KR19980022477A - Automotive Undercoat Compositions - Google Patents
Automotive Undercoat Compositions Download PDFInfo
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- KR19980022477A KR19980022477A KR1019960041653A KR19960041653A KR19980022477A KR 19980022477 A KR19980022477 A KR 19980022477A KR 1019960041653 A KR1019960041653 A KR 1019960041653A KR 19960041653 A KR19960041653 A KR 19960041653A KR 19980022477 A KR19980022477 A KR 19980022477A
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Abstract
본 발명은 자동차용 언더 코팅 조성물에 관한 것으로, 중량비로 결합제로서 폴리비닐클로라이드 레진 20-28%, 내마모성을 위한 충진재 20-25%, 휘발성 하이드로 카본을 포함하여 건조가열시 팽창되는 마이크로밸룬(microballoon) 3-5%, 패널에의 부착성 향상을 위한 부착 보강재 2%, 가소제 35%, 기타 첨가제 10%로 이루어져 가열건조시 마이크로밸룬이 팽창경화되어 폼상태를 이룸에 따라 프레임, 패널등에 언더 코팅할 때 종래보다 50%이상 경량화를 달성할 수 있고, 방음효과도 크게 개선된다.The present invention relates to an undercoating composition for automobiles, and includes a microballoon that expands upon dry heating, including 20-28% polyvinyl chloride resin as a binder, 20-25% filler for abrasion resistance, and volatile hydrocarbons by weight. It consists of 3-5%, 2% of adhesion reinforcement, 35% of plasticizer, and 10% of other additives to improve adhesion to the panel. When the weight reduction can be achieved by 50% or more, and the sound insulation effect is greatly improved.
Description
본 발명은 자동차 언더 코팅재에 관한 것으로, 특히 도포전 액상의 중량 대비 도포후 고상의 중량비를 하향되게하여 자동차를 경량화하고 내마모성 및 방음성이 개선된 언더 코팅 조성물에 관한 것이다.The present invention relates to an automotive undercoating material, and more particularly, to an undercoating composition having a lighter weight and improved wear resistance and sound insulation by lowering the weight ratio of the solid phase after application to the weight of the liquid before application.
일반적으로, 자동차에는 쾌적한 승차감을 위하여 방진 및 방음재를 사용할 뿐만 아니라, 프레임과 외기에 노출된 패널등에는 방청 및 내마모성 등을 위하여 코팅재가 도포되어 있다. 특히 자동차 플로어 패널 저면과 휠하우스 인너판넬에는 미분쇄된 돌가루와 액상의 폴리비닐클로라이드(PVC)를 포함한 조성물로 언더 코팅한다.In general, in addition to the use of dustproof and soundproof materials for a comfortable ride comfort in the car, the panel and the panel exposed to the outside air is coated with a coating material for antirust and wear resistance. In particular, the floor of the automobile floor panel and the wheel house inner panel are undercoated with a composition containing finely ground stone powder and liquid polyvinyl chloride (PVC).
이러한 언더 코팅재는 예를들어 플로어 패널에 도포되어 외기에 노출된 패널 부식의 방지, 방음 및 방진 뿐만 아니라 주행중 바퀴에 의해 튀어 오르는 작은 돌에 의해 손상되거나 노면의 돌출된 부분에 패널이 긁히는 경우 패널 손상을 방지하게 되어 바디의 내구성을 향상시켜 준다.Such undercoatings are applied to floor panels, for example, to prevent panel corrosion, sound insulation and dust protection as well as to panels exposed to the outside air, as well as to damage the panels when they are damaged by small stones bouncing by the wheels during driving or when the panels are scratched by protruding parts of the road surface. It prevents the increase of durability of the body.
그러나, 상기 조성물의 언더 코팅재는 자동차 바디의 패널에 언더 코팅함으로써 목적하는 방청, 방식 및 내마모 효과를 얻지만 자동차 중량이 증대됨에 따라 자동차 주행에 따른 연료소모가 커지게 되어 에너지 절약차원에서 추진되는 자동차 경량화에 역행하게 되는 문제가 있었다.However, the undercoating material of the composition obtains the desired antirust, anticorrosion, and abrasion resistance by undercoating the panel of the car body, but as the weight of the car increases, the fuel consumption increases according to the driving of the car, thereby promoting energy saving. There was a problem against the weight reduction of automobiles.
본 발명은 종래의 고중량의 자동차 언더 코팅 조성물에 따른 문제점을 해소하도록 창안한 것으로 휘발성분을 포함하여 건조가열시 휘발됨에 따라 폼(Foam)이 형성되도록 하여 자동차의 경량화를 도모하고 방음 및 방진효과가 개선된 폼 타입의 자동차 언더 코팅 조성물의 제공을 목적으로 한다.The present invention has been devised to solve the problems caused by the conventional heavy-weight car undercoating composition, and includes a volatile component so that a foam is formed as it is volatilized during dry heating, thereby reducing the weight of the automobile and making soundproof and dustproof effects. An object is to provide an improved foam type automotive undercoating composition.
