CN115895176A - Rubber processing aid and preparation method thereof - Google Patents
Rubber processing aid and preparation method thereof Download PDFInfo
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- CN115895176A CN115895176A CN202211638088.0A CN202211638088A CN115895176A CN 115895176 A CN115895176 A CN 115895176A CN 202211638088 A CN202211638088 A CN 202211638088A CN 115895176 A CN115895176 A CN 115895176A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention relates to a rubber processing aid and a preparation method thereof. The rubber processing aid comprises the following components in parts by weight: 18-20 parts of aromatic resin, 45-47 parts of maleimide zinc propionate and 33-37 parts of fatty acid ester. The preparation method comprises the following specific steps: 1) Reacting maleimido propionic acid and zinc oxide in certain proportion to prepare zinc maleimido propionate; 2) Mixing the dried zinc maleimidopropionate with aromatic resin and fatty acid ester while the zinc maleimidopropionate is hot, melting and blending at 110 ℃, cooling and granulating to obtain the target product. The rubber processing aid disclosed by the invention can improve the processing performance of a rubber material, helps the carbon black to disperse, and has the effects of hardening and modulus increasing on vulcanized rubber.
Description
Technical Field
The invention relates to the technical field of fine chemical engineering, and particularly relates to a rubber processing aid and a preparation method thereof.
Background
The rubber processing aid is a general term for chemical substances which can be used for improving the processing technological properties of rubber materials, including the properties of mixing, calendering, extruding, forming and the like of the rubber materials in an open mill or an internal mixer, and can be used for improving the dispersibility of fillers and shortening the mixing time. It has the characteristics of saving energy, improving the product quality and the production efficiency without influencing the mechanical property of the sizing material, and the like. In terms of the world, the rubber processing aid only accounts for about 10 percent of the rubber processing aid, but due to the unique functions, the rubber processing aid is always concerned by people. With the progress of society, the requirements on the performance and the process of materials are higher and higher, so that the vigorous development of rubber processing aids is particularly important.
Disclosure of Invention
The invention provides a rubber processing aid and a preparation method thereof, and the processing aid can improve the processing performance of rubber materials, help the dispersion of carbon black and simultaneously has the effects of hardening and modulus increasing on vulcanized rubber.
The specific technical scheme of the invention is as follows:
a rubber processing aid comprises the following components in parts by weight: 10-20 parts of aromatic resin, 30-50 parts of maleimide zinc propionate and 30-60 parts of fatty acid ester.
Preferably, the processing aid comprises the following components in parts by weight: 18-20 parts of aromatic resin, 45-47 parts of maleimide zinc propionate and 33-37 parts of fatty acid ester.
In the invention, the aromatic resin is preferably C 9 Petroleum resins, commercially available.
In the present invention, the fatty acid ester is preferably one or a combination of two or more of linear saturated or unsaturated fatty acid esters.
More preferably, the fatty acid ester is one or a combination of two of stearate and oleate.
More preferably, the fatty acid ester is oleate.
More preferably, the fatty acid ester is one or a combination of two of ethylene glycol oleate and pentaerythritol oleate.
More preferably, the fatty acid ester is pentaerythritol oleate.
The preparation method of the rubber processing aid comprises the following specific steps:
(1) Preparing maleimide propionic acid and zinc oxide into uniform aqueous dispersion to obtain dispersion A and dispersion B;
(2) Mixing and stirring the dispersion liquid A, the dispersion liquid B and a catalyst to react completely, filtering and drying to obtain zinc maleimide propionate;
(3) And (3) mixing the maleimide zinc propionate, the aromatic resin and the fatty acid ester while the mixture is hot after drying, melting and blending the mixture at the temperature of 110 ℃, and cooling and granulating the mixture to obtain the rubber processing aid.
In the invention, the catalyst is preferably hydrogen peroxide.
The invention has the advantages that:
1. the rubber processing aid disclosed by the invention has the effects of improving the fluidity and the processing performance and helping the dispersion of carbon black, and also has the effects of hardening and modulus increasing on vulcanized rubber.
2. The fatty acid ester contained in the processing aid component plays roles of plastication and lubrication in the rubber plastication process, and helps to improve the flowability of rubber materials and improve the processing performance under the combined action of resin; in addition, the aromatic resin has a structure with a plurality of benzene rings, and can form a strong adsorption effect with carbon black, so that the agglomeration of carbon black particles in the mixing process is relieved, and the dispersion effect is improved.
3. The maleimide zinc propionate has a double bond with certain reactivity, and can react with rubber to form a long-chain C-C crosslinking bond, so that the maleimide zinc propionate can play a role in hardening and modulus increasing on vulcanized rubber.
4. The preparation process is simple and pollution-free, belongs to a clean production process, and meets the national policy requirements of green production.
Detailed Description
The present invention will be further specifically described below by way of specific examples, but it should not be construed as limiting the scope of the present invention.
Example 1:
the invention discloses a rubber processing aid which comprises the following components in parts by weight: c 9 20 parts of petroleum resin, 47 parts of maleimide zinc propionate and 33 parts of pentaerythritol oleate.
The preparation method of the rubber processing aid comprises the following specific steps:
(1) Preparing maleimide propionic acid and zinc oxide into uniform aqueous dispersion to obtain dispersion A and dispersion B;
(2) Mixing and stirring the dispersion liquid A, the dispersion liquid B and hydrogen peroxide to react completely, filtering and drying to obtain zinc maleimide propionate;
(3) And (3) mixing the zinc maleimidopropionate, the aromatic resin and the fatty acid ester while the materials are hot after drying, melting and blending the mixture at the temperature of 110 ℃, and cooling and granulating the mixture to obtain the rubber processing aid disclosed by the invention.
