CN115012236A - Low-creep low-wear mesh wire and preparation method and application thereof - Google Patents
Low-creep low-wear mesh wire and preparation method and application thereof Download PDFInfo
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- CN115012236A CN115012236A CN202210801444.XA CN202210801444A CN115012236A CN 115012236 A CN115012236 A CN 115012236A CN 202210801444 A CN202210801444 A CN 202210801444A CN 115012236 A CN115012236 A CN 115012236A
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- weight polyethylene
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims abstract description 72
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims abstract description 72
- 239000002114 nanocomposite Substances 0.000 claims abstract description 45
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 42
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 42
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 42
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 42
- 229910000077 silane Inorganic materials 0.000 claims abstract description 42
- 238000004132 cross linking Methods 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 30
- 239000002994 raw material Substances 0.000 claims description 19
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 13
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 13
- 239000003999 initiator Substances 0.000 claims description 12
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 11
- 241000779819 Syncarpia glomulifera Species 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 10
- 239000001739 pinus spp. Substances 0.000 claims description 10
- 229940036248 turpentine Drugs 0.000 claims description 10
- 239000004014 plasticizer Substances 0.000 claims description 9
- 238000009941 weaving Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 5
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 5
- 238000004513 sizing Methods 0.000 claims description 4
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 3
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- XPEMYYBBHOILIJ-UHFFFAOYSA-N trimethyl(trimethylsilylperoxy)silane Chemical compound C[Si](C)(C)OO[Si](C)(C)C XPEMYYBBHOILIJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 28
- 238000005299 abrasion Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 5
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 17
- 239000000155 melt Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- NXQMCAOPTPLPRL-UHFFFAOYSA-N 2-(2-benzoyloxyethoxy)ethyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OCCOCCOC(=O)C1=CC=CC=C1 NXQMCAOPTPLPRL-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000009360 aquaculture Methods 0.000 description 4
- 244000144974 aquaculture Species 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000001293 FEMA 3089 Substances 0.000 description 2
- 229920010741 Ultra High Molecular Weight Polyethylene (UHMWPE) Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006482 condensation reaction Methods 0.000 description 2
- 239000012792 core layer Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000009998 heat setting Methods 0.000 description 2
- ARYZCSRUUPFYMY-UHFFFAOYSA-N methoxysilane Chemical group CO[SiH3] ARYZCSRUUPFYMY-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000196171 Hydrodictyon reticulatum Species 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 208000034699 Vitreous floaters Diseases 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
- D07B1/025—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
- D07B1/04—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics with a core of fibres or filaments arranged parallel to the centre line
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2083—Jackets or coverings
- D07B2201/209—Jackets or coverings comprising braided structures
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/201—Polyolefins
- D07B2205/2014—High performance polyolefins, e.g. Dyneema or Spectra
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/2071—Fluor resins
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The invention provides a low-creep low-wear net steel wire and a preparation method and application thereof, belonging to the technical field of deep and open sea culture facilities, and comprising a rope core and a skin layer wrapped outside the rope core; the rope core is formed by processing silane cross-linked ultra-high molecular weight polyethylene nano composite wires, and the skin layer is made of polytetrafluoroethylene. The invention controls the composition and the dosage of each component in the silane crosslinking ultra-high molecular weight polyethylene nano composite wire, each component has synergistic effect, the creep resistance of the composite wire is improved, and the polytetrafluoroethylene is used as the skin layer, so that the composite wire has very low surface energy and higher lubricating property, and the wear resistance of a net wire can be improved. The results of the examples show that the steady creep strain rate of the net wire provided by the invention is 35.1% when the preloading force is 50% of the breaking force of the net wire, and the strength retention rate is 90.2% after 1000 times of abrasion.
Description
Technical Field
The invention relates to the technical field of deep and far sea culture facilities, in particular to a low-creep low-wear net steel wire and a preparation method and application thereof.
Background
The ultra-high molecular weight polyethylene fiber has higher strength and modulus, and has been applied to the fields of fishing gear, aquaculture facilities and the like, such as fishing trawlnets, deep water net cages, large-scale aquaculture purse nets or algae aquaculture valve ropes and the like.
