KR101846707B1 - Anti vibration rubber composition improved vibration isolation and Anti vibration rubber - Google Patents

Abstract

TECHNICAL FIELD The present invention relates to a vibration damping rubber composition having improved mechanical strength and vibration insulation performance such as tensile strength and elongation, and more particularly, to a vibration damping rubber composition using an optimal combination of natural rubber and butadiene rubber to improve vibration insulation performance, To a vibration-damping rubber composition and a vibration-damping rubber which satisfy the mechanical properties by using a predetermined amount of the carbon nanotubes into which the carbon nanotube is introduced.

Description

TECHNICAL FIELD [0001] The present invention relates to an anti-vibration rubber composition and an anti-vibration rubber,

The present invention relates to a vibration damping rubber composition and a vibration damping rubber composition, which are improved in vibration insulation performance as well as mechanical properties of a vibration damping rubber material by adding carbon nanotubes having at least one activator selected from carboxyl, hydroxyl, The present invention relates to an anti-vibration rubber.

Dustproof rubber in the automotive field refers to rubber used for preventing vibration noise (NVH). The anti-vibration rubber uses the property of absorbing the kinetic energy of the rubber to prevent the vibration from the motor or the engine from being transmitted to the outside. The bushings such as the stabilizer bar bush and the suspension bush in the vehicle are required to have sufficient durability against the external force externally so that the NVH performance of the automobile can be improved to improve the ride quality.

Accordingly, studies have been actively made to develop a vibration-damping rubber component capable of suppressing vibration and noise at the time of riding and improving the comfort of a vehicle.

For example, Korean Patent Laid-Open Publication No. 2011-11010 discloses a process for producing a rubber composition containing a sulfur, a vulcanization accelerator, an activator, an antioxidant, a dispersant, a processing oil and a carbon black in a specific amount By weight based on the total weight of the rubber composition for a bush, improved physical properties such as aging properties, fatigue resistance and high damping properties.

However, in the prior art, when carbon black or carbon black and carbon nanotubes are mixed as a filler, carbon black is used as a filler. However, there is a limit to add various additives in order to satisfy the mechanical properties required of the vibration- Due to the heavy use of carbon black, the limitation of fuel economy due to the increase in weight has been raised. In addition, natural carbon nanotubes have a low surface activation degree and thus have a limitation in realizing the effect of improving vibration insulation.

Accordingly, it is possible to improve the ride quality of a vehicle by improving the quality index of the vibration / noise region due to the satisfaction of the mechanical properties required for the anti-vibration rubber component, the improvement of the fuel consumption by reducing the weight of the component, .

1: Korea Patent Publication No. 2011-11010

Accordingly, when carbon nanotubes having at least one activator selected from the group consisting of a carboxyl group, a hydroxyl group, an ether group, and an ester group are incorporated in a predetermined amount of the vibration damper rubber composition, the present inventors have found that, It is possible to achieve the improvement of the weight and the weight of the parts. Thus, the present invention has been completed.

Therefore, an object of the present invention is to provide a vibration-damping rubber composition improved in vibration insulation.

Another object of the present invention is to provide an anti-vibration rubber made of the anti-vibration rubber composition.

In order to solve the above problems, the present invention provides a rubber composition comprising a raw rubber, a filler, an antioxidant, an activator and a crosslinking agent, wherein the raw rubber comprises 70 to 80 parts by weight of natural rubber and 20 to 30 parts by weight of butadiene rubber Wherein the filler comprises 40 to 50 parts by weight of carbon black per 100 parts by weight of the raw rubber; And 0.5 to 3 parts by weight of carbon nanotubes into which at least one activating group selected from the group consisting of a carboxyl group, a hydroxyl group, an ether group, and an ester group is introduced.

Further, the present invention provides an anti-vibration rubber which is made of the anti-vibration rubber composition.

The vibration damping rubber composition according to the present invention satisfies mechanical properties equivalent to or superior to those of the conventional vibration damping rubber composition using only carbon black as a filler and reduces the total amount of the filler to be added, An improvement effect can be obtained.

Further, since the vibration insulation is excellent, it is possible to improve the ride quality of the automobile and to improve the quality index of the vibration and noise region, thereby reducing the consumer complaints caused by quality problems.

