KR20140057030A - Lightweight rubber composition and method for manufacturing thereof - Google Patents

Abstract

The present invention relates to a light weight rubber composition maintaining properties of tensile strength, elongation, etc. and significantly reducing its weight compared to a conventional composition; and to a manufacturing method thereof. By significantly reducing the weight of the rubber composition manufactured by maintaining mechanical properties compared to the conventional rubber composition, the composition can be widely used in the field of tire and a rubber composition requiring light weight application.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lightweight rubber composition,

The present invention relates to a lightweight rubber composition and a method for manufacturing the same, and more particularly, to a lightweight rubber composition capable of increasing energy efficiency by greatly reducing mass while maintaining physical properties.

The biggest issue in the automotive industry today is the reduction in fuel consumption. As a result of this effort, we are focusing on the weight reduction of automotive materials along with the soybeans of hybrid vehicles, and weight reduction of tires is also becoming more important.

Rubber materials used in tire manufacturing require low density and high performance. Research is underway to develop materials that have low density or excellent physical properties compared to conventional materials while maintaining the mechanical properties of conventional rubber materials for tires.

Conventionally, the thickness of a rubber composition for a tire manufactured to reduce the weight of a tire for automobiles has been reduced, or the weight of a mixing processant such as a filler such as carbon black is less than that of a conventional filler as in Korean Patent No. 10-0303887 To reduce weight. Alternatively, a composite composition is prepared by mixing a plastic material and a rubber material as in Korean Patent Laid-Open Publication No. 10-2012-0106489, and then the inner liner is formed into a film, and a tire is manufactured using the inner liner.

However, such methods have been problematic in that the physical properties such as tensile strength, elongation, breaking strength, and the like, which are generated when the amount of the processing aid is reduced, are reduced.

Korean Registered Patent No. 10-0303887 (July 16, 2001) Korean Patent Publication No. 10-2012-0106489 (September 26, 2012)

The present invention provides a lightweight rubber composition which is greatly reduced in weight compared to conventional compositions while maintaining physical properties such as tensile strength and elongation, and a method for producing the same.

Another object of the present invention is to provide a lightweight rubber composition including a hollow glass spherical body which is easily dispersed in a rubber composition by increasing the dispersibility of the hollow glass spheres used as a filler and a method for producing the same.

The present invention relates to a lightweight rubber composition and a method for producing the same.

One aspect of the present invention relates to a rubber composition comprising a rubber component comprising any one selected from natural rubber and synthetic rubber or a mixture thereof and a hollow glass sphere surface-treated with carbon black, vulcanizing agent, vulcanization accelerator, vulcanization accelerator, The present invention relates to a lightweight rubber composition.

Another aspect of the present invention is an invention relating to a lightweight rubber composition comprising one or more additives selected from a softener, a tackifier, a modifier, an anti-scorch agent, a neutralizer and a light stabilizer.

Another aspect of the present invention is

a) treating a hollow glass sphere with one or more alkali selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, ammonia and sodium carbonate to form a hydroxyl group on the surface of the hollow glass spheres;

b) treating the hollow glass spheres with a silane compound; And

c) mixing and polymerizing the surface-treated hollow glass spheres with a rubber component, a vulcanizing agent, a vulcanization accelerator, a vulcanization promoting assistant and carbon black to prepare a rubber composition;

By weight based on the weight of the rubber composition.

Hereinafter, a lightweight rubber composition and a method for producing the same according to the present invention will be described in detail.

As a result of intensive researches to achieve weight reduction of rubber products, the present inventors have found that when a hollow glass microsphere (HGM) is used as a filler instead of carbon black used as a filler, the density of carbon black 1.8g / cm ³ while inde discovered show a state in which the density of the HGM does not inhibit the physical properties while having a density of 1/3 to 1/18 as compared to carbon black in the range of 0.1 to 0.8g.cm ^3. However, in the case of HGM, there is a disadvantage that the rubber mixture does not disperse well, but when the HGM is surface-treated with the silane compound, it is found that the dispersion is smooth, thereby completing the present invention.

