KR20130104167A - The compsition of under body coating - Google Patents

The compsition of under body coating Download PDF

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KR20130104167A
KR20130104167A KR1020120025429A KR20120025429A KR20130104167A KR 20130104167 A KR20130104167 A KR 20130104167A KR 1020120025429 A KR1020120025429 A KR 1020120025429A KR 20120025429 A KR20120025429 A KR 20120025429A KR 20130104167 A KR20130104167 A KR 20130104167A
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composition
undercoating
weight
undercoat
vehicle
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KR101349088B1 (en
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김명순
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김명순
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D195/00—Coating compositions based on bituminous materials, e.g. asphalt, tar, pitch
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/06—Copolymers with styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/80—Processes for incorporating ingredients

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

PURPOSE: An undercoating composition for a vehicle has a soundproofing function, an anti-rust function, and an anti-corrosion function and does not generate smells and dust due to scattering, thereby providing fresh pleasant work environment. CONSTITUTION: An undercoating composition for a vehicle comprises a first composition which includes 50-60 wt% of liquid aqueous straight asphalt, 35-40 wt% of liquid styrene butadiene, and 5-10 wt% of water; and a second composition which contains 85 wt% of a rubberized asphalt and 15 wt% of carbon powder. The mixing ratio of the first composition and the second composition is 5:1. The undercoating composition is obtained by mixing the first composition and the second composition with a mixing ratio of 5:1 and uniformly stirring the mixture at 600 rpm within 2 minutes.

Description

자동차용 언더코팅 조성물{THE COMPSITION OF UNDER BODY COATING}Undercoat composition for automobiles {THE COMPSITION OF UNDER BODY COATING}

본 발명은 자동차용 언더코팅 조성물에 관한 것으로서 더욱 상세하게는 수용성 아스팔트계의 물질을 이용하여 자동차의 하부 코팅을 통하여 방음 방청은 물론 이물질의 흡착을 배제할 수 있도록 한 조성물에 관한 것이다.The present invention relates to an undercoating composition for automobiles, and more particularly, to a composition capable of excluding soundproofing rust prevention as well as adsorption of foreign matter through the undercoat of a vehicle using a water-soluble asphalt-based material.

자동차가 완성되어 출고될 때에는 자동차의 차체 하부 중요 부위에는 언더코팅을 수행하여 부식을 방지하면서 방음 및 방청을 통하여 자동차의 품질을 높이도록 하고 있으나, 차체 하부 전체에 대하여 언더코팅이 수행되어 출고되는 경우는 없다.When the car is completed and shipped out, undercoat is applied to the lower part of the car body to prevent corrosion and to improve the quality of the car through soundproofing and rust prevention. There is no.

이러한 이유에 의하여 자동차를 구매한 이용자가 장기간 사용하는 과정에서 발생할 수 있는 부식현상을 배제하여 자동차의 수명을 연장하면서 소음이나 충격의 흡수를 통하여 쾌적한 승차감을 얻을 수 있도록 하기 위하여 언더 코팅을 수행하는 경우가 많다.For this reason, undercoating is carried out in order to obtain a comfortable ride by absorbing noise or shock while extending the life of the car by excluding corrosion that may occur during long-term use by the user who purchased the car. There are many.

즉 포장된 도로를 주행하는 과정에서도 아스팔트 성분과 기타 이물질이 지속적으로 차체 하부에 부착되어 침적되어 오염시키는 것은 물론, 동절기와 같은 경우에는 강설시 살포되는 염화칼슘이 차체의 하부에 흡착된 상태를 지속하게 되므로 차체의 부식을 가속화시키는 원인이 된다.In other words, during the process of driving on the pavement, asphalt components and other foreign substances are continuously attached to the lower part of the body to be deposited and contaminated, and in the case of winter, calcium chloride sprayed during snowfall is continuously adsorbed to the lower part of the body. Therefore, it causes the corrosion of the vehicle body.

또한, 오프로드를 주행하는 과정에서 발생하는 미세한 먼지(모래알갱이)와 같은 이물질에 의하여 오염이 되고, 잔동이나 모래 등이 바퀴에 의하여 비산되어 차체의 하부와 부딪치면서 많은 소음과 충격을 유발하여 승차감을 저하시키는 원인으로 작용하고 있다.In addition, it is contaminated by foreign matters such as fine dust (sand grains) generated during the driving of off-road, and after the wheels are scattered by wheels, they hit a lower part of the vehicle body and cause a lot of noise and shocks to ride. It is acting as a cause to lower.

