KR101142551B1 - Tread rubber composition for retreading bustruck tire and tire retreaded by using the same - Google Patents

Tread rubber composition for retreading bustruck tire and tire retreaded by using the same Download PDF

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KR101142551B1
KR101142551B1 KR1020090130221A KR20090130221A KR101142551B1 KR 101142551 B1 KR101142551 B1 KR 101142551B1 KR 1020090130221 A KR1020090130221 A KR 1020090130221A KR 20090130221 A KR20090130221 A KR 20090130221A KR 101142551 B1 KR101142551 B1 KR 101142551B1
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weight
parts
rubber
tire
rubber composition
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KR1020090130221A
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Korean (ko)
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KR20110073064A (en
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가영현
강창환
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한국타이어 주식회사
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Abstract

The present invention relates to a tread rubber composition for bus truck tire regeneration and a tire regenerated using the same, comprising 100 parts by weight of raw rubber including 57 to 63 parts by weight of natural rubber and 37 to 43 parts by weight of butadiene rubber, and a specific surface area of nitrogen adsorption 118 to 122 m 2 / g, DBP oil absorption of 124 to 128cc / 100g, 53 to 57 parts by weight of carbon black having a TINT value of 119 to 122, and reinforcement including terpene and C9 petroleum resin It provides a tread rubber composition for bus truck tire regeneration comprising 3 to 5 parts by weight of resin.
The tread rubber composition for bus truck tire regeneration is satisfactory at the same time wear resistance and durability, and is advantageous in cut chipping resistance, and also excellent in heat resistance.
Recycling, Tread, Bus Truck, Reinforcement Resin, Natural Rubber, Butadiene Rubber, Carbon Black, Terpene, Gosis, C9 Petroleum Resin

Description

Tread rubber composition for bus truck tire regeneration and tires regenerated using the same {TREAD RUBBER COMPOSITION FOR RETREADING BUSTRUCK TIRE AND TIRE RETREADED BY USING THE SAME}

The present invention relates to a tread rubber composition for bus truck tire regeneration and a tire regenerated using the same, wherein the tread rubber composition for bus truck tire regeneration having excellent abrasion resistance, cut-chipping resistance and heat resistance is provided. It relates to a tire regenerated using.

In addition to increasing demands for the economics of tires in recent years, particularly for large tires used in trucks and buses, the performance of so-called recycled tires in which treads are reattached to worn treads is used. The demand is also growing. Such a tread rubber composition for a regenerated tire is required to have excellent wear resistance and heat resistance at the same time, but at the same time it is difficult to satisfy.

In the case of regenerated tires, the thickness of the tread tends to be thicker than the tread of new tires, which is why it is more difficult to generate heat. In addition, in the case of driving a rough road as well as a road, many truck bus tires are required to have excellent cutting resistance as well as wear resistance and heat resistance.

Japanese Patent No. 6-192480 has a high nitrogen adsorption specific surface area with respect to 100 parts by weight of the raw material rubber consisting of 20 to 50 parts by weight of natural rubber, 50 to 70 parts by weight of butadiene rubber, and 10 to 30 parts by weight of styrene butadiene rubber, Disclosed is a rubber composition having improved wear resistance and heat resistance using carbon black having a wide range of dibutyl phthalate (DBP) oil absorption. However, when a high content of synthetic rubber such as butadiene and styrene butadiene rubber is improved, the wear resistance is improved, but the heat generation resistance is disadvantageous. However, heat generation resistance is disadvantageous and durability tends to fall.

Japanese Patent Publication No. 2000-219778, which is another patent, has a CTAB adsorption ratio with respect to 100 parts by weight of a raw material rubber component composed of 40 parts by weight or more of natural rubber, 10 to 45 parts by weight of butadiene rubber, and 5 to 35 parts by weight of styrene butadiene rubber. High Tint SAF grade carbon black with 125m 2 / g surface area, 100cc / 100g C-DBP oil absorption, 120 Tint value, CTAB adsorption ratio surface area 60 to 85m 2 / g and C-DBP oil absorption 80 Low-tint HAF grade carbon black having a ton of 115 cc / 100 g and a tint value of less than 110 is used at a ratio of 0.4 to 1.2 so that the characteristics of wear resistance, heat generation and cut chipping resistance are balanced. However, in the case of the present invention, there is a disadvantage in that heat generation resistance is disadvantageous and wear resistance is lowered.

