CN109292363B - Ultra-high temperature resistant plane belt - Google Patents
Ultra-high temperature resistant plane belt Download PDFInfo
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- CN109292363B CN109292363B CN201810823145.XA CN201810823145A CN109292363B CN 109292363 B CN109292363 B CN 109292363B CN 201810823145 A CN201810823145 A CN 201810823145A CN 109292363 B CN109292363 B CN 109292363B
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- 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
- B65G15/38—Belts or like endless load-carriers made of rubber or plastics with flame-resistant layers, e.g. of asbestos, glass
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/06—Inorganic compounds or elements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/08—Organic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
- D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
- D06M2101/36—Aromatic polyamides
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Abstract
The invention discloses a super-high temperature resistant planar belt, which comprises a bottom surface, a middle enhancement layer, a main body covering layer and fluororubber processing buffer glue, wherein the bottom surface is aramid fiber cloth treated by fluororubber mucilage, the middle enhancement layer is an aramid fiber line layer consisting of aramid fiber lines treated by fluororubber mucilage, and the subject covering layer is fluororubber; the method comprises the steps of coating a first buffer adhesive on a single surface of aramid fiber cloth, winding aramid fiber threads on the first buffer adhesive to form an aramid fiber thread layer, coating a second buffer adhesive on the aramid fiber thread layer, coating a main body covering layer on the second buffer adhesive to obtain a plane belt framework, placing the plane belt framework after edge cutting on a hot vulcanizing machine for hot vulcanization lapping operation, and cooling and standing after vulcanization to obtain the ultra-high temperature resistant plane belt. The ultra-high temperature resistant plane belt provided by the invention can meet the requirements of normal use temperature of 200-220 ℃ and special industrial use occasions requiring high wear resistance.
Description
Technical Field
The invention relates to the technical field of belt transmission, in particular to an ultra-high temperature resistant planar belt.
Background
The traditional heat-resistant conveying belt is formed by covering a plurality of layers of rubber cotton canvas (polyester cotton cloth) or polyester canvas with high-temperature-resistant or heat-resistant rubber at the upper part and the lower part, and is bonded together through high-temperature vulcanization, mainly comprises a canvas bottom surface, an intermediate enhancement layer and main body covering rubber, and is mainly used for the industries of metallurgy, building and the like, conveying high-temperature materials such as sintered ores, coke, cement clinker and the like, wherein the temperature of the materials is always 200-500 ℃, sometimes even more than 800 ℃, and the high-temperature-resistant conveying belt is required to be adapted to the materials under the action of severe abrasion, impact and scratching.
The middle reinforced layer in the prior art generally adopts steel wires, but has the problems of small elastic modulus, poor adhesion with rubber and the like, along with the technical development, a cotton rope made of glass fiber materials appears, and the reinforced layer material has the advantages of high tensile strength, large elastic modulus, good heat resistance, good adhesion with rubber and the like. However, glass fiber cords also suffer from a number of disadvantages, such as brittleness, poor buckling resistance, and poor stability to impact loads, which results in less reliable belt use.
The main body covering rubber in the prior art is usually polyurethane rubber or chloroprene rubber, and the polyurethane rubber has the advantages of common liquid rubber, has good wear resistance, simple process and convenient forming, but the polyurethane rubber has poor heat resistance and water resistance, is easy to be sticky at about 80 ℃, is easy to be hydrolyzed in a humid environment, and causes the strength of a conveyor belt to be obviously reduced. Chloroprene rubber has excellent weather-proof, oil-proof, flame-retardant and outstanding adhesive properties, but chloroprene rubber has poor stability, easy scorching and poor heat resistance, so that the conveyor belt has low tensile strength, large shape and short service life.
The conveying belt manufactured by the existing rubber matching system and processing conditions inevitably has micro-cracks, impurities, micro-gaps and other micro-defects; and the shearing strength, high temperature resistance and wear resistance of the conveyor belt are not ideal enough, so that the problems of reduction of transmission power and service life and the like are easily caused.
The chemical industry HG2297-92 divides the heat-resistant conveyer belt into T1, T2 and T3 grades, and the corresponding test temperatures are 100, 125 and 150 ℃ respectively, but the heat-resistant conveyer belt can not meet the current use requirements obviously. There is therefore a need for a comprehensive understanding of the bottom surface, intermediate reinforcement layer, body cover glue and mating system and process of heat-resistant conveyor belts to develop new longer life heat-resistant conveyor belts to meet the needs of these industry developments.
