CN117489753A - Toothed synchronous belt - Google Patents
Toothed synchronous belt Download PDFInfo
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- CN117489753A CN117489753A CN202311318336.8A CN202311318336A CN117489753A CN 117489753 A CN117489753 A CN 117489753A CN 202311318336 A CN202311318336 A CN 202311318336A CN 117489753 A CN117489753 A CN 117489753A
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- synchronous belt
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- toothed
- tooth
- belt
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 115
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 34
- 229920001971 elastomer Polymers 0.000 claims abstract description 32
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 29
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims abstract description 27
- 239000000806 elastomer Substances 0.000 claims abstract description 27
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims abstract description 27
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 25
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 25
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- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 20
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000010881 fly ash Substances 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 17
- QUZJFTXRXJQLBH-UHFFFAOYSA-N 1,4-diamino-9,10-dioxoanthracene-2,3-dicarbonitrile Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C(N)=C(C#N)C(C#N)=C2N QUZJFTXRXJQLBH-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229920000137 polyphosphoric acid Polymers 0.000 claims abstract description 10
- JCUYNPHEESTECG-UHFFFAOYSA-N 3-amino-6-(4-aminophenyl)benzene-1,2-disulfonic acid Chemical compound C1=CC(N)=CC=C1C1=CC=C(N)C(S(O)(=O)=O)=C1S(O)(=O)=O JCUYNPHEESTECG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 9
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 9
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000008117 stearic acid Substances 0.000 claims abstract description 9
- 238000004073 vulcanization Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 7
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 7
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 7
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 7
- 239000006229 carbon black Substances 0.000 claims description 7
- 238000000748 compression moulding Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 229910000514 dolomite Inorganic materials 0.000 claims description 4
- 239000010459 dolomite Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
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- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 125000000542 sulfonic acid group Chemical group 0.000 description 2
- ZYUCFJDTQJNXJI-UHFFFAOYSA-N 1-(2,3-difluorophenyl)sulfonyl-2,3-difluorobenzene Chemical compound FC1=CC=CC(S(=O)(=O)C=2C(=C(F)C=CC=2)F)=C1F ZYUCFJDTQJNXJI-UHFFFAOYSA-N 0.000 description 1
- WRDNCFQZLUCIRH-UHFFFAOYSA-N 4-(7-azabicyclo[2.2.1]hepta-1,3,5-triene-7-carbonyl)benzamide Chemical compound C1=CC(C(=O)N)=CC=C1C(=O)N1C2=CC=C1C=C2 WRDNCFQZLUCIRH-UHFFFAOYSA-N 0.000 description 1
- HNRGOVGFMBHMNW-UHFFFAOYSA-N 9,10-dioxoanthracene-1-carbonitrile Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1C#N HNRGOVGFMBHMNW-UHFFFAOYSA-N 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
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- 239000004698 Polyethylene Substances 0.000 description 1
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- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
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- 238000011031 large-scale manufacturing process Methods 0.000 description 1
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- 238000011056 performance test Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
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- 239000004945 silicone rubber Substances 0.000 description 1
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- 239000004753 textile Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/28—Driving-belts with a contact surface of special shape, e.g. toothed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/0288—Controlling heating or curing of polymers during moulding, e.g. by measuring temperatures or properties of the polymer and regulating the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
- B29D29/08—Toothed driving belts
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/06—Driving-belts made of rubber
- F16G1/08—Driving-belts made of rubber with reinforcement bonded by the rubber
- F16G1/10—Driving-belts made of rubber with reinforcement bonded by the rubber with textile reinforcement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a toothed synchronous belt, which comprises a belt body, wherein at least one surface of the belt body is a toothed surface, and belt teeth which are transverse to the transmission direction and meshed with tooth grooves of a wheel are arranged on the toothed surface; the belt body comprises a framework and a synchronous belt film wrapped outside the framework; the film is prepared from the following raw materials: the thermoplastic polyurethane elastomer comprises fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings, phosphorus pentoxide, polyphosphoric acid, a silane coupling agent, fly ash fibers, inorganic filler, benzidine disulfonic acid, 1, 4-diamino-2, 3-dicyanoanthraquinone, 3 '-disulfonic acid group-4, 4' -difluorophenyl sulfone disodium salt, styrene-butadiene rubber, stearic acid, an anti-aging agent and a vulcanizing agent. The tooth-shaped synchronous belt has the advantages of good wear resistance, good mechanical property, good heat aging resistance and cold resistance and long service life.
