CN110684242B - Natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation and preparation method thereof - Google Patents
Natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation and preparation method thereof Download PDFInfo
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- CN110684242B CN110684242B CN201910862506.6A CN201910862506A CN110684242B CN 110684242 B CN110684242 B CN 110684242B CN 201910862506 A CN201910862506 A CN 201910862506A CN 110684242 B CN110684242 B CN 110684242B
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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
- 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
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Abstract
The invention discloses a natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation and a preparation method thereof, relating to the technical field of rubber blending materials, wherein the natural rubber and butadiene rubber blending material comprises the following raw material components in parts by weight: 70-80 parts of natural rubber; 20-35 parts of butadiene rubber; 1.0-2.0 parts of a vulcanizing agent; 1.0-2.0 parts of an accelerator; 5.0-8.0 parts of an active agent; 1.0-2.0 parts of an anti-aging agent; 0.8-1.8 parts of an anti-reversion agent; 5-10 parts of paraffin; 40-70 parts of a filler.
Description
Technical Field
The invention relates to the technical field of rubber blending materials, in particular to a natural rubber and butadiene rubber blending material which has low damping coefficient and can automatically separate out wax and a preparation method thereof.
Background
With the higher and higher use requirements of automobiles, the requirements on automobile parts are also increased; . The rubber damping product is used as an important component of the design of the automobile comfort function, and the key points of achieving the modern automobile comfort goal are stable quality guarantee, lasting performance retention rate and reliable service life.
On one hand, the automobile suspension spring seat requires that the material has a low damping coefficient (the damping coefficient is 0.11-0.13 under the condition of 10 Hz), on the other hand, the material requires wax precipitation and noise reduction, and has durable fatigue resistance so as to prevent cracking after being used for a period of time; the traditional natural rubber has better physical and mechanical properties, but the damping coefficient of the rubber material is not easy to achieve due to the side group. For example, the products in the patent document "a blended material for anti-cracking and anti-aging of automobile oil pipe" (patent application No. 201010285189.5) and "blend of natural rubber and butadiene rubber and preparation method and application thereof" (patent application No. 201410372872.0) can not meet the requirements.
The compatibility of the butadiene rubber and the natural rubber material is good, the compounding agent is dispersed uniformly, and a side group structure does not exist, so that the low-damping blended rubber material is easy to prepare. The natural rubber/butadiene rubber blending material has good endurance fatigue performance, excellent shock absorption resilience, excellent physical and mechanical properties such as hardness, strength and the like, good injection manufacturability and vulcanization manufacturability, and is particularly suitable for shock absorption products.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the natural rubber and butadiene rubber blending material which has low damping coefficient and can automatically separate out wax and the preparation method thereof, can resist shock and reduce noise, and is suitable for damping of the injection vulcanization processed automobile suspension spring seat.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: the natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation comprises the following raw material components in parts by weight: 70-80 parts of natural rubber; 20-35 parts of butadiene rubber; 1.0-2.0 parts of a vulcanizing agent; 1.0-2.0 parts of an accelerator; 5.0-8.0 parts of an active agent; 1.0-2.0 parts of an anti-aging agent; 0.8-1.8 parts of an anti-reversion agent; 5-10 parts of paraffin; 40-70 parts of a filler.
On the basis of the technical scheme, the natural rubber is SCR WF.
On the basis of the technical scheme, the butadiene rubber is BR9000, and the Mooney viscosity ML1+4The temperature of 100 ℃ is 38-52 ℃.
On the basis of the technical scheme, the vulcanizing agent is sulfur, and the accelerator is a thiazole accelerator.
On the basis of the technical scheme, the anti-aging agent is a diaryl secondary amine anti-aging agent.
On the basis of the technical scheme, the anti-vulcanization reversion agent is an SDT/S anti-vulcanization reversion agent sold by Shanghai scene-friendly chemical industry Co.