Disclosure of Invention
In view of the defects of the prior art, the invention mainly aims to provide the ultra-high temperature resistant planar belt, which is used for solving the problems of low heat resistant temperature, poor wear resistance and the like of the heat resistant conveyor belt in the prior art.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the ultra-high temperature resistant plane belt comprises a bottom surface, a middle enhancement layer and a main body covering layer, and further comprises a first buffer rubber and a second buffer rubber which are processed by fluororubber, wherein the bottom surface is aramid fiber cloth processed by fluororubber mucilage, the middle enhancement layer is an aramid fiber line layer formed by aramid fiber lines processed by the fluororubber mucilage, and the subject covering layer is fluororubber;
the method comprises the steps of coating a first buffer adhesive on a single surface of aramid fiber cloth, winding aramid fiber threads on the first buffer adhesive to form an aramid fiber thread layer, coating a second buffer adhesive on the aramid fiber thread layer, coating a main body covering layer on the second buffer adhesive to obtain a plane belt framework, placing the plane belt framework after edge cutting on a hot vulcanizing machine for hot vulcanization lapping operation, and cooling and standing after vulcanization to obtain the ultra-high temperature resistant plane belt.
Preferably, the aramid fiber thread layer is formed by weaving a first aramid fiber thread, a second aramid fiber thread and a third aramid fiber thread in a three-dimensional winding mode at a certain angle.
Preferably, the included angle formed by the first aramid fiber line and the second aramid fiber line ranges from 30 degrees to 60 degrees, and the included angle formed by the first aramid fiber line and the third aramid fiber line ranges from 120 degrees to 150 degrees.
Preferably, the step of the hot-vulcanization lapping operation is: first vulcanizing at 165-170 ℃ and 8-12 MPa for 10-20 min, and then gradually heating to 220-240 ℃ for second vulcanizing for 24 h. The hot vulcanization lapping operation can ensure high joint efficiency, and is very stable and long in joint service life.
Preferably, the specific treatment method of the aramid fiber cloth treated by the fluororubber mucilage comprises the following steps:
preparation of S1 fluororubber mucilage: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill with a roll gap of 0.3-0.5 mm, and plasticating for 8-10 times; adding the plasticated fluororubber into an open mill, mixing at 40-60 ℃, sequentially adding 2-3 parts of graphene oxide, 10-20 parts of spray carbon black, 5-8 parts of N-isopropyl maleimide and 10-20 parts of ethyl carbamate during mixing, and mixing for 15-30 min; adding the mixed fluororubber and 5-8 parts of toluene into a rubber cement machine, and uniformly dispersing in an ultrasonic-assisted stirring manner to obtain fluororubber rubber cement;
s2 aramid fiber cloth surface modification: dissolving di-tert-butoxydiacetoxysilane in ethanol to prepare an ethanol solution with the mass percentage of 2-6%, and soaking the aramid fiber cloth in the ethanol solution for surface modification for 2-5 h to obtain the surface-modified aramid fiber cloth;
s3 coating treatment: and (3) coating one side of the fluororubber mucilage obtained in the step (S1) on the aramid fiber cloth with the modified surface obtained in the step (S2) to obtain the aramid fiber cloth treated by the fluororubber mucilage.
Preferably, the specific treatment method of the aramid fiber yarn treated by the fluororubber mucilage comprises the following steps:
preparation of S1 fluororubber mucilage: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill with a roll gap of 0.3-0.5 mm, and plasticating for 8-10 times; adding the plasticated fluororubber into an open mill, mixing at 40-60 ℃, sequentially adding 2-3 parts of graphene oxide, 10-20 parts of spray carbon black, 5-8 parts of N-isopropyl maleimide and 10-20 parts of ethyl carbamate during mixing, and mixing for 15-30 min; adding the mixed fluororubber and 5-8 parts of toluene into a rubber cement machine, and uniformly dispersing in an ultrasonic-assisted stirring manner to obtain fluororubber rubber cement;
s2 aramid fiber yarn surface modification: dipping an aramid fiber wire in a salicylic acid solution with graphene oxide as a solute, wherein the mass percentage of the graphene oxide is 2-5%, the dipping time is 20-30 min, and meanwhile, irradiating with ultraviolet rays with irradiation energy of 2-4J/cm 2 for 5-15 min to obtain a surface-modified aramid fiber wire;
s3 treatment of fluororubber mucilage: and (3) dipping the surface-modified aramid fiber yarn obtained in the step (S2) in the fluororubber mucilage obtained in the step (S1) for 30-60 min to obtain the aramid fiber yarn treated by the fluororubber mucilage.
