KR20040009613A - Resin composition of acryl copolymer for automobil anti-vibration materials - Google Patents

Resin composition of acryl copolymer for automobil anti-vibration materials Download PDF

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KR20040009613A
KR20040009613A KR1020020043617A KR20020043617A KR20040009613A KR 20040009613 A KR20040009613 A KR 20040009613A KR 1020020043617 A KR1020020043617 A KR 1020020043617A KR 20020043617 A KR20020043617 A KR 20020043617A KR 20040009613 A KR20040009613 A KR 20040009613A
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weight
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water
resin composition
molecular weight
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임창국
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현대자동차주식회사
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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
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/10—Homopolymers or copolymers of methacrylic acid esters
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • 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
    • C08K3/34—Silicon-containing compounds
    • 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
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate

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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)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: An acryl copolymer resin composition for the vibration damping material of vehicles is provided, to improve vibration damping property and lightweightness. CONSTITUTION: The acryl copolymer resin composition comprises 30-47 parts by weight of a water-soluble copolymer of an acryl resin and a butadiene rubber; 15-25 parts by weight of mica; 20-35 parts by weight of calcium carbonate; 10-15 parts by weight of talc; 1-2 parts by weight of an anti-sagging agent; 3-5 parts by weight of a dispersant; 1-2 parts by weight of a bubbler removing agent; and 10-15 parts by weight of water. Preferably the water-soluble copolymer comprises 15-20 parts by weight of a methacryl-based one with a molecular weight of 2,500-3,500 and a glass transition temperature of 50 deg.C, an ethyl meta-based one with a molecular weight of 6,500-8,500 and a glass transition temperature of 30 deg.C, and 5-12 parts by weight of a butyl acryl-based with a molecular weight of 12,000-15,000 and a glass transition temperature of 15 deg.C; and the water is an ionized water with a resistance of 1 MegaOhm or more.

Description

차량 제진재용 아크릴 공중합 수지 조성물{Resin composition of acryl copolymer for automobil anti-vibration materials}Resin composition of acryl copolymer for automobil anti-vibration materials

본 발명은 차량 제진재용 아크릴 공중합 수지 조성물에 관한 것으로서, 더욱 상세하게는 종래의 아스팔트 제진재에 비하여 제진 성능이 우수하면서도 공정 자동화및 차량의 경량화가 가능한 수용성 아크릴 공중합 수지 조성물에 관한 것이다.The present invention relates to an acrylic copolymer resin composition for vehicle vibration damping materials, and more particularly, to a water-soluble acrylic copolymer resin composition having excellent vibration damping performance as compared to conventional asphalt vibration damping materials and capable of process automation and light weight of a vehicle.

차량의 플로어(FLOOR)나 대쉬 팬널(DASH PANEL)등의 제진및 강성을 보강할목적으로 사용하는 제진 부재는 지금까지 주로 아스팔트 재질의 성형시트로 이루어진 것을 사용해 왔다. 이러한 종래의 아스팔트 제진 부재는 우선 제진 성형물을 전착한 후, 차체 플로어 등 제진 처리가 필요한 차체 부위에 작업자가 수작업으로 제진 부재를 탑재한 다음, 세차례의 경화 오븐(OVEN), 즉 실러(SEALER)오븐, 중도 오븐, 상도 오븐을 통과시키면서 열에 의해 제진 부재를 차체에 융착하였다.The damping member used to reinforce vibration damping and rigidity, such as the floor of the vehicle (FLOOR) and the dash panel (DASH PANEL) has been used mainly made of the molded sheet of asphalt material. The conventional asphalt vibration damping member is first electrodeposited the vibration damping molding, and then the operator manually mounts the vibration damping member on a body part that requires dust removal treatment such as a vehicle floor, and then washes three hardening ovens (OVEN), that is, a sealer oven. The vibration damping member was fused to the vehicle body by heat while passing through the middle oven and the top oven.

