CN202646533U - Automobile timing belt - Google Patents
Automobile timing belt Download PDFInfo
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- CN202646533U CN202646533U CN 201220171687 CN201220171687U CN202646533U CN 202646533 U CN202646533 U CN 202646533U CN 201220171687 CN201220171687 CN 201220171687 CN 201220171687 U CN201220171687 U CN 201220171687U CN 202646533 U CN202646533 U CN 202646533U
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Abstract
The utility model discloses an automobile timing belt used for an automobile engine and aims to overcome the defects that the operating temperature range of a traditional automobile timing belt is narrower, and the service life is shorter when the operating temperature range is exceeded. The automobile timing belt disclosed by the utility model comprises a back rubber layer, a framework layer, a toothed rubber layer and a toothed cloth layer, wherein the back rubber layer, the framework layer, the toothed rubber layer and the toothed cloth layer are arranged from outside to inside in sequence; the back rubber layer is mainly made of ethylene vinyl acetate rubber-modified hydrogenated acrylonitrile butadiene rubber; the framework layer consists of glass fiber cotton ropes of which the surfaces are treated; the toothed rubber layer is mainly made of the ethylene vinyl acetate rubber-modified hydrogenated acrylonitrile butadiene rubber; the base cloth of the toothed cloth layer is immersed in rubber cement which is mainly made of hydrogenated acrylonitrile butadiene rubber; the inner surface of the toothed rubber layer is provided with a plurality of toothed bulges; and the toothed cloth layer is coated on the inner surface of the toothed rubber layer. The automobile timing belt disclosed by the utility model can normally and efficiently work for a long term within a wider temperature range of -40 DEG C-130 DEG C, and is stable in performance and long in service life.
Description
Technical field
The utility model relates to mechanical transmission fields, particularly a kind of timing belt of automobile for motor car engine.
Background technique
Timing Belt is the important component part of engine air distribution system, by with bent axle be connected and cooperate certain transmission recently guarantee the inlet and outlet time accurately.The effect of Timing Belt is played and is formed a connecting link, and the top connection is that positive hour wheel, the bottom connection of engine cylinder cover is the crankshaft timing wheel.
Along with the space of motor car engine is more and more less, power is increasing, and service condition is increasingly harsh, and serviceability temperature is more and more higher, and motor requires more and more longer to the timing belt life.And traditional timing belt of automobile uses the normal serviceability temperature of Timing Belt of chloroprene rubber material at-30 ℃～100 ℃, and the life-span is about 50000km.Adopt the normal serviceability temperature of common hydrogenated nitrile-butadiene rubber Timing Belt at-40 ℃～120 ℃, the life-span is about 100000km.Above-mentioned Timing Belt exists the temperature range of using narrower, and the defective that working life is shorter surpasses the serviceability temperature scope and can significantly descend working life.
The model utility of notification number CN201843681U discloses a kind of timing belt anti-deviation structure of engine, it comprises the timing belt gear that Timing Belt connects, water pump shaft gear, Idle wheel, the intake cam shaftgear, the exhaust cam shaftgear has an angle that Timing Belt is made progress between the center line of water pump spindle and the horizontal line.Although this patent has improvement to the operation of Timing Belt, and the technological improvement of Timing Belt itself is provided enlightenment.
Summary of the invention
It is narrower that the purpose of this utility model is to overcome the temperature range that has the timing belt of automobile use now, the defective that working life is shorter, a kind of timing belt of automobile is provided, it is in wider temperature range-40 ℃～130 ℃ of normally effectively long-term works, and the life-span prolongs about 25% than common hydrogenated nitrile-butadiene rubber Timing Belt.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of timing belt of automobile, described timing belt of automobile comprises successively that from outside to inside the main gel kind is the framework layer that consists of of the gum layer of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber, surface treated fiberglass threads, the main gel kind is the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber tooth glue-line and base cloth are that the cement dip of hydrogenated nitrile-butadiene rubber is processed the tooth layer of cloth that forms through the main gel kind, the internal surface of tooth glue-line has some detent projection, and the tooth layer of cloth coats the internal surface of tooth glue-line.
Acting as of each layer of the utility model:
1, gum layer: the protection zone face, improve wear resistance and the scratch resistance thorn property at the belt back side;
2, framework layer: the longitudinal pulling force of carrying belt;
3, tooth glue-line: by with the meshing transferring power of belt wheel;
4, tooth layer of cloth: protection tooth glue-line, improve wear resistance and the scratch resistance thorn property of belt body tooth section.
