KR100282808B1 - Tire rubber composition of tire - Google Patents

Tire rubber composition of tire Download PDF

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Publication number
KR100282808B1
KR100282808B1 KR1019980022349A KR19980022349A KR100282808B1 KR 100282808 B1 KR100282808 B1 KR 100282808B1 KR 1019980022349 A KR1019980022349 A KR 1019980022349A KR 19980022349 A KR19980022349 A KR 19980022349A KR 100282808 B1 KR100282808 B1 KR 100282808B1
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South Korea
Prior art keywords
rubber
tire
inorganic powder
rubber composition
encapsulated
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KR1019980022349A
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Korean (ko)
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KR20000001875A (en
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권동은
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신형인
금호산업주식회사
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • B60C1/0025—Compositions of the sidewalls
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/10—Encapsulated ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

본 발명은 캡슐화된 무기분체를 적용하므로써, 백테 사이드월 고무의 백색도를 향상시킴과 동시에 피로저항특성 및 인장특성을 향상시킬 수 있는 백테 타이어 고무조성물에 관한 것이다.The present invention relates to a back frame tire rubber composition which can improve the whiteness of the back frame sidewall rubber while improving the fatigue resistance and tensile properties by applying the encapsulated inorganic powder.

Description

타이어의 백테고무조성물(A WHITE BAND RUBBER COMPOSITION OF TIRE)Back white rubber composition of tire (A WHITE BAND RUBBER COMPOSITION OF TIRE)

본 발명은 타이어의 백테고무조성물에 관한 것으로서, 보다 상세하게는 캡슐화된 무기분체를 적용하므로써 백테고무의 백색도 및 피로저항 특성과 인장특성의 향상을 통한 백테 타이어의 외관을 개선시키는 효과를 갖는 타이어의 백테고무조성물에 관한 것이다.The present invention relates to a bag-te rubber composition of a tire, and more particularly, to a tire having an effect of improving the appearance of a bag-te tire by improving the whiteness, fatigue resistance and tensile properties of the bag-te rubber by applying encapsulated inorganic powder. It relates to the composition of Bante rubber.

일반적으로 타이어의 백테고무조성물은 충진제로서 탄산칼슘, 클레이, 실리카 등이 적용되고 착색제로서 주로 이산화티타늄이 사용된다. 백테사이드월 고무적용시 중요한 물성은 백색도이며, 이는 비오염성 고무, 노화 방지제, 충진제, 착색제의 효과적인 선택에 따라 많은 차이를 보이고 있다. 또한, 백테 사이드월 고무는 햇빛에 가장 많이 노출되는 타이어 부위로서 오존에 의한 산화가 문제시되며, 이로 인한 피로 저항 특성 및 인장특성이 중요한 물성 영향 인자가 된다.In general, the tire tet rubber composition is applied to calcium carbonate, clay, silica, etc. as a filler, and mainly titanium dioxide is used as a colorant. The important physical properties of Baekthesidewall rubber are whiteness, which shows a lot of difference according to the effective selection of non-polluting rubber, anti-aging agent, filler, colorant. In addition, the back frame sidewall rubber is a part of the tire that is most exposed to sunlight, the oxidation by ozone is a problem, the fatigue resistance and tensile properties due to this is an important physical influence factor.

종래의 백테 사이드월 고무 배합물에 사용된 충진제인 탄산칼슘 및 클레이는 보강제 효과가 미미하여 사이드월 고무의 내피로특성 및 인장특성에서 다소 열세를 보이고 있다.Calcium carbonate and clay, which are fillers used in the conventional back frame sidewall rubber formulations, show a slight inferior fatigue and tensile properties of the sidewall rubber due to the insignificant reinforcing effect.

따라서, 본 발명의 목적은 백테 사이드월 고무의 백색도를 향상시킴과 동시에 충진제의 분산성 및 고무와의 보강성을 개선시킬 수 있는 캡슐화된 무기분체를 적용하므로써, 백테타이어의 외관품질을 향상시키는 고무조성물을 제공하는 것이다.Accordingly, an object of the present invention is to improve the appearance quality of the back tire by applying an encapsulated inorganic powder which can improve the whiteness of the back frame sidewall rubber and at the same time improve the dispersibility of the filler and reinforcement with the rubber. It is to provide a composition.