Preferably, the preparation method of the fluororubber processing cushion gum comprises the following steps: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill, and performing plastication for 4-6 times; adding the plasticated fluororubber into an open mill, mixing at 40-60 ℃, sequentially adding 8-12 parts of maleic anhydride polyethylene, 3-5 parts of dibutyl phthalate or dioctyl phthalate, 5-8 parts of talcum powder or aluminum powder, 8-12 parts of N-isopropyl maleimide, 6-8 parts of ethyl acetate and 10-20 parts of spray carbon black in the mixing process, and mixing for 15-30 min; and (3) thinly passing the mixed buffer rubber for 4-6 times through an open mill with the roll spacing of 0.1-0.5 mm to obtain a first buffer rubber (2), and thinly passing the mixed buffer rubber for 4-6 times through the open mill with the roll spacing of 0.3-1 mm to obtain a second buffer rubber (4).
Preferably, the fluororubber is fluorosilicone rubber or fluororubber 26.
The invention has the beneficial effects that:
according to the invention, aramid fibers with excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like are selected as the bottom surface and the middle reinforcing layer, and aiming at the problems of smooth surface, strong chemical inertness, poor bonding property with rubber and the like of the aramid fibers, the physical and chemical states of the surface of the aramid fibers are improved by a surface modification method, the bonding property with a matrix is improved, and the combination of the aramid fibers and the rubber and the compatibility of an integral matching system are further enhanced by selecting fluororubber mucilage with the same components as those of the main body covering rubber for further treatment.
According to the invention, the fluororubber mucilage with the same components is used for treating aramid fiber cloth and aramid fiber yarns, so that the high-temperature vulcanization of the produced plane belt framework under the same vulcanization condition is facilitated, the obtained plane belt has a regular internal structure and has no defects of gaps, cracks, impurities and the like, and the problem of the performance reduction of the conveyor belt after long-time high-temperature use is solved.
The fluororubber processing cushion gum not only plays a role in buffering elastomers, but also can be combined with the bottom surface, the middle reinforcing layer and the main body covering layer more firmly through an optimal formula.
In general, the ultra-high temperature resistant plane belt provided by the invention can meet the requirements of normal use temperature of 200-220 ℃ and special industrial use occasions requiring high wear resistance.
Drawings
FIG. 1 is a schematic structural diagram of a super-high temperature resistant planar belt according to the present invention;
FIG. 2 is a schematic diagram of the winding manner of the aramid fiber yarn in the ultra-high temperature resistant planar belt according to the present invention;
FIG. 3 is a partially enlarged view of the manner in which the aramid fiber yarn of the present invention is wound;
the novel aramid fiber fabric comprises 1 aramid fiber cloth, 2, first buffer glue, 3, an aramid fiber line layer, 4, second buffer glue, 5, a main body covering layer, 301, a first aramid fiber line, 302, a second aramid fiber line, 303 and a third aramid fiber line.
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.
Example 1
As shown in fig. 1, 2 and 3, the ultra-high temperature resistant planar belt comprises a bottom surface, a middle reinforcing layer and a main body covering layer, the planar belt further comprises a first cushion rubber 2 and a second cushion rubber 4 which are processed by fluororubber, the bottom surface is aramid fiber cloth 1 processed by fluororubber mucilage, the middle reinforcing layer is an aramid fiber line layer 3 formed by aramid fiber lines processed by the fluororubber mucilage, and the subject covering layer 5 is fluororubber;
the method comprises the steps of coating a first buffer adhesive 2 on a single surface of aramid fiber cloth 1, winding aramid fiber threads on the first buffer adhesive 2 to form an aramid fiber thread layer 3, coating a second buffer adhesive 4 on the aramid fiber thread layer 3, coating a main body covering layer 5 on the second buffer adhesive 4 to obtain a plane belt framework, placing the plane belt framework after edge cutting on a hot vulcanizing machine for hot vulcanization lapping operation, cooling after vulcanization, and standing to obtain the ultra-high temperature resistant plane belt.