It is main glue kind that the utility model adopts the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber, simultaneously framework layer is carried out special processing, has improved the Adhesion force of framework layer and gum layer and tooth glue-line, has improved the life-span of the present utility model; By the rational deployment to layer of structure, the modification of sizing material and the optimization of rubber compounding are so that the utility model can be in wider temperature range-40 ℃～130 ℃ of normally effectively long-term works, stable performance, long service life.
The main gel kind of life-15%8 tooth glue-lines and gum layer is that the material prescription of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber is as follows, each component is all by weight: 100.0 parts of the modified hydrogenated nitrile butadiene rubbers of ethylene-vinyl acetate rubber, zine oxide 5.0-6.0 part, stearic acid 1.0-2.0 part, age resister 1.0-3.0 part, carbon black 40.0-60.0 part, tenderer 5.0-10.0 part, strengthening agent 1.0-10.0 part, crosslinking agent 4.0-7.0 part, co-crosslinker 1.0-2.0 part.The concrete model of age resister is anti-aging agent RD, tackiness agent is adhesive RS+adhesive A, carbon black is selected carbon black N774 or carbon black N550, tenderer is plasticizing agent TP-95, strengthening agent is zinc acrylate resin, and vulcanzing agent is sulphur, and promoter is Vulcanization accelerator TMTD or DM, crosslinking agent is cumyl peroxide (DCP), and co-crosslinker is iso-cyanuric acid triallyl ester (TAIC).
The modified hydrogenated nitrile butadiene rubber of described ethylene-vinyl acetate rubber is prepared from by following methods: ethylene-vinyl acetate rubber, hydrogenated nitrile-butadiene rubber and crosslinking agent are dropped in the rubber mixing machine, until the glue furnacing temperature of rubber mixing machine reaches 180 ℃ ± 10 ℃, namely get the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber after the cooling, by weight, ethylene-vinyl acetate rubber is 10-45 part, hydrogenated nitrile-butadiene rubber is 55-90 part, crosslinking agent 0.2-0.8 part, the summation of therein ethylene-vinyl acetate rubber and hydrogenated nitrile-butadiene rubber is 100 parts.Crosslinking agent is DCP or two Chinese of 2,5, two 2,5 another name: 2,5-dimethyl-2, and 5-DI (tert-butyl peroxide) hexane, two two or five, 2,5-dimethyl-2, two (tert-butyl peroxide) hexanes of 5-, molecular formula: C
32H
66O
2With the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber, greatly improved resistance to high temperature of the present utility model, the increase of resistance to high temperature is larger on the impact of life-span of Timing Belt, along with resistance to high temperature increases, life-span that can the Effective Raise Timing Belt.
The main gel kind that is used for the base cloth immersion treatment of tooth layer of cloth is that the rubber cement prescription of hydrogenated nitrile-butadiene rubber is as follows, each component is all by weight: 100.0 parts of hydrogenated nitrile-butadiene rubbers, zine oxide 4.0-6.0 part, stearic acid 1.0-2.0 part, age resister 1.0-2.0 part, tackiness agent 4.0-7.0 part, carbon black 50.0-60.0 part, tenderer 6.0-8.0 part, vulcanzing agent 3.0-5.0 part, promoter 2.0-3.0 part, co-crosslinker 1.0-2.0 part.The concrete model of age resister is anti-aging agent RD, tackiness agent is adhesive RS+adhesive A, carbon black is selected carbon black N774 or carbon black N550, tenderer is plasticizing agent TP-95, strengthening agent is zinc acrylate resin, and vulcanzing agent is sulphur, and promoter is Vulcanization accelerator TMTD or DM, crosslinking agent is cumyl peroxide (DCP), and co-crosslinker is iso-cyanuric acid triallyl ester (TAIC).
