CN103408916B - 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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- CN103408916B CN103408916B CN201310342190.0A CN201310342190A CN103408916B CN 103408916 B CN103408916 B CN 103408916B CN 201310342190 A CN201310342190 A CN 201310342190A CN 103408916 B CN103408916 B CN 103408916B
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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, particularly relate to the manufacture method of a kind of automobile brake pressure charging valve gasket material and gasket.
Background technology
Drift stop be the car enforce made in traveling slow down until stop, or make to maintain certain speed of a motor vehicle during automobile lower long slope, ensure that automobile can reliably rest on ramp, the unlikely smooth device in original place.Vacuum booster is the key device of breaking system, and pressure charging valve is the additional mechanical supercharging device in vacuum booster.Along with the enhancing of the sound of domestic automobile security legislation and people's awareness of safety, vacuum booster pressure charging valve seems more and more important, and pressure charging valve gasket is the parts of its key, pressure charging valve gasket requires energy resistance to higher temperature and wear-resisting, oil resistance simultaneously, and technical requirements is very high.Domestic traditional automobile gasket material, can not meet the performance requriements of high temperature resistant and oil resistant simultaneously and have good processing characteristics.Compared with American-European supplier, without any technical elements advantage, even if cost ratio is low abroad, general producer also dare not use.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 this material high thermal resistance is high, oil-proofness good, wear resistance is strong and processing characteristics is good.
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 efficient SPR-66 selected by lubricant, and anti-incipient scorch vulcanizing agent P-15 selected by vulcanizing agent, and vulcanization leveller selects XL-21S.The present invention can also select the same or similar raw material of character.
The present invention provides on the other hand a kind of manufacture method of automobile brake pressure charging valve gasket, and the method makes that the high thermal resistance of sealing-ring is high, oil-proofness good, wear resistance is strong and processing characteristics is good.
Use above-mentioned automobile brake pressure charging valve gasket material to manufacture a method for gasket, comprise the following steps:
(1) first time is mixing: according to parts by weight, chlorohydrin rubber, carbon black, acid base equilibrium agent, lubricant and vulcanizing agent are placed in Banbury mixer and carry out first time banburying; Rubber unvulcanizate after first time banburying is proceeded to mill to carry out first time and open refining;
(2) second time is mixing: add vulcanizing agent and be placed on Banbury mixer to opening in the rubber unvulcanizate after refining through first time and carry out second time banburying; Rubber unvulcanizate after banburying is proceeded to mill to carry out second time and open refining;
(3) second time is opened the rubber unvulcanizate after refining filter and be compressed to profiled member;
(4) profiled member is put into mould and carry out primary vulcanization, then insert in baking oven and carry out second time sulfuration;
(5) profiled member after post cure is successively carried out being processed into work in-process, cutting, obtain finished product.
Wherein, described first time banburying is included in 155 ~ 165 DEG C of binder removals; Described first time opens refining process and comprises turning refining of 2 ~ 4 thin-passes and after described thin-pass 7 times or 8 times.
Wherein, described second time banburying is included in 95 ~ 105 DEG C of binder removals; Described second time is opened refining process and is comprised 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 DEG C, and the time is 270 ~ 330s, and pressure is 200 ~ 220kgf/cm
2; The temperature of described second time sulfuration is 220 ~ 240 DEG C, and the time is 16 ~ 20h.
Wherein, described second time mixing first time mixing after at least 48h carry out.
Wherein, described first time opens the thin-pass thickness refining and open for the second time refining is below 4mm.
Automobile brake pressure charging valve gasket material of the present invention manufactures gasket material optimization of C/C composites, such that this material high thermal resistance is high, oil-proofness good, wear resistance is strong and processing characteristics is good, and cost has advantage.Vulcanizing agent first first adds by the manufacturing process of gasket, ensures good distribution effect; Mixing in two stages, not only ensure that mixing but also guaranteeing the not too high and sulfuration in advance of Yin Wendu of main vulcanizing agent simultaneously of various filler.Add the stability that acid base equilibrium agent ensures sulfuration, add lubricant and ensure its stability of processing, improve with this production stability and qualification rate that change series products.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
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.
Gasket is manufactured according to above formula such as following methods:
(1) first time is mixing: according to parts by weight, chlorohydrin rubber, carbon black, acid base equilibrium agent, lubricant and vulcanizing agent are placed in Banbury mixer and carry out first time banburying, described first time banburying is included in 155 DEG C of binder removals; Then the rubber unvulcanizate after first time banburying is proceeded to mill to carry out first time and open refining, described first time opens refining process and comprises turning refining of 3 thin-passes and after described thin-pass 7 times, thin-pass below thickness 4mm, gets packaging after sheet cooling.
