CN117467207A - High-performance modified polyethylene rubber cloth liner and preparation method thereof - Google Patents
High-performance modified polyethylene rubber cloth liner and preparation method thereof Download PDFInfo
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- CN117467207A CN117467207A CN202311424289.5A CN202311424289A CN117467207A CN 117467207 A CN117467207 A CN 117467207A CN 202311424289 A CN202311424289 A CN 202311424289A CN 117467207 A CN117467207 A CN 117467207A
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- -1 polyethylene Polymers 0.000 title claims abstract description 98
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 97
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 97
- 239000004744 fabric Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 61
- 239000002667 nucleating agent Substances 0.000 claims abstract description 54
- 239000002245 particle Substances 0.000 claims abstract description 45
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 31
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 31
- 239000007822 coupling agent Substances 0.000 claims abstract description 30
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 28
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 28
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 24
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 24
- 239000000945 filler Substances 0.000 claims abstract description 24
- 239000003607 modifier Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 16
- 229920000642 polymer Polymers 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 9
- 238000009987 spinning Methods 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000012628 flowing agent Substances 0.000 claims description 3
- 239000004811 fluoropolymer Substances 0.000 claims description 3
- 229920002313 fluoropolymer Polymers 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000009474 hot melt extrusion Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 239000011258 core-shell material Substances 0.000 description 15
- 229910052731 fluorine Inorganic materials 0.000 description 14
- 239000011737 fluorine Substances 0.000 description 14
- PRWJPWSKLXYEPD-UHFFFAOYSA-N 4-[4,4-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butan-2-yl]-2-tert-butyl-5-methylphenol Chemical compound C=1C(C(C)(C)C)=C(O)C=C(C)C=1C(C)CC(C=1C(=CC(O)=C(C=1)C(C)(C)C)C)C1=CC(C(C)(C)C)=C(O)C=C1C PRWJPWSKLXYEPD-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 229920001577 copolymer Polymers 0.000 description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 7
- 125000001153 fluoro group Chemical group F* 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000000600 sorbitol Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- LDLDYFCCDKENPD-UHFFFAOYSA-N ethenylcyclohexane Chemical compound C=CC1CCCCC1 LDLDYFCCDKENPD-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical class C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 229920006270 hydrocarbon resin Polymers 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/12—Applications used for fibers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The invention relates to a high-performance modified polyethylene rubber cloth and a preparation method thereof, and a modified polyethylene material is characterized by comprising the following raw materials in parts by weight: 40-60 parts of LDPE (Low Density polyethylene), 40-60 parts of HDPE (high density polyethylene), 5-20 parts of modified filler, 5-20 parts of nucleating agent, 0.05-1 part of coupling agent, 0.5-5 parts of flow modifier, 0.02-1 part of antioxidant and 10-20 parts of reinforcing particle. The strength and toughness of the obtained modified polyethylene material are obviously superior to those of the existing material. The rubber cloth pad prepared from the modified polyethylene material is better in toughness, higher in stiffness, more wear-resistant and longer in service life after being woven into the rubber cloth pad by the fibers prepared from the modified polyethylene material because the strength and toughness of the modified polyethylene material are obviously superior to those of the prior art.
Description
Technical Field
The invention relates to the technical field of rubber cloth, in particular to high-performance modified polyethylene rubber cloth and a preparation method thereof.
Background
In the process from rubber to tire production, raw materials are firstly mixed together according to a formula to carry out banburying, and after the banburying is finished, the mixed rubber is required to be conveyed to different places for preparing materials for other processes, such as: bead (Bead) assembly lines, seal layer (inner liner) calender lines, steel belt (steelbelt) calender lines, ply calender lines, sidewall extrusion lines, tread extrusion lines, etc. That is, the different rubber formulations are subjected to the banburying process and then the manufacture of different parts of the tire is completed at other stations with other raw materials (cords, steel wires, etc.). Rubber cloth is needed in the rubber transferring and storing process, and rubber is transferred or separated into rolls to be placed by using the rubber cloth, so that the rubber cloth has high requirements on toughness, stiffness, service life and the like. Common rubber blanket materials in the prior art include polypropylene (PP), polyethylene terephthalate (PET), polyethylene (PE), and the like.
