CN111823433A - Mixing method for improving tensile strength of rubber - Google Patents
Mixing method for improving tensile strength of rubber Download PDFInfo
- Publication number
- CN111823433A CN111823433A CN202010499741.4A CN202010499741A CN111823433A CN 111823433 A CN111823433 A CN 111823433A CN 202010499741 A CN202010499741 A CN 202010499741A CN 111823433 A CN111823433 A CN 111823433A
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- CN
- China
- Prior art keywords
- mixing
- rubber
- tensile strength
- improving
- kneading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
Abstract
The invention discloses a mixing method for improving the tensile strength of rubber, which comprises the following steps: a first mixing step: firstly, adding carbon black into raw rubber, mixing and standing for 4-8 hours; a second mixing step, then, adding a plasticizer for mixing; a third mixing step, adding stearic acid, and mixing; and a fourth mixing step, finally, adding a vulcanizing agent for mixing. According to the mixing method for improving the tensile strength of the rubber, the carbon black is firstly added for reinforcement, and then other auxiliary agents are added, so that the tensile strength of rubber products is obviously improved, the special requirements of some rubber products can be met, the quality of some rubber products with lower strength can also be improved, and the mixing method has higher practical value.
Description
Technical Field
The invention relates to a mixing technology of rubber products, in particular to a mixing method for improving the tensile strength of rubber.
Background
Filling reinforcement is one of the most important processes in the mixing of rubber products.
There is no absolute limit between filling and reinforcement but there is a large difference.
The rubber is filled, the volume of the rubber can be increased, the cost of rubber products is reduced, the processing technological property of the rubber is improved, and the physical and mechanical properties of the product are not greatly influenced.
The rubber reinforcement can improve the mechanical properties of the rubber, such as tensile strength, wear resistance, tearing strength, stress at definite elongation and the like, improve the service performance of the product and prolong the service life.
At present, the filling and the reinforcing in the process of mixing rubber products are not strictly divided, and are collectively called as fillers, and the mixing mode is basically a common mixing mode.
The mixing method has the advantages of simple process, strong operability, high efficiency and the like.
However, it is difficult to achieve some performance requirements, especially the tensile strength requirements of some rubber products are particularly high, and it is difficult to fully exert the reinforcing effect by using the common mixing method.
Disclosure of Invention
The present invention has been made to solve at least one of the problems of the prior art, and an object of the present invention is to provide a kneading method for improving the tensile strength of rubber, which can completely exert the reinforcing effect of a filler and improve the tensile strength of a rubber product.
The invention is realized by the following technical scheme:
in a first aspect of the present invention, there is provided a kneading method for improving tensile strength of rubber, comprising: a first mixing step: firstly, adding carbon black into raw rubber, mixing and standing for 4-8 hours; a second mixing step, then, adding a plasticizer for mixing; a third mixing step, adding stearic acid, and mixing; and a fourth mixing step, finally, adding a vulcanizing agent for mixing.
According to the mixing method for improving the tensile strength of rubber according to the first aspect of the present invention, in the second mixing step, a filler is simultaneously added.
According to the mixing method for improving the tensile strength of rubber in the first aspect of the invention, in the third mixing step, an antioxidant is added simultaneously.
According to the mixing method for improving the tensile strength of rubber in the first aspect of the invention, in the third mixing step, the wax agent is added simultaneously.
According to the kneading method for improving the tensile strength of rubber according to the first aspect of the present invention, in the third kneading step, a release agent is simultaneously added.
According to the mixing method for improving the tensile strength of rubber according to the first aspect of the present invention, in the fourth mixing step, the scorch retarder is added simultaneously.
Has the advantages that: compared with the prior art, the mixing method for improving the tensile strength of the rubber obviously improves the tensile strength of rubber products by adding the carbon black for reinforcement and then adding other auxiliary agents, can meet the special requirements of some rubber products, can also improve the quality of some rubber products with lower strength, and has higher practical value.
Detailed Description
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
To show the difference, a comparative test is provided, in which rubber mixing is performed in a main flow manner and a mode of the present invention by taking a low friction rubber (acrylate rubber) oil seal compound of 25mm × 40mm × 7 as an example, to highlight the implementation effect of the present invention:
the common mixing method comprises the following steps: mixing raw rubber with auxiliary agents such as stearic acid, an anti-aging agent, a wax agent, a release agent and the like, adding fillers such as carbon black, graphite, wollastonite and the like and a plasticizer, mixing, and finally adding an anti-scorching agent and a vulcanizing agent, and mixing.
The mixing method of the invention comprises the following steps: 1. mixing the carbon black and the crude rubber, and standing for 4 to 8 hours to form the A mixed rubber. 2. Mixing the A rubber compound with other fillers and plasticizers, adding auxiliary agents such as stearic acid, an anti-aging agent, a wax agent, a release agent and the like, mixing, and finally adding an anti-scorching agent and a vulcanizing agent for mixing.
10 test pieces were prepared in two ways, and tensile strength properties were measured to obtain the following comparative results table.
From the above data it can be seen that: the tensile strength of the test piece obtained by the mixing method (the mixing mode of reinforcing by carbon black) of the invention is obviously improved.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.
