CN111849042A - Rubber material for rubber shaft sleeve and preparation method thereof - Google Patents
Rubber material for rubber shaft sleeve and preparation method thereof Download PDFInfo
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- CN111849042A CN111849042A CN202010773805.5A CN202010773805A CN111849042A CN 111849042 A CN111849042 A CN 111849042A CN 202010773805 A CN202010773805 A CN 202010773805A CN 111849042 A CN111849042 A CN 111849042A
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C08L2312/00—Crosslinking
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a rubber material for a rubber shaft sleeve and a preparation method thereof, wherein the rubber material for the rubber shaft sleeve is prepared from the following components in parts by weight, wherein 100 parts of smoked sheet rubber are adopted; 3-5 parts of zinc oxide; 1-2 parts of stearic acid; 1-2 parts of gamma-hydrophobic propyl trimethoxy silane; 35-55 parts of modified carbon black/white carbon black dual-phase filler; 25-45 parts of reverse carbon black; 5-15 parts of a softening plasticizer; 4-8 parts of an anti-aging agent; 2.9-5.6 parts of a vulcanizing agent. The rubber material for the rubber shaft sleeve is prepared by using a modified carbon black/white carbon black dual-phase filler and reverse carbon black as a reinforcing system and establishing a coupling crosslinking reticular structure between gamma-hydrophobic propyl trimethoxy silane and rubber macromolecules, has the characteristics of high durability and low dynamic multiplying power, has the characteristics of high wear resistance, low stress at definite elongation and low attenuation, and is suitable for preparing the rubber shaft sleeve of a suspension system.
Description
Technical Field
The invention relates to the technical field of rubber material preparation for rubber shaft sleeves, in particular to a rubber material for rubber shaft sleeves. Meanwhile, the invention also relates to a preparation method of the rubber material for the rubber shaft sleeve.
Background
The suspension system is a general name of all force transmission connecting devices between a frame and an axle or a wheel of an automobile, and is one of important assemblies of the automobile. Whether the structural form and the performance parameters of the suspension system are selected reasonably or not has great influence on the driving smoothness and the operating stability of the automobile.
The rubber shaft sleeve is an indispensable elastic element in a suspension system, can greatly improve the shock insulation effect of a high frequency band on the premise of hardly changing the shock insulation performance of a low frequency band, and has a vital effect on the comfort and the operation stability of the whole vehicle. The trailing arm axle sleeve is comparatively crucial rubber bush among the suspension system, and the product requirement has the characteristic of high rigidity, low dynamic rate, has higher fatigue resistance simultaneously to when guaranteeing whole car travelling comfort, satisfy the vehicle reliability requirement.
The existing materials for preparing the rubber shaft sleeve mostly use high-reinforcement carbon black or medium-reinforcement carbon black and white carbon black and other modes to meet the requirements of high rigidity and high fatigue property of rubber materials, but the above methods can cause the rubber materials to have overhigh dynamic multiplying power, overlarge product attenuation performance and poor high-frequency vibration insulation, thereby causing vehicle vibration and reducing the comfort. In addition, part of rubber materials are filled with a large amount of low-reinforcement carbon black and are matched with a high-sulfur vulcanization system, so that the product has low attenuation characteristics, but the method can cause poor reinforcement, large stress at definite elongation, low elongation and relatively poor long-term fatigue characteristics of the rubber materials, thereby shortening the service life of the product and increasing the after-sale maintenance cost.
Disclosure of Invention
In view of the above, the present invention is directed to a rubber material for a rubber bushing, so that the rubber material has the characteristics of high durability and low dynamic ratio.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a rubber material for a rubber shaft sleeve is prepared from the following components in parts by weight:
tobacco flake glue: 100 parts of (A);
zinc oxide: 3-5 parts;
stearic acid: 1-2 parts;
gamma-borylpropyltrimethoxysilane: 1-2 parts;
modified carbon black/white carbon black dual-phase filler: 35-55 parts of a modifier;
reverse carbon black: 25-45 parts;
softening plasticizer: 5-15 parts;
an anti-aging agent: 4-8 parts;
vulcanizing agent: 2.9 to 5.6 portions.
Further, the smoked sheet glue is prepared from the smoked sheet glue with Mooney viscosity of 50-60.
Further, the softening plasticizer adopts aromatic oil.
Further, the anti-aging agent comprises the following components in parts by weight: an anti-aging agent TMQ: 1-2 parts; anti-aging agent MB: 1-2 parts; anti-aging agent 4010 NA: 1-2 parts; anti-aging agent 4020: 1-2 parts.
Further, the weight parts of the antioxidant TMQ, the antioxidant MB, the antioxidant 4010NA and the antioxidant 4020 are 1:1:1: 1.