그런데 이러한 종래의 아스팔트 제진 시트는 그 주성분이 석유를 정제할때 최종 단계에서 얻어지는 고분자량의 탄화물질, 즉 피치(PITCH), 콜타르(COAL TAR)등으로 이루어져있기 때문에 제진재로서 필요한 물성, 특히 고온시의 강성, 저온시의 취성등이 취약한 단점이 있다. 그리고 작업자가 반드시 수작업으로 제진 공정을 수행해야 하기 때문에 작업 부위가 균일하지 않은 문제점이 있고, 특히 제진 시트를 융착하기위한 소부 과정에서 아스팔트 재료내에 잔류하는 유기용제가 휘발하여 대기오염을 유발하는 문제점도 있었다.However, such conventional asphalt damping sheet is composed of a high molecular weight carbonaceous material obtained in the final step when refining petroleum, that is, pitch (PITCH), coal tar (COAL TAR), etc. The stiffness of the city, brittleness at low temperatures, etc. are vulnerable. In addition, there is a problem in that the work area is not uniform because the operator must perform the dust removal process by hand, and in particular, the organic solvent remaining in the asphalt material volatilizes during the firing process for welding the vibration damping sheet to cause air pollution. there was.

이러한 문제점 이외에도 종래의 아스팔트 제진재는 비중이 높아서 차량의 경량화에도 어려움이 있으며, 최근 차량의 저소음화 요구에 따라 제진 성능의 향상이라는 측면에서도 개선이 요구되어 왔다.In addition to these problems, conventional asphalt vibration damping materials have a high specific gravity, which makes it difficult to reduce the weight of vehicles, and in recent years, improvements have been required in terms of improvement of vibration damping performance in accordance with demand for low noise of vehicles.

이에 본 발명자들은 종래에 사용되어온 아스팔트 제진재의 문제점을 개선하기 위하여 연구 노력한 결과, 수용화된 아크릴 수지와 부타디엔 고무의 공중합체를 주성분으로하는 수지 조성물을 차량 제진재로 사용하므로서, 본 발명을 완성하게되었다.Accordingly, the present inventors have made efforts to improve the problems of conventional asphalt vibration damping materials, and completed the present invention by using a resin composition containing a copolymer of an acryl resin and butadiene rubber as a main component as a vehicle vibration damping material. Was done.

본 발명은 종래의 아스팔트 제진재에 비하여 제진 성능이 우수하면서도 공정의 자동화및 차량의 경량화가 가능한 차량 제진재용 아크릴 공중합 수지 조성물을 제공하는데 그 목적이 있다.An object of the present invention is to provide an acrylic copolymer resin composition for a vehicle vibration damper which is superior in dust removal performance compared to the conventional asphalt vibration damper and which can automate the process and reduce the weight of the vehicle.

도 1은 본 발명에 따른 제진재의 온도 구간별 경도값을 종래의 아스팔트 제진재와 비교하여 나타낸 그래프이고,1 is a graph showing the hardness value for each temperature section of the vibration damper according to the present invention in comparison with the conventional asphalt vibration damper,

도 2는 본 발명에 따른 제진재의 온도 구간별 제진계수값을 종래의 아스팔트 제진재와 비교하여 나타낸 그래프이다.Figure 2 is a graph showing the vibration damping coefficient value for each temperature section of the vibration damper according to the present invention compared with the conventional asphalt vibration damper.

본 발명의 차량 제진재용 아크릴 공중합 수지 조성물은 아크릴 수지와 부타디엔 고무의 수용성 공중합체 30 ∼ 47 중량부, 마이카 15 ∼ 25 중량부, 탄산칼슘 20 ∼ 35 중량부, 탈크 10 ∼ 15 중량부, 흐름 방지제 1 ∼ 2 중량부, 분산제 3 ∼ 5 중량부, 기포 제거제 1 ∼ 2 중량부, 물 10 ∼ 15 중량부로 이루어 지는 것을 그 특징으로 한다.The acrylic copolymer resin composition for vehicle vibration damper of the present invention is a water-soluble copolymer of acrylic resin and butadiene rubber 30 to 47 parts by weight, mica 15 to 25 parts by weight, calcium carbonate 20 to 35 parts by weight, talc 10 to 15 parts by weight, flow inhibitor It is characterized by consisting of 1 to 2 parts by weight, 3 to 5 parts by weight of a dispersant, 1 to 2 parts by weight of the bubble remover, and 10 to 15 parts by weight of water.

이와 같은 본 발명을 더욱 상세히 설명하면 다음과 같다.Referring to the present invention in more detail as follows.

본 발명의 차량 제진재용 아크릴 공중합 수지 조성물은 주체수지와 충진제, 첨가제 그리고 용제로 이루어 진다.The acrylic copolymer resin composition for vehicle vibration damper of the present invention is composed of a main resin, a filler, an additive, and a solvent.