When the fishing net works in the sea, the fishing net material is influenced by constant force most of the time, at the moment, the material can generate creep deformation, the net head line extends and increases under the action of large stormy waves, the drifting damage of the net clothes is easy to cause, the net has creep deformation and structural extensibility, which are important reasons for poor stormy wave resistance of the deep and far sea aquaculture net, meanwhile, the net head line can rub against other equipment or floaters in water and the like under the action of the stormy waves, and the friction, abrasion and damage are also important factors for causing the damage of the net clothes system. To date, there is no good way in the prior art to improve the creep and abrasion resistance of mesh materials.
Disclosure of Invention
The invention aims to provide a low-creep low-wear mesh wire and a preparation method and application thereof. The mesh line provided by the invention has low creep and low wear performance.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a low-creep low-wear net steel wire, which comprises a rope core and a skin layer wrapped outside the rope core;
the rope core is processed by silane cross-linked ultra-high molecular weight polyethylene nano composite wires, and the silane cross-linked ultra-high molecular weight polyethylene nano composite wires are prepared from the following raw materials in parts by weight: 100 parts of ultrahigh molecular weight polyethylene, 0.1-0.13 part of initiator, 0.1-0.15 part of styrene, 0.2-0.26 part of vinyl trimethoxy silane, 0.2-2.2 parts of nano layered silicate, 5.3-15.5 parts of plasticizer, 0.15-0.28 part of tris (2, 4-di-tert-butyl phenyl) phosphite and 0.15-0.28 part of turpentine;
the cortex is made of polytetrafluoroethylene.
Preferably, the initiator comprises dicumyl peroxide, dibenzoyl peroxide or bis (trimethylsilyl) peroxide.
Preferably, the nano layered silicate comprises montmorillonite or mica.
The invention provides a preparation method of a low-creep low-wear net wire in the technical scheme, which comprises the following steps:
(1) mixing raw materials of the silane cross-linked ultrahigh molecular weight polyethylene nano composite filament, and then sequentially carrying out melt extrusion, cooling, pre-drafting, sizing and cross-linking to obtain the silane cross-linked ultrahigh molecular weight polyethylene nano composite filament;
(2) stranding the nano composite wires obtained in the step (1) after primary twisting to obtain rope cores;
(3) twisting the stranded polytetrafluoroethylene fibers to respectively obtain polytetrafluoroethylene rope yarns in an S twisting direction and polytetrafluoroethylene rope yarns in a Z twisting direction;
(4) and (3) weaving the S-twist-direction polytetrafluoroethylene rope yarns and the Z-twist-direction polytetrafluoroethylene rope yarns obtained in the step (3) into a skin layer on the surface of the rope core obtained in the step (2) to obtain the low-creep low-wear net steel wire.
Preferably, the temperature for shaping in the step (1) is 115-128 ℃.
Preferably, the total multiple of the drafting in the step (1) is 15-20 times.
Preferably, the crosslinking temperature in the step (1) is 90-95 ℃, and the crosslinking time is 48-58 h.
Preferably, the internal twist of the primary twist in the step (2) is 6-15T/m.
Preferably, the rope core in the step (2) is in a Z twisting direction, and the external twist of the rope core is 40-128T/m.
The invention also provides the application of the low-creep low-wear net wire line or the low-creep low-wear net wire prepared by the preparation method in the technical scheme in fishing gear.