Further, the vulcanizing agent comprises the following components in parts by weight: sulfur: 1.5-2.5 parts; n-cyclohexyl-2-benzothiazolesulfenamide: 1-2.5 parts; dibenzothiazyl disulfide: 0.4 to 0.6 portion.
Further, the weight part of the N-cyclohexyl-2-benzothiazole sulfonamide and the dibenzothiazyl disulfide is 3: 1.
Compared with the prior art, the invention has the following advantages:
according to the rubber material for the rubber shaft sleeve, a special modified carbon black/white carbon black dual-phase filler is used, reverse carbon black is used as a reinforcing system, a coupling crosslinking reticular structure is established between gamma-hydrophobic propyl trimethoxy silane and rubber macromolecules, the bottleneck problem that dynamic multiplying power and durability of the conventional material are mutually contradictory can be effectively solved, and the rubber material for the rubber shaft sleeve with high durability and low dynamic multiplying power is prepared; in addition, reasonable components are selected and selected, and proper proportions are selected among the components, so that the components are mutually assisted and matched, the prepared rubber material for the rubber shaft sleeve has the characteristics of high wear resistance, low stress at definite elongation and low attenuation, and the rubber material is suitable for preparing the rubber shaft sleeve of a suspension system.
The invention also aims to provide a preparation method of the rubber material for the rubber shaft sleeve, which comprises the following preparation steps:
s1: banburying by an internal mixer, wherein the parameters are as follows:
initial temperature: 60-80 ℃; rotor speed: 30-35 RPM; filling factor: 0.6-0.8.
S2: an open mill is adopted for open mixing, and the parameters are as follows:
temperature: below 60 ℃; time: 13-15 min.
Further, in step S1, the feeding sequence is as follows: adding smoked sheet glue, zinc oxide, stearic acid and an anti-aging agent, and adding gamma-hydrophobic propyl trimethoxy silane, modified carbon black/white carbon black dual-phase filler, reverse carbon black and a softening plasticizer after 1-3 min.
Further, in step S2, the compound prepared in step S1 is added, and then the vulcanizing agent is added.
According to the preparation method of the rubber material for the rubber shaft sleeve, the prepared rubber material for the rubber shaft sleeve has the characteristics of high durability and low dynamic multiplying power by formulating proper process steps, proper process parameters and proper charging sequence.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail with reference to examples.
The embodiment relates to a rubber material for a rubber shaft sleeve, which is mainly prepared from components including smoked sheet rubber, zinc oxide, stearic acid, gamma-hydrophobic propyl trimethoxy silane, modified carbon black/white carbon black dual-phase filler, reverse carbon black, a softening plasticizer, an anti-aging agent and a vulcanizing agent, so that the prepared rubber material for the rubber shaft sleeve has the characteristics of high durability and low dynamic ratio.
Specifically, the weight ratio of each component is as follows, 100 parts of smoked sheet rubber, 3-5 parts of zinc oxide, 1-2 parts of stearic acid, 1-2 parts of gamma-hydrophobic propyl trimethoxy silane, 35-55 parts of modified carbon black/white carbon black dual-phase filler, 25-45 parts of reverse carbon black, 5-15 parts of aromatic oil adopted as a softening plasticizer, 4-8 parts of anti-aging agent and 2.9-5.6 parts of vulcanizing agent.
Based on the requirements of shock absorption and vibration isolation characteristics, the smoked sheet rubber in the components preferably adopts the smoked sheet rubber with Mooney viscosity of 50-60 after plastication. Based on the characteristics of high durability and low dynamic ratio of the damping rubber, the scheme that modified carbon black/white carbon black dual-phase filler and reverse carbon black are adopted in a reinforcing system is preferred. The modified carbon black/white carbon black dual-phase filler is preferably CRX2142 developed by the company of American Cabot, and the reverse carbon black is preferably Ecoblack series carbon black CRX1436 developed by the company of American Cabot.
The gamma-hydrophobic propyl trimethoxy silane can form a coupling structure with a reinforcing agent and smoked sheet glue, and the durability of the rubber material for the rubber shaft sleeve is improved. The softening plasticizer adopts aromatic oil, and preferably adopts a high-viscosity environment-friendly aromatic oil ring, so that the durability of the rubber compound can be improved while the processing technological characteristics of the rubber compound are ensured.
In order to enable the prepared material to have excellent characteristics of high durability and low dynamic magnification, the anti-aging agent comprises the following components in parts by weight, specifically 1-2 parts of anti-aging agent TMQ, 1-2 parts of anti-aging agent MB, 1-2 parts of anti-aging agent 4010NA and 40201-2 parts of anti-aging agent. Here, the weight part ratio of the antioxidant TMQ, the antioxidant MB, the antioxidant 4010NA, and the antioxidant 4020 is preferably 1:1:1: 1.