PE resin has the advantages of high crystallinity, high density, good mechanical strength, high use temperature and good low temperature resistance, but the polyethylene product has the defects of low hardness, poor toughness and the like.
Therefore, the rubber blanket made of polyethylene cannot meet the use requirements of rubber products with different properties without formulation, and the prior art needs to be improved.
Disclosure of Invention
The invention aims to solve the problems and provides a modified polyethylene material and a preparation method thereof, and a high-performance modified polyethylene rubber cloth liner and a preparation method thereof.
In a first aspect, the invention provides a modified polyethylene material, which comprises the following raw materials in parts by weight: 40-60 parts of LDPE (Low Density polyethylene), 40-60 parts of HDPE (high density polyethylene), 5-20 parts of modified filler, 5-20 parts of nucleating agent, 0.05-1 part of coupling agent, 0.5-5 parts of flow modifier, 0.02-1 part of antioxidant and 10-20 parts of reinforcing particle.
Preferably, the modified polyethylene material is composed of the following raw materials in parts by weight: 40-60 parts of LDPE (Low Density polyethylene), 40-60 parts of HDPE (high density polyethylene), 8-16 parts of modified filler, 5-12 parts of nucleating agent, 0.1-0.5 part of coupling agent, 1-3 parts of flow modifier, 0.05 part of antioxidant and 10-15 parts of reinforcing particle.
Optionally, the modified filler is any one of glass fiber, kaolin, calcium carbonate, titanium dioxide, glass beads, carbon nanotubes and whiskers. The glass fiber comprises two specifications of 3mm and 6 mm.
Optionally, the nucleating agent is any one of an inorganic nucleating agent, an organic nucleating agent, a high molecular nucleating agent and a compound nucleating agent. Wherein the inorganic nucleating agent is any one of silicon dioxide, talcum powder, titanium dioxide and calcium carbonate; the organic is any one of nucleating agent carboxylic acid and salts thereof, sorbitol and organic phosphate; the polymer nucleating agent is any one of vinyl cyclohexane and vinyl cyclopentane. The nucleating agent can promote the uniform and refined crystallization of polyethylene and ensure the mechanical property;
the modified polyethylene material according to claim 1, wherein the coupling agent is any one of a silane coupling agent, a titanate coupling agent, and polyethylene grafted maleic anhydride. The silane coupling agent is KH-550 or KH-570; the titanate coupling agent is composite monoalkoxy titanate, isopropyl tri (dodecylbenzenesulfonyl) titanate and the like;
a modified polyethylene material according to claim 1, wherein said flow modifier is one or a mixture of more than one of silicone, hydrogenated petroleum resin, and fluoropolymer.
The hydrogenated petroleum resin may be hydrogenated cyclopentadiene petroleum hydrocarbon resin or the like. The fluoropolymer may be a vinylidene fluoride-hexafluoropropylene copolymer or the like. The polymer obtained by copolymerizing hexafluoropropylene and vinylidene fluoride according to a certain proportion can enhance the heat resistance, corrosion resistance, solvent resistance and the like of polyethylene products.
Optionally, the antioxidant is any one of antioxidant CA or antioxidant 1010. The high-efficiency antioxidant can ensure that the invention is not degraded in the processing process.
Optionally, the reinforcing particles are core-shell structure particles, and the core-shell structure particles are any one of copolymerization type core-shell structure particles, polymer core-shell structure particles formed in situ by blending, nanoparticle coated rubber type core-shell structure and emulsion polymerization type core-shell particles. The core-shell structure particles have a harder core shell, so that the rigidity strength can be increased while the toughness is improved.