The invention provides a low-creep low-wear net steel wire, which comprises a rope core and a skin layer wrapped outside the rope core; the rope core is processed by silane cross-linked ultra-high molecular weight polyethylene nano composite wires, and the silane cross-linked ultra-high molecular weight polyethylene nano composite wires are prepared from the following raw materials in parts by weight: 100 parts of ultrahigh molecular weight polyethylene, 0.1-0.13 part of initiator, 0.1-0.15 part of styrene, 0.2-0.26 part of vinyl trimethoxy silane, 0.2-2.2 parts of nano layered silicate, 5.3-15.5 parts of plasticizer, 0.15-0.28 part of tris (2, 4-di-tert-butyl phenyl) phosphite and 0.15-0.28 part of turpentine; the cortex is made of polytetrafluoroethylene. The ultrahigh molecular weight polyethylene in the silane crosslinked ultrahigh molecular weight polyethylene nano composite filament has higher strength and modulus, styrene is used as a comonomer to improve the graft copolymerization efficiency of the composite filament, nano layered silicate is used as a reinforcing material to improve the mechanical property of the composite filament, vinyl trimethoxy silane can perform crosslinking reaction to improve the crosslinking density of the composite filament, the composition and the dosage of each component are controlled, the components act synergistically to improve the creep resistance of the composite filament, and polytetrafluoroethylene is used as a skin layer, so that the silane crosslinked ultrahigh molecular weight polyethylene nano composite filament has very low surface energy and higher lubricating property, and the wear resistance of a mesh steel wire can be improved. The results of the examples show that the steady creep strain rate of the net line provided by the invention is 35.1% under the condition that the loading force of the net line is 50% of the breaking strength, and the strength retention rate is 90.2% after 1000 times of abrasion.
Detailed Description
The invention provides a low-creep low-wear net steel wire, which comprises a rope core and a skin layer wrapped outside the rope core;
the rope core is processed by silane cross-linked ultra-high molecular weight polyethylene nano composite wires, and the silane cross-linked ultra-high molecular weight polyethylene nano composite wires are prepared from the following raw materials in parts by weight: 100 parts of ultrahigh molecular weight polyethylene, 0.1-0.13 part of initiator, 0.1-0.15 part of styrene, 0.2-0.26 part of vinyl trimethoxy silane, 0.2-2.2 parts of nano layered silicate, 5.3-15.5 parts of plasticizer, 0.15-0.28 part of tris (2, 4-di-tert-butyl phenyl) phosphite and 0.15-0.28 part of turpentine;
the cortex is made of polytetrafluoroethylene.
The low-creep low-wear mesh line provided by the invention comprises a rope core.
In the invention, the rope core is processed by silane cross-linked ultra-high molecular weight polyethylene nano composite wires.
In the invention, the silane cross-linked ultra-high molecular weight polyethylene nano composite wire is prepared from the following raw materials in parts by weight: 100 parts of ultra-high molecular weight polyethylene, 0.1-0.13 part of initiator, 0.1-0.15 part of styrene, 0.2-0.26 part of vinyl trimethoxy silane, 0.2-2.2 parts of nano layered silicate, 5.3-15.5 parts of plasticizer, 0.15-0.28 part of tris (2, 4-di-tert-butyl phenyl) phosphite and 0.15-0.28 part of turpentine.
The raw materials for preparing the silane crosslinked ultra-high molecular weight polyethylene nano composite filament comprise 100 parts by weight of ultra-high molecular weight polyethylene. In the invention, the ultra-high molecular weight polyethylene has higher strength and modulus, and can improve the mechanical property of the net wire.
In the invention, the melt index of the ultra-high molecular weight polyethylene is preferably 0.06-0.25 g/10min, and the molecular weight of the ultra-high molecular weight polyethylene is preferably 240-350 ten thousand. The invention limits the melt index and molecular weight of the ultra-high molecular weight polyethylene within the above range, so that the melted ultra-high molecular weight polyethylene has better fluidity and is more beneficial to melt spinning processing.
The raw materials for preparing the silane crosslinked ultra-high molecular weight polyethylene nano composite filament comprise 0.1-0.13 part of initiator by 100 parts of ultra-high molecular weight polyethylene, and preferably 0.11-0.12 part of initiator. In the invention, the initiator is used for initiating the crosslinking reaction of the ultrahigh molecular weight polyethylene and the styrene. The invention limits the dosage of the initiator in the range, can ensure that the ultrahigh molecular weight polyethylene and the styrene fully generate crosslinking reaction and have proper crosslinking rate, improve the crosslinking density and further improve the creep resistance of the net wire.
In the present invention, the initiator preferably comprises dicumyl peroxide, dibenzoyl peroxide or bis (trimethylsilyl) peroxide.