The vulcanizing agent comprises the following components in parts by weight, specifically 1.5-2.5 parts of sulfur, 1-2.5 parts of N-cyclohexyl-2-benzothiazole sulfonamide and 0.4-0.6 part of dibenzothiazyl disulfide. Here, the weight part ratio of N-cyclohexyl-2-benzothiazolesulfenamide and dibenzothiazyl disulfide is preferably 3: 1.
The following description is given of various preparation examples of the rubber material for rubber sleeves according to the present invention and the test conditions thereof with reference to the following table:
the analysis of the data in the table shows that, as can be seen from the comparison of examples 4 to 6, the fatigue times of the rubber are increased after the gamma-hydrophobic propyl trimethoxy silane, the modified carbon black/white carbon black dual-phase filler and the reverse carbon black are used together, and as can be seen from the comparison of example 6 and example 7, the fatigue times and dynamic multiplying power of the rubber are not obviously improved when the gamma-hydrophobic propyl trimethoxy silane is used together with the carbon black N330, and as can be seen from the comparison of example 4 and examples 8 to 9, the fatigue times of the rubber are increased and the dynamic multiplying power of the rubber is reduced with the increase of the gamma-hydrophobic propyl trimethoxy silane additive, the modified carbon black/white carbon black dual-phase filler and the reverse carbon black, the vulcanized rubber has the characteristics of low dynamic multiplying power and high attenuation.
The rubber material for the rubber shaft sleeve is prepared in practice by mainly including two steps of banburying and open mixing, and comprises the following specific steps:
s1: banburying by an internal mixer at the initial temperature of 60-80 ℃, preferably 70 ℃; rotor speed 30-35RPM, preferably 33 RPM; the filling factor is 0.6-0.8, preferably 0.7. In the step, the feeding sequence is as follows: adding smoked sheet glue, zinc oxide, stearic acid and an anti-aging agent, falling into the top plug after 20S, opening the top plug after 1-3min, preferably 2min, adding gamma-hydrophobic propyl trimethoxy silane, modified carbon black/white carbon black dual-phase filler, reverse carbon black and a softening plasticizer, falling into the top plug after 20S, keeping at 155 ℃ for 1-3min, preferably 2min, and then opening the top plug for discharging.
S2: the mixture is milled by an open mill, the open milling temperature is below 60 ℃, and the time is 13-15min, preferably 14 min. In the step, the rubber prepared in the step S1 is added, then the vulcanizing agent is added (the roller distance is controlled to be 0.4mm), after the small materials are uniformly mixed, the left three-blade and the right three-blade are used, then triangular packaging is carried out for 5 times (the roller distance is controlled to be 0.2mm), and finally, the sheet is taken down (the roller distance is controlled to be 2.0 mm).
According to the preparation method of the rubber material for the rubber shaft sleeve, provided by the invention, through formulating proper process steps, proper process parameters and proper charging sequence, the prepared rubber material for the rubber shaft sleeve has the characteristics of high rigidity and low dynamic rate and simultaneously has durability, so that the bottleneck problem of contradiction between the dynamic rate and the durability of the conventional material is effectively solved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The rubber material for the rubber shaft sleeve is characterized by being prepared from the following components in parts by weight:
tobacco flake glue: 100 parts of (A);
zinc oxide: 3-5 parts;
stearic acid: 1-2 parts;
gamma-borylpropyltrimethoxysilane: 1-2 parts;
modified carbon black/white carbon black dual-phase filler: 35-55 parts of a modifier;
reverse carbon black: 25-45 parts;
softening plasticizer: 5-15 parts;
an anti-aging agent: 4-8 parts;
vulcanizing agent: 2.9 to 5.6 portions.
2. The compound for rubber bushings according to claim 1, characterized in that: the tobacco flake glue is made of tobacco flake glue with Mooney viscosity of 50-60.
3. The compound for rubber bushings according to claim 1, characterized in that: the softening plasticizer adopts aromatic oil.
4. The compound for rubber bushings according to claim 1, characterized in that: the anti-aging agent comprises the following components in parts by weight: an anti-aging agent TMQ: 1-2 parts; anti-aging agent MB: 1-2 parts; anti-aging agent 4010 NA: 1-2 parts; anti-aging agent 4020: 1-2 parts.
5. The compound for rubber bushings according to claim 4, characterized in that: the weight parts of the antioxidant TMQ, the antioxidant MB, the antioxidant 4010NA and the antioxidant 4020 are 1:1:1: 1.
6. A rubber compound for a rubber sleeve according to any one of claims 1 to 5, wherein: the vulcanizing agent comprises the following components in parts by weight: sulfur: 1.5-2.5 parts; n-cyclohexyl-2-benzothiazolesulfenamide: 1-2.5 parts; dibenzothiazyl disulfide: 0.4 to 0.6 portion.