A method for producing a lightweight rubber composition according to the present invention comprises

a) treating a hollow glass sphere with one or more alkali selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, ammonia and sodium carbonate to form a hydroxyl group on the surface of the hollow glass spheres;

b) treating the hollow glass spheres with a silane compound; And

c) mixing and polymerizing the surface-treated hollow glass spheres with a rubber component, a vulcanizing agent, a vulcanization accelerator, a vulcanization promoting assistant and carbon black to prepare a rubber composition.

In the present invention, the hollow glass spheres may be those prepared by forming pores in a molding step or forming pores through post-baking including polymers, and preferably have an average particle size of 10 to 150 μm and a density of 0.1 to 0.8 g / cm < ³ >, an hydrostatic pressure of 1 to 10 MPa, and an oil absorption of 0.2 to 0.8 cc / 100 g may be used to maintain the physical properties of the rubber composition.

The hollow glass spheres should be surface modified to improve their dispersibility when mixed with the rubber composition. In the present invention, the hollow glass spheres can be surface-modified using a silane compound. At this time, in order to bond the hollow glass beads and the silane compound, it is preferable to form a hydroxyl group (OH) on the surface of the hollow glass spheres and then polymerize the hydroxyl group and the silane compound.

In step a), the alkali is treated to form a hydroxyl group on the surface of the hollow glass bead. The alkali is not limited to any kind as long as it is generally used in the art, and preferably one or two or more alkali selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, ammonia and sodium carbonate is preferably used. The alkali is preferably in the form of a solution, and preferably has a concentration of 0.1 to 5 mol. The alkali treatment step is preferably carried out at a pH of 8 to 14 and at a temperature of 80 to 100 DEG C for 2 to 3 hours.

After the hydroxyl group is formed on the surface of the hollow glass spheres by using alkali, the surface treatment is performed using the silane compound through the step b). The silane compound is preferably an aminosilane containing a primary aminosilane, a secondary aminosilane, a tertiary aminosilane, a quaternary aminosilane and a multi-podal silane, Aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, N- (3-acryloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane (N- 3-acryloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane, N- (3-acryloxy-2-hydroxypropyl) -3-aminopropyltrimethoxysilane, N- 3-aminopropyltrimethoxysilane), N- (3-acryloxy-2-hydroxypropyl) -3-aminopropyltripropoxysilane, N- Aminoethyl-3-aminopropyl) trimethoxysilane, N- (2-aminoethyl-3-aminopropyl) It is preferable to use any one or two or more silane compounds selected from aminoethylaminopropyltrimethoxysilane and N- (2-aminoethyl-3-aminopropyl) triethoxysilane. The silane compound is not properly grafted on the surface of the hollow glass spheres when the silane compound is added in an amount of less than 90 parts by weight and the silane compound exceeds 110 parts by weight The addition of the silane compound within the above range is preferable because it is a loss in terms of cost since there is no difference in physical properties as compared with the addition in the above range.

After the surface treatment of the hollow glass spheres is completed, the rubber composition is prepared by mixing and polymerizing with the rubber component, the vulcanizing agent, the vulcanization accelerator, the vulcanization accelerator and the carbon black in the step c).

The hollow glass beads preferably contain 5 to 15 parts by weight per 100 parts by weight of the rubber component. When the hollow glass spheres are contained in an amount of less than 5 parts by weight, the lightweight properties required in the present invention are not exhibited properly, and when the hollow glass spheres are contained in an amount exceeding 15 parts by weight, the tensile strength is rapidly decreased.

The rubber component is not limited to natural rubber, synthetic rubber, or the like as long as it is used in the art to produce rubber composition, and includes all commercially available rubber.