The aramid fiber line layer is formed by weaving a first aramid fiber line 301, a second aramid fiber line 302 and a third aramid fiber line 303 in a three-dimensional winding mode according to a certain angle.
The included angle range formed by the first aramid fiber line 301 and the second aramid fiber line 302 is 30 degrees, and the included angle range formed by the first aramid fiber line 301 and the third aramid fiber line 303 is 120 degrees.
The hot vulcanization lapping operation comprises the following steps: first vulcanizing at 165 ℃ and 8MPa for 20min, then gradually heating to 220 ℃ for second vulcanizing for 24 h.
The specific treatment method of the aramid fiber cloth 1 treated by the fluororubber mucilage comprises the following steps:
preparation of S1 fluororubber mucilage: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill with a roll spacing of 0.3mm, and plasticating for 8 times; adding the plasticated fluororubber into an open mill, mixing at 40 ℃, sequentially adding 2 parts of graphene oxide, 10 parts of spray carbon black, 5 parts of N-isopropyl maleimide and 10 parts of ethyl carbamate during mixing, and mixing for 15 min; adding the mixed fluororubber and 5 parts of toluene into a paste machine, and uniformly dispersing in an ultrasonic-assisted stirring manner to obtain fluororubber paste;
s2 aramid fiber cloth surface modification: dissolving di-tert-butoxydiacetoxysilane in ethanol to prepare an ethanol solution with the mass percentage of 2%, and soaking the aramid fiber cloth in the ethanol solution for surface modification treatment for 2 hours to obtain the surface-modified aramid fiber cloth;
s3 coating treatment: and (3) coating one side of the fluororubber mucilage obtained in the step (S1) on the aramid fiber cloth with the modified surface obtained in the step (S2) to obtain the aramid fiber cloth treated by the fluororubber mucilage.
The specific treatment method of the aramid fiber yarn treated by the fluororubber mucilage comprises the following steps:
preparation of S1 fluororubber mucilage: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill with a roll spacing of 0.3mm, and plasticating for 8 times; adding the plasticated fluororubber into an open mill, mixing at 40 ℃, sequentially adding 2 parts of graphene oxide, 10 parts of spray carbon black, 5 parts of N-isopropyl maleimide and 10 parts of ethyl carbamate during mixing, and mixing for 15 min; adding the mixed fluororubber and 5 parts of toluene into a paste machine, and uniformly dispersing in an ultrasonic-assisted stirring manner to obtain fluororubber paste;
s2 aramid fiber yarn surface modification: dipping an aramid fiber wire in a salicylic acid solution taking graphene oxide as a solute, wherein the mass percent of the graphene oxide is 2%, the dipping time is 20min, and meanwhile, irradiating by adopting ultraviolet rays with the irradiation energy of 2J/cm2 for 5min to obtain a surface-modified aramid fiber wire;
s3 treatment of fluororubber mucilage: and (3) dipping the surface-modified aramid fiber yarn obtained in the step (S2) in the fluororubber mucilage obtained in the step (S1) for 30min to obtain the aramid fiber yarn treated by the fluororubber mucilage.
The preparation method of the fluororubber processing buffer rubber comprises the following steps: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill, and performing plastication for 4 times; adding the plasticated fluororubber into an open mill, mixing at 40 ℃, sequentially adding 8 parts of maleic anhydride polyethylene, 3 parts of dibutyl phthalate or dioctyl phthalate, 5 parts of talcum powder or aluminum powder, 8 parts of N-isopropyl maleimide, 6 parts of ethyl acetate and 10 parts of spray carbon black in the mixing process, and mixing for 15 min; and thinly passing the mixed buffer rubber for 4 times through an open mill with the roller spacing of 0.1mm to obtain a first buffer rubber 2, and thinly passing the mixed buffer rubber for 4 times through an open mill with the roller spacing of 0.3mm to obtain a second buffer rubber 4.
The fluorine rubber is fluorine silicon rubber.
