KR20090055779A - Tire balancing using silanizated balancing beads and manufacturing method - Google Patents

Abstract

A balancing bead for a tire and a manufacturing method thereof are provided to maximize frictional electricity performance of an inner liner portion through a special surface process of nanoscale. A balancing bead for a tire is made of a mixed reactant of a compound in chemical formulas 1, 2. In the chemical formula, R1 and R2 are saturated or unsaturated alkylene of a linear shape or a branched shape, saturated or unsaturated alkylene of the linear shape or branched shape which is substituted for oxygen or a sulfur atom, saturated or unsaturated alkoxy alkylene of the linear shape or branched shape which is substituted for oxygen or the sulfur atom, and aliphatic family or alicyclic arylene. R3 ~ R8 are alkyl of the linear shape, aliphatic family or alicyclic aryl, and saturated or unsaturated alkyl and aryl of the linear shape or branched shape.

Description

Tire balancing using silanizated balancing beads and manufacturing method

The present invention relates to a balancing bead for a tire for balancing the tire inside the tire.

The balance of tires has a great influence on driving stability and ride comfort, and at the same time, when the balance is not balanced, fatigue failure occurs due to repeated deformation such as stretching movements during the running of tires. It has a big impact.

In general, the balance of a tire can be classified into a static balance that causes up and down vibration and a dynamic balance that causes up and down or left and right vibrations from the perspective of the steering wheel. This is a problem inevitably caused by variations in structure and manufacturing process.

This non-uniformity of the balance is mounted on the wheel, and meets the non-uniform balance of the wheel portion, resulting in non-uniformity as a composite between the tire and the wheel. Therefore, in general, the balance is evaluated while the tire is mounted on the wheel, and the above-mentioned static balance and dynamic balance also mean balance as a tire-wheel composite.

The non-uniform balance is usually expressed in an imbalanced state. In order to balance such an unbalanced tire, a 'fixed weight system', that is, a balance weight made of lead is generally mounted on the wheel part. I'm using the method. This is a very typical method and is the most commonly used.

However, due to the environmental problems of lead, developed countries such as North America are making efforts to improve such methods, and consumers are also seeking new methods due to the recent increase in size and appearance of wheels.

Furthermore, in the case of truck and bus tires, such fixed weight system is also difficult to apply due to the expensive balance measurement ratio and the difficulty of removing and removing the tire for measurement.

Thus, for most trucks and buses, the rear wheel balance problem is almost neglected and the resulting reduction in ride comfort is abandoned.

The problem, however, is that these unbalanced runs usually increase fuel economy by more than 3% and cause tire wear.

In particular, in the case of the stationary weight system, it is difficult to continuously control the balance easily distorted by the external environment since it is difficult to readjust after the initial installation.

As a solution to the above problem, there is a method of catching an unbalanced tire by injecting a substance that self-adjusts the balancing of the tire into the tire.

To explain this principle in more detail, it is possible to maintain the balancing of tires by injecting a substance with balancing control function into the non-uniform tire and automatically distributing the balancing control function in the non-uniform part of the tire while driving. Therefore, the purpose of the present invention is to increase the fuel efficiency saving effect of the vehicle by keeping the tires in uniform contact with the ground at all times, and also to prevent abnormal or uneven wear, thereby increasing the life of the tire and increasing driving stability.

In other words, such a tire balancing technology inserts a powder or bead-like material that can freely flow into the tire, so that the tire is properly distributed in the uneven portion of the tire by centrifugal force when the tire rotates at a high speed. It is a technology that enables the balancing function.

However, in the case of this technology, the materials injected by gravity fall down the inside of the tire when the vehicle is stopped, and the materials gathered on the floor are packed together when the vehicle is driven at low speed or when the vehicle is restarted after stopping. This causes an initial imbalance in the tire, which increases the fuel efficiency of the vehicle and causes abnormal wear of the tire or chip & cutting until the injected materials stabilize.

