100000053 low toxicity Toxicity 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000000979 retarding effect Effects 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 241000949231 Sylon Species 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Artificial Filaments (AREA)
Abstract
The application relates to the field of sea-island filaments, and particularly discloses a high-flame-retardance superfine sea-island filament and a preparation method thereof. A high flame-retardant superfine sea-island yarn comprises an inner sea-island yarn layer and an outer sea-island yarn layer wrapping the inner sea-island yarn layer, wherein the outer sea-island yarn layer is flame-retardant fiber; the sea-island silk inner layer comprises the following raw materials in parts by weight: PET solutions and COPET solutions; the PET solution comprises the following raw materials in parts by weight: 70-80 parts of PET, 10-20 parts of melamine resin, 1-3 parts of antistatic agent, 1-3 parts of dispersing agent and 1-3 parts of antibacterial agent; the COPET solution comprises 30-40 parts of COPET; the flame-retardant fiber comprises the following raw materials in parts by weight: 3-5 parts of polyacrylate, 10-15 parts of zirconium dioxide fiber, 3-5 parts of nano titanium dioxide, 3-8 parts of aluminum hydroxide and 2-3 parts of red phosphorus; the prepared sea-island yarn has the advantage of high flame retardance.
Description
Technical Field
The application relates to the field of sea-island filaments, in particular to a high-flame-retardance superfine sea-island filament and a preparation process thereof
Background
Sea-island fibers are fibers in which one polymer is dispersed in another polymer, the dispersed phase is in the form of "islands" in the cross section of the fiber, and the matrix corresponds to "sea", and one component is surrounded by another component in a finely dispersed state as if there were many islands in the sea, as seen in the cross section of the fiber.
Sea-island fiber has fineness of conventional fiber, but the sea component is dissolved by solvent to obtain ultra-fine sea-island fiber in the form of gathered beam, which has the advantages of high coverage and soft luster of fabric, etc., and many properties of sea-island fiber suede-like fabric are not inferior to natural suede, and many properties are even superior to natural suede. The fabric has soft hand feeling, good drapability, light and thin texture, is half of leather, and can be woven into fabrics with different thickness and weight.
The textile is easy to burn and fire disaster is easy to cause huge economic loss, and simultaneously threatens the life safety of people. Because the sea-island fiber surface is easy to generate a lot of fluff, the fiber is rich in internal gaps and oxygen content, and compared with other fabrics, the fabrics made of the sea-island fiber are easier to burn.
Disclosure of Invention
In order to improve the flame retardance of the sea-island fiber, the application provides a high flame retardance superfine sea-island fiber and a preparation process thereof.
In a first aspect, the present application provides a high flame retardant superfine sea-island filament, which adopts the following technical scheme:
the sea-island silk inner layer comprises the following raw materials in parts by weight: PET solutions and COPET solutions;
the PET solution comprises the following raw materials in parts by weight: 70-80 parts of PET, 10-20 parts of melamine resin, 1-3 parts of antistatic agent, 1-3 parts of dispersing agent and 1-3 parts of antibacterial agent;
the COPET solution comprises the following raw materials in parts by weight: 30-40 parts of COPET;
the flame-retardant fiber comprises the following raw materials in parts by weight: 3-5 parts of polyacrylate, 10-15 parts of zirconium dioxide fiber, 3-5 parts of nano titanium dioxide, 3-8 parts of aluminum hydroxide and 2-3 parts of red phosphorus.