Example 2
The ultra-high temperature resistant plane belt comprises a bottom surface, a middle enhancement layer and a main body covering layer, and further comprises a first buffer glue 2 and a second buffer glue 4 which are processed by fluororubber, wherein the bottom surface is aramid fiber cloth 1 processed by fluororubber mucilage, the middle enhancement layer is an aramid fiber line layer 3 consisting of aramid fiber lines processed by the fluororubber mucilage, and the subject covering layer 5 is fluororubber;
the method comprises the steps of coating a first buffer adhesive 2 on a single surface of aramid fiber cloth 1, winding aramid fiber threads on the first buffer adhesive 2 to form an aramid fiber thread layer 3, coating a second buffer adhesive 4 on the aramid fiber thread layer 3, coating a main body covering layer 5 on the second buffer adhesive 4 to obtain a plane belt framework, placing the plane belt framework after edge cutting on a hot vulcanizing machine for hot vulcanization lapping operation, cooling after vulcanization, and standing to obtain the ultra-high temperature resistant plane belt.
The aramid fiber line layer is formed by weaving a first aramid fiber line 301, a second aramid fiber line 302 and a third aramid fiber line 303 in a three-dimensional winding mode according to a certain angle.
The included angle range formed by the first aramid fiber line 301 and the second aramid fiber line 302 is 60 degrees, and the included angle range formed by the first aramid fiber line 301 and the third aramid fiber line 303 is 150 degrees.
Preferably, the step of the hot-vulcanization lapping operation is: first vulcanizing at 170 deg.C and 12MPa for 20min, then gradually heating to 240 deg.C for second vulcanizing for 24 h.
Preferably, the specific treatment method of the aramid fiber cloth treated by the fluororubber mucilage comprises the following steps:
preparation of S1 fluororubber mucilage: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill with a roll spacing of 0.5mm, and performing plastication by thinly passing the mixture for 10 times; adding the plasticated fluororubber into an open mill, mixing at 60 ℃, sequentially adding 3 parts of graphene oxide, 20 parts of spray carbon black, 8 parts of N-isopropyl maleimide and 20 parts of ethyl carbamate during mixing, and mixing for 30 min; adding the mixed fluororubber and 8 parts of toluene into a rubber cement machine, and uniformly dispersing in an ultrasonic-assisted stirring manner to obtain fluororubber rubber cement;
s2 aramid fiber cloth surface modification: dissolving di-tert-butoxydiacetoxysilane in ethanol to prepare an ethanol solution with the mass percentage of 6%, and soaking the aramid fiber cloth in the ethanol solution for surface modification treatment for 5h to obtain the surface-modified aramid fiber cloth;
s3 coating treatment: and (3) coating one side of the fluororubber mucilage obtained in the step (S1) on the aramid fiber cloth with the modified surface obtained in the step (S2) to obtain the aramid fiber cloth treated by the fluororubber mucilage.
Preferably, the specific treatment method of the aramid fiber yarn treated by the fluororubber mucilage comprises the following steps:
preparation of S1 fluororubber mucilage: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill with a roll spacing of 0.5mm, and performing plastication by thinly passing the mixture for 10 times; adding the plasticated fluororubber into an open mill, mixing at 60 ℃, sequentially adding 3 parts of graphene oxide, 20 parts of spray carbon black, 8 parts of N-isopropyl maleimide and 20 parts of ethyl carbamate during mixing, and mixing for 30 min; adding the mixed fluororubber and 8 parts of toluene into a rubber cement machine, and uniformly dispersing in an ultrasonic-assisted stirring manner to obtain fluororubber rubber cement;
s2 aramid fiber yarn surface modification: dipping an aramid fiber wire in a salicylic acid solution taking graphene oxide as a solute, wherein the mass percent of the graphene oxide is 5%, the dipping time is 30min, and meanwhile, ultraviolet rays with irradiation energy of 4J/cm2 are adopted for irradiation, and the irradiation time is 15min, so that the surface-modified aramid fiber wire is obtained;
s3 treatment of fluororubber mucilage: and (3) dipping the surface-modified aramid fiber yarn obtained in the step (S2) in the fluororubber mucilage obtained in the step (S1) for 60min to obtain the aramid fiber yarn treated by the fluororubber mucilage.
Preferably, the preparation method of the fluororubber processing cushion gum comprises the following steps: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill, and performing plastication for 6 times; adding the plasticated fluororubber into an open mill, mixing at 60 ℃, sequentially adding 12 parts of maleic anhydride polyethylene, 5 parts of dibutyl phthalate or dioctyl phthalate, 8 parts of talcum powder or aluminum powder, 12 parts of N-isopropyl maleimide, 8 parts of ethyl acetate and 20 parts of spray carbon black in the mixing process, and mixing for 30 min; and thinly passing the mixed buffer rubber for 6 times through an open mill with the roller spacing of 0.5mm to obtain a first buffer rubber 2, and thinly passing the mixed buffer rubber for 6 times through an open mill with the roller spacing of 1mm to obtain a second buffer rubber 4.