In order to solve the above problem, US Patent No. 6,128,952 discloses a method of injecting a glass bead as a balancing material and injecting the inside of a tire. The glass beads exhibit a balancing effect during high-speed running of the tire, and generate a charging effect of electric charges in which the glass beads have a positive charge due to the charge transfer of the glass beads during friction between the rubber tire and the glass beads due to the high-speed driving, and such frictional charging The static electricity caused by the effect allows the injected glass beads to adhere to the surface of the rubber inside the tire for a long time even after driving stops.

However, in the above technique, the surface of the glass beads has a hydroxyl group, so that the adsorption of moisture by hydrogen bonding occurs easily, and the moisture adsorbed on the surface of the glass beads inhibits the generation of static electricity due to the frictional charging effect, and thus the charging effect is rapidly increased. Therefore, when the vehicle is stopped for a certain period of time (within about 5 minutes), even a small amount of electric charge supplied from the ground weakens the static electricity between the glass beads and the rubber inside the tire, and thus the static power becomes weaker than gravity and easily falls to the floor.

In other words, it is necessary to repeat again for the balancing effect when starting after stopping. This repetitive material movement is rather disadvantageous when driving in the city because it has a problem of halving the fuel economy.

Moreover, the water affinity of such glass beads has a problem of causing cohesion between glass beads even with a small amount of water with a decrease in the frictional charging effect. Therefore, the agglomeration is caused by moisture contained in the air injected into the tire, and in particular, in winter, the agglomerated glass beads caused by this water cause a problem of impacting the tire like a stone.

Therefore, the balancing technology using such glass beads also has a problem caused by moisture.

The prior art as described above can be expected to balance the tire by simply injecting only a powder or bead-type material, not only does not prevent the air flowing out rapidly when the tire punctures, the material injected during the outflow of air By stimulating the cracks of the tires by escaping, rather it increases the cracks of the tires.

In addition, the powder or bead-type material injected during driving of the vehicle is generally hard, causing friction with the inner liner, causing wear, thereby promoting the outflow of air inside the tire.

In order to solve the above problem, WO 95/000347 discloses a silica gel, which is a desiccant, together with a bead in a tire to absorb silica gel, and EP 1,196,299 discloses beads and Clay plastic gel was used as a balancing material, US Patent Publication No. 2006/0001309 discloses a technique for coating ceramic beads with PTFE (polytetrafuoroethylene) to be used as a balancing material. However, the above techniques still have a low effect of improving the triboelectric charging effect and the agglomeration phenomenon by water.

In order to solve the problems of the conventional balancing materials as described above, the present invention provides a surface nano-coating on the beads used as the balancing materials to improve the frictional charging effect, as well as to remove the phenomenon of cohesion between the beads by moisture. The present invention provides a balancing bead for tires having a smooth and strong surface coating so as to suppress wear caused by friction between the inner liner portion of the bead and the tire by surface nato coating.

In order to achieve the above object, the present invention provides a balancing bead for a tire, characterized in that the surface nano-coating on the bead (bead) a mixed reactant of the compound of Formula 1 and Formula 2.

[Formula 1]

[Formula 2]

In Formula 1 and Formula 2, R ₁ , R ₂ are the same or independent linear or branched saturated or unsaturated (C ₁ ~ C ₁₂ ) alkylene, linear or branched substituted with oxygen or sulfur atom at the end Saturated or unsaturated (C ₁ -C ₁₂ ) alkylene and linear or branched saturated or unsaturated (C ₁ -C ₁₂ ) alkoxy (C ₁ -C ₁₂ ) alkylene, aliphatic or Alicyclic (C ₅ -C ₁₂ ) arylene, R ₃ -R ₈ are the same or independent linear or branched (C ₁ -C ₁₂ ) alkyl, aliphatic or cycloaliphatic (C ₅ -C ₁₂ ) aryl R ₉ to R ₁₂ are the same or independent linear or branched, saturated or unsaturated (C ₁ -C ₃₀ ) alkyl and (C ₆ -C ₃₀ ) aryl.

