CN100344441C - Rubber automobile multi-wedge belt and its manufacturing method - Google Patents
Rubber automobile multi-wedge belt and its manufacturing method Download PDFInfo
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- CN100344441C CN100344441C CNB2005100381254A CN200510038125A CN100344441C CN 100344441 C CN100344441 C CN 100344441C CN B2005100381254 A CNB2005100381254 A CN B2005100381254A CN 200510038125 A CN200510038125 A CN 200510038125A CN 100344441 C CN100344441 C CN 100344441C
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Abstract
The present invention relates to a multi-wedge belt for a rubber automobile and a manufacture method thereof, particularly to auxiliary parts of a driving fan, a generator, a water pump, an air-conditioner compressor, etc. of an automobile engine. The present invention belongs to the technical field of rubber products. The present invention adopts EPDM rubber, and compounding agents (zinc oxide, stearic acid, an anti-aging agent, carbon black, a softening agent, polyester staple fiber, a cross-linking agent and a joint cross-linking agent) are matched; the compounding agents are gradually added in batches, and two periods of mixing are carried out so as to form belt-body rubber; after sheet outlet of calendering and split joint of transverse cutting are carried out, a finished product is formed by forming, vulcanization, mold releasing, cutting, wedge grinding and machining of edge grinding. The present invention has the advantages of high intensity, abrasion resistance, good rebound resilience, little deformation, low use cost, simple manufacture process, little possibility of the product aging, 3 to 5 times of the service life of a neoprene multi-wedge belt, more than 150 thousand km of maintenance free road mileage for the multi-wedge belt of the automobile, stable performance, little possibility of crack appearance, long-term running at the environment temperature of 120 DEG C and highest use temperature of 150 DEG C.
Description
Technical field
The present invention relates to a kind of rubber automobile multi-wedge belt and manufacture method thereof, specifically be used for the automobile engine drive fan, generator, auxiliaries such as water pump and compressor of air conditioner are the crucial accessories of automobile engine, belong to the rubber product technical field.
Background technology
Before the present invention made, its primary raw material of automobile multi-wedge belt that is used on the automobile engine was made up of neoprene and compounding ingredient (magnesia, zinc oxide, stearic acid, carbon black, softening agent etc.) and polyester cord.Its production technology is as follows: 1, select for use main material neoprene and compounding ingredient to carry out mixing formation belt body glue; 2, mixing method is carried out calendering technology after finishing, and carries out heat refining before the sizing material rolling out film.Warm-up mill, rolling mill roller temperature need be controlled at 40-50 ℃; 3, opposite joint spliced after the film after the calendering need carry out horizontal cutting.4, in forming process, adopt mould around on film, twine cotton rope, again around film, and be placed in the preheating cabinet preheating and wait to vulcanize; 5, after sulfuration finishes, its sulfuration packing element will be through being cut into the single band with Rack with tube after cooling off; 6, the band embryo after the cutting grinds ring wedge with the setting sand flywheel knife; 7, the band embryo that has ground wedge carries out reconditioning to the slitter edge of two side faces again and becomes the satisfactory finished product of width.The automobile multi-wedge belt poor performance that adopts above-mentioned prescription and technology thereof to make, stable inadequately, easily aging, service life is short, and the use cost height, the manufacturing process complexity.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby a kind of intensity height, wear-resisting, ageing-resistant is provided, the total quality performance is uniform and stable, resilience good, the rubber automobile multi-wedge 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 multi-wedge belt and manufacture method thereof.
The main solution of the present invention is achieved in that
Its composition proportioning (percentage by weight) of rubber automobile multi-wedge belt of the present invention is:
A:EPDM rubber 54.00-58.00
B: zinc oxide 2.65-3.05
C: stearic acid 0.54-0.58
D: age resistor 0.54-0.58
E: carbon black 17.00-21.00
F: softening agent 5.60-5.80
G: polyester staple fiber 9.00-12.00
H: crosslinking agent 2.65-3.05
I: co-crosslinker 0.27-0.29
The present invention at first carries out rubber mixing-milling technique, before mixing, earlier EPDM rubber is plasticated, selective oxidation zinc, stearic acid, age resistor, carbon black, softening agent, polyester staple fiber, crosslinking agent, co-crosslinker divide in batches and add gradually on banbury then, carry out two-stage mixing and form belt body glue, rolling out film, horizontal cutting splicing are after moulding, sulfuration, the demoulding, cutting, mill wedge, edging, verify as finished product again.