By adopting the technical scheme, the melamine resin plays a role in flame retarding sea island filaments by decomposing and absorbing heat and generating nonflammable gas, and besides, the melamine resin has low price, high efficiency, low toxicity, safety to users, good environmental compatibility and good thermal stability;
the polyacrylate has good bonding performance, and can stably bond nano titanium dioxide, starch, aluminum hydroxide and red phosphorus to zirconium dioxide fibers;
the zirconium dioxide fiber has good fireproof performance (ZrO 2 The melting point is 2590 ℃, the thermal conductivity is low, the chemical stability is good, and the corrosion resistance is high, so that the high-temperature heat insulation material is an excellent high-temperature heat insulation material, zirconium dioxide fibers cover the inner layer of the sea-island fiber, the possibility that strong fire burns to the inner layer of the sea-island fiber is reduced, and the flame retardant property of the sea-island fiber is improved;
when the zirconium dioxide fibers are burned by the big fire, nano titanium dioxide is separated out to form a heat insulation layer which is attached to the zirconium dioxide fibers, so that direct combustion of flame to the zirconium dioxide is isolated, heat conduction is blocked, gaps among the zirconium dioxide fibers are reduced, possibility that the big fire penetrates through inner layers of the sea-island filaments between the zirconium dioxide fibers is reduced, and the nano titanium dioxide and the zirconium dioxide fibers cooperatively improve sintering resistance of the sea-island filaments;
the red phosphorus burns to release phosphorus pentoxide, consumes a large amount of oxygen, plays a role in flame retardance, simultaneously emits reaction heat, and aluminum hydroxide absorbs the heat of the red phosphorus to promote dehydration reaction of the red phosphorus, so that temperature rise is slowed down, a protective film is formed, the thickness of a heat insulation layer is increased, the possibility that big fire penetrates through the inner layer of the sea-island fiber between zirconium dioxide fibers to burn is further reduced, and the sintering resistance of the sea-island fiber is improved.
Preferably, the antistatic agent is an ampholytic type antistatic agent.
By adopting the technical scheme, the amphoteric antistatic agent has better compatibility with the high-molecular polymer and better high-temperature resistance.
Preferably, the antibacterial agent is one or more of nano zinc oxide and nano copper oxide.
By adopting the technical scheme, the nano zinc oxide and the nano copper oxide have strong oxidation-reduction effect and good chemical stability.
Preferably, the dispersing agent is one or more of vinyl bis-stearamide and glyceryl tristearate.
By adopting the technical scheme, the vinyl bis-stearamide can obviously improve the heat resistance and weather resistance of the polymer material, and can also obviously improve the dispersibility and the coupling property of the filler in the polymer; the glyceryl tristearate has good oxidation stability besides good dispersibility of the filler in the polymer.
Preferably, the raw materials of the sea-island silk inner layer also comprise 3-5 parts of nano cerium oxide.
By adopting the technical scheme, the crimping property and the softness of the sea-island yarn are improved, and the situation that the yarn is broken and broken is always reduced.
In a second aspect, the present application provides a method for preparing a high flame retardant superfine sea-island filament, which adopts the following technical scheme: the preparation method of the high-flame-retardance superfine sea-island yarn comprises the following preparation steps:
s1, mixing 70-80 parts of PET, 10-20 parts of melamine resin, 1-3 parts of antistatic agent, 1-3 parts of dispersing agent and 1-3 parts of antibacterial agent together, and carrying out melt drying and extrusion to obtain a PET solution;
s2, drying, melting and extruding 30-40 parts of COPET to obtain a COPET solution;
s3, feeding the PET solution and the COPET solution obtained by mixing into a spinning assembly, and cooling to obtain an island fiber inner layer;
s4, mixing 3-5 parts of polyacrylate, 10-15 parts of zirconium dioxide fiber, 3-5 parts of nano titanium dioxide, 3-8 parts of aluminum hydroxide and 2-3 parts of red phosphorus together to prepare flame-retardant fiber;
s5, immersing the inner layer of the sea-island yarn in the bonding liquid which is difficult to dissolve in water, taking out the sea-island yarn immersed in the bonding liquid which is difficult to dissolve in water, putting the sea-island yarn into the flame-retardant fiber in the S4, shaking the sea-island yarn to make the surface of the inner layer of the sea-island yarn be adhered with the flame-retardant fiber, drying, removing the superfluous flame-retardant fiber on the surface, bonding the flame-retardant fiber with the bonding agent which is difficult to dissolve in water again, and drying to form a stable flame-retardant fiber layer to obtain a sea-island yarn finished product.
Preferably, the titanium dioxide is rutile.
By adopting the technical scheme, the rutile titanium dioxide has stable performance.
Preferably, the thickness of the flame-retardant fiber in the sea-island filament finished product is less than 1/4 of the cross-sectional diameter of the single sea-island filament.
By adopting the technical scheme, the excessive thickness of the flame-retardant fiber affects the comfort level of the fabric made of the sea-island filaments.