In a second aspect, the invention provides a preparation method of a modified polyethylene material, which comprises the following steps:
s1: firstly, mixing the modified filler, the nucleating agent and the coupling agent in a high-speed mixer at a high speed under the temperature of 50-80 ℃;
s2: then LDPE, HDPE, modified flowing agent, antioxidant and reinforcing particles are added into a high-speed mixer to be mixed at a high speed, the mixing temperature is 25-50 ℃,
s3: extruding and granulating the mixture obtained in the step S2 through a double-screw extruder to obtain modified polyethylene material particles, wherein the extrusion temperature is 150-240 ℃.
In a third aspect, the invention also provides a rubber blanket prepared from the modified polyethylene material obtained in the first and second aspects.
In a fourth aspect, the present invention also provides a method for preparing the rubber cushion cloth according to the third aspect, which comprises the following steps:
a: adopts modified polyethylene material particles as a base material,
b: carrying out hot melt extrusion spinning on modified polyethylene material particles to obtain modified polyethylene long fibers, spinning the modified polyethylene long fibers into yarns, spinning the modified polyethylene yarns into modified polyethylene filaments, and continuously twisting the polyethylene filaments by a twisting machine to obtain modified polyethylene filaments;
c: the modified polyethylene yarn is sent into a stretcher for stretching treatment, so that the molecular arrangement of the fiber yarn is more orderly, the strength and toughness of the fiber yarn are enhanced, the stretching opportunity gradually reduces the diameter of the fiber yarn through a series of rolling and traction, and the length of the fiber yarn is stretched;
d: doubling, doubling and twisting the modified polyethylene yarn obtained in the step C, warping and penetrating into a secondary place;
e: then sending the fabric into a loom for weaving;
f: shaping and cutting the fabric obtained in the step E to obtain high-performance modified polyethylene rubber backing cloth; the shaping adopts a heating, stretching and shaping process;
g: and (5) performing quality inspection on the obtained high-performance modified polyethylene rubber cloth.
Compared with the prior art, the invention has the following advantages:
the invention provides a modified polyethylene material and a preparation method thereof, and the strength and toughness of the obtained modified polyethylene material are obviously superior to those of the existing material; the high-performance modified polyethylene material rubber cloth pad prepared from the modified polyethylene material is obviously superior to the prior art in strength and toughness, and after the fiber is made into the rubber cloth pad by the polyethylene material, the obtained rubber cloth pad is better in toughness, higher in stiffness, more wear-resistant and longer in service life.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to examples and experimental data, and it is apparent that the described examples are only some of the examples of the present invention, but not all of the examples. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention. In the present invention, the equipment, materials, etc. used are commercially available or commonly used in the art, unless otherwise specified. The methods in the following examples are conventional in the art unless otherwise specified. It is to be understood that various raw materials in the present invention are commercially available unless otherwise specified.
Example 1:
a modified polyethylene material consists of the following raw materials in parts by mass: 50 parts of LDPE (low-density polyethylene), 50 parts of HDPE (high-density polyethylene), 10 parts of modified filler, 5 parts of nucleating agent, 0.1 part of coupling agent, 1.5 parts of flow modifier, 0.05 part of antioxidant and 15 parts of reinforcing particle.
In the embodiment, the modified filler is glass fiber with the specification of 3 mm; the nucleating agent is a high molecular nucleating agent, and the high molecular nucleating agent is vinyl cyclohexane; the coupling agent is a silane coupling agent; the flow modifier is a fluorine-containing polymer, and the fluorine-containing polymer is vinylidene fluoride-hexafluoropropylene copolymer; the antioxidant is antioxidant CA; the reinforced particles are core-shell structure particles.
