CN112280111B - Flow agent for rubber products and preparation method thereof - Google Patents
Flow agent for rubber products and preparation method thereof Download PDFInfo
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- CN112280111B CN112280111B CN202011110278.6A CN202011110278A CN112280111B CN 112280111 B CN112280111 B CN 112280111B CN 202011110278 A CN202011110278 A CN 202011110278A CN 112280111 B CN112280111 B CN 112280111B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a flowing agent for rubber products and a preparation method thereof, wherein the flowing agent for the rubber products comprises the following raw material components: the raw material components comprise: 35-70 parts of natural palmitic acid, 15-30 parts of palmitic soap, 10-25 parts of fatty acid ester, 5-18 parts of fatty amide, 10-25 parts of palm wax and 20-50 parts of calcium zinc salt of fatty acid, wherein the parts are in parts by mass. The flowing agent for the rubber product is environment-friendly and low in smell; the rubber has good lubricating effect on rubber macromolecules in the mixing process, reduces frictional heat generation among polymer molecules, prevents materials from being dead, and obviously reduces the energy consumption of rubber mixing; the paint has good infiltration and dispersion effects on fillers such as carbon black and the like, and effectively avoids uneven dispersion caused by filler accumulation; obviously reduces the Mooney viscosity and the fluidity of the rubber material, and effectively improves the processability; the product is easy to disperse in rubber and does not bloom; the safety of the rubber material is improved, the positive vulcanization time of the process is shortened, and the vulcanization degree is improved; the improvement of the strength and the aging resistance of the sizing material is promoted.
Description
Technical Field
The invention relates to a flowing agent for rubber products and a preparation method thereof, belonging to the field of rubber products.
Background
The rubber industry is one of the important basic industries of national economy, and rubber products are widely applied to various industries and become an indispensable part of daily life.
In the production of rubber, a plurality of procedures such as banburying, open milling, calendering, extruding, demoulding and the like are required, wherein the problems of operation such as roll sticking, rotor sticking, mould sticking and the like, poor dispersion, bubble generation of products and the like are encountered, stearic acid is generally used for improving the problems, but the stearic acid is used in an amount exceeding 1.5PHR, delayed vulcanization is caused by excessive use, the improving effect is limited, and the phenomenon of blooming and whitening is sometimes caused.
Disclosure of Invention
The invention provides a flow agent for rubber products and a preparation method thereof, the flow agent for rubber products can obviously reduce the Mooney viscosity of rubber materials, has no roller sticking and no frost, promotes the affinity of crude rubber and fillers, improves the dispersibility, and has no bubbles; the minimum rheological torque is reduced, the processing performance is improved, the scorching time is prolonged, the safety of the rubber material is improved, the normal vulcanization time is shortened, and the vulcanization degree of the rubber material is improved; the improvement of the strength and the aging resistance of the sizing material is promoted.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a flow agent for rubber products comprises the following raw material components: the raw material components comprise: 35-70 parts of natural palmitic acid, 15-30 parts of palmitic soap, 10-25 parts of fatty acid ester, 5-18 parts of fatty amide, 10-25 parts of palm wax and 20-50 parts of calcium zinc salt of fatty acid, wherein the parts are in parts by mass.
Through research, development and practice verification, the flowing agent with the specific composition can obviously reduce the Mooney viscosity of rubber materials through synergistic promotion of all components, has no problems of roller sticking and the like, promotes the affinity of raw rubber and fillers, obviously improves the dispersibility of all components in the rubber processing process, and ensures that products have no bubbles and do not bloom; meanwhile, through the matching of the natural palmitic acid, the palmitic acid soap and the palm wax with other materials, the vulcanization degree of the rubber material is improved, the safety of the rubber material is improved, the normal vulcanization time is shortened, and the improvement of the strength and the aging resistance of the rubber material is promoted.
