CN111235894B - Coating jacquard thread for jacquard loom and preparation method thereof - Google Patents
Coating jacquard thread for jacquard loom and preparation method thereof Download PDFInfo
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- CN111235894B CN111235894B CN202010040156.8A CN202010040156A CN111235894B CN 111235894 B CN111235894 B CN 111235894B CN 202010040156 A CN202010040156 A CN 202010040156A CN 111235894 B CN111235894 B CN 111235894B
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- silicone oil
- amino silicone
- jacquard
- silicon
- thermoplastic polyurethane
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- 238000000576 coating method Methods 0.000 title claims abstract description 112
- 239000011248 coating agent Substances 0.000 title claims abstract description 101
- 238000002360 preparation method Methods 0.000 title claims abstract description 48
- 229920013822 aminosilicone Polymers 0.000 claims abstract description 274
- 239000003921 oil Substances 0.000 claims abstract description 274
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 111
- 239000010703 silicon Substances 0.000 claims abstract description 111
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 111
- 229920000728 polyester Polymers 0.000 claims abstract description 105
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims abstract description 104
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims abstract description 104
- 238000010438 heat treatment Methods 0.000 claims abstract description 66
- 239000010410 layer Substances 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims abstract description 61
- 239000000203 mixture Substances 0.000 claims abstract description 42
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910000077 silane Inorganic materials 0.000 claims abstract description 34
- 239000011247 coating layer Substances 0.000 claims abstract description 20
- 239000012792 core layer Substances 0.000 claims abstract description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 70
- 229910021529 ammonia Inorganic materials 0.000 claims description 35
- 239000002994 raw material Substances 0.000 claims description 24
- 238000004132 cross linking Methods 0.000 claims description 23
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 14
- 238000005253 cladding Methods 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 10
- 238000005469 granulation Methods 0.000 claims description 10
- 230000003179 granulation Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- ZYAASQNKCWTPKI-UHFFFAOYSA-N 3-[dimethoxy(methyl)silyl]propan-1-amine Chemical group CO[Si](C)(OC)CCCN ZYAASQNKCWTPKI-UHFFFAOYSA-N 0.000 claims description 6
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 claims description 6
- 238000007730 finishing process Methods 0.000 claims description 4
- -1 poly phthalic anhydride diethylene glycol ester diol Chemical class 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 claims 1
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 36
- 230000000052 comparative effect Effects 0.000 description 23
- 239000003054 catalyst Substances 0.000 description 18
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 18
- 239000012535 impurity Substances 0.000 description 18
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 description 18
- 238000003756 stirring Methods 0.000 description 18
- 238000005299 abrasion Methods 0.000 description 13
- 241000347389 Serranus cabrilla Species 0.000 description 11
- 229920002635 polyurethane Polymers 0.000 description 11
- 239000004814 polyurethane Substances 0.000 description 11
- 238000011179 visual inspection Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- HXLAEGYMDGUSBD-UHFFFAOYSA-N 3-[diethoxy(methyl)silyl]propan-1-amine Chemical compound CCO[Si](C)(OCC)CCCN HXLAEGYMDGUSBD-UHFFFAOYSA-N 0.000 description 9
- 238000001816 cooling Methods 0.000 description 9
- 239000007822 coupling agent Substances 0.000 description 9
- 229920006264 polyurethane film Polymers 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000005012 migration Effects 0.000 description 5
- 238000013508 migration Methods 0.000 description 5
- 125000000524 functional group Chemical group 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 229920004933 Terylene® Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 229920002978 Vinylon Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229920003225 polyurethane elastomer Polymers 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- ZLBFMYQIKPWYBC-UHFFFAOYSA-N 2-benzofuran-1,3-dione;2-(2-hydroxyethoxy)ethanol Chemical compound OCCOCCO.C1=CC=C2C(=O)OC(=O)C2=C1 ZLBFMYQIKPWYBC-UHFFFAOYSA-N 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- 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
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/6436—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing amino groups
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
- D02G3/045—Blended or other yarns or threads containing components made from different materials all components being made from artificial or synthetic material
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/35—Abrasion, pilling or fibrillation resistance
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
Abstract
The invention relates to a coated jacquard thread for a jacquard loom and a preparation method thereof, wherein a mixture of two different types of amino silicone oil and silane modified thermoplastic polyurethane is coated on the surface of a high-strength activated polyester industrial yarn to form a skin-core structure, then other types of amino silicone oil are arranged on the surface of the skin-core structure, and finally heat treatment is carried out to make the amino silicone oil self-crosslink to prepare the coated jacquard thread for the jacquard loom; the coated jacquard yarn has a multilayer structure and sequentially comprises a core layer, a skin layer and a coating layer from inside to outside, wherein the core layer is high-strength activated polyester industrial yarn, the skin layer is a mixture of silicon-containing thermoplastic polyurethane and two kinds of amino silicone oil, silicon-containing groups in the silicon-containing thermoplastic polyurethane are enriched on the outer edge of the skin layer, and the other kind of amino silicone oil is self-crosslinked on the outer surface of the skin layer to form a film with a net structure. The method of the invention not only obviously improves the wear resistance and the service life of the coating jacquard thread, but also can not cut the jacquard mesh plate and the seabed plate.
Description
Technical Field
The invention belongs to the technical field of jacquard threads, and relates to a coated jacquard thread for a jacquard loom and a preparation method thereof.
Background
The jacquard yarn (also called as harness cord) is one of the main components of the shedding device in the jacquard loom, and during the high-speed operation of the jacquard loom, the jacquard yarn generates high-speed up-and-down pulling motion, and during the up-and-down reciprocating motion, the jacquard yarn is in a tight state due to the action of force, and generates certain friction action with the jacquard mesh plate and the upper sea bed plate. Particularly, as the width degree of the jacquard loom is increased, the force between the jacquard threads and the jacquard mesh plate and the upper sea bed plate is also correspondingly increased, and a large amount of heat is generated between the jacquard threads and the jacquard mesh plate and the upper sea bed plate due to rapid friction movement, so that the performance of the jacquard threads is accelerated to be reduced, and the service life of the jacquard threads is influenced. Once the jacquard threads are broken or the jacquard eye plates and the upper sea bed plate are cut through, the cloth cover can be flawed, the operation of the jacquard loom needs to be stopped immediately, and the damaged jacquard threads or the jacquard eye plates and the upper sea bed plate need to be replaced immediately, so that the production efficiency can be reduced, the consumption of manpower and material resources is greatly increased, and the production cost of products is increased.
The prior art introduces vinylon jacquard threads which have higher strength and wear resistance, but the vinylon jacquard threads are gradually replaced by polyester jacquard threads due to the production cost and environmental protection problems, the tendency of not adapting to wide looms and the great influence on the product quality caused by the change of contractibility in humid environments; however, during repeated rubbing, the polyester jacquard threads generate a large amount of heat and static electricity to fluff the polyester jacquard threads, and the static electricity adsorbs dust in the air to deteriorate a rubbing environment and accelerate the breakage of the polyester jacquard threads. There is a report in the literature that after twisting a polyester tow, the surface of the polyester tow is coated with paraffin or waxed, and then is further immersed in a slurry of acrylic acid, starch and water, and a polyester yarn is prepared by means of coating. Although the method can reduce the side effect caused in the friction process in theory, the terylene molecular structure is symmetrical, the crystallinity is high, and high-polarity groups are lacked, so the binding force between the coating and the terylene jacquard thread is poor, the firmness is low, and the terylene jacquard thread can be quickly broken.
In order to increase the bonding force between the polyester jacquard thread and other coating materials, a large number of documents describe that the mechanical bonding force between the coating and the fiber is increased by increasing the roughness of the fiber surface or corona discharge or plasma treatment, or free active groups are introduced on the surface of the fiber to improve the adhesion property of the coating, but the fiber strength is reduced or the practical production application is more limited. Chinese patent CN 202202067U discloses a method for improving wear resistance of polyester harness cord, which improves wear resistance of harness cord by double-layer coating of central polyester fiber, but because nylon 6 at the outermost layer of the coating has higher hardness, although the coating has good wear resistance, in the using process, the coating can have larger wear to a jacquard mesh plate and a sea floor above the jacquard mesh plate, even the jacquard mesh plate is cut through, thereby affecting normal production, reducing production efficiency and improving production cost. The prior patent documents further disclose that the polyester jacquard thread is made by immersing the pretreated polyester yarn in a dispersion of aqueous polyurethane to form a coating, but the coating formed by the method is thin. The coating is in direct contact with the component during friction, and the friction coefficient between the coating and the component is large, so that the jacquard thread, the jacquard mesh plate and the upper sea floor plate are not worn quickly, namely the jacquard thread is not worn quickly, the jacquard mesh plate and the sea floor plate are not cut, and the small friction coefficient between the jacquard thread, the jacquard mesh plate and the upper sea floor plate is required to be ensured, so that the method has certain limitation.