The preparation method comprises the following steps: preparing materials according to the raw material composition ratio of the embodiment;
s1: firstly, mixing the modified filler, the nucleating agent and the coupling agent in a high-speed mixer at a high speed under the temperature of 50-80 ℃;
s2: then LDPE, HDPE, modified flowing agent, antioxidant and reinforcing particles are added into a high-speed mixer to be mixed at a high speed, the mixing temperature is 25-50 ℃,
s3: extruding and granulating the mixture obtained in the step S2 through a double-screw extruder to obtain modified polyethylene material particles, wherein the extrusion temperature is 150-240 ℃.
Example 2:
a modified polyethylene material consists of the following raw materials in parts by mass: 50 parts of LDPE (low-density polyethylene), 50 parts of HDPE (high-density polyethylene), 10 parts of modified filler, 10 parts of nucleating agent, 0.1 part of coupling agent, 1.5 parts of flow modifier, 0.05 part of antioxidant and 15 parts of reinforcing particle.
In the embodiment, the modified filler is glass fiber with the specification of 6 mm; the nucleating agent is an inorganic nucleating agent, and the inorganic nucleating agent is silicon dioxide; the coupling agent is a silane coupling agent; the flow modifier is a fluorine-containing polymer, and the fluorine-containing polymer is vinylidene fluoride-hexafluoropropylene copolymer; the antioxidant is antioxidant CA; the reinforced particles are core-shell structure particles.
The preparation method is the same as in example 1.
Example 3:
a modified polyethylene material consists of the following raw materials in parts by mass: 40 parts of LDPE (low-density polyethylene), 60 parts of HDPE (high-density polyethylene), 15 parts of modified filler, 8 parts of nucleating agent, 0.35 part of coupling agent, 2 parts of flow modifier, 0.05 part of antioxidant and 10 parts of reinforcing particle.
In this embodiment, the modified filler is kaolin clay; the nucleating agent is an organic nucleating agent, and the organic nucleating agent is sorbitol; the coupling agent is polyethylene grafted maleic anhydride; the flow modifier is a fluorine-containing polymer, and the fluorine-containing polymer is vinylidene fluoride-hexafluoropropylene copolymer; the antioxidant is antioxidant CA; the reinforced particles are core-shell structure particles.
The preparation method is the same as in example 1.
Example 4:
a modified polyethylene material consists of the following raw materials in parts by mass: 60 parts of LDPE (low-density polyethylene), 40 parts of HDPE (high-density polyethylene), 16 parts of modified filler, 8 parts of nucleating agent, 0.38 part of coupling agent, 2 parts of flow modifier, 0.05 part of antioxidant and 10 parts of reinforcing particle.
In this embodiment, the modified filler is calcium carbonate; the nucleating agent is an organic nucleating agent, and the organic nucleating agent is sorbitol; the coupling agent is polyethylene grafted maleic anhydride; the flow modifier is a fluorine-containing polymer, and the fluorine-containing polymer is vinylidene fluoride-hexafluoropropylene copolymer; the antioxidant is antioxidant CA; the reinforced particles are core-shell structure particles.
The preparation method is the same as in example 1.
Example 5:
a modified polyethylene material consists of the following raw materials in parts by mass: 50 parts of LDPE (low-density polyethylene), 50 parts of HDPE (high-density polyethylene), 10 parts of modified filler, 10 parts of nucleating agent, 0.3 part of coupling agent, 1 part of flow modifier, 0.05 part of antioxidant and 15 parts of reinforcing particle.
In this embodiment, the modified filler is glass beads; the nucleating agent is an inorganic nucleating agent, and the inorganic nucleating agent is silicon dioxide; the coupling agent is titanate coupling agent; the flow modifier is a fluorine-containing polymer, and the fluorine-containing polymer is vinylidene fluoride-hexafluoropropylene copolymer; the antioxidant is antioxidant CA; the reinforced particles are core-shell structure particles.
The preparation method is the same as in example 1.