In summary, the present application has the following beneficial effects:
1. the melamine resin plays a role in flame retarding sea-island filaments by decomposing and absorbing heat and generating nonflammable gas, and besides, the melamine resin has low price, high efficiency, low toxicity, safety to users, good environmental compatibility and good thermal stability; the polyacrylate has good bonding performance, and can stably bond nano titanium dioxide, starch, aluminum hydroxide and red phosphorus to zirconium dioxide fibers; the zirconium dioxide fiber has good fireproof performance (ZrO 2 The melting point is 2590 ℃, the thermal conductivity is low, the chemical stability is good, and the corrosion resistance is high, so that the high-temperature heat insulation material is an excellent high-temperature heat insulation material, zirconium dioxide fibers cover the inner layer of the sea-island fiber, the possibility that strong fire burns to the inner layer of the sea-island fiber is reduced, and the flame retardant property of the sea-island fiber is improved; when the zirconium dioxide fiber is burned by big fire, nano titanium dioxide is separated out to form a heat insulation layer which is attached to dioxygenThe zirconium dioxide fiber isolates the direct combustion of flame on zirconium dioxide, blocks the conduction of heat, reduces gaps among zirconium dioxide fibers, reduces the possibility that big fire penetrates through the inner layer of the sea-island fiber between the zirconium dioxide fibers, and improves the sintering resistance of the sea-island fiber by the cooperation of nano titanium dioxide and the zirconium dioxide fibers; the red phosphorus burns to release phosphorus pentoxide, consumes a large amount of oxygen, plays a role in flame retardance, simultaneously emits reaction heat, and aluminum hydroxide absorbs the heat of the red phosphorus to promote dehydration reaction of the red phosphorus, so that temperature rise is slowed down, a protective film is formed, the thickness of a heat insulation layer is increased, the possibility that big fire penetrates through the inner layer of the sea-island fiber between zirconium dioxide fibers to burn is further reduced, and the sintering resistance of the sea-island fiber is improved;
2. the vinyl bis-stearamide can obviously improve the heat and weather resistance of the polymer material and can also obviously improve the dispersibility and the coupling property of the filler in the polymer; the glyceryl tristearate has good oxidation stability besides good dispersibility of the filler in the polymer.
Detailed Description
The starting materials used in the examples are all commercially available.
PET is from Shenzhen New Yida plasticization Co., ltd CR-8863;
melamine resins are from taan guang international trade limited 16465;
the carbonyl betaine is from BS-12 of Jinan Boao chemical industry Co., ltd;
alkylalanine was from Shanghai Jin Jinle Utility Co., ltd. JJL385201010101;
vinyl bis-stearamide is from Shandong Haohao New Material Co., ltd HY5454;
glyceryl tristearate is from south Africa, the court and chemical industry Co., ltd 18020-34;
nano zinc oxide is from DXN-HQ20 of darcy concentration nanotechnology (everstate) limited;
nano copper oxide is from NRC-32, new material technology limited of kunshan;
the nano cerium oxide is from Xuan Chengjing VK-Ce01, new materials Co., ltd;
COPET comes from sylon of Shaoxing-Xunjingke textile technologies Co., ltd;
the polyacrylate comes from Jinan Fei chemical Co., ltd;
zirconium dioxide fibers are from Shandong Hot Shield high temperature materials Co., ltd;
nano titanium dioxide (rutile type) is from Henan Huarong environmental protection technology limited company;
aluminum hydroxide is from Shandong Zhongyang chemical technology Co., ltd;
red phosphorus is from Guangdong river New Material (Guangzhou) limited.
Examples
Example 1
The preparation method of the high-flame-retardance superfine sea-island yarn comprises the following preparation steps:
s1, mixing 70kg of PET, 10kg of melamine resin, 1kg of carbonyl betaine, 1kg of vinyl bis stearamide, 1kg of nano zinc oxide and 3kg of nano cerium oxide together, and carrying out melt drying and extrusion to obtain a PET solution;
s2, drying, melting and extruding 30kg of COPET to obtain a COPET solution;
s3, feeding the PET solution and the COPET solution obtained by mixing into a spinning assembly, and cooling to obtain an island fiber inner layer;
s4, mixing 3kg of polyacrylate, 10kg of zirconium dioxide fiber, 3kg of nano titanium dioxide, 3kg of aluminum hydroxide and 2kg of red phosphorus together to prepare flame-retardant fiber;
s5, immersing the inner layer of the sea-island yarn in the bonding liquid, taking out the sea-island yarn immersed in the bonding liquid with indissolvable water and putting the sea-island yarn into the flame-retardant fiber in the S4, shaking the sea-island yarn to make the surface of the inner layer of the sea-island yarn be stained with the flame-retardant fiber, drying, removing redundant flame-retardant fiber, mutually bonding the flame-retardant fiber by using the bonding agent with indissolvable water, and drying to form a flame-retardant fiber layer to obtain a sea-island yarn finished product; wherein, the thickness of the flame-retardant fiber in the sea-island filament finished product is 1/4 of the cross-section diameter of the single sea-island filament.
