KR100914495B1 - Rubber composition for tire having sleepiness prevention effect - Google Patents

Abstract

A rubber composition for tire is provided to prevent sleepiness by emitting incense with sleepiness prevention effect and to contribute to safe operation of an operator. A rubber composition for tire having sleepiness prevention effect comprises a base rubber 100.0 parts by weight, a mixture 0.5~50 parts by weight mixed with an anti-sleeping agent and a retention agent, and filler 30~95 parts by weight. The agent for sleepiness prevention is at least one selected from the group consisting of camphor and thymol. The retention agent is at least one selected from the group of ambergris, coumarin, heliotrope, benzoinum, sandal-tree oil. The filler is at least one selected from the group of syndiotactic-1,2-polybutadiene, titanium dioxide, clay, layered silicate, tungsten, talc and plate-like graphite.

Description

Rubber composition for tire having sleepiness prevention effect {Rubber composition for tire having sleepiness prevention effect}

The present invention relates to a rubber composition for tires having an anti-drowsiness effect, and more particularly, to a rubber composition for tires having an anti-drowsiness effect, including a mixture of a drowsiness inhibitor and a retention agent in a tire rubber composition.

The driver needs a great deal of concentration while the car is driving, and the driver's drowsy drowsy driving causes damage to the driver as well as others, mainly because it causes a major accident linked to other vehicles.

In order to solve this problem, the driver simply chews gum or melts candy in his mouth to prevent drowsiness, and in addition to this method, a brain wave detector is used as a more advanced means while driving a car. If it is determined that the driver's body condition is determined by the driver's brain wave measurement and the driver's drowsy driving, methods have been proposed to perform various operations to prevent the driver's drowsiness. That is, a method of automatically opening a window of a vehicle, vibrating a driver's chair, or controlling the volume of a car audio has been proposed.

However, the drowsiness prevention methods as described above may cause a problem in accuracy of judging a physical condition, and when a driver is embarrassed by a sudden change in driving environment, a dangerous situation may be caused by a driving mistake.

The present invention is to provide a tire comprising a rubber composition for the drowsiness preventing effect, a rubber made of the rubber composition, the rubber made of the rubber composition.

The present invention provides a rubber composition for a tire, by adding a drowsiness-preventing component to use the rubber composition of the rubber as a component of the tire to allow the driver to emit a drowsy aroma from the tire containing the drowsiness-preventing component. To provide a tire comprising a rubber composition, a rubber made of the rubber composition, a rubber made of the rubber composition to enable safe driving.

The present invention can provide a tire comprising a rubber composition for preventing drowsiness, a rubber made of the rubber composition, and a rubber made of the rubber composition.

The tire including the rubber made of the rubber composition of the present invention has an effect of preventing drowsy driving, which caused serious obstacles when driving for a long time, thereby contributing to the driver's safe operation.

The present invention relates to a rubber composition for a tire having a drowsiness preventing effect, including a mixture of a drowsiness inhibitor and a retention agent in a rubber composition for a tire.

In the present invention, what can exhibit the drowsiness preventing effect is defined as an anti-drowsiness agent.

The rubber composition for a tire of the present invention may include 0.5 to 50 parts by weight of a mixture of a drowsiness inhibitor and a retention agent based on 100 parts by weight of the rubber composition for a tire.

In the present invention, the raw material rubber may be any one or more selected from the group of natural rubber and synthetic rubber.

In the rubber composition for tires of the present invention, the raw rubber may be a mixed rubber in which the natural rubber and the synthetic rubber are mixed in a weight ratio of 1: 9 to 9: 1 when the mixed rubber is mixed with natural rubber.

Synthetic rubber that can be used as a component of the raw material rubber is styrene butadiene rubber (SBR), modified styrene butadiene rubber, butadiene rubber (BR), modified butadiene rubber, chlorosulfonated polyethylene rubber, epichlorohydrin rubber, fluorine rubber, Silicone rubber, nitrile rubber, hydrogenated nitrile rubber, nitrile butadiene rubber (NBR), modified nitrile butadiene rubber, chlorinated polyethylene rubber, styrene ethylene butylene styrene (SEBS) rubber, ethylene propylene rubber, ethylene propylene diene (EPDM) rubber , Hypalon rubber, chloroprene rubber, ethylene vinyl acetate rubber, acrylic rubber, hydrin rubber, vinyl benzyl chloride styrene butadiene rubber, bromomethylstyrene butyl rubber, maleic acid styrene butadiene rubber, carboxylic acid styrene butadiene rubber, epoxy isoprene Rubber, maleic acid ethylene propylene rubber, carboxylic acid nitrile butadiate It may be at least one selected from the group consisting of rubber and BIMS (brominated polyisobutyl isoprene-co-paramethyl styrene).