The compound of Formula 1 and Formula 2 is a linear or branched (C ₁ ~ C ₁₂ ) alkylene R ₁ , R ₂ are the same or independent of each other, R ₃ ~ R ₈ is the same or independent linear or branched It is more preferable if it is a topographic (C ₁ -C ₁₂ ) alkyl, and R ₉ -R ₁₂ are the same or independent linear or branched (C ₁ -C ₁₂ ) alkyl.

Surface nano-coating the mixed reactants of Chemical Formulas 1 and 2 on the balancing beads maximizes the triboelectric performance between the surface-treated beads and the inner liner of the tire and at the same time fully hydrophobizes the hydroxyl groups that can adsorb moisture. By doing so, optimum balancing is possible.

That is, the present invention can be applied not only to the existing glass beads but also to other bead-type materials having a hydroxyl group. By replacing the group with the alkoxy group contained in the compound, the performance of the frictional charging effect due to moisture can be prevented and at the same time, the agglomeration phenomenon between the bead particles can be eliminated.

In addition, the final surface state forms a siloxane crosslinked body, while preventing the wear phenomenon of the inner liner caused by friction, while making a smooth and strong surface coating.

Therefore, ultimately, the tire was optimized in the absence of any chemical reaction with the tire, and the beading and strengthening of triboelectric properties allowed each bead to exhibit long-term efficiency at its balancing position.

In addition, according to the prior art, the balancing beads for tires according to the surface nano-coating technology of the present invention can be given the same properties as the glass beads with respect to other types of beads, as compared with simply glass beads.

The balancing bead for tires according to the present invention is properly dispersed in the non-uniform place of the tires due to the high speed centrifugal force when the vehicle is running inside the tire, suppresses the reduction of triboelectric charging effect due to moisture, and eliminates the cohesion between particles. Therefore, even when the tire is stopped for a certain period of time, the balancing beads are perfectly attached to the inside of the tire to catch the balancing of the tires and solve the problem that the bead particles had to repeatedly move to find a uniform position when restarting after stopping. In the long distance operation or in the city driving, the balancing effect is maximized.

Therefore, it maximizes the fuel economy saving effect of the vehicle, prevents abnormal wear and wear and tear, and extends the life of the tire and improves the driving stability.

Balancing beads for tires according to the present invention

a) The compound of Formula 1 and Formula 2 is a mixture of Formula 1: Formula 2 is 3: 7 to 4: 6, then the constant temperature and relative humidity of 20 to 30% at 150 ~ 160 ℃, 0.3 Preparing a mixed reactant by mixing for 1 hour; And

b) the surface of the mixed reactant to bead (stirring) to 0.01 ~ 0.05 wt% with respect to the bead in an oven capable of evacuation of 65 ~ 75 ℃ so that the thickness of the coating film to 100 ~ 200nm Surface nano-coating;

It is prepared to include.

In the step a) of the preparation method, the mixing reaction is a reaction to form a partial crosslink while using the high reactivity of the amine functional group of the compound of Formula 1 and utilizing the compound of Formula 2 as an intermediate. Using this reaction, a silane mixture is prepared, which then forms a smooth siloxane network upon surface coating. At this time, the reaction between the silane mixtures was confirmed as shown in Figure 2 through the differential scanning calorimeter (Differential Scanning Calorimeter).

In the mixing reaction, the compound of Chemical Formula 1 and Chemical Formula 2 may be mixed in a ratio of 3: 1 to 2: 6. The ratio is weight ratio. When the ratio of Chemical Formula 2 is lower than 3: 7, sufficient hydroporation effect does not appear, and the surface coating thickness is thin, which is somewhat inferior to the development of electrostatic properties, and the ratio of Chemical Formula 2 is higher than 4: 6. In the high case, the surface properties are more likely to be broken, which causes the coating to be destroyed by friction.