Example 6:
a modified polyethylene material consists of the following raw materials in parts by mass: 50 parts of LDPE (low-density polyethylene), 50 parts of HDPE (high-density polyethylene), 8 parts of modified filler, 10 parts of nucleating agent, 0.15 part of coupling agent, 3 parts of flow modifier, 0.05 part of antioxidant and 10 parts of reinforcing particle.
In this embodiment, the modified filler is a carbon nanotube; the nucleating agent is a compound nucleating agent, and the compound nucleating agent is prepared by mixing an inorganic nucleating agent and an organic nucleating agent in a mass ratio of 1:1; the coupling agent is titanate coupling agent; the flow modifier is a fluorine-containing polymer, and the fluorine-containing polymer is vinylidene fluoride-hexafluoropropylene copolymer; the antioxidant is antioxidant CA; the reinforced particles are core-shell structure particles.
The preparation method is the same as in example 1.
Example 7:
a modified polyethylene material consists of the following raw materials in parts by mass: 40 parts of LDPE (low-density polyethylene), 60 parts of HDPE (high-density polyethylene), 12 parts of modified filler, 12 parts of nucleating agent, 0.15 part of coupling agent, 2 parts of flow modifier, 0.05 part of antioxidant and 15 parts of reinforcing particle.
In the embodiment, the modified filler is glass fiber with the specification of 3 mm; the nucleating agent is a compound nucleating agent, and the compound nucleating agent is prepared by mixing an inorganic nucleating agent and an organic nucleating agent in a mass ratio of 1:1; the coupling agent is titanate coupling agent; the flow modifier is a fluorine-containing polymer, and the fluorine-containing polymer is vinylidene fluoride-hexafluoropropylene copolymer; the antioxidant is antioxidant CA; the reinforced particles are core-shell structure particles.
The preparation method is the same as in example 1.
Comparative example 1:
a modified polyethylene material consists of the following raw materials in parts by mass: 50 parts of LDPE and 50 parts of HDPE, and blending and modifying.
Comparative example 2:
conventional HDPE materials are commercially available.
The measurement experiment results are specifically shown in table 1:
TABLE 1 test results for modified polyethylenes of examples 1-7, comparative examples 1-2
From the comparison of the above experimental results in table 1, it can be seen that: comparative example 1 compared to comparative example 2, the blend of comparative example 1LDPE and HDPE used has better performance than the HDPE of comparative example 2 alone; the test performance of examples 1-7 was greatly improved compared with comparative example 1, and in particular, the tensile strength, elongation at break and impact strength of example 7 were significantly improved; in addition, the 7 embodiment schemes provided by the invention improve the strength of the modified polyethylene material and the toughness of the modified polyethylene material, and overcome the defects of the existing materials.
Based on the high-performance modified polyethylene materials obtained in the above examples 1 to 7, a high-performance modified polyethylene material rubber blanket was prepared from the raw materials, and the preparation method thereof was as follows: a: adopts modified polyethylene material particles as a base material,
b: carrying out hot melt extrusion spinning on modified polyethylene material particles to obtain modified polyethylene long fibers, spinning the modified polyethylene long fibers into yarns, spinning the modified polyethylene yarns into modified polyethylene filaments, and continuously twisting the polyethylene filaments by a twisting machine to obtain modified polyethylene filaments;
c: the modified polyethylene yarn is sent into a stretcher for stretching treatment, so that the molecular arrangement of the fiber yarn is more orderly, the strength and toughness of the fiber yarn are enhanced, the stretching opportunity gradually reduces the diameter of the fiber yarn through a series of rolling and traction, and the length of the fiber yarn is stretched;
d: doubling, doubling and twisting the modified polyethylene yarn obtained in the step C, warping and penetrating into a secondary place;
e: then sending the fabric into a loom for weaving;
f: shaping and cutting the fabric obtained in the step E to obtain high-performance modified polyethylene rubber backing cloth; the shaping adopts a heating, stretching and shaping process;
g: and (5) performing quality inspection on the obtained high-performance modified polyethylene rubber cloth.
