CN117534905A - High-stiffness rubber cloth liner and preparation method thereof - Google Patents
High-stiffness rubber cloth liner and preparation method thereof Download PDFInfo
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- CN117534905A CN117534905A CN202311535620.0A CN202311535620A CN117534905A CN 117534905 A CN117534905 A CN 117534905A CN 202311535620 A CN202311535620 A CN 202311535620A CN 117534905 A CN117534905 A CN 117534905A
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- 239000004744 fabric Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000004743 Polypropylene Substances 0.000 claims abstract description 112
- -1 polypropylene Polymers 0.000 claims abstract description 108
- 229920001155 polypropylene Polymers 0.000 claims abstract description 107
- 239000000463 material Substances 0.000 claims abstract description 63
- 239000002667 nucleating agent Substances 0.000 claims abstract description 48
- 239000000314 lubricant Substances 0.000 claims abstract description 33
- 239000007822 coupling agent Substances 0.000 claims abstract description 31
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims abstract description 24
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims abstract description 24
- 239000003607 modifier Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 16
- 238000011049 filling Methods 0.000 claims abstract description 11
- 239000004698 Polyethylene Substances 0.000 claims description 28
- 229920000573 polyethylene Polymers 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000009474 hot melt extrusion Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000009987 spinning Methods 0.000 claims description 5
- 238000009941 weaving Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical group O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 11
- 239000003921 oil Substances 0.000 description 9
- 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 description 7
- 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 7
- 229910000323 aluminium silicate Inorganic materials 0.000 description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical group CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 description 3
- LDLDYFCCDKENPD-UHFFFAOYSA-N ethenylcyclohexane Chemical compound C=CC1CCCCC1 LDLDYFCCDKENPD-UHFFFAOYSA-N 0.000 description 3
- 229910052621 halloysite Inorganic materials 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002071 nanotube Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 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 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000001514 detection method Methods 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
- 230000000694 effects Effects 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a polypropylene modified material and a preparation method thereof, and a high-stiffness rubber cloth liner and a preparation method thereof. The polypropylene modified material consists of the following raw materials in parts by weight: PP:60-90 parts; UHMWPE:10-40 parts of a lubricant; and (3) filling: 4-8 parts of a lubricant; and (3) a modifier: 2-10 parts; nucleating agent: 0.1-1 parts; coupling agent: 0.5-4 parts; antioxidant: 0.1-0.5 part; and (3) a lubricant: 0.5-1 part. A high-stiffness rubber cloth is prepared from the polypropylene modified material. The stiffness and the wear resistance of the rubber cushion cloth are superior to those of the PP cushion cloth in the prior art, the contact area between the cushion surface of the rubber cushion cloth and the rubber is smaller, the stiffness is higher, the rubber is easier to peel from the rubber cushion cloth, and the rubber cushion cloth is particularly suitable for special tire rubber with particularly strong viscosity.
Description
Technical Field
The invention relates to the field of rubber cloth mats, in particular to a high-stiffness rubber cloth mat 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 cushion 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 cushion cloth, so that high requirements are placed on heat resistance, toughness and stiffness of the rubber cushion cloth. The rubber cloth materials commonly used in the prior art include polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), and the like.
Polypropylene (PP) is a polymer polymerized from propylene, and has the advantages of low density, high strength, corrosion resistance, easy molding and the like, but PP has the defects of poor toughness, unsatisfactory wear resistance, poor thermo-mechanical performance and the like, so that the application range of PP is limited, the application effect in rubber cloth is not ideal enough, and the stiffness is not enough, and the wear resistance is not enough, so that the service life is general. Polyethylene (PE) resin has the advantages of high crystallinity, high density, good mechanical strength, high use temperature and good low temperature resistance, but polyethylene products have the defects of low hardness, poor toughness, poor bearing capacity, poor environmental stress cracking resistance and the like.
Therefore, rubber backings made of polypropylene or polyethylene cannot meet the use requirements of various rubber products of different formulations, and improvements are needed in the art.
Disclosure of Invention
The invention provides a polypropylene modified material and a preparation method thereof, and a high-stiffness rubber cloth and a preparation method thereof, aiming at solving the problems of poor toughness, unsatisfactory wear resistance and insufficient stiffness in the application of the rubber cloth.