Manufacture method of the present invention is as follows:
1, rubber mixing-milling technique:
(a) one section mixing: earlier EPDM rubber 15-25 the book of plasticating in mill led to, it is mixing to adopt banbury to carry out then, add mixing 40-60 second behind zinc oxide, stearic acid, the age resistor in proportion, add 1/2 carbon black and 1/2 softening agent and carry out mixing 80-90 second, add 1/2 carbon black again and the mixing 110-130 of 1/2 softening agent sweeps powder second, add the mixing 110-130 of polyester staple fiber second at last, discharge when temperature is 130-140 ℃, cooled off 4-6 hour, and entered two-stage mixing.
(b) two-stage mixing: get above-mentioned 2/3 elastomeric compound and add and add the mixing 115-125 of above-mentioned 1/3 elastomeric compound again behind crosslinking agent, the co-crosslinker and sweep powder after second, mixing again 55-65 second, discharge when temperature is 110-120 ℃ forms belt body glue.
2, calendering technology:
The film THICKNESS CONTROL is at 0.60-0.80mm during rolling out film, carries out behind the horizontal cutting 90 ° again and turns to the opposite joint splicing.
3, moulding process:
Elder generation is around the good film 1-3 layer of calendering on mould, twine polyester cord then, its winding displacement tension force is: 0.2-0.4MPa, density is 50-100 root/100mm, again on polyester cord around the good film 4-7 layer of calendering, covering barrier paper at last is the moulding compound blank, and moulding finishes the back and is placed on together with mould and enters down the road after preheating 15-25 minute in the preheating cabinet that temperature is controlled at 45-55 ℃ and vulcanize.
4, sulfuration process:
Above-mentioned moulding compound blank is placed in the vulcanizing tank vulcanizes, at first apply steam pressure in the gum cover outside, time is 6-8 minute, and the gum cover external pressure is 0.8-1.0MPa, and then to applying steam in the gum cover, the interior pressure time is, 40-60 minute, pressure was: 0.45-0.50MPa, after sulfuration finishes, steam discharge, and cool off.
5, the demoulding, cutting technique:
Sulfuration is carried out the demoulding after finishing, and is cut into the single band with Rack after the demoulding.
6, mill wedge technology:
The cutting back is gone up mill wedge machine and is ground ring wedge with the setting sand flywheel knife, feed divides 6-9 stride to carry out in mill wedge process, each stride depth of cut is 0.1-1.2mm, the time of staying is 5-8 second, whole mill wedge process can not be damaged cotton rope, in the mill wedge process, and the rubber powder of generation during employing water under high pressure cooling emery wheel and flushing are ground, adopt EGR elimination rubber powder, cycling use of water.
7, technology such as edging: carry out edging processing, check, packing warehouse-in behind the mill wedge.
Compared with the prior art the present invention has the following advantages:
Intensity height of the present invention, wear-resisting, resilience is good, is out of shape little; Use cost is low, and manufacturing process is simple; Product is difficult for aging, and be 3-5 times of neoprene polywedge bet its service life, and the non-maintaining distance travelled of automobile multi-wedge belt is reached more than 150,000 kilometers; Stable performance is not prone to crackle, can long-time running under 120 ℃ of environment temperatures, and maximum operation (service) temperature reaches 150 ℃ (in short-term).
Description of drawings:
Fig. 1 is a process chart of the present invention.
Fig. 2 is rubber bodies performance test result of the present invention.
The technical quality performance indications that Fig. 3 reaches for the present invention.
The equipment that is adopted is conventional equipment in the present invention, and the rubber of its selection and compounding ingredient raw material are market and buy.
Age resistor is in the present invention: RD
N.330 or N.550 carbon black is:
Softening agent is: Sunpar2280
Crosslinking agent is: DCP
Co-crosslinker: sulphur
The specific embodiment:
Technological 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 by weight) belt body glue prescription.