Description
Technical Field
The invention relates to the technical field of synchronous belt transmission and conveying, in particular to a toothed synchronous belt.
Background
The synchronous belt is a novel conveyor belt developed by combining the advantages of belt transmission, chain transmission and gear transmission. Because the transmission mode of the synchronous belt is realized by meshing the gears with the tooth grooves of the belt wheels of the synchronous belt, asynchronous transmission can not be realized between the belt and the belt wheels due to slip in the transmission process, and the synchronous belt has the advantages of high transmission efficiency, accurate transmission ratio, large transmission ratio range, stable transmission, small acting force on a shaft, small noise, energy saving and the like, and is widely applied to mechanical transmission of various industries such as machine tools, textile, light industry, tobacco, petroleum, communication cables, chemical industry, mines, metallurgy, automobiles, food, instrument and the like.
Toothed synchronous belts are a common type of synchronous belt, which is common in automotive power systems. The prior tooth-shaped synchronous belt generally comprises an annular synchronous belt body, wherein the inner periphery of the synchronous belt body is provided with belt teeth which are transverse to the transmission direction and meshed with tooth grooves of a wheel, and the synchronous belt body is provided with a reinforcing layer of a steel wire rope or glass fiber and polyurethane or chloroprene rubber coated outside the reinforcing layer; the toothed synchronous belt is in a continuously stressed movement process, and is subjected to high heat in the movement process, so that the synchronous belt is easy to wear and peel teeth, and the problem of short service life of the toothed synchronous belt is caused. In addition, other tooth-shaped synchronous belts on the market have more or less technical defects of insufficient mechanical properties, heat aging resistance, cold resistance and the like.
In order to solve the problems, the Chinese patent No. ZL201510052826.7 discloses an automobile toothed synchronous belt, which relates to the technical field of automobile accessories and comprises an annular synchronous belt body, wherein the inner periphery of the synchronous belt body is provided with belt teeth which are transverse to the transmission direction and meshed with tooth grooves of wheels, the synchronous belt body is provided with a reinforcing layer and a rubber layer coated outside the reinforcing layer, and the belt teeth and the reinforcing layer are made of poly-p-phenylene terephthalamide materials; the rubber layer is prepared from the following raw materials in parts by weight: 70 parts of ethylene propylene rubber; 25 parts of silicone rubber; 4 parts of calcium carbonate; 10 parts of high wear-resistant carbon black; 10 parts of spray carbon black; 5.5 parts of dithiocarbamate; 2.3 parts of polyethylene wax; 8 parts of paraffin; 7.3 parts of vulcanized resin. The invention solves the problems of poor wear resistance and short service life of the existing automobile tooth-shaped synchronous belt, but the mechanical property, the thermal aging resistance and the cold resistance of the existing automobile tooth-shaped synchronous belt still need to be further improved.
Therefore, the tooth-shaped synchronous belt with good wear resistance, mechanical property, thermal aging resistance and cold resistance and long service life is developed, meets the market demand, has wide market value and application prospect, and has very important significance for promoting the development of the synchronous belt field.
Disclosure of Invention
The invention mainly aims to provide the tooth-shaped synchronous belt which has good wear resistance, mechanical property, thermal aging resistance and cold resistance and long service life.