In the mixing reaction, the reaction temperature is used 150 ~ 160 ℃, the reaction temperature is less than 150 ℃ less than the reactivity, the acceleration of the partial cross-linking (160) or more occurs at 160 ℃ or more is not good because the physical properties are too hard.

The relative humidity is preferably made 20 to 30% humidity, so that the reaction proceeds smoothly, more preferably 24 to 26%.

The mixing reaction time is preferably 0.3 to 1 hour, but less than 0.3 hours, the reactivity of partial crosslinking is low, and the reactivity of partial crosslinking is increased at 1 hour or more, so that the physical properties become hard. 0.3 to 1 hour is good, and 25 minutes to 35 minutes. The reaction time of is better when considering the physical properties.

The mixed reactant by the mixing reaction may have a viscosity of 0.5 ~ 5.0cps. If the viscosity is 0.5cps or less, the work time is long to form the desired coating film thickness in the surface treatment process of the beads, and the mixture flows during drying, so that a coating film of uniform thickness cannot be obtained. Sex is worse.

In the step b) of the manufacturing method, when the mixed reactant is used at 0.01 to 0.05 wt% with respect to the beads and 0.01 wt% or less with respect to the beads, the thickness of the coating film becomes thin, thereby reducing the expression of the electrostatic properties. If it is used at 0.05 wt% or more, the drying time becomes longer due to the excessive input and the thickness of the coating increases as with the mixing ratio.

If the bead in step b) of the manufacturing method can be freely moved inside the tire by centrifugal force due to the high-speed rotation of the vehicle while driving, the shape is not particularly limited to round, elliptical, uneven, and polyhedron (n = 12 to 1,000). , N is the number of faces of the polyhedron), and is preferably used for fluidity and uses at least one material selected from the group consisting of hydroxy groups, glass, ceramic, aluminum, steel, and wood.

It is preferable to use beads having an average particle diameter of 0.1 to 5.0 mm, and if the size of the beads is less than 0.1 mm, the self-aggregation phenomenon is severe before coating and at the same time, the weight is low, which is good for the unfavorable workability in the coating process. If it is 5.0mm or more, the weight of the bead is much more affected by gravity, so the adhesion inside the tire due to the frictional charging effect is inferior.

Balancing beads for tires obtained by the above manufacturing method is preferably 100 ~ 200nm thickness of the coating film, if the thickness of the coating film is 100nm or less, the density of Si element is low, the electrostatic properties due to the frictional charging is low, and easily lose the electrostatic force The adhesion with the tire is lowered, and if the thickness of the coating film is 200 nm or more, the coating film becomes thick, and thus the impact resistance is worse, which is not good.

The effect on the tire of the balancing bead for tires according to the present invention will be described in more detail with reference to the drawings.

1 is a diagram in which a balancing bead for a tire having a surface treatment by nano coating is in contact with an inner liner portion of a tire and is coupled by frictional charging therebetween. At this time, 1 is the original bead, 2 is the surface-treated part, the thickness is maintained about 100 ~ 200nm. 3 shows the inner liner rubber of the tire which contacts these.

Figure 2 shows the surface state of the balancing bead for the tire produced by Example 1 in more detail.

4 (a) shows a cross-sectional view of a general tire, and (b) shows the appearance of uneven wear 4 due to a general imbalance. In the figure, 3 is the tread portion of the tire and 1 is the innerliner portion. That is, in general, a general tire as shown in FIG. 4 (a) has a change in the center of gravity of the vehicle, or abnormal or single wear as shown in (b) according to a driving habit of a driver or a road condition. Due to such abnormal or single wear, the service life of the tire is reduced and fuel economy is increased due to irregular contact between the tire and the ground. In addition, the risk of an accident is also increased due to deterioration of handling and breaking performance.