In a first aspect, the invention provides a polypropylene modified material, which comprises the following raw materials in parts by weight: PP:60-90 parts; UHMWPE:10-40 parts of a lubricant; and (3) filling: 4-8 parts of a lubricant; and (3) a modifier: 2-10 parts; nucleating agent: 0.1-1 parts; coupling agent: 0.5-4 parts; antioxidant: 0.1-0.5 part; and (3) a lubricant: 0.5-1 part.
Preferably, the polypropylene modified material is composed of the following raw materials in parts by weight: PP:80-85 parts; UHMWPE:15-20 parts of a lubricant; and (3) filling: 6-8 parts of a lubricant; and (3) a modifier: 8-10 parts of a lubricant; nucleating agent: 0.5-1 part; coupling agent: 3-3.5 parts; antioxidant: 0.5 parts; and (3) a lubricant: 0.8 parts.
Optionally, the filler is kaolin, calcium carbonate, glass fiber, nano-CaCO 3 Any one of them; preferred fillers are Nano-CaCO 3 。
Preferably, the modifier is white oil.
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 aluminosilicate, 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 preferred nucleating agents are aluminosilicate-based Halloysite Nanotubes (HNTs) which, due to their tubular structure and high specific surface area, can enhance the mechanical properties of the polymer such as strength, stiffness, heat resistance, etc.
Optionally, the coupling agent is any one of silane coupling agent, titanate coupling agent and polyethylene grafted maleic anhydride. The preferred coupling agent is vinyltrimethoxysilane.
Preferably, the antioxidant is a mixture of antioxidant 1010 and antioxidant 168 in a mass ratio of 1:2.5. The high-efficiency antioxidant can ensure that the invention is not degraded in the processing process.
Preferably, the lubricant is polyethylene wax.
In a second aspect, the invention provides a preparation method of a polypropylene modified material, which comprises the following steps:
s1: mixing PP, UHMWPE, filler and modifier in the formula amount at high speed in a high-speed mixer at 50-80 ℃, and sieving to obtain a mixture 1;
s2: feeding the mixture 1 obtained in the step S1 into a melt extruder for mixing to obtain a mixture 2;
s3: adding the nucleating agent, the coupling agent, the antioxidant and the lubricant in the formula amount into the mixture 2 obtained in the step S2, and continuously mixing;
s4: and S3, uniformly mixing, cooling and obtaining the polypropylene modified material.
Further, the temperature of the melt extruder in the step S2 is 190-240 ℃; the screw speed of the melt extruder described in step S2 was 460-520rpm.
In a third aspect, the use of the polypropylene modified material described above in the preparation of a rubber backing, a rubber fiber or a rubber film.
In a fourth aspect, based on the same invention creation of the polypropylene modified material, the invention also provides a high-stiffness rubber blanket prepared by using the polypropylene modified material obtained in the first aspect and the second aspect.
In a fifth aspect, the present invention also provides a method for preparing the high stiffness rubber backing fabric according to the fourth aspect, the method comprising:
s1: adopts polypropylene modified material particles as a base material,
s2: carrying out hot melt extrusion spinning on the polypropylene modified material particles to obtain polypropylene modified filaments;
s3: the polypropylene modified yarn is sent into a stretcher for stretching treatment;
s4: doubling, doubling and twisting, warping and penetrating the polypropylene modified 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-stiffness polypropylene modified rubber backing cloth;
s7: and (5) performing quality inspection on the obtained polypropylene modified rubber cloth.
Further, the cross section of the polypropylene modified yarn obtained in the step S2 is round or hexagonal; the high-stiffness rubber cloth gasket obtained in the step S6 is 680D/60F in specification.
Compared with the prior art, the invention has the following advantages:
1. the invention provides a polypropylene modified material and a preparation method thereof, and the prepared polypropylene modified material has obviously better strength and toughness than the existing polypropylene material; the invention utilizes the characteristics of excellent impact resistance and wear resistance of UHMWPE, and the UHMWPE is blended with PP to improve the toughness of the PP, the strength is not obviously reduced, UHMWPE crystals are gathered and connected with each other among molecular chains to form a complex network continuous structure, so that the impact performance of the PP can be improved, and the problem of high entanglement of UHMWPE molecular chains is solved by using white oil, so that the polypropylene modified material with the strength and toughness remarkably superior to those of the existing polypropylene material is obtained;
2. the invention provides a rubber cloth liner made of the polypropylene material, and the stiffness and the wear resistance of the rubber cloth liner are superior to those of PP cloth liners in the prior art.