Embodiment one:
1, rubber mixing-milling technique:
The present invention mainly is that to utilize its main chain of EPDM rubber be not double bond containing fully saturated straight chain type structure, has higher chemical stability, thereby have ageing-resistant performances such as excellent ozone resistance, weatherability, hear resistance, substitute the neoprene that uses at present and develop automobile multi-wedge belt.According to factory's technical matters appointed condition and processing low energy consumption, selected for use moderate ethylene, Mooney viscosity lower, the hot strength height, wearability is good, and the EPDM rubber EPT3950 that produces of the good Bayer A.G of processing characteristics.
Rubber compounding adopts heat resistance better, the peroxide vulcanizing system that compression set is extremely low, and adopt and add the polyester staple fiber material and short fiber is aligned to strengthen the belt body lateral stiffness.
Rubber, when compounding ingredient is mixing, according to the relatively poor characteristics of EPDM compounding rubber processing characteristics, design the mixing method that compounding ingredient adds in batches gradually, guaranteed the coke burning performance and the physical and mechanical properties of elastomeric compound; Concrete operating equipment is selected mixer mixing for use, and its concrete operation method is as follows:
One section mixing: at first get main material EPDM rubber: 58,15-25 the book of plasticating in mill is logical, the employing capacity is that the banbury of 50 liters carries out mixing then, add zinc oxide 2.65, stearic acid 0.54, anti-aging agent RD 0.54, above-mentioned raw materials is added total amount after mixing 45 seconds be that 17 1/2N.550 carbon black and total amount are 5.6 1/2 softening agent Sunpar 2280, after carrying out mixing 80 seconds, add total amount again and be 17 1/2 N.550 carbon black and total amount are 5.6 1/2 softening agent Sunpar 2280, swept powder in mixing 110 seconds, add polyester staple fiber 9 at last, mixing 110 seconds, discharge when temperature reaches 130 ℃, cooled off 4 hours, and entered two-stage mixing.
Two-stage mixing: get above-mentioned total elastomeric compound 2/3 (42.6kg), add above-mentioned remaining elastomeric compound 1/3 (21.3kg) again behind adding crosslink agent DCP 2.65, the co-crosslinker sulphur 0.27 and sweep powder after mixing 115 seconds, mixing again 55 seconds, discharge when temperature reaches 110 ℃ formed belt body glue.
2, calendering technology:
Calender on above-mentioned elastomeric compound is after carrying out heat refining on the warm-up mill is carried out rolling out film, and the film THICKNESS CONTROL is at 0.6-0.80mm, carries out horizontal cutting (cut-out) and turn to the opposite joint splicing for back 90 ° on splicing machine again.
3, moulding process:
Select mould for use, elder generation is around film 1-3 layer on mould, twine polyester cord then, its winding displacement tension force is: 0.2-0.4MPa, density is 50-100 root/100mm, again on polyester cord around 5 layers on film, covering barrier paper at last is the moulding compound blank, moulding finishes back glue embryo and is placed in the preheating cabinet that temperature is controlled at 45 ℃ preheating together with mould and enters down the road after 15 minutes and vulcanize.
4, sulfuration process:
Sulfuration process mainly is sulfuration three elements (being temperature, pressure, time), because we adopt gum cover sulfuration method, pressure and temperature all are to guarantee by steam.Mainly be to utilize the inside and outside steam pressure difference of gum cover that sulfide stress is provided, vulcanize the matrix sizing material by the temperature that dies cavity steam provides, cure time is got the sizing material sulfurizing point time.Sulfuration process is as follows: the glue embryo together with mould after the above-mentioned moulding is placed on pan vulcanization, at first apply steam pressure in the gum cover outside, time is 6 minutes, the gum cover external pressure is: 0.8-1.0MPa, and then to applying steam in the gum cover, the interior pressure time is 40 minutes, pressure is: 0.45-0.50MPa, after sulfuration finished, steam discharge was put into cooling bath with the band embryo that vulcanizates together with mould and is cooled off.
5, the demoulding, cutting technique:
Be cooled to carry out the demoulding below 40 ℃, after the demoulding glue germ band tube be cut into single band embryo with Rack.