It is an object of the present invention to provide a tread rubber composition for bus truck tire regeneration excellent in wear resistance, cut-chipping resistance and heat resistance.

Another object of the present invention is to provide a tire regenerated using the tread rubber composition for bus truck tire regeneration.

In order to achieve the above object, the tread rubber composition for bus truck tire regeneration according to an embodiment of the present invention is 100 parts by weight of raw rubber, including 57 to 63 parts by weight of natural rubber and 37 to 43 parts by weight of butadiene rubber, nitrogen adsorption ratio 53 to 57 parts by weight of carbon black having a surface area of 118 to 122 m 2 / g, DBP oil absorption of 124 to 128 cc / 100 g, TINT value of 119 to 122, and terpene and C9 petroleum resin 3 to 5 parts by weight of the reinforcing resin.

The butadiene rubber may be a high cis butadiene rubber having a cis-1,4 content of 96% by weight or more, a glass transition temperature (Tg) of -104 to -107 ° C, and a Mooney viscosity of 43 to 47 at 100 ° C.

The reinforcing resin may be one containing the terpene and the C9 petroleum resin in a weight ratio of 10 to 30:30 to 70.

Another object of the present invention is to provide a tire regenerated using the tread rubber composition for bus truck tire regeneration.

Hereinafter, the present invention will be described in more detail.

The tread rubber composition for bus truck tire regeneration includes raw rubber, carbon black and reinforcement resin.

The raw material rubber may include 57 to 63 parts by weight of natural rubber and 37 to 43 parts by weight of butadiene rubber, preferably 58 to 62 parts by weight of natural rubber and 38 to 42 parts by weight of butadiene rubber, and more preferably, natural rubber 60 It may include parts by weight and 40 parts by weight of butadiene rubber.

The natural rubber may be used in an amount of 57 to 63 parts by weight, and the butadiene rubber may be used in an amount of 37 to 43 parts by weight in terms of excellent cut chipping resistance and heat resistance. When the content of the butadiene rubber exceeds 43 parts by weight cut resistance and heat resistance may be lowered, and when the content of the butadiene rubber is less than 37 parts by weight may wear resistance.

When the raw material rubber includes styrene butadiene rubber, since it may have an adverse effect in terms of heat resistance, it is preferable that the raw material rubber does not include the styrene butadiene rubber.

The natural rubber may be a general natural rubber or modified natural rubber. The general natural rubber may be used as long as it is known as a natural rubber, the country of origin and the like are not limited.

The butadiene rubber is a cis-1,4 butadiene content of at least 96% by weight, a glass transition temperature (Tg) of -104 to -107 ° C, and a high cis butadiene rubber having a Mooney viscosity of 43 to 47 at 100 ° C. Can be. In the case of using the high cis butadiene rubber, there is an advantageous effect in terms of wear resistance and heat build up under dynamic stress.

The carbon black is contained in 53 to 57 parts by weight based on 100 parts by weight of the raw material rubber. When the content of the carbon black is less than 53 parts by weight, the wear resistance may be lowered, and when the content of the carbon black is more than 57 parts by weight, the heat generating resistance may be reduced.

The carbon black has a nitrogen adsorption specific surface area of 118 to 122 m 2 / g, a DBP (n-dibutyl phthalate) oil absorption of 124 to 128cc / 100g, the TINT (colloidal) characteristics of 119 to 122 Carbon black having can be used.

When the carbon adsorption specific surface area of the carbon black exceeds 122m 2 / g, it may be advantageous in terms of wear resistance and cut chipping resistance, but heat generation may increase, so that durability may be lowered, and when it is less than 118m 2 / g, wear resistance and cut chipping resistance Can be disadvantageous. When the carbon black's DBP (n-dibutyl phthalate) absorption exceeds 128cc / 100g, it is advantageous in terms of heat resistance, but the cut chipping resistance may be lowered, and if it is less than 124cc / 100g, heat resistance may be lowered.