Therefore, the jacquard thread for the jacquard loom, which is long in online service life, is researched, so that the jacquard thread cannot be quickly worn off by the jacquard mesh plate and the submarine plate, and the jacquard mesh plate and the submarine plate cannot be cut, and the method has very important significance.
Disclosure of Invention
The invention aims to solve the problems that the on-line service life of a jacquard weaving machine jacquard thread in the prior art is not long enough, and a jacquard mesh plate and a jacquard bottom plate are not cut under the condition of long enough service life, and provides a multilayer-structure coated jacquard thread for the jacquard weaving machine and a preparation method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a preparation method of a coating jacquard thread with a multilayer structure for a jacquard loom comprises a coating process, a finishing process and a heat treatment process, wherein the main raw material is high-strength activated polyester industrial yarn;
the coating jacquard thread for the jacquard loom has a multilayer structure and sequentially comprises a core layer, a skin layer and a coating layer from inside to outside.
The coating step is a step of coating the mixture of amino silicone oil A, amino silicone oil B and silicon-containing thermoplastic polyurethane on the surface of the high-strength activated polyester industrial yarn to form a sheath-core structure;
the mass ratio of the amino silicone oil A to the amino silicone oil B is 25-30: 70-75, the amino silicone oil A is the amino silicone oil with the viscosity of 8000-10000 mPa & s and the ammonia value of 0.8-1.2, and the amino silicone oil B is the amino silicone oil with the viscosity of 20000-30000 mPa & s and the ammonia value of 1.0-1.4;
the preparation method of the amino silicone oil A and the amino silicone oil B comprises the following steps:
preparation of amino silicone oil A: the preparation process of the amino silicone oil A comprises the following steps: adding 85-90 parts by weight of octamethylcyclotetrasiloxane, 6.2-8.3 parts by weight of 3-aminopropylmethyldiethoxysilane and 0.015-0.020 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 90-100 ℃, reacting at constant temperature for 3-4 h, and vacuumizing (2000-3000Pa) to remove impurities to obtain amino silicone oil A with the viscosity of 8000-10000 mPa & s and the ammonia value of 0.8-1.2.
Preparation of amino silicone oil B: the preparation process of the amino silicone oil B comprises the following steps: adding 88-92 parts by weight of octamethylcyclotetrasiloxane, 8-12 parts by weight of diamino coupling agent Q-220 and 0.008-0.010 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 90-100 ℃, reacting at constant temperature for 3-4 h, and vacuumizing (1500-2000 Pa) to remove impurities to obtain amino silicone oil B with viscosity of 20000-30000 mPa-s and ammonia value of 1.0-1.4.
The silicon-containing thermoplastic polyurethane is silane modified thermoplastic polyurethane, and the silane is 3-aminopropyl methyl dimethoxy silane or N-aminoethyl-3-aminopropyl methyl dimethoxy silane;
a finishing step of finishing an amino silicone oil C to the surface of the covered jacquard thread having a skin-core structure, the amino silicone oil C being an amino silicone oil having a viscosity of 1000 to 2000 mPas and an ammonia value of 0.2 to 0.6;
and after finishing, carrying out heat treatment to initiate self-crosslinking of the amino silicone oil C.
In order to improve the friction resistance of the jacquard thread and prolong the service life of the jacquard thread, the main raw material selected by the invention is the high-strength activated polyester industrial yarn, on one hand, the high-strength activated polyester industrial yarn has high strength, on the other hand, the high-strength activated polyester industrial yarn is prepared by the activation and ripening processes and has the characteristic of high adhesion with polyurethane, therefore, when the mixture of amino silicone oil and silane modified thermoplastic polyurethane is coated on the surface of the high-strength activated polyester industrial yarn, the interface adhesion between the high-strength activated polyester industrial yarn and the silane modified thermoplastic polyurethane is greatly improved, and after the silane modified thermoplastic polyurethane forms a skin layer structure on the surface, the silicon-containing functional group is enriched on the outer edge of the skin layer, the silicon-containing functional group adopts silane with a single functional group to participate in the synthesis of polyurethane and is positioned at the functional group at the tail end of a molecular chain of the polyurethane, so that the wear resistance of the skin layer structure of the polyurethane is improved, further enhances the protection effect of the silane modified thermoplastic polyurethane on the polyester industrial yarn, and generally shows that the wear resistance of the jacquard yarn is improved.
In addition, the amino silicone oil C added in the invention exists in a coating layer coating the jacquard thread, and the amino silicone oil A and the amino silicone oil B exist in a skin layer; after the amino silicone oil C of the coating layer is subjected to heat treatment, the self-crosslinking is initiated to form a film with a net structure, so that the friction coefficient of the skin layer is reduced; and the amino groups contained in the amino silicone oil A and the amino silicone oil B in the skin layer can generate hydrogen bond action with polar groups on polyurethane, the hydrogen bond plays a role in delaying migration of the amino silicone oil A and the amino silicone oil B, and the larger the ammonia value is, the stronger the hydrogen bond action is, and the slower the migration speed is.
The migration process is as follows: when the coated jacquard thread works on line, the amino silicone oil C film of the coating layer is continuously worn, and heat is generated in the friction process, so that the temperature of the skin layer rises, the amino silicone oil A and the amino silicone oil B in the skin layer start to migrate under the action of heat, the migration speed of the amino silicone oil A is higher, the amino silicone oil A migrates out first, the migration speed of the amino silicone oil B is low, and then the amino silicone oil B migrates out; the amino silicone oil A and the amino silicone oil B which are continuously moved out make up the amino silicone oil C (film with a net structure) with a continuously worn coating layer, the friction coefficient of the coating jacquard thread is kept at a lower value for a long time, and heat generated between the coating jacquard thread and the jacquard mesh plate and between the coating jacquard mesh plate and the seabed plate above the coating jacquard thread in the process of movement is greatly reduced, so that the wear resistance of the coating jacquard thread is improved, the risk that the jacquard mesh plate and the seabed plate are cut by the coating jacquard thread is reduced, and the service lives of the coating jacquard thread, the jacquard mesh plate and the seabed plate are prolonged.
As a preferable technical scheme:
the preparation method of the coating jacquard thread for the jacquard loom comprises the following steps: respectively heating phthalic anhydride diethylene glycol polycondensate diol (DEG/PA-2000) and polyhexamethylene adipate diol (PEA-2000) to 70-90 ℃, heating diphenylmethane diisocyanate (MDI) to 70-80 ℃, heating 1, 4-Butanediol (BDO) and silane to 45-55 ℃, metering and mixing reaction raw materials, and then sending the mixture into a double-screw extruder at the temperature of 150-250 ℃ for extrusion and granulation to obtain the silicon-containing thermoplastic polyurethane, wherein the tail end of a macromolecular chain of the silicon-containing thermoplastic polyurethane is a silicon-containing group, and when the silicon-containing thermoplastic polyurethane is coated on a high-strength active polyester industrial yarn to form a skin-core structure, the silicon-containing group is concentrated at the outer edge of a skin layer, so that the wear resistance of the polyurethane is improved.