Claims (6)
1. A kneading method for improving the tensile strength of rubber, comprising:
a first mixing step: firstly, adding carbon black into raw rubber, mixing and standing for 4-8 hours;
a second mixing step, then, adding a plasticizer for mixing;
a third mixing step, adding stearic acid, and mixing;
and a fourth mixing step, finally, adding a vulcanizing agent for mixing.
2. A kneading method for improving the tensile strength of rubber according to claim 1, characterized in that in the second kneading step, a filler is added simultaneously.
3. A kneading method for improving the tensile strength of rubber according to claim 1, characterized in that in the third kneading step, an antioxidant is added simultaneously.
4. A kneading method for improving the tensile strength of rubber according to claim 1, characterized in that in the third kneading step, a wax agent is simultaneously added.
5. A kneading method for improving the tensile strength of rubber according to claim 1, characterized in that in the third kneading step, a release agent is simultaneously added.
6. A kneading method for improving the tensile strength of rubber according to claim 1, characterized in that in the fourth kneading step, a scorch retarder is added simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010499741.4A CN111823433A (en) | 2020-06-04 | 2020-06-04 | Mixing method for improving tensile strength of rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010499741.4A CN111823433A (en) | 2020-06-04 | 2020-06-04 | Mixing method for improving tensile strength of rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111823433A true CN111823433A (en) | 2020-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010499741.4A Pending CN111823433A (en) | 2020-06-04 | 2020-06-04 | Mixing method for improving tensile strength of rubber |
Country Status (1)
| Country | Link |
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| CN (1) | CN111823433A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7488768B2 (en) * | 2000-10-13 | 2009-02-10 | Michelin Recherche Et Technique S.A. | Rubber composition comprising a polyfunctional organosilane as coupling agent |
| CN101987906A (en) * | 2010-11-18 | 2011-03-23 | 天津鹏翎胶管股份有限公司 | Acrylate rubber turbine ascending pipe and preparation method thereof |
| CN103265733A (en) * | 2013-05-31 | 2013-08-28 | 西安科技大学 | Superfine calcined kaolin filled rubber material and preparation method thereof |
| CN105237929A (en) * | 2015-11-18 | 2016-01-13 | 南京七四二五橡塑有限责任公司 | Environment-friendly low-cost acrylate sizing material |
| CN105384981A (en) * | 2015-11-13 | 2016-03-09 | 怡维怡橡胶研究院有限公司 | Method for preparing tread rubber from bi-phase carbon black rubber master batch/carbon black dry process master batch |
| CN106009117A (en) * | 2016-05-27 | 2016-10-12 | 南京金三力橡塑有限公司 | Steel roller support used rubber cushion block and preparation method thereof |
| CN108384083A (en) * | 2018-02-08 | 2018-08-10 | 合肥市大卓电力有限责任公司 | A kind of flame-retardant electric wire and cable protective materials and preparation method thereof |
| CN110405966A (en) * | 2019-07-19 | 2019-11-05 | 株洲时代新材料科技股份有限公司 | A kind of preparation method of situ-formed graft modified rubber |
| US10618017B2 (en) * | 2014-08-05 | 2020-04-14 | The Yokohama Rubber Co., Ltd. | Method of mixing rubber composition and system for mixing rubber composition |
-
2020
- 2020-06-04 CN CN202010499741.4A patent/CN111823433A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7488768B2 (en) * | 2000-10-13 | 2009-02-10 | Michelin Recherche Et Technique S.A. | Rubber composition comprising a polyfunctional organosilane as coupling agent |
| CN101987906A (en) * | 2010-11-18 | 2011-03-23 | 天津鹏翎胶管股份有限公司 | Acrylate rubber turbine ascending pipe and preparation method thereof |
| CN103265733A (en) * | 2013-05-31 | 2013-08-28 | 西安科技大学 | Superfine calcined kaolin filled rubber material and preparation method thereof |
| US10618017B2 (en) * | 2014-08-05 | 2020-04-14 | The Yokohama Rubber Co., Ltd. | Method of mixing rubber composition and system for mixing rubber composition |
| CN105384981A (en) * | 2015-11-13 | 2016-03-09 | 怡维怡橡胶研究院有限公司 | Method for preparing tread rubber from bi-phase carbon black rubber master batch/carbon black dry process master batch |
| CN105237929A (en) * | 2015-11-18 | 2016-01-13 | 南京七四二五橡塑有限责任公司 | Environment-friendly low-cost acrylate sizing material |
| CN106009117A (en) * | 2016-05-27 | 2016-10-12 | 南京金三力橡塑有限公司 | Steel roller support used rubber cushion block and preparation method thereof |
| CN108384083A (en) * | 2018-02-08 | 2018-08-10 | 合肥市大卓电力有限责任公司 | A kind of flame-retardant electric wire and cable protective materials and preparation method thereof |
| CN110405966A (en) * | 2019-07-19 | 2019-11-05 | 株洲时代新材料科技股份有限公司 | A kind of preparation method of situ-formed graft modified rubber |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201027 |
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| RJ01 | Rejection of invention patent application after publication |