CN103408916A - Sealing gasket material for automobile braking pressure increasing valve and manufacturing method of sealing gasket - Google Patents
Sealing gasket material for automobile braking pressure increasing valve and manufacturing method of sealing gasket Download PDFInfo
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- CN103408916A CN103408916A CN2013103421900A CN201310342190A CN103408916A CN 103408916 A CN103408916 A CN 103408916A CN 2013103421900 A CN2013103421900 A CN 2013103421900A CN 201310342190 A CN201310342190 A CN 201310342190A CN 103408916 A CN103408916 A CN 103408916A
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Abstract
The invention discloses a sealing gasket material for an automobile braking pressure increasing valve and a manufacturing method of the sealing gasket. The sealing gasket material comprises the following raw material compositions in weight part: 80-120 parts of epichlorohydrin rubber, 35-55 parts of carbon black, 3-5 parts of acid-base equilibrium agents, 1-3 parts of lubricants, 1.5-4 parts of vulcanizer, and 1-4 parts of vulcanizing activator. Through the adoption of the optimized formula for manufacturing the sealing gasket by using the sealing gasket material for the automobile braking pressure increasing valve, provided by the invention, the material is high in high temperature resistance, excellent in oil resistance, strong in abrasion resistance, and good in processing performance, and has the advantage of low cost; in the manufacturing technology of the sealing gasket, the scorch resistant vulcanizer is added firstly, and then mixing is performed through two phases, so that the uniform mixing of various filling materials is guaranteed, while the fact that the main vulcanizer cannot be unexpectedly vulcanized in advance due to the exceedingly high temperature is ensured; besides, the vulcanization stability can be guaranteed in virtue of the added acid-base equilibrium agents, and the processing stability can be guaranteed in virtue of the added lubricants, so that the production stability and qualification rate of modified products are improved.
Description
Technical field
The present invention relates to the technical field of automobile brake pressure charging valve, relate in particular to the manufacture method of a kind of automobile brake pressure charging valve with gasket material and gasket.
Background technology
Drift stop is that the car enforce ground in making to travel slows down until stop, or maintains certain speed of a motor vehicle while making the automobile lower long slope, guarantees that automobile can rest reliably at the unlikely smooth device in Shang，Zai original place, ramp.Vacuum booster is the key device of breaking system, and pressure charging valve is to be the additional mechanical supercharging device in vacuum booster.Enhancing along with sound and people's awareness of safety of domestic automobile security legislation, the vacuum booster pressure charging valve seems more and more important, and pressure charging valve is its crucial parts with gasket, pressure charging valve requires anti-higher temperature and wear-resisting, oil resistance simultaneously with gasket, and technical requirements is very high.Domestic traditional automobile gasket material, can not meet simultaneously the performance requriements of high temperature resistant and oil resistant and have good processing characteristics.With American-European supplier, compare, without any technical elements advantage, even cost ratio is low abroad, general producer also dare not be used.Current domestic dependence on import used, this is also a bottleneck of domestic automobile industry.
Summary of the invention
In view of this, one aspect of the present invention provides a kind of automobile brake pressure charging valve gasket material, and it is good that this material high thermal resistance is high, oil-proofness good, wear resistance reaches by force processing characteristics.
A kind of automobile brake pressure charging valve gasket material, the parts by weight of each feed composition are as follows:
Chlorohydrin rubber: 80～120
Carbon black: 35～55
Acid base equilibrium agent: 3～5
Lubricant: 1～3
Vulcanizing agent: 1.5～4
Vulcanization leveller: 1～4.
Wherein, the parts by weight of each feed composition are as follows:
Chlorohydrin rubber: 90～110
Carbon black: 40～55
Acid base equilibrium agent: 4～5
Lubricant: 1～3
Vulcanizing agent: 1.5～3
Vulcanization leveller: 1～3.
Wherein, the parts by weight of each feed composition are as follows:
Chlorohydrin rubber: 100
Carbon black: 45
Acid base equilibrium agent: 5
Lubricant: 1.8
Vulcanizing agent: 2
Vulcanization leveller: 3.
The DHT-4A of import is selected in acid base equilibrium agent of the present invention, and lubricant is selected efficient SPR-66, and vulcanizing agent is selected anti-incipient scorch vulcanizing agent P-15, and vulcanization leveller is selected XL-21S.The present invention can also select the same or similar raw material of character.