3. The preparation method of the rubber cushion cloth changes the cross section circle of the polypropylene yarn in the prior art into a hexagonal shape, increases the transverse friction force of the polypropylene yarn, ensures that the cushion surface of the prepared rubber cushion cloth has smaller contact area with rubber, has higher stiffness, is easier to peel rubber from the rubber cushion cloth, and is particularly suitable for special tire rubber with extremely strong viscosity.
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:
the polypropylene modified material consists of the following raw materials in parts by weight:
PP:85 parts; UHMWPE:15 parts; and (3) filling: 6 parts; and (3) a modifier: 10 parts; nucleating agent: 0.8 parts; coupling agent: 3.5 parts; antioxidant: 0.5 parts; and (3) a lubricant: 0.8 parts.
In this embodiment, the filler is Nano-CaCO 3 The method comprises the steps of carrying out a first treatment on the surface of the The modifier is white oil; the nucleating agent is an inorganic nucleating agent, the inorganic nucleating agent is aluminosilicate, and the aluminosilicate nucleating agent is Halloysite Nanotubes (HNTs); the coupling agent is a silane coupling agent, and the silane coupling agent is vinyl trimethoxy silane; the antioxidant 1010 and the antioxidant 168 are mixed according to the mass ratio of 1:2.5; the lubricant is polyethylene wax.
The preparation method comprises the following steps: preparing materials according to the raw material composition ratio of the embodiment;
s1: mixing PP, UHMWPE, filler and modifier in the formula amount at high speed in a high-speed mixer at 50-80 ℃, and sieving to obtain a mixture 1;
s2: feeding the mixture 1 obtained in the step S1 into a melt extruder for mixing to obtain a mixture 2;
s3: adding the nucleating agent, the coupling agent, the antioxidant and the lubricant in the formula amount into the mixture 2 obtained in the step S2, and continuously mixing;
s4: and S3, uniformly mixing, cooling and obtaining the polypropylene modified material.
The temperature of the melt extruder in the step S2 is 190-240 ℃; the screw speed of the melt extruder described in step S2 was 460-520rpm.
Example 2:
the polypropylene modified material consists of the following raw materials in parts by weight:
PP:80 parts; UHMWPE:20 parts; and (3) filling: 8 parts; and (3) a modifier: 10 parts; nucleating agent: 0.8 parts; coupling agent: 3 parts; antioxidant: 0.5 parts; and (3) a lubricant: 0.8 parts.
In this embodiment, the filler is Nano-CaCO 3 The method comprises the steps of carrying out a first treatment on the surface of the The modifier is white oil; the nucleating agent isInorganic nucleating agents which are aluminosilicate, wherein the aluminosilicate nucleating agents are Halloysite Nanotubes (HNTs); the coupling agent is a titanate coupling agent, and the titanate coupling agent is specifically triisostearyl isopropyl titanate (TTS); the antioxidant 1010 and the antioxidant 168 are mixed according to the mass ratio of 1:2.5; the lubricant is polyethylene wax.
The preparation method is the same as in example 1.
Example 3:
the polypropylene modified material consists of the following raw materials in parts by weight:
PP:85 parts; UHMWPE:15 parts; and (3) filling: 6 parts; and (3) a modifier: 8 parts; nucleating agent: 1 part; coupling agent: 3.5 parts; antioxidant: 0.5 parts; and (3) a lubricant: 0.8 parts.
In this embodiment, the filler is calcium carbonate; the modifier is white oil; the nucleating agent is an organic nucleating agent, and the organic nucleating agent is organic phosphate; the coupling agent is a silane coupling agent, and the silane coupling agent is vinyl trimethoxy silane; the antioxidant 1010 and the antioxidant 168 are mixed according to the mass ratio of 1:2.5; the lubricant is polyethylene wax.
The preparation method is the same as in example 1.
Example 4:
the polypropylene modified material consists of the following raw materials in parts by weight:
PP:80 parts; UHMWPE:20 parts; and (3) filling: 6 parts; and (3) a modifier: 8 parts; nucleating agent: 1 part; coupling agent: 3 parts; antioxidant: 0.5 parts; and (3) a lubricant: 0.8 parts.