The natural rubber may be a polyisoprene which is an isoprene homopolymer. Examples of the natural rubber include polyisoprene such as isoprene rubber (IR), styrene-butadiene rubber (SBR), butadiene rubber Epoxy rubbers (ENR), thermoplastic natural rubbers (TPNR), and liquid natural rubbers may also be used.

The synthetic rubber is not particularly limited as long as it is a non-crystalline, thermoplastic polymer material generally used in the art, and preferably is a chloroprene rubber (CR), an acrylonitrile-butadiene rubber (nitrile rubber (NBR), hydrogenated nitrile rubber (HNBR), ethylene-acrylic rubber (AEM), chlorosulphonated polyethylene rubber (CSM), fluorocarbon (EPM), polyurethane urethane (AU), polyether urethane (urethane), polyurethane urethane (urethane), fluorocarbon rubber (FPM), vinyl-methyl silicone rubber (VMQ), epichlorohydrin rubber polyether urethane, EU) and thermoplastic polyether-ester (YBPO), isoprene rubber (IR), styrene-butadiene rubber non-polar hydrocarbon rubbers such as ethylene-propylene-diene rubber (EPDM), ethylene-propylene rubber (EPM), and the like, bromobutyl rubber , Butadiene rubber (BR), isobutene-isoprene rubber (butyl rubber), IIR) such as chlorobutyl rubber (CIIR), polyarylate rubber one or more selected from polyacrylate rubber (ACM), perfluorocarbon rubber (FFKM), fluorosilicone rubber (FMQ), and the like can be used.

The vulcanizing agent is not limited to any kind as long as it is used in the art as a rubber crosslinking agent such as an inorganic vulcanizing agent and an organic vulcanizing agent.

Examples of the inorganic vulcanizing agent include inorganic vulcanizing agents such as powdered sulfur, colloidal sulfur, precipitated sulfur, and insoluble sulfur. The organic vulcanizing agents include 4,4'-dithiodimorpholine, N, N'-dithio-bis- (hexahydro-2H-azepinone-2), tetramethyl-thiuram disulfide, TMTD), tetraethyl-thiuram disulfide (TETD), tetrabutyl-thiuram disulfide (TBTD), P-Quinone-dioxine, dibenzoyl-para- (Dibenzoyl-P-quinonedioxine), tetrachloro-p-benzoquinone, and the like, but the present invention is not limited thereto.

The vulcanizing agent is preferably used in an amount of 0.5 to 2.0 parts by weight based on 100 parts by weight of the rubber component. When the vulcanizing agent is contained in an amount of less than 0.5 part by weight, it becomes unhulled, while when it exceeds 2.0 parts by weight, it becomes vulcanized.

The vulcanization accelerator promotes the vulcanization power of the vulcanizing agent to shorten the vulcanization time, lower the vulcanization temperature, reduce the vulcanizing agent consumption, and improve the quality. The vulcanization accelerator may be selected from the group consisting of mercaptobenzothiazole, dibenzolthiazyl disulfide, N-cyclohexyl-benzothiazyl-2-sulfenamide (CBS) N-oxydiethylene-benxothiazyl sulfenmide, N-tert, Butyl-2-benxothiazyl sulfenamide, Zinc salt of Mercaptobenzothiazole, Dibenzothiazyl disulfide, Sodium dimethyldithiocarbamate, Tetramethyl-thiuram disulfide, Teramethyl-thiuram monosulfide Zinc dimethyldithiocarbamate, sodium diethyldithiocarbamate, Tertraethyl-thiuram disulfide, diethyl di-thiuram disulfide, It is also possible to use zinc diethyldithiocarbamate, sodium dibutyl dithio carbamate, tetrabutyl-thiuram disulfide, di-n-butyl-dithiocarbamate -butyl-dithiocarbamate) may be used, but the vulcanization accelerator is not limited thereto.

The vulcanization accelerator is preferably used in an amount of 1.0 to 3.0 parts by weight based on 100 parts by weight of the rubber component. If the vulcanization accelerator is contained in an amount of less than 1.0 part by weight, unvulcanized sulfur is obtained, and when it exceeds 3.0 parts by weight, vulcanization is attained.