이와 같은 차체의 하부에 흡착 또는 부착시키는 언더코팅을 위한 언더코팅 조성물은 종래에는 유성계 조성물로 이루어져 있고, 주성분은 에멀전형과 우레탄 또는 에폭시수지를 주성분으로 하고 있다.Undercoat compositions for undercoating to be adsorbed or attached to the lower part of such a vehicle body are conventionally composed of an oil-based composition, and the main component is an emulsion type and a urethane or epoxy resin as a main component.

상기와 같은 종래 기술이 적용되는 유성계 언더코팅제는 도포 후 건조성이 늦어 상당 기간 동안 건조가 되지않고, 완전하게 건조되지 않은 상태에서 자동차를 운행하는 경우가 많은 데 이 과정에서 지면으로부터 비산되는 미세먼지가 흡착되어 함께 건조되므로 코팅의 효과가 반감된다.The oil-based undercoating agent to which the prior art is applied does not dry for a considerable period of time due to late drying after application, and in many cases, the automobile is operated in a state that is not completely dried. Since the dust is adsorbed and dried together, the effect of the coating is halved.

차체 하부에 수행한 언더코팅제를 열풍 등을 이용하여 완전하게 건조시킨 경우에는 언더코팅제가 너무 딱딱하게 굳어 차량운행시 타이어에서 비산되는 경질의 이물질과 부딪치면서 언더코팅된 부분이 깨어지고 탈락되는 현상이 발생하고, 탈락된 그 틈사이로 각종 이물질과 부식물질에 의하여 부식을 가속화시키는 원인이 되고 있다.If the undercoating agent on the underbody is completely dried using hot air, the undercoating agent hardens so hard that the undercoating part breaks up and falls off while colliding with the hard foreign matter scattered from the tires during vehicle operation. It is caused by various foreign matters and corrosive substances between the gaps generated and dropped, causing the corrosion to be accelerated.

특히, 과도한 건조로 인하여 언도코팅제가 경화될 경우에는 비산되는 이물질과 부딪칠 때 많은 소음이 발생하게 되므로 원래의 목적을 달성하는 것이 어렵게 되는 것은 물론, 소음이 자동차의 실내로까지 유입되어 승차감을 저해하는 또 다른 원인이 되고 있다.In particular, when the undoped coating agent is hardened due to excessive drying, a lot of noise is generated when it hits the scattering foreign matter, which makes it difficult to achieve the original purpose, and noise also flows into the interior of the car to impair riding comfort. Is another cause.

그리고, 유성계 언더코팅제의 경우에는 성분 중에 톨루엔(Toluene)이 있는 데, 이러한 톨루엔은 툴루엔 노출은 호흡이나 섭취를 통해 이루어지는데, 호흡 노출시 노출량의 약 53％가 흡수되고 흡입 후 40 ∼ 60％가 체내 잔류하는 것으로 보고되었으며, 위장기관에서는 100％흡수가 일어나나 경구흡수는 호흡보다 느린 것으로 보고되고 있다.In the case of the oil-based undercoating agent, toluene is present in the components. Toluene is exposed to toluene through respiration or ingestion. About 53% of the exposure during respiration is absorbed and 40 to 60 after inhalation. % Is reported to remain in the body, and 100% absorption occurs in the gastrointestinal tract, but oral absorption is reported to be slower than breathing.

톨루엔이 체내에 과량 흡입될 경우 복통, 구토와 같은 위장관계의 기능장애를 초래할 뿐 아니라 두통, 어지럼증 및 환각증세와 같은 신경 장애를 일으키며, 또한, 100 ∼ 200ppm 톨루엔을 8시간 흡입하면 피로, 구토, 감각저하, 운동불능, 무기력, 졸림 등의 증상을 보이며, 600ppm 정도의 농도가 되면 단시간 노출만으로도 심한 흥분, 강한 피로감, 구토, 두통 등을 일으키는 것으로 보고되고 있다.Inhalation of toluene in the body not only leads to gastrointestinal dysfunctions such as abdominal pain and vomiting, but also neurological disorders such as headache, dizziness and hallucinations. In addition, inhalation of 100 to 200 ppm toluene for 8 hours causes fatigue, vomiting, Symptoms such as numbness, inability to exercise, lethargy, drowsiness, and the concentration of 600ppm has been reported to cause severe excitement, strong fatigue, vomiting, headache, etc. even with a short exposure.