In order to achieve the above purpose, the invention provides a toothed synchronous belt, which comprises a belt body, wherein at least one surface of the belt body is a toothed surface, and the toothed surface is provided with belt teeth which are transverse to the transmission direction and meshed with tooth grooves of a wheel; the belt body comprises a framework and a synchronous belt film wrapped outside the framework; the film is prepared from the following raw materials in parts by weight: 60-70 parts of fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings, 2-4 parts of phosphorus pentoxide, 0.8-1.5 parts of polyphosphoric acid, 3-5 parts of silane coupling agent, 3-5 parts of fly ash fiber, 10-20 parts of inorganic filler, 4-6 parts of benzidine disulfonic acid, 1-3 parts of 1, 4-diamino-2, 3-dicyanoanthraquinone, 1-2 parts of 3,3 '-disulfonic acid-4, 4' -difluorophenyl sulfone disodium salt, 10-20 parts of styrene-butadiene rubber, 1-3 parts of stearic acid, 1-3 parts of anti-aging agent and 1-2 parts of vulcanizing agent.
Preferably, the framework is made of high-modulus low-shrinkage polyester ropes or aramid ropes.
Preferably, the thickness of the framework is 3-5mm, and the thickness of the synchronous belt film is 5-10mm.
Preferably, the vulcanizing agent is a mixture formed by mixing benzoyl peroxide, di-tert-butyl peroxide and dicumyl peroxide according to the mass ratio of 1 (1-2) (0.8-1.2).
Preferably, the source of the fluorosilicone type benzene ring-containing thermoplastic polyurethane elastomer is not particularly limited, and in one embodiment of the present invention, the fluorosilicone type benzene ring-containing thermoplastic polyurethane elastomer is prepared according to the method of example 6 in chinese patent No. CN 111154064B.
Preferably, the silane coupling agent is at least one of silane coupling agent KH550, silane coupling agent KH560 and silane coupling agent KH 570.
Preferably, the average diameter of the fly ash fiber is 5-10 μm, and the length-diameter ratio (20-30): 1.
Preferably, the inorganic filler is at least one of white carbon black, light calcium carbonate and dolomite powder.
Preferably, the particle size of the inorganic filler is 800-1200 mesh.
Preferably, the styrene-butadiene rubber is styrene-butadiene rubber 1502.
Preferably, the anti-aging agent is at least one of anti-aging agent NBC and anti-aging agent BLE.
Another object of the present invention is to provide a method for preparing the toothed synchronous belt, comprising the steps of:
s1, putting a fluorosilicone type benzene ring-containing thermoplastic polyurethane elastomer and styrene-butadiene rubber into an open mill for mixing, alternately adding other raw materials, and uniformly mixing to obtain a synchronous belt film;
and S2, wrapping and attaching the synchronous belt film on a synchronous belt framework, then placing the synchronous belt film in a tooth-shaped synchronous belt die for compression molding and vulcanization, and cooling to room temperature to obtain the tooth-shaped synchronous belt.
Preferably, the vulcanization temperature in the step S2 is 170-190 ℃, the vulcanization pressure is 8-12MPa, and the vulcanization time is 30-40min.
Due to the application of the technical scheme, the invention has the following beneficial effects:
the preparation method of the tooth-shaped synchronous belt disclosed by the invention has the advantages of simple process, convenience in operation control, high preparation efficiency and finished product qualification rate, small equipment dependence, suitability for continuous large-scale production and higher popularization and application values.