The present invention provides a kind of automobile brake pressure charging valve manufacture method with gasket on the other hand, and it is good that the method makes that the high thermal resistance of sealing-ring is high, oil-proofness good, wear resistance reaches by force processing characteristics.
A kind of method of above-mentioned automobile brake pressure charging valve with gasket material manufacture gasket of using comprises the following steps:
(1) mixing for the first time: as according to parts by weight, chlorohydrin rubber, carbon black, acid base equilibrium agent, lubricant and vulcanizing agent to be placed in to Banbury mixer and to carry out banburying for the first time; Rubber unvulcanizate after banburying is for the first time proceeded to mill and open for the first time refining;
(2) mixing for the second time: as to carry out banburying for the second time to adding vulcanizing agent to be placed on Banbury mixer in the rubber unvulcanizate after opening refining for the first time; Rubber unvulcanizate after banburying is proceeded to mill and open for the second time refining;
(3) rubber unvulcanizate that will open for the second time after refining filters and is compressed to profiled member;
(4) profiled member is put into to mould and carried out primary vulcanization, then insert in baking oven and vulcanize for the second time;
(5) profiled member after post cure successively is processed into to work in-process, cutting, obtains finished product.
Wherein, described banburying for the first time is included in 155～165 ℃ of binder removals; The described refining process of opening for the first time comprises turning refining of 2～4 thin-passes and after described thin-pass 7 times or 8 times.
Wherein, described banburying for the second time is included in 95～105 ℃ of binder removals; The described refining process of opening for the second time comprises turning refining of 2～4 thin-passes and after described thin-pass 5 times or 6 times.
Wherein, the temperature of described primary vulcanization is 160～165 ℃, and the time is 270～330s, and pressure is 200～220kgf/cm
2The described temperature of sulfuration for the second time is 220～240 ℃, and the time is 16～20h.
Wherein, described for the second time mixing after mixing for the first time at least 48h carry out.
Wherein, the described thin-pass thickness of opening for the first time refining and opening refining for the second time is below 4mm.
Automobile brake pressure charging valve of the present invention is manufactured the gasket material optimization of C/C composites with gasket material, makes that this material high thermal resistance is high, oil-proofness good, wear resistance reaches by force processing characteristics good, and cost has advantage.On the manufacturing process of gasket, first vulcanizing agent is first added, guarantee the good distribution effect; Mixing in two stages, not only guaranteed mixing but also guaranteeing that simultaneously main vulcanizing agent does not vulcanize in advance because of excess Temperature of various fillers.Add the acid base equilibrium agent to guarantee the stability of sulfuration, add lubricant to guarantee the stability of its processing, improved with this production stability and qualification rate that changes series products.
Embodiment
The present invention is described in further detail below in conjunction with embodiment.
Embodiment 1
The parts by weight of each feed composition are as follows:
Chlorohydrin rubber: 80
Middle intensity hard(carbon)black: 40
Import acid base equilibrium agent DHT-4A:2
Highly-efficient lubricant SPR-66:1
Anti-incipient scorch vulcanizing agent P-15:1
Vulcanization leveller XL-21S:4.
According to above formula such as following methods, manufacture gasket:
(1) mixing for the first time: according to parts by weight, chlorohydrin rubber, carbon black, acid base equilibrium agent, lubricant and vulcanizing agent are placed in to Banbury mixer and carry out banburying for the first time, described banburying for the first time is included in 155 ℃ of binder removals; Then the rubber unvulcanizate after banburying is for the first time proceeded to mill and open for the first time refining, the described refining process of opening for the first time comprises turning refining of 3 thin-passes and after described thin-pass 7 times, below thin-pass thickness 4mm, gets the cooling rear packing of sheet.
(2) mixing for the second time: after mixing end 48h for the first time, carry out banburying to adding the partial vulcanization promoting agent to be placed on Banbury mixer in the rubber unvulcanizate after opening refining for the first time, described banburying for the second time is included in 95 ℃ of binder removals; Then the rubber unvulcanizate after banburying is proceeded to mill and open for the second time refining, the described refining process of opening for the second time comprises turning refining of 4 thin-passes and after described thin-pass 5 times, below thin-pass thickness 4mm, gets the cooling rear packing of sheet.