본 발명에 따른 자동차 언더 코팅 조성물은 중량비로 결합제로서 폴리비닐클로라이드 레진 20-28%, 내마모성을 위한 충진재 20-25%, 휘발성 하이드로 카본을 포함하여 건조가열시 팽창되는 마이크로밸룬(microballoon) 3-5%, 패널에의 부착성 향상을 위한 부착 보강재 2%, 가소제 35%, 기타 첨가제 10%로 조성된다.The automotive undercoating composition according to the present invention comprises 20-28% polyvinyl chloride resin as a binder by weight, 20-25% filler for abrasion resistance, and microballoon 3-5 expanded during dry heating, including volatile hydrocarbons. %, Adhesion reinforcement for improving adhesion to the panel 2%, plasticizer 35%, other additives 10%.
상기 충진재는 종래와 같이 돌가루로 이루어진다. 본 발명에 따라 충진재의 양을 종래보다 줄이는 반면 마이크로밸룬이 첨가된다. 상기 마이크로밸룬은 20-30㎛ 정도의 직경을 가지며 내부의 휘발성 하이드로카본을 열가소성수지가 감싸는 구조로서 조성물을 플로어 패널의 저면에 도포한 다음 건조를 위해 110~140℃로 가열하면 하이드로카본이 휘발되면서 직경이 80∼90㎛정도로 팽창하게 되고 냉각시에 따라 경화된다. 따라서, 언더 코팅된 조성물은 팽창된 마이크로밸룬에 의해 전체적으로 폼재를 형성하게 되므로 같은 두께의 종래 언더 코팅보다 50%정도 경량화 된다. 뿐만 아니라, 마이크로밸룬에 의해 진동과 음파의 전달이 차단되어 방음효과도 표 1에서 볼 수 있듯이 크게 개선된다.The filler is made of stone as in the prior art. In accordance with the present invention, microbaluns are added while reducing the amount of filler compared to the prior art. The micro-balloon has a diameter of about 20-30 μm, and a structure in which a thermoplastic resin surrounds the volatile hydrocarbon inside, and the composition is applied to the bottom of the floor panel, and then heated to 110 to 140 ° C. for drying. The diameter expands to about 80 to 90 µm and hardens upon cooling. Therefore, the undercoated composition forms a foam material as a whole by the expanded microballoon, so that it is about 50% lighter than the conventional undercoating of the same thickness. In addition, the transmission of vibration and sound waves are blocked by the micro balun, so the sound insulation effect is greatly improved as shown in Table 1.
A는 종래 언더 코팅조성물을 강판에 코팅한 경우의방음효과에 대한 그래프이고, B는 본 발명에 따라 언더 코팅재를 강판에 도포한 경우의 방음표과를 나타낸다. 상기 테스트 그래프로부터 본 발명의 언더 코팅재를 도포하여 가열건조한 상태에서 형성되는 팽창된 마이크로밸룬에 의해 8000∼20000Hz에서 종래보다 약 15㏈ 정도의 방음표과가 개선됨을 알 수 있다.A is a graph of the sound insulation effect when a conventional undercoating composition is coated on a steel sheet, and B is a soundproofing diagram when the undercoating material is coated on a steel sheet according to the present invention. From the test graph, it can be seen that the sound insulation degree of about 15 dB is improved at 8000 to 20000 Hz by the expanded microballoon formed by applying the undercoating material of the present invention in a heat-dried state.
본 발명에 따른 언더 코팅조성물을 프레임 및 패널에 언더코팅함으로써 팽창경화된 마이크로밸룬에 의해 종래 보다 50% 이상의 경량화를 달성할 수 있고 방음효과도 크게 개선된다.By undercoating the undercoating composition according to the present invention to the frame and the panel, it is possible to achieve a weight reduction of more than 50% by the expansion-cured microballoons and the sound insulation effect is greatly improved.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960041653A KR19980022477A (en) | 1996-09-23 | 1996-09-23 | Automotive Undercoat Compositions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960041653A KR19980022477A (en) | 1996-09-23 | 1996-09-23 | Automotive Undercoat Compositions |
Publications (1)
Publication Number | Publication Date |
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KR19980022477A true KR19980022477A (en) | 1998-07-06 |
Family
ID=66521356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019960041653A KR19980022477A (en) | 1996-09-23 | 1996-09-23 | Automotive Undercoat Compositions |
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KR (1) | KR19980022477A (en) |
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1996
- 1996-09-23 KR KR1019960041653A patent/KR19980022477A/en not_active Application Discontinuation
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