As shown in FIG. 5 (a), when the tire balancing bead according to the present invention is injected into the tire and travels, the balancing bead injected into the tire is moved inside the tire due to the high speed centrifugal force when the vehicle runs. It distributes to the nonuniform part suitably, and it is comprised so that the position distributed in the tire may be maintained by the charging effect applied to the balancing bead at the time of stopping of a vehicle. In addition, in the case of injecting the balancing bead for a tire according to the present invention in Fig. 4 (b), which has been broken by the conventional wear, as in Fig. 5 (b), since the worn portion is relatively lighter, It shows the principle of lamination of beads. That is, it shows the characteristic of automatically adjusting the tire balance.

The balancing bead for tires according to the present invention is a balancing material that completely removes the agglomeration phenomenon due to moisture through a special surface treatment of nanoscale and maximizes triboelectric performance with the inner liner of the tire, and at the same time moisture can be adsorbed. By fully hydroforming the hydroxyl groups present, excellent balancing was possible.

In addition, it can be applied to other bead-type materials having hydroxyl groups as well as existing glass beads, and prevents the deterioration of the frictional charging effect due to moisture and at the same time eliminates cohesion between beads.

In addition, since the final surface state forms a siloxane crosslinked body, a smooth and strong surface coating is made, thereby suppressing abrasion due to friction, preventing air from rapidly flowing out when the tire is punctured, and injecting when air is leaked. The rapid release of the material stimulates the cracking of the tire and rather suppresses the increase in cracking of the tire.

As a result of measuring the high-speed balance by inserting the balancing bead for the tire according to the present invention into the tire, a perfect control effect was obtained, and the actual vehicle evaluation showed 8% fuel economy reduction and 30% tire performance improvement.

Hereinafter, the present invention will be described in more detail with reference to the following Examples and Comparative Examples, which are not intended to limit the present invention.

Example 1

300 g of bis- (gamma-triethoxysilylpropyl) amine and 700 g of tetraethyl orthosilicate were added to a 30L constant temperature / humidity bath (25% RH) and mixed with stirring at 155 ° C. for 30 minutes. Thereafter, the mixture was cooled at room temperature for 2 hours to prepare a mixed reactant A having a weight average molecular weight of 1,700 g / mol and a viscosity of 1.8 cps.

3 g of the mixed reactant A prepared and 10 kg of spherical glass beads having an average particle diameter of 0.6 mm were stirred for 12 hours at 20 rpm in an oven capable of evacuation at 70 ° C. to obtain a balancing bead 1 for tires having a thickness of 160 nm.

Example 2

300 g of bis- (gamma-triethoxysilylpropyl) amine and 700 g of tetraethyl orthosilicate were added to a 30L constant temperature / humidity bath (25% RH) and mixed with stirring at 155 ° C. for 30 minutes. Thereafter, the mixture was cooled at room temperature for 2 hours to prepare a mixed reactant B having a weight average molecular weight of 1,700 g / mol and a viscosity of 1.8 cps.

The prepared reactant B 3g and 10 kg of spherical ceramic beads having an average particle diameter of 0.6 mm were stirred for 12 hours at 20 rpm in an oven capable of evacuation at 70 ° C. to obtain balancing beads 2 for tires having a thickness of 130 nm.

Example 3

400 g of bis- (gamma-triethoxysilylpropyl) amine and 600 g of tetraethyl orthosilicate were placed in a 30L constant temperature / humidity bath (25% RH) and mixed with stirring at 155 ° C. for 30 minutes. Thereafter, the mixture was cooled at 25 ° C. for 2 hours to prepare a mixed reactant C having a weight average molecular weight of 1,400 g / mol and a viscosity of 1.6 cps.

3 g of the mixed reactant C prepared (please describe) and 10 kg of spherical glass beads having an average particle diameter of 0.6 mm were stirred for 12 hours at 20 rpm in an oven capable of evacuating at 70 ° C. for balancing beads 3 for a tire having a thickness of 140 nm. Got.