According to the preparation method of the coated jacquard thread for the jacquard loom, the silicon-containing thermoplastic polyurethane raw materials comprise the following reaction raw materials in parts by weight: DEG/PA-200045-50 parts, PEA-200050-55 parts, MDI 55-57 parts, BDO 15-16 parts and silane 1.0-1.5 parts. The molecular backbone of the polyurethane elastomer is a block copolymer composed of alternating soft segments (soft segments) that provide the toughness and elasticity of the elastomer and hard segments (hard segments) that contribute to the rigidity and strength of the elastomer. The main chain of the polyurethane molecule contains polar groups such as ether, ester or carbamido besides carbamate groups, hydrogen bonds can be formed in the polyurethane molecule and among the polyurethane molecules due to the existence of a large number of the polar groups, and micro-phase separation is generated due to the thermodynamic incompatibility of a soft segment and a hard segment, so that the polyurethane elastomer has the advantages of high strength, tear resistance, excellent wear resistance and the like due to the structural characteristics.
According to the preparation method of the coated jacquard thread for the jacquard loom, the Shore hardness of the silicon-containing thermoplastic polyurethane is 85-90A, and the hardness range corresponds to the optimal wear resistance.
According to the preparation method of the coated jacquard thread for the jacquard loom, the total fineness of the high-strength activated polyester industrial yarn is 600-2000 dtex, and the breaking strength is more than or equal to 8.1 cN/dtex.
The preparation method of the coating jacquard thread with the multilayer structure for the jacquard loom comprises the following coating steps: the high-strength activated polyester industrial yarn passing through the stranded wire penetrates into a center hole of a screw extruder cladding die head, the slice, the amino silicone oil A and the amino silicone oil B which are prepared by the patent are melted by the screw extruder at 177-232 ℃ (the hard segment content is higher, the melting point is higher), and then the melted materials flow into the cladding die head, the melt flowing out of the die head extrudes the high-strength activated polyester industrial yarn stranded wire of the center hole simultaneously after being clad, and the high-strength activated polyester industrial yarn is cooled, formed and wound through a water cooling tank to prepare the cladding stripping wire with a skin-core structure. In the coating procedure, the mass ratio of the total mass of the amino silicone oil A and the amino silicone oil B to the silicon-containing thermoplastic polyurethane is 1.5-3.0: 100, and the mass ratio of the silicon-containing thermoplastic polyurethane to the high-strength activated polyester industrial yarn is 10-20: 100.
According to the preparation method of the coating jacquard thread with the multilayer structure for the jacquard loom, in the finishing process, the finishing amount of the amino silicone oil C is 3-5 wt%; the temperature of the heat treatment is 150-180 ℃. The ammonia value of the amino silicone oil is in direct proportion to the amino content (percentage) in the amino silicone oil, the higher the amino content is, the larger the ammonia value is, the higher the activity of the amino silicone oil is, and the self-crosslinking film formation is facilitated; the viscosity of the amino silicone oil is directly proportional to the molecular weight, the greater the molecular weight, the better the strength of the film formed by self-crosslinking.
The preparation method of the coating jacquard thread with the multilayer structure for the jacquard loom comprises the following process flows: merging lines → first twisting → second twisting → coating → finishing → heat treatment.
The invention also provides a coating jacquard thread for the jacquard loom, which is prepared by adopting the preparation method of the multilayer structure for the jacquard loom, and the coating jacquard thread has a multilayer structure, wherein the core layer is high-strength activated polyester industrial yarn, the skin layer is a mixture of silicon-containing thermoplastic polyurethane, amino silicone oil A and amino silicone oil B, and the coating layer is amino silicone oil C; the silicon-containing groups in the silicon-containing thermoplastic polyurethane are enriched at the outer edge of the skin layer, the amino silicone oil A and the amino silicone oil B are dispersed in the skin layer, and the amino silicone oil C is self-crosslinked on the outer surface of the skin layer to form a film with a net structure.
The coating jacquard thread for the jacquard loom has a multilayer structure, the bonding effect among all parts is properly controlled, and when the coating jacquard thread is used for the jacquard loom, the worn objects are as follows in sequence: the amino silicone oil C of the coating layer forms a film with a net structure through self-crosslinking, the amino silicone oil A and the amino silicone oil B migrate to the surface from the skin layer, a silicon-containing group in the silicon-containing thermoplastic polyurethane, a polyurethane chain segment in the silicon-containing thermoplastic polyurethane and the polyester industrial yarn as a core layer; each layer on the surface plays a certain role in protecting the material of the inner layer, and because of the bonding effect between the layers, the friction resistance of the coating jacquard thread is greatly improved on the whole, and the friction coefficient between the coating jacquard thread and the jacquard mesh plate as well as the upper sea bed plate is reduced, so that the coating jacquard thread has good wear resistance, and the jacquard mesh plate and the sea bed plate cannot be cut.
As a preferred technical scheme:
the coated jacquard thread for jacquard loom has a diameter of 0.5-2.0 mm and a unit mass length of 3150-610 m/kg, and is tested by the test equipment of patent CN 108221389A: the quality of the weight is adjusted to ensure that the tension of the coating jacquard thread prepared by the method is 14N, the included angle between the coating jacquard thread and the porous jacquard mesh plate is adjusted to be 38 degrees, the friction length of the coating jacquard thread is adjusted to be 16mm, and the test speed is adjusted to be 440 r/min; the wear and tear frequency of the coated jacquard thread prepared by the method is more than 107 ten thousand times measured by adopting the test conditions.
Has the advantages that:
(1) according to the preparation method of the coated jacquard yarn for the jacquard loom, the mixture of the amino silicone oil and the silane modified thermoplastic polyurethane is coated on the surface of the high-strength activated polyester industrial yarn to form the coated jacquard yarn with the skin-core structure, and the amino silicone oil is further finished on the surface of the skin-core structure to obtain the coated jacquard yarn with the multilayer structure, so that the wear resistance of the coated jacquard yarn is effectively improved;
(2) the coating jacquard thread for the jacquard loom, which is prepared by the preparation method of the coating jacquard thread for the jacquard loom, has a multilayer structure, so that the coating jacquard thread has the characteristics of good wear resistance and small friction coefficient with a jacquard mesh plate and a sea bed plate on the jacquard mesh plate in the friction process of the coating jacquard thread, the online service life of the coating jacquard thread, the jacquard mesh plate and the sea bed plate on the jacquard mesh plate in the operation process of the jacquard loom is remarkably prolonged, the frequency of replacing the coating jacquard thread, the jacquard mesh plate and the sea bed plate can be reduced, the production cost is remarkably reduced, and the coating jacquard thread for the jacquard mesh plate is suitable for large-area popularization and use.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
A method for preparing a coating jacquard thread for a jacquard loom comprises the following steps:
(1) preparation of silicon-containing thermoplastic polyurethane: firstly, heating DEG/PA-2000 and PEA-2000 to 70 ℃, heating MDI to 70 ℃, heating BDO and silane (3-aminopropyl methyl dimethoxy silane) to 45 ℃, metering and mixing the reaction raw materials, and then sending the mixture into a double-screw extruder with the temperature of 150 ℃ for extrusion and granulation to obtain the silicon-containing thermoplastic polyurethane; the method comprises the following steps of (1) adding reaction raw materials in parts by weight: DEG/PA-200045 parts, PEA-200050 parts, MDI 55 parts, BDO 15 parts and silane 1 part; the hardness Shore A of the silicon-containing thermoplastic polyurethane is 87;
(2) carrying out wire merging, primary twisting, secondary twisting, wire stranding and coating on the high-strength activated polyester industrial yarn in sequence, wherein the coating is to coat the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane prepared in the step (1) on the surface of the high-strength activated polyester industrial yarn (the total titer is 600dtex, and the breaking strength is 8.15 cN/dtex); wherein the mass ratio of the amino silicone oil A to the amino silicone oil B is 30:70, the mass ratio of the total mass of the amino silicone oil A and the amino silicone oil B to the silicon-containing thermoplastic polyurethane is 1.5:100, and the mass ratio of the silicon-containing thermoplastic polyurethane to the high-strength activated polyester industrial yarn is 10: 100;
the coating process comprises the following steps: the high-strength activated polyester industrial yarn which passes through the stranded wire penetrates into a center hole of a screw extruder cladding die head, the slice, the amino silicone oil A and the amino silicone oil B which are prepared by the method are melted by the screw extruder at 177 ℃ and then flow into the cladding die head in a metering mode, the melt flowing out of the die head wraps the high-strength activated polyester industrial yarn stranded wire of the center hole and then is extruded out simultaneously, and the high-strength activated polyester industrial yarn stranded wire is cooled, formed and wound through a water cooling tank to prepare the cladding stripping wire with a skin-core structure.