(3) filter also press-formed part.Adopt Barwell preformer, premolding head to pack into after 120 mesh filter screens, reinstall the premolding fixture, whole equipment adopts circulating water cooling system, sizing material is controlled in the scope of 70 ℃, guarantees rubber unvulcanizate safety in whole process.
(4) profiled member is put into to mould and carried out primary vulcanization, the temperature of described primary vulcanization is 160 ℃, and the time is 270s, and pressure is 200kgf/cm
2Then, insert in baking oven and vulcanize for the second time, the described temperature of sulfuration for the second time is 220 ℃, and the time is 16h.
(5) profiled member after post cure first is processed into to the tubular work in-process, then according to the gasket height, cut, product inner circle size tolerance requirements is wide, mould can guarantee, the excircle dimension tolerance is narrow, and mould can't guarantee size, adopts and first is worked into the high limit of size, then with the rectangular pad milling drum, polish to foreign round, allow size in rational scope.Finally detect and be packaged to be finished product.
Embodiment 1 detected result is as follows:
Remarks: laboratory temperature: 23 ℃ of relative humidity: 50%
Embodiment 2
The parts by weight of each feed composition are as follows:
Chlorohydrin rubber: 100
Middle intensity hard(carbon)black: 45
Import acid base equilibrium agent DHT-4A:5
Highly-efficient lubricant SPR-66:1.8
Anti-incipient scorch vulcanizing agent P-15:2
Vulcanization leveller XL-21S:3.
According to above formula such as following methods, manufacture gasket:
(1) mixing for the first time: according to parts by weight, chlorohydrin rubber, carbon black, acid base equilibrium agent, lubricant and vulcanizing agent are placed in to Banbury mixer and carry out banburying for the first time, described banburying for the first time is included in 160 ℃ of binder removals; Then the rubber unvulcanizate after banburying is for the first time proceeded to mill and open for the first time refining, the described refining process of opening for the first time comprises turning refining of 3 thin-passes and after described thin-pass 8 times, below thin-pass thickness 4mm, gets the cooling rear packing of sheet.
(2) mixing for the second time: after mixing end 48h for the first time, carry out banburying to adding the partial vulcanization promoting agent to be placed on Banbury mixer in the rubber unvulcanizate after opening refining for the first time, described banburying for the second time is included in 100 ℃ of binder removals; Then the rubber unvulcanizate after banburying is proceeded to mill and open for the second time refining, the described refining process of opening for the second time comprises turning refining of 3 thin-passes and after described thin-pass 6 times, below thin-pass thickness 4mm, gets the cooling rear packing of sheet.
(3) filter also press-formed part.Adopt Barwell preformer, premolding head to pack into after 120 mesh filter screens, reinstall the premolding fixture, whole equipment adopts circulating water cooling system, sizing material is controlled in the scope of 80 ℃, guarantees rubber unvulcanizate safety in whole process.
(4) profiled member is put into to mould and carried out primary vulcanization, the temperature of described primary vulcanization is 162 ℃, and the time is 310s, and pressure is 210kgf/cm
2Then, insert in baking oven and vulcanize for the second time, the described temperature of sulfuration for the second time is 230 ℃, and the time is 18h.
(5) profiled member after post cure first is processed into to the tubular work in-process, then according to the sealing-ring height, cut, product inner circle size tolerance requirements is wide, mould can guarantee, the excircle dimension tolerance is narrow, and mould can't guarantee size, adopts and first is worked into the high limit of size, then with the rectangular loop milling drum, polish to foreign round, allow size in rational scope.Finally detect and be packaged to be finished product.
The detected result of embodiment 2 is as follows:
Remarks: laboratory temperature: 23 ℃ of relative humidity: 50%
Embodiment 3
The parts by weight of each feed composition are as follows:
Chlorohydrin rubber: 120
Middle intensity hard(carbon)black: 40
Import acid base equilibrium agent DHT-4A:2
Highly-efficient lubricant SPR-66:1.8
Anti-incipient scorch vulcanizing agent P-15:1.5
Vulcanization leveller XL-21S:3.5.