먼저 주체수지는 아크릴 수지와 부타디엔 고무를 공중합시켜서된 에멀젼(EMULSION)형 공중합체로서, 특히 아크릴 수지의 말단에 수소(H)대신 아민기(-NH 또는 -NH2)를 치환하여 수용화시킨것을 사용한다. 따라서 본 발명의 수지 조성물은 에멀젼 형태로서 물을 용제로 사용할수 있다.First, the principal resin is an acrylic resin with a screen having an emulsion (EMULSION) copolymer by copolymerizing a butadiene rubber, in particular by replacing a hydrogen (H) instead of the amine group (-NH or -NH 2) at the terminal of the acrylic resin receiving use. Therefore, the resin composition of this invention can use water as a solvent as an emulsion form.

본 발명에서 주체수지의 전체 함량은 30 ∼ 47 중량부인데, 분자량에 따라 3종류로 차별화된 아크릴 수지 공중합체로 이루어진다. 즉, 분자량이 2,500 ∼ 3,500인 메타크릴계(유리전이온도 - 50℃)가 15 ∼ 20 중량부, 분자량이 6,500 ∼ 8,500인 에틸메타계(유리전이온도 - 30℃)가 10 ∼ 15 중량부, 분자량이 12,000 ∼ 15,000인 브릴아크릴계(유리전이온도 - 15℃)가 5 ∼ 12 중량부이다.In the present invention, the total content of the main resin is 30 to 47 parts by weight, and consists of three types of acrylic resin copolymers differentiated according to molecular weight. That is, 15-20 weight part of the methacryl type (glass transition temperature -50 degreeC) of molecular weight 2,500-3,500, 10-15 weight part of ethyl methacrylate (glass transition temperature -30 degreeC) of molecular weight 6,500-8,500, The beryl acryl type (glass transition temperature-15 degreeC) whose molecular weight is 12,000-15,000 is 5-12 weight part.

이때, 분자량이 2,500 ∼ 3,500인 소분자량 아크릴 수지의 함량이 15중량부 이하로 되면 저온에서의 취성이 증가되어 좋지 않고, 반대로 20중량부 이상이 되면 저온 취성의 감소 효과가 더 이상 증가되지 않는다. 분자량 6,500 ∼ 8,500인 중분자량 수지는 분자량이 12,000 ∼ 15,000인 고분자량 수지를 첨가하기 위하여 경도, 마모성등의 물성 완충적 역할을 하는데, 그 함량이 10중량부 이하이면, 고가의 저분자 분자량 수지를 더 첨가 하여야 하는 단점이 있고, 반대로 15중량부 이상이면, 고온시 연화 증가를 막는 고분자량 수지의 함량을 줄여야 하므로 바람직하지 않다.At this time, when the content of the small-molecular weight acrylic resin having a molecular weight of 2,500 to 3,500 is 15 parts by weight or less, brittleness at low temperatures is not good. On the contrary, when the content is 20 parts by weight or more, the effect of reducing low temperature brittleness is no longer increased. In order to add a high molecular weight resin having a molecular weight of 12,000 to 15,000, a medium molecular weight resin having a molecular weight of 6,500 to 8,500 plays a buffer role in physical properties such as hardness and abrasion, and when the content is 10 parts by weight or less, an expensive low molecular weight resin is further added. If there is a disadvantage to be added, on the contrary 15 parts by weight or more, it is not preferable because the content of high molecular weight resin to prevent the increase in softening at high temperature.

충진제로서는 판상형 마이카(MICA), 탄산칼슘, 탈크(TALC)를 포함한다. 먼저 마이카는 조성물내 분산시 배향을 고려하여 판상형을 사용하는데, 그 함량은 15 ∼ 25 중량부이다. 만일 마이카의 함량이 15중량부 이하이면 강성이 저하되며, 25중량부 이상이면 필요이상의 강성이 발현되어 도리어 물성이 취약하게 된다.Fillers include plate-shaped mica (MICA), calcium carbonate and talc (TALC). First, mica uses a plate type in consideration of the orientation during dispersion in the composition, the content is 15 to 25 parts by weight. If the mica content is 15 parts by weight or less, the stiffness is lowered. If the mica content is 25 parts by weight or more, more than necessary rigidity is expressed and the physical properties become weak.

탄산칼슘은 증량을 목적으로 하는 체질 안료로서 주로 증량 및 스프레이시, 적정 비중을 유지하도록하는 기능을 한다. 탄산칼슘의 함량은 20 ∼ 35중량부 인데, 만일 20중량부 미만이면 증량의 효과가 없고, 35중량부 초과이면 다른 강성보강용 안료의 첨가가 곤란하여 바람직하지않다.Calcium carbonate is a extender pigment for the purpose of increasing the function mainly to maintain the proper specific gravity during the increase and spray. The content of calcium carbonate is 20 to 35 parts by weight, if less than 20 parts by weight, there is no effect of the increase, if more than 35 parts by weight is difficult to add other stiffening pigment is not preferable.

