CN1249146C - Rubber automobile synchronous belt and its producing method - Google Patents
Rubber automobile synchronous belt and its producing method Download PDFInfo
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- CN1249146C CN1249146C CN 03132099 CN03132099A CN1249146C CN 1249146 C CN1249146 C CN 1249146C CN 03132099 CN03132099 CN 03132099 CN 03132099 A CN03132099 A CN 03132099A CN 1249146 C CN1249146 C CN 1249146C
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Abstract
The present invention relates to a rubber automobile synchronous belt and a manufacture method thereof, which is applied to the ignition of correct time and gas distribution of a gasoline engine of a cam shaft and is a key mating part of an automobile engine. The present invention belongs to the technical field of rubber products. The present invention uses elastic nylon fabric of high elastic force as tooth surface wrapping fabric of the synchronous belt, adopts hydrogenation nitrile rubber as rubber, and is matched with a compounding agent (zinc oxide, stearic acid, antiager, softener, sulfur and an accelerating agent); the mixture gradually added by batches is mixed and milled by two sections, and thus, a belt colloid is formed; then, sheets are formed by calendering, and the sheets are packaged and put into a warehouse through forming, vulcanization, mould releasing, grinding, cutting machining and checking. The product of the present invention has the advantages of high intensity, abrasion resistance, ozone resistance, good rebound resilience, small deformation, low use cost and simple manufacture process; the product is not easily aged, and the service life of the product is at least 2 to 3 times of the service life of a neoprene synchronous belt; the travel mileage without maintenance of an automobile synchronous belt can reach more than 100000 kilograms; the performance is stable, cracks do not easily appear, and the present invention can run at the environmental temperature of 130 DEG C for a long term.
Description
Technical field:
The present invention relates to a kind of rubber automobile band and manufacture method thereof synchronously, be applied to the petrolic fixed ignition of camshaft, distribution, is the crucial accessory of motor car engine, belongs to the rubber product technical field.
Background technology:
Before the present invention made, its main raw material of automobile synchronous belt that is used on the motor car engine was made up of nylon cloth, glass cord, chloroprene rubber and Synergist S-421 95 (oxidation U.S., stearic acid, protective agent, polyethylene, semi-reinforcing carbon black, aromatic hydrocarbon oil, zinc oxide etc.).Its production technique is as follows: 1. at first the snappiness nylon cloth is handled.Adopt rare cement dip to handle to nylon cloth earlier, and in treatment solution, add isocyanate ester compound, with oil-proofness, wear resistance and and the colloidal bounding force that improves nylon cloth.On the adhesive face of nylon cloth and matrix glue, carry out the coating of the dense rubber cement of single face then and handle, to improve the bounding force of nylon cloth and rubber; 2. it is mixing to select for use main raw material chloroprene rubber and Synergist S-421 95 to carry out, and adopts two sections mixing methods to form belt body glue in mixing process; 3. mixing method is carried out calendering technology after finishing, and carries out heat refining before the sizing material rolling out film.Warm-up mill, calendar rolls temperature need be controlled at 40-50 ℃; 4. in moulding process, adopt cover cloth cover on mould, the coiling rope around last film, and is placed in the preheated tank preheating and waits to vulcanize; 5. after sulfuration finished, its sulfuration packing element carried out attrition process through needing after cooling off to the surface of synchronous band; 6. the synchronous band after grinding carries out cutting processing again, test package is a certified products.The synchronous band poor performance that adopts above-mentioned prescription and technology thereof to make, stable inadequately, intensity is low, and easily aging, work-ing life is short, and the use cost height, the manufacturing process complexity.
Summary of the invention:
The object of the present invention is to provide a kind of intensity height, wear-resisting, anti-ozone, the total quality performance is uniform and stable, rebound resilience good, should not wear out the automobile synchronous belt of long service life.
Another object of the present invention is to provide a kind of use cost low, and manufacturing process is simple, long-time running at high temperature, and non-maintaining automobile synchronous belt and manufacture method thereof.
The main solution of the present invention is achieved in that
Rubber automobile of the present invention is with it to form proportioning (percentage ratio by weight) synchronously:
A: hydrogenated nitrile-butadiene rubber 53.01-57.01
B: zinc oxide 2.65-2.85
C: stearic acid 0.53-0.57
D: protective agent 2.10-2.30
E: semi-reinforcing hydrocarbon black 29.80-31.80
F: tenderizer 5.40-5.60
G: sulphur 0.43-0.45
H: promotor 2.65-2.80
The present invention at first carries out the rubber cement surface treatment to elastic nylon cloth, and tailor's cloth cover is stand-by, carry out rubber mixing-milling technique then, earlier hydrogenated nitrile-butadiene rubber is carried out mastication, selective oxidation zinc, stearic acid, protective agent, semi-reinforcing hydrocarbon black, tenderizer, sulphur, promotor are divided in batches and are added gradually, carry out two-stage mixing and form the band colloid, rolling out film again is through moulding, sulfuration, the demoulding, grinding, cut, verify as finished product.