On the basis of the technical scheme, the paraffin is No. 56 semi-refined paraffin.
On the basis of the technical scheme, the filler is carbon black.
On the basis of the technical scheme, the active agent consists of an inorganic oxide active agent and an organic fatty acid active agent.
The invention also provides a preparation method for producing the natural rubber and butadiene rubber blended material, which comprises the following steps: the first step is as follows: weighing the raw materials in parts by weight; the second step is that: uniformly mixing rubber, an active agent, an anti-aging agent, an antioxidant, an operating agent and a filler at 50-120 ℃ by using a rubber internal mixer; the third step: adding a vulcanizing agent and an accelerant into the two-stage rubber refining on an open mill at the temperature of 40-60 ℃, and uniformly mixing; the fourth step: injecting at 60-75 deg.c; the fifth step: and vulcanizing and molding at 160 ℃ for 360-500 seconds.
The invention has the beneficial effects that:
the invention adopts the most available materials of natural rubber and butadiene rubber for blending, has low price, and can obtain the blended rubber material with low damping coefficient by selecting the two materials for blending the grade and the proportion, thereby preparing the damping part material with excellent comprehensive performances of wax precipitation, noise reduction, damping property, lasting fatigue resistance and the like. The material has good compatibility, the compounding agent is dispersed uniformly, no sea-island phase structure exists, the blended material is easy to process, has good aging resistance, excellent damping performance and fatigue performance, excellent physical and mechanical properties such as hardness, strength and the like, and good ejection process performance and vulcanization process performance, can prolong the service life of the product, and is particularly suitable for automobile damping products.
Detailed Description
The present invention will be described in further detail with reference to examples, which are illustrative of the present invention and are not to be construed as being limited thereto. The amount of the additive is limited only to facilitate the practice of the invention, and is not described to be outside the scope of the invention.
The invention provides a natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation, which comprises the following raw material components in parts by weight:
specifically, the natural rubber is SCR WF, and the category of the natural rubber belongs to all-fresh-rubber latex.
Specifically, the butadiene rubber is BR9000, Mooney viscosity ML1+4The temperature of 100 ℃ is 38-52 ℃.
Specifically, the vulcanizing agent is sulfur, and the accelerator is a thiazole accelerator. Preferably, the vulcanizing agent is sulfur powder, and the accelerator is diphenyl propane thiazole Disulfide (DM).
Specifically, the anti-aging agent is a diaryl secondary amine anti-aging agent. Preferably, the anti-aging agent is 4010NA (N-isopropyl-N' -phenyl-p-phenylenediamine).
Specifically, the anti-reversion agent is an SDT/S anti-reversion agent sold by Shanghai Jing Hui chemical Co., Ltd.
Specifically, the paraffin is No. 56 semi-refined paraffin.
Specifically, the filler is carbon black. Preferably, the carbon black is furnace semi-reinforcing carbon black N774.
Specifically, the active agent consists of an inorganic oxide active agent and an organic fatty acid active agent. Preferably, the inorganic oxide activator is direct zinc oxide, and the content of zinc oxide is more than or equal to 99.7 percent. The organic fatty acid active agent is stearic acid S200.
The invention also provides a preparation method for producing the natural rubber and butadiene rubber blended material, which comprises the following steps:
the first step is as follows: weighing the raw materials in parts by weight;
the second step is that: uniformly mixing rubber, an active agent, an anti-aging agent, an antioxidant, an operating agent and a filler at 50-120 ℃ by using a rubber internal mixer;
the third step: adding a vulcanizing agent and an accelerant into the two-stage rubber refining on an open mill at the temperature of 40-60 ℃, and uniformly mixing;
the fourth step: injecting at 60-75 deg.c;
the fifth step: and vulcanizing and molding at 160 ℃ for 360-500 seconds.
The invention is further illustrated by the following specific examples.