탈크는 강성 보강 및 증량의 기능을 하며, 판상형 마이카가 고가의 재료이므로 이를 대체하는 기능을 한다. 탈크의 함량은 10 ∼ 15중량부 인데, 10중량부 미만이면 첨가에 의한 강성 보강효과를 얻을수 없고, 15중량부 초과이면 편석의 발생과 저온에서의 취성이 증가하므로 바람직하지 않다.Talc functions as a rigid reinforcement and an increase in weight, and replaces it because the plate-shaped mica is an expensive material. The content of talc is 10 to 15 parts by weight, but less than 10 parts by weight can not obtain a rigid reinforcement effect by the addition, if it is more than 15 parts by weight segregation and brittle at low temperature is not preferable.

첨가제로서는 흐름방지제 1 ∼ 2 중량부, 분산제 3 ∼ 5 중량부, 기포 제거제 1 ∼ 2 중량부를 포함한다. 이때, 흐름방지제로는 MgO + Al2O3+ SiO2를 사용할 수 있고, 분산제로는 폴리옥심 에틸렌과 비이온 계면활성제를 사용할 수 있으며, 기포제거제로는 아마인유를 사용할 수 있다. 이들 첨가제의 함량이 본 발명의 제한범위 미만이면 원하는 효과를 충분히 얻을 수 없고, 그 초과이면 증량에 따른 효과를 거둘수없다.As an additive, 1-2 weight part of flow inhibitors, 3-5 weight part of dispersing agents, and 1-2 weight part of bubble removers are included. At this time, MgO + Al 2 O 3 + SiO 2 may be used as the flow inhibitor, polyoxime ethylene and a nonionic surfactant may be used as the dispersant, and linseed oil may be used as the antifoaming agent. If the content of these additives is less than the limit of the present invention, the desired effect cannot be sufficiently obtained, and if the content of the additive is greater than the above-mentioned effect, the effect of the increase can not be achieved.

마지막으로 용제로는 물을 포함하되 특히, 저항이 1㏁ 이상인 이온수 10 ∼ 15 중량부를 포함한다. 본 발명의 아크릴 공중합 수지 조성물은 물을 용제로 포함하기 때문에 열에 의한 융착이나 용제 휘발에 의해 건조되는 것이 아니라, 조성물내의 물이 증발할때 발생하는 모세관 현상에 따라 분자들이 모세관 힘에 의해 강력하게 응집되면서 자연건조된다. 따라서, 기존의 도장공정인 가열경화(150℃)공정에서는 물론, 상온에서도 건조가 가능하여 별도의 가열건조 공정은 생략할 수 있다.Finally, the solvent includes water, but in particular 10 to 15 parts by weight of ionized water having a resistance of 1 kPa or more. Since the acrylic copolymer resin composition of the present invention contains water as a solvent, it is not dried by heat fusion or solvent volatilization, but the molecules are strongly aggregated by capillary force according to the capillary phenomenon generated when water in the composition evaporates. It is dried naturally. Therefore, in the existing coating process of the heat curing (150 ℃) process, as well as can be dried at room temperature, a separate heat drying process can be omitted.

본 발명의 아크릴 공중합 수지 조성물을 이용한 전착제 도포공정은 종래의통산적인 전착라인 이후의 공정과 달리, 상도 건조 공정 이후의 의장라인 투입 이전에도 도포가 가능하다. 또한, 본 발명의 수지 조성물은 액상으로서 스프레이 등의 방식으로 차에 도포할 수 있기 때문에 제진 공정을 자동화 할 수 있다.Electrodepositing agent coating process using the acrylic copolymer resin composition of the present invention, unlike the conventional process after the conventional electrodeposition line, it is possible to apply even before the design line input after the top coat drying process. Moreover, since the resin composition of this invention can be apply | coated to a car as a liquid form by spraying etc., a dust removal process can be automated.

이하, 본 발명을 다음의 실시예에 의거하여 더욱 상세히 설명하겠는바, 본 발명이 실시예에 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail based on the following examples, but the present invention is not limited to the examples.