The surface treatment of fiberglass threads is specially: fiberglass threads is processed with resorcinol-formaldehyde-Ding arsenic latex adhesive first, and then is coated with one deck Kai Muluoke adhesive, and 160 ℃ ± 5 ℃, baking 100-140s, the rubber absorption capacity of Kai Muluoke adhesive is 2%-6%.By the surface treatment to fiberglass threads, greatly improved the Adhesion force of framework layer and gum layer and tooth glue-line, thereby improved the life-span of the present utility model.Fiberglass threads is processed with resorcinol-formaldehyde-Ding arsenic latex adhesive and is specially: fiberglass threads is flooded through resorcinol-formaldehyde-Ding arsenic latex adhesive, then at 100 ℃ ± 5 ℃, baking 40-80s, the rubber absorption capacity of resorcinol-formaldehyde on the fiberglass threads-Ding arsenic latex adhesive is 7%-15%.The rubber absorption capacity of control resorcinol-formaldehyde-Ding arsenic latex adhesive and Kai Muluoke adhesive reaches best bonding strength like this.Rubber absorption capacity is namely enclosed the ratio of weight and the weight of fiberglass threads own of the latex adhesive on the fiberglass threads.
As preferably, the base cloth of described tooth layer of cloth is high elasticity nylon elastic cloth, and the continuous rating elongation rate of described high elasticity nylon elastic cloth is 80%～120%.The continuous rating elongation rate of high elasticity nylon elastic cloth is 80%～120%, so that the tooth layer of cloth has preferably tensile strength, has improved wear resistance.
As preferably, the density of arranging of fiberglass threads is 60-80 root/100mm.The intensity of Timing Belt of the present utility model like this is good.
As preferably, the thickness of described gum layer is 1.5-2.5mm.
As preferably, the thickness of described framework layer is 1.0-1.2mm.
As preferably, the thickness of described tooth glue-line is 2.0-3.5mm.
As preferably, the thickness of described tooth layer of cloth is 0.7-1.0mm.
Rationally control the thickness of each layer, so that the utility model reaches best performance.
The beneficial effects of the utility model are: adopting the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber is main glue kind, simultaneously framework layer is carried out special processing, has improved the Adhesion force of framework layer and gum layer and tooth glue-line; By the rational deployment to layer of structure, and the optimization of the modification of sizing material and rubber compounding, so that the utility model can be in wider temperature range-40 ℃～130 ℃ of normally effectively long-term works, stable performance, long service life.
Description of drawings
Fig. 1 is a kind of sectional structure schematic diagram of the present utility model;
Fig. 2 is the Fatigue Life Comparison figure of 130 ℃ of lower three kinds of different subjects material timing belt of automobiles of condition, and wherein to represent material of main part be neoprene to CR; It is hydrogenated nitrile-butadiene rubber that HNBR represents material of main part; EVM modification HNBR represents the utility model;
Fig. 3 is the Fatigue Life Comparison figure of-40 ℃ of lower three kinds of different subjects material timing belt of automobiles of condition, and wherein to represent material of main part be neoprene to CR; It is hydrogenated nitrile-butadiene rubber that HNBR represents material of main part; EVM modification HNBR represents the utility model;
Among the figure: 1, gum layer, 2, framework layer, 3, the tooth glue-line, 4, the tooth layer of cloth.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
The following various material components that use of the utility model are commercially available prod (make separately specified otherwise except).
Embodiment 1
A kind of timing belt of automobile as shown in Figure 1, described timing belt of automobile comprises successively that from outside to inside the main gel kind is the gum layer 1 of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber, surface treated fiberglass threads (Mitsui company, the glass cotton rope, specification ECG150-3/13-2.0SZ) framework layer 2 that consists of, the main gel kind is the tooth glue-line 3 of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber and base cloth through the main gel kind is that the cement dip of hydrogenated nitrile-butadiene rubber is processed the tooth layer of cloth 4 that forms, the internal surface of tooth glue-line 3 has some detent projection, and tooth layer of cloth 4 coats the internal surface of tooth glue-line 3.
The thickness of described gum layer is 1.5mm, and the thickness of described framework layer is 1.0mm, and the thickness of described tooth glue-line is 2.0mm, and the thickness of described tooth layer of cloth is 0.7mm.
The base cloth of described tooth layer of cloth is high elasticity nylon elastic cloth, and the continuous rating elongation rate of described high elasticity nylon elastic cloth is 80%; The base cloth immersion treatment is that base cloth is immersed in the rubber cement, takes out at once, enters baking oven under 100 ℃ ± 1 ℃ temperature, and baking 2-3min gets final product.