The method improves the vulcanization degree, promotes the improvement of the strength and the aging resistance of the sizing material, and the applicant believes that synergistic promotion effect is generated among the material components and between the material components and the sizing material, so that the mooney viscosity is reduced, the operability is improved, the dispersibility and the uniformity of the material are improved, the crosslinking of the sizing material is promoted, the crosslinking degree is enhanced, and the strength and the aging resistance of the sizing material are further improved.
In order to further promote the reduction of the Mooney viscosity and the improvement of the dispersibility of the rubber compound and improve the operation performance, the palmitic acid soap is sodium palmitate soap.
In order to further promote the dispersibility and the flowability of the materials and simultaneously promote the synergistic effect between the materials, the fatty acid ester is pentaerythritol tetra behenate.
In order to further improve the processing performance of the sizing material, the oxygen fatty amide is at least one of octadecyl erucamide or ethylene bisstearamide.
In order to further improve the processing performance of the rubber compound and better promote the vulcanization of the rubber compound, the mass ratio of the oxygen fatty amide to the octadecyl erucamide to the ethylene bisstearamide is 1: (0.8-1.2).
In order to further improve the dispersibility of the material and avoid the generation of bubbles, the oxygen fatty amide is at least one of octadecyl erucamide, ethylene bisstearamide or oleyl palmitamide. Further preferably, the oxygen fatty amide is octadecyl erucamide, ethylene bisstearamide and oleyl palmitamide in a mass ratio of 1: (0.8-1.2): 1. This may better promote crosslinking of the compound, enhance compound strength and aging resistance.
In order to further improve the processing performance of the rubber compound and promote the strength of the rubber compound, the mass ratio of the fatty acid calcium zinc salt to the zinc stearate to the calcium stearate to the magnesium stearate to the sodium stearate is 1: (3-5): (0.2-0.5): (0.1-0.3).
The preparation method of the flowing agent for the rubber product comprises the following steps of sequentially connecting:
1) melting: under the condition that the temperature is 100-120 ℃, adding natural palmitic acid for melting, adding palmitic acid soap, fatty acid ester, fatty amide, palm wax and calcium-zinc fatty acid salt after the natural palmitic acid is completely melted, setting the temperature to be 140-145 ℃, starting stirring for accelerating melting until the palmitic acid is completely melted, and finally adding to obtain a melt;
2) and (3) heat preservation: and (3) transferring the melt obtained in the step (1) to a storage tank, and conveying the melt to a granulator for granulation when the temperature of the melt is reduced to 80-90 ℃.
Oleyl palmitamide was added in step 1) together with the palmitic acid soap.
In order to ensure the product quality, in the step 2), the cloth pipeline needs to be heated in advance before the liquid is conveyed, so as to remove foreign matters and residues.
The technology not mentioned in the present invention is referred to the prior art.
The flowing agent for the rubber product is prepared from plant extracts, is environment-friendly and has low odor; the rubber has good lubricating effect on rubber macromolecules in the mixing process, so that frictional heat generation among polymer molecules is reduced, material death is prevented, and the energy consumption of rubber mixing is obviously reduced; the filler has good infiltration and dispersion effects on fillers such as carbon black and the like, so that the dispersion unevenness caused by filler accumulation is effectively avoided, and the dispersion performance of the filler is remarkably improved; obviously reduces the Mooney viscosity and the fluidity of the rubber material, effectively improves the processability, and is beneficial to the processability of rubber material such as kneading, calendering, extruding, mold filling, mold opening and the like; the product is easy to disperse in rubber and does not bloom; the minimum rheological torque is reduced, the fluidity is improved, the scorching time is prolonged, the safety of the rubber is improved, the positive vulcanization time of the process is shortened, and the vulcanization degree is improved; the improvement of the strength and the aging resistance of the sizing material is promoted; during preparation, the traditional steel belt cooling and conveying mode can be directly adopted, the cost of replacing the steel belt is saved, the operation is simple and convenient, the occupied area is small, and the working environment is clean.