고농도 톨루엔의 급성 또는 만성적인 노출에 의한 영향으로는 진정, 흥분, 혼미한 상태, 떨림, 이명(귀울림), 복시, 환각, 말더듬, 보행실조, 경련과 혼수상태 등 중추신경계의 영향을 주게 되며 발암물질의 원인으로 보고되고 있다.Acute or chronic exposure to high levels of toluene may affect the central nervous system such as calm, excitement, confusion, tremors, tinnitus, diplopia, hallucinations, stuttering, ataxia, convulsions and lethargy. It is reported as the cause of the substance.

이와 같이 유성계 언더코팅제를 이용하여 작업시 인체에 유해함을 주는 것은 물론, 스프레이건을 이용하여 미세한 분사상태를 유지하는 것이 어렵기 때문에 언더코팅 작업 자체가 어렵게 되는 등 여러 문제점들이 발생하고 있는 실정이다.As such, the use of an oil-based undercoating agent is not only harmful to the human body during work, but also difficult to maintain a fine spray state using a spray gun, which makes it difficult to undercoat itself. to be.

이에 본 발명에서는 상기와 같은 문제점들을 해결하기 위하여 발명한 것으로서, 액상의 수성계 스트레이트아스팔트(Straight Asphalt) 50 ∼ 60 중량％와 액상의 합성고무(Styreme Butadiene) 35 ∼ 40 중량％ 및 물 5 ∼ 10 중량％를 함유하는 1조성물과;Therefore, the present invention was invented to solve the above problems, 50 to 60% by weight of the liquid aqueous straight asphalt (Straight Asphalt), 35 to 40% by weight of the synthetic rubber (Styreme Butadiene) and water 5 to 10 1 composition containing weight%;

고무아스팔트(Rubberized Ashpalt) 85 중량％에 카본분말 15 중량％를 함유하는 2조성물과;Two compositions containing 15% by weight of carbon powder in 85% by weight of rubberized ashpalt;

상기 1조성물과 2조성물을 5 : 1의 비율로 고르게 혼합하여 얻음으로써 방음, 방청, 부식방지, 소음저감에 크게 기여하면서 냄새와 비산으로 인한 분진발생이 없어 쾌적한 작업환경을 유지하면서 작업자의 건강을 보호할 수 있는 등의 목적 달성이 가능하다.By obtaining evenly mixing the 1 and 2 composition at a ratio of 5: 1, it contributes greatly to sound insulation, rust prevention, corrosion prevention and noise reduction, and does not generate dust due to odor and scattering, maintaining a comfortable working environment while maintaining a pleasant working environment. It is possible to achieve such objectives as protection.

본 발명은 수성계 원료를 이용하여 언더코팅 조성물을 제조하여 제공함으로서 언더코팅 작업과정에서 환경오염과 인체에 유해함을 해소하여 쾌적한 작업환경을 유지할 수 있고, 차체 하부의 코팅력을 높여 주행과정에서 발생하는 이물질에 의하여 손상되거나 탈락 되는 현상이 없으면서, 이물질의 흡착을 배제하면서도 이물질과 부딪칠 때 발생하는 소음과 충격을 줄여주어 쾌적한 승차감을 유지할 수 있으면서 수분의 침투를 방지하여 부식의 우려를 배제함으로써 자동차의 수명은 물론 언더코팅 대상체의 수명과 내구성을 높일 수 있는 등 다양한 효과를 가지는 발명이다.The present invention by manufacturing and providing an undercoat composition using an aqueous raw material to solve the environmental pollution and harmful to the human body during the undercoating process to maintain a comfortable working environment, to increase the coating power of the lower body in the process of driving By eliminating the adsorption of foreign substances, while reducing the noise and impact generated when they collide with the foreign substances, it is possible to maintain a comfortable ride while preventing the ingress of moisture, eliminating the risk of corrosion. As well as the life of the vehicle is an invention having a variety of effects, such as to increase the life and durability of the undercoat object.