The raw materials for preparing the silane crosslinked ultra-high molecular weight polyethylene nano composite filament comprise 0.1-0.15 part of styrene, preferably 0.11-0.14 part of styrene, and more preferably 0.12-0.13 part of styrene by taking the mass of the ultra-high molecular weight polyethylene as 100 parts. In the invention, the styrene is used as a graft comonomer, so that the graft copolymerization efficiency of the composite yarn can be improved, and the creep resistance of the composite yarn can be improved. The invention limits the dosage of the styrene in the range, can ensure that the composite yarn has higher graft copolymerization efficiency, and further improves the creep resistance of the composite yarn.
The raw material for preparing the silane cross-linked ultra-high molecular weight polyethylene nano composite filament comprises 0.2-0.26 part of vinyl trimethoxy silane, preferably 0.21-0.25 part, more preferably 0.22-0.24 part and most preferably 0.23 part by weight of ultra-high molecular weight polyethylene. In the invention, the methoxysilane group in the vinyltrimethoxysilane is subjected to hydrolytic condensation reaction in the crosslinking process to form a crosslinking structure, so that the crosslinking density of the composite yarn is improved, and the creep resistance of the composite yarn is improved. The invention limits the dosage of the vinyltrimethoxysilane within the range, and can further compound the crosslinking density and creep resistance of the yarn.
The raw materials for preparing the silane crosslinked ultra-high molecular weight polyethylene nano composite filament comprise 0.2-2.2 parts of nano layered silicate, preferably 0.5-2.0 parts, and more preferably 1-1.5 parts by weight of ultra-high molecular weight polyethylene (UHMWPE) based on 100 parts by weight. In the invention, the nano layered silicate has a lamellar structure, on one hand, the mobility of a system is increased by sliding among lamellae, and on the other hand, the nano lamellae are directionally arranged along the direction of drafting orientation, so that the mechanical strength of the composite filament is improved.
In the present invention, the nano layered silicate preferably includes montmorillonite or mica.
In the invention, the surface area of the nano-layered silicate is preferably 180-280 m 2 /g。
The invention limits the dosage, the type and the surface area of the nano layered silicate in the range, and can further improve the mechanical property and the creep resistance of the composite filament.
The raw materials for preparing the silane crosslinked ultra-high molecular weight polyethylene nano composite filament comprise 5.3-15.5 parts of plasticizer, preferably 5.5-15 parts, and more preferably 8-12 parts by weight of ultra-high molecular weight polyethylene (UHMWPE) based on 100 parts by weight. In the present invention, the plasticizer preferably includes diethylene glycol dibenzoate. In the present invention, the plasticizer can improve the plasticity of the composite yarn. The invention limits the dosage of the plasticizer within the range, so that the composite yarn has better plasticity and better strength.
The raw materials for preparing the silane crosslinked ultra-high molecular weight polyethylene nano composite filament comprise 0.15-0.28 part of tris (2, 4-di-tert-butyl phenyl) phosphite, preferably 0.18-0.25 part, and more preferably 0.2-0.22 part by weight of ultra-high molecular weight polyethylene. In the present invention, the mass content of volatile components in the tris (2, 4-di-tert-butylphenyl) phosphite is preferably 0.5% or less, and the mass content of ash in the tris (2, 4-di-tert-butylphenyl) phosphite is preferably 0.1% or less.
In the present invention, the tris (2, 4-di-tert-butylphenyl) phosphite can improve the processing fluidity of each component. According to the invention, the dosage of the tris (2, 4-di-tert-butyl phenyl) phosphite is limited within the range, so that each component has better fluidity, and the melt extrusion is facilitated.
The raw materials for preparing the silane crosslinked ultra-high molecular weight polyethylene nano composite filament comprise 0.15-0.28 part of turpentine, preferably 0.18-0.25 part of turpentine, and more preferably 0.2-0.22 part of turpentine by taking the mass of ultra-high molecular weight polyethylene as 100 parts. In the present invention, the turpentine can improve the surface smoothness of the composite yarn. The invention limits the dosage of the turpentine oil within the range, and can ensure that the surface of the composite yarn is smoother.
The invention controls the composition and the dosage of each component in the composite wire, and the components have synergistic effect, thereby improving the creep resistance of the composite wire.
The low-creep low-wear net steel wire provided by the invention also comprises a skin layer wrapped outside the rope core.
In the invention, the material of the skin layer is polytetrafluoroethylene.