1 shows a dispersed state of the filler used in the present invention.

The present invention provides an anti-vibration rubber composition having improved vibration insulation properties including a raw material rubber, a filler, an anti-aging agent, an activator, and a crosslinking agent. Each component used in the vibration-damping rubber composition according to the present invention will be described in more detail as follows.

First, natural rubber and synthetic rubber are used together in the present invention. Synthetic rubber is a mixture of butadiene rubber having high flexibility and high rebound resilience and high content of cis butyadiene rubber.

Accordingly, the mixing ratio of the natural rubber and the butadiene rubber is optimized to improve the dynamic magnification of the rubber material. The raw material rubber proposed by the present invention is a mixture of 70 to 80 parts by weight of natural rubber and 20 to 30 parts by weight of synthetic rubber, and the mixing ratios of the natural rubber and synthetic rubber are optimized, The effect of improvement can be maximized.

The present invention has obtained the effect of suppressing vibration and noise by using natural rubber and butadiene rubber as a raw material rubber. However, phenomena such as reduction of tensile strength and deterioration of thermal aging due to mixing with butadiene rubber, It is solved through selection of additives and content control.

Carbon black having an average particle diameter of 39 to 55 nm is used as the filler used in the present invention, and it is preferable to use 40 to 50 parts by weight with respect to 100 parts by weight of the raw rubber. When the carbon black is less than 39 nm, the vibration insulating performance is limited. When the carbon black is more than 55 nm, there is a limit to improvement in mechanical properties. When the amount of carbon black is less than 40 parts by weight, there is a limit in increasing hardness. When the amount of carbon black is more than 50 parts by weight, dispersion of carbon black is limited.

In the present invention, a carbon nanotube (a-CNT) into which at least one activator selected from the group consisting of a carboxyl group, a hydroxyl group, an ether group and an ester group is introduced is used. The carbon nanotubes (a-CNT) have a diameter of 10 to 25 nm, a length of 10 to 50 nm, a surface area of 150 to 250 m ² / g and an oxygen content of 3 to 7 wt% Is preferably used. More preferably, the carbon nanotube (a-CNT) has a carboxyl group (-COOH) and a hydroxyl group (-OH) in a weight ratio of 1: 3 to 4.

When carbon nanotubes having an activator containing 5 to 7% by weight of oxygen are used as a filler as in the present invention, not only the vibration insulation performance of the vibration proof rubber material is improved but also the mechanical properties such as tensile strength and elongation are satisfied It is effective to use 0.5 to 3 parts by weight based on 100 parts by weight of the starting rubber. When the carbon nanotubes are used in an amount less than 0.5 parts by weight, there is a limit to improvement in mechanical properties. When the carbon nanotubes are more than 3 parts by weight, dispersion of carbon nanotubes is limited.

In order to improve the heat resistance or fatigue performance of the antioxidant, 2-mercaptobenzimidazole, 2,2,4-trimethyl-1,2-dihydroquinoline (2,2,4- trimethyl-1,2-dihydroquinoline, N-phenyl-N'-isopropyl-p-phenylenediamine, and N, N 'substituted p-phenylene Diamine (N, N'-substituted phenylenediamine). The antioxidant is preferably used in an amount of 5 to 8 parts by weight based on 100 parts by weight of the starting rubber. When the amount is less than 5 parts by weight, heat resistance and ozone resistance are limited. When the amount is more than 8 parts by weight, Therefore, it is preferable to use it within the above range.

The activating agent activates the crosslinking accelerator. In the present invention, at least one selected from the group consisting of zinc oxide (ZnO) and stearic acid is used. The activator is preferably used in the range of 1 to 3 parts by weight based on 100 parts by weight of the raw rubber. If the amount of the activator is less than 1 part by weight, the sulfur crosslinking reaction is slowed down. If the amount is more than 3 parts by weight, the crosslinking reaction speed is too fast, and the productivity may be a problem.

The crosslinking agent uses sulfur. As sulfur vulcanizing agents, conventional vulcanizates with a high sulfur content may be used, but semi-efficient vulcanizates promoting sulfur bridging may be used to reduce the spacing between rubber molecular chains to improve heat resistance and crosslinking density Effect can be obtained. The sulfur crosslinking agent is preferably used in the range of 1 to 3 parts by weight based on 100 parts by weight of the raw rubber. When the amount of the sulfur crosslinking agent is less than 1 part by weight, the durability is lowered and the durability is unsuitable for application to the bush flow. If the amount is more than 3 parts by weight, the heat resistance at the use limit temperature condition may be deteriorated.