The reinforcing resin including the terpene and C9 petroleum resin may be used in an amount of 3 to 5 parts by weight based on 100 parts by weight of the raw material rubber. When the content of the reinforcing resin is less than 3 parts by weight, the effect of improving chip chipping performance by the use of the reinforcing resin may be insignificant, and when the content of the reinforcing resin is more than 5 parts by weight, heat resistance may be lowered.

The reinforcing resin may be one containing the terpene and the C9 petroleum resin in a weight ratio of 10 to 30:30 to 70. When using a reinforcing resin containing the terpene and C9 petroleum resin in a weight ratio of 10 to 30:30 to 70, there is an advantageous effect in that the reinforcement is excellent for natural rubber and the thermal aging stability is also excellent. The reinforcing resin may be one having a softening point of 95 to 100 ° C. The reinforcing resin having the softening point of 95 to 100 ° C. maintains the modulus of the tire tread when the running temperature of the tire is 95 ° C. or less, and thus has an advantageous effect in terms of cut chipping resistance.

The tire tread rubber composition may optionally further include various additives such as additional vulcanizing agents, vulcanization accelerators, vulcanization accelerators, anti-aging agents and softeners. The various additives can be used as long as it is commonly used in the field of the present invention, the content thereof is not particularly limited, depending on the compounding ratio used in the conventional tire tread rubber composition.

As the vulcanizing agent, metal oxides such as sulfur vulcanizing agents, organic peroxides, resin vulcanizing agents, and magnesium oxide may be used, and sulfur vulcanizing agents may be preferably used.

The vulcanizing agent is preferably included in an amount of 0.5 to 2.5 parts by weight based on 100 parts by weight of the raw material rubber, in that the raw material rubber is less sensitive to heat and chemically stable.

The vulcanization accelerator refers to an accelerator that promotes the rate of vulcanization or promotes delay in the initial vulcanization stage.

The vulcanization accelerators include sulfenamide, thiazole, thiuram, thiourea, guanidine, dithiocarbamic acid, aldehyde-amine, aldehyde-ammonia, imidazoline, xanthate and their Any one selected from the group consisting of a combination can be used.

As the vulcanization accelerator, preferably sulfenamide-based N-cyclohexyl-2-benzothiazylsulfenamide may be used, and 100 parts by weight of the raw material rubber may be used in order to maximize productivity and rubber properties by promoting vulcanization rate. It may be included in an amount of 0.5 to 3.0 parts by weight.

The vulcanization accelerator is a compounding agent used in combination with the vulcanization accelerator to complete its promoting effect. Any one selected from the group consisting of inorganic vulcanization accelerators, organic vulcanization accelerators and combinations thereof can be used. .

In particular, the zinc oxide and the stearic acid may be used together as the vulcanization accelerator, in which case the zinc oxide is dissolved in the stearic acid to form an effective complex with the vulcanization accelerator, thereby releasing advantageous sulfur during the vulcanization reaction. It facilitates the crosslinking reaction of the rubber.

When using the zinc oxide and the stearic acid together may be used in 1 to 5 parts by weight and 0.5 to 3 parts by weight with respect to 100 parts by weight of the raw material rubber for the role as a suitable vulcanization accelerator.

The softener is added to the rubber composition to impart plasticity to the rubber to facilitate processing, or to lower the hardness of the vulcanized rubber, and refers to oils and other materials used in rubber compounding or rubber production. The softener may be any one selected from the group consisting of petroleum oil, vegetable oil and combinations thereof, but the present invention is not limited thereto.

The petroleum oil may be any one selected from the group consisting of paraffinic oil, naphthenic oil, aromatic oil, and combinations thereof.

However, with the recent increase in environmental awareness, when the content of the polycyclic aromatic hydrocarbons (Polycyclic Aromatic Hydrocarbons (hereinafter referred to as "PAHs") contained in the aromatic oil is more than 3% by weight, it is known that cancer is likely to cause, Treated distillate aromatic extract (TDAE) oil, mild extraction solvate (MES) oil, residual aromatic extract (RAE) oil or heavy naphthenic oil can be preferably used.