Example one
The embodiment of the invention provides a natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation, which comprises the following raw material components in parts by weight:
example two
The embodiment of the invention provides a natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation, which comprises the following raw material components in parts by weight:
EXAMPLE III
The embodiment of the invention provides a natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation, which comprises the following raw material components in parts by weight:
example four
The embodiment of the invention provides a natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation, which comprises the following raw material components in parts by weight:
EXAMPLE five
The embodiment of the invention provides a natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation, which comprises the following raw material components in parts by weight:
EXAMPLE six
The embodiment of the invention provides a natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation, which comprises the following raw material components in parts by weight:
the main performances of the products of the first to fourth embodiments of the present invention were tested:
TABLE 1 raw material ratios (parts by weight) of the first to fourth examples of the present invention
| Name of raw material | Example 1 | Example 2 | Example 3 | Example 4 |
| Natural rubber SCR WF | 80 | 80 | 75 | 70 |
| Cis-butadiene rubber BR9000 | 20 | 20 | 25 | 30 |
| Zinc oxide | 5 | 5 | 5 | 5 |
| Stearic acid | 1.5 | 1.5 | 1.5 | 1.5 |
| Semi-reinforcing carbon black | 50 | 60 | 60 | 60 |
| Anti-aging agent 4010NA | 1 | 1 | 1 | 1 |
| Paraffin wax | 5 | 8 | 8 | 10 |
| Anti-reversion agent | 0.8 | 1.0 | 1.5 | 1.8 |
| Accelerator DM | 1.5 | 1.5 | 1.5 | 1.5 |
| Vulcanizing agent S | 1.5 | 1.5 | 1.5 | 1.5 |
The starting materials of the examples were prepared as follows:
the first step is as follows: weighing the raw materials in parts by weight (see table 1);
the second step is that: uniformly mixing rubber, an active agent, an anti-aging agent, an antioxidant, an operating agent and a filler at 50-120 ℃ by using a rubber internal mixer;
the third step: adding a vulcanizing agent and an accelerant into the two-stage rubber refining on an open mill at the temperature of 40-60 ℃, and uniformly mixing;
the fourth step: injecting at 60-75 deg.c;
the fifth step: and vulcanizing and molding at 160 ℃ for 360-500 seconds.
TABLE 2 Main Properties of the products of examples one to four of the present invention
The hardness in the examples was measured in GB/T531.1-2008, the tensile strength and the elongation at break were measured in GB/T528-.
The test data in table 2 prove that the invention can prepare a natural rubber and butadiene rubber blending material which has low damping coefficient and can automatically separate out wax, has certain quality stability, is suitable for processing automobile suspension spring seats and is also suitable for processing and manufacturing other related rubber damping parts.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (8)
1. The natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation is characterized by comprising the following raw materials in parts by weight:
the anti-reversion agent is an SDT/S anti-reversion agent sold by Shanghai scene-friendly chemical industry Co., Ltd;
the paraffin is No. 56 semi-refined paraffin.
2. The natural rubber and butadiene rubber blend material of claim 1, wherein: the natural rubber is SCR WF.
3. The natural rubber and butadiene rubber blend material of claim 1, wherein: the butadiene rubber is BR9000, Mooney viscosity ML1+4The temperature of 100 ℃ is 38-52 ℃.
4. The natural rubber and butadiene rubber blend material of claim 1, wherein: the vulcanizing agent is sulfur, and the accelerator is a thiazole accelerator.
5. The natural rubber and butadiene rubber blend material of claim 1, wherein: the anti-aging agent is a diaryl secondary amine anti-aging agent.
6. The natural rubber and butadiene rubber blend material of claim 1, wherein: the filler is carbon black.
7. The natural rubber and butadiene rubber blend material of claim 1, wherein: the active agent consists of an inorganic oxide active agent and an organic fatty acid active agent.