Manufacture method of the present invention is as follows:
1. elastic nylon cloth is carried out surface treatment, elastic nylon cloth is immersed in the rare rubber cement of hydrogenated nitrile-butadiene rubber handles, rubber cement concentration is: 15-17% advances in the fabric fibre dipping glue penetration, and add M300 isocyanic ester tackifier in rare glue; Carry out dense rubber cement coating and then and handle, rubber cement concentration is 24-26%, makes the attached a certain amount of glue-line of fabric face, carries out heat drying then, and temperature is controlled at the 85-95 degree, and the adhesive plaster gauge control is at 0.7-0.8mm.
2. rubber mixing-milling technique:
(a) one section mixing: adopt Banbury mixer to carry out mixing, earlier hydrogenated nitrile-butadiene rubber is carried out mastication 55-65 second, add mixing 85-95 second behind sulphur, zinc oxide, stearic acid, the protective agent then in proportion, add 1/3 carbon black and carry out mixing 85-95 second, add 1/3 carbon black and the mixing 110-130 of 1/2 tenderizer second, add 1/3 carbon black and the mixing 110-130 of 1/2 tenderizer again and sweep powder second, when reaching 100-110 ℃, mixing again 90-180 second or temperature carry out discharge, cooled off 4-6 hour, and entered two-stage mixing.
(b) two-stage mixing: get above-mentioned 2/3 rubber unvulcanizate and add and add the mixing 115-125 of above-mentioned 1/3 rubber unvulcanizate again after the promotor and sweep powder after second, mixing again 55-65 second or when temperature reaches 88-92 ℃ discharge, form the band colloid, rolling out film again, film thickness is at 0.60-0.70mm.
3. moulding process:
Cover cloth cover on mould, cloth puts around glass cord, its winding displacement tension force is: 0.2-0.7Mpa, density is 50-100 root/mm, again on fiber rope around the good film 2-7 layer of calendering, cover interleaving paper at last, after moulding finishes, enter down the road and vulcanize.
4. sulfuration process:
Above-mentioned moulding compound blank is placed in the vulcanizing boiler vulcanizes, at first apply vapor pressure in the gum cover outside, time is 6-8.5 minute, and the gum cover external pressure is 0.7-1.05Mpa, and then to applying steam in the gum cover, the interior pressure time is, 30-50 minute, pressure was: 0.45-0.50Mpa, after sulfuration finishes, steam discharge, and cool off.
5. the demoulding, grinding technics:
Sulfuration is carried out the demoulding after finishing, and goes up shredder after the demoulding and carries out attrition process, and tape thickness is made for 2-11mm synchronously.
6. technology such as cutting: carry out cutting processing, check, printing, packing warehouse-in after the grinding.
Compared with the prior art the present invention has the following advantages:
Intensity height of the present invention, wear-resisting, anti-ozone, rebound resilience is good, is out of shape little; Use cost is low, and manufacturing process is simple; Product is difficult for aging, and be 2-3 times that chloroprene rubber is with synchronously its work-ing life, and the non-maintaining actual service life of automobile synchronous belt is reached more than 100,000 kilometers; Stable performance is not prone to crackle, can long-time running under 130 ℃ of envrionment temperatures.
Description of drawings:
Fig. 1 is a process flow sheet of the present invention;
Fig. 2 is rubber bodies performance test result of the present invention;
The technical quality performance index that Fig. 3 reaches for the present invention;
The equipment that is adopted in we's invention is conventional equipment: the rubber of its selection and Synergist S-421 95 raw material are market and buy.
Protective agent is in the present invention: ODPA, one-level
Tenderizer is: TP-95
Promotor is: short CZ
Embodiment:
Technical process during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
It forms the present invention and proportioning (percentage ratio by weight) band colloid prescription.