The preparation process of the amino silicone oil A comprises the following steps: adding 85 parts by weight of octamethylcyclotetrasiloxane, 6.2 parts by weight of 3-aminopropylmethyldiethoxysilane and 0.015 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 90 ℃, reacting for 3 hours at constant temperature, and vacuumizing (2200Pa) to remove impurities to obtain amino silicone oil A with the viscosity of 8000mPa & s and the ammonia value of 0.93;
the preparation process of the amino silicone oil B comprises the following steps: adding 88 parts by weight of octamethylcyclotetrasiloxane, 8.5 parts by weight of diamino coupling agent Q-220 and 0.008 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 90 ℃, reacting at constant temperature for 3 hours, and vacuumizing (1500Pa) to remove impurities to obtain amino silicone oil B with the viscosity of 26000mPa & s and the ammonia value of 1.25;
(3) finishing: amino silicone oil C (American Dow Corning silicone oil DC-8209A, ammonia value of 0.5 and viscosity of 1200mPa & s) is arranged on the surface of the stripping line with the skin-core structure of the high-strength activated polyester industrial yarn coated with the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane; the finishing amount of amino silicone oil was 3 wt%;
(4) and (3) carrying out heat treatment at the temperature of 150 ℃ to initiate self-crosslinking of the amino silicone oil C.
The coating jacquard thread for the jacquard loom prepared according to the steps (1) to (4) has a multilayer structure, wherein a core layer is high-strength activated polyester industrial yarn, a skin layer is a mixture of silicon-containing thermoplastic polyurethane, amino silicone oil A and amino silicone oil B, and a coating layer is amino silicone oil C; silicon-containing groups in the silicon-containing thermoplastic polyurethane are enriched on the outer edge of the skin layer, the amino silicone oil A and the amino silicone oil B are dispersed in the skin layer, the amino silicone oil C forms a film with a net structure on the outer surface of the skin layer through self-crosslinking, the diameter of a coating jacquard thread for the jacquard loom is 0.5mm, the length of unit mass is 3150m/kg, and the number of abrasion and breakage is 109.6 ten thousand; the jacquard comber board is not abraded by visual inspection after 12 months of computer test.
Comparative example 1
The preparation method of the coating jacquard thread for the jacquard loom is basically the same as that in the example 1, except that the polyester industrial yarn which is not subjected to the activating and curing process is adopted in the step (2) instead of the high-strength activated polyester industrial yarn, and the wear and tear frequency of the coating jacquard thread for the jacquard loom prepared in the comparative example 1 is 56 ten thousand times. After the test for 6 months on the machine, the abrasion of the jacquard comber board is obvious by visual inspection.
Comparing the comparative example 1 with the example 1, it can be seen that the number of wear and tear of the covered jacquard thread for jacquard loom in the comparative example 1 is significantly less than that of the example 1, because the polyester industrial yarn in the comparative example 1 is not activated and matured, so that the adhesion between the polyurethane films coated subsequently is low, and during friction, the polyurethane films are easily slipped with the polyester industrial yarn, which leads to faster wear of the polyurethane films, therefore, the number of wear and tear of the covered jacquard thread is reduced, and at the same time, the friction coefficient between the covered jacquard thread and the jacquard mesh plate and the upper sea floor plate is increased, and the service life of the jacquard mesh plate and the upper sea floor plate is reduced.
Comparative example 2
A method for preparing a coated jacquard thread for a jacquard loom, which comprises the steps of substantially the same process as in example 1, except that no silane is added in the step (1); the number of abrasion breakage of the covered jacquard thread for the jacquard loom obtained in comparative example 2 was 48 ten thousand. After the test for 5 months on the machine, the abrasion of the jacquard comber board is obvious by visual inspection.
As can be seen by comparing comparative example 2 with example 1, the number of wear fractures of the covered jacquard yarn for jacquard loom in comparative example 2 is significantly smaller than that of example 1, because the polyurethane film on the covered jacquard yarn in comparative example 2 does not contain silane, and when rubbed into the polyurethane film layer, the friction coefficient is larger than in the same case of example 1, making the polyurethane film more easily worn, and thus the number of wear fractures of the covered jacquard yarn is smaller.
The coated jacquard threads in the embodiment 1 and the comparative example 2 are used on a jacquard loom, under the same use condition, the damage degree of the jacquard mesh plate and the sea bed plate in the comparative example 2 is far greater than that of the embodiment 1, and the reason is that silane does not exist in the comparative example 2, so that the friction coefficient between the coated jacquard threads in the comparative example 2 and the jacquard mesh plate and the sea bed plate above is large, and the heat generated in the motion process is greatly increased, so that the service life of the jacquard mesh plate and the sea bed plate above is shortened.
Comparative example 3
A method for preparing coated jacquard thread for jacquard loom, its process is basically the same as example 1, the difference is that not add two kinds of amino silicone oil in step (1), do not have finishing process and heat crosslinking of step (4) of step (3); the number of abrasion breakage of the covered jacquard thread for the jacquard machine obtained in comparative example 3 was 32.3 ten thousand. After the test for 3 months on the machine, the abrasion of the jacquard comber board is obvious by visual inspection.
Comparing comparative example 3 with example 1, it can be seen that the number of wear breaks of the covered jacquard thread for jacquard loom in comparative example 3 is significantly smaller than that of example 1, because the polyurethane film on the covered jacquard thread in comparative example 3 contains no amino silicone oil and no coating layer, and when rubbed to the layer of polyurethane film, the friction coefficient is greater than in the same case of example 1, making the polyurethane film more easily worn, and therefore the number of wear breaks of the covered jacquard thread is smaller.
The coated jacquard threads in the embodiment 1 and the comparative example 3 are used on a jacquard loom, under the same use condition, the damage degree of the jacquard mesh plate and the sea bed plate in the comparative example 3 is far greater than that of the embodiment 1, and the same reason is that no amino silicone oil and no coating layer exist in the comparative example 3, so that the friction coefficient between the coated jacquard threads in the comparative example 3 and the jacquard mesh plate and the sea bed plate above the jacquard mesh plate is large, and the heat generated in the motion process is greatly increased, so that the service life of the jacquard mesh plate and the sea bed plate above the jacquard mesh plate is shortened.
Example 2
A method for preparing a coated jacquard thread for a jacquard loom comprises the following steps:
(1) preparation of silicon-containing thermoplastic polyurethane: firstly, heating DEG/PA-2000 and PEA-2000 to 74 ℃, heating MDI to 72 ℃, heating BDO and silane (N-aminoethyl-3-aminopropylmethyldimethoxysilane) to 47 ℃, metering and mixing the reaction raw materials, and then sending the mixture into a double-screw extruder with the temperature of 160 ℃ for extrusion and granulation to obtain the silicon-containing thermoplastic polyurethane; the method comprises the following steps of (1) adding reaction raw materials in parts by weight: DEG/PA-200046 parts, PEA-200051 parts, MDI 55 parts, BDO 15 parts and silane 1.1 parts; the Shore A hardness of the silicon-containing thermoplastic polyurethane is 85;
(2) carrying out wire merging, primary twisting, secondary twisting, wire stranding and coating on the high-strength activated polyester industrial yarn in sequence, wherein the coating is to coat the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane prepared in the step (1) on the surface of the high-strength activated polyester industrial yarn (the total titer is 900dtex, and the breaking strength is 8.34 cN/dtex); wherein the mass ratio of the amino silicone oil A to the amino silicone oil B is 29:71, the mass ratio of the total mass of the amino silicone oil A and the amino silicone oil B to the silicon-containing thermoplastic polyurethane is 1.8:100, and the mass ratio of the silicon-containing thermoplastic polyurethane to the high-strength activated polyester industrial yarn is 12: 100;
the coating process comprises the following steps: the high-strength activated polyester industrial yarn which passes through the stranded wire penetrates into a central hole of a screw extruder coating die head, slices, amino silicone oil A and amino silicone oil B which are prepared by the method are melted by the screw extruder at 190 ℃ and then flow into the coating die head in a metering mode, the high-strength activated polyester industrial yarn stranded wire of the central hole is coated by melt flowing out of the die head and then simultaneously extruded, and the high-strength activated polyester industrial yarn stranded wire is cooled, formed and wound through a water cooling tank to prepare the coated jacquard yarn with a skin-core structure.