Example 2:
example 2 differs from example 1 in that:
the invention relates to a rubber processing aid which comprises the following components in parts by weight: c 9 10 parts of petroleum resin, 30 parts of zinc maleimidopropionate and 60 parts of pentaerythritol oleate.
The preparation method is the same as example 1.
Example 3:
example 3 differs from example 1 in that:
the invention relates to a rubber processing aid which comprises the following components in parts by weight: c 9 10 parts of petroleum resin, 30 parts of zinc maleimidopropionate and 60 parts of fatty acid ester.
The fatty acid ester is a mixture of pentaerythritol stearate and ethylene glycol oleate; the pentaerythritol stearate and the glycol oleate are prepared from the following components in parts by weight: 30 parts of pentaerythritol stearate and 30 parts of ethylene glycol oleate.
The preparation method is the same as example 1.
Application test:
the rubber processing aid of the invention is subjected to application comparative tests to prove the advantages of the product of the invention.
1. Sizing formula (parts by weight)
The formula of the rubber is as follows: 100 # smoked sheet rubber, 2 stearic acid, 4 zinc oxide, N234 carbon black, 1 microcrystalline wax, 4020 antioxidant, 0.85 sulfur, 1.4 NOBS and 2 rubber processing aid.
2. The steps are as follows
(1) First-stage banburying: adding No. 1 smoked sheet rubber for 30s, plasticating 40s, adding 20s, adding stearic acid, zinc oxide, microcrystalline wax, an anti-aging agent, a processing aid and 30 parts of carbon black, adding residual carbon black in mixing 60s and 20s, mixing for 45s, lifting and cleaning for 20s, pressing and mixing for 45s, lifting and mixing for 25s, then discharging rubber, and discharging rubber in 305s in total.
(2) Two-stage open mill: and continuously adding NOBS and sulfur into the mixed rubber material on an open mill, and then discharging the rubber material into sheets.
3. Performance comparison test
The three compounds (blank, processing aid from example 1, same type of processing aid available commercially) were each cured at 150 ℃ to determine properties. The test is carried out according to the national standard, and the test data of the rheometer is shown in the table 1:
the results of the physical property tests are shown in Table 2:
combining the data in tables 1 and 2, it can be seen that: the processing aid provided by the invention obviously reduces the Mooney viscosity of the rubber compound, and is more beneficial to improving the processing performance of rubber; the dispersion coefficient and the dispersion grade of the carbon black are improved, which is reflected in the improvement of data such as compression temperature rise, rebound resilience, DMA tan 60 ℃ and the like; the improvement of hardness and the numerical value (tensile strength multiplied by tensile strength) representing the modulus of the rubber compound show that the processing aid has the effect of hardening and modulus increasing on vulcanized rubber.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims, the specification, and their equivalents.
Claims (10)
1. The rubber processing aid is characterized by comprising the following components in parts by weight: 10-20 parts of aromatic resin, 30-50 parts of maleimide zinc propionate and 30-60 parts of fatty acid ester.
2. The rubber processing aid of claim 1, wherein the processing aid comprises the following ingredients in parts by weight: 18-20 parts of aromatic resin, 45-47 parts of maleimide zinc propionate and 33-37 parts of fatty acid ester.
3. A rubber processing aid according to claims 1 and 2, wherein said aromatic resin is C 9 Petroleum resins, commercially available.
4. The rubber processing aid according to claims 1 and 2, wherein the fatty acid ester is one or a combination of any two or more of linear saturated or unsaturated fatty acid esters.
5. A rubber processing aid according to claims 1, 2 and 4 wherein said fatty acid ester is one or a combination of two of a stearate or an oleate.
6. A rubber processing aid according to claims 1-2 and 4-5 wherein said fatty acid ester is an oleate.
7. The rubber processing aid of claims 1-2 and 4-6, wherein the fatty acid ester is one or a combination of two of ethylene glycol oleate or pentaerythritol oleate.
8. A rubber processing aid according to claims 1-2 and 4-7, wherein said fatty acid ester is pentaerythritol oleate.
9. The method for preparing the rubber processing aid according to claims 1 to 8, comprising the following steps:
(1) Preparing maleimide propionic acid and zinc oxide into uniform water dispersion liquid to obtain dispersion liquid A and dispersion liquid B;
(2) Mixing and stirring the dispersion liquid A, the dispersion liquid B and a catalyst to react completely, filtering and drying to obtain zinc maleimide propionate;
(3) And (3) mixing the maleimide zinc propionate, the aromatic resin and the fatty acid ester while the mixture is hot after drying, melting and blending the mixture at the temperature of 110 ℃, and cooling and granulating the mixture to obtain the rubber processing aid.
10. The method for preparing a rubber processing aid according to claim 9, wherein the catalyst is hydrogen peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211638088.0A CN115895176A (en) | 2022-12-20 | 2022-12-20 | Rubber processing aid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211638088.0A CN115895176A (en) | 2022-12-20 | 2022-12-20 | Rubber processing aid and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115895176A true CN115895176A (en) | 2023-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211638088.0A Pending CN115895176A (en) | 2022-12-20 | 2022-12-20 | Rubber processing aid and preparation method thereof |
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| CN (1) | CN115895176A (en) |
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2022
- 2022-12-20 CN CN202211638088.0A patent/CN115895176A/en active Pending
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