CN108299686B - Wrapping cloth V belt and preparation method thereof - Google Patents
Wrapping cloth V belt and preparation method thereof Download PDFInfo
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- CN108299686B CN108299686B CN201711499099.4A CN201711499099A CN108299686B CN 108299686 B CN108299686 B CN 108299686B CN 201711499099 A CN201711499099 A CN 201711499099A CN 108299686 B CN108299686 B CN 108299686B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
- B65G15/34—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic System
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
- D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
- D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
Abstract
The invention provides a preparation method of a wrapping cloth V-belt, which is characterized in that the surface of base cloth is etched, and a silane coupling agent is grafted on the surface of the base cloth, so that the interaction force between the base cloth and a rubber matrix is greatly enhanced, the slipping between the base cloth and the rubber matrix in the use process is prevented, and the V-belt fracture caused by stress concentration is reduced. Secondly, PEN is adopted to modify the glass fiber, and the PEN is a high-performance polymer with nitrile groups on side chains, so that the modified glass fiber wrapping cloth has high heat resistance, mechanical property strength and creep resistance. Thirdly, the addition of the tackifier enhances the interaction between the fiber phase and the rubber phase and improves the mechanical property of the fiber phase and the rubber phase. Therefore, the wrapping cloth V belt prepared by the invention and the preparation method thereof have the advantages of high strength, good tensile property and excellent aging resistance.
Description
Technical Field
The invention relates to the technical field of material forming and processing, in particular to a wrapping cloth V-shaped belt and a preparation method thereof.
Background
The V belt is a conveyer belt widely used for mechanical transmission and industrial use, the bottom layer rubber is mainly formed by mixing and vulcanizing natural rubber, styrene butadiene rubber and other mixed rubber, in the vulcanizing process, partial canvas, polyester fiber and the like can be added into the rubber, so that the mechanical property of the V belt is improved, but because of the defects of the rubber, the service strength of the V belt is low, the V belt is easy to dent, the V belt is easy to deform in the using process, the fatigue resistance is poor, because of the addition of the fiber, the V belt is unreasonable in compatibility with the rubber sheet, the fiber and the rubber sheet can be frequently caused to slip and deviate, the stress of the rubber belt is uneven, the V belt finally causes breakage, and the immeasurable loss is.
For example, chinese patent document No. 201310047304.9 reports a cloth-wrapped V-belt and a method for manufacturing the same, which belongs to the technical field of mechanical transmission equipment and materials, the cloth-wrapped V-belt includes a core layer and a cloth-wrapped layer wrapped on the outer surface of the core layer, the core layer sequentially includes a primer layer made of fiber film, a viscose layer, a polyester hard cord and a cushion rubber layer from bottom to top, and the fiber film includes natural rubber, styrene butadiene rubber, chloroprene rubber and reclaimed rubber, an anti-aging agent, stearic acid, magnesium oxide, carbon black, a softener, short fibers, zinc oxide, a filler and an accelerator.
With the research progress of the fiber reinforced composite material, the industrial application technology of the fiber reinforced composite material tends to be mature, and the use strength of the V-belt can be greatly improved by adding the fiber reinforced composite material into the packaging V-belt, so that the interaction between the V-belt and the rubber matrix is enhanced. The inventor considers that the wrapping cloth V belt has high strength, good tensile property and excellent aging resistance and the preparation method thereof.
Disclosure of Invention
The invention mainly aims to provide a wrapping cloth V belt and a preparation method thereof, and the wrapping cloth V belt has high strength, good tensile property and excellent aging resistance.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a preparation method of a wrapping cloth V belt comprises the following steps: putting poly (arylene ether nitrile) in dimethylformamide, adding zinc chloride, stirring at 60-80 ℃ to obtain a PEN solution with solid content of 15-30%, uniformly coating the PEN solution on glass fiber cloth, and drying to obtain modified wrapping cloth; soaking the ultra-high molecular weight polyethylene fiber in 30% sodium hydroxide solution for 40-60h, and cleaning to obtain etched ultra-high molecular weight polyethylene fiber; adding the etched ultrahigh molecular weight polyethylene into an ethanol solution, adding a silane coupling agent, heating and stirring for 30-60min, and drying to obtain modified base cloth; mixing the rubber matrix, the modified base fabric and the tackifier in a mixing roll for 15-20min, adding a vulcanizing agent, an activating agent, microcrystalline cellulose and an accelerating agent, and standing for 3-5h to obtain raw rubber; and (3) coating the raw rubber with the modified wrapping cloth, cutting into a V belt sample, and vulcanizing for 30-45min to obtain the wrapping cloth V belt.