The surface treatment of fiberglass threads is specially: fiberglass threads is processed with resorcinol-formaldehyde-Ding arsenic latex adhesive first, and then is coated with one deck Kai Muluoke adhesive, and 165 ℃, baking 100s, the rubber absorption capacity of Kai Muluoke adhesive is 2%.Fiberglass threads is processed with resorcinol-formaldehyde-Ding arsenic latex adhesive and is specially: fiberglass threads is flooded through resorcinol-formaldehyde-Ding arsenic latex adhesive, then at 105 ℃, baking 40s, the rubber absorption capacity of resorcinol-formaldehyde on the fiberglass threads-Ding arsenic latex adhesive is 7%.The density of arranging of fiberglass threads is 60/100mm.
The main gel kind of tooth glue-line and gum layer is that the material prescription of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber is as follows, each component is all by weight: 100.0 parts of the modified hydrogenated nitrile butadiene rubbers of ethylene-vinyl acetate rubber, 5.0 parts in zine oxide, 1.0 parts of stearic acid, 1.0 parts in age resister, 40.0 parts of carbon blacks, 5.0 parts of tenderers, 1.0 parts of strengthening agents, 4.0 parts of crosslinking agents, 1.0 parts of co-crosslinkers.
The main gel kind that is used for the base cloth immersion treatment of tooth layer of cloth is that the rubber cement prescription of hydrogenated nitrile-butadiene rubber is as follows, each component is all by weight: 100.0 parts of hydrogenated nitrile-butadiene rubbers, 4.0 parts in zine oxide, 1.0 parts of stearic acid, 1.0 parts in age resister, 4.0 parts in tackiness agent, 50.0 parts of carbon blacks, 6.0 parts of tenderers, 3.0 parts of vulcanzing agents, 2.0 parts of promoter, 1.0 parts of co-crosslinkers.
In the above-mentioned prescription: the concrete model of age resister is anti-aging agent RD, tackiness agent is adhesive RS+adhesive A, weight ratio according to 1:1 is mixed, carbon black is selected carbon black N774, and tenderer is plasticizing agent TP-95, and strengthening agent is zinc acrylate resin, vulcanzing agent is sulphur, promoter is Vulcanization accelerator TMTD, and crosslinking agent is cumyl peroxide (DCP), and co-crosslinker is iso-cyanuric acid triallyl ester (TAIC).
The modified hydrogenated nitrile butadiene rubber of described ethylene-vinyl acetate rubber is prepared from by following methods: ethylene-vinyl acetate rubber, hydrogenated nitrile-butadiene rubber and crosslinking agent are dropped into (initial temperature of general rubber mixing machine is about 60 ℃) in the rubber mixing machine, until the glue furnacing temperature of rubber mixing machine reaches 190 ℃, namely get the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber after the cooling, by weight, ethylene-vinyl acetate rubber is 10 parts, hydrogenated nitrile-butadiene rubber is 90 parts, 0.2 part of crosslinking agent (DCP).
Embodiment 2
A kind of timing belt of automobile as shown in Figure 1, described timing belt of automobile comprises successively that from outside to inside the main gel kind is the gum layer 1 of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber, surface treated fiberglass threads (Mitsui company, the glass cotton rope, specification ECG150-3/13-2.0SZ) framework layer 2 that consists of, the main gel kind is the tooth glue-line 3 of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber and base cloth through the main gel kind is that the cement dip of hydrogenated nitrile-butadiene rubber is processed the tooth layer of cloth 4 that forms, the internal surface of tooth glue-line 3 has some detent projection, and tooth layer of cloth 4 coats the internal surface of tooth glue-line 3.
The thickness of described gum layer is 2.2mm, and the thickness of described framework layer is 1.2mm, and the thickness of described tooth glue-line is 3.0mm, and the thickness of described tooth layer of cloth is 0.75mm.
The base cloth of described tooth layer of cloth is high elasticity nylon elastic cloth, and the continuous rating elongation rate of described high elasticity nylon elastic cloth is 100%; The base cloth immersion treatment is that base cloth is immersed in the rubber cement, takes out at once, enters baking oven under 100 ℃ ± 1 ℃ temperature, and baking 2-3min gets final product.
The surface treatment of fiberglass threads is specially: fiberglass threads is processed with resorcinol-formaldehyde-Ding arsenic latex adhesive first, and then is coated with one deck Kai Muluoke adhesive, and 160 ℃, baking 120s, the rubber absorption capacity of Kai Muluoke adhesive is 4%.Fiberglass threads is processed with resorcinol-formaldehyde-Ding arsenic latex adhesive and is specially: fiberglass threads is flooded through resorcinol-formaldehyde-Ding arsenic latex adhesive, then at 100 ℃, baking 60s, the rubber absorption capacity of resorcinol-formaldehyde on the fiberglass threads-Ding arsenic latex adhesive is 10%.The density of arranging of fiberglass threads is 70/100mm.