In addition, the present invention may further comprise a crosslinking accelerator, a delayed accelerator, and a super accelerator.

The crosslinking accelerator serves as an anti-reversion inhibitor, and includes hexamethylene-1,6-bis (thiosulfate), disodium salt, and dihydrate (dehydrate) may be used. The crosslinking accelerator is preferably used in an amount of 1 to 3 parts by weight based on 100 parts by weight of the raw rubber. When the amount of the crosslinking accelerator is less than 1 part by weight, the heat resistance and the crosslinking stability are limited. When the amount is more than 3 parts by weight, the crosslinking speed is slowed and the productivity is limited.

The sustained-release promoter serves to prevent the scorch phenomenon, and N-cyclohexyl-2-benzothiazole sulfonamide can be used. In this case, it is preferable to use 1 to 3 parts by weight of the perspiration promoter with respect to 100 parts by weight of the raw rubber. When the amount is less than 1 part by weight, improvement in tensile strength is limited. When the amount is more than 3 parts by weight, It is recommended to use it within the range.

The super-promoter serves as an activator, and tetramethyl thiuram disulfide may be used. It is preferable to use 1 to 3 parts by weight based on 100 parts by weight of the starting rubber. When the amount is less than 1 part by weight, improvement in mechanical properties is limited. When the amount is more than 3 parts by weight, It is good to use within.

INDUSTRIAL APPLICABILITY As described above, the vibration damping rubber composition of the present invention can be suitably used in various applications such as the composition of raw rubber, the composition of carbon black and carbon nanotubes used as fillers, the aging inhibitor, activator, crosslinking agent, crosslinking accelerator, delayed accelerator, , The mechanical properties such as tensile strength and elongation were satisfied, and the vibration insulating property due to the reduction of the material magnification was improved. Therefore, the anti-vibration rubber composition according to the present invention can improve the fuel economy and ride comfort in comparison with the conventional anti-vibration rubber.

Hereinafter, the present invention will be described in more detail with reference to examples. However, these examples are for illustrating the present invention, and the scope of the present invention is not limited thereto.

Manufacturing example  1: Ratio of optimum raw material rubber

The rubber compositions were mixed using a Brabender according to the composition and contents in Table 1 below, and the vibration proof rubbers of Production Examples 1-1 to 1-5 were prepared by a rubber compounding roll and a pressing method Not).

Anti-vibration rubber composition (unit: parts by weight) division Production Example 1-1 Production Example 1-2 Production Example 1-3 Production Example 1-4 Production Example 1-5 Raw rubber NR 100 90 80 70 60 BR - 10 20 30 40 Filler N550 45 45 45 45 45 Antioxidant MB One One One One One RD 1.5 1.5 1.5 1.5 1.5 3C One One One One One 77PD One One One One One Sunnoc One One One One One Activator ZnO 5 5 5 5 5 S / Acid 1.5 1.5 1.5 1.5 1.5 Cross-linking agent S One One One One One accelerant HTS 1.5 1.5 1.5 1.5 1.5 CZ One One One One One TMTD 1.2 1.2 1.2 1.2 1.2

division Explanation of compositional components in Table 1 Raw rubber NR (Natural rubber, natural rubber): SMR-CV60 (Malaysia) BR (butadiene rubber): KBR-01 (Kumho Petrochemical) Filler Carbon black N550 (Korea Corex) Carbon nanotube CM-95 (Hanwha Chemical) Antioxidant MB: 2-Mercaptobenzimidazole (Nurchem) RD: Polymerized 2,2,4-trimethyl-1,2-dihydroquinoline (Gifu Chemical) 3C: N-phenyl-N'-isopropyl-p-phenylenediamine (Kumho Monsanto) 77PD: N, N'-substituted p-phenylenediamine (LANXESS) Sunnoc (Seiko chemical) Activator ZnO: Zinc oxide (Korean zinc oxide) S / Acid: Stearic acid Sulfur bridging agent S: Sulfur (Sekwang Chemical) accelerant Crosslinking accelerator HTS: Hexamethylene-1,6-bis (thiosulfate), disodium salt, dehydrate (FLEXSYS) Delayed accelerator CZ: N-cyclohexyl-2-benzothiazole sulfonamide (Wushin Chemtech) Super accelerator TMTD: Tetramethylthiuram disulfide (Tri-Chem)

Experimental Example  1: Measurement of physical properties

The specimens prepared from the vibration-proofing rubbers of Production Examples 1-1 to 1-5 were measured for physical properties using the following test methods, and the measurement results are shown in Table 3 below.