The softener is preferably used in an amount of 0 to 150 parts by weight based on 100 parts by weight of the raw material rubber, in terms of improving the processability of the raw material rubber.

The anti-aging agent is an additive used to stop the chain reaction in which the tire is automatically oxidized by oxygen. As the anti-aging agent, any one selected from the group consisting of amine-based, phenol-based, quinoline-based, imidazole-based, carbamic acid metal salts, waxes, and combinations thereof may be appropriately selected.

The anti-aging agent may be N- (1,3-dimethylbutyl) -N-phenyl-p-phenylenediamine (N- (1,3-Dimethybutyl) -N-phenyl-p-phenylenediamine, 6PPD), N-phenyl -n-isopropyl-p-phenylenediamine (3PPD), poly (2,2,4-trimethyl- 1,2-dihydroquinoline (Poly (2,2) , 4-trimethyl-1,2-dihydroquinoline, RD) and a combination thereof can be preferably used.

The anti-aging agent has a high solubility in rubber in addition to the anti-aging action, is low in volatility, inert to rubber, and does not inhibit vulcanization. It may be included in parts by weight.

A tire according to another embodiment of the present invention is manufactured using the tread rubber composition for bus truck tire regeneration. The method of manufacturing a tire using the tread rubber composition for bus truck tire regeneration may be applied to any method conventionally used for regeneration of a tire.

Specifically, a method of manufacturing a recycled tire using the tread rubber composition for regenerating the bus truck tire may use a method of hot cure and cold cure, but the present invention is not limited thereto. The worn tire (case) by applying a new tread rubber or by vulcanization can be used in a manner in close contact, but is not limited to this may be applied to any method used for the regeneration of the tire.

The tire may be used for a bus truck tire, but is not limited thereto, and may be a tire for a passenger car, a racing tire, an airplane tire, a farm tire, or an off-the-road tire. In particular, it may be for a bus truck or a heavy load.

The tread rubber composition for bus truck tire regeneration of the present invention can satisfy wear resistance and durability at the same time, and is excellent in all of abrasion resistance, cut-chipping resistance, and heat resistance.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[ Manufacturing example : Preparation of Rubber Composition]

To prepare a tire tread rubber composition according to the following Examples and Comparative Examples using the composition shown in Table 1. The preparation of the tire tread rubber composition was in accordance with a conventional method for producing tire tread rubber. In Table 1, Comparative Example 1 is a kind of carbon black, Comparative Example 2 is a case where the use ratio of the polymer (raw rubber) is changed and no reinforcing resin is used.

Table 1

Comparative Example 1 Comparative Example 2 Example Natural rubber 60 50 60 Butadiene Rubber (1) 40 50 40 Carbon Black (2) 53 - - Carbon Black (3) - 53 53 Zinc oxide 3.5 3.5 3.5 Stearic acid 2 2 2 Reinforcement Resin (4) - - 3 Antioxidant 2 2 2 brimstone 1.8 1.8 1.8 Accelerators (5) 1.5 1.5 1.5

(Unit: parts by weight)

(1) Butadiene rubber: Butadiene rubber having a cis-1,4 butadiene content of 96% by weight or more, a glass transition temperature (Tg) of -104 to -107 ° C, and a Mooney viscosity of 43 to 47 at 100 ° C.

(2) Carbon black: Carbon black with nitrogen adsorption specific surface area of 140 to 170m 2 / g, DBP oil absorption of 130 to 135cc / 100g, Tint value of 125 to 135

(3) Carbon Black: Carbon black having a nitrogen adsorption specific surface area of 118 to 122 m 2 / g, a DBP oil absorption of 124 to 128 cc / 100 g, and a TINT value of 119 to 122

(4) Reinforcement resin: Terpene: C9 petroleum resin = 30: 70, reinforcement resin having a softening point of 95 to 100 ° C

(5) Accelerator: N-Cyclohexyl-2-benzothiazolesulfenamide as a sulfenamide-based accelerator

The rubber composition having the above compounding ratio was manufactured by Hot Curing method according to 12R22.5 and 11R22.5 standards, and was mounted on actual trucks and buses to evaluate abrasion resistance. It evaluated using. The measurement results are shown in Table 2 by exponential indexing based on Comparative Example 1. The larger the value, the better the performance.