상기한 본 발명의 목적을 달성하기 위한 본 발명의 고무조성물은 천연고무와 합성고무로 이루어진 원료고무에 대하여 유화중합시킨 고분자로 캡슐화된 무기분체를 5∼100phr 포함하는 것을 특징으로 한다.The rubber composition of the present invention for achieving the above object of the present invention is characterized in that it comprises 5 to 100 phr of the inorganic powder encapsulated with the polymer polymerized by emulsion polymerization of the raw material rubber consisting of natural rubber and synthetic rubber.

유화중합은 분산상태에서 중합시키는 방법으로서, 분산매질로서는 보통물을 사용하며 생성된 고분자는 매질에 분산되어 있는 상태로 얻어진다.Emulsion polymerization is a method of polymerizing in a dispersed state, using a common substance as a dispersion medium and the resulting polymer is obtained in a state dispersed in the medium.

에멀젼이라는 것은 불용성인 두 액체중 하나는 연속상, 나머지 하나는 분산상을 형성하고 있는 것이다. 유화제와 수용액의 개시제를 사용하여 단량체를 수용핵중에 에멀젼 상태로 만들어 중합반응을 일으키며 비교적 낮은 온도에서 빠른 중합속도를 가지며 매우 높은 분자량을 갖는 중합체를 얻을 수 있고, 중합열은 물을 통하여 쉽게 제거할 수 있으며 용액중합이나 괴상중합에 비하여 높은 고체 함량과 낮은 점도를 동시에 얻을 수 있다.An emulsion is one in which two insoluble liquids form a continuous phase and the other a dispersed phase. Using the emulsifier and the initiator of the aqueous solution to make the monomer into the emulsion state in the nucleus to give a polymerization reaction, it is possible to obtain a polymer having a high polymerization rate and a very high molecular weight at a relatively low temperature, the heat of polymerization can be easily removed through water Compared with solution polymerization or bulk polymerization, high solids content and low viscosity can be obtained simultaneously.

무기화합물 분체와 유기 고분자로 이루어지는 분산계 복합재료의 제조시에는 여러 가지 커플링제들을 사용하여 무기분체의 표면처리를 하거나 유기 고분자에 극성을 도입하는 매트릭스 개질 등과 같은 소재간의 친화성을 높여주는 처리를 하여야 하는 경우가 많다. 무기 화합물 본체 존재하에서 단량체를 중합하여 무기화합물 본체가 유기 고분자에 의하여 균일하고 캡슐화된 복합체를 얻는다면 기존 공정의 단축 뿐만 아니라 전혀 새롭고 유용한 재료가 되며 매트릭스 내에서 무기 분체의 분산성을 향상시킬 수 있다.In the preparation of dispersion-based composite materials composed of inorganic compound powders and organic polymers, various coupling agents should be used to treat the surface of inorganic powders or to improve affinity between materials such as matrix modification to introduce polarity into organic polymers. Many times. If the inorganic compound body is polymerized in the presence of the inorganic compound body to obtain a uniform and encapsulated complex by the organic polymer, not only the shortening of the existing process but also a completely new and useful material can improve the dispersibility of the inorganic powder in the matrix. .

