CN114360658A - Method, application, equipment and program product for calculating total reaction degree of white carbon black reinforced sizing material - Google Patents
Method, application, equipment and program product for calculating total reaction degree of white carbon black reinforced sizing material Download PDFInfo
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- CN114360658A CN114360658A CN202111624692.3A CN202111624692A CN114360658A CN 114360658 A CN114360658 A CN 114360658A CN 202111624692 A CN202111624692 A CN 202111624692A CN 114360658 A CN114360658 A CN 114360658A
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- carbon black
- white carbon
- internal mixer
- rubber
- reaction
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000006229 carbon black Substances 0.000 title claims abstract description 47
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 title claims abstract description 36
- 238000004513 sizing Methods 0.000 title description 4
- 229920001971 elastomer Polymers 0.000 claims abstract description 47
- 239000005060 rubber Substances 0.000 claims abstract description 47
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 23
- 238000002444 silanisation Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 230000035484 reaction time Effects 0.000 claims abstract description 6
- 238000004364 calculation method Methods 0.000 claims abstract description 4
- 238000004590 computer program Methods 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 239000011593 sulfur Substances 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 150000001336 alkenes Chemical class 0.000 claims description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 3
- 238000006884 silylation reaction Methods 0.000 claims description 3
- 244000043261 Hevea brasiliensis Species 0.000 claims description 2
- 239000005062 Polybutadiene Substances 0.000 claims description 2
- 239000012190 activator Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229920003052 natural elastomer Polymers 0.000 claims description 2
- 229920001194 natural rubber Polymers 0.000 claims description 2
- 229920002857 polybutadiene Polymers 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 2
- 229920006285 olefinic elastomer Polymers 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of intelligent design and application in the tire industry, in particular to a method, application, equipment and program product for calculating the total reaction degree of a white carbon black reinforced rubber material. A method for calculating the total reaction degree of white carbon black reinforcing rubber materials in an internal mixer and a lower auxiliary machine comprises the following steps of calculating the total reaction degree of white carbon black and a silane coupling agent in the white carbon black reinforcing rubber materials in the internal mixer and the lower auxiliary machine, and calculating the final total reaction effect Ha according to a calculation formula: ha =9.58-0.0170 xdt-0.00242 xtt-0.0146 xrs; the method takes the white carbon black and the silane coupling agent which are generated in the lower auxiliary machine into consideration. Defining a reaction parameter which can be compatible with the silanization of the internal mixer and the lower auxiliary machine. Under the guidance of the parameter, the reaction time of the internal mixer and the lower auxiliary machine can be regulated and controlled, the aim of keeping the total silanization reaction rate constant is achieved, and the quality of the produced rubber material is more stable.
Description
Technical Field
The invention relates to the technical field of intelligent design and application in the tire industry, in particular to a method, application, equipment and program product for calculating the total reaction degree of a white carbon black reinforced rubber material.
Background
The white carbon black is applied to tread rubber of the tire, and has the effects of improving wet land gripping and reducing rolling resistance. However, hydrophilic white carbon black is difficult to disperse in lipophilic rubber. Therefore, silane coupling agents are often added into the tread formula to improve the lipophilicity of the white carbon black. The chemical reaction of the white carbon black and the silane coupling agent needs to be carried out at a certain temperature and time. The degree of reaction between the two, or efficiency, is critical to the overall processing of the tread band.
In patent CN201710828265.4, a method for calculating the reaction rate of silica and silane coupling agent is invented. In this invention, the rate of silylation reaction in the compound was analyzed and calculated using a Rubber Processing Analyzer (RPA). However, this method has disadvantages: (1) although quantitative reaction rate can be obtained by using the method, the method cannot be used for controlling the product quality; (2) in the specification and the application example of the invention, only the reaction time of the white carbon black and the silane coupling agent in the internal mixer is considered, and the continuous reaction of the rubber material after entering the open mill equipment of the lower auxiliary machine after the rubber material is discharged at high temperature is not considered; (3) in the application example of the invention, the physical shearing of the sizing material by the rotor of the internal mixer and the open mill of the lower auxiliary machine is not considered.