In the invention, the polytetrafluoroethylene has very low surface energy and high lubricating property, gives the surface of the mesh wire self-lubricating property, is not easy to adhere pollutants, and can improve the wear resistance of the mesh wire.
The low-creep low-wear mesh line comprises the rope core and the skin layer wrapped outside the rope core, wherein the rope core has good creep resistance, the skin layer has good wear resistance, and the rope core and the skin layer are combined to ensure that the mesh line has low creep resistance and low wear resistance.
The invention provides a preparation method of a low-creep low-wear net wire in the technical scheme, which comprises the following steps:
(1) mixing raw materials of the silane cross-linked ultrahigh molecular weight polyethylene nano composite filament, and then sequentially carrying out melt extrusion, cooling, pre-drafting, sizing and cross-linking to obtain the silane cross-linked ultrahigh molecular weight polyethylene nano composite filament;
(2) stranding the nano composite wires obtained in the step (1) after primary twisting to obtain rope cores;
(3) twisting the stranded polytetrafluoroethylene fibers to respectively obtain polytetrafluoroethylene rope yarns in an S twisting direction and polytetrafluoroethylene rope yarns in a Z twisting direction;
(4) and (3) weaving the S-twisted polytetrafluoroethylene rope yarns and the Z-twisted polytetrafluoroethylene rope yarns obtained in the step (3) into a skin layer on the surface of the rope core obtained in the step (2) to obtain the low-creep low-wear net steel wire.
The raw materials of the silane cross-linked ultrahigh molecular weight polyethylene nano composite filament are mixed and then sequentially subjected to melt extrusion, cooling, pre-drafting, sizing and cross-linking to obtain the silane cross-linked ultrahigh molecular weight polyethylene nano composite filament.
In the present invention, the mixing is preferably carried out in a high-speed kneading pot; the mixing rotating speed is preferably 400-600 rpm, and more preferably 500 rpm; the mixing time is preferably 15-25 min, and more preferably 20 min. The invention limits the mixing speed and time within the range, and can ensure that the raw materials are mixed more uniformly.
In the present invention, the pre-mixing is preferably also included. The operation of the premixing is not particularly limited in the present invention, and a premixing technical scheme known to those skilled in the art may be adopted.
In the present invention, the process parameters of the melt extrusion are preferably: the first temperature zone is preferably 170-190 ℃, and more preferably 180 ℃; the second temperature zone is preferably 310-360 ℃, and more preferably 330-350 ℃; the third temperature zone is preferably 310-360 ℃, and more preferably 330-350 ℃; the fourth temperature zone is preferably 320-370 ℃, and more preferably 340-350 ℃; the fifth temperature zone is preferably 320-370 ℃, and more preferably 340-350 ℃; the sixth temperature zone is preferably 320-370 ℃, and more preferably 340-350 ℃; the seventh temperature zone is preferably 325-375 ℃, and more preferably 345-355 ℃; the eighth temperature zone is preferably 330-390 ℃, and more preferably 350-360 ℃; the preferred machine head is 330-390 ℃, and the more preferred machine head is 350-360 ℃; the rotation speed of the melt extrusion is preferably 10-30 rpm, and more preferably 20 rpm. The invention limits the technological parameters of melt extrusion in the above range, and can make each component fully melt.
In the invention, the melt extrusion is preferably carried out from spinneret orifices, the number of the spinneret orifices is preferably 60-80, more preferably 70, and the diameter of the spinneret orifices is preferably 0.3-0.6 mm, more preferably 0.5 mm.
In the invention, the cooling is preferably carried out in cooling water, and the temperature of the cooling water is preferably 10-26 ℃, and more preferably 15-20 ℃.
The operation of the pre-drawing in the present invention is not particularly limited, and the pre-drawing method known to those skilled in the art may be used.