(2) second time is mixing: after first time mixing ends 48h, and add partial vulcanization promoting agent and be placed on Banbury mixer to through for the first time to open in the rubber unvulcanizate after refining and carry out banburying, described second time banburying is included in 95 DEG C of binder removals; Then the rubber unvulcanizate after banburying is proceeded to mill to carry out second time and open refining, described second time is opened refining process and is comprised turning refining of 4 thin-passes and after described thin-pass 5 times, thin-pass below thickness 4mm, gets packaging after sheet cooling.
(3) also press-formed part is filtered.Adopt Barwell preformer, after premolding head loads 120 mesh filter screens, reinstall premolding fixture, whole equipment adopts circulating water cooling system, is controlled by sizing material in the scope of 70 DEG C, guarantees rubber unvulcanizate safety in whole process.
(4) profiled member is put into mould and carry out primary vulcanization, the temperature of described primary vulcanization is 160 DEG C, and the time is 270s, and pressure is 200kgf/cm
2; Then, insert in baking oven and carry out second time sulfuration, the temperature of described second time sulfuration is 220 DEG C, and the time is 16h.
(5) profiled member after post cure is first processed into tubular work in-process, then cut according to gasket height, product inner circle size tolerance requirements is wide, mould can ensure, excircle dimension tolerance is narrow, and mould cannot ensure size, adopts and is first worked into the high limit of size, then polish to foreign round with rectangular pad milling drum, 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 DEG C 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.
Gasket is manufactured according to above formula such as following methods:
(1) first time is mixing: according to parts by weight, chlorohydrin rubber, carbon black, acid base equilibrium agent, lubricant and vulcanizing agent are placed in Banbury mixer and carry out first time banburying, described first time banburying is included in 160 DEG C of binder removals; Then the rubber unvulcanizate after first time banburying is proceeded to mill to carry out first time and open refining, described first time opens refining process and comprises turning refining of 3 thin-passes and after described thin-pass 8 times, thin-pass below thickness 4mm, gets packaging after sheet cooling.
(2) second time is mixing: after first time mixing ends 48h, and add partial vulcanization promoting agent and be placed on Banbury mixer to through for the first time to open in the rubber unvulcanizate after refining and carry out banburying, described second time banburying is included in 100 DEG C of binder removals; Then the rubber unvulcanizate after banburying is proceeded to mill to carry out second time and open refining, described second time is opened refining process and is comprised turning refining of 3 thin-passes and after described thin-pass 6 times, thin-pass below thickness 4mm, gets packaging after sheet cooling.
(3) also press-formed part is filtered.Adopt Barwell preformer, after premolding head loads 120 mesh filter screens, reinstall premolding fixture, whole equipment adopts circulating water cooling system, is controlled by sizing material in the scope of 80 DEG C, guarantees rubber unvulcanizate safety in whole process.
(4) profiled member is put into mould and carry out primary vulcanization, the temperature of described primary vulcanization is 162 DEG C, and the time is 310s, and pressure is 210kgf/cm
2; Then, insert in baking oven and carry out second time sulfuration, the temperature of described second time sulfuration is 230 DEG C, and the time is 18h.
(5) profiled member after post cure is first processed into tubular work in-process, then cut according to sealing-ring height, product inner circle size tolerance requirements is wide, mould can ensure, excircle dimension tolerance is narrow, and mould cannot ensure size, adopts and is first worked into the high limit of size, then polish to foreign round with rectangular loop milling drum, 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 DEG C 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.
Gasket is manufactured according to above formula such as following methods:
(1) first time is mixing: according to parts by weight, chlorohydrin rubber, carbon black, acid base equilibrium agent, lubricant and vulcanizing agent are placed in Banbury mixer and carry out first time banburying, described first time banburying is included in 165 DEG C of binder removals; Then the rubber unvulcanizate after first time banburying is proceeded to mill to carry out first time and open refining, described first time opens refining process and comprises turning refining of 4 thin-passes and after described thin-pass 8 times, thin-pass below thickness 4mm, gets packaging after sheet cooling.
(2) second time is mixing: after first time mixing ends 48h, and add partial vulcanization promoting agent and be placed on Banbury mixer to through for the first time to open in the rubber unvulcanizate after refining and carry out banburying, described second time banburying is included in 105 DEG C of binder removals; Then the rubber unvulcanizate after banburying is proceeded to mill to carry out second time and open refining, described second time is opened refining process and is comprised turning refining of 3 thin-passes and after described thin-pass 6 times, thin-pass below thickness 4mm, gets packaging after sheet cooling.