In this embodiment, the filler is calcium carbonate; the modifier is white oil; the nucleating agent is an organic nucleating agent, and the organic nucleating agent is organic phosphate; the coupling agent is a titanate coupling agent, and the titanate coupling agent is specifically triisostearyl isopropyl titanate (TTS); the antioxidant 1010 and the antioxidant 168 are mixed according to the mass ratio of 1:2.5; the lubricant is polyethylene wax.
The preparation method is the same as in example 1.
Example 5:
the polypropylene modified material consists of the following raw materials in parts by weight:
PP:85 parts; UHMWPE:15 parts; and (3) filling: 6 parts; and (3) a modifier: 10 parts; nucleating agent: 0.5 parts; coupling agent: 3.5 parts; antioxidant: 0.5 parts; and (3) a lubricant: 0.8 parts.
In this embodiment, the filler is Nano-CaCO 3 The method comprises the steps of carrying out a first treatment on the surface of the The modifier is white oil; the nucleating agent is a high molecular nucleating agent, and the high molecular nucleating agent is specifically vinyl cyclohexane; the coupling agent is a silane coupling agent, and the silane coupling agent is vinyl trimethoxy silane; the antioxidant 1010 and the antioxidant 168 are mixed according to the mass ratio of 1:2.5; the lubricant is polyethylene wax.
The preparation method is the same as in example 1.
Example 6:
the polypropylene modified material consists of the following raw materials in parts by weight:
PP:80 parts; UHMWPE:20 parts; and (3) filling: 8 parts; and (3) a modifier: 10 parts; nucleating agent: 0.5 parts; coupling agent: 3 parts; antioxidant: 0.5 parts; and (3) a lubricant: 0.8 parts.
In this embodiment, the filler is Nano-CaCO 3 The method comprises the steps of carrying out a first treatment on the surface of the The modifier is white oil; the nucleating agent is a high molecular nucleating agent, and the high molecular nucleating agent is specifically vinyl cyclohexane; the coupling agent is a titanate coupling agent, and the titanate coupling agent is specifically triisostearyl isopropyl titanate (TTS); the antioxidant 1010 and the antioxidant 168 are mixed according to the mass ratio of 1:2.5; the lubricant is polyethylene wax.
The preparation method is the same as in example 1.
Comparative example 1:
commercially available conventional polypropylene (PP) materials.
Comparative example 2:
conventional Polyethylene (PE) materials are commercially available.
Experimental analysis of examples 1-6 and comparative examples 1-2:
the test indexes and the test method are as follows:
the density detection method comprises the following steps: GB/T40006.3-2021; the tensile strength is measured by the following steps: GB/T1040-2006; the notch impact strength is detected by the following steps: GB/T1843-2008.
The results of the specific measurement experiments of examples 1 to 6 and comparative examples 1 to 2 are shown in Table 1:
TABLE 1 Polypropylene modification test results for examples 1-6, comparative examples 1-2
Theoretically, UHMWPE is a special polyethylene, has excellent impact resistance, wear resistance and the like, and can improve the toughness of PP without obvious strength reduction. The impact properties of PP can be improved due to the aggregation of UHMWPE crystals and the interconnection between molecular chains forming a complex network continuous structure, but the high entanglement of the UHMWPE molecular chains, the high melt viscosity of UHMWPE and the large viscosity mismatch between the blend components inhibit the polymer melt mixing kinetics, leading to poor blending results and deteriorated properties of PP/UHMWPE blends.
The invention adopts the white oil to improve the dispersion and flow property of UHWMPE in the matrix and promote the dispersion of UHMWPE in the PP matrix; overcomes the defects in the prior art, and in addition, a proper amount of Nano-CaCO is introduced into the blending system 3 The comprehensive performance of the system can be effectively improved, and the strength and toughness of the material are improved.
From the comparison of the above experimental results in table 1, it can be seen that: the performances of the examples 1-6 are obviously better than those of the comparative examples 1-2, particularly the example 1 has the best performance, and the density, the tensile strength and the impact strength are obviously improved; in addition, according to the 6 embodiment schemes provided by the invention, the tensile strength of the polypropylene modified material is improved, and meanwhile, the impact strength of the polypropylene modified material is improved, so that the PP modified material with excellent comprehensive performance is obtained.