Preferably, the fluororubber is the fluororubber 26.
Example 3
The ultra-high temperature resistant planar belt of the embodiment is basically the same as that of embodiment 1, and mainly has the difference that an included angle formed by the first aramid fiber line 301 and the second aramid fiber line 302 is 45 degrees, and an included angle formed by the first aramid fiber line 301 and the third aramid fiber line 303 is 135 degrees.
The hot vulcanization lapping operation comprises the following steps: first vulcanizing at 165 ℃ and 10MPa for 15min, then gradually heating to 230 ℃ for second vulcanizing for 24 h.
The specific treatment method of the aramid fiber cloth 1 treated by the fluororubber mucilage comprises the following steps:
preparation of S1 fluororubber mucilage: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill with a roll spacing of 0.4mm, and plasticating for 9 times; adding the plasticated fluororubber into an open mill, mixing at 50 ℃, sequentially adding 2 parts of graphene oxide, 15 parts of spray carbon black, 7 parts of N-isopropyl maleimide and 15 parts of ethyl carbamate during mixing, and mixing for 20 min; adding the mixed fluororubber and 7 parts of toluene into a paste machine, and uniformly dispersing in an ultrasonic-assisted stirring manner to obtain fluororubber paste;
s2 aramid fiber cloth surface modification: dissolving di-tert-butoxydiacetoxysilane in ethanol to prepare an ethanol solution with the mass percentage of 4%, and soaking the aramid fiber cloth in the ethanol solution for surface modification treatment for 3h to obtain the surface-modified aramid fiber cloth.
Example 4
The ultra-high temperature resistant planar belt of the embodiment is basically the same as that of the embodiment 2, and the main difference is that the aramid fiber yarn treated by the fluororubber mucilage comprises the following specific treatment methods:
s2 aramid fiber yarn surface modification: soaking aramid fiber yarns in salicylic acid solution with graphene oxide as solute, wherein the mass percent of the graphene oxide is 4%, the soaking time is 25min, and meanwhile, the irradiation energy is 3J/cm2Irradiating the surface-modified aramid fiber yarn for 10min to obtain the surface-modified aramid fiber yarn;
s3 treatment of fluororubber mucilage: and (3) dipping the surface-modified aramid fiber yarn obtained in the step (S2) in the fluororubber mucilage obtained in the step (S1) for 50min to obtain the aramid fiber yarn treated by the fluororubber mucilage.
Example 5
The ultra-high temperature resistant planar belt of the embodiment is basically the same as that of the embodiment 2, and the main difference is that the preparation method of the fluororubber processing cushion rubber comprises the following steps: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill, and performing plastication for 4 times; adding the plasticated fluororubber into an open mill, mixing at 40 ℃, sequentially adding 10 parts of maleic anhydride polyethylene, 4 parts of dibutyl phthalate or dioctyl phthalate, 6 parts of talcum powder or aluminum powder, 8 parts of N-isopropyl maleimide, 6 parts of ethyl acetate and 15 parts of spray carbon black in the mixing process, mixing for 18min, thinly passing the mixed cushion rubber in the open mill with the roll spacing of 0.3mm for 5 times to obtain a first cushion rubber 2, and thinly passing the mixed cushion rubber in the open mill with the roll spacing of 0.7mm for 5 times to obtain a second cushion rubber 4.
The performance test results of the ultra-high temperature resistant planar zones obtained in the embodiments 1 to 5 are shown in table 1, wherein the Shore A hardness is determined according to GB/T531-92; tensile strength and elongation at break were measured in accordance with GB/T528-1998 at a tensile rate of 100 mm/min.