In the present invention, the draft preferably includes a first draft, a second draft, and a third draft in this order; the first drafting temperature is preferably 93-99 ℃, and more preferably 95-96 ℃; the second drafting temperature is preferably 125-138 ℃, and more preferably 130-135 ℃; the temperature of the third drawing is preferably 125-138 ℃, and more preferably 130-135 ℃. In the present invention, the total draft is preferably 15 to 20 times, and more preferably 16 to 18 times. The invention has no special limit on the drafting speed, and the total drafting multiple is ensured to be in the range. In the present invention, the drawing determines the structure and properties of the yarn, and affects the mechanical strength and tenacity of the yarn. The invention limits the drafting times, temperature and drafting multiple in the above range, and can make the composite yarn have higher mechanical property.
In the invention, the setting temperature is preferably 115-128 ℃, and more preferably 120-125 ℃; the setting time is preferably 10-60 s, and more preferably 20-30 s. The invention limits the setting temperature and time within the range, can set the silk and is beneficial to the subsequent processing.
In the invention, the cross-linking temperature is preferably 90-95 ℃, more preferably 92-93 ℃, and the cross-linking time is preferably 48-58 hours, more preferably 50-55 hours; the crosslinking is preferably carried out in hot water. In the invention, in the crosslinking process, methoxysilane groups in the vinyltrimethoxysilane are subjected to hydrolysis condensation reaction to form a crosslinking structure, so that the crosslinking density of the composite filament is improved, and the creep resistance of the composite filament is improved.
After the crosslinking is finished, the invention preferably dries the crosslinked product to obtain the silane crosslinked ultrahigh molecular weight polyethylene nano composite filament.
The drying operation is not particularly limited in the present invention, and the drying method known to those skilled in the art may be used.
After the silane cross-linked ultrahigh molecular weight polyethylene nano composite yarn is obtained, the silane cross-linked ultrahigh molecular weight polyethylene nano composite yarn is twisted for the first time and then stranded to obtain the rope core.
The number of the composite filaments during the primary twisting is not specially limited, and the composite filaments can be actually determined according to the specification of the three-ply yarn.
In the invention, the internal twist of the primary twist is preferably 6-15T/m, and more preferably 8-12T/m. In the present invention, the twist direction of the primary twist is preferably an S twist direction.
In the invention, the external twist of the rope core is preferably 40-128T/m, and more preferably 60-80T/m; the twisting direction of the rope core is preferably Z twisting direction.
The invention limits the external twist and the twist direction of the rope core within the range, and can further improve the mechanical property and the creep resistance of the rope core.
The polytetrafluoroethylene fibers are twisted to respectively obtain the polytetrafluoroethylene rope yarns in the S-twisting direction and the polytetrafluoroethylene rope yarns in the Z-twisting direction.
In the present invention, the fineness of the polytetrafluoroethylene fibers is preferably 300 to 800D, and more preferably 500 to 600D. The invention limits the fineness of the polytetrafluoroethylene fiber within the range, can enable the fiber to have higher density, and further improves the wear resistance of the fiber.
The operation of the plying and twisting in the present invention is not particularly limited, and the plying and twisting technical scheme known to those skilled in the art can be adopted.
After obtaining the rope core, the S-twisted polytetrafluoroethylene rope yarns and the Z-twisted polytetrafluoroethylene rope yarns, the invention weaves the S-twisted polytetrafluoroethylene rope yarns and the Z-twisted polytetrafluoroethylene rope yarns into the skin layer on the surface of the rope core to obtain the low-creep low-wear net steel wire.
The operation of the weaving is not particularly limited in the present invention, and the weaving technical scheme known to those skilled in the art can be adopted.
The invention controls the technological parameters of temperature, time and the like in the preparation process, so that all the components are fully mixed, the mechanical property of the composite wire is improved, the mechanical property and the creep resistance of the net steel wire are improved after the net steel wire is prepared, and the wear resistance of the net steel wire is improved by adopting polytetrafluoroethylene as a skin layer.
The invention also provides the application of the low-creep low-wear net wire line or the low-creep low-wear net wire prepared by the preparation method in the technical scheme in fishing gear.