The invention discloses a tooth-shaped synchronous belt, which is prepared from the following raw materials in parts by weight: 60-70 parts of fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings, 2-4 parts of phosphorus pentoxide, 0.8-1.5 parts of polyphosphoric acid, 3-5 parts of silane coupling agent, 3-5 parts of fly ash fiber, 10-20 parts of inorganic filler, 4-6 parts of benzidine disulfonic acid, 1-3 parts of 1, 4-diamino-2, 3-dicyanoanthraquinone, 1-2 parts of 3,3 '-disulfonic acid-4, 4' -difluorophenyl sulfone disodium salt, 10-20 parts of styrene-butadiene rubber, 1-3 parts of stearic acid, 1-3 parts of anti-aging agent and 1-2 parts of vulcanizing agent. Through the mutual matching and combined action of the raw materials, the manufactured synchronous belt has good wear resistance, mechanical property, thermal aging resistance and cold resistance and long service life. The fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings and the styrene-butadiene rubber are adopted to blend as the base material, and the advantages of the fluorosilicone type thermoplastic polyurethane elastomer and the styrene-butadiene rubber are combined, so that the manufactured synchronous belt is excellent in wear resistance, mechanical property, heat aging resistance and cold resistance. The benzene rings on the fluorosilicone type thermoplastic polyurethane elastomer and the styrene-butadiene rubber can react chemically with the sulfonic acid groups on the raw materials with sulfonic acid groups under the catalysis of polyphosphoric acid and phosphorus pentoxide, and form an interpenetrating network structure in the molecular structure of the rubber sheet by matching with a vulcanizing agent, so that the performance of the rubber sheet is effectively improved, and the service life of the rubber sheet is prolonged.
According to the tooth-shaped synchronous belt disclosed by the invention, through reasonable selection of a raw material formula, a fluorosilicone structure, polyurethane, biphenyl, cyano anthraquinone, difluorophenyl sulfone and a styrene-butadiene rubber structure are simultaneously introduced into a film molecular structure, and under the multiple effects of an electronic effect, a steric effect and a conjugation effect, the manufactured synchronous belt is better in wear resistance, mechanical property, thermal aging resistance and cold resistance, and longer in service life. The addition of the fly ash fiber not only can improve the mechanical property, but also belongs to the recycling of the solid waste fly ash, is beneficial to environmental protection, saves resources and can reduce the cost.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
Example 1
A tooth-shaped synchronous belt comprises a belt body, wherein at least one surface of the belt body is a tooth-shaped surface, and belt teeth which are transverse to the transmission direction and meshed with tooth grooves of a wheel are arranged on the tooth-shaped surface; the belt body comprises a framework and a synchronous belt film wrapped outside the framework; the film is prepared from the following raw materials in parts by weight: 60 parts of fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings, 2 parts of phosphorus pentoxide, 0.8 part of polyphosphoric acid, 3 parts of silane coupling agent, 3 parts of fly ash fiber, 10 parts of inorganic filler, 4 parts of benzidine disulfonic acid, 1 part of 1, 4-diamino-2, 3-dicyanoanthraquinone, 1 part of 3,3 '-disulfonic acid-4, 4' -difluorophenyl sulfone disodium salt, 10 parts of styrene-butadiene rubber, 1 part of stearic acid, 1 part of anti-aging agent and 1 part of vulcanizing agent.
The framework is made of high-modulus low-shrinkage polyester ropes; the thickness of skeleton is 4mm, the thickness of hold-in range film is 8mm.
The vulcanizing agent is a mixture formed by mixing benzoyl peroxide, di-tert-butyl peroxide and dicumyl peroxide according to a mass ratio of 1:1:1.2; the fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings is prepared according to the method of example 6 in Chinese patent No. 111154064B.
The silane coupling agent is a silane coupling agent KH550; the average diameter of the fly ash fiber is 5 mu m, and the length-diameter ratio is 20:1; the inorganic filler is white carbon black; the particle size of the inorganic filler is 800 meshes; the styrene-butadiene rubber is styrene-butadiene rubber 1502; the anti-aging agent is anti-aging agent NBC.
