CN105437431A - Method for determining vulcanizing time of tire rubber - Google Patents
Method for determining vulcanizing time of tire rubber Download PDFInfo
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- CN105437431A CN105437431A CN201510747035.6A CN201510747035A CN105437431A CN 105437431 A CN105437431 A CN 105437431A CN 201510747035 A CN201510747035 A CN 201510747035A CN 105437431 A CN105437431 A CN 105437431A
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- time
- sulfuration
- recovery
- cure
- reaction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/049—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using steam or damp
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The invention discloses a method for determining the vulcanizing time of tire rubber. The method can assist each factory in building a vulcanizing time management platform, the key points in the vulcanizing process can be effectively controlled according to the needs for improving the vulcanizing process of each factory, later vulcanizing temperature measuring data are analyzed according to the collection of an early-stage rubber basic database, and therefore the purposes of optimizing the vulcanizing time, the vulcanizing procedure and formula compatibility are achieved.
Description
Technical field
The present invention relates to tire manufacturing art, particularly relate to a kind of method of preferred tyre rubber vulcanizing technology.
Background technology
Tyre vulcanization is a most important step in tire production, the correct selected end properties that directly will affect tire of vulcanization process condition.Tire is a kind of typical thick rubber products, and its constituent material is complicated, version is various, in tire industry, how correctly to calculate equivalent vulcanization time, thus determines that tire sulfurizing time ensures one of high performance essential condition of tire.
Determine the method for tyre vulcanizing time, the method industrially used on a large scale both at home and abroad at present comprises thermocouple thermometry, gas Vesicular protein and both combined techniqueses to determine the sulfuration process time, existing sulfuration process time defining method, exist following not enough: thermocouple thermometry becomes characteristic research to sulfuration sulphur and uses not comprehensive, the impact of sulfuration initial time in tire vulcanization process is not calculated and is controlled, and this has larger impact to the setting of the calculating of final state of cure (vulcanization) and technique step sequence; There is limitation in the application of gas Vesicular protein, is only to deduct marks to tire solution to analyse, and in cure time setting, accuracy is poor; The degree of recovery and recovery, comparatively large on the impact of end properties, but be improve recovery by the method for interpolation auxiliary agent mostly in prior art, also there is not the non-additive technology improved for recovery degree at present.
US2005124775A1 discloses a kind of method improving the reversion resistance of the polymer of peroxide curable, polymerization single polymerization monomer between at least one or under existing two isoolefine base benzene compounds, the polymer of this peroxide curable comprises the following polymer of at least one: this polymer contains the repetitive derived from least one isomonoolefin monomer and at least one aromatic divinyl monomers.
The present inventor completes the present invention under Mount Taishan scholar's construction project specific project expenditure is subsidized, to determining that the method for rubber vulcanization time is improved, optimize the defining method of rubber vulcanization time, improve product quality, express thanks to Mount Taishan scholar's construction project at this.
Summary of the invention
The present invention is based on sulfuration rheological behavior curve feature, advanced computational methods are used all to include the whole course of reaction of sulfuration in management, make up the deficiencies in the prior art, and set up a corresponding database, constantly perfect by database, form the cure time management platform being applicable to each company, positive improvement effect is played in the optimization of foundation to the setting of new sulfuration process and old sulfuration process of this platform, and then improves the properties of tire product.By reaching following effect to the research of whole sulfidation: process the sulfuration rheological curve under different temperatures, improve the counting accuracy of activation energy, equivalent vulcanization time; Measured and the research of sulfuration initial time by bubble point, the setting of sequence time is walked to sulfuration each stage and the sulfuration process time is optimized; By the research to recovery, improve the sulfuration matching of end properties and each glue number formula.