(1) Hardness measurement: Performed according to KS M 6784.

(2) Measurement of tensile strength and elongation: Dumbbell type 3 was performed according to KS M 6782.

(3) Measurement of material dynamic magnification: Material dynamic tester was used to perform dynamically at 2% elongation at a frequency of 20%.

Physical property measurement result division Production Example 1-1 Production Example 1-2 Production Example 1-3 Production Example 1-4 Production Example 1-5 Hardness (Hs) 62 63 63 63 62 Tensile strength (kgf / cm2) 204 198 191 180 173 Elongation (%) 510 490 480 460 450 Material magnification 2.6 2.4 2.1 2.1 2.3

It can be seen from the results of Table 3 that 70 to 80 parts by weight of the natural rubber and 20 to 30 parts by weight of the butadiene rubber are effective as the raw rubber to improve the vibration insulation (reduce the dynamic magnification). However, it was confirmed that it is weak in terms of mechanical properties such as tensile strength and elongation.

Therefore, it is understood that the most effective compounding for improving vibration insulation is 70 to 80 parts by weight of natural rubber and 20 to 30 parts by weight of butadiene rubber.

Manufacturing example  2: Optimum use ratio of carbon nanotubes

Rubber compositions were mixed in accordance with the composition and contents in Table 4 using a Brabender, and the vibration proof rubbers of Production Examples 2-1 to 2-5 were prepared by a rubber compounding roll and a pressing method Not). At this time, the same components as those shown in Table 2 were used.

Anti-vibration rubber composition (unit: parts by weight) division Production Example 2-1 Production example 2-2 Production Example 2-3 Production example 2-4 Production example 2-5 Production Example 2-6 Raw rubber NR 80 80 80 80 80 80 BR 20 20 20 20 20 20 Filler
N550 45 40 40 40 40 40 CNT - 0.25 0.5 1.0 1.5 1.75 Antioxidant MB One One One One One One RD 1.5 1.5 1.5 1.5 1.5 1.5 3C One One One One One One 77PD One One One One One One Sunnoc One One One One One One Activator ZnO 5 5 5 5 5 5 S / Acid 1.5 1.5 1.5 1.5 1.5 1.5 Cross-linking agent S One One One One One One accelerant HTS 1.5 1.5 1.5 1.5 1.5 1.5 CZ One One One One One One TMTD 1.2 1.2 1.2 1.2 1.2 1.2

Experimental Example  2: Measurement of physical properties

The properties of the specimens produced in the vibration-proof rubbers of Production Examples 2-1 to 2-6 were measured in the same manner as in Experimental Example 1, and the measurement results are shown in Table 5 below.

Physical property measurement result division Production Example 2-1 Production example 2-2 Production Example 2-3 Production example 2-4 Production example 2-5 Production Example 2-6 Hardness (Hs) 63 63 64 64 65 65 Tensile strength (kgf / cm2) 191 187 195 207 200 189 Elongation (%) 480 470 500 520 510 480 Material magnification 2.1 2.2 2.0 2.1 2.0 2.2

The results of Table 5 show that when 0.5 to 1.5 parts by weight of general carbon nanotubes are added, the mechanical properties such as tensile strength and elongation are improved. As a result, it was found that the amount of carbon nanotubes most effective for improving mechanical properties was 0.5 to 1.5 parts by weight.

Through the above-described Production Examples 1 and 2 and Experimental Examples 1 and 2, it is possible to determine the optimum amount of the raw rubber and the carbon nanotube to be used.