7. The compound for rubber bushings according to claim 6, characterized in that: the weight parts of the N-cyclohexyl-2-benzothiazole sulfonamide and the dibenzothiazyl disulfide are 3: 1.
8. The process for preparing a rubber compound for rubber bushings according to any of claims 1 to 7, characterized by comprising the following preparation steps:
s1: banburying by an internal mixer, wherein the parameters are as follows:
initial temperature: 60-80 ℃; rotor speed: 30-35 RPM; filling factor: 0.6-0.8.
S2: an open mill is adopted for open mixing, and the parameters are as follows:
temperature: below 60 ℃; time: 13-15 min.
9. The method for preparing the rubber material for the rubber shaft sleeve according to claim 8, wherein the method comprises the following steps: the feeding sequence in step S1 is as follows: adding smoked sheet glue, zinc oxide, stearic acid and an anti-aging agent, and adding gamma-hydrophobic propyl trimethoxy silane, modified carbon black/white carbon black dual-phase filler, reverse carbon black and a softening plasticizer after 1-3 min.
10. The compound for rubber bushings according to claim 9, characterized in that: in step S2, the rubber compound prepared in step S1 is added, and then a vulcanizing agent is added.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773805.5A CN111849042B (en) | 2020-08-04 | 2020-08-04 | Rubber material for rubber shaft sleeve and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773805.5A CN111849042B (en) | 2020-08-04 | 2020-08-04 | Rubber material for rubber shaft sleeve and preparation method thereof |
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| CN111849042A true CN111849042A (en) | 2020-10-30 |
| CN111849042B CN111849042B (en) | 2022-04-19 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1323777A1 (en) * | 2001-12-28 | 2003-07-02 | JSR Corporation | Rubber composition, vibration-isolating rubber and vibration-isolating mount |
| CN1842569A (en) * | 2003-06-30 | 2006-10-04 | 日本瑞翁株式会社 | Rubber composition containing silica and method for production therof |
| JP2015040245A (en) * | 2013-08-21 | 2015-03-02 | 東洋ゴム工業株式会社 | Method for producing rubber composition |
| CN105273248A (en) * | 2015-11-13 | 2016-01-27 | 怡维怡橡胶研究院有限公司 | Diphasic carbon black and carbon black wet method masterbatch combined rubber composition and preparing method thereof |
| CN105273253A (en) * | 2015-11-13 | 2016-01-27 | 怡维怡橡胶研究院有限公司 | Method for preparing tread rubber through dual-phase-carbon-black rubber master batch and carbon black and application thereof |
| US20160304697A1 (en) * | 2015-04-16 | 2016-10-20 | CR Minerals Company, LLC | Materials and methods for enhancing physical properties, dynamic properties and dispersion in carbon black and mixtures containing carbon black |
| WO2017080513A1 (en) * | 2015-11-13 | 2017-05-18 | 怡维怡橡胶研究院有限公司 | Wet mixing master batch, rubber composition prepared from filler or master batch, and preparation method |
| JP6657491B1 (en) * | 2018-09-26 | 2020-03-04 | 住友理工株式会社 | Anti-vibration rubber composition and anti-vibration rubber member |
-
2020
- 2020-08-04 CN CN202010773805.5A patent/CN111849042B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1323777A1 (en) * | 2001-12-28 | 2003-07-02 | JSR Corporation | Rubber composition, vibration-isolating rubber and vibration-isolating mount |
| CN1842569A (en) * | 2003-06-30 | 2006-10-04 | 日本瑞翁株式会社 | Rubber composition containing silica and method for production therof |
| JP2015040245A (en) * | 2013-08-21 | 2015-03-02 | 東洋ゴム工業株式会社 | Method for producing rubber composition |
| US20160304697A1 (en) * | 2015-04-16 | 2016-10-20 | CR Minerals Company, LLC | Materials and methods for enhancing physical properties, dynamic properties and dispersion in carbon black and mixtures containing carbon black |
| CN105273248A (en) * | 2015-11-13 | 2016-01-27 | 怡维怡橡胶研究院有限公司 | Diphasic carbon black and carbon black wet method masterbatch combined rubber composition and preparing method thereof |
| CN105273253A (en) * | 2015-11-13 | 2016-01-27 | 怡维怡橡胶研究院有限公司 | Method for preparing tread rubber through dual-phase-carbon-black rubber master batch and carbon black and application thereof |
| WO2017080513A1 (en) * | 2015-11-13 | 2017-05-18 | 怡维怡橡胶研究院有限公司 | Wet mixing master batch, rubber composition prepared from filler or master batch, and preparation method |
| JP6657491B1 (en) * | 2018-09-26 | 2020-03-04 | 住友理工株式会社 | Anti-vibration rubber composition and anti-vibration rubber member |
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