Disclosure of Invention
Compared with the patent CN201710828265.4, the invention provides a method for calculating the total reaction degree of white carbon black reinforced rubber materials in an internal mixer and a lower auxiliary machine, and the method additionally considers the white carbon black and a silane coupling agent which occur in the lower auxiliary machine. Defining a reaction parameter which can be compatible with the silanization of the internal mixer and the lower auxiliary machine. Under the guidance of the parameter, the reaction time of the internal mixer and the lower auxiliary machine can be regulated and controlled, the aim of keeping the total silanization reaction rate constant is achieved, and the quality of the produced rubber material is more stable.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for calculating the total reaction degree of white carbon black reinforcing rubber materials in an internal mixer and a lower auxiliary machine comprises the following steps of calculating the total reaction degree of white carbon black and a silane coupling agent in the white carbon black reinforcing rubber materials in the internal mixer and the lower auxiliary machine, and calculating the final total reaction effect Ha according to a calculation formula:
Ha＝9.58-0.0170×Dt-0.00242×Tt-0.0146×Rs；
wherein Dt is the unit temperature of the silanization reaction in an internal mixer, and Dt is more than or equal to 100 and less than or equal to 170; tt is the total reaction time of the rubber material in the internal mixer and the upper auxiliary machine at the silylation reaction temperature, and the unit is s, wherein Tt is more than or equal to 50 and less than or equal to 180; rs is the unit of the rotating speed of the lower auxiliary machine open mill and is c/min, and Rs is more than or equal to 30 and less than or equal to 40.
Preferably, the white carbon black reinforced rubber compound comprises 100 parts of olefin rubber, and at least 40 parts of white carbon black and a sulfur-containing silane coupling agent, wherein the usage amount of the sulfur-containing silane coupling agent is between 5% and 15% of the usage amount of the white carbon black.
Preferably, the olefin rubber is one or more of natural rubber, butadiene rubber and styrene-butadiene rubber; the sulfur-containing silane coupling agent is Si69, or Si75, or a mixture of the two.
Preferably, the silica reinforcing compound should also contain other necessary activators and other curing agents.
Preferably, the method is implemented in an internal mixer, the internal mixer controls the silanization reaction of the white carbon black and the silane coupling agent at constant temperature, and the internal mixer directly discharges rubber after the silanization reaction is finished; the rubber material enters a lower auxiliary machine which consists of an open mill with a certain rotating speed and an extrusion tablet press.
Further, the invention also discloses application of the final reaction total effect Ha obtained by the method in evaluation of the dispersibility of the white carbon black in the sizing material, wherein the smaller the calculated Ha and Ha value is, the better the final dispersibility of the white carbon black is.
Further, the invention also discloses application of the final reaction total effect Ha obtained by the method in controlling the performance of the rubber material in the production process of the carbon black reinforced rubber material, so that Ha is ensured to be constant, and the performance of the rubber material in each car is basically close to that of the rubber material in each car by adjusting Dt, Tt and Rs.
Further, the invention also discloses a computer device comprising a memory, a processor and a computer program stored on the memory, wherein the processor executes the computer program to realize the method.
Further, the present invention also discloses a computer readable storage medium having stored thereon a computer program or instructions which, when executed by a processor, implement the method.
Further, the invention also discloses a computer program product comprising a computer program or instructions which, when executed by a processor, implement the method.
According to the technical scheme, the calculated Ha is smaller, and the final dispersity of the white carbon black is better. And the Ha value has good linear relation with the elastic modulus under small strain measured by RPA. The correlation coefficient reached 0.83 (as in fig. 1). When Ha is constant, the physical dispersion and chemical reaction of the white carbon black in the rubber material of each car are constant, and the product is uniform and stable. In the production process, as long as Ha is ensured to be constant, even though Dt, Tt and Rs are adjusted, the performances of the rubber material of each car are basically similar.
Drawings
FIG. 1 is a plot of calculated Ha as a function of the modulus of elasticity of the cement at 0.28% using RPA. Test conditions for RPA: temperature 60 ℃, frequency 20Hz, strain sweep: from 0.28% to 42%.
Detailed Description
The following describes a detailed embodiment of the present invention with reference to the accompanying drawings.