본 발명에 사용되는 유기고분자로 캡슐화된 무기분체는, 탄산칼슘, 클레이, 이산화티타늄, 실리카 등과 같은 무기화합물 본체의 입자표면에 수용성 고분자인 하이드록실 프로필 셀룰로오스 또는 하이드록시부티레이트를 흡착시킨 후, 이 무기분체의 표면에 스티렌고무, 부타디엔고무, 아크릴로니트릴고무 등과 같은 유기고분자를 유화중합시켜, 무기분체를 유기고분자로 캡슐화하므로써 제조된다. 여기서, 하이드록실프로필셀룰로오스 또는 하이드록시부티레이트는 무기분체와 성장고분자 사이에서 바인더 역할을 하여 분산성이 개선된다. 따라서, 이 캡슐화된 무기본체는 고무와 쉽게 혼합되며 충진제 및 보강제로서 매우 뛰어난 물성을 나타내고, 또한 우수한 분산효과에 의하여 백색도도 개선된다.The inorganic powder encapsulated with the organic polymer used in the present invention, after adsorbing hydroxyl propyl cellulose or hydroxybutyrate, which is a water-soluble polymer, onto the particle surface of an inorganic compound body such as calcium carbonate, clay, titanium dioxide, silica, etc. It is prepared by emulsifying and polymerizing organic polymers such as styrene rubber, butadiene rubber, acrylonitrile rubber, etc. on the surface of the powder, and encapsulating the inorganic powder with organic polymer. Here, hydroxylpropyl cellulose or hydroxybutyrate serves as a binder between the inorganic powder and the growth polymer to improve dispersibility. Therefore, this encapsulated inorganic body is easily mixed with rubber and shows very excellent physical properties as a filler and a reinforcing agent, and also improves whiteness by excellent dispersing effect.

본 발명에 사용되는 캡슐화된 무기분체의 제조과정을 간단히 도시하면 다음과 같다.The manufacturing process of the encapsulated inorganic powder used in the present invention is briefly shown as follows.

이하, 실시예 및 비교예를 통하여 본 발명을 상세하게 설명한다.Hereinafter, the present invention will be described in detail through Examples and Comparative Examples.

[실시예 및 비교예][Examples and Comparative Examples]

하기 표 1의 조성에 따라 백테고무시편을 제조한 후, 이들에 대한 백색도(백색도 측정기 사용) 및 물성을 측정하였다.After preparing the baekte rubber specimens according to the composition of Table 1, the whiteness (using a whiteness meter) and the physical properties for them were measured.

[표 1]TABLE 1

이상에서 알 수 있듯이, 캡슐화된 탄산칼슘이 적용된 본 발명의 백테고무조성물은 백색도가 개선됨과 동시에 피로저항 특성 및 인장특성이 개선되어 백테타이어의 외관품질을 향상시키는 효과를 나타내게 된다.As can be seen from the above, the bagte rubber composition of the present invention to which the encapsulated calcium carbonate is applied exhibits an effect of improving the appearance quality of the bag tire by improving the whiteness and the fatigue resistance and the tensile properties.

Claims (2)

천연고무와 합성고무로 이루어진 원료고무에 대하여, 무기분체의 입자표면에 수용성 고분자인 하이드록실 프로필 셀룰로오스 또는 하이드록시 부티레이트를 흡착시킨 후, 이 무기분체의 표면에 유기고분자인 스티렌고무, 부타디엔고무 또는 아크릴로니트릴고무를 유화중합시켜 제조된, 유기 고분자로 캡슐화된 무기분체를 5∼100PHR 포함하는 것을 특징으로 하는 타이어의 백테고무조성물.A raw material rubber composed of natural rubber and synthetic rubber is adsorbed on the surface of the inorganic powder, and the hydroxy cellulose or hydroxy butyrate, which is a water-soluble polymer, is adsorbed on the surface of the inorganic powder, and then the organic polymer styrene rubber, butadiene rubber or acryl A tire-containing rubber composition of a tire comprising 5 to 100 PHR of an inorganic powder encapsulated with an organic polymer prepared by emulsion polymerization of ronitrile rubber. 제1항에 있어서, 무기분체는 탄산칼슘, 클레이, 실리카 또는 이산화티타늄인 것을 특징으로 하는 타이어의 백테고무조성물.The tire rubber composition of claim 1, wherein the inorganic powder is calcium carbonate, clay, silica, or titanium dioxide.
KR1019980022349A 1998-06-15 1998-06-15 Tire rubber composition of tire KR100282808B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100771685B1 (en) * 2006-06-20 2007-10-31 금호타이어 주식회사 Tire sidewall rubber composition
FR2984901B1 (en) * 2011-12-22 2014-01-03 Michelin Soc Tech RUBBER COMPOSITION COMPRISING A CELLULOSE DERIVATIVE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03252432A (en) * 1990-03-01 1991-11-11 Bridgestone Corp Rubber composition

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03252432A (en) * 1990-03-01 1991-11-11 Bridgestone Corp Rubber composition

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