Detailed Description
For better understanding of the present invention, the following examples are given for further illustration of the present invention, but the present invention is not limited to the following examples.
Table 1 shows the raw material composition of the flow agent for rubber products of each example
In the above table, the unit of the use amount of each component is mass fraction; the natural palmitic acid is Malaysia natural palmitic acid which is purchased from Guangzhou Guangxin chemical industry Co., Ltd, and the content of the natural palmitic acid is more than or equal to 99.9 percent; octadecyl erucamide, available from north Hubei Yongkui technology Ltd, at a level of 99%; the palm wax is purchased from Toyoguan wax products factory, Inc., the melting point is 62-64 ℃, and the oil content is 1%; oleyl palmitamide, available from far technologies, east, west, jiang, Dy 1168.
The preparation method of the flowing agent for the rubber products of the above embodiments comprises the following steps that are connected in sequence:
1) melting: under the condition that the temperature is 110-;
2) and (3) heat preservation: transferring the melt obtained in the step 1 to a storage tank, and conveying the melt to a granulator for granulation when the temperature of the melt is reduced to 80-90 ℃; before liquid is conveyed, the material distributing pipeline needs to be heated in advance to remove foreign matters and residues.
The flow agent prepared in each example is used for preparing tread rubber, the formula of the rubber material is shown in table 2, the performance evaluation is shown in table 3, and the tread rubber is processed by a conventional two-stage mixing process.
Table 2 shows the formulation of the rubber compositions of the examples
In the above table, 3L of natural rubber, which is purchased from Kun, Dongguan city and plastics chemical Co., Ltd., effective substance is more than 99 wt%; BR9000 is BR9000 cis-butadiene rubber available from Oak industries, Shanghai; the unit of the use amount of each component is mass portion.
Table 3 shows the effect of flow agents on the properties of the rubber compositions for the rubber articles of the examples
The competitive product 1 is RF-70; the contest 2 is an import flow agent.
As can be seen from the above table, the addition of the flow agent of the present application effectively reduces the Mooney viscosity and improves the processability; from the data of the vulcanization characteristic, the addition of the flow agent reduces the minimum rheological torque, improves the fluidity, prolongs the scorching time, improves the safety of rubber materials, shortens the positive vulcanization time of the process, improves the vulcanization degree, and has delay for competitive products; according to the data of the performance of the vulcanized rubber material, the hardness of the rubber material is almost unchanged by adding the dispersing agent; the tensile strength, the tearing strength and the aging resistance are all superior to competitive products and blanks; no frost coating, no roller sticking and no bubble; the environment-friendly and low-odor rubber mixing agent has the advantages that friction and heat generation among polymer molecules are reduced, dead materials are prevented, and rubber mixing energy consumption is remarkably reduced; the filler has good infiltration and dispersion effects on fillers such as carbon black and the like, so that the dispersion unevenness caused by filler accumulation is effectively avoided, and the dispersion performance of the filler is remarkably improved; the traditional steel strip cooling transmission mode can be directly adopted, the operation is simple and convenient, the occupied area is small, and the working environment is clean; is especially suitable for rubber products such as tire tread rubber, automobile shock absorption parts, conveying belts, soles and the like.
Claims (5)
1. A flow agent for rubber products, characterized in that: the raw material components comprise: 35-70 parts of natural palmitic acid, 15-30 parts of palmitic soap, 10-25 parts of fatty acid ester, 5-18 parts of fatty amide, 10-25 parts of palm wax and 20-50 parts of calcium zinc salt of fatty acid, wherein the parts are in parts by mass;
the fatty amide is octadecyl erucamide, ethylene bisstearic acid amide and oleyl palmitamide in a mass ratio of 1: (0.8-1.2): 1;
the fatty acid calcium zinc salt is prepared from zinc stearate, calcium stearate, magnesium stearate and sodium stearate in a mass ratio of 1: (3-5): (0.2-0.5): (0.1-0.3).