TABLE 1
| Tensile strength, MPa | Elongation at break,% | Shore A hardness, DEG C | Normal use temperature, DEG C | |
| Example 1 | 56 | 860 | 95 | 220 |
| Example 2 | 58 | 910 | 97 | 210 |
| Example 3 | 51 | 890 | 94 | 220 |
| Example 4 | 53 | 900 | 92 | 215 |
| Example 5 | 55 | 880 | 93 | 220 |
| Conventional flat belt | 32～42 | 650～760 | 85～90 | ≤150 |
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 (8)
1. The ultra-high temperature resistant plane belt comprises a bottom surface, a middle enhancement layer and a main body covering layer, and is characterized by further comprising a first buffer rubber (2) and a second buffer rubber (4) which are processed by fluororubber, wherein the bottom surface is aramid fiber cloth (1) processed by fluororubber mucilage, the middle enhancement layer is an aramid fiber line layer (3) formed by aramid fiber lines processed by the fluororubber mucilage, and the main body covering layer (5) is fluororubber;
the single face coating first cushion gum (2) on aramid fiber cloth (1), twine aramid fiber line form aramid fiber line layer (3) on first cushion gum (2), immediately be in coat one deck second cushion gum (4) on aramid fiber line layer (3), at last coat on second cushion gum (4) main part overburden (5) obtains the plane area skeleton, will place after the plane area skeleton is cut edge in the hot vulcanization machine and carry out the hot vulcanization overlap joint operation, and the vulcanization finishes the cooling and stews and obtains super high temperature resistant plane area.
2. The ultra-high temperature resistant planar belt according to claim 1, wherein the aramid fiber thread layer is formed by weaving a first aramid fiber thread (301), a second aramid fiber thread (302) and a third aramid fiber thread (303) in a three-dimensional winding manner according to a certain angle.
3. The ultra-high temperature resistant planar belt according to claim 2, wherein an included angle formed by the first aramid fiber line (301) and the second aramid fiber line (302) is in a range of 30-60 degrees, and an included angle formed by the first aramid fiber line (301) and the third aramid fiber line (303) is in a range of 120-150 degrees.
4. The ultra-high temperature resistant planar belt of claim 1, wherein said heat-cure lapping operation comprises the steps of: first vulcanizing at 165-170 ℃ and 8-12 MPa for 10-20 min, and then gradually heating to 220-240 ℃ for second vulcanizing for 24 h.
5. The ultra-high temperature resistant planar belt according to claim 1, wherein the specific treatment method of the aramid fiber cloth treated by the fluororubber mucilage comprises the following steps:
preparation of S1 fluororubber mucilage: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill with a roll gap of 0.3-0.5 mm, and plasticating for 8-10 times; adding the plasticated fluororubber into an open mill, mixing at 40-60 ℃, sequentially adding 2-3 parts of graphene oxide, 10-20 parts of spray carbon black, 5-8 parts of N-isopropyl maleimide and 10-20 parts of ethyl carbamate during mixing, and mixing for 15-30 min; adding the mixed fluororubber and 5-8 parts of toluene into a rubber cement machine, and uniformly dispersing in an ultrasonic-assisted stirring manner to obtain fluororubber rubber cement;
s2 aramid fiber cloth surface modification: dissolving di-tert-butoxydiacetoxysilane in ethanol to prepare an ethanol solution with the mass percentage of 2-6%, and soaking the aramid fiber cloth in the ethanol solution for surface modification for 2-5 h to obtain the surface-modified aramid fiber cloth;
s3 coating treatment: and (3) coating one side of the fluororubber mucilage obtained in the step (S1) on the aramid fiber cloth with the modified surface obtained in the step (S2) to obtain the aramid fiber cloth treated by the fluororubber mucilage.
6. The ultra-high temperature resistant planar belt according to claim 1, wherein the specific treatment method of the aramid fiber yarn treated by the fluororubber mucilage comprises the following steps:
preparation of S1 fluororubber mucilage: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill with a roll gap of 0.3-0.5 mm, and plasticating for 8-10 times; adding the plasticated fluororubber into an open mill, mixing at 40-60 ℃, sequentially adding 2-3 parts of graphene oxide, 10-20 parts of spray carbon black, 5-8 parts of N-isopropyl maleimide and 10-20 parts of ethyl carbamate during mixing, and mixing for 15-30 min; adding the mixed fluororubber and 5-8 parts of toluene into a rubber cement machine, and uniformly dispersing in an ultrasonic-assisted stirring manner to obtain fluororubber rubber cement;
s2 aramid fiber yarn surface modification: soaking aramid fiber yarns in salicylic acid solution with graphene oxide as solute, wherein the mass percent of the graphene oxide is 2-5%, the soaking time is 20-30 min, and meanwhile, the irradiation energy is 2-4J/cm2Irradiating the surface-modified aramid fiber yarn for 5-15 min by using the ultraviolet rays to obtain the surface-modified aramid fiber yarn;
s3 treatment of fluororubber mucilage: and (3) dipping the surface-modified aramid fiber yarn obtained in the step (S2) in the fluororubber mucilage obtained in the step (S1) for 30-60 min to obtain the aramid fiber yarn treated by the fluororubber mucilage.