Comparative Example 1

100 g of bis- (gamma-triethoxysilylpropyl) amine and 900 g of tetraethyl orthosilicate were added to 30 L of a constant temperature / humidity bath (25% RH) and mixed at 155 ° C. for 30 minutes with stirring. Thereafter, the mixture was cooled at room temperature for 2 hours to prepare a mixed reactant D having a weight average molecular weight of 2,700 g / mol and a viscosity of 2.8 cps.

5 g of the mixed reactant D prepared and 10 kg of spherical glass beads having an average particle diameter of 0.6 mm were stirred at 20 rpm for 20 hours in an oven capable of evacuation at 70 ° C. to obtain a balancing bead 1 for a tire having a thickness of 180 nm.

Comparative Example 2

500 g of bis- (gamma-triethoxysilylpropyl) amine and 500 g of tetraethyl orthosilicate were added to 30 L of a constant temperature / humidity bath (25% RH), followed by mixing and stirring at 155 ° C. for 30 minutes. Thereafter, the mixture was cooled at room temperature for 2 hours to prepare a mixed reactant E having a weight average molecular weight of 1,300 g / mol and a viscosity of 0.8 cps.

3 g of the mixed reactant E prepared and 10 kg of spherical glass beads having an average particle diameter of 0.6 mm were stirred for 12 hours at 20 rpm in an oven capable of evacuation at 70 ° C. to obtain a balancing bead 2 for tires having a thickness of 100 nm.

Experimental Example 1

Moisture adsorption degree, non-uniform weight and frictional charge by using the tire containing the balancing beads for the tires of Example 1 and Example 2, the tire without the balancing bead, and the tire with the glass or ceramic bead untreated Time was measured and shown in Table 1 below.

Glass beads or ceramic beads that were not surface treated were spherical beads having an average particle diameter of 0.6 mm.

In the experimental method used in Table 1 below, the water adsorption degree is a value measured by a separate evaluation apparatus for the water adsorption amount per 100g of each balancing bead particle, and the moisture is not deposited on the sieve of the mesh smaller than the bead particle size. After processing to exit, 100 g of each bead particle was distributed to fill the surface of the sieve, and 300 mL of water was poured therein to measure the amount of flow. That is, the smaller the value, the more favorable the result;

Balancing effect was utilized to check the high speed balance of truck bus tires, where the tires were rated at 130km / h against the 12R22.5 standard;

The primary imbalanced weight is a fixed weight (lead) required amount required by the wheel balance meter, and is a sum of the requirements of the left and right sides of the wheel part;

The second imbalanced weight is the result of evaluation again after being left for 2 hours after the first evaluation;

The frictional charging time means the time when the particles are stuck to the surface by the charging effect between the inner liner of the tire and the balancing bead, and this time should be long to solve the problem that needs to be re-sorted to balance the vehicle when stopping and restarting the vehicle. Can be reduced. The evaluation was performed by making a 30 cm transparent tire model and measuring the time for each particle to fall to the ground after driving for 10 minutes at a speed of 30 km / h.

[Table 1] Balancing Effect Experiment by Balancing Bead for Tire

Looking at the Table 1, Example 1 and Example 2 was confirmed that the amount of water adsorption basically reduced than the beads that are not surface treatment, ultimately showed a significantly advantageous result in the balancing effect of the tire.

In particular, in the case of Example 1, the results of the high speed balance showed perfect balancing control effect. In addition, it can be seen that the balancing value was changed in the second high-speed balance evaluation in the case of tires without beads or surface treatments, but the value was not changed in the examples. This indicates that the control state is maintained continuously.

6 shows a state in which the high-speed balance is measured in a state in which the tire containing Example 1 is mounted on an actual vehicle, and when Example 1 is applied, the imbalance amount is 'zero'.