As an example of the raw rubber, styrene butadiene rubber (SBR) having a vinyl content of 50 to 60% and a styrene content of 10 to 15% may be used.

As an example of the raw rubber, styrene butadiene rubber having a vinyl content of 65 to 75% and a styrene content of 20 to 25% may be used.

Examples of the raw material rubbers include styrene butadiene rubber (SBR) having a vinyl content of 50 to 60%, a styrene content of 10 to 15%, and a styrene butadiene rubber having a vinyl content of 65 to 75% and a styrene content of 20 to 25%. Mixed rubber can be used.

As an example of the raw material rubber, styrene butadiene rubber (SBR) having a vinyl content of 50 to 60%, a styrene content of 10 to 15%, a vinyl content of 65 to 75%, and a styrene content of 20 to 25 in 100 parts by weight of the raw material rubber Mixed rubbers containing styrene butadiene rubber (%) in a weight ratio of 1: 9 to 9: 1 may be used.

In order to show the drowsiness-preventing effect in the rubber composition for tires of the present invention, a mixture of a drowsiness inhibitor and a retention agent is added to the rubber composition for tires.

In the mixture in which the drowsiness inhibitor and the retention agent are mixed, an drowsiness inhibitor may be used that exhibits a drowsiness preventing effect.

In the mixture of the drowsiness inhibitor and the retention agent, a fixative may be used to increase the persistence of the drowsiness agent by keeping the rate of volatilization of the drowsiness agent constant.

As the mixture in which the drowsiness inhibitor and the retention agent are mixed, a drowsiness inhibitor: a retention agent is mixed in a weight ratio of 1 to 9: 9 to 1.

As the mixture in which the drowsiness inhibitor and the retention agent are mixed, a mixture of the drowsiness inhibitor and the retention agent in a weight ratio of 5 to 9: 1 to 5 may be used.

The anti-drowsiness agent may use any one or more herbs selected from the group of menthol, camphor and thymol.

The anti-drowsiness herb can be used in the form of powder, hot water extract or organic solvent extract.

An example of the herbal hot water extract that can be used as the anti-drowsiness agent is 3 to 10 times the weight of the anti-drowsiness hub weight, and when the anti-drowsiness agent is added to purified water at a temperature of 80 to 100 ° C. and becomes 5 to 50% of the volume of the first purified water. You can use the extracted to.

As an example of the organic solvent extract of the anti-drowsiness hub, it is 2 to 8 times the weight of the anti-drowsiness hub, and when the anti-drowsiness hub is added to the organic solvent at a temperature of 40 to 60 ° C. and becomes 5 to 50% of the volume of the first organic solvent. You can use the extracted to.

The organic solvent may be an alcohol having 1 to 10 carbon atoms.

The organic solvent may be any one or more selected from the group consisting of methanol, ethanol, propanol, butanol, pentanol, and hexanol.

Ethanol may be used as the organic solvent.

In the above, the retention agent may be used any one or more selected from the group of animal flavors, natural fragrance oils.

As one example of the animal flavor retention agent, any one or more selected from the group of musk and yongyeon fragrance may be used.

As an example of the above natural fragrance oil retention agent, any one or more selected from the group of coumarin, heliotrope, benzoin, sandalwood oil and vertivert oil can be used.

Rubber composition for a tire of the present invention is a carbon black, syndiotactic-1,2-polybutadiene as a reinforcing filler (hereinafter, abbreviated as filler) to improve the reinforcement of the rubber composition. Raw material rubber selected from the group consisting of SPB, silica, titanium dioxide, clay, layered silicate, tungsten, talc, and plate graphite. 30-95 weight part can be used with respect to 100 weight part.

If the filler is used in an amount of less than 30 parts by weight based on 100 parts by weight of the raw material rubber, reinforcement improvement is insignificant, and when used in excess of 95 parts by weight, the physical property of the rubber composition may be reduced due to the use of excess filler. Therefore, it is preferable to use the filler of 30 to 95 parts by weight of the steel cord adhesive rubber composition of the present invention based on 100 parts by weight of the raw material rubber.