The vulcanization accelerator is used in combination with a vulcanization accelerator to activate the vulcanization accelerator and to further complete the accelerating reaction. Preferably, the zinc oxide (ZnO), active zinc, surface-treated zinc oxide, zinc paste, composite zinc oxide, zinc carbonate (ZnCO _3), magnesium (MgO), Lisa not oxide (litharge, lead monoxide), platform ( red lead, potassium hydroxide (KOH), stearic acid, oleic acid, lauric acid, zinc stearate, dibutylammonium-oleate dibutyl ammonium oleate) and the like are preferably used.

The vulcanization accelerator aid is preferably added in an amount of 1.0 to 2.5 parts by weight based on 100 parts by weight of the rubber component. Or when zinc oxide and stearic acid are used together, it is preferable to use 2.0 to 2.5 parts by weight and 0.5 to 1.5 parts by weight, respectively. In this case, the zinc oxide and stearic acid work together to form an effective complex with the vulcanization accelerator, thereby promoting the crosslinking action.

The carbon black may be used as a reinforcing filler. The carbon black is not limited to the carbon black for rubber, and preferably has a DBP (dibutyl phthalate) oil absorption of 60 to 150 cc / 100 g, an iodine adsorption of 20 to 150 mg / g and an average particle diameter of 10 to 500 nm.

The carbon black is preferably used in an amount of 30 to 80 parts by weight based on 100 parts by weight of the rubber component. When the amount of carbon black is less than 30 parts by weight, the physical properties are deteriorated. When the amount of carbon black is more than 80 parts by weight, a dispersion problem occurs in the compounding.

Further, the reinforcing filler of the present invention may further include a filler other than carbon black. The filler is not limited to the type as long as it is used in rubber formulations in the art. Preferably, the filler is selected from the group consisting of white carbon, surface-treated calcium carbonate such as halogenated silicon and sodium silicate, A reinforcing inorganic filler, a clay system such as a bag clay, a dexclay and a sulfur clay, a talc such as calcium carbonate, manganese dioxide and silicon dioxide, and a non-rigid inorganic filler including silica and diatomaceous earth such as aluminum and calcium It is good.

The lightweight rubber composition according to the present invention may further contain any one or two or more additives selected from a softening agent, a tackifier, a modifier, an anti-scorch agent, a neutralizer and a light stabilizer within a range not impairing the physical properties of the composition.

The softening agent or plasticizer in the additive may be added to the rubber component to soften the rubber to give plasticity and facilitate processing. Or to lower the hardness of the vulcanized rubber. The softening agent is not limited to any type of softening agent added to general rubber components, but usually a vegetable softening agent and a mineral softening agent can be used.

The mineral softener may be any one selected from the group consisting of paraffin oil, naphthene oil, aromatic oil, and combinations thereof. In this rubber compounding, aromatic oils show the best effect, while paraffin oils It is preferable to use RAE (Residual Aromatic Extracts) or the like which has a good effect because it is inhibited by the environmental regulation of the rubber such as oil and naphthenic oil. The RAE preferably has an aromatic hydrocarbon content of 60 to 80 wt%, a boiling range of 380 DEG C or less, a density at 15 DEG C of 0.96 to 1.02 g / mL, and a pour point of 20 DEG C or less.

The plant-based softening agent may be castor oil, linseed oil, pine oil or the like, and is not limited to any kind of plant-based softening agent used for producing a common rubber component.

The softening agent generally affects the compatibility with the rubber used in the rubber component, the rubber workability, the low temperature characteristics, the workability, the antifouling property, the vulcanization speed, the elasticity, the exothermic property, etc., Accordingly, the kind of softening agent can be appropriately selected. The softening agent is preferably added in an amount of 5 to 10 parts by weight based on 100 parts by weight of the rubber component.