The preparation method of the tooth-shaped synchronous belt comprises the following steps:
s1, putting a fluorosilicone type benzene ring-containing thermoplastic polyurethane elastomer and styrene-butadiene rubber into an open mill for mixing, alternately adding other raw materials, and uniformly mixing to obtain a synchronous belt film;
and S2, wrapping and attaching the synchronous belt film on a synchronous belt framework, then placing the synchronous belt film in a tooth-shaped synchronous belt die for compression molding and vulcanization, and cooling to room temperature to obtain the tooth-shaped synchronous belt.
The vulcanization temperature in the step S2 is 170 ℃, the vulcanization pressure is 8MPa, and the vulcanization time is 30min.
Example 2
A tooth-shaped synchronous belt comprises a belt body, wherein at least one surface of the belt body is a tooth-shaped surface, and belt teeth which are transverse to the transmission direction and meshed with tooth grooves of a wheel are arranged on the tooth-shaped surface; the belt body comprises a framework and a synchronous belt film wrapped outside the framework; the film is prepared from the following raw materials in parts by weight: 63 parts of fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings, 2.5 parts of phosphorus pentoxide, 1 part of polyphosphoric acid, 3.5 parts of silane coupling agent, 3.5 parts of fly ash fiber, 12 parts of inorganic filler, 4.5 parts of benzidine disulfonic acid, 1.5 parts of 1, 4-diamino-2, 3-dicyanoanthraquinone, 1.2 parts of 3,3 '-disulfonic acid-4, 4' -difluorophenyl sulfone disodium salt, 12 parts of styrene-butadiene rubber, 1.5 parts of stearic acid, 1.5 parts of antioxidant and 1.2 parts of vulcanizing agent.
The framework is made of high-modulus low-shrinkage aramid fiber ropes; the thickness of the framework is 4mm, and the thickness of the synchronous belt film is 8mm; the vulcanizing agent is a mixture formed by mixing benzoyl peroxide, di-tert-butyl peroxide and dicumyl peroxide according to the mass ratio of 1:1.2:0.9; the fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings is prepared according to the method of example 6 in Chinese patent No. 111154064B.
The silane coupling agent is a silane coupling agent KH560; the average diameter of the fly ash fiber is 7 mu m, and the length-diameter ratio is 23:1; the inorganic filler is light calcium carbonate; the particle size of the inorganic filler is 900 meshes; the styrene-butadiene rubber is styrene-butadiene rubber 1502; the anti-aging agent is anti-aging agent BLE.
The preparation method of the tooth-shaped synchronous belt comprises the following steps:
s1, putting a fluorosilicone type benzene ring-containing thermoplastic polyurethane elastomer and styrene-butadiene rubber into an open mill for mixing, alternately adding other raw materials, and uniformly mixing to obtain a synchronous belt film;
and S2, wrapping and attaching the synchronous belt film on a synchronous belt framework, then placing the synchronous belt film in a tooth-shaped synchronous belt die for compression molding and vulcanization, and cooling to room temperature to obtain the tooth-shaped synchronous belt.
The vulcanizing temperature in the step S2 is 175 ℃, the vulcanizing pressure is 9MPa, and the vulcanizing time is 33min.
Example 3
A tooth-shaped synchronous belt comprises a belt body, wherein at least one surface of the belt body is a tooth-shaped surface, and belt teeth which are transverse to the transmission direction and meshed with tooth grooves of a wheel are arranged on the tooth-shaped surface; the belt body comprises a framework and a synchronous belt film wrapped outside the framework; the film is prepared from the following raw materials in parts by weight: 65 parts of fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings, 3 parts of phosphorus pentoxide, 1.2 parts of polyphosphoric acid, 4 parts of a silane coupling agent, 4 parts of fly ash fibers, 15 parts of inorganic filler, 5 parts of benzidine disulfonic acid, 2 parts of 1, 4-diamino-2, 3-dicyanoanthraquinone, 1.5 parts of 3,3 '-disulfonic acid-4, 4' -difluorophenyl sulfone disodium salt, 15 parts of styrene butadiene rubber, 2 parts of stearic acid, 2 parts of an anti-aging agent and 1.5 parts of a vulcanizing agent.