A method for calculating the total reaction degree of white carbon black reinforced rubber material in an internal mixer and a lower auxiliary machine comprises the following steps:
(1) setting the applicable range: tire tread rubber containing white carbon black; the formula needs to contain a sulfur-containing silane coupling agent; the reaction of the white carbon black and the silane coupling agent does not exceed the highest reaction temperature of the white carbon black and the silane coupling agent, namely below 170 ℃.
(2) Several key parameters are defined, and the conditions that the parameters must satisfy: the silanization reaction temperature in the internal mixer is equal to the rubber discharge temperature, the parameter is Dt, the unit ℃ is 100-170; at the silanization reaction temperature, the total reaction time of the rubber material in the internal mixer and the upper auxiliary machine is Tt with the unit of s, and Tt is more than or equal to 50 and less than or equal to 180; the sum of the shearing forces to which the white carbon black is subjected at the internal mixer and the lower auxiliary mill, which determine the physical dispersion of the white carbon black in the rubber, is defined in relation to the rotation speed of the lower auxiliary mill, in addition to the chemical reaction of the white carbon black and the silane coupling agent. The rotating speed of the lower auxiliary machine open mill is expressed as the rotating speed of the open mill per minute, the parameter is Rs, the unit is c/min, and Rs is more than or equal to 30 and less than or equal to 40;
(3) the final calculation result, the total reaction effect, is defined as the parameter Ha. The method comprises two parts, wherein the first part is the chemical reaction degree of the white carbon black and the silane coupling agent, and the second part is the total physical shearing of the white carbon black subjected to the rotor of the internal mixer and the open mill.
(4) The final reaction total effect Ha is calculated by the formula:
Ha＝9.58-0.0170×Dt-0.00242×Tt-0.0146×Rs。
in the test example of the invention, the invention adopts a series once method internal mixer, the rotor speed of the internal mixer is controlled to be 40-60rpm, the upper ram pressure is controlled to be 50-60N/cm2, and the cooling water temperature of the internal mixer is controlled to be 30-40 ℃, and the method comprises the following steps:
(1) the process setting of the internal mixer is as follows:
1) adding rubber, white carbon black, a silane coupling agent, zinc oxide and stearic acid, and pressing the top bolt for 30 seconds;
2) lifting the top plug, adding white carbon black (20-40%), and keeping for 10 seconds;
3) pressing a top bolt to heat the rubber material to 100 ℃;
4) lifting the top plug, adding aromatic oil, and keeping for 5 seconds;
5) pressing a top bolt to heat the rubber material to Td;
6) pressing a top bolt to enable the rubber material to be mixed for T1 seconds at a constant temperature under Td;
7) discharging the rubber material to a lower auxiliary machine.
(2) The following auxiliary machine process settings:
1) the rotational speed of the open mill is Rs
The time from the falling of the gum material onto the mill to the discharge of the pellets was T2.
T1+T2＝Tt
(3) Calculating Ha according to formula
Ha＝9.58-0.0170×Dt-0.00242×Tt-0.0146×Rs。
Several computing embodiments
The properties of the compounds per car are substantially similar (G 'measured by RPA) even when Dt, Tt, Rs are adjusted during production, as long as Ha is guaranteed to be substantially constant, e.g. between 6.10 and 6.20'0.28％Characterization). As in the table below.
| Td(℃) | Tt(s) | Rs(c/min) | Ha | G’0.25％(KPa) | |
| Example 6 | 155 | 150 | 33 | 6.10 | 1500 |
| Example 3 | 150 | 150 | 33 | 6.19 | 1522 |
| Example 9 | 160 | 100 | 33 | 6.14 | 1535 |
| Example 12 | 165 | 50 | 33 | 6.17 | 1486 |
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including any reference to the above-mentioned embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for calculating the total reaction degree of white carbon black reinforced rubber materials in an internal mixer and a lower auxiliary machine is characterized in that the method calculates the total reaction degree of white carbon black and a silane coupling agent in the white carbon black reinforced rubber materials in the internal mixer and the lower auxiliary machine, and a calculation formula of the final reaction total effect Ha is as follows:
Ha=9.58-0.0170×Dt-0.00242×Tt-0.0146×Rs；
wherein Dt is the unit temperature of the silanization reaction in an internal mixer, and Dt is more than or equal to 100 and less than or equal to 170; tt is the total reaction time of the rubber material in the internal mixer and the upper auxiliary machine at the silylation reaction temperature, and the unit is s, wherein Tt is more than or equal to 50 and less than or equal to 180; rs is the unit of the rotating speed of the lower auxiliary machine open mill and is c/min, and Rs is more than or equal to 30 and less than or equal to 40.