The tackifier is a drug for increasing the tackiness of the surface and is not limited to any kind as long as it is compatible with the rubber component and can maintain the tackiness for a long time. Preferably, coumarone-indene resins, terpene-phenolic resins, polybutenes, hydrogenated ester of resins and the like are used. The tackifier is preferably contained in an amount of 3 to 5 parts by weight based on 100 parts by weight of the rubber component, since it does not affect the physical properties of the rubber composition including the tensile strength.

The modifier may be used to improve physical properties and processability of the vulcanizate, and preferably P, P'-diaminodiphenylmethane (DAPM), N- (2-methyl- (2-methyl-2-nitropropyl) -4-nitrosoaniline, liquid polybutadiene, polyisobutyrene and the like are preferably used. Adding the modifier in an amount of 1 to 10 parts by weight based on 100 parts by weight of the rubber component is preferable because it can improve the caking resistance without impairing the impact resistance of the rubber composition.

The scorch preventing agent serves to prevent the vulcanization reaction of the rubber component from occurring in the rubber manufacturing working stage prior to the vulcanization process, and is not limited to the type normally used in the art. N-nitrosodiphenylamine, N-nitrosophenyl-B-naphthalamine, N-nitrosophenyl-B-naphthalamine, It is preferable to use a nitroso compound. The scorch preventing agent is preferably included in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of the rubber component.

The anti-fouling agent is a substance which imparts plasticity to the rubber component used in the present invention and has a uniform dispersion and viscosity. The mixture of 2,3,4,5,6-pentachlorobenzenethiolate and zinc filler, preferably a mixture of 2,3,4,5,6-pentachlorobenzenethiolate such as Renacit-iV, and Struktol A86, 40MS, or the like is preferably used, but not limited thereto.

It is preferable to add 0.1 to 0.3 parts by weight of the antifogging agent to 100 parts by weight of the rubber component. When the amount is less than 0.1 parts by weight, the addition amount is too small to properly disperse the rubber component. When the addition amount is more than 0.3 parts by weight, the malfunctioning agent may chemically cut rubber molecules, resulting in deterioration of physical properties.

The lightweight rubber composition according to the present invention can be produced by a conventional method in the art. As the apparatus for producing a lightweight rubber composition, a mixing and crosslinking process can be preferably performed using a roll mill, a Banbury mixer, an internal mixer, a continuous mixer, a kneader or a mixed extruder, but the present invention is not limited thereto.

In the mixing process, rubber raw materials, additives and fillers are mixed first except for vulcanizing agents, vulcanization accelerators, vulcanization accelerators and the like. At this time, the temperature is preferably 100 to 140 占 폚, and the mixing is preferably performed for 10 to 20 minutes. Then, vulcanizing agents, vulcanization accelerators, vulcanization accelerators, etc. are mixed. In the crosslinking step after mixing, it is preferable to lower the temperature to 40 to 60 DEG C and mix for 5 to 15 minutes.

The lightweight rubber composition according to the present invention has hollow glass spheres instead of the carbon black used as a filler and has improved dispersibility by modifying the surface of the hollow glass spheres in order to improve dispersibility between rubber and hollow glass spheres , It is considered that it is widely used in the field of using rubber composition which requires reduction of the weight of the rubber composition to be produced, while maintaining the mechanical properties as compared with the existing rubber composition, thereby requiring a tire and light weight.

1 shows a surface treatment process of a hollow glass bead according to the present invention.
Figure 2 shows FT-IR results of surface-treated hollow glass spheres prepared according to the present invention.
Fig. 3 shows SEM results of the hollow glass spheres. Fig. 4 (a) shows a hollow glass spheres which were not surface-treated, and Fig.
Fig. 4 shows SEM results of the rubber composition prepared according to the present invention. Fig. 4 (a) shows the rubber composition of Comparative Example 2, Fig. 4 (b) shows Example 1, and Fig.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. The following examples and comparative examples are merely illustrative examples of the method of the present invention, and thus the present invention is not limited to the following examples and comparative examples.