Preferably, the rubber matrix is a mixture of natural rubber and styrene-butadiene rubber.
Preferably, the mass ratio of the natural rubber to the styrene butadiene rubber is 3: 2.
Preferably, the activator is stearic acid.
Preferably, the vulcanizing agent is sulfur.
Preferably, the accelerator is tetramethylthiuram disulfide.
Preferably, the silane coupling agent is gamma-glycidoxypropyltrimethoxysilane.
Preferably, the tackifier is a mixture of TKM-M and RF-90.
Preferably, the mass ratio of the TKM-M to the RF-90 is 2: 1.
Preferably, in the step of obtaining the modified wrapping cloth, the stirring time is 2-3 h.
The invention provides a preparation method of a wrapping cloth V-belt, which is characterized in that the surface of base cloth is etched, and a silane coupling agent is grafted on the surface of the base cloth, so that the interaction force between the base cloth and a rubber matrix is greatly enhanced, the slipping between the base cloth and the rubber matrix in the use process is prevented, and the V-belt fracture caused by stress concentration is reduced. Secondly, PEN is adopted to modify the glass fiber, and the PEN is a high-performance polymer with nitrile groups on side chains, so that the modified glass fiber wrapping cloth has high heat resistance, mechanical property strength and creep resistance. Thirdly, the addition of the tackifier enhances the interaction between the fiber phase and the rubber phase and improves the mechanical property of the fiber phase and the rubber phase. Therefore, the wrapping cloth V belt prepared by the invention and the preparation method thereof have the advantages of high strength, good tensile property and excellent aging resistance.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
The invention provides a preparation method of a wrapping cloth V belt, which comprises the following steps: putting poly (arylene ether nitrile) (PEN) in Dimethylformamide (DMF), adding zinc chloride, stirring at 60-80 ℃ to obtain a PEN solution with solid content of 15-30%, uniformly coating the PEN solution on glass fiber cloth, and drying to obtain modified wrapping cloth; soaking the ultra-high molecular weight polyethylene fiber in 30% sodium hydroxide solution for 40-60h, and cleaning to obtain etched ultra-high molecular weight polyethylene fiber; adding the etched ultrahigh molecular weight polyethylene into an ethanol solution, adding a silane coupling agent, heating and stirring for 30-60min, and drying to obtain modified base cloth; mixing the rubber matrix, the modified base fabric and the tackifier in a mixing roll for 15-20min, adding a vulcanizing agent, an activator, microcrystalline cellulose (MCC) and an accelerant, and standing for 3-5h to obtain raw rubber; and (3) coating the raw rubber with the modified wrapping cloth, cutting into a V belt sample, and vulcanizing for 30-45min to obtain the wrapping cloth V belt.
Preferably, the rubber matrix is a mixture of natural rubber and styrene butadiene rubber; the rubber matrix is natural rubber with the mass ratio of 3: 2; the activating agent is stearic acid; the vulcanizing agent is sulfur; the accelerator is tetramethylthiuram disulfide (TT); the silane coupling agent is gamma-glycidoxypropyltrimethoxysilane (KH-560); the tackifier is a mixture of TKM-M and RF-90, and the mass ratio is preferably 2: 1; in the step of obtaining the modified wrapping cloth, the stirring time is 2-3 h. The molecular weight of the ultrahigh molecular weight polyethylene is preferably 150W or more, more preferably 150-200W.
According to the invention, the surface of the base cloth is etched, and the silane coupling agent is grafted on the surface of the base cloth, so that the interaction force between the base cloth and the rubber matrix is greatly enhanced, the slipping between the base cloth and the rubber matrix in the use process is prevented, and the V-belt breakage caused by stress concentration is reduced.
The glass fiber cloth adopted by the invention is preferably PPTA fiber. The PPTA as a high-strength fiber has more reactive functional groups on the surface of the fiber due to the special structure, improves the grafting rate of PEN, and reduces the cost while improving the action of the PPTA and a rubber matrix due to low price.
The invention adopts PEN to modify the glass fiber, and the PEN is a high-performance polymer with nitrile groups on side chains, so that the modified glass fiber wrapping cloth has high heat resistance, mechanical property strength and creep resistance.
The addition of the tackifier enhances the interaction between different phases (fiber phase and rubber phase) and improves the mechanical properties of the fiber/rubber composite material.