Embodiment one:
The present invention adopts high-tenacity elastic nylon cloth as being with flank of tooth infantees synchronously.Because as the synchronous toothed belt infantees, except that higher intensity is arranged, also to have good wear resistance and weft direction stretch fill the tooth ability well outside, require also to have that good and belt body are glued makes a concerted effort by force, therefore must carry out surface treatment to elastic nylon cloth
1, the processing of snappiness nylon cloth:
At first nylon cloth is carried out the rare cement dip of hydrogenated nitrile-butadiene rubber and handle (rubber cement concentration is 15-17%), dipping glue is fully penetrated in the fabric fibre, and in above-mentioned treatment solution (rare rubber cement), add M300 isocyanic ester tackifier in right amount.Carry out dense rubber cement coating and then and handle (rubber cement concentration is 24-26%), make the attached a certain amount of glue-line of fabric face, the nylon cloth to the band glue-line carries out the heat drying processing then, and its temperature is controlled at 85-95 ℃, and the adhesive plaster gauge control is at 0.7-0.8mm.Next it is stand-by the exsiccant adhesive plaster to be carried out tailor's cloth cover, and cloth cover girth then calculates according to belt length, participates in moulding at last and makes.
2. rubber mixing-milling technique:
The present invention utilizes paracril hydrogenation processing and the new type rubber resilient material with excellent thermotolerance, ageing resistance, low temperature resistant subduing property, elasticity of elongation that generates substitutes the chloroprene rubber that uses at present and develops automobile synchronous belt.According to factory's technical matters appointed condition and processing less energy-consumption, help sulfur cross-linking and sulfuration and fill the requirement of tooth when typing rubber mobility, selected for use degree of hydrogenation medium, mooney viscosity is lower, the intensity height, wear-resisting, the ozone proof hydrogenated nitrile-butadiene rubber Zetpol-2020L of Nippon Zeon Co., Ltd..
Rubber compounding selects for use high heat-proof low-sulfur-Gao to urge vulcanization system: the employing reinforcement is good, rebound resilience is good, tension set is less, and processibility is the softening system of reinforcement of semi-reinforcing hydrocarbon black preferably.
Rubber, when Synergist S-421 95 is mixing, according to Synergist S-421 95 difficult dispersion characteristics in the hydrogenation nitrile rubber, has designed Synergist S-421 95 and divided the mixing method of segmentation that adds gradually in batches; Adopt rubber coating sulfuration method during the high-temperature shaping sulfuration, solve and guaranteed the even unity of synchronous band total quality performance.Concrete operating equipment is selected mixer mixing for use, and its concrete operation method is as follows:
One section mixing: at first get the main raw material hydrogenated nitrile-butadiene rubber: 57, carry out mastication 55-65 second, add acceptable end product sulphur 0.4 then, zinc oxide: 2.6, secondary stearic acid: 0.5, high temperature resistance, the ODPA of anti-ozone one-level protective agent: 2.1, the mixing 85-95 of above-mentioned raw materials is added total amount during second be 29.40 1/3 semi-reinforcing hydrocarbon black, carry out mixing 85-95 again during second, add total amount again and be 29.40 1/3 semi-reinforcing hydrocarbon black and total amount and be 5.4 the mixing 110-130 of 1/2TP-95 tenderizer during second, adding total amount again and be 29.4 1/3 semi-reinforcing hydrocarbon black and total amount and be 5.4 1/2 TP-95 tenderizer continues mixing 110-130 and sweeps powder during second, and then mixing 110-130 second, when reaching 105-115 ℃, temperature carries out discharge, and cool off and carried out two-stage mixing in 4-6 hour.
Two-stage mixing: get above-mentioned total rubber unvulcanizate 2/3 successively, add promotor (short CZ) simultaneously: 2.6, add above-mentioned total rubber unvulcanizate 1/3 mixing 115-125 again and sweep powder during second, mixing again 55-65 second, when reaching 88-92 ℃, temperature carries out discharge.Form belt body glue behind the discharge, again through the rolling press rolling out film, its film gauge control is at 0.60-0.70mm.
3. moulding process:
Select forming mould for use, on mould, put above-mentioned tailor's cloth cover, put around glass cord at cloth, its winding displacement tension force is: 0.2-0.7Mpa, density is: 50-100 root/mm, on the glass cord around on the good film 2-7 layer of calendering, cover interleaving paper then, carry out moulding, moulding finishes, and prepares to enter down the road sulfuration.
4. sulfuration process:
Sulfuration process mainly is the control of sulfuration three elements (being time, temperature, pressure).Because we have adopted gum cover sulfuration method, its pressure and temperature all guarantee by steam, mainly be to utilize the inside and outside vapor pressure difference of gum cover to fill the band tooth, vulcanize belt body rubber by the temperature that steam in the gum cover provides, curing time is got the sizing material sulfurizing time, sulfuration process is as follows: the colloid after the above-mentioned moulding is placed on pan vulcanization, at first apply vapor pressure in the gum cover outside, time is 6-8.5 minute, the gum cover external pressure is: 0.7-1.05Mpa, and then exerted pressure in the beginning gum cover 30-50 minute, press in the gum cover to be: 0.45-0.50Mpa, last steam discharge finishes cooling.