도 1은 본 발명의 기술에 의하여 제조된 조성물을 이용하여 자동차의 하부를 언더코팅한 상태의 사진.
도 2는 본 발명의 기술에 의하여 제조된 조성물을 이용하여 자동차의 휠하우스커버를 언더코팅한 상태의 사진.
도 3은 본 발명의 기술에 의하여 제조된 조성물로 언더코팅을 수행한 상태에서 수행한 공회전 상태의 소음측정 비교 사진.
도 4는 본 발명의 기술에 의하여 제조된 조성물로 언더코팅을 수행한 상태에서 수행한 주행상태의 소음측정 비교 사진.
도 5는 본 발명의 기술에 의하여 제조된 언더코팅 조성물의 일반시험결과를 나타낸 도표.Figure 1 is a photograph of the undercoated state of the lower part of the vehicle using the composition prepared by the technique of the present invention.
Figure 2 is a photo of the undercoat of the wheel house cover of the vehicle using the composition prepared by the technique of the present invention.
Figure 3 is a comparison of noise measurements of the idle state performed in the state of undercoating with the composition prepared by the technique of the present invention.
Figure 4 is a comparison of the noise measurement of the running state performed in the undercoating with the composition prepared by the technique of the present invention.
Figure 5 is a table showing the general test results of the undercoat composition prepared by the technique of the present invention.

이하 첨부되는 도면과 관련하여 상기 목적을 달성하기 위한 자동차용 언더코팅 조성물 제조방법 및 조성물을 얻는 과정을 살펴보면 다음과 같다.Looking at the process of obtaining an undercoat composition for automobiles and a composition for achieving the above object with reference to the accompanying drawings as follows.

도 1은 본 발명의 기술에 의하여 제조된 조성물을 이용하여 자동차의 하부를 언더코팅한 상태의 사진, 도 2는 본 발명의 기술에 의하여 제조된 조성물을 이용하여 자동차의 휠하우스커버를 언더코팅한 상태의 사진, 도 3은 본 발명의 기술에 의하여 제조된 조성물로 언더코팅을 수행한 상태에서 수행한 공회전 상태의 소음측정 비교 사진, 도 4는 본 발명의 기술에 의하여 제조된 조성물로 언더코팅을 수행한 상태에서 수행한 주행상태의 소음측정 비교 사진, 도 5는 본 발명의 기술에 의하여 제조된 언더코팅 조성물의 일반시험결과를 나타낸 도표로서 함께 설명한다.1 is a photo of the undercoating of the lower portion of the vehicle using the composition prepared by the technique of the present invention, Figure 2 is a coating of the wheel house cover of the vehicle using the composition prepared by the technique of the present invention Photo of the state, Figure 3 is a comparison of the noise measurement of the idle state performed in the undercoating with the composition prepared by the technology of the present invention, Figure 4 is an undercoat with the composition prepared by the technology of the present invention Comparison of the noise measurement of the running state performed in the performed state, Figure 5 will be described together with a chart showing the general test results of the undercoat composition prepared by the technique of the present invention.

본 발명의 기술이 적용되는 자동차용 언더코팅 조성물은, 액상의 수성계 스트레이트아스팔트(Straight Asphalt) 50 ∼ 60 중량％과 액상의 합성고무(Styreme Butadiene) 35 ∼ 40 중량％ 및 물 5 ∼ 10 중량％를 함유하는 1조성물과;The undercoating composition for automobiles to which the technique of the present invention is applied includes 50 to 60 wt% of liquid aqueous straight asphalt, 35 to 40 wt% of liquid synthetic butadiene, and 5 to 10 wt% of water. 1 composition containing a;

고무아스팔트(Rubberized Ashpalt) 85 중량％에 카본분말 15 중량％를 함유하는 2조성물과;Two compositions containing 15% by weight of carbon powder in 85% by weight of rubberized ashpalt;

상기 1조성물 5와 2조성물 1의 비율로 고르게 혼합하여 스프레이건으로 분사할 수 있는 겔과 같은 형태로 완성한다.The composition is uniformly mixed in a ratio of the first composition 5 and the second composition 1 to complete a gel-like form that can be sprayed with a spray gun.