The operation of the low-creep low-wear net wire in the fishing gear is not particularly limited, and the technical scheme of applying the low-creep low-wear net wire in the fishing gear, which is well known to those skilled in the art, can be adopted.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The low-creep low-wear net wire of the embodiment consists of a rope core and a skin layer wrapped outside the rope core;
the rope core is processed by silane cross-linked ultra-high molecular weight polyethylene nano composite wires, and the silane cross-linked ultra-high molecular weight polyethylene nano composite wires are prepared from the following raw materials in parts by weight: 100 parts of ultra-high molecular weight polyethylene (the melt index is 0.2-0.25 g/10min, the molecular weight is 240 ten thousand), 0.12 part of dicumyl peroxide, 0.1 part of styrene, 0.22 part of vinyl trimethoxy silane and 1 part of montmorillonite (the surface area is 260 m) 2 8 parts of diethylene glycol dibenzoate, 0.2 part of tris (2, 4-di-tert-butyl phenyl) phosphite (volatile component is less than or equal to 0.5 percent, and ash content is less than or equal to 0.1 percent) and 0.25 part of turpentine;
the skin layer is made of polytetrafluoroethylene;
the preparation method comprises the following steps: premixing ultrahigh molecular weight polyethylene UHMWPE powder, dicumyl peroxide (DCP), styrene, vinyl trimethoxy silane (VTMS), montmorillonite, diethylene glycol dibenzoate, tris (2, 4-di-tert-butyl) phosphite and turpentine oil which are weighed according to a formula, pouring the premixed mixture into a high-speed kneading pot, and kneading the mixture at a high speed of 500r/min for 15min to obtain an UHMWPE composite material; the temperature control ranges of the UHMWPE composite material in an electric heating zone of a charging barrel of a spinning machine containing double screws are respectively 1 zone 170 ℃, 2 zones: 329 ℃, 3 zone 330 ℃,4 zone: 350 ℃, zone 5: 350 ℃, zone 6: 355 ℃, 7, 360 ℃, 8, 360 ℃, 357 ℃ of a machine head, the melt extrusion is carried out at the rotating speed of 30 r/min, the extrudate is measured by an additionally arranged metering pump and then is melt extruded from a spinneret orifice, the aperture of the spinneret orifice on the spinneret plate is 0.5mm, the number of the orifices is 70, the extruded nascent filament is cooled and pre-drawn by low-temperature water at 25 ℃ and a first drawing roller of a cooling water tank, the pre-drawn filament is subjected to three times of hot drawing by a first drawing water bath at 99 ℃, a second drawing roller, a second drawing hot air tank at 134 ℃, and a third drawing hot air tank at 130 ℃, the size of the first drawing water bath is 4.0m long, 0.9m wide, 0.9m high, the size of the second drawing hot air tank is 5.0m long, 0.9m wide, 0.9m high, and the size of the third drawing hot air tank is 5.0m long, 0.9m wide, 0.9m high; controlling the total drafting multiple to be 15 times, carrying out heat setting (the heat setting processing temperature is 118 ℃ and the setting time is 30s) in a constant temperature box with the specification of 0.32m, the height is multiplied by 0.32m, the width is multiplied by 2.0m, then winding UHMWPE tows by a filament winder using a torque motor, soaking the UHMWPE tows in hot water with the temperature of 95 ℃ for 48h, carrying out silane crosslinking, and then drying to obtain silane crosslinked UHMWPE nano composite filaments with the linear density of 32 tex; the number of the silane crosslinked UHMWPE nano composite filament is 170, and the silane crosslinked UHMWPE nano composite filament is firstly twisted by an internal twist of 15T/m by a stranding machine to obtain a silane crosslinked UHMWPE nano composite strand in an S twist direction; processing 3 silane-crosslinked UHMWPE nano composite strands with S twist direction into a silane-crosslinked UHMWPE nano composite strand core layer with Z twist direction and 120T/m external twist degree by a three-strand twisting machine, combining 3 polytetrafluoroethylene fibers into 1 strand by a stranding machine, and twisting in S twist direction and Z twist direction by the twisting machine respectively to obtain S-twist-direction polytetrafluoroethylene rope yarns and Z-twist-direction polytetrafluoroethylene rope yarns for skin weaving; then taking a silane crosslinked UHMWPE nano composite yarn core layer as a rope core, taking S-twisted polytetrafluoroethylene rope yarns and Z-twisted polytetrafluoroethylene rope yarns as rope yarns for weaving a skin layer, and weaving the rope yarns with low creep and low abrasion by using an 8-strand cored weaving rope machine; when the low-creep low-wear mesh steel layer is woven, one half of rope yarns are polytetrafluoroethylene rope yarns with S twist direction, the other half of rope yarns are polytetrafluoroethylene rope yarns with Z twist direction, and the low-creep low-wear mesh steel wire with the diameter of 8mm is obtained.