7. The ultra-high temperature resistant planar belt according to claim 1, wherein the preparation method of the first buffer rubber (2) and the second buffer rubber (4) processed by the fluororubber comprises the following steps: weighing 100 parts by weight of fluororubber, adding the fluororubber into an open mill, and performing plastication for 4-6 times; adding the plasticated fluororubber into an open mill, mixing at 40-60 ℃, sequentially adding 8-12 parts of maleic anhydride polyethylene, 3-5 parts of dibutyl phthalate or dioctyl phthalate, 5-8 parts of talcum powder or aluminum powder, 8-12 parts of N-isopropyl maleimide, 6-8 parts of ethyl acetate and 10-20 parts of spray carbon black in the mixing process, and mixing for 15-30 min; and (3) thinly passing the mixed buffer rubber for 4-6 times through an open mill with the roll spacing of 0.1-0.5 mm to obtain a first buffer rubber (2), and thinly passing the mixed buffer rubber for 4-6 times through the open mill with the roll spacing of 0.3-1 mm to obtain a second buffer rubber (4).
8. The ultra high temperature resistant planar belt according to any one of claims 1 to 7, wherein said fluororubber is fluorosilicone rubber or fluororubber 26.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20230391989A1 (en) * | 2022-06-06 | 2023-12-07 | Akron Polymer Solutions, Inc. | Conveyor belt cover compound |
| US12031027B2 (en) * | 2023-06-06 | 2024-07-09 | Akron Polymer Solutions, Inc. | Conveyor belt cover compound |
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| CN113400697A (en) * | 2021-05-14 | 2021-09-17 | 东莞市东佶新材料制带科技有限公司 | Method for preparing PCB (printed Circuit Board) conveying flat belt of SMT (surface mount technology) production line |
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| CN201010302Y (en) * | 2007-02-28 | 2008-01-23 | 李战杰 | Heat and bake resisting conveying belt |
| DE102007061735A1 (en) * | 2007-12-20 | 2009-07-23 | Audi Ag | Toothed belt for synchronous belt drive placed in the interior of crank case of internal combustion engine of motor vehicle, has tooth side, rear side opposite to tooth side, elastomer material, tensile strand, fabric layers, and coating |
| JP6132552B2 (en) * | 2010-08-25 | 2017-05-24 | ダイキン工業株式会社 | Belt material |
| JP2012096886A (en) * | 2010-11-01 | 2012-05-24 | Nitta Corp | Conveying belt |
| CN203906660U (en) * | 2014-06-17 | 2014-10-29 | 浙江三星胶带有限公司 | Aramid fiber rubber belt |
| CN104495215B (en) * | 2014-10-21 | 2016-10-05 | 北京化工大学 | High-temperature-resistant rubber conveying belt and preparation method thereof |
| CN104696437B (en) * | 2015-03-18 | 2017-01-04 | 宁波伏龙同步带有限公司 | A kind of high temperature resistant Timing Belt and preparation method thereof |
| CN107629329A (en) * | 2016-07-18 | 2018-01-26 | 青岛环球输送带有限公司 | High temperature resistant tear-proof conveyer belt |
| CN206616182U (en) * | 2017-03-16 | 2017-11-07 | 东莞市牛牌粘胶科技有限公司 | A kind of red U.S. adhesive tape of high temperature |
| CN108102258A (en) * | 2017-11-17 | 2018-06-01 | 青岛华武橡塑有限公司 | A kind of aircraft landing runway with heat resistant and wear resistant |
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| US20230391989A1 (en) * | 2022-06-06 | 2023-12-07 | Akron Polymer Solutions, Inc. | Conveyor belt cover compound |
| US12031027B2 (en) * | 2023-06-06 | 2024-07-09 | Akron Polymer Solutions, Inc. | Conveyor belt cover compound |
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Application publication date: 20190201 Assignee: Zhejiang Huilong transmission belt Co.,Ltd. Assignor: NINGBO FULONG SYNCHRONOUS BELT Co.,Ltd. Contract record no.: X2021330000112 Denomination of invention: An ultra high temperature resistant flat belt Granted publication date: 20200505 License type: Exclusive License Record date: 20210820 |