The microcrystalline cellulose adopted by the invention is natural crystalline cellulose with a rod-shaped geometric structure and a high specific surface area, replaces filling materials such as white carbon black, carbon black and the like, and has the characteristics of environmental protection, low price, small abrasion to machines and the like.
For further understanding of the present invention, the following embodiments are provided to illustrate the technical solutions of the present invention in detail, and the scope of the present invention is not limited by the following embodiments.
Example 1
Weighing 10 parts by weight of PEN, placing the PEN in DMF, adding 1 part by weight of zinc chloride, stirring for 2-3h at 60-80 ℃ to obtain a PEN solution with solid content of 15-30%, uniformly coating the PEN solution on glass fiber cloth, and drying to obtain the modified wrapping cloth.
And soaking 30 parts by weight of ultrahigh molecular weight polyethylene fibers in 30% sodium hydroxide solution for 40-60h, and washing off alkali liquor to obtain the etched ultrahigh molecular weight polyethylene fibers.
And adding the etched ultrahigh molecular weight polyethylene into an ethanol solution, adding 1 part by weight of silane for coupling, heating and stirring for 30-60min, and drying for later use after the reaction is finished to obtain the modified base fabric.
Mixing the rubber matrix, the modified base fabric and the tackifier in a mixing roll for 15-20min, adding 2 parts by weight of vulcanizing agent, 5 parts by weight of activating agent, 10 parts by weight of MCC and 1 part by weight of accelerator to obtain raw rubber, and standing the raw rubber for 3-5h to be vulcanized for later use.
And (3) coating the raw rubber with the modified wrapping cloth, cutting the raw rubber into V-belt samples, and vulcanizing the V-belt samples in a vulcanizing machine for 30-45min to obtain finished products.
The tensile strength was found to be 35MPa, the elongation at break was found to be 500% and the tensile strength after aging was found to be 33 MPa.
Example 2
Weighing 15 parts by weight of PEN into DMF, adding 1.5 parts by weight of zinc chloride, stirring for 2-3h at 60-80 ℃ to obtain a PEN solution with solid content of 15-30%, uniformly coating the PEN solution on glass fiber cloth, and drying to obtain the modified base cloth.
And soaking 40 parts by weight of ultrahigh molecular weight polyethylene fibers in 30% sodium hydroxide solution for 40-60h, and washing off alkali liquor to obtain the etched ultrahigh molecular weight polyethylene fibers.
And adding the etched ultrahigh molecular weight polyethylene into an ethanol solution, adding 3 parts by weight of silane for coupling, heating and stirring for 30-60min, and drying for later use after the reaction is finished to obtain the modified base fabric.
Mixing the rubber matrix, the modified base fabric and the tackifier in a mixing roll for 15-20min, adding 2 parts by weight of vulcanizing agent, 5 parts by weight of activating agent, 10 parts by weight of MCC and 1 part by weight of accelerator to obtain raw rubber, and standing the raw rubber for 3-5h to be vulcanized for later use.
And (3) coating the raw rubber with the modified wrapping cloth, cutting the raw rubber into V-belt samples, and vulcanizing the V-belt samples in a vulcanizing machine for 30-45min to obtain finished products.
The tensile strength was found to be 38MPa, the elongation at break was found to be 550%, and the tensile strength after aging was found to be 35 MPa.
Example 3
Weighing 20 parts by weight of PEN into DMF, adding 2 parts by weight of zinc chloride, stirring for 2-3h at 60-80 ℃ to obtain a PEN solution with solid content of 15-30%, uniformly coating the PEN solution on PPTA fiber cloth, and drying to obtain the modified wrapping cloth.
Soaking 50 parts by weight of ultrahigh molecular weight polyethylene fiber in 30% sodium hydroxide solution for 40-60h, and washing off alkali liquor to obtain the etched ultrahigh molecular weight polyethylene fiber.
And adding the etched ultrahigh molecular weight polyethylene into an ethanol solution, adding 5 parts by weight of silane for coupling, heating and stirring for 30-60min, and drying for later use after the reaction is finished to obtain the modified base fabric.
Mixing the rubber matrix, the modified base fabric and the tackifier in a mixing roll for 15-20min, adding 2 parts by weight of vulcanizing agent, 5 parts by weight of activating agent, 10 parts by weight of MCC and 1 part by weight of accelerator to obtain raw rubber, and standing the raw rubber for 3-5h to be vulcanized for later use.
And (3) coating the raw rubber with the modified wrapping cloth, cutting the raw rubber into V-belt samples, and vulcanizing the V-belt samples in a vulcanizing machine for 30-45min to obtain finished products.