In addition, FIG. 7 shows the actual picture of the state in which the balancing bead for the tire exists in the interior by detaching the tire according to the first embodiment after driving, and the inner liner of the tire is used to control the optimum balance of the tire. It was able to confirm that it was distributed for a long time by touching the part.

Experimental Example 2

The tire balancing bead of Example 1, Example 3, Comparative Example 1 and Comparative Example 2 was conducted in the same manner as in Experimental Example 1 and the results are shown in Table 2 below.

TABLE 2 Balancing effect experiment according to the proportion of the mixture.

According to the experimental example, it can be seen that the optimization of the performance is achieved according to the mixing ratio of the mixture. In Comparative Example 1 and Comparative Example 2, which are out of the range of the ratio, the water adsorption degree is significantly decreased compared to the glass beads which are not surface-treated, respectively, but it tends to increase compared to the Examples. The tea showed a change in imbalanced weight.

Experimental Example 3

In the case of using the balancing bead for the tire of Example 1 and the actual fuel economy and the tire mileage improvement results with the tire that is balanced by the usual soldering is shown in Table 3 below.

The vehicle used for the experiment was used a 15 ton cargo truck and tires 12R22.5, and the average value was obtained after measuring the results of driving 170,000 km through four trucks, respectively.

In the following table, the wear index is 170,000 km after driving, the value of the tread pattern (skid depth) of the tread, the higher the value, the more favorable results.

[Table 3] Actual Vehicle Evaluation Experiment

As a result of the experiment, in the vehicle using the balancing bead for tires of the present invention, fuel economy of 8% and tire life improvement of 30% were obtained.

When the balancing beads for tires according to the present invention are used for tires, fuel economy of 8% and tire lifespan of 30% can be obtained, which can bring about economic savings of about 60 trillion won per year in Korea.

1 is a diagram in which a balancing bead for a tire according to the present invention contacts the innerliner portion of a tire.

2 is a view showing the surface of the balancing bead for tires according to the first embodiment.

3 is an evaluation result of the differential scanning calorimeter confirming the reaction.

4 is a cross-sectional view showing occurrence of abnormal wear of a general tire.

5 is a cross-sectional view of the inside and outside of a general tire.

6 is a photograph showing a balance of zero by measuring a high speed balance in a state where a tire is mounted on an actual vehicle.

Figure 7 is a picture of the inside of the tire showing the distribution of the balancing bead for the tire according to the invention after running.

1: Inner liner inside the tire

2: Balancing Bead for Tire

  (a) bead prior to surface treatment, (b) coated surface by surface treatment, (c) balancing beads for tires having a relatively large distribution for control at the unweared position

3: tread outside the tire

4: Tread surface of tire with abnormal wear

5: High Speed Balance Evaluation Picture

Claims (17)

Balancing beads for tires, characterized in that the surface nano-coating a mixed reactant mixed with the compound of Formula 1 and Formula 2 on the beads (bead). [Formula 1]

[Formula 2]