The main gel kind of tooth glue-line and gum layer is that the material prescription of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber is as follows, each component is all by weight: 100.0 parts of the modified hydrogenated nitrile butadiene rubbers of ethylene-vinyl acetate rubber, 5.5 parts in zine oxide, 1.5 parts of stearic acid, 2.0 parts in age resister, 50.0 parts of carbon blacks, 8.0 parts of tenderers, 5.0 parts of strengthening agents, 6.0 parts of crosslinking agents, 1.5 parts of co-crosslinkers.
The main gel kind that is used for the base cloth immersion treatment of tooth layer of cloth is that the rubber cement prescription of hydrogenated nitrile-butadiene rubber is as follows, each component is all by weight: 100.0 parts of hydrogenated nitrile-butadiene rubbers, 5.0 parts in zine oxide, 1.5 parts of stearic acid, 1.5 parts in age resister, 6.0 parts in tackiness agent, 55.0 parts of carbon blacks, 7.0 parts of tenderers, 4.0 parts of vulcanzing agents, 2.5 parts of promoter, 1.5 parts of co-crosslinkers.
In the above-mentioned prescription: the concrete model of age resister is anti-aging agent RD, tackiness agent is adhesive RS+adhesive A, weight ratio according to 1:1 is mixed, carbon black is selected carbon black N550, and tenderer is plasticizing agent TP-95, and strengthening agent is zinc acrylate resin, vulcanzing agent is sulphur, promoter is altax, and crosslinking agent is cumyl peroxide (DCP), and co-crosslinker is iso-cyanuric acid triallyl ester (TAIC).
The modified hydrogenated nitrile butadiene rubber of described ethylene-vinyl acetate rubber is prepared from by following methods: ethylene-vinyl acetate rubber, hydrogenated nitrile-butadiene rubber and crosslinking agent are dropped into (initial temperature of general rubber mixing machine is about 60 ℃) in the rubber mixing machine, until the glue furnacing temperature of rubber mixing machine reaches 180 ℃, namely get the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber after the cooling, by weight, ethylene-vinyl acetate rubber is 50 parts, hydrogenated nitrile-butadiene rubber is 50 parts, 0.5 part of crosslinking agent (two 2,5).
Embodiment 3
A kind of timing belt of automobile as shown in Figure 1, described timing belt of automobile comprises successively that from outside to inside the main gel kind is the gum layer 1 of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber, surface treated fiberglass threads (Mitsui company, the glass cotton rope, specification ECG150-3/13-2.0SZ) framework layer 2 that consists of, the main gel kind is the tooth glue-line 3 of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber and base cloth through the main gel kind is that the cement dip of hydrogenated nitrile-butadiene rubber is processed the tooth layer of cloth 4 that forms, the internal surface of tooth glue-line 3 has some detent projection, and tooth layer of cloth 4 coats the internal surface of tooth glue-line 3.
The thickness of described gum layer is 2.5mm, and the thickness of described framework layer is 1.2mm, and the thickness of described tooth glue-line is 3.5mm, and the thickness of described tooth layer of cloth is 1.0mm.
The base cloth of described tooth layer of cloth is high elasticity nylon elastic cloth, and the continuous rating elongation rate of described high elasticity nylon elastic cloth is 120%; The base cloth immersion treatment is that base cloth is immersed in the rubber cement, takes out at once, enters baking oven under 100 ℃ ± 1 ℃ temperature, and baking 2-3min gets final product.
The surface treatment of fiberglass threads is specially: fiberglass threads is processed with resorcinol-formaldehyde-Ding arsenic latex adhesive first, and then is coated with one deck Kai Muluoke adhesive, and 155 ℃, baking 140s, the rubber absorption capacity of Kai Muluoke adhesive is 6%.Fiberglass threads is processed with resorcinol-formaldehyde-Ding arsenic latex adhesive and is specially: fiberglass threads is flooded through resorcinol-formaldehyde-Ding arsenic latex adhesive, then at 95 ℃, baking 80s, the rubber absorption capacity of resorcinol-formaldehyde on the fiberglass threads-Ding arsenic latex adhesive is 15%.The density of arranging of fiberglass threads is 80/100mm.