Comparative Example  1 to 5 and Example  1-4

The rubber compositions were mixed using a Brabender according to the composition and contents in Table 6 below, and the vibration-damping rubbers of Comparative Examples 1 to 5 and Examples 1 to 4 were prepared through a rubber compounding roll and a pressing method (separately, Not used). At this time, the same components as those of Table 1 described in Table 2 were used except for carbon nanotubes.

Carbon nanotubes (CM-95, Hanwha Chemical), 500 mg, were added to 200 ml of a hydrochloric acid / sulfuric acid solution (150 ml of hydrochloric acid, 50 ml of sulfuric acid) Acid treatment for 6 hours, and heat treatment in a 800 ° C furnace for 6 to 24 hours. At this time, the diameter of the carbon nanobut is 10 to 25 nm, the length is 5 to 30 nm, and the surface area is 200 to 500 m ² / g.

For reference, the content (wt%) of the oxygen element contained in the carbon nanotube (a-CNT) into which the activator is introduced means a value measured by an X-ray photoelectron spectroscopy method.

Anti-vibration rubber composition (unit: parts by weight) division Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Comparative Example 3 Example 4 Comparative Example 4 Comparative Example 5 Raw rubber NR 80 80 80 80 80 80 80 80 80 BR 20 20 20 20 20 20 20 20 20 Filler N550 40 40 40 40 40 40 40 40 40 CNT 1.0 - - - - - - - - a-CNT ^{1 )} - 1.0 - - - - - - - a-CNT ^{2 )} - - 1.0 - - - - - - a-CNT ^{3 )} - - - 1.0 - - - - - a-CNT ^{4 )} - - - - 1.0 - - - - a-CNT ^{5 )} - - - - - 1.0 - - - a-CNT ^{6 )} - - - - - - 1.0 - - a-CNT ^{7 )} - - - - - - - 1.0 - a-CNT ^{8 )} - - - - - - - - 1.0 Antioxidant MB One One One One One One One One One RD 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 3C One One One One One One One One One 77PD One One One One One One One One One Sunnoc One One One One One One One One One Activator ZnO 5 5 5 5 5 5 5 5 5 S / Acid 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 Cross-linking agent S One One One One One One One One One accelerant HTS 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 CZ One One One One One One One One One TMTD 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1) 1 wt% of oxygen, and a-CNT having a 1: 4 weight ratio of a carboxyl group (-COOH) and a hydroxyl group (-OH) is used (temperature: 900 ° C, time: 360 minutes).
2) 3 wt% of oxygen, and a carboxyl group (-COOH) and a hydroxyl group (-OH) are used in a 1: 4 weight ratio of a-CNT (temperature: 800 ° C., time: 360 min).
3) 5 wt% of oxygen and a-CNT of 1: 4 weight ratio of carboxyl group (-COOH) and hydroxyl group (-OH) was used (temperature: 700 ° C., time: 360 minutes).
4) a-CNT having a weight ratio of 1: 4 of carboxyl group (-COOH) and hydroxyl group (-OH) was used (temperature: 600 ° C, time: 360 minutes).
5) 9 wt% of oxygen, and a carboxylate (-COOH) and hydroxyl group (-OH) were used in a 1: 4 weight ratio of a-CNT (temperature: 500 ° C, time: 360 min).
6) a-CNT having a weight ratio of 1: 3 of carboxyl group (-COOH) and hydroxyl group (-OH) was used (temperature: 700 ° C, time: 420 minutes).
(Temperature: 700 ° C, time: 480 minutes) in which 1: 2 weight ratio of carboxyl group (-COOH) and hydroxyl group (-OH) is used.
8) 5 wt% of oxygen, and a-CNT having a carboxyl group (-COOH) and a hydroxyl group (-OH) in a weight ratio of 1: 5 was used (temperature: 700 ° C., time: 300 min).

Experimental Example  3: Measurement of physical properties

The specimens produced from the vibration-proof rubbers of Comparative Examples 1 to 5 and Examples 1 to 4 were measured for physical properties in the same manner as in Experimental Example 1, and the measurement results are shown in Table 7 below.