According to above formula such as following methods, manufacture gasket:
(1) mixing for the first time: according to parts by weight, chlorohydrin rubber, carbon black, acid base equilibrium agent, lubricant and vulcanizing agent are placed in to Banbury mixer and carry out banburying for the first time, described banburying for the first time is included in 165 ℃ of binder removals; Then the rubber unvulcanizate after banburying is for the first time proceeded to mill and open for the first time refining, the described refining process of opening for the first time comprises turning refining of 4 thin-passes and after described thin-pass 8 times, below thin-pass thickness 4mm, gets the cooling rear packing of sheet.
(2) mixing for the second time: after mixing end 48h for the first time, carry out banburying to adding the partial vulcanization promoting agent to be placed on Banbury mixer in the rubber unvulcanizate after opening refining for the first time, described banburying for the second time is included in 105 ℃ of binder removals; Then the rubber unvulcanizate after banburying is proceeded to mill and open for the second time refining, the described refining process of opening for the second time comprises turning refining of 3 thin-passes and after described thin-pass 6 times, below thin-pass thickness 4mm, gets the cooling rear packing of sheet.
(3) filter also press-formed part.Adopt Barwell preformer, premolding head to pack into after 120 mesh filter screens, reinstall the premolding fixture, whole equipment adopts circulating water cooling system, sizing material is controlled in the scope of 70～80 ℃, guarantees rubber unvulcanizate safety in whole process.
(4) profiled member is put into to mould and carried out primary vulcanization, the temperature of described primary vulcanization is 165 ℃, and the time is 330s, and pressure is 220kgf/cm
2Then, insert in baking oven and vulcanize for the second time, the described temperature of sulfuration for the second time is 240 ℃, and the time is 20h.
(5) profiled member after post cure first is processed into to the tubular work in-process, then according to the gasket height, cut, product inner circle size tolerance requirements is wide, mould can guarantee, the excircle dimension tolerance is narrow, and mould can't guarantee size, adopts and first is worked into the high limit of size, then with the rectangular loop milling drum, polish to foreign round, allow size in rational scope.Finally detect and be packaged to be finished product.
The detected result of embodiment 3 is as follows:
Remarks: laboratory temperature: 23 ℃ of relative humidity: 50%
From three kinds of detected results of implementing leading case, embodiment 2 meets standard-required fully, therefore selection scheme 2 is this formula for a product.The present invention has following advantage:
1. overcome domestic rubber seal cushion material can not simultaneous adaptation high temperature (more than 150 ℃) and oil resistance all good, and price is compared lower problem, according to the present invention's mixing sizing material of filling a prescription, meet the performances such as high temperature resistant, oil resistant fully, manufacturability has also reached the leading level in the world;
2. accumulate the development Experience of developing the chlorohydrin rubber that possesses excellent processing characteristics and satisfactory stability, broken the technical monopoly of external high performance material;
3. the braking pressure charging valve, with the exploitation of gasket, has substituted import parts, has been that the well-known brake system of car manufacturer of home and overseas is supporting at present, when saving a large amount of foreign exchanges, for country creates foreign exchange earnings;
4. improve the core competitiveness of China's automobile industry, accelerated the transformation of China from automobile consumption big country to automobile production big country.
Should be noted that and understand, in the situation that do not break away from the spirit and scope of accompanying claim the present invention for required protection, can make to the present invention of foregoing detailed description various modifications and improvement.Therefore, the scope of claimed technical scheme is not subjected to the restriction of given any specific exemplary teachings.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, do not mean that namely the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.The person of ordinary skill in the field should understand, any improvement in the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (9)
1. an automobile brake pressure charging valve gasket material, is characterized in that, the parts by weight of each feed composition are as follows:
Chlorohydrin rubber: 80～120
Carbon black: 35～55
Acid base equilibrium agent: 3～5
Lubricant: 1～3
Vulcanizing agent: 1.5～4
Vulcanization leveller: 1～4.
2. a kind of automobile brake pressure charging valve gasket material according to claim 1, is characterized in that, the parts by weight of each feed composition are as follows:
Chlorohydrin rubber: 90～110
Carbon black: 40～55
Acid base equilibrium agent: 4～5
Lubricant: 1～3
Vulcanizing agent: 1.5～3
Vulcanization leveller: 1～3.