상기 언더코팅 조성물을 구성하는 1조성물의 원료인 스트레이트아스팔트(Straight Asphalt)와 합성고무(Styreme Butadiene) 및 2조성물의 원료인 고무아스팔트와 카본분말의 제시한 혼합비율의 ± 5중량％의 범위를 벗어나지 않도록 하는 것이 바람직하다.It is within the range of ± 5% by weight of the proposed mixing ratio of the raw asphalt of the first composition (Straight Asphalt) and the synthetic rubber (Styreme Butadiene) and the second composition of the rubber asphalt and carbon powder constituting the undercoat composition It is desirable to avoid.

상기 혼합비율이 ± 5중량％를 벗어나 함량이 미달일 경우에는 너무 걸죽한 형태가 되어 스프레이건으로 분사하는 것이 어렵게 되므로 작업성이 현저하게 낮아지게 되고, 함량이 너무 많을 경우에는 너무 묽은 상태가 되므로 스프레이건으로 작업시 차체 표면에 접착되지 못하고 흘러내리는 형태가 되므로 이 역시 작업이 불가능함과 아울러 언더코팅을 위한 두께형성이 어렵게 되는 원인이 되기 때문이다.When the mixing ratio is less than ± 5% by weight, the content is too thick, so it becomes difficult to spray with a spray gun, so the workability is remarkably low, and when the content is too high, the spray becomes too thin. This is because it is not possible to work on the surface of the body when the gun is not attached to the surface of the body, and this is also impossible because of the thickness of the undercoat is difficult to form.

상기 1조성물을 구성하는 스트레이트아스팔트는, 원유를 상압, 감압증류 장치 등을 통하여 경질분을 제거했을 때 마지막으로 남는 물질에는 분해되지 않는 역청질이 많이 함유되어 있는 것을 말하며, 침입도(針入度:아스팔트의 경도)가 40 이하인 것을 사용하며, 신도(伸度)가 크고 점착성, 방수성이 우수한 특성을 가진다.The straight asphalt constituting the composition 1 refers to a substance containing a bitumen that does not decompose when the crude oil is removed from the light component through atmospheric pressure, a reduced pressure distillation apparatus, or the like. The hardness of the asphalt) is 40 or less, and has high elongation, excellent adhesion and waterproofness.

상기 합성고무의 경우에는 강하고 단단하며 광택이 있는 특성에 의하여 스트레이트아스팔트와 혼합시 우수한 접착력을 가지면서 광택(표면밀도가 높아짐)으로 인하여 이물질의 흡착력을 배제하면서 고무 특성에 의하여 충격과 소음을 흡수하고 난연성의 특성을 가진다.In the case of the synthetic rubber, it absorbs shock and noise by the rubber property while eliminating the adsorption force of foreign substances due to its glossiness (surface density is increased) while having excellent adhesive strength when mixed with straight asphalt due to its strong, hard and glossy property. It has the property of flame retardancy.

상기 스트레이트아스팔트와 합성고무만을 혼합할 경우에는 젤과 같이 너무 점도가 높아 스프레이가 불가능하게 되므로 물을 혼합하여 스프레이가 가능한 형태로 묽은 상태가 되도록 한다.When only the straight asphalt and synthetic rubber are mixed, the spray is impossible because the viscosity is too high, such as gel, so that water can be mixed and diluted in a form that can be sprayed.

상기 2 조성물은 1조성물만으로 스프레이시 코팅 대상체에 쉽게 접착되지 않기 때문에 접착성을 높이면서도 정전기 발생을 억제 또는 배제하여 내오염성을 가지도록 함과 아울러 내부 건조시간을 단축시킬 수 있도록 하기 위함이다.Since the two compositions are not easily adhered to the coating object when spraying with only one composition, they are intended to reduce contamination and to reduce internal drying time while suppressing or excluding static electricity while increasing adhesion.