The preparation process of the amino silicone oil A comprises the following steps: adding 86 parts by weight of octamethylcyclotetrasiloxane, 6.5 parts by weight of 3-aminopropylmethyldiethoxysilane and 0.016 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 95 ℃, reacting at constant temperature for 3.5h, and vacuumizing (2500Pa) to remove impurities to obtain amino silicone oil A with viscosity of 9300mPa & s and ammonia value of 0.91;
the preparation process of the amino silicone oil B comprises the following steps: adding 89 parts by weight of octamethylcyclotetrasiloxane, 10.7 parts by weight of diamino coupling agent Q-220 and 0.009 parts by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 95 ℃, reacting at constant temperature for 4 hours, and vacuumizing (1700Pa) to remove impurities to obtain amino silicone oil B with the viscosity of 21000mPa & s and the ammonia value of 1.31;
(3) finishing: amino silicone oil C (OFX-8040A, the ammonia value is 0.6, and the viscosity is 1000mPa & s) is arranged on the surface of the stripping line with the skin-core structure of the high-strength activated polyester industrial yarn coated with the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane; the finishing amount of amino silicone oil was 3.4 wt%;
(4) the heat treatment is carried out at the temperature of 153 ℃ to initiate the self-crosslinking of the amino silicone oil C.
The coating jacquard yarn for the jacquard loom prepared in the steps (1) to (4) has a multilayer structure, wherein a core layer is high-strength activated polyester industrial yarn, a skin layer is a mixture of silicon-containing thermoplastic polyurethane, amino silicone oil A and amino silicone oil B, and a coating layer is amino silicone oil C; silicon-containing groups in the silicon-containing thermoplastic polyurethane are enriched on the outer edge of the skin layer, the amino silicone oil A and the amino silicone oil B are dispersed in the skin layer, the amino silicone oil C forms a film with a net structure by self-crosslinking on the outer surface of the skin layer, the diameter of a coating jacquard thread for the jacquard loom is 0.6mm, the length of unit mass is 2400m/kg, and the number of abrasion and breakage is 118 ten thousand; the jacquard comber board is not abraded by visual inspection after 12 months of computer test.
Example 3
A method for preparing a coated jacquard thread for a jacquard loom comprises the following steps:
(1) preparation of silicon-containing thermoplastic polyurethane: firstly, heating DEG/PA-2000 and PEA-2000 to 78 ℃, heating MDI to 74 ℃, heating BDO and silane (3-aminopropylmethyldimethoxysilane) to 49 ℃, metering and mixing the reaction raw materials, and then sending the mixture into a double-screw extruder with the temperature of 170 ℃ for extrusion and granulation to obtain the silicon-containing thermoplastic polyurethane; the method comprises the following steps of (1) adding reaction raw materials in parts by weight: DEG/PA-200047 parts, PEA-200052 parts, MDI 56 parts, BDO 15 parts and silane 1.2 parts; the Shore A hardness of the silicon-containing thermoplastic polyurethane is 88;
(2) sequentially carrying out wire mixing, primary twisting, secondary twisting, wire twisting and coating on the high-strength activated polyester industrial yarn, wherein the coating is to coat the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane prepared in the step (1) on the surface of the high-strength activated polyester industrial yarn (the total fineness is 1100dtex, and the breaking strength is 8.39 cN/dtex); wherein the mass ratio of the amino silicone oil A to the amino silicone oil B is 30:70, the mass ratio of the total mass of the amino silicone oil A and the amino silicone oil B to the silicon-containing thermoplastic polyurethane is 2:100, and the mass ratio of the silicon-containing thermoplastic polyurethane to the high-strength activated polyester industrial yarn is 13.5: 100;
the coating process comprises the following steps: the high-strength activated polyester industrial yarn which passes through the stranded wire penetrates into a center hole of a screw extruder coating die head, slices, amino silicone oil A and amino silicone oil B which are prepared by the method are melted by the screw extruder at 192 ℃ and then flow into the coating die head in a metering mode, the high-strength activated polyester industrial yarn stranded wire of the center hole is coated by melt flowing out of the die head and then simultaneously extruded, and the high-strength activated polyester industrial yarn stranded wire is cooled, formed and wound through a water cooling tank to prepare the coated jacquard yarn with a skin-core structure.
The preparation process of the amino silicone oil A comprises the following steps: adding 87 parts by weight of octamethylcyclotetrasiloxane, 7.8 parts by weight of 3-aminopropylmethyldiethoxysilane and 0.017 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 100 ℃, reacting at constant temperature for 4 hours, and vacuumizing (2000Pa) to remove impurities to obtain amino silicone oil A with viscosity of 8400mPa & s and ammonia value of 1.11;
the preparation process of the amino silicone oil B comprises the following steps: adding 90 parts by weight of octamethylcyclotetrasiloxane, 9.3 parts by weight of diamino coupling agent Q-220 and 0.01 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 100 ℃, reacting at constant temperature for 3.7h, and vacuumizing (2000Pa) to remove impurities to obtain amino silicone oil B with the viscosity of 23000mPa & s and the ammonia value of 1.28;
(3) and (3) finishing: amino silicone oil C (OFX-8803, ammonia number of 0.3 and viscosity of 1300mPa & s) is arranged on the surface of the stripping line with the skin-core structure of the high-strength activated polyester industrial yarn coated with the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane; the finishing amount of amino silicone oil was 3.9 wt%;
(4) and (3) carrying out heat treatment at the temperature of 160 ℃ to initiate self-crosslinking of the amino silicone oil C.
The coating jacquard yarn for the jacquard loom prepared in the steps (1) to (4) has a multilayer structure, wherein a core layer is high-strength activated polyester industrial yarn, a skin layer is a mixture of silicon-containing thermoplastic polyurethane, amino silicone oil A and amino silicone oil B, and a coating layer is amino silicone oil C; silicon-containing groups in the silicon-containing thermoplastic polyurethane are enriched at the outer edge of the skin layer, the amino silicone oil A and the amino silicone oil B are dispersed in the skin layer, the amino silicone oil C forms a film with a net structure by self-crosslinking on the outer surface of the skin layer, the diameter of a coating jacquard thread for the jacquard loom is 0.72mm, the length of unit mass is 2250m/kg, and the number of abrasion and breakage is 115 ten thousand; after the test for 12 months on the machine, the jacquard comber board is not abraded by visual inspection.
Example 4
A method for preparing a coated jacquard thread for a jacquard loom comprises the following steps:
(1) preparation of silicon-containing thermoplastic polyurethane: firstly, heating DEG/PA-2000 and PEA-2000 to 82 ℃, heating MDI to 75 ℃, heating BDO and silane (N-aminoethyl-3-aminopropylmethyldimethoxysilane) to 51 ℃, metering and mixing reaction raw materials, and then sending the mixture into a double-screw extruder with the temperature of 180 ℃ for extrusion and granulation to obtain silicon-containing thermoplastic polyurethane; the method comprises the following steps of (1) adding the reaction raw materials in parts by weight: DEG/PA-200048 parts, PEA-200053 parts, MDI 56 parts, BDO 16 parts and silane 1.3 parts; the hardness Shore A of the silicon-containing thermoplastic polyurethane is 86;
(2) sequentially carrying out wire mixing, primary twisting, secondary twisting, wire twisting and coating on the high-strength activated polyester industrial yarn, wherein the coating is to coat the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane prepared in the step (1) on the surface of the high-strength activated polyester industrial yarn (the total fineness is 1300dtex, and the breaking strength is 8.18 cN/dtex); wherein the mass ratio of the amino silicone oil A to the amino silicone oil B is 28:72, the mass ratio of the total mass of the amino silicone oil A and the amino silicone oil B to the silicon-containing thermoplastic polyurethane is 2.2:100, and the mass ratio of the silicon-containing thermoplastic polyurethane to the high-strength activated polyester industrial yarn is 14: 100;
the coating process comprises the following steps: the high-strength activated polyester industrial yarn which passes through the stranded wire penetrates into a central hole of a screw extruder coating die head, slices, amino silicone oil A and amino silicone oil B which are prepared by the method are melted by the screw extruder at 210 ℃ and then flow into the coating die head in a metering mode, the high-strength activated polyester industrial yarn stranded wire of the central hole is coated by melt flowing out of the die head and then simultaneously extruded, and the high-strength activated polyester industrial yarn stranded wire is cooled, formed and wound through a water cooling tank to prepare the coated jacquard yarn with a skin-core structure.