The framework is made of high-modulus low-shrinkage polyester ropes; the thickness of the framework is 4mm, and the thickness of the synchronous belt film is 8mm; the vulcanizing agent is a mixture formed by mixing benzoyl peroxide, di-tert-butyl peroxide and dicumyl peroxide according to a mass ratio of 1:1.5:1; the fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings is prepared according to the method of example 6 in Chinese patent No. 111154064B.
The silane coupling agent is a silane coupling agent KH570; the average diameter of the fly ash fiber is 7.5 mu m, and the length-diameter ratio is 25:1; the inorganic filler is dolomite powder; the particle size of the inorganic filler is 1000 meshes; the styrene-butadiene rubber is styrene-butadiene rubber 1502; the anti-aging agent is anti-aging agent NBC.
The preparation method of the tooth-shaped synchronous belt comprises the following steps:
s1, putting a fluorosilicone type benzene ring-containing thermoplastic polyurethane elastomer and styrene-butadiene rubber into an open mill for mixing, alternately adding other raw materials, and uniformly mixing to obtain a synchronous belt film;
and S2, wrapping and attaching the synchronous belt film on a synchronous belt framework, then placing the synchronous belt film in a tooth-shaped synchronous belt die for compression molding and vulcanization, and cooling to room temperature to obtain the tooth-shaped synchronous belt.
The vulcanization temperature in the step S2 is 180 ℃, the vulcanization pressure is 10MPa, and the vulcanization time is 35min.
Example 4
A tooth-shaped synchronous belt comprises a belt body, wherein at least one surface of the belt body is a tooth-shaped surface, and belt teeth which are transverse to the transmission direction and meshed with tooth grooves of a wheel are arranged on the tooth-shaped surface; the belt body comprises a framework and a synchronous belt film wrapped outside the framework; the film is prepared from the following raw materials in parts by weight: 68 parts of fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings, 3.5 parts of phosphorus pentoxide, 1.3 parts of polyphosphoric acid, 4.5 parts of a silane coupling agent, 4.5 parts of fly ash fiber, 18 parts of inorganic filler, 5.5 parts of benzidine disulfonic acid, 2.5 parts of 1, 4-diamino-2, 3-dicyanoanthraquinone, 1.8 parts of 3,3 '-disulfonic acid-4, 4' -difluorophenyl sulfone disodium salt, 18 parts of styrene butadiene rubber, 2.5 parts of stearic acid, 2.5 parts of an anti-aging agent and 1.8 parts of a vulcanizing agent.
The framework is made of high-modulus low-shrinkage aramid fiber ropes; the thickness of the framework is 4mm, and the thickness of the synchronous belt film is 8mm; the vulcanizing agent is a mixture formed by mixing benzoyl peroxide, di-tert-butyl peroxide and dicumyl peroxide according to the mass ratio of 1:1.8:1.1; the fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings is prepared according to the method of example 6 in Chinese patent No. 111154064B.
The silane coupling agent is a mixture formed by mixing a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH570 according to a mass ratio of 1:2:3; the average diameter of the fly ash fiber is 9 mu m, and the length-diameter ratio is 28:1; the inorganic filler is a mixture formed by mixing white carbon black, light calcium carbonate and dolomite powder according to the mass ratio of 2:3:5; the particle size of the inorganic filler is 1100 meshes; the styrene-butadiene rubber is styrene-butadiene rubber 1502; the anti-aging agent is a mixture formed by mixing an anti-aging agent NBC and an anti-aging agent BLE according to a mass ratio of 3:5.
The preparation method of the tooth-shaped synchronous belt comprises the following steps:
s1, putting a fluorosilicone type benzene ring-containing thermoplastic polyurethane elastomer and styrene-butadiene rubber into an open mill for mixing, alternately adding other raw materials, and uniformly mixing to obtain a synchronous belt film;
and S2, wrapping and attaching the synchronous belt film on a synchronous belt framework, then placing the synchronous belt film in a tooth-shaped synchronous belt die for compression molding and vulcanization, and cooling to room temperature to obtain the tooth-shaped synchronous belt.