상기 2조성물을 구성하는 고무아스팔트는 아스팔트에 고무성분을 혼입시켜 신도(伸度)를 개선하고 연화점을 높여 방수성을 가지는 것이 특징이며, 카본분말의 경우에는 정전기 방지에 의하여 오염물(미세먼지 등)이 흡착되는 것을 방지하면서 건조의 용이성과 조성물의 중량감 및 강성을 높여 스프레이 과정에서 비산되어 날리는 것을 방지할 수 있는 특성을 가진다.Rubber asphalt constituting the two composition is characterized by having a rubber component in the asphalt to improve the elongation and increase the softening point to have water resistance, and in the case of carbon powder, contaminants (fine dust, etc.) are prevented by static electricity. While preventing adsorption, the ease of drying and the weight and rigidity of the composition are increased to prevent scattering during the spraying process.

상기와 같이 1조성물과 2 조성물을 각각 독립하여 상온 상태에서 고르게 혼합한 후에는 1조성물과 2조성물을 5 : 1의 비율로 혼합하여 언더코팅 조성물을 얻고자 할 경우에는 약 600rpm의 속도로 2분 이내에 고르게 혼합한 후 사용하는 것이 바람직한 데, 이는 교반 시간이 길어질 경우에는 조성물 자체가 굳어지기 시작하기 때문이다.As described above, after mixing the 1 composition and the 2 compositions independently at room temperature, when mixing the 1 composition and the 2 composition in a ratio of 5: 1, to obtain an undercoating composition at a speed of about 600 rpm for 2 minutes. It is preferred to use them evenly after mixing, since the composition itself starts to harden when the stirring time is prolonged.

실험예 1.Experimental Example 1

상기와 같이 완성된 언더코팅 조성물에 대하여 KSM 2109 방청유 일반시험 방법의 습윤,염수분무, 유하점, 저온부착성 시험을 수행하였고, 그 결과를 표 2에 나타내었다.Wetting, saline spray, dripping point, low temperature adhesion test of the general test method of KSM 2109 rust preventive oil was performed on the completed undercoat composition as described above, and the results are shown in Table 2.

또한 건조성능과 도장면에 대한 오염성을 확인하기 위하여 건조성능은 가로 150mm ×세로 8mm의 강판에 언더코팅 조성물을 0.5mm두께로 도포하여 매 3분마다 100g의 추를 도포 된 시료 위에 5초간 방치 후 언더코팅 조성물이 추에 묻어 나오지 않을 때까지의 시간을 측정한다.In addition, in order to check the drying performance and contamination on the painted surface, the drying performance was applied to a steel plate of 150 mm × 8 mm in width and 0.5 mm thick undercoating composition was placed on the sample coated with 100 g of weight every 3 minutes for 5 seconds. The time until the undercoat composition does not bury the weight is measured.

도장면에 대한 오염성능은 가로 150mm ×세로 8mm의 도장강판에 언더코팅 조성물을 1 ∼ 2 cc씩 4 ∼ 5방울 떨어 뜨려 70 ±2℃의 오븐 속에 72시간 방치시킨 후 석유로 언더코팅 조성물을 제거한 후 오염정도를 관찰하는 시험을 수행하였다.The staining performance on the painted surface was 4-5 drops of 1-2 cc each of the undercoating composition on a coated steel sheet of 150 mm × 8 mm in length, and the mixture was left in an oven at 70 ± 2 ° C for 72 hours to remove the undercoating composition. After the test was performed to observe the degree of contamination.

실험예 2.Experimental Example 2

상기와 같이 완성된 언더코팅 조성물을 실제 자동차의 차체 하부 전체에 스프레이어를 이용하여 고르게 도포하여 건조한 후 실차 시험을 수행하였다.The undercoating composition completed as described above was evenly applied by using a sprayer to the entire lower body of the vehicle and dried, and then a vehicle test was performed.

자동차의 차체 하부에 언더코팅을 수행하지 않은 상태에서의 공회전시 발생하는 소음을 측정한 결과 54㏈ 이었고, 본 발명의 언더코팅 조성물로 코팅을 수행한 상태에서의 공회전시 발생하는 소음은 46㏈로 현격하게 줄어들었음을 확인할 수 있었다.As a result of measuring noise generated during idling without undercoating on the body of the vehicle, the noise was generated at 54 Hz, and the noise generated during idling when the coating was performed with the undercoating composition of the present invention was 46 Hz. Significantly reduced could be confirmed.