The physical properties of the rubber composition prepared according to the following examples were measured as follows.

(The tensile strength)

Tensile strength was measured according to ASTM D412 by using a tensile tester (Lloyd LR10 K) until the specimen was pulled out, and the tensile strength was measured by the cross-sectional area before applying the maximum load and load until the other end of the specimen. to be.

(Elongation at break)

The elongation length of the dumbbell specimen according to ASTM D412 until the specimen was broken in a tensile tester (Lloyd LR10 K) was measured, and the elongation length / length of the specimen before the test was calculated and expressed in%.

(Modulus at 100%, 200%, 300%)

Tensile strength of the specimens was measured in MPa when the specimens were stretched at 100%, 200% and 300% of the initial length in a tensile tester (Lloyd LR10 K) according to ASTM D412.

(density)

The mass per unit volume of the rubber was measured with a density meter (DME-220HE) according to KS M ISO 23529 and expressed in g / cm ³ .

[Production Example 1]

5 g of hollow glass microspheres (HGM-im30k, 3M Corp) were prepared to prepare a surface-modified hollow glass spheres, and 200 mL of an aqueous sodium hydroxide solution having a molar concentration of 0.5 mol / Lt; / RTI > After the treatment, the hollow glass spheres were washed with water and dried. The mixture was then charged with 100 ml of cyclohexane and 5 g of 3-aminopropyltriethoxysilane, and the mixture was grafted at 60 ° C for 60 minutes to be reformed with HGM-NH ₂ . The unmodified HGM and the modified HGM-NH ₂ were compared with the FT-IR of FIG. 2 and the SEM of FIG. 3, respectively.

FIG. 2 shows that HGM-NH ₂ contains an amine group. FIG. 3 shows that the surface of the HGM is covered with the silane compound.

[Examples 1 to 3]

Epoxidized natural rubber (ENR) (San-Thap International Co., ENR50), RAE (Residual Aromatic Extracts) (shell), sheet ZnO (chlorinated butyl rubber) (average particle size 5㎛, an average thickness of 35nm), stearic acid, N- cyclohexyl-produced through benzothiazol quality sulfene amide (CBS), calcium carbonate (CaCO _3), carbon black (CB) (CoraxN660) and Preparation 1 The prepared HGM-NH ₂ was prepared at the composition ratios shown in Table 1 below, mixed at 120 ° C for 15 minutes with an internal mix, cooled to 50 ° C and mixed with sulfur vulcanized with sulfur for 10 minutes.

The mixed composition was dynamically crosslinked at 160 DEG C for 25 minutes using a hot press to prepare a rubber composition. The prepared rubber composition was used to prepare specimens, and physical properties thereof were measured and shown in Table 2 below.

[Comparative Example 1]

Except that 20 parts by weight of HGM-NH ₂ was added as shown in Table 1 below. The prepared rubber composition was used to prepare specimens, and physical properties thereof were measured and shown in Table 2 below.

[Comparative Example 2]

Except that HGM-NH ₂ was not added as a filler but only carbon black was used. The prepared rubber composition was used to prepare specimens, and physical properties thereof were measured and shown in Table 2 below.

[Table 1]

[Table 2]

As shown in Table 2, in Example 2 containing 45 parts by weight of carbon black and 10 parts by weight of hollow glass spheres, the tensile strength was slightly reduced as compared with Comparative Example 2 which did not include hollow glass spheres, Mechanical properties were found to be good. It can also be seen that the density is lower than that of Comparative Example 2 at the density.

In addition, in Comparative Example 1, the elongation at break was increased and the density was decreased as compared with Example 2, but the tensile strength was only about 60% as compared with Example 2, and the tensile strength was drastically decreased as the amount of the hollow glass spheres increased .

It was also confirmed that the dispersion results of the glass hollow spheres were more smoothly dispersed than in the case of Example 1 (B in Fig. 4) and the case of Example 2 (Fig. 4C) as shown in Fig.