2. A flow agent for rubber products according to claim 1, wherein: the palmitic acid soap is sodium palmitate soap.
3. A flow agent for rubber products according to claim 1 or 2, wherein: the fatty acid ester is pentaerythritol tetra behenate.
4. A process for producing a flow agent for rubber articles as claimed in any one of claims 1 to 3, characterized in that: comprises the following steps that:
1) melting: under the condition that the temperature is 100-120 ℃, adding natural palmitic acid for melting, after the natural palmitic acid is completely melted, adding palmitic acid soap, fatty acid ester, fatty acid amide, palm wax and calcium and zinc fatty acid salt, setting the temperature as 140-145 ℃, starting stirring for accelerating melting until the natural palmitic acid is completely melted, and obtaining a melt;
2) and (3) heat preservation: and (3) transferring the melt obtained in the step (1) to a storage tank, and conveying the melt to a granulator for granulation when the temperature of the melt is reduced to 80-90 ℃.
5. The method of claim 4, wherein: oleyl palmitamide was added in step 1) together with the palmitic acid soap; in the step 2), before liquid is conveyed, the cloth pipeline needs to be heated in advance to remove foreign matters and residues.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011110278.6A CN112280111B (en) | 2020-10-16 | 2020-10-16 | Flow agent for rubber products and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011110278.6A CN112280111B (en) | 2020-10-16 | 2020-10-16 | Flow agent for rubber products and preparation method thereof |
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| CN112280111A CN112280111A (en) | 2021-01-29 |
| CN112280111B true CN112280111B (en) | 2022-09-06 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02133453A (en) * | 1988-11-14 | 1990-05-22 | Adeka Argus Chem Co Ltd | Agricultural vinyl chloride resin composition |
| CN101108903A (en) * | 2006-07-21 | 2008-01-23 | 广东工业大学 | Nitrile rubber sizing material using black pigment modifier |
| CN103450504A (en) * | 2013-08-28 | 2013-12-18 | 山东阳谷华泰化工股份有限公司 | White carbon black dispersant for rubber and preparation method of white carbon black dispersant |
| CN105906988A (en) * | 2016-06-28 | 2016-08-31 | 东莞市兄奕塑胶制品有限公司 | Environment-friendly PVC (polyvinyl chloride) edge strip, and preparation method and processing coating facility thereof |
| CN109810324A (en) * | 2019-01-30 | 2019-05-28 | 青岛福凯橡塑新材料有限公司 | A kind of rubber flowing dispersing agent and preparation method thereof |
| CN111286100A (en) * | 2020-03-11 | 2020-06-16 | 青岛福诺化工科技有限公司 | Uniform dispersant for rubber processing and preparation method and application thereof |
-
2020
- 2020-10-16 CN CN202011110278.6A patent/CN112280111B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02133453A (en) * | 1988-11-14 | 1990-05-22 | Adeka Argus Chem Co Ltd | Agricultural vinyl chloride resin composition |
| CN101108903A (en) * | 2006-07-21 | 2008-01-23 | 广东工业大学 | Nitrile rubber sizing material using black pigment modifier |
| CN103450504A (en) * | 2013-08-28 | 2013-12-18 | 山东阳谷华泰化工股份有限公司 | White carbon black dispersant for rubber and preparation method of white carbon black dispersant |
| CN105906988A (en) * | 2016-06-28 | 2016-08-31 | 东莞市兄奕塑胶制品有限公司 | Environment-friendly PVC (polyvinyl chloride) edge strip, and preparation method and processing coating facility thereof |
| CN109810324A (en) * | 2019-01-30 | 2019-05-28 | 青岛福凯橡塑新材料有限公司 | A kind of rubber flowing dispersing agent and preparation method thereof |
| CN111286100A (en) * | 2020-03-11 | 2020-06-16 | 青岛福诺化工科技有限公司 | Uniform dispersant for rubber processing and preparation method and application thereof |
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