또한, 자동차의 차체 하부에 언더코팅을 수행하지 않은 상태에서의 주행시 발생하는 소음을 측정한 결과 66㏈ 이었고, 본 발명의 언더코팅 조성물로 코팅을 수행한 상태에서의 주행시 발생하는 소음은 55㏈로 역시 현격하게 줄어들었음을 확인할 수 있었다.In addition, as a result of measuring the noise generated when running in the state under the undercoat of the vehicle is not carried out under the 66㏈, the noise generated when running in the state coated with the undercoating composition of the present invention is 55㏈ Again, it was confirmed that the reduction.

이러한 본 발명의 언더코팅 조성물의 용도를 자동차로 설명하고 있으나 일반적인 방수, 방청 및 방음을 위한 용도로도 사용 가능함은 당연할 것이다.Although the use of the undercoating composition of the present invention has been described as an automobile, it will be obvious that it can also be used for general waterproofing, rustproofing and soundproofing.

상기와 같은 본 발명의 언더코팅 조성물을 이용하여 자동차의 하부에 코팅을 수행하는 것은 물론, 휠커버와, 본네트의 저면, 휠하우스 및 도어패널에 까지 코팅수행이 가능하게 된다.Using the undercoating composition of the present invention as described above, as well as performing the coating on the lower part of the vehicle, the coating can be performed to the wheel cover, the bottom of the bonnet, the wheel house and the door panel.

이는 수성계이어서 코팅을 수행하더라도 냄새가 발생하지 않고, 건조된 상태에서도 고무성분에 의하여 경질상태로 경화되지 않고 고무를 누르면 들어가는 듯한 쿠션을 보유하게 되므로 도로를 주행하거나 비포장도로를 주행하는 과정에서 이물질이나 잔돌 등이 비산되어 언더코팅된 부위와 부딪치게 되더라도 충격음이 더 크게 발생하지 않고 흡수하여 소음을 저감시키게 되는 것이다.Since it is an aqueous system, it does not generate odor even when the coating is carried out, and it does not harden to a hard state by the rubber component even in the dried state, and it has a cushion that seems to be pressed into the rubber. Even if the rubble is scattered and collided with the undercoated part, the impact sound is not generated more and is absorbed to reduce the noise.

또한 조성물에 첨가된 카본분말이 정전기를 방지하게 됨과 아울로 조성물이 코팅된 표면이 매끄럽기 때문에 주행 과정에서 발생하는 미세먼지 등이 쉽게 흡착되는 것을 방지할 수 있게 되는 것이다.In addition, since the carbon powder added to the composition prevents static electricity and the surface coated with the composition is smooth, fine dust generated during the driving process can be easily prevented from being adsorbed.

Claims (2)

액상의 수성계 스트레이트아스팔트(Straight Asphalt) 50 ∼ 60 중량％와 액상의 합성고무(Styreme Butadiene) 35 ∼ 40 중량％ 및 물 5 ∼ 10 중량％를 함유하는 1조성물과;
고무아스팔트(Rubberized Ashpalt) 85 중량％에 카본분말 15 중량％를 함유하는 2조성물과;
상기 1조성물과 2조성물을 5 : 1의 비율로 고르게 혼합하여 얻는 것을 특징으로 하는 자동차용 언더코팅 조성물.1 composition containing 50-60 weight% of liquid aqueous straight asphalt, 35-40 weight% of liquid synthetic butadiene, and 5-10 weight% of water;
Two compositions containing 15% by weight of carbon powder in 85% by weight of rubberized ashpalt;
The undercoating composition for automobiles, which is obtained by uniformly mixing the first and second compositions in a ratio of 5: 1. 제 1 항에 있어서;
상기 1조성물과 2조성물을 5 : 1의 비율로 혼합하여 언더코팅 조성물을 얻고자 할 경우에는 약 600rpm의 속도로 2분 이내에 고르게 혼합하는 것을 특징으로 하는 자동차용 언더코팅 조성물.The method of claim 1, further comprising:
When the first composition and the second composition is mixed in a ratio of 5: 1 to obtain an undercoat composition, the undercoat composition for automobiles, characterized in that evenly mixed within 2 minutes at a speed of about 600rpm.
KR1020120025429A 2012-03-13 2012-03-13 The compsition of under body coating KR101349088B1 (en)

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