Claims (12)

1. A lightweight rubber composition comprising a rubber component comprising at least one selected from natural rubber and synthetic rubber, or a mixture thereof, and hollow glass spheres surface-treated with carbon black, a vulcanizing agent, a vulcanization accelerator, a vulcanization accelerator and a silane compound. The method according to claim 1,
The hollow glass bead has an average particle size of 10 to 150 탆, a density of 0.1 to 0.8 g / cm ³ , a hydrostatic pressure of 1 to 10 MPa, and an oil absorption amount of 0.2 to 0.8 cc / 100 g. The method according to claim 1,
Wherein the silane compound is any one or two or more aminosilanes selected from first to fourth amino silane or polyaminosilane. The method of claim 3,
Aminopropyltriethoxysilane, N- (3-acryloxy-2-hydroxypropyl) -3-aminopropyltriethoxysilane, N- Hydroxypropyl) -3-aminopropyltrimethoxysilane, N- (3-acryloxy-2-hydroxypropyl) (3-aminopropyl) trimethoxysilane, N- (2-aminoethyl-3-aminopropyl) triethoxysilane and aminoethylaminopropyltrimethoxysilane. The method according to claim 1,
The rubber component may be at least one selected from the group consisting of natural rubber, butadiene rubber, chloroprene rubber, isobutene-isoprene rubber, isoprene rubber, acrylonitrile-butadiene rubber, hydrogeneate-nitrile rubber, styrene-butadiene rubber, polyacrylate rubber, , A chlorosulfonate-polyethylene rubber, an ethylene-propylene-diene rubber, an ethylene-propylene rubber, a fluorocarbon rubber, a perfluorocarbon rubber, a vinyl- methyl silicone rubber, a fluoro silicone rubber, an epichlorohydrin rubber, Ester urethanes, polyether urethanes, and thermoplastic polyester-esters. The method according to claim 1,
The carbon black has an iodine adsorption amount of 20 to 150 mg / g, a DBP oil absorption of 60 to 150 cc / 100 g, and an average particle diameter of 10 to 500 nm. 7. The compound according to any one of claims 1 to 6,
Wherein the composition further comprises one or more additives selected from a softener, a tackifier, a modifier, an anti-scorch agent, a neutralizer and a light stabilizer. a) treating a hollow glass sphere with one or more alkali selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, ammonia and sodium carbonate to form a hydroxyl group on the surface of the hollow glass spheres;
b) treating the hollow glass spheres with a silane compound; And
c) mixing and polymerizing the surface-treated hollow glass spheres with a rubber component, a vulcanizing agent, a vulcanization accelerator, a vulcanization promoting assistant and carbon black to prepare a rubber composition;
≪ / RTI > 9. The method of claim 8,
Wherein the surface treatment is performed by adding 5 to 15 parts by weight of a silane compound to 100 parts by weight of the hollow glass spheres. 9. The method of claim 8,
The rubber component may be at least one selected from the group consisting of natural rubber, butadiene rubber, chloroprene rubber, isobutene-isoprene rubber, isoprene rubber, acrylonitrile-butadiene rubber, hydrogeneate-nitrile rubber, styrene-butadiene rubber, polyacrylate rubber, , A chlorosulfonate-polyethylene rubber, an ethylene-propylene-diene rubber, an ethylene-propylene rubber, a fluorocarbon rubber, a perfluorocarbon rubber, a vinyl- methyl silicone rubber, a fluoro silicone rubber, an epichlorohydrin rubber, Ester urethane, polyether urethane, and thermoplastic polyester-ester. 9. The method of claim 8,
Wherein the carbon black has an iodine adsorption amount of 20 to 150 mg / g, a DBP oil absorption of 60 to 150 cc / 100 g, and an average particle diameter of 10 to 500 nm. 9. The method of claim 8,
Wherein one or more additives selected from a softener, a tackifier, a modifier, an anti-scorch agent, a neutralizer and a light stabilizer are further added to the step c).

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