[Table 2]

Performance Comparative Example 1 Comparative Example 2 Example Wear resistance 100 98 105 Cut chipping resistance 100 95 110 Heat resistance 100 103 105

Referring to Table 2, compared with Comparative Examples 1 and 2, it can be seen that the wear resistance, the cut chipping resistance, and the heat generation resistance having properties opposite to each other are simultaneously improved.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (4)

100 parts by weight of raw rubber, including 57 to 63 parts by weight of natural rubber and 37 to 43 parts by weight of butadiene rubber,
53 to 57 parts by weight of carbon black having a nitrogen adsorption specific surface area of 118 to 122 m 2 / g, a DBP oil absorption of 124 to 128 cc / 100 g, and a TINT value of 119 to 122, and
3 to 5 parts by weight of reinforcing resin including terpene and C9 petroleum resin,
The reinforcing resin is a tread rubber composition for bus truck tire regeneration comprising the terpene and the C9 petroleum resin in a weight ratio of 20 to 30: 60 to 70.
The method of claim 1,
The butadiene rubber is a cis-1,4 butadiene content of more than 96% by weight, a glass transition temperature (Tg) of -104 to -107 ° C, and a high cis butadiene rubber having a Mooney viscosity of 43 to 47 at 100 ° C. Tread rubber composition for in-bust truck tire regeneration.
delete
A tire regenerated using the tread rubber composition for bus truck tire regeneration according to any one of claims 1 to 2.
KR1020090130221A 2009-12-23 2009-12-23 Tread rubber composition for retreading bustruck tire and tire retreaded by using the same KR101142551B1 (en)

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KR1020090130221A KR101142551B1 (en) 2009-12-23 2009-12-23 Tread rubber composition for retreading bustruck tire and tire retreaded by using the same

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KR1020090130221A KR101142551B1 (en) 2009-12-23 2009-12-23 Tread rubber composition for retreading bustruck tire and tire retreaded by using the same
CN 201010563356 CN102108139B (en) 2009-12-23 2010-11-29 Tread rubber composition for regeneration of large transport vehicle tire and tire using the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102067433B1 (en) 2019-10-11 2020-02-11 김민호 Reparing method for retread tires and retread tires using the same method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2016111331A1 (en) * 2015-01-08 2017-10-19 株式会社ブリヂストン Rubber composition, tread member, pneumatic tire and method for producing rubber composition

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0174797B1 (en) * 1996-04-04 1999-04-01 홍건희 Tread Rubber Composition for Large Tires
KR0174796B1 (en) * 1996-03-04 1999-04-01 홍건희 Tread rubber composition for large tires
KR100254970B1 (en) 1997-09-12 2000-05-01 홍건희 A tread rubbrr composition for tire
KR100870417B1 (en) * 2007-09-21 2008-11-25 한국타이어 주식회사 Rubber composition for retreaded tire

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927144A (en) * 1970-02-20 1975-12-16 Bridgestone Tire Co Ltd Elastomer composition
AT546299T (en) * 2007-03-29 2012-03-15 Michelin Soc Tech Tire rope with resin
BRPI0721443A2 (en) * 2007-04-23 2013-01-22 Michelin Soc Tech damping gum, method of attaching a tread to a tire, tire, repair filler, method of repairing a rubber article, article, and, rubber based adhesive

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0174796B1 (en) * 1996-03-04 1999-04-01 홍건희 Tread rubber composition for large tires
KR0174797B1 (en) * 1996-04-04 1999-04-01 홍건희 Tread Rubber Composition for Large Tires
KR100254970B1 (en) 1997-09-12 2000-05-01 홍건희 A tread rubbrr composition for tire
KR100870417B1 (en) * 2007-09-21 2008-11-25 한국타이어 주식회사 Rubber composition for retreaded tire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102067433B1 (en) 2019-10-11 2020-02-11 김민호 Reparing method for retread tires and retread tires using the same method

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KR20110073064A (en) 2011-06-29
CN102108139A (en) 2011-06-29
CN102108139B (en) 2013-05-15

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