실시예 1Example 1

다음 표 1과 같은 조성 성분 및 함량을 갖는 아크릴 공중합 수지 조성물을 종래의 방법으로 제조한다.Next, an acrylic copolymer resin composition having a composition component and content as shown in Table 1 is prepared by a conventional method.

( 함량단위 : 중량부 )(Unit of content: parts by weight) 구분division 구성성분Ingredient 함량content 비고Remarks 주체수지Juche Resin 분자량이 2,500∼3,500인메타아크릴계 공중합체Methacryl-based copolymer having a molecular weight of 2,500 to 3,500 1717 건설화학, 아크릴 MMAConstruction Chemistry, Acrylic MMA 분자량이 6,500∼8,500인에틸메타계 공중합체Ethyl methacrylate copolymer having a molecular weight of 6,500 to 8,500 1212 건설화학, 아크릴 HEMAConstruction Chemistry, Acrylic HEMA 분자량이 12,000∼15,000인브틸아크릴계 공중합체Butyl acryl-type copolymer whose molecular weight is 12,000-15,000 1010 건설화학, 아크릴 BAConstruction Chemistry, Acrylic BA 충진제Filler MICAMICA 2020 일본 아사히, #MESH40Japan Asahi, # MESH40 CaCO3 CaCO 3 3030 왕표 중탄, #100Royal Bund, # 100 TALCTALC 1212 왕표 중탄, #100Royal Bund, # 100 첨가제additive MgO+Al2O3+SiO2 MgO + Al 2 O 3 + SiO 2 1One 일본 유니온 화성, ATTAJapan Union Mars, ATTA 폴리옥심 에틸렌 +비이온 계면활성제Polyoxime Ethylene + Nonionic Surfactants 22 일본 일방사 유지공업,DESPOL 300Japan's one-sided maintenance industry, DESPOL 300 아미인유Army oil 1One 일본 욱전화공, 아데카네트Japanese telephone operator, Adekanet 용제solvent 이온수Ionized water 1212

에어리스 건(AIRLESS GUN)을 사용하여 상기 표 1의 공중합 수지 조성물을 차량용 전착(ED) 철판에 700 ∼ 800㎛ 두께로 도포한 다음, 제진성등 각종 물성과 도막의 성능을 평가 하고, 그 결과를 종래의 아스팔트형 제진제와 비교하여 다음 표2에 나타낸다.The airless gun (AIRLESS GUN) was used to apply the copolymer resin composition shown in Table 1 to the vehicle electrodeposited (ED) iron plate at a thickness of 700 to 800 μm, and then evaluated various physical properties such as vibration damping properties and performance of the coating film. It is shown in Table 2 below compared with the conventional asphalt type vibration damper.

물성Properties 아스팔트형제진제Asphalt Damping Agent 실시예1Example 1 비고Remarks 경도Hardness -30℃-30 ℃ 90 이상over 90 6565 JIS A 경도JIS A Hardness 20℃20 ℃ 7575 5555 JIS A 경도JIS A Hardness 70℃70 ℃ 2525 4040 JIS A 경도JIS A Hardness 비중importance 1.50 ∼ 1.751.50-1.75 0.78 ∼ 0.880.78 to 0.88 비중계hydrometer 소부성Baking 양호함Good 양호함Good 160℃ 30분간 소부Baking at 160 ℃ for 30 minutes 내수성Water resistance 양호함Good 양호함Good JIS K 5400 으로 평가,50℃ 온수 240 시간 침적Assessed by JIS K 5400, 50 hours hot water deposition 240 hours 내식성Corrosion resistance 양호함Good 양호함Good JIS K 5400 으로 평가,9.1 항 1000 시간 평가Evaluated as JIS K 5400, Clause 9.1 rated 1000 hours 내충격성Impact resistance 양호함Good 양호함Good JIS K 5400 으로 평가,8.9 항Evaluated as JIS K 5400, Clause 8.9 내마모성Wear resistance 양호함Good 양호함Good JIS K 5400 으로 평가,300gram 추 높이 50㎝Evaluated by JIS K 5400, 300gram weight 50cm 제진성Damping 20℃20 ℃ 0.1350.135 0.1250.125 주파수 분석기(B&K 2035)Frequency Analyzer (B & K 2035) 40℃40 ℃ 0.040.04 0.1080.108 주파수 분석기(B&K 2035)Frequency Analyzer (B & K 2035) 60℃60 ℃ 0.020.02 0.0770.077 주파수 분석기(B&K 2035)Frequency Analyzer (B & K 2035)

또한, -30 ℃ 내지 70 ℃의 온도에서 각 온도 구간별로 제진재의 경도를 측정하고 그 결과를 도 1에 그래프로 나타내었다. 그리고, 0 ℃ ∼ 60 ℃의 온도에서 각 온도 구간별로 제진계수를 측정하고 그 결과를 도 2에 그래프로 나타내었다.In addition, the hardness of the vibration damper for each temperature section at a temperature of -30 ℃ to 70 ℃ was measured and the results are shown in the graph in FIG. In addition, vibration damping coefficients were measured for each temperature section at a temperature of 0 ° C. to 60 ° C., and the results are shown graphically in FIG. 2.