The tensile strength was found to be 38MPa, the elongation at break was found to be 600% and the tensile strength after aging was found to be 37 MPa.
The same production method as in example 1 was used, and the raw material formulation was as shown in table 1, to obtain a wrapping cloth V tape. The properties of the V-belts of the wrapping cloths prepared in comparative example were measured, and the results are shown in table 1.
TABLE 1 raw materials and results of property measurements for comparative examples of the present invention
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A preparation method of a wrapping cloth V belt is characterized by comprising the following steps:
putting 10 parts by weight of poly (arylene ether nitrile) into dimethylformamide, adding 1 part by weight of zinc chloride, stirring at 60-80 ℃ for 2-3h to obtain a PEN solution with solid content of 15-30%, uniformly coating the PEN solution on glass fiber cloth, and drying to obtain modified wrapping cloth;
soaking 30 parts by weight of ultrahigh molecular weight polyethylene fibers in 30% sodium hydroxide solution for 40-60h, and cleaning to obtain etched ultrahigh molecular weight polyethylene fibers;
adding the etched ultrahigh molecular weight polyethylene into an ethanol solution, adding 1 part by weight of silane coupling agent, heating and stirring for 30-60min, and drying to obtain modified base cloth;
mixing the rubber matrix, the modified base fabric and the tackifier for 15-20min, adding 2 parts by weight of vulcanizing agent, 5 parts by weight of activating agent, 10 parts by weight of microcrystalline cellulose and 1 part by weight of accelerator, and standing for 3-5h to obtain raw rubber;
coating the raw rubber with the modified wrapping cloth, cutting into a V belt sample, vulcanizing for 30-45min to obtain a wrapping cloth V belt,
the rubber matrix is a mixture of natural rubber and styrene butadiene rubber, the mass ratio of the natural rubber to the styrene butadiene rubber is 3:2,
the vulcanizing agent is sulfur, and the vulcanizing agent is sulfur,
the accelerator is tetramethyl thiuram disulfide,
the activating agent is stearic acid, and the activating agent is stearic acid,
the silane coupling agent is gamma-glycidol ether oxygen propyl trimethoxy silane,
in the step of obtaining the modified wrapping cloth, the stirring time is 2-3 h;
the tackifier is a mixture of TKM-M and RF-90, and the mass ratio is 2: 1;
the molecular weight of the ultra-high molecular weight polyethylene is 150-200W.
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| CN201711499099.4A CN108299686B (en) | 2017-12-23 | 2017-12-23 | Wrapping cloth V belt and preparation method thereof |
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| CN201711499099.4A CN108299686B (en) | 2017-12-23 | 2017-12-23 | Wrapping cloth V belt and preparation method thereof |
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| CN108299686B true CN108299686B (en) | 2020-07-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007084219A1 (en) * | 2006-01-17 | 2007-07-26 | Exxonmobil Chemical Patents Inc. | Process for making dynamically-loaded articles comprising propylene-based elastomers, composition for use in such processes, and article made using such processes |
| CN102530469A (en) * | 2011-12-22 | 2012-07-04 | 北京化工大学 | Light high-strength rubber conveying belt and preparation method thereof |
| CN103159987A (en) * | 2013-02-02 | 2013-06-19 | 浙江凯欧传动带有限公司 | Wrapping cloth V belt and manufacture method thereof |
| CN106838122A (en) * | 2016-12-28 | 2017-06-13 | 浙江四海橡胶有限公司 | A kind of Wide-angle cloth infantees V bands and preparation method thereof |
-
2017
- 2017-12-23 CN CN201711499099.4A patent/CN108299686B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007084219A1 (en) * | 2006-01-17 | 2007-07-26 | Exxonmobil Chemical Patents Inc. | Process for making dynamically-loaded articles comprising propylene-based elastomers, composition for use in such processes, and article made using such processes |
| CN102530469A (en) * | 2011-12-22 | 2012-07-04 | 北京化工大学 | Light high-strength rubber conveying belt and preparation method thereof |
| CN103159987A (en) * | 2013-02-02 | 2013-06-19 | 浙江凯欧传动带有限公司 | Wrapping cloth V belt and manufacture method thereof |
| CN106838122A (en) * | 2016-12-28 | 2017-06-13 | 浙江四海橡胶有限公司 | A kind of Wide-angle cloth infantees V bands and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "聚芳醚腈连续纤维增强复合材料制备与性能研究";温汉东等;《塑料工业》;20110831;第39卷(第8期);第81-84页 * |
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