The preparation process of the amino silicone oil A comprises the following steps: adding 88 parts by weight of octamethylcyclotetrasiloxane, 8 parts by weight of 3-aminopropylmethyldiethoxysilane and 0.018 parts by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 100 ℃, reacting at constant temperature for 3 hours, and vacuumizing (3000Pa) to remove impurities to obtain amino silicone oil A with the viscosity of 9500mPa & s and the ammonia value of 1.16;
the preparation process of the amino silicone oil B comprises the following steps: adding 91 parts by weight of octamethylcyclotetrasiloxane, 12 parts by weight of diamino coupling agent Q-220 and 0.008 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 100 ℃, reacting at constant temperature for 3.5h, and vacuumizing (1600Pa) to remove impurities to obtain amino silicone oil B with the viscosity of 27000mPa & s and the ammonia value of 1.38;
(3) finishing: amino silicone oil C (amino silicone oil WR1300CN, ammonia value of 0.3 and viscosity of 1000mPa · s) is arranged on the surface of the stripping line with the skin-core structure of the high-strength activated polyester industrial yarn coated with the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane; the finishing amount of amino silicone oil was 4.2 wt%;
(4) and (3) carrying out heat treatment at the temperature of 165 ℃ to initiate self-crosslinking of the amino silicone oil C.
The coating jacquard thread for the jacquard loom prepared according to the steps (1) to (4) has a multilayer structure, wherein a core layer is high-strength activated polyester industrial yarn, a skin layer is a mixture of silicon-containing thermoplastic polyurethane, amino silicone oil A and amino silicone oil B, and a coating layer is amino silicone oil C; silicon-containing groups in the silicon-containing thermoplastic polyurethane are enriched at the outer edge of the skin layer, the amino silicone oil A and the amino silicone oil B are dispersed in the skin layer, the amino silicone oil C forms a film with a net structure by self-crosslinking on the outer surface of the skin layer, the diameter of a coating jacquard thread for the jacquard loom is 0.8mm, the length of unit mass is 1850m/kg, and the number of abrasion breakage is 117 ten thousand; the jacquard comber board is not abraded by visual inspection after 12 months of computer test.
Example 5
A method for preparing a coated jacquard thread for a jacquard loom comprises the following steps:
(1) preparation of silicon-containing thermoplastic polyurethane: firstly, heating DEG/PA-2000 and PEA-2000 to 84 ℃, heating MDI to 76 ℃, heating BDO and silane (3-aminopropylmethyldimethoxysilane) to 52 ℃, metering and mixing the reaction raw materials, and then sending the mixture into a double-screw extruder with the temperature of 190 ℃ for extrusion and granulation to obtain the silicon-containing thermoplastic polyurethane; the method comprises the following steps of (1) adding the reaction raw materials in parts by weight: DEG/PA-200049 parts, PEA-200054 parts, MDI 57 parts, BDO 16 parts and silane 1.4 parts; the hardness Shore A of the silicon-containing thermoplastic polyurethane is 89;
(2) carrying out wire merging, primary twisting, secondary twisting, wire stranding and coating on the high-strength activated polyester industrial yarn in sequence, wherein the coating is to coat the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane prepared in the step (1) on the surface of the high-strength activated polyester industrial yarn (the total titer is 1500dtex, and the breaking strength is 8.12 cN/dtex); wherein the mass ratio of the amino silicone oil A to the amino silicone oil B is 27:73, the mass ratio of the total mass of the amino silicone oil A and the amino silicone oil B to the silicon-containing thermoplastic polyurethane is 2.5:100, and the mass ratio of the silicon-containing thermoplastic polyurethane to the high-strength activated polyester industrial yarn is 15.5: 100;
the coating process comprises the following steps: the high-strength activated polyester industrial yarn which passes through the stranded wire penetrates into a central hole of a screw extruder coating die head, slices, amino silicone oil A and amino silicone oil B which are prepared by the method are melted by the screw extruder at 220 ℃ and then flow into the coating die head in a metering mode, the high-strength activated polyester industrial yarn stranded wire of the central hole is coated by melt flowing out of the die head and then simultaneously extruded, and the high-strength activated polyester industrial yarn stranded wire is cooled, formed and wound through a water cooling tank to prepare the coated jacquard yarn with a skin-core structure.
The preparation process of the amino silicone oil A comprises the following steps: adding 89 parts by weight of octamethylcyclotetrasiloxane, 7.5 parts by weight of 3-aminopropylmethyldiethoxysilane and 0.019 parts by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 90 ℃, reacting at constant temperature for 3.5h, and vacuumizing (2000Pa) to remove impurities to obtain amino silicone oil A with the viscosity of 9100mPa & s and the ammonia value of 1.13;
the preparation process of the amino silicone oil B comprises the following steps: adding 92 parts by weight of octamethylcyclotetrasiloxane, 9 parts by weight of diamino coupling agent Q-220 and 0.01 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 93 ℃, reacting at constant temperature for 4 hours, and vacuumizing (1500Pa) to remove impurities to obtain amino silicone oil B with the viscosity of 23000mPa & s and the ammonia value of 1.18;
(3) finishing: amino silicone oil C (amino silicone oil WR1300CN, ammonia value of 0.3 and viscosity of 1000mPa · s) is arranged on the surface of the stripping line with the skin-core structure of the high-strength activated polyester industrial yarn coated with the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane; the finishing amount of amino silicone oil was 4.6 wt%;
(4) and (3) carrying out heat treatment at 168 ℃ to initiate self-crosslinking of the amino silicone oil C.
The coating jacquard thread for the jacquard loom prepared according to the steps (1) to (4) has a multilayer structure, wherein a core layer is high-strength activated polyester industrial yarn, a skin layer is a mixture of silicon-containing thermoplastic polyurethane, amino silicone oil A and amino silicone oil B, and a coating layer is amino silicone oil C; silicon-containing groups in the silicon-containing thermoplastic polyurethane are enriched at the outer edge of the skin layer, the amino silicone oil A and the amino silicone oil B are dispersed in the skin layer, the amino silicone oil C forms a film with a net structure on the outer surface of the skin layer through self-crosslinking, the diameter of a coating jacquard thread for the jacquard loom is 0.85mm, the length of unit mass is 1650m/kg, and the number of abrasion and breakage is 112 ten thousand; the jacquard comber board is not abraded by visual inspection after 12 months of computer test.
Example 6
A method for preparing a coated jacquard thread for a jacquard loom comprises the following steps:
(1) preparation of silicon-containing thermoplastic polyurethane: firstly, heating DEG/PA-2000 and PEA-2000 to 86 ℃, heating MDI to 78 ℃, heating BDO and silane (N-aminoethyl-3-aminopropylmethyldimethoxysilane) to 53 ℃, metering and mixing reaction raw materials, and then sending the mixture into a double-screw extruder with the temperature of 200 ℃ for extrusion and granulation to obtain silicon-containing thermoplastic polyurethane; the method comprises the following steps of (1) adding the reaction raw materials in parts by weight: DEG/PA-200050 parts, PEA-200055 parts, MDI 57 parts, BDO 16 parts and silane 1.5 parts; the hardness Shore A of the silicon-containing thermoplastic polyurethane is 87;
(2) sequentially carrying out wire mixing, primary twisting, secondary twisting, wire twisting and coating on the high-strength activated polyester industrial yarn, wherein the coating is to coat the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane prepared in the step (1) on the surface of the high-strength activated polyester industrial yarn (the total fineness is 1600dtex, and the breaking strength is 8.55 cN/dtex); wherein the mass ratio of the amino silicone oil A to the amino silicone oil B is 26:74, the mass ratio of the total mass of the amino silicone oil A and the amino silicone oil B to the silicon-containing thermoplastic polyurethane is 2.7:100, and the mass ratio of the silicon-containing thermoplastic polyurethane to the high-strength activated polyester industrial yarn is 16: 100;
the coating process comprises the following steps: the high-strength activated polyester industrial yarn which passes through the stranded wire penetrates into a center hole of a screw extruder coating die head, the slice, the amino silicone oil A and the amino silicone oil B which are prepared by the method are melted by the screw extruder at the temperature of 200 ℃ and then flow into the coating die head in a metering mode, the melt flowing out of the die head coats the high-strength activated polyester industrial yarn stranded wire of the center hole and then is simultaneously extruded, and the high-strength activated polyester industrial yarn stranded wire is cooled, formed and wound through a water cooling tank to prepare the coated jacquard yarn with a skin-core structure.