Physical property measurement result division Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Comparative Example 3 Example 4 Comparative Example 4 Comparative Example 5 Hardness (Hs) 64 64 64 64 64 63 63 64 64 Tensile strength (kgf / cm2) 207 205 210 214 209 198 211 199 203 Elongation (%) 520 530 540 520 530 500 530 490 500 Material magnification 2.1 2.1 1.8 1.7 1.9 2.2 1.8 2.0 2.1

The results of Table 7 show that when the activated carbon nanotubes are used, the mechanical properties such as tensile strength and elongation as well as material co-efficient are improved as compared with the results of Table 6 (Production Example 2) I could confirm. In addition, in the case of using the carbon nanotubes into which the activator is introduced, compared with the case of using only carbon black (Production Example 1), since the use of carbon black is relatively small, the same or equivalent effect can be realized in terms of mechanical properties, Can also be realized.

Particularly, in Examples 1 to 3 using carbon nanotubes (a-CNT) having an activator containing an oxygen element in an amount of 3 to 7% by weight, compared with Comparative Examples 1 and 2, Value is more excellent.

In addition, Example 2 using a carbon nanotube having a 1: 4 weight ratio of a carboxyl group (-COOH) and a hydroxyl group (-OH), Comparative Example 4 having a weight ratio of 1: 2 and Comparative Example 5 having a weight ratio of 1: The carbon nanotubes having a carboxyl group and a hydroxy group at a weight ratio of 1: 3 to 4, even if they have oxygen elements of the same weight, are more excellent in terms of vibration insulation.

Therefore, the vibration damping rubber composition according to the present invention is characterized in that the filler contains carbon atom other than carbon black and oxygen element is contained in an amount of 3 to 7 wt%, and carbon nanomaterials containing at least one activator selected from the group consisting of carboxyl group, hydroxyl group, ether group, By adding a predetermined amount of the tube, there is an effect of improving the vibration insulation as well as satisfying the mechanical properties.

Claims (10)

A rubber composition comprising a raw rubber, a filler, an antioxidant, an activator and a crosslinking agent,
Wherein the raw material rubber comprises 70 to 80 parts by weight of natural rubber and 20 to 30 parts by weight of butadiene rubber,
Wherein the filler comprises 40 to 50 parts by weight of carbon black per 100 parts by weight of the raw rubber; 0.5 to 3 parts by weight of carbon nanotubes in which carboxyl groups (-COOH) and hydroxyl groups (-OH) are introduced at a weight ratio of 1: 3 to 4;
Wherein the rubber composition is a rubber composition.
The carbon nanotube according to claim 1, wherein the carbon nanotubes have a diameter of 10 to 25 nm, a length of 10 to 50 nm, a surface area of 150 to 250 m ² / g, an oxygen content of 3 to 7 wt% Wherein the rubber composition is a rubber composition.
delete The antioxidant according to claim 1, wherein the antioxidant is 2-mercaptobenzimidazole, 2,2,4-trimethyl-1,2-dihydroquinoline dihydroquinoline, N-phenyl-N'-isopropyl-p-phenylenediamine and N, N 'substituted p-phenylenediamine substituted p-phenylenediamine), and is contained in an amount of 5 to 8 parts by weight based on 100 parts by weight of the raw rubber.
[2] The method according to claim 1, wherein the activator is at least one selected from the group consisting of zinc oxide (ZnO) and stearic acid, and 1 to 3 parts by weight based on 100 parts by weight of the raw rubber (1).
The anti-vibration rubber composition according to claim 1, wherein the crosslinking agent is sulfur, and the crosslinking agent is included in an amount of 1 to 3 parts by weight based on 100 parts by weight of the raw rubber.
The composition of claim 1, wherein the rubber composition is selected from the group consisting of hexamethylene-1,6-bis (thiosulfate), disodium salt, and dihydrate. And 1 to 3 parts by weight of at least one crosslinking accelerator selected from the group consisting of 100 parts by weight of the raw rubber.
The rubber composition according to claim 1, wherein the rubber composition further comprises 1 to 3 parts by weight of a sustained-release promoter, which is N-cyclohexyl-2-benzothiazole sulfonamide, based on 100 parts by weight of the raw rubber Wherein the rubber composition is a rubber composition.
The anti-vibration rubber composition according to claim 1, wherein the rubber composition further comprises 1 to 3 parts by weight of a super accelerator which is tetramethyl thiuram disulfide based on 100 parts by weight of the raw rubber.
An anti-vibration rubber characterized by being manufactured from the anti-vibration rubber composition of any one of claims 1, 2, and 4 to 9.

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