2. The method of claim 1, wherein the silica reinforcing compound comprises 100 parts of olefinic rubber and at least 40 parts of silica and the sulfur-containing silane coupling agent, wherein the amount of the sulfur-containing silane coupling agent is between 5% and 15% of the amount of silica.
3. The method for calculating the total reaction degree of the white carbon black reinforced rubber material in the internal mixer and the lower auxiliary machines according to claim 1, wherein the olefin rubber is one or more of natural rubber, butadiene rubber and styrene butadiene rubber; the sulfur-containing silane coupling agent is Si69, or Si75, or a mixture of the two.
4. The method of claim 1 wherein the silica reinforcing compound further comprises other activators and other curatives as necessary.
5. The method for calculating the total reaction degree of the white carbon black reinforced rubber material in the internal mixer and the lower auxiliary machines according to claim 1, characterized in that the method is implemented in the internal mixer, the internal mixer controls the silanization reaction of the white carbon black and the silane coupling agent by using a constant temperature, and the internal mixer directly discharges rubber after the silanization reaction is finished; the rubber material enters a lower auxiliary machine which consists of an open mill with a certain rotating speed and an extrusion tablet press.
6. The application of the total final reaction effect Ha obtained by the method of any one of claims 1 to 5 in evaluating the dispersibility of the white carbon black in the rubber compound is disclosed, wherein the calculated Ha and Ha values are smaller, and the final dispersibility of the white carbon black is better.
7. The use of the total effect Ha of the final reaction obtained by the process according to any one of claims 1 to 5 for controlling the properties of the rubber compound during the production of carbon black reinforced rubber compounds, ensuring constant Ha, and adjusting Dt, Tt and Rs so that the properties of the rubber compound on each car are substantially similar.
8. A computer device comprising a memory, a processor and a computer program stored on the memory, wherein the processor executes the computer program to implement the method of any one of claims 1 to 5.
9. A computer-readable storage medium, on which a computer program or instructions are stored, which, when executed by a processor, carries out the method of any one of claims 1 to 5.
10. A computer program product comprising a computer program or instructions, characterized in that the computer program or instructions, when executed by a processor, implements the method of any one of claims 1 to 5.
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| CN202111624692.3A CN114360658B (en) | 2021-12-28 | Method, application, equipment and program product for calculating total reaction degree of white carbon black reinforced sizing material |
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| CN202111624692.3A CN114360658B (en) | 2021-12-28 | Method, application, equipment and program product for calculating total reaction degree of white carbon black reinforced sizing material |
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| CN114360658A true CN114360658A (en) | 2022-04-15 |
| CN114360658B CN114360658B (en) | 2024-06-25 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012121942A (en) * | 2010-12-06 | 2012-06-28 | Sumitomo Rubber Ind Ltd | Rubber composition and method for producing the same |
| CN107478781A (en) * | 2017-09-14 | 2017-12-15 | 中策橡胶集团有限公司 | A kind of detection method of white carbon and silane coupler Silanization reaction degree |
| CN113834903A (en) * | 2021-08-17 | 2021-12-24 | 中策橡胶集团有限公司 | Method for detecting degree of silanization reaction of white carbon black and silane coupling agent in sizing material and application |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012121942A (en) * | 2010-12-06 | 2012-06-28 | Sumitomo Rubber Ind Ltd | Rubber composition and method for producing the same |
| CN107478781A (en) * | 2017-09-14 | 2017-12-15 | 中策橡胶集团有限公司 | A kind of detection method of white carbon and silane coupler Silanization reaction degree |
| CN113834903A (en) * | 2021-08-17 | 2021-12-24 | 中策橡胶集团有限公司 | Method for detecting degree of silanization reaction of white carbon black and silane coupling agent in sizing material and application |
Non-Patent Citations (1)
| Title |
|---|
| 王丹灵，等: "白炭黑的特性及其硅烷化反应机理和混炼工艺", 《轮胎工业》, vol. 40, no. 9, 31 December 2020 (2020-12-31), pages 515 - 525 * |
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