The rubber cloth pad prepared from the modified polyethylene material is better in toughness, higher in stiffness, more wear-resistant and longer in service life after being woven into the rubber cloth pad by the fibers prepared from the modified polyethylene material because the strength and toughness of the modified polyethylene material are obviously superior to those of the prior art.
It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present teachings and concepts, and all such modifications and substitutions are intended to be included within the scope of the present invention as defined in the accompanying claims.
Claims (10)
1. The modified polyethylene material is characterized by comprising the following raw materials in parts by weight: 40-60 parts of LDPE (Low Density polyethylene), 40-60 parts of HDPE (high density polyethylene), 5-20 parts of modified filler, 5-20 parts of nucleating agent, 0.05-1 part of coupling agent, 0.5-5 parts of flow modifier, 0.02-1 part of antioxidant and 10-20 parts of reinforcing particle.
2. The modified polyethylene material according to claim 1, wherein the modified polyethylene material is composed of the following raw materials in parts by weight: 40-60 parts of LDPE (Low Density polyethylene), 40-60 parts of HDPE (high density polyethylene), 8-16 parts of modified filler, 5-12 parts of nucleating agent, 0.1-0.5 part of coupling agent, 1-3 parts of flow modifier, 0.05 part of antioxidant and 10-15 parts of reinforcing particle.
3. The modified polyethylene material according to claim 1, wherein the modified filler is any one of glass fiber, kaolin, calcium carbonate, titanium dioxide, glass beads, carbon nanotubes, whiskers.
4. The modified polyethylene material according to claim 1, wherein the nucleating agent is any one of an inorganic nucleating agent, an organic nucleating agent, a polymer nucleating agent, and a compound nucleating agent.
5. The modified polyethylene material according to claim 1, wherein the coupling agent is any one of a silane coupling agent, a titanate coupling agent, and polyethylene grafted maleic anhydride.
6. A modified polyethylene material according to claim 1, wherein said flow modifier is one or a mixture of more than one of silicone, hydrogenated petroleum resin, and fluoropolymer.
7. A process for preparing the modified polyethylene material of claim 1, comprising the steps of:
s1: firstly, mixing the modified filler, the nucleating agent and the coupling agent in a high-speed mixer at a high speed under the temperature of 50-80 ℃;
s2: then LDPE, HDPE, modified flowing agent, antioxidant and reinforcing particles are added into a high-speed mixer to be mixed at a high speed, the mixing temperature is 25-50 ℃,
s3: extruding and granulating the mixture obtained in the step S2 through a double-screw extruder to obtain modified polyethylene material particles, wherein the extrusion temperature is 150-240 ℃.
8. A rubber blanket, characterized in that the rubber blanket is prepared from the modified polyethylene material prepared according to any one of claims 1 to 6.
9. The rubber blanket according to claim 8, wherein the rubber blanket is prepared by the following method:
s1: adopts modified polyethylene material particles as a base material,
s2: carrying out hot melt extrusion spinning on modified polyethylene material particles to obtain modified polyethylene long fibers, spinning the modified polyethylene long fibers into yarns, spinning the modified polyethylene yarns into modified polyethylene filaments, and continuously twisting the polyethylene filaments by a twisting machine to obtain modified polyethylene filaments;
s3: feeding the modified polyethylene filaments into a stretcher for stretching treatment;
s4: doubling, doubling and twisting, warping and penetrating the modified polyethylene yarn obtained in the step S3;
s5: then sending the fabric into a loom for weaving;
s6: shaping and cutting the fabric obtained in the step S5 to obtain high-performance modified polyethylene rubber backing cloth;
s7: and (5) performing quality inspection on the obtained high-performance modified polyethylene rubber cloth.
10. The rubber blanket according to claim 9, wherein the shaping process of step F employs a heat stretch shaping process.
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