5. the demoulding, grinding technics:
Sulfuration is carried out the demoulding after finishing, and goes up shredder after the demoulding and carries out attrition process, requires smooth surface after the grinding, makes synchronous tape thickness at 2-11mm according to dimensional requirement.
6. cutting technique:
Above-mentioned blank is utilized circular cutter cutting, and width is decided according to customer need, requires cut surface smooth smooth.
Other:
By the product technology requirement after the assay was approved, stamp trade mark, model, lot number etc., packing warehouse-in then.
Embodiment 2: main raw material rubber and Synergist S-421 95, it forms proportioning (percentage ratio calculating by weight).
In the present embodiment, at first the high-tension nylon cloth is carried out surface treatment, adopt the treatment process among the embodiment 1 to carry out.The main raw material of selecting in rubber mixing-milling technique, Synergist S-421 95 and formula rate thereof are as follows: main raw material rubber is selected hydrogenated nitrile-butadiene rubber for use: 55, zinc oxide: 2.7, stearic acid 0.55, protective agent: 2.2, semi-reinforcing hydrocarbon black: 30.2, tenderizer: 5.5, sulphur: 0.42, promotor: 2.7.Above-mentioned rubber and Synergist S-421 95 be the same processing step that adopts among the embodiment 1 in rubber mixing-milling technique.Its processing condition are difficult dispersion characteristics when mixing according to hydrogenated nitrile-butadiene rubber and Synergist S-421 95, have designed Synergist S-421 95 and have divided the mixing method of segmentation that adds gradually in batches, thereby formed band colloid rolling out film again, and carried out moulding process.When high-temperature shaping vulcanizes, adopt rubber coating sulfuration method, solve and guaranteed the even unity of synchronous band total quality performance.Sulfuration finishes the laggard demoulding, grinding, cutting, and check waits the packing warehouse-in.Adopt above-mentioned prescription and manufacture method thereof can make the automobile synchronous belt that meets quality index, stable performance equally.
Embodiment 3:
The treatment process that high-tension elastic nylon cloth is handled among the same embodiment 1,2 of employing is carried out in embodiments of the present invention.
Main raw material rubber and Synergist S-421 95, it forms proportioning (percentage ratio by weight).
Get hydrogenated nitrile-butadiene rubber: 53, zinc oxide: 2.18, stearic acid: 0.57, high temperature resistance, the protective agent of anti-ozone: 2.3, semi-reinforcing hydrocarbon black: 31.8, tenderizer: 5.6, sulphur: 0.45, promotor: 2.8.According to the compounding rubber (two-stage mixing) that adopts among the embodiment 1.2, band colloid rolling out film, moulding, sulfuration, the demoulding, grinding, cutting, check processing step and processing condition thereof such as (checks of sampling rerum natura), can make equally and meet the capability and performance index that end properties reaches.
Claims (1)
1. automobile synchronous belt, it is characterized in that its form and proportioning by weight percentage ratio be:
A: hydrogenated nitrile-butadiene rubber 57
B: zinc oxide 2.6
C: stearic acid 0.5
D: protective agent 2.10
E: semi-reinforcing hydrocarbon black 29.40
F: tenderizer 5.40
G: sulphur 0.4
H: promotor 2.6
At first elastic nylon cloth is carried out the rubber cement surface treatment, and tailor's cloth cover is stand-by, carry out rubber mixing-milling technique then, hydrogenated nitrile-butadiene rubber is carried out mastication, selective oxidation zinc, stearic acid, protective agent, semi-reinforcing hydrocarbon black, tenderizer, sulphur, promotor are divided in batches and are added gradually, carry out two-stage mixing and form band colloid rolling out film, through moulding, sulfuration, the demoulding, grinding, cut, verify as finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132099 CN1249146C (en) | 2003-07-18 | 2003-07-18 | Rubber automobile synchronous belt and its producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132099 CN1249146C (en) | 2003-07-18 | 2003-07-18 | Rubber automobile synchronous belt and its producing method |
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| CN1491978A CN1491978A (en) | 2004-04-28 |
| CN1249146C true CN1249146C (en) | 2006-04-05 |
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| CN 03132099 Expired - Fee Related CN1249146C (en) | 2003-07-18 | 2003-07-18 | Rubber automobile synchronous belt and its producing method |
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| CN109134984B (en) * | 2018-07-25 | 2021-01-08 | 宁波伏龙同步带有限公司 | Synchronous belt for preventing lithium battery electrolyte corrosion |
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2003
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