Example 7:
the polypropylene modified material obtained based on the optimal formulation of the above example 1 was used as a raw material to prepare a high stiffness rubber blanket, and the preparation method thereof is as follows:
s1: adopts polypropylene modified material particles as a base material,
s2: carrying out hot melt extrusion spinning on the polypropylene modified material particles to obtain polypropylene modified filaments;
s3: the polypropylene modified yarn is sent into a stretcher for stretching treatment;
s4: doubling, doubling and twisting, warping and drafting the polypropylene modified 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 polypropylene modified rubber cloth liner;
s7: and (5) performing quality inspection on the obtained polypropylene modified rubber cloth.
Further, the cross section of the polypropylene modified yarn obtained in the step S2 is hexagonal, and the high-stiffness rubber cloth liner obtained in the step S6 is 680D/60F.
Example 8:
compared with example 7, the difference is that the cross section of the polypropylene modified yarn obtained in the step S2 is hexagonal, and the specification of the high-stiffness rubber cushion cloth obtained in the step S6 is 600D/122F.
Example 9:
compared with example 7, the difference is that the cross section of the polypropylene modified yarn obtained in the step S2 is round, and the high-stiffness rubber laying cloth obtained in the step S6 has the specification of 680D/60F.
Example 10:
compared with example 7, the difference is that the cross section of the polypropylene modified yarn obtained in the step S2 is circular, and the high-stiffness rubber laying cloth obtained in the step S6 has the specification of 600D/122F.
Comparative example 3:
the rubber cloth is prepared from a commercially available conventional polypropylene (PP) material, and the preparation method comprises the following steps:
s1: adopts the conventional polypropylene material particles sold in the market as the base material,
s2: carrying out hot melt extrusion spinning on commercially available conventional polypropylene material particles to obtain polypropylene filaments;
s3: the polypropylene filaments are sent into a stretcher for stretching treatment;
s4: doubling, doubling and twisting the polypropylene yarns obtained in the step S3, warping and drafting;
s5: then sending the fabric into a loom for weaving;
s6: shaping and cutting the fabric obtained in the step S5 to obtain polypropylene rubber backing cloth;
s7: and (5) performing quality inspection on the obtained polypropylene rubber cloth.
Further, the cross section of the polypropylene yarn obtained in the step S2 is round, and the specification of the polypropylene rubber cloth liner obtained in the step S6 is 600D/122F.
Comparative example 4:
the rubber cloth is prepared from a commercially available conventional Polyethylene (PE) material, and the preparation method comprises the following steps:
s1: adopts the commercially available conventional polyethylene material particles as a base material,
s2: carrying out hot melt extrusion spinning on commercially available conventional polyethylene material particles to obtain polyethylene filaments;
s3: feeding the polyethylene filaments into a stretcher for stretching treatment;
s4: doubling, doubling and twisting, warping and drafting the 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 polyethylene rubber backing cloth;
s7: and (5) performing quality inspection on the obtained polyethylene rubber cloth.
Further, the cross section of the polyethylene yarn obtained in the step S2 is round, and the specification of the polyethylene rubber cloth liner obtained in the step S6 is 600D/122F.
The results of the specific measurement experiments of examples 7 to 10 and comparative examples 3 to 4 are shown in Table 2:
TABLE 2 results of test of rubber packing Performance of examples 7-10, comparative examples 3-4
As can be seen from the comparison of the above experimental results in Table 2, the performances of the rubber gaskets of examples 7-10 are significantly better than those of comparative examples 3 and 4, and the performances of the rubber gaskets of examples 7-10 are best compared with those of examples 7-10, and the tensile strength, elongation and stiffness are significantly improved.
In summary, the rubber cloth pad prepared from the polypropylene modified material overcomes the defects in the prior art, and has high stiffness and better tensile strength, and the high stiffness rubber cloth pad is more suitable for special rubber with strong viscosity.
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 polypropylene modified material is characterized by comprising the following raw materials in parts by weight:
PP:60-90 parts; UHMWPE:10-40 parts of a lubricant; and (3) filling: 4-8 parts of a lubricant; and (3) a modifier: 2-10 parts; nucleating agent: 0.1-1 parts; coupling agent: 0.5-4 parts; antioxidant: 0.1-0.5 part; and (3) a lubricant: 0.5-1 part.