(3) also press-formed part is filtered.Adopt Barwell preformer, after premolding head loads 120 mesh filter screens, reinstall premolding fixture, whole equipment adopts circulating water cooling system, is controlled by sizing material in the scope of 70 ~ 80 DEG C, guarantees rubber unvulcanizate safety in whole process.
(4) profiled member is put into mould and carry out primary vulcanization, the temperature of described primary vulcanization is 165 DEG C, and the time is 330s, and pressure is 220kgf/cm
2; Then, insert in baking oven and carry out second time sulfuration, the temperature of described second time sulfuration is 240 DEG C, and the time is 20h.
(5) profiled member after post cure is first processed into tubular work in-process, then cut according to gasket height, product inner circle size tolerance requirements is wide, mould can ensure, excircle dimension tolerance is narrow, and mould cannot ensure size, adopts and is first worked into the high limit of size, then polish to foreign round with rectangular loop milling drum, 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 DEG C of relative humidity: 50%
Implement the detected result of leading case from three kinds, embodiment 2 meets standard-required completely, therefore selection scheme 2 is this formula for a product.Tool of the present invention has the following advantages:
1. overcome domestic Rubber gasket material can not simultaneous adaptation high temperature (more than 150 DEG C) and oil resistance all good, and price compares lower problem, to fill a prescription mixing sizing material according to the present invention, meet high temperature resistant, resistance to wet goods performance completely, manufacturability also reaches the leading level in the world;
2. have accumulated the development Experience that exploitation possesses the chlorohydrin rubber of excellent processing characteristics and satisfactory stability, break the technical monopoly of external high performance material;
3. brake the exploitation of pressure charging valve gasket, instead of import parts, be that the well-known brake system of car manufacturer of home and overseas is supporting at present, while a large amount of foreign exchange of saving, is country's creation foreign exchange earnings;
4. improve the core competitiveness of China's automobile industry, accelerate China from automobile consumption big country to the transformation of automobile production big country.
It should be noted that and understand, when not departing from the spirit and scope of accompanying claim the present invention for required protection, various amendment and improvement can be made to the present invention of foregoing detailed description.Therefore, the scope of claimed technical scheme is not by the restriction of given any specific exemplary teachings.
Applicant states, 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, namely do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within 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, it 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, it 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. use a kind of automobile brake pressure charging valve gasket material described in claim 1 to manufacture a method for gasket, it is characterized in that, comprise the following steps:
(1) first time is mixing: according to described parts by weight, chlorohydrin rubber, carbon black, acid base equilibrium agent, lubricant and vulcanizing agent are placed in Banbury mixer and carry out first time banburying; Rubber unvulcanizate after first time banburying is proceeded to mill to carry out first time and open refining;
(2) second time is mixing: add vulcanization leveller and be placed on Banbury mixer to opening in the rubber unvulcanizate after refining through first time and carry out second time banburying; Rubber unvulcanizate after second time banburying is proceeded to mill to carry out second time and open refining;
(3) second time is opened the rubber unvulcanizate after refining filter and be compressed to profiled member;
(4) profiled member is put into mould and carry out primary vulcanization, then insert in baking oven and carry out second time sulfuration;
(5) profiled member after post cure is successively carried out being processed into work in-process, cutting, obtain finished product.
5. method according to claim 4, is characterized in that, described first time banburying is included in 155 ~ 165 DEG C of binder removals; Described first time opens refining process and 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 second time banburying is included in 95 ~ 105 DEG C of binder removals; Described second time is opened refining process and is comprised 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 DEG C, and the time is 270 ~ 330s, and pressure is 200 ~ 220kgf/cm
2; The temperature of described second time sulfuration is 220 ~ 240 DEG C, and the time is 16 ~ 20h.
8. method according to claim 4, is characterized in that, described second time mixing first time mixing after at least 48h carry out.
9. method according to claim 6, is characterized in that, it is below 4mm that described first time opens the thin-pass thickness refining and open for the second time refining.
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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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|---|---|---|---|
| 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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| CN103408916A CN103408916A (en) | 2013-11-27 |
| CN103408916B true CN103408916B (en) | 2015-07-22 |
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| 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 |
| CN103013008B (en) * | 2012-11-25 | 2015-10-21 | 马鞍山市中澜橡塑制品有限公司 | A kind of cylinder seal pad 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. |