Examples 2-9 and comparative examples 1-2
Examples 2 to 9 and comparative examples 1 to 2 were each different from example 1 in the ratio of the raw materials, and the specific ratios of the raw materials are shown in Table 1.
TABLE 1 raw material ratios of examples 2-9 and comparative examples 1-2
Performance test
Detection method
Combustion performance test: the fabrics woven from sea island filaments (after the COPET in the fabrics has been dissolved and the fabrics dried) were tested for flammability performance according to standard GB/T5455-1997 tests for limiting oxygen index, after-flame time, smoldering time and drop ignition cotton wool experiments.
Table 2 comparison of the burning properties of the fabrics of examples 2-9 and comparative examples 1-2
The islands-in-sea silk fabrics of examples 2-9 and comparative examples 1-2 had a post-ignition time and smoldering time of less than 5 seconds, and the drippings were all responsible for cotton wool burning or smoldering.
From the data of comparative examples 1, 3 and 1-2, it can be seen that the melamine resin improves the flame retardant property of the sea-island yarn, and in a certain range, the more the melamine resin, the better the flame retardant property of the sea-island yarn;
the data of comparative examples 1 and 8-9 show that the limiting oxygen index of the sea-island yarn is reduced by replacing the antibacterial agent zinc oxide with copper oxide, and that zinc oxide not only has good bactericidal performance, but also has good flame retardant performance, and that the more zinc oxide, the higher the limiting oxygen index of the sea-island yarn fabric.
Examples 10 to 19
Examples 10-19 differ from example 1 in the proportions of the raw materials, the specific proportions of the raw materials being shown in Table 3.
TABLE 3 raw material ratios for examples 10-20
The specific raw materials of comparative examples 3 to 11 were as follows:
table 4 raw material ratios of comparative examples 3 to 11
The combustion performance versus the ratio of the fabrics of examples 10-19, comparative examples 3-11 are shown in tables 5 and 6:
table 5 comparison of the burning properties of the fabrics in examples 10-19
Table 6 comparison of the burning properties of fabrics in comparative examples 3-11
The islands-in-sea silk fabrics of examples 10-19 and comparative examples 3-11 had a post-ignition time and smoldering time of less than 5 seconds, and the drippings were all responsible for cotton wool burning or smoldering.
Referring to the data of tables 3 to 6, the data of comparative example 11, examples 13 to 14, comparative examples 3 to 4 and comparative example 11 found that the zirconium dioxide fibers increased the limiting oxygen index of the sea-island silk fabric from 19.1% to 23%, and within a certain range, the more the zirconium dioxide fibers, the higher the limiting oxygen index of the sea-island silk fabric;
the data of comparative examples 1, 15-16 and comparative examples 5-6 show that the nano titanium dioxide and zirconium dioxide cooperate to effectively improve the limiting oxygen index of the sea-island silk fabric, and in a certain range, the more the nano titanium dioxide is, the higher the limiting oxygen index of the sea-island silk fabric is;
the data of comparative example 1, examples 17-18 and comparative examples 7-8 show that aluminum hydroxide effectively increases the limiting oxygen index of the sea-island silk fabric, and that the more aluminum hydroxide, the higher the limiting oxygen index of the sea-island silk fabric, within a certain range;
the data of comparative example 1, examples 18-19, and comparative examples 9-10 show that aluminum hydroxide and synergistic red phosphorus effectively raise the limiting oxygen index of the sea-island silk fabric.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (6)
1. The high-flame-retardance superfine sea-island yarn is characterized by comprising a sea-island yarn inner layer and a sea-island yarn outer layer wrapped on the sea-island yarn inner layer, wherein the sea-island yarn outer layer is flame-retardant fiber;
the sea-island silk inner layer comprises the following raw materials in parts by weight: PET melt and COPET melt;
the PET melt comprises the following raw materials in parts by weight: 70-80 parts of PET, 10-20 parts of melamine resin, 1-3 parts of antistatic agent, 1-3 parts of dispersing agent, 1-3 parts of antibacterial agent and 3-5 parts of nano cerium oxide;
the COPET melt comprises the following raw materials in parts by weight: 30-40 parts of COPET;
the flame-retardant fiber comprises the following raw materials in parts by weight: 3-5 parts of polyacrylate, 10-15 parts of zirconium dioxide fiber, 3-5 parts of nano titanium dioxide, 3-8 parts of aluminum hydroxide and 2-3 parts of red phosphorus;
the antibacterial agent is one or more of nano zinc oxide and nano copper oxide.