3. a kind of automobile brake pressure charging valve gasket material according to claim 1, is characterized in that, the parts by weight of each feed composition are as follows:
Chlorohydrin rubber: 100
Carbon black: 45
Acid base equilibrium agent: 5
Lubricant: 1.8
Vulcanizing agent: 2
Vulcanization leveller: 3.
4. a right to use requires 1 described a kind of automobile brake pressure charging valve with gasket material, to manufacture the method for gasket, it is characterized in that, comprises the following steps:
(1) mixing for the first time: as according to described parts by weight, chlorohydrin rubber, carbon black, acid base equilibrium agent, lubricant and vulcanizing agent to be placed in to Banbury mixer and to carry out banburying for the first time; Rubber unvulcanizate after banburying is for the first time proceeded to mill and open for the first time refining;
(2) mixing for the second time: as to carry out banburying for the second time to adding vulcanizing agent to be placed on Banbury mixer in the rubber unvulcanizate after opening refining for the first time; Rubber unvulcanizate after banburying is for the second time proceeded to mill and open for the second time refining;
(3) rubber unvulcanizate that will open for the second time after refining filters and is compressed to profiled member;
(4) profiled member is put into to mould and carried out primary vulcanization, then insert in baking oven and vulcanize for the second time;
(5) profiled member after post cure successively is processed into to work in-process, cutting, obtains finished product.
5. method according to claim 4, is characterized in that, described banburying for the first time is included in 155～165 ℃ of binder removals; The described refining process of opening for the first time comprises turning refining of 2～4 thin-passes and after described thin-pass 7 times or 8 times.
6. method according to claim 5, is characterized in that, described banburying for the second time is included in 95～105 ℃ of binder removals; The described refining process of opening for the second time comprises turning refining of 2～4 thin-passes and after described thin-pass 5 times or 6 times.
7. method according to claim 4, is characterized in that, the temperature of described primary vulcanization is 160～165 ℃, and the time is 270～330s, and pressure is 200～220kgf/cm
2The described temperature of sulfuration for the second time is 220～240 ℃, and the time is 16～20h.
8. method according to claim 4, is characterized in that, described for the second time mixing after mixing for the first time at least 48h carry out.
9. method according to claim 6, is characterized in that, the described thin-pass thickness of opening for the first time refining and opening refining for the second time is below 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310342190.0A CN103408916B (en) | 2013-08-07 | 2013-08-07 | Sealing gasket material for automobile braking pressure increasing valve and manufacturing method of sealing gasket |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310342190.0A CN103408916B (en) | 2013-08-07 | 2013-08-07 | Sealing gasket material for automobile braking pressure increasing valve and manufacturing method of sealing gasket |
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| Publication Number | Publication Date |
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| CN103408916A true CN103408916A (en) | 2013-11-27 |
| CN103408916B CN103408916B (en) | 2015-07-22 |
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| CN201310342190.0A Active CN103408916B (en) | 2013-08-07 | 2013-08-07 | Sealing gasket material for automobile braking pressure increasing valve and manufacturing method of sealing gasket |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013008A (en) * | 2012-11-25 | 2013-04-03 | 马鞍山市中澜橡塑制品有限公司 | Oil cylinder sealing gasket sizing material and preparation method thereof |
| CN103073872A (en) * | 2011-10-25 | 2013-05-01 | 比亚迪股份有限公司 | Chlorohydrin rubber composition and fuel oil rubber tube |
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- 2013-08-07 CN CN201310342190.0A patent/CN103408916B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073872A (en) * | 2011-10-25 | 2013-05-01 | 比亚迪股份有限公司 | Chlorohydrin rubber composition and fuel oil rubber tube |
| CN103013008A (en) * | 2012-11-25 | 2013-04-03 | 马鞍山市中澜橡塑制品有限公司 | Oil cylinder sealing gasket sizing material and preparation method thereof |
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Address after: 242300 Ningguo economic and Technological Development Zone, Anhui, Xuancheng Patentee after: The shape of daetwyler sealing technology (Anhui) Co. Ltd. Address before: 242300 Ningguo Xuancheng economic and Technological Development Zone Anhui Anhui Ding Pu automobile sealing parts Co., Ltd. Patentee before: Anhui Zhongding Taike Automotive Sealing Member Co., Ltd. |