Among the above fillers, syndiotactic-1,2-polybutadiene (SPB) may have a diameter of 0.01 to 0.1 µm and a specific surface area of 80 to 90 m ² / g.

Among the above fillers, syndiotactic-1,2-polybutadiene (SPB) may have a diameter of 1 to 10 µm and a specific surface area of 100 to 120 m ² / g.

Among the fillers described above, carbon black may have a particle diameter of 20 to 30 nm.

Among the above fillers, carbon black may be one having an iodine adsorption value of 100 to 140 mg / g.

Among the above fillers, carbon black may have a DBP adsorption value of 95 to 135 mg / 100 g.

Among the above fillers, carbon black may have a particle diameter of 20 to 30 nm, an iodine adsorption value of 100 to 140 mg / g, and a DBP adsorption value of 95 to 135 mg / 100 g.

Among the above fillers, silica may be one having a BET adsorption value of 160 to 180 (m ² / g).

Among the above fillers, silica may be one having a DBP adsorption value of 190 to 210 (ml / 100g).

Among the fillers, silica may be one having a micropore volume of 0.015 to 0.020 (cc / g).

Among the fillers, silica may be one having a BET adsorption value of 160 to 180 (m ² / g), a DBP adsorption value of 190 to 210 (ml / 100g), and a micropore volume of 0.015 to 0.020 (cc / g).

Among the above fillers, plate graphite may have a particle size of 0.1 to 20 µm.

Among the above fillers, plate graphite may be one having an interlayer spacing of 0.1 to 10 nm.

Among the above fillers, plate graphite may be one having an aspect ratio (l / d) of 5 or more, which represents the ratio of the plane width l to the thickness d.

In the above fillers, flat graphite having a flat ratio of 5 to 100 may be used.

Among the above fillers, plate graphite may have a particle size of 0.1 to 20 µm, an interlayer spacing of 0.1 to 10 nm, and a flat ratio of 5 to 100.

In the above fillers, plate graphite may be one obtained from the following steps (1) and (2).

(1) immersing graphite in a mixed solution containing sulfuric acid and nitric acid in a weight ratio of 1: 9 to 9: 1,

(2) washing the washed and dried graphite after dipping at 700 to 900 ° C. for 1 to 5 minutes.

The immersion in step (1) is immersed at 60 to 80 ° C. for 10 to 48 hours, preferably at 70 ° C. for 10 hours, and the -SO 4 ^{2 -} ion of sulfuric acid or -NO ₃ ^- ion of nitric acid is formed between the plate graphite layers. Make sure this is fully inserted.

In the rubber composition for tires of the present invention, the tire rubber composition is applied under various conditions such as various components and contents. In order to achieve the object of the present invention, it is understood that the rubber composition for tires under the conditions mentioned above is preferable. Could.

The rubber composition for tires of the present invention may contain various additives such as reinforcing fillers, activators, anti-aging agents, process oils, vulcanizing agents, and vulcanization accelerators, which are used in conventional rubber compositions for tires, in addition to the above-mentioned raw rubbers, drowsiness inhibitors and retention agents. If necessary, it can be used in a predetermined amount by appropriate selection. However, these are general components used in a rubber composition for a tire and are not essential components of the present invention.

On the other hand, the present invention includes a rubber having a drowsiness-preventing effect produced by the above-mentioned rubber composition for tires.

The present invention includes a tire produced by the above-mentioned rubber composition for tires and containing a rubber having a drowsiness preventing effect as a tread and / or a sidewall.

The tire represents any one selected from a tire for an automobile, a tire for a bus, a tire for a truck, an tire for an aircraft, and a tire for a motorcycle.

Hereinafter, the present invention will be described by the following comparative examples, examples and test examples. However, these are not limited to the scope of the present invention by these as an embodiment of the present invention.

Comparative Example

50 parts by weight of carbon black, 4 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 2 parts by weight of anti-aging agent (2,2,4-trimethyl-1,2-dihydroquinoline, RD), 1 weight of wax 2 parts by weight of the process oil were placed in a Banbury mixer and blended to obtain a rubber compound.