The preparation process of the amino silicone oil A comprises the following steps: adding 90 parts by weight of octamethylcyclotetrasiloxane, 7.3 parts by weight of 3-aminopropylmethyldiethoxysilane and 0.2 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 95 ℃, reacting at a constant temperature for 4 hours, and vacuumizing (2300Pa) to remove impurities to obtain amino silicone oil A with the viscosity of 8300mPa & s and the ammonia value of 0.83;
the preparation process of the amino silicone oil B comprises the following steps: adding 88 parts by weight of octamethylcyclotetrasiloxane, 8 parts by weight of diamino coupling agent Q-220 and 0.009 parts by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 95 ℃, reacting at constant temperature for 3.6h, and vacuumizing (1500Pa) to remove impurities to obtain amino silicone oil B with the viscosity of 22000mPa & s and the ammonia value of 1.08;
(3) and (3) finishing: amino silicone oil C (OFX-8803, ammonia number of 0.3 and viscosity of 1300mPa & s) is arranged on the surface of the stripping line with the skin-core structure of the high-strength activated polyester industrial yarn coated with the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane; the finishing amount of amino silicone oil was 4.9 wt%;
(4) and (3) carrying out heat treatment at the temperature of 169 ℃ to initiate self-crosslinking of the amino silicone oil C.
The coating jacquard yarn for the jacquard loom prepared in the steps (1) to (4) has a multilayer structure, wherein a core layer is high-strength activated polyester industrial yarn, a skin layer is a mixture of silicon-containing thermoplastic polyurethane, amino silicone oil A and amino silicone oil B, and a coating layer is amino silicone oil C; silicon-containing groups in the silicon-containing thermoplastic polyurethane are enriched at the outer edge of the skin layer, the amino silicone oil A and the amino silicone oil B are dispersed in the skin layer, the amino silicone oil C forms a film with a net structure by self-crosslinking on the outer surface of the skin layer, the diameter of a coating jacquard thread for the jacquard loom is 1.2mm, the length of unit mass is 1050m/kg, and the number of abrasion and breakage is 120 ten thousand; after the test for 12 months on the machine, the jacquard comber board is not abraded by visual inspection.
Example 7
A method for preparing a coated jacquard thread for a jacquard loom comprises the following steps:
(1) preparation of silicon-containing thermoplastic polyurethane: firstly, heating DEG/PA-2000 and PEA-2000 to 88 ℃, heating MDI to 78 ℃, heating BDO and silane (3-aminopropylmethyldimethoxysilane) to 54 ℃, metering and mixing the reaction raw materials, and then sending the mixture into a double-screw extruder with the temperature of 220 ℃ for extrusion and granulation to obtain the silicon-containing thermoplastic polyurethane; the method comprises the following steps of (1) adding reaction raw materials in parts by weight: DEG/PA-200047 parts, PEA-200052 parts, MDI 56 parts, BDO 15 parts and silane 1.3 parts; the hardness Shore A of the silicon-containing thermoplastic polyurethane is 90;
(2) sequentially carrying out wire mixing, primary twisting, secondary twisting, wire twisting and coating on the high-strength activated polyester industrial yarn, wherein the coating is to coat the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane prepared in the step (1) on the surface of the high-strength activated polyester industrial yarn (the total fineness is 1750dtex, and the breaking strength is 8.26 cN/dtex); wherein the mass ratio of the amino silicone oil A to the amino silicone oil B is 25:75, the mass ratio of the total mass of the amino silicone oil A and the amino silicone oil B to the silicon-containing thermoplastic polyurethane is 2.9:100, and the mass ratio of the silicon-containing thermoplastic polyurethane to the high-strength activated polyester industrial yarn is 18: 100;
the coating process comprises the following steps: the high-strength activated polyester industrial yarn which passes through the stranded wire penetrates into a central hole of a screw extruder coating die head, slices, amino silicone oil A and amino silicone oil B which are prepared by the method are melted by the screw extruder at 196 ℃ and then flow into the coating die head in a metering mode, the high-strength activated polyester industrial yarn stranded wire of the central hole is coated by melt flowing out of the die head and then simultaneously extruded, and the high-strength activated polyester industrial yarn stranded wire is cooled, formed and wound through a water cooling tank to prepare the coated jacquard yarn with a skin-core structure.
The preparation process of the amino silicone oil A comprises the following steps: adding 85 parts by weight of octamethylcyclotetrasiloxane, 8.3 parts by weight of 3-aminopropylmethyldiethoxysilane and 0.2 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 100 ℃, reacting at constant temperature for 4 hours, and vacuumizing (2700Pa) to remove impurities to obtain amino silicone oil A with the viscosity of 9800mPa & s and the ammonia value of 1.13;
the preparation process of the amino silicone oil B comprises the following steps: adding 90 parts by weight of octamethylcyclotetrasiloxane, 11.6 parts by weight of diamino coupling agent Q-220 and 0.009 parts by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 90 ℃, reacting at constant temperature for 3.8h, and vacuumizing (1600Pa) to remove impurities to obtain amino silicone oil B with the viscosity of 27000mPa & s and the ammonia value of 1.36;
(3) finishing: amino silicone oil C (OFX-8803, ammonia number of 0.3 and viscosity of 1300mPa & s) is arranged on the surface of the stripping line with the skin-core structure of the high-strength activated polyester industrial yarn coated with the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane; the finishing amount of amino silicone oil is 5 wt%;
(4) the heat treatment is carried out at the temperature of 174 ℃, and the self-crosslinking of the amino silicone oil C is initiated.
The coating jacquard thread for the jacquard loom prepared according to the steps (1) to (4) has a multilayer structure, wherein a core layer is high-strength activated polyester industrial yarn, a skin layer is a mixture of silicon-containing thermoplastic polyurethane, amino silicone oil A and amino silicone oil B, and a coating layer is amino silicone oil C; silicon-containing groups in the silicon-containing thermoplastic polyurethane are enriched at the outer edge of the skin layer, the amino silicone oil A and the amino silicone oil B are dispersed in the skin layer, the amino silicone oil C forms a film with a net structure by self-crosslinking on the outer surface of the skin layer, the diameter of a coating jacquard thread for the jacquard loom is 1.4mm, the length of unit mass is 900m/kg, and the number of abrasion and breakage is 123 ten thousand; the jacquard comber board is not abraded by visual inspection after 12 months of computer test.
Example 8
A method for preparing a coated jacquard thread for a jacquard loom comprises the following steps:
(1) preparation of silicon-containing thermoplastic polyurethane: firstly, heating DEG/PA-2000 and PEA-2000 to 90 ℃, heating MDI to 80 ℃, heating BDO and silane (N-aminoethyl-3-aminopropylmethyldimethoxysilane) to 55 ℃, metering and mixing reaction raw materials, and then sending the mixture into a double-screw extruder with the temperature of 250 ℃ for extrusion and granulation to obtain silicon-containing thermoplastic polyurethane; the method comprises the following steps of (1) adding reaction raw materials in parts by weight: DEG/PA-200047 parts, PEA-200053 parts, MDI 56 parts, BDO 15 parts and silane 1.2 parts; the Shore A hardness of the silicon-containing thermoplastic polyurethane is 88;
(2) carrying out wire merging, primary twisting, secondary twisting, wire stranding and coating on the high-strength activated polyester industrial yarn in sequence, wherein the coating is to coat the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane prepared in the step (1) on the surface of the high-strength activated polyester industrial yarn (the total titer is 2000dtex, and the breaking strength is 8.17 cN/dtex); wherein the mass ratio of the amino silicone oil A to the amino silicone oil B is 26:74, the mass ratio of the total mass of the amino silicone oil A and the amino silicone oil B to the silicon-containing thermoplastic polyurethane is 3:100, and the mass ratio of the silicon-containing thermoplastic polyurethane to the high-strength activated polyester industrial yarn is 20: 100;
the coating process comprises the following steps: the high-strength activated polyester industrial yarn which passes through the stranded wire penetrates into a center hole of a screw extruder cladding die head, the slice, the amino silicone oil A and the amino silicone oil B which are prepared by the method are melted by the screw extruder at 232 ℃ and then flow into the cladding die head in a metering mode, the melt which flows out of the die head wraps the high-strength activated polyester industrial yarn stranded wire of the center hole and then is extruded out simultaneously, and the high-strength activated polyester industrial yarn stranded wire is cooled, formed and wound through a water cooling tank to prepare the cladding drawing wire with a skin-core structure.