6., mill wedge technology:
Control mill wedge machine on the single band embryo well feed velocity and the depth of cut with the setting sand flywheel knife and grind ring wedge, can not damage cotton rope.In the mill wedge process, the rubber powder of generation adopted EGR elimination rubber powder, cycling use of water during employing water under high pressure cooling emery wheel and flushing were ground.
7, technology such as edging:
The band embryo that has ground wedge carries out reconditioning to the slitter edge of two side faces again and becomes the satisfactory finished product of width.
8, after the assay was approved, packing warehouse-in by the product technology requirement.
Embodiment two:
Main material rubber and compounding ingredient, it forms proportioning (percentage calculating by weight).
In the present embodiment, the main material of selecting in rubber mixing-milling technique, compounding ingredient and formula rate thereof are as follows: main material rubber is selected EPDM rubber for use: 56, zinc oxide: 2.85, stearic acid 0.55, antiaging agent RD:0.57, carbon black N.550: 19.36, softening agent Sunpar 2280:5.72, polyester staple fiber: 10.82, crosslink agent DCP: 2.88, co-crosslinker sulphur: 0.28.Above-mentioned rubber and compounding ingredient be the same processing step that adopts among the embodiment 1 in rubber mixing-milling technique.Its process conditions are difficult characteristics of disperseing when mixing according to EPDM rubber and compounding ingredient, have designed compounding ingredient and have divided the mixing method of segmentation that adds gradually in batches.One section mixing: mixing time was respectively 50 seconds, 85 seconds, 120 seconds, and temperature is 135 ℃; Two-stage mixing: mixing time was respectively 120 seconds, 60 seconds, and temperature is 115 ℃; Thereby formed the horizontal cutting splicing behind the rolling out film again of belt body glue, and carried out moulding process.
Moulding process: the preheating cabinet temperature is 50 ℃, and be 20 seconds preheating time, and its winding displacement tension force is: 0.2-0.4MPa, density is 50-100 root/100mm, again on polyester cord around 6 layers on film.When high-temperature shaping vulcanizes, adopt rubber gum cover sulfuration method, solve and guaranteed the even uniformity of polywedge bet total quality performance.
Sulfuration process: apply steam pressure in the gum cover outside, the time is 7 minutes, and the gum cover external pressure is: 0.8-1.0Mpa; The interior pressure time is 50 minutes, and pressure is: 0.45-0.50MPa.Packing is put in storage after carrying out operations such as the demoulding, cutting, mill wedge, edging, check after sulfuration finishes.Adopt above-mentioned prescription and manufacture method thereof can make the automobile multi-wedge belt that meets quality index, stable performance equally.
Embodiment three:
Main material rubber and compounding ingredient, it forms proportioning (percentage by weight).
In the present embodiment, get EPDM rubber: 54, zinc oxide: 3.05, stearic acid 0.58, anti-aging agent RD: 0.58, carbon black N.330: 21, softening agent Sunpar 2280:5.8, polyester staple fiber: 12, crosslink agent DCP: 3.05, co-crosslinker sulphur: 0.29.One section mixing: mixing time was respectively 60 seconds, 90 seconds, 130 seconds, and temperature is 140 ℃; Two-stage mixing: mixing time was respectively 125 seconds, 65 seconds, and temperature is 120 ℃; Moulding process: the preheating cabinet temperature is 55 ℃, and be 25 seconds preheating time, and its winding displacement tension force is: 0.2-0.4MPa, density is 50-100 root/100mm, again on polyester cord around 7 layers on film;
Sulfuration process: apply steam pressure in the gum cover outside, the time is 8 minutes, and the gum cover external pressure is: 0.8-1.0Mpa; The interior pressure time is 60 minutes, and pressure is: 0.45-0.50MPa.
Prolong slice, horizontal cutting splicing, moulding, sulfuration, the demoulding, cutting, mill wedge, edging, check processing steps such as (checks of sampling rerum natura) and process conditions such as above-mentioned thereof according to the compounding rubber (two-stage mixing), the belt body glue laminated that adopt among the embodiment one, two, can make finished product equally, performance reaches the automobile multi-wedge belt of capability and performance index.