1.2 parts by weight of sulfur and 1.0 parts by weight of vulcanization accelerator (N-cyclohexyl-2-benzothiazol sulfonamide (CZ)) were added to the rubber mixture, followed by vulcanization at 160 ° C. for 25 minutes to prepare rubber specimens.

In the above carbon iodine adsorption was used was 120mg / g, DBP oil absorption 115ml / mg.

<Example>

50 parts by weight of carbon black, 4 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 2 parts by weight of anti-aging agent (RD), 1 part by weight of wax, 2 parts by weight of process oil, anti-drowsiness agent and retention agent 30 parts by weight of the mixed mixture at a weight ratio of 1: 1 was placed in a Banbury mixer and blended to obtain a rubber compound.

1.2 parts by weight of sulfur and 1.0 parts by weight of vulcanization accelerator (CZ) were added to the rubber compound as a vulcanizing agent, and vulcanized at 160 ° C. for 25 minutes to prepare a rubber specimen.

In the above carbon iodine adsorption was used was 120mg / g, DBP oil absorption 115ml / mg.

Drowsiness inhibitor in the mixture of the anti-drowsiness agent and the retention agent was used Camphor (Camphor).

In the mixture of the drowsiness inhibitor and the retention agent, musk was used as a retention agent.

Table 1. COMPARATIVE EXAMPLES AND EXAMPLES Rubber Components

Item Comparative example Example Natural rubber 100 100 Carbon black 50 50 Zinc oxide 4 4 Stearic acid 2 2 Antioxidant (RD) 2 2 Wax One One Process oil 2 2 Anti-Drowsiness and Retention Agent Mixtures - 30 brimstone 1.2 1.2 Vulcanization accelerator (CZ) 1.0 1.0

<Test Example 1>

The rubber specimens prepared in Examples and Comparative Examples were measured for tensile properties such as hardness, 300% modulus, tensile strength, and elongation according to ASTM-related regulations, and the results are shown in Table 2 below. In summary.

Table 2. Comparative Examples and Examples Properties of Rubber Specimens

Properties Comparative example Example Tensile Properties Hardness (ShoreA method) 65 66 300% modulus (kg / ㎠) 145 148 Tensile Strength (kg / ㎠) 290 293 Elongation (%) 520 535

<Test Example 2>

The tires manufactured in the above-described examples and comparative examples were used as tire treads, and tires each made of rubbers as treads were applied to the actual vehicle for 40 vehicle drivers (10 drivers in their 20s, 10 drivers in their 30s, and 10 drivers in their 40s). Persons, 50 drivers in their 50s) measured the effect of opening a window and preventing drowsiness while driving the vehicle, and the results are shown in Table 2 below.

Table 3. Whether the anti-drowsiness effect when applying the comparative examples and examples rubber

operator Comparative example Example 20 drivers × ○ 30's drivers × ○ 40 drivers × ○ 50 drivers × ○

* ○: Has anti-drowsiness effect.

* ×: No drowsiness prevention effect.

As in the results of the test example, the rubber of the embodiment including the mixture of the anti-drowsiness agent and the retention agent of the present invention has the same or higher physical properties as the rubber of the comparative example which does not include the mixture of the anti-drowsiness agent and the retention agent. It can be seen that there is a drowsiness prevention effect can contribute to the driver's safe operation by drowsiness.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and modified within the scope of the present invention without departing from the spirit and scope of the invention described in the claims below. It will be appreciated that it can be changed.

Claims (5)

In the rubber composition for tires, A mixture of any one or more drowsiness inhibitors selected from the group of Camphor and Thymol and one or more retention agents selected from the group of Yonghyang, Coumarin, Heliotrope, Benzoin, Sandalwood, and Buttermilk for 100 parts by weight of raw rubber 0.5 to 50 parts by weight; Syndiotactic-1,2-polybutadiene (SPB), titanium oxide, clay, layered silicate, tungsten, talc , Rubber composition for a tire having a drowsiness-preventing effect comprising 30 to 95 parts by weight of any one or more fillers selected from the group of plate graphite. The rubber composition for a tire having a drowsiness preventing effect according to claim 1, wherein the mixture of the anti-drowsiness agent and the retention agent is a mixture of the anti-drowsiness agent and the retention agent in a weight ratio of 5 to 9: 1 to 5. delete Rubber consisting of the rubber composition of claim 1. A tire comprising a rubber comprising the rubber composition of claim 1.