The preparation process of the amino silicone oil A comprises the following steps: adding 90 parts by weight of octamethylcyclotetrasiloxane, 6.8 parts by weight of 3-aminopropylmethyldiethoxysilane and 0.15 part by weight of tetramethylammonium hydroxide serving as a catalyst into a reactor, stirring, heating to 90 ℃, reacting at constant temperature for 3 hours, and vacuumizing (2400Pa) to remove impurities to obtain amino silicone oil A with the viscosity of 8800mPa & s and the ammonia value of 1.04;
the preparation process of the amino silicone oil B comprises the following steps: adding 91 parts by weight of octamethylcyclotetrasiloxane, 11.8 parts by weight of diamino coupling agent Q-220 and 0.01 part by weight of catalyst tetramethylammonium hydroxide into a reactor, stirring, heating to 100 ℃, reacting at constant temperature for 4 hours, and vacuumizing (1500Pa) to remove impurities to obtain amino silicone oil B with the viscosity of 25000mPa & s and the ammonia value of 1.32;
(3) and (3) finishing: amino silicone oil C (OFX-8803, ammonia number of 0.3 and viscosity of 1300mPa & s) is arranged on the surface of the stripping line with the skin-core structure of the high-strength activated polyester industrial yarn coated with the mixture of the amino silicone oil A, the amino silicone oil B and the silicon-containing thermoplastic polyurethane; the finishing amount of amino silicone oil was 4.3 wt%;
(4) and (3) carrying out heat treatment at the temperature of 180 ℃ to initiate self-crosslinking of the amino silicone oil C.
The coating jacquard thread for the jacquard loom prepared according to the steps (1) to (4) has a multilayer structure, wherein a core layer is high-strength activated polyester industrial yarn, a skin layer is a mixture of silicon-containing thermoplastic polyurethane, amino silicone oil A and amino silicone oil B, and a coating layer is amino silicone oil C; silicon-containing groups in the silicon-containing thermoplastic polyurethane are enriched at the outer edge of the skin layer, the amino silicone oil A and the amino silicone oil B are dispersed in the skin layer, the amino silicone oil C forms a film with a net structure by self-crosslinking on the outer surface of the skin layer, the diameter of a coating jacquard thread for the jacquard loom is 2mm, the length of unit mass is 610m/kg, and the number of abrasion and breakage is 119 ten thousand; after the test for 12 months on the machine, the jacquard comber board is not abraded by visual inspection.
Claims (10)
1. A preparation method of coated jacquard threads for jacquard weaving machines is characterized by comprising the following steps: the method comprises a coating process, a finishing process and a heat treatment process, wherein the main raw material is high-strength activated polyester industrial yarn;
the coating process is a process of coating a mixture of amino silicone oil A, amino silicone oil B and silicon-containing thermoplastic polyurethane on the surface of the high-strength activated polyester industrial yarn to form a sheath-core structure;
the mass ratio of the amino silicone oil A to the amino silicone oil B is 25-30: 70-75, the amino silicone oil A is amino silicone oil with the viscosity of 8000-10000 mPa & s and the ammonia value of 0.8-1.2, and the amino silicone oil B is amino silicone oil with the viscosity of 20000-30000 mPa & s and the ammonia value of 1.0-1.4;
the silicon-containing thermoplastic polyurethane is silane modified thermoplastic polyurethane, and the silane is 3-aminopropyl methyl dimethoxy silane or N-aminoethyl-3-aminopropyl methyl dimethoxy silane;
the finishing step is a step of finishing amino silicone oil C on the surface of the skin-core structure, wherein the amino silicone oil C is amino silicone oil with the viscosity of 1000-2000 mPa & s and the ammonia value of 0.2-0.6;
after finishing working procedure, carrying out heat treatment to initiate self-crosslinking of amino silicone oil C;
the number of wear breaks in the covered jacquard threads used in jacquard looms is greater than 107 ten thousand.
2. The method of claim 1, wherein the silicone-containing thermoplastic polyurethane is prepared by the steps of: firstly, respectively heating poly phthalic anhydride diethylene glycol ester diol and PEA-2000 to 70-90 ℃, heating diphenylmethane diisocyanate to 70-80 ℃, heating 1, 4-butanediol and silane to 45-55 ℃, metering and mixing reaction raw materials, and then sending the mixture into a double-screw extruder at the temperature of 150-250 ℃ for extrusion and granulation to obtain the silicon-containing thermoplastic polyurethane.
3. The method for preparing the coated jacquard thread according to claim 2, wherein the reaction raw materials are added in the following amounts by weight: 45-50 parts of poly phthalic anhydride diethylene glycol ester, 200050-55 parts of PEA, 55-57 parts of diphenylmethane diisocyanate, 15-16 parts of 1, 4-butanediol and 1.0-1.5 parts of silane.
4. The method for preparing the coated jacquard thread for jacquard loom according to claim 3, wherein the Shore hardness of the silicon-containing thermoplastic polyurethane is 85-90A.
5. The method for preparing the coated jacquard thread for jacquard loom according to claim 1, wherein the total fineness of the high-strength activated polyester industrial yarn is 600-2000 dtex, and the breaking strength is more than or equal to 8.1 cN/dtex.
6. The preparation method of the coated jacquard yarn for the jacquard loom according to claim 1, wherein in the coating step, the mass ratio of the total mass of the amino silicone oil A and the amino silicone oil B to the silicon-containing thermoplastic polyurethane is 1.5-3.0: 100, and the mass ratio of the silicon-containing thermoplastic polyurethane to the high-strength activated polyester industrial yarn is 10-20: 100.
7. The method for preparing the coated jacquard yarn according to claim 1, wherein in the finishing step, the finishing amount of the amino silicone oil C is 3-5 wt%; the heat treatment temperature is 150-180 ℃.
8. The method for preparing the coated jacquard thread for jacquard loom according to claim 1, wherein the process flow comprises: doubling → first twist → second twist → twisting → cladding → finishing → heat treatment.
9. The covered jacquard thread for jacquard loom produced by the method for producing the covered jacquard thread according to any one of claims 1 to 8, characterized in that: the polyester fiber composite material has a multilayer structure and sequentially comprises a core layer, a skin layer and a coating layer from inside to outside, wherein the core layer is high-strength activated polyester industrial yarn, the skin layer is a mixture of silicon-containing thermoplastic polyurethane, amino silicone oil A and amino silicone oil B, and the coating layer is amino silicone oil C; the silicon-containing group in the silicon-containing thermoplastic polyurethane is enriched at the outer edge of the skin layer, the amino silicone oil A and the amino silicone oil B are dispersed in the skin layer, and the amino silicone oil C is self-crosslinked on the outer surface of the skin layer to form a film with a net structure.
10. The covered jacquard thread according to claim 9, wherein the covered jacquard thread has a diameter of 0.5 to 2.0mm, a length per unit mass of 3150 to 610m/kg, and a number of wear and tear cycles of more than 107 ten thousand.
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Denomination of invention: A coated jacquard thread for jacquard looms and its preparation method Effective date of registration: 20231213 Granted publication date: 20220719 Pledgee: Zhejiang Jiashan rural commercial bank Limited by Share Ltd. science and technology sub branch Pledgor: Jiaxing Yuanzhi New Material Technology Co.,Ltd. Registration number: Y2023980071119 |