8. A preparation method for producing the natural rubber and butadiene rubber blended material of any one of claims 1 to 7, which is characterized by comprising the following steps:
the first step is as follows: weighing the raw materials in parts by weight;
the second step is that: uniformly mixing rubber, an active agent, an anti-aging agent, an antioxidant, an operating agent and a filler at 50-120 ℃ by using a rubber internal mixer;
the third step: adding a vulcanizing agent and an accelerant into the two-stage rubber refining on an open mill at the temperature of 40-60 ℃, and uniformly mixing;
the fourth step: injecting at 60-75 deg.c;
the fifth step: and vulcanizing and molding at 160 ℃ for 360-500 seconds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910862506.6A CN110684242B (en) | 2019-09-12 | 2019-09-12 | Natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation and preparation method thereof |
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| CN201910862506.6A CN110684242B (en) | 2019-09-12 | 2019-09-12 | Natural rubber and butadiene rubber blending material with low damping coefficient and automatic wax precipitation and preparation method thereof |
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| CN110684242B true CN110684242B (en) | 2022-01-14 |
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Citations (7)
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|---|---|---|---|---|
| JP2002265691A (en) * | 2001-03-14 | 2002-09-18 | Toyo Tire & Rubber Co Ltd | Vibration proof rubber composition and vibration proof rubber using the same |
| CN102134335A (en) * | 2010-12-30 | 2011-07-27 | 中国第一汽车集团公司 | Intermediate supporting cushion rubber of transmission shaft |
| CN103242569A (en) * | 2013-05-31 | 2013-08-14 | 安徽中鼎减震橡胶技术有限公司 | High-hardness low-dynamic ratio rubber material for automobile shock absorber bushing and preparation method for high-hardness low-dynamic ratio rubber material |
| CN103497364A (en) * | 2013-08-28 | 2014-01-08 | 上海众力汽车部件有限公司 | Rubber composition for automobile front shock absorption support |
| CN105315511A (en) * | 2014-07-31 | 2016-02-10 | 株洲时代新材料科技股份有限公司 | Natural rubber and butadiene rubber blend and preparation method therefor and application thereof |
| CN106947121A (en) * | 2017-03-21 | 2017-07-14 | 柳州日高汽车减振技术有限责任公司 | A kind of automobile engine suspension soft pad rubber preparing raw material and preparation method thereof |
| CN108484994A (en) * | 2018-04-04 | 2018-09-04 | 江苏骆氏减震件有限公司 | A kind of natural rubber composition material and its preparation method and application |
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2019
- 2019-09-12 CN CN201910862506.6A patent/CN110684242B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002265691A (en) * | 2001-03-14 | 2002-09-18 | Toyo Tire & Rubber Co Ltd | Vibration proof rubber composition and vibration proof rubber using the same |
| CN102134335A (en) * | 2010-12-30 | 2011-07-27 | 中国第一汽车集团公司 | Intermediate supporting cushion rubber of transmission shaft |
| CN103242569A (en) * | 2013-05-31 | 2013-08-14 | 安徽中鼎减震橡胶技术有限公司 | High-hardness low-dynamic ratio rubber material for automobile shock absorber bushing and preparation method for high-hardness low-dynamic ratio rubber material |
| CN103497364A (en) * | 2013-08-28 | 2014-01-08 | 上海众力汽车部件有限公司 | Rubber composition for automobile front shock absorption support |
| CN105315511A (en) * | 2014-07-31 | 2016-02-10 | 株洲时代新材料科技股份有限公司 | Natural rubber and butadiene rubber blend and preparation method therefor and application thereof |
| CN106947121A (en) * | 2017-03-21 | 2017-07-14 | 柳州日高汽车减振技术有限责任公司 | A kind of automobile engine suspension soft pad rubber preparing raw material and preparation method thereof |
| CN108484994A (en) * | 2018-04-04 | 2018-09-04 | 江苏骆氏减震件有限公司 | A kind of natural rubber composition material and its preparation method and application |
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