Claims (2)
1, a kind of automobile multi-wedge belt, it is characterized in that its form and proportioning by weight percentage be:
A:EPDM rubber 54.00-58.00
B: zinc oxide 2.65-3.05
C: stearic acid 0.54-0.58
D: age resistor 0.54-0.58
E: carbon black 17.00-21.00
F: softening agent 5.60-5.80
G: polyester staple fiber 9.00-12.00
H: crosslinking agent 2.65-3.05
I: co-crosslinker 0.27-0.29
At first carry out rubber mixing-milling technique, earlier EPDM rubber is plasticated when mixing for one section, then zinc oxide, stearic acid, age resistor, carbon black, softening agent, polyester staple fiber, crosslinking agent, co-crosslinker are divided in batches and add gradually on banbury, carry out two-stage mixing and form belt body glue, rolling out film, horizontal cutting splicing are after moulding, sulfuration, the demoulding, cutting, mill wedge, edging, verify as finished product again.
2, a kind of manufacture method of automobile multi-wedge belt as claimed in claim 1 is characterized in that adopting following process conditions:
(1), rubber mixing-milling technique:
A, one section are mixing: earlier EPDM rubber 15-25 the book of plasticating led to, carry out mixing then, add mixing 40-60 second behind zinc oxide, stearic acid, the age resistor in proportion, add 1/2 carbon black and 1/2 softening agent and carry out mixing 80-90 second, add 1/2 carbon black again and the mixing 110-130 of 1/2 softening agent sweeps powder second, add the mixing 110-130 of polyester staple fiber second at last, discharge when temperature is 130-140 ℃, cooled off 4-6 hour, and entered two-stage mixing;
B, two-stage mixing: get above-mentioned 2/3 elastomeric compound and add and add the mixing 115-125 of above-mentioned 1/3 elastomeric compound again behind crosslinking agent, the co-crosslinker and sweep powder after second, mixing again 55-65 second, discharge when temperature is 110-120 ℃ forms belt body glue;
(2), calendering technology:
Film thickness carries out turning to the opposite joint splicing behind the horizontal cutting at 0.60-0.80mm again during rolling out film;
(3), moulding process:
Elder generation is around the good film 1-3 layer of calendering on mould, twine polyester cord then, its winding displacement tension force is: 0.2-0.4MPa, density is 50-100 root/100mm, again on polyester cord around the good film 4-7 layer of calendering, covering barrier paper at last is the moulding compound blank, and moulding finishes the back, and to be placed on temperature together with mould be in 45-55 ℃ the preheating cabinet preheating 15-25 minute;
(4), sulfuration process:
Above-mentioned moulding compound blank is placed in the vulcanizing tank vulcanizes, apply steam pressure in the gum cover outside, time is 6-8 minute, the gum cover external pressure is 0.8-1.0MPa, and then to applying steam in the gum cover, the interior pressure time is: 40-60 minute, pressure is: 0.45-0.50MPa, after sulfuration finishes, steam discharge, and cool off;
(5), the demoulding, cutting technique:
Carry out the demoulding after the cooling, be cut into single band after the demoulding;
(6), mill wedge technology: grind ring wedge after the cutting;
(7), edging technology: carry out edging processing behind the mill wedge, verify as finished product.
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| CNB2005100381254A CN100344441C (en) | 2005-01-13 | 2005-01-13 | Rubber automobile multi-wedge belt and its manufacturing method |
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| CNB2005100381254A CN100344441C (en) | 2005-01-13 | 2005-01-13 | Rubber automobile multi-wedge belt and its manufacturing method |
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| CN102146982A (en) * | 2011-04-06 | 2011-08-10 | 宁波丰茂远东橡胶有限公司 | Jointed toothed V belt |
| WO2014032172A1 (en) * | 2012-08-31 | 2014-03-06 | Soucy Techno Inc. | Rubber compositions and uses thereof |
| US9663640B2 (en) | 2013-12-19 | 2017-05-30 | Soucy Techno Inc. | Rubber compositions and uses thereof |
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| US9663640B2 (en) | 2013-12-19 | 2017-05-30 | Soucy Techno Inc. | Rubber compositions and uses thereof |
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| CN1651232A (en) | 2005-08-10 |
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