2. The high flame retardant superfine sea-island filament of claim 1, wherein: the antistatic agent is an amphoteric antistatic agent.
3. The high flame retardant superfine sea-island filament of claim 1, wherein: the dispersing agent is one or more of vinyl bis-stearamide and glyceryl tristearate.
4. A method for preparing the high flame retardant superfine sea-island filament according to any one of claims 1 to 3, characterized in that: the preparation method comprises the following preparation steps:
s1, mixing 70-80 parts of PET, 10-20 parts of melamine resin, 1-3 parts of antistatic agent, 1-3 parts of dispersing agent, 1-3 parts of antibacterial agent and 3-5 parts of nano cerium oxide together, melting, drying and extruding to obtain PET melt;
s2, drying, melting and extruding 30-40 parts of COPET to obtain a COPET melt;
s3, feeding the PET melt and the COPET melt obtained by mixing into a spinning assembly, and cooling to obtain an island yarn inner layer;
s4, mixing 3-5 parts of polyacrylate, 10-15 parts of zirconium dioxide fiber, 3-5 parts of nano titanium dioxide, 3-8 parts of aluminum hydroxide and 2-3 parts of red phosphorus together to prepare flame-retardant fiber;
s5, immersing the inner layer of the sea-island yarn in the bonding liquid which is difficult to dissolve in water, taking out the sea-island yarn immersed in the bonding liquid which is difficult to dissolve in water, putting the sea-island yarn into the flame-retardant fiber in the S4, shaking the sea-island yarn to make the surface of the inner layer of the sea-island yarn be stained with the flame-retardant fiber, drying, removing superfluous flame-retardant fiber on the surface, mutually bonding the flame-retardant fiber by using the bonding agent which is difficult to dissolve in water again, and drying to form a stable flame-retardant fiber layer to obtain a sea-island yarn finished product;
the antibacterial agent is one or more of nano zinc oxide and nano copper oxide.
5. The method for preparing the high-flame-retardant superfine sea-island yarn according to claim 4, which is characterized in that: the titanium dioxide is rutile titanium dioxide.
6. The method for preparing the high-flame-retardant superfine sea-island yarn according to claim 4, which is characterized in that: the thickness of the flame-retardant fiber in the sea-island filament finished product is less than 1/4 of the cross-section diameter of the single sea-island filament.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210181910.9A CN114318589B (en) | 2022-02-25 | 2022-02-25 | High-flame-retardance superfine sea-island yarn and preparation process thereof |
Applications Claiming Priority (1)
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| CN116334791B (en) * | 2023-04-04 | 2023-12-08 | 临邑大正特纤新材料有限公司 | Preparation method, product and application of high-moisture-absorption PET superfine fiber |
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| CN109706545B (en) * | 2018-11-12 | 2021-05-14 | 上海德福伦化纤有限公司 | Microporous hollow graphene sea-island fiber and manufacturing method thereof |
| CN111621875B (en) * | 2020-07-07 | 2023-05-19 | 上海市合成纤维研究所有限公司 | Sea-island fiber with PET as island component, preparation method thereof and superfine fiber formed by sea-island fiber |
| CN113417029B (en) * | 2021-06-24 | 2022-09-16 | 杭州惠丰化纤有限公司 | Elastic sea island filament and production process thereof |
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