The vulcanizing temperature in the step S2 is 185 ℃, the vulcanizing pressure is 11MPa, and the vulcanizing time is 38min.
Example 5
A tooth-shaped synchronous belt comprises a belt body, wherein at least one surface of the belt body is a tooth-shaped surface, and belt teeth which are transverse to the transmission direction and meshed with tooth grooves of a wheel are arranged on the tooth-shaped surface; the belt body comprises a framework and a synchronous belt film wrapped outside the framework; the film is prepared from the following raw materials in parts by weight: 70 parts of fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings, 4 parts of phosphorus pentoxide, 1.5 parts of polyphosphoric acid, 5 parts of silane coupling agent, 5 parts of fly ash fiber, 20 parts of inorganic filler, 6 parts of benzidine disulfonic acid, 3 parts of 1, 4-diamino-2, 3-dicyanoanthraquinone, 2 parts of 3,3 '-disulfonic acid-4, 4' -difluorophenyl sulfone disodium salt, 20 parts of styrene-butadiene rubber, 3 parts of stearic acid, 3 parts of anti-aging agent and 2 parts of vulcanizing agent.
The framework is made of high-modulus low-shrinkage polyester ropes; the thickness of the framework is 4mm, and the thickness of the synchronous belt film is 8mm; the vulcanizing agent is a mixture formed by mixing benzoyl peroxide, di-tert-butyl peroxide and dicumyl peroxide according to a mass ratio of 1:2:1.2; the fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings is prepared according to the method of example 6 in Chinese patent No. 111154064B.
The silane coupling agent is a silane coupling agent KH550; the average diameter of the fly ash fiber is 10 mu m, and the length-diameter ratio is 30:1; the inorganic filler is white carbon black; the particle size of the inorganic filler is 1200 meshes; the styrene-butadiene rubber is styrene-butadiene rubber 1502; the anti-aging agent is anti-aging agent NBC.
The preparation method of the tooth-shaped synchronous belt comprises the following steps:
s1, putting a fluorosilicone type benzene ring-containing thermoplastic polyurethane elastomer and styrene-butadiene rubber into an open mill for mixing, alternately adding other raw materials, and uniformly mixing to obtain a synchronous belt film;
and S2, wrapping and attaching the synchronous belt film on a synchronous belt framework, then placing the synchronous belt film in a tooth-shaped synchronous belt die for compression molding and vulcanization, and cooling to room temperature to obtain the tooth-shaped synchronous belt.
And in the step S2, the vulcanization temperature is 190 ℃, the vulcanization pressure is 12MPa, and the vulcanization time is 40min.
Comparative example 1
A toothed synchronous belt was substantially the same as in example 1 except that 1, 4-diamino-2, 3-dicyanoanthraquinone was not added.
Comparative example 2
A toothed synchronous belt was substantially the same as in example 1 except that 3,3 '-disulfonate-4, 4' -difluorophenyl sulfone disodium salt was not added.
In order to further illustrate the beneficial technical effects of the toothed synchronous belt according to each embodiment of the present invention, the toothed synchronous belts according to embodiments 1 to 5 and comparative examples 1 to 2 were subjected to a correlation performance test, and the test results are shown in table 1, and the test method is as follows: tensile strength was measured according to GB/T528-2009, tensile rate 100mm/min; the ageing resistance is that each product is put in hot air of 85 ℃ to be aged for 150 hours in a manual acceleration way, then is cooled to normal temperature, the retention rate of tensile strength at the normal temperature is tested and calculated, and the larger the retention rate value is, the better the heat aging resistance is. The low temperature resistance is that after each product is placed at the temperature of minus 30 ℃ for 60 hours, the product is restored to normal temperature, the retention rate of tensile strength at normal temperature is tested and calculated, and the larger the retention rate value is, the better the cold resistance is. The abrasion of the Aclonals was determined according to GB/T1689-1998.