[Wherein R ₁ , R ₂ are the same or independent linear or branched saturated or unsaturated (C ₁ ~ C ₁₂ ) alkylene, linear or branched saturated or unsaturated (C ₁ ~ C ₁₂₎ alkylene and the saturation of the linear or branched, substituted with an oxygen or a sulfur atom at both terminals or unsaturated (C ₁ ~ C ₁₂₎ alkoxy (C ₁ ~ C ₁₂₎ alkylene, aliphatic or cycloaliphatic (C ₅ ~ C ₁₂ ) arylene, R ₃ ~ R ₈ is the same or independent linear or branched (C ₁ ~ C ₁₂ ) alkyl, aliphatic or cycloaliphatic (C ₅ ~ C ₁₂ ) aryl, R ₉ ~ R ₁₂ is the same or independent linear or branched saturated or unsaturated (C ₁ -C ₃₀ ) alkyl and (C ₆ -C ₃₀ ) aryl] The method of claim 1, The compound of Formula 1 is a linear or branched (C ₁ ~ C ₁₂ ) alkylene R ₁ , R ₂ are the same or independent of each other, R ₃ ~ R ₈ is the same or independent linear or branched ( C ₁ ~ C ₁₂ ) alkyl, wherein the compound of formula 2 is a balancing bead for tires, characterized in that R ₉ ~ R ₁₂ is the same or independent linear or branched (C ₁ ~ C ₁₂ ) alkyl. The method of claim 2, The compound of Formula 1 is R ₁ , R ₂ is a propylene group, R ₃ ~ R ₈ is an ethyl group, the compound of Formula 2 is a balancing bead for tires, characterized in that R ₉ ~ R ₁₂ is an ethyl group. The method of claim 1, The compound of Formula 1 and Formula 2 is a balancing bead for the tire, characterized in that the mixing reaction of each ratio of 3: 7 to 4: 6. The method of claim 4, wherein The mixing reaction is a balancing bead for tires, characterized in that the mixing reaction for 150 ~ 160 ℃, 0.3 ~ 1 hour in a constant temperature and a relative humidity of 20-30%. The method of claim 1, The surface nano-coating is a balancing bead for the tire, characterized in that the coating of the reaction mixture of the formula (1) and (2) by the stirring method (stirring) in an oven capable of exhausting 65 ~ 75 ℃. The method of claim 6, The surface nano-coating is a balancing bead for the tire, characterized in that the mixed reactants of the formula (1) and (2) is coated with 0.01 ~ 0.05 wt% based on the beads. The method of claim 7, wherein Balancing beads for tires, characterized in that the thickness of the coating film coated on the beads by the surface nano-coating is 100 ~ 200nm. The method of claim 1, The bead (bead) is a tire, characterized in that any one selected from circular, oval, uneven, and polyhedron (n = 12 ~ 1,000) that can move freely inside the tire by the centrifugal force of the high speed rotation of the vehicle running Balancing Beads. [n is the number of faces of the polyhedron] The method of claim 9, The bead (bead) is one or more materials selected from the group consisting of glass, ceramic, aluminum, steel, and wood, balancing bead for the tire, characterized in that it comprises a hydroxyl group. The method of claim 1, The balancing bead for the tire, characterized in that it has an average particle diameter of 0.1 ~ 5.0mm. a) preparing a mixed reactant by mixing a compound of Chemical Formula 1 and Chemical Formula 2; And b) surface nanocoating the surface of the mixed reactant with beads by stirring; Method for producing a balancing bead for a tire, characterized in that comprising a. The method of claim 12, In the step a), the compound of Formula 1 and Formula 2 is a method of producing a balancing bead for the tire, characterized in that the mixing reaction of each ratio of 3: 7 ~ 4: 6. The method of claim 13, Mixing in the step a) is a method for producing a balancing bead for the tire, characterized in that the reaction mixture for 150 ~ 160 ℃, 0.3 ~ 1 hour in a constant temperature and a relative humidity of 20-30%. The method of claim 12, The surface nano-coating in step b) is a method for producing a balancing bead for the tire, characterized in that the coating is coated with 0.01 ~ 0.05 wt% relative to the bead in an oven capable of exhausting the reaction mixture of 65 ~ 75 ℃. The method of claim 12, In step b), the bead is any one selected from round, oval, uneven, and polyhedrons (n = 12 to 1000) that can move freely inside the tire by centrifugal force due to high speed rotation of the vehicle, and glass and ceramics. , Aluminum, steel, and wood, any one or more materials selected from the group consisting of, a method for producing a balancing bead for tires, characterized in that it comprises a hydroxyl group. [n is the number of faces of the polyhedron] The method of claim 12, The tire balancing bead is a manufacturing method of the balancing bead for the tire, characterized in that it has an average particle diameter of 0.1 ~ 5.0mm.

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