2. The polypropylene modified material according to claim 1, which is characterized by comprising the following raw materials in parts by weight:
PP:80-85 parts; UHMWPE:15-20 parts of a lubricant; and (3) filling: 6-8 parts of a lubricant; and (3) a modifier: 8-10 parts of a lubricant; nucleating agent: 0.5-1 part; coupling agent: 3-3.5 parts; antioxidant: 0.5 parts; and (3) a lubricant: 0.8 parts.
3. According to claimThe polypropylene modified material as claimed in claim 1, wherein the filler is kaolin, calcium carbonate, glass fiber, nano-CaCO 3 Any one of them; 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.
4. The polypropylene modified 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.
5. A method for preparing the polypropylene modified material as claimed in claim 1, wherein the method comprises the steps of:
s1: mixing PP, UHMWPE, filler and modifier in the formula amount at high speed in a high-speed mixer at 50-80 ℃, and sieving to obtain a mixture 1;
s2: feeding the mixture 1 obtained in the step S1 into a melt extruder for mixing to obtain a mixture 2;
s3: adding the nucleating agent, the coupling agent, the antioxidant and the lubricant in the formula amount into the mixture 2 obtained in the step S2, and continuously mixing;
s4: and S3, uniformly mixing, cooling and obtaining the polypropylene modified material.
6. The method according to claim 5, wherein the temperature of the melt extruder in step S2 is 190 to 240 ℃; the screw speed of the melt extruder described in step S2 was 460-520rpm.
7. Use of the polypropylene modified material according to any one of claims 1 to 4 or the polypropylene modified material prepared by the preparation method according to claims 5 to 6 for preparing rubber cloth, rubber fiber or rubber film.
8. A high-stiffness rubber blanket, wherein the raw material for preparing the rubber blanket is the polypropylene modified material as claimed in any one of claims 1 to 4 or the polypropylene modified material prepared by the preparation method as claimed in claims 5 to 6.
9. The rubber blanket according to claim 8, wherein the rubber blanket is prepared by the following method:
s1: adopts polypropylene modified material particles as a base material,
s2: carrying out hot melt extrusion spinning on the polypropylene modified material particles to obtain polypropylene modified filaments;
s3: the polypropylene modified yarn is sent into a stretcher for stretching treatment;
s4: doubling, doubling and twisting, warping and drafting the polypropylene modified 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 polypropylene modified rubber cloth liner;
s7: and (5) performing quality inspection on the obtained polypropylene modified rubber cloth.
10. A rubber blanket according to claim 9, wherein the cross section of the polypropylene modified yarn obtained in S2 is circular or hexagonal.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073783A (en) * | 2011-10-25 | 2013-05-01 | 昆山博富新材料科技股份有限公司 | Polypropylene-high molecular weight high density polyethylene-filling material blend and preparation method thereof |
| CN112281306A (en) * | 2020-11-17 | 2021-01-29 | 王向 | High-strength non-woven fabric and preparation method thereof |
| CN113754955A (en) * | 2021-08-27 | 2021-12-07 | 滁州杰事杰新材料有限公司 | High-elongation-at-break and scratch-resistant polypropylene composite material and preparation method thereof |
| CN116426081A (en) * | 2023-03-01 | 2023-07-14 | 盘锦海兴科技股份有限公司 | Polypropylene master batch for injection molding and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073783A (en) * | 2011-10-25 | 2013-05-01 | 昆山博富新材料科技股份有限公司 | Polypropylene-high molecular weight high density polyethylene-filling material blend and preparation method thereof |
| CN112281306A (en) * | 2020-11-17 | 2021-01-29 | 王向 | High-strength non-woven fabric and preparation method thereof |
| CN113754955A (en) * | 2021-08-27 | 2021-12-07 | 滁州杰事杰新材料有限公司 | High-elongation-at-break and scratch-resistant polypropylene composite material and preparation method thereof |
| CN116426081A (en) * | 2023-03-01 | 2023-07-14 | 盘锦海兴科技股份有限公司 | Polypropylene master batch for injection molding and preparation method thereof |
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