The main gel kind of tooth glue-line and gum layer is that the material prescription of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber is as follows, each component is all by weight: 100.0 parts of the modified hydrogenated nitrile butadiene rubbers of ethylene-vinyl acetate rubber, 6.0 parts in zine oxide, 2.0 parts of stearic acid, 3.0 parts in age resister, 60.0 parts of carbon blacks, 10.0 parts of tenderers, 10.0 parts of strengthening agents, 7.0 parts of crosslinking agents, 2.0 parts of co-crosslinkers.
The main gel kind that is used for the base cloth immersion treatment of tooth layer of cloth is that the rubber cement prescription of hydrogenated nitrile-butadiene rubber is as follows, each component is all by weight: 100.0 parts of hydrogenated nitrile-butadiene rubbers, 6.0 parts in zine oxide, 2.0 parts of stearic acid, 2.0 parts in age resister, 7.0 parts in tackiness agent, 60.0 parts of carbon blacks, 8.0 parts of tenderers, 5.0 parts of vulcanzing agents, 3.0 parts of promoter, 2.0 parts of co-crosslinkers.
In the above-mentioned prescription: the concrete model of age resister is anti-aging agent RD, tackiness agent is adhesive RS+adhesive A, weight ratio according to 1:1 is mixed, carbon black is selected carbon black N774, and tenderer is plasticizing agent TP-95, and strengthening agent is zinc acrylate resin, vulcanzing agent is sulphur, promoter is Vulcanization accelerator TMTD, and crosslinking agent is cumyl peroxide (DCP), and co-crosslinker is iso-cyanuric acid triallyl ester (TAIC).
The modified hydrogenated nitrile butadiene rubber of described ethylene-vinyl acetate rubber is prepared from by following methods: ethylene-vinyl acetate rubber, hydrogenated nitrile-butadiene rubber and crosslinking agent are dropped into (initial temperature of general rubber mixing machine is about 60 ℃) in the rubber mixing machine, until the glue furnacing temperature of rubber mixing machine reaches 170 ℃, namely get the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber after the cooling, by weight, ethylene-vinyl acetate rubber is 45 parts, hydrogenated nitrile-butadiene rubber is 55 parts, 0.9 part of crosslinking agent (two 2,5).
For the length of the modified hydrogenated nitrile butadiene rubber Timing Belt of assurance ethylene-vinyl acetate rubber is even, adopt the production procedure of the moulding of whole cylinder, the rear emery wheel polishing of cutting.
The mode of production of the present utility model
Adopt the method for positive moulding during moulding, that is: first bag subsides one deck tooth layer of cloth 4 on metal mold twines framework layer 2 again, packs tightly at last space and the applying of tooth layer of cloth that tooth glue-line 3(tooth glue-line can pass framework layer) and gum layer 1.
Film is all produced by mangler, the gap of control roller, and thickness 0.7-1.5mm, film cool off with cooling roll in calender line.
Sulfuration uses the flat gum cover of the vulcanization of rubber to carry out, that is: set curing parameter (temperature 160-180 degree by the technician at the control computer first, pressure 0.8-1.5Mpa, time 25-50min) again with the made-up belt of forming with metal mold, hang on the platform of autoclave press, package the flat gum cover of the corresponding vulcanization of rubber, press start button, whole sulfidation is finished under the monitoring of computer automatically, the operator can not change the running parameter of sulfurizing pot, has guaranteed the uniformity of every product degree of cure.
The tensioning of Horizontal double roller cutting machine is used in cutting, presets cutting width and feed velocity, and the wolfram steel cylinder blade axially becomes the feed mode of 90 ° of vertical cuts with being with cylinder, and computer is automatically controlled cutting and finished.
Polishing uses horizontal automatic sander to carry out, and presets belt length and the polishing amount of feed, uses emery wheel automatically to polish.
The performance comparison of different subjects glue kind
With the utility model and neoprene be main gel kind, hydrogenated nitrile-butadiene rubber be the main gel kind same specification isostructure manufacture test relatively, the results are shown in accompanying drawing 2, accompanying drawing 3.