As can be seen from Table 1, the toothed synchronous belt disclosed in the example of the present invention has more excellent mechanical properties, heat aging resistance, cold resistance and wear resistance than the comparative example, and the addition of 1, 4-diamino-2, 3-dicyanoanthraquinone, 3 '-disulfonic acid group-4, 4' -difluorophenyl sulfone disodium salt is beneficial to improving the above properties.
The foregoing has shown and described the basic principles, principal 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, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The toothed synchronous belt is characterized by comprising a belt body, wherein at least one surface of the belt body is a toothed surface, and belt teeth which are transverse to the transmission direction and meshed with tooth grooves of a wheel are arranged on the toothed surface; the belt body comprises a framework and a synchronous belt film wrapped outside the framework; the film is prepared from the following raw materials in parts by weight: 60-70 parts of fluorosilicone type thermoplastic polyurethane elastomer containing benzene rings, 2-4 parts of phosphorus pentoxide, 0.8-1.5 parts of polyphosphoric acid, 3-5 parts of silane coupling agent, 3-5 parts of fly ash fiber, 10-20 parts of inorganic filler, 4-6 parts of benzidine disulfonic acid, 1-3 parts of 1, 4-diamino-2, 3-dicyanoanthraquinone, 1-2 parts of 3,3 '-disulfonic acid-4, 4' -difluorophenyl sulfone disodium salt, 10-20 parts of styrene-butadiene rubber, 1-3 parts of stearic acid, 1-3 parts of anti-aging agent and 1-2 parts of vulcanizing agent.
2. The toothed synchronous belt according to claim 1, wherein the skeleton is made of a high-modulus low-shrinkage polyester rope or an aramid rope.
3. The toothed timing belt of claim 1 wherein said carcass has a thickness of 3-5mm and said timing belt film has a thickness of 5-10mm.
4. The toothed synchronous belt according to claim 1, wherein the vulcanizing agent is a mixture formed by mixing benzoyl peroxide, di-tert-butyl peroxide and dicumyl peroxide according to a mass ratio of 1 (1-2) (0.8-1.2).
5. The toothed synchronous belt according to claim 1, characterized in that the silane coupling agent is at least one of a silane coupling agent KH550, a silane coupling agent KH560, a silane coupling agent KH 570.
6. Toothed synchronous belt according to claim 1, characterized in that the fly ash fibers have an average diameter of 5-10 μm and an aspect ratio (20-30): 1; the inorganic filler is at least one of white carbon black, light calcium carbonate and dolomite powder; the particle size of the inorganic filler is 800-1200 meshes.
7. The toothed synchronous belt according to claim 1, characterized in that the styrene-butadiene rubber is styrene-butadiene rubber 1502; the anti-aging agent is at least one of anti-aging agent NBC and anti-aging agent BLE.
8. A method of producing a toothed synchronous belt according to any one of claims 1 to 7, comprising the steps of:
s1, putting a fluorosilicone type benzene ring-containing thermoplastic polyurethane elastomer and styrene-butadiene rubber into an open mill for mixing, alternately adding other raw materials, and uniformly mixing to obtain a synchronous belt film;
and S2, wrapping and attaching the synchronous belt film on a synchronous belt framework, then placing the synchronous belt film in a tooth-shaped synchronous belt die for compression molding and vulcanization, and cooling to room temperature to obtain the tooth-shaped synchronous belt.
9. The method for producing a toothed synchronous belt according to claim 8, wherein the vulcanizing temperature in step S2 is 170 to 190 ℃, the vulcanizing pressure is 8 to 12MPa, and the vulcanizing time is 30 to 40 minutes.
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