Comparative example 1
Commercial ultra high molecular weight polyethylene mesh wire (8 mm diameter).
Comparative example 2
The procedure of immersing UHMWPE filaments in 95 ℃ hot water for 48 hours for silane crosslinking in example 1 was omitted, and the other parameters were the same as in example 1.
The creep resistance of the wire rods of example 1 and comparative example 2 was tested, and the steady creep strain rate of the low-creep low-wear wire rod of example 1 was 35.1%, the steady creep strain rate of the wire rod of comparative example 2 was 49.9%, and the creep strain rate of example 1 was 29.7% lower than that of comparative example 2 under the same load and the same time (the preload force was set to 50% of the breaking strength of the wire rod, and the running time was 60 min).
The wear resistance of the mesh wires of example 1 and comparative example 1 was tested and the strength retention of the mesh wires of example 1 after 1000 wear was 90.2%, much higher than the commercially available UHMWPE mesh material of comparative example 1 (80.4%).
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A low-creep low-wear net wire comprises a rope core and a skin layer wrapped outside the rope core;
the rope core is processed by silane cross-linked ultra-high molecular weight polyethylene nano composite wires, and the silane cross-linked ultra-high molecular weight polyethylene nano composite wires are prepared from the following raw materials in parts by weight: 100 parts of ultrahigh molecular weight polyethylene, 0.1-0.13 part of initiator, 0.1-0.15 part of styrene, 0.2-0.26 part of vinyl trimethoxy silane, 0.2-2.2 parts of nano layered silicate, 5.3-15.5 parts of plasticizer, 0.15-0.28 part of tris (2, 4-di-tert-butyl phenyl) phosphite and 0.15-0.28 part of turpentine;
the cortex is made of polytetrafluoroethylene.
2. The low creep, low wear wire according to claim 1 wherein the initiator comprises dicumyl peroxide, dibenzoyl peroxide or bis (trimethylsilyl) peroxide.
3. The low creep low wear wire rope according to claim 1 wherein the nano layered silicate comprises montmorillonite or mica.
4. A method for preparing a low creep low wear wire according to any one of claims 1 to 3, comprising the steps of:
(1) mixing raw materials of the silane cross-linked ultrahigh molecular weight polyethylene nano composite filament, and then sequentially carrying out melt extrusion, cooling, pre-drafting, sizing and cross-linking to obtain the silane cross-linked ultrahigh molecular weight polyethylene nano composite filament;
(2) stranding the nano composite wires obtained in the step (1) after primary twisting to obtain rope cores;
(3) twisting the stranded polytetrafluoroethylene fibers to respectively obtain polytetrafluoroethylene rope yarns in an S twisting direction and polytetrafluoroethylene rope yarns in a Z twisting direction;
(4) and (3) weaving the S-twisted polytetrafluoroethylene rope yarns and the Z-twisted polytetrafluoroethylene rope yarns obtained in the step (3) into a skin layer on the surface of the rope core obtained in the step (2) to obtain the low-creep low-wear net steel wire.
5. The preparation method according to claim 4, wherein the temperature for shaping in the step (1) is 115-128 ℃.
6. The method according to claim 4, wherein the total draft in the step (1) is 15 to 20 times.
7. The preparation method according to claim 4, wherein the temperature of the crosslinking in the step (1) is 90-95 ℃ and the time of the crosslinking is 48-58 h.
8. The production method according to claim 4, wherein the internal twist of the primary twist in the step (2) is 6 to 15T/m.
9. The preparation method according to claim 4, wherein the core rope in the step (2) has a Z-twist direction, and the external twist of the core rope is 40-128T/m.
10. Use of the low-creep low-wear net wire according to any one of claims 1 to 3 or the low-creep low-wear net wire prepared by the preparation method according to any one of claims 4 to 9 in fishing gear.
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