Table 1
| ? | CR | HNBR | EVM modification HNBR |
| Tensile strength (Mpa) | 15.3 | 20.5 | 21.6 |
| Elongation at break (%) | 350 | 405 | 260 |
| Hardness (SHA °) | 73 | 75 | 76 |
The performance comparison of the film that the rear three kinds of different materials of table 1 expression sulfuration make; (wherein CR represents neoprene; HNBR represents hydrogenated nitrile-butadiene rubber; EVM modification HNBR represents the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber).
Table 2
| ? | CR | HNBR | EVM modification HNBR |
| Band back of the body hardness (SHA °) | 73 | 74 | 76 |
| Tensile strength (N/mm) | 382 | 401 | 475 |
| Denticle shear strength (N/mm) | 65 | 72 | 70 |
| Infantees bonding strength (N/ mm) | 10 | 11 | 12 |
| Core rope bonding strength (N) | 1000 | 1050 | 1020 |
The traditional performance contrast of the lower three kinds of different subjects material timing belt of automobiles of table 2 expression normal temperature, (wherein to represent material of main part be neoprene to CR; It is hydrogenated nitrile-butadiene rubber that HNBR represents material of main part; It is the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber that EVM modification HNBR represents material of main part).
Can find out according to above Fig. 2, Fig. 3 and table 1, table 2, when high temperature and low temperature, the life-span of the present utility model is apparently higher than other two kinds of Comparative Examples.
Above-described embodiment is a kind of better scheme of the present utility model, is not that the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technological scheme that claim puts down in writing.
Claims (7)
1. timing belt of automobile, it is characterized in that: described timing belt of automobile comprises successively that from outside to inside the main gel kind is the gum layer (1) of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber, the framework layer (2) that surface treated fiberglass threads consists of, the main gel kind is the tooth glue-line (3) of the modified hydrogenated nitrile butadiene rubber of ethylene-vinyl acetate rubber and base cloth through the main gel kind is that the cement dip of hydrogenated nitrile-butadiene rubber is processed the tooth layer of cloth (4) that forms, the internal surface of tooth glue-line (3) has some detent projection, and tooth layer of cloth (4) coats the internal surface of tooth glue-line (3).
2. a kind of timing belt of automobile according to claim 1, it is characterized in that: the base cloth of described tooth layer of cloth is high elasticity nylon elastic cloth, and the continuous rating elongation rate of described high elasticity nylon elastic cloth is 80%～120%.
3. a kind of timing belt of automobile according to claim 1, it is characterized in that: the density of arranging of fiberglass threads is 60-80 root/100mm.
4. according to claim 1 and 2 or 3 described a kind of timing belt of automobiles, it is characterized in that: the thickness of described gum layer is 1.5-2.5mm.
5. according to claim 1 and 2 or 3 described a kind of timing belt of automobiles, it is characterized in that: the thickness of described framework layer is 1.0-1.2mm.
6. according to claim 1 and 2 or 3 described a kind of timing belt of automobiles, it is characterized in that: the thickness of described tooth glue-line is 2.0-3.5mm.
7. according to claim 1 and 2 or 3 described a kind of timing belt of automobiles, it is characterized in that: the thickness of described tooth layer of cloth is 0.7-1.0mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220171687 CN202646533U (en) | 2012-04-23 | 2012-04-23 | Automobile timing belt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220171687 CN202646533U (en) | 2012-04-23 | 2012-04-23 | Automobile timing belt |
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| CN202646533U true CN202646533U (en) | 2013-01-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110758982A (en) * | 2019-11-20 | 2020-02-07 | 浙江双箭橡胶股份有限公司 | Carbon fiber core rubber conveying belt and manufacturing method thereof |
| CN110815991A (en) * | 2019-11-28 | 2020-02-21 | 徐州顺天工业用布有限公司 | Rubber industrial cloth and manufacturing method thereof |
-
2012
- 2012-04-23 CN CN 201220171687 patent/CN202646533U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110758982A (en) * | 2019-11-20 | 2020-02-07 | 浙江双箭橡胶股份有限公司 | Carbon fiber core rubber conveying belt and manufacturing method thereof |
| CN110758982B (en) * | 2019-11-20 | 2022-03-22 | 浙江双箭橡胶股份有限公司 | Carbon fiber core rubber conveying belt and manufacturing method thereof |
| CN110815991A (en) * | 2019-11-28 | 2020-02-21 | 徐州顺天工业用布有限公司 | Rubber industrial cloth and manufacturing method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20160423 |