The invention provides a kind of method optimizing rubber for tire sulfidation, comprise the following steps: 1) sulfidation database is set up to the different sizing compound formula of enterprise, according to the rheological data of the sizing material of record, calculate different temperatures reaction rate, sulfuration activation energy, reaction initial time, recovery reaction rate, recovery reaction activity, and record sizing material blow point, by these data building databases; 2) utilize tire to sunken cord the temperature data of on vulcanizer the real time measure, calculate and indicate the sulphidity of vulcanization reaction initial time, blow point and each timing node, sulfuration safety time and final degree of reverting; 3) these data indicated in results and database are compared, and optimized and revised the time setting of the setting of high-temperature steam time, high pressure nitrogen or superheated water, also can adjust sizing compound formula by comparison, to obtain the Vulcanization Process of Rubber of optimum by comparison.
The foundation of described sulfidation database utilizes cure kinetics reactional equation to derive rate of cure K at each temperature and sulfuration initial time t0, and recycling Arrhenius law calculates corresponding activation energy and other vulcanization reaction characteristic parameter.
Described method also may be used for the adjustment to recovery degree, by the process to sulfuration rheological behavior curve, the relevant parameter of recovery is imported cure time management platform, by the calculating to recovery degree, cure time and formula matching is optimized.
The technology of the present invention compared with prior art has following characteristics: the management 1) adding bubble point state of cure (vulcanization) imports; 2) management adding sulfuration initial time t0 imports; 3) calculating adding recovery degree imports.Mostly manage for sulfuration initial time in conventional art, normally select higher temperature value as the starting point calculated when processing thermocouple temperature measurement data, subjective selection is larger on result of calculation impact; Traditional gas Vesicular protein confirms that cure time accuracy is poor, larger to the waste of tire during experiment; Recovery degree manages.
The present invention can reach following technique effect: to sulfuration process step sequence be set with sufficient directive function, more reasonably set the time of steam and nitrogen according to the difference of tire specification size, make sulfuration process time shorten, improving productivity 5% ~ 10%; Recovery phenomenon is effectively controlled, has active influence to aspects such as the sensitiveness that high speed performance and belt are separated.
Accompanying drawing explanation
Accompanying drawing 1 is schematic diagram of the present invention
Detailed description of the invention
Embodiment 1
1) rheological parameter database is set up to all sizing materials of certain enterprise, and database is upgraded according to external influence factor (seasonal variations, formula change, raw material supplier change) and manages.According to the rheological data of the sizing material of record, calculate different temperatures reaction rate, sulfuration activation energy, reaction initial time, recovery reaction rate, recovery reaction activity, the result consistent with actual production situation can be obtained according to these rheological parameters when blow point measurement and calculation and tire sunken cord thermometric.
The mensuration of sizing material blow point need by special equipment, to sunken cord thermometric, process, draw the state of cure (vulcanization) of blow point, draw the foaming degree of each position rubber vulcanization point to the section after thermometric and temperature measurement data sizing material of the same race at different-thickness place.
2) tire is utilized to sunken cord the temperature data of on vulcanizer the real time measure, calculate and indicate the sulphidity of vulcanization reaction initial time, blow point and each timing node, sulfuration safety time and final degree of reverting, by can instruct the adjustment of sulfuration process to the analysis of result of calculation.Example:
Below the technique adjustment contrast that certain company carries out 185/60R14 specification:
Adjust to this specification sunken cord thermometric confirm:
Compared by the data in result of calculation listed by upper table and database, can draw:
1, the state of cure (vulcanization) of all points for measuring temperature when row pressure is all greater than the blow point (meeting the basic demand of sulfuration process setting) of corresponding sizing material;
2, the initial time of vulcanization reaction is all greater than the high steam time, ensureing that vulcanization reaction starts is carry out in the high pressure nitrogen stage compactness that ensures between gas producing formation, simultaneously meet vulcanization reaction start be the prerequisite of carrying out at high pressure nitrogen under, can suitably increase the high steam time, shorten sulfuration total time improving production efficiency;
3, carry out assessment to the degree of reverting of the responsive sizing material (as belt compound) that reverts to guarantee within management standard.
Claims (3)
1. the invention provides a kind of method optimizing rubber for tire sulfidation, comprise the following steps: 1) sulfidation database is set up to the different sizing compound formula of enterprise, according to the rheological data of the sizing material of record, calculate different temperatures reaction rate, sulfuration activation energy, reaction initial time, recovery reaction rate, recovery reaction activity, and record sizing material blow point, by these data building databases; 2) utilize tire to sunken cord the temperature data of on vulcanizer the real time measure, calculate and indicate the sulphidity of vulcanization reaction initial time, blow point and each timing node, sulfuration safety time and final degree of reverting; 3) these data indicated in results and database are compared, and optimized and revised the time setting of the setting of high-temperature steam time, high pressure nitrogen or superheated water, also can adjust sizing compound formula by comparison, to obtain the Vulcanization Process of Rubber of optimum by comparison.
2. the method for claim 1, it is characterized in that: the foundation of described sulfidation database utilizes cure kinetics reactional equation to derive rate of cure K at each temperature and sulfuration initial time t0, and recycling Arrhenius law calculates corresponding activation energy and other vulcanization reaction characteristic parameter.
3. the method for claim 1 is used for the application to the adjustment of recovery degree, by the process to sulfuration rheological behavior curve, the relevant parameter of recovery is imported cure time management platform, by the calculating to recovery degree, cure time and formula matching are optimized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510747035.6A CN105437431A (en) | 2015-11-06 | 2015-11-06 | Method for determining vulcanizing time of tire rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510747035.6A CN105437431A (en) | 2015-11-06 | 2015-11-06 | Method for determining vulcanizing time of tire rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105437431A true CN105437431A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510747035.6A Pending CN105437431A (en) | 2015-11-06 | 2015-11-06 | Method for determining vulcanizing time of tire rubber |
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| Country | Link |
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| CN (1) | CN105437431A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364228A (en) * | 2019-06-24 | 2019-10-22 | 安徽佳通乘用子午线轮胎有限公司 | A kind of tyre stock formula vulcanizing system design method and system |
| CN111999344A (en) * | 2019-05-27 | 2020-11-27 | 盐动标准技术服务(上海)有限公司 | Method for testing foaming point of rubber product |
| CN116728860A (en) * | 2023-08-15 | 2023-09-12 | 山东昊华轮胎有限公司 | Total nitrogen vulcanization method and system applied to tire |
-
2015
- 2015-11-06 CN CN201510747035.6A patent/CN105437431A/en active Pending
Non-Patent Citations (4)
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| 焦书科等: "《橡胶弹性物理及合成化学》", 31 October 2008, 中国石化出版社 * |
| 逄华等: "《全钢载重子午线轮胎硫化温度的测定》", 《轮胎工业》 * |
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| 韩雷等: "《子午线轮胎硫化温度的测定》", 《轮胎工业》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999344A (en) * | 2019-05-27 | 2020-11-27 | 盐动标准技术服务(上海)有限公司 | Method for testing foaming point of rubber product |
| CN111999344B (en) * | 2019-05-27 | 2023-11-14 | 盐动标准技术服务(上海)有限公司 | Foaming point test method for rubber product |
| CN110364228A (en) * | 2019-06-24 | 2019-10-22 | 安徽佳通乘用子午线轮胎有限公司 | A kind of tyre stock formula vulcanizing system design method and system |
| CN110364228B (en) * | 2019-06-24 | 2023-10-31 | 安徽佳通乘用子午线轮胎有限公司 | Tire sizing material formula vulcanization system design method and system |
| CN116728860A (en) * | 2023-08-15 | 2023-09-12 | 山东昊华轮胎有限公司 | Total nitrogen vulcanization method and system applied to tire |
| CN116728860B (en) * | 2023-08-15 | 2023-10-27 | 山东昊华轮胎有限公司 | Total nitrogen vulcanization method and system applied to tire |
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Application publication date: 20160330 |
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