상기 표 2및 도 1, 2의 결과로부터 알 수 있는 바와 같이, 본 발명의 아크릴 공중합 수지조성물은 종래의 아스팔트 제진제에 비하여 온도별로 우수한 도막 성능 및 제진 성능을 보였고, 특히 저온에서의 취성 증가가 적고, 고온에서도 스티프니스(STIFFNESS)를 유지하여 넓은 온도 분포에 따른 고른 제진 성능을 나타내었다.As can be seen from Table 2 and the results of FIGS. 1 and 2, the acrylic copolymer resin composition of the present invention showed excellent coating performance and vibration damping performance at different temperatures as compared with the conventional asphalt dust removal agent, and particularly, increased brittleness at low temperatures. It is small and maintains stiffness even at high temperature, and shows even dust removal performance according to wide temperature distribution.

본 발명에 따른 아크릴 공중합 수지 조성물은 비중이 0.85로서, 종래의 아스팔트의 1.6에 비하여 비중이 약 50% 수준에 불과하기 때문에 차량의 경량화를 통한 연비향상에도 기여할 수 있다. 그 외에도 수용성이기 때문에 환경오염을 염려할 필요가 없으며, 스프레이 작업이 가능하기 때문에 공정이 편리하고, 로보트를 이용한 공정 자동화도 가능할 것으로 기대된다.The acrylic copolymer resin composition according to the present invention has a specific gravity of 0.85, and since the specific gravity is only about 50% as compared to 1.6 of the conventional asphalt, it may also contribute to fuel efficiency improvement through weight reduction of the vehicle. In addition, because it is water-soluble, there is no need to worry about environmental pollution, and because it is possible to spray, it is expected that the process is convenient and the process automation using a robot is also possible.

Claims (3)

아크릴 수지와 부타디엔 고무의 수용성 공중합체 30 ∼ 47 중량부, 마이카 15 ∼ 25 중량부, 탄산칼슘 20 ∼ 35 중량부, 탈크 10 ∼ 15 중량부, 흐름 방지제 1 ∼ 2중량부, 분산제 3 ∼ 5 중량부, 기포 제거제 1 ∼ 2 중량부, 물 10 ∼ 15 중량부로 이루어지는것을 특징으로 하는 차량 제진재용 아크릴 공중합 수지 조성물.30 to 47 parts by weight of water-soluble copolymer of acrylic resin and butadiene rubber, 15 to 25 parts by weight of mica, 20 to 35 parts by weight of calcium carbonate, 10 to 15 parts by weight of talc, 1 to 2 parts by weight of flow inhibitor, and 3 to 5 weights of dispersant Part, 1 to 2 parts by weight of the bubble remover, 10 to 15 parts by weight of water acrylic copolymer resin composition for a vehicle vibration damper. 제 1 항에 있어서, 아크릴 수지와 부타디엔 고무의 수용성 공중합체는 분자량이 2,500 ∼ 3,500인 메타크릴계(유리전이온도 - 50℃) 15 ∼ 20 중량부, 분자량이 6,500 ∼ 8,500인 에틸메타계(유리전이온도 - 30℃) 10 ∼ 15 중량부, 분자량이 12,000 ∼ 15,000인 브릴아크릴계(유리전이온도 - 15℃) 5 ∼ 12 중량부인것을 특징으로 하는 조성물.The water-soluble copolymer of acrylic resin and butadiene rubber is 15 to 20 parts by weight of a methacryl-based (glass transition temperature-50 ° C) having a molecular weight of 2,500 to 3,500, and an ethyl methacrylate (glass to a molecular weight of 6,500 to 8,500). Transition temperature-30 ° C) 10 to 15 parts by weight, and 5 to 12 parts by weight of a briryl acrylic (glass transition temperature-15 ° C) having a molecular weight of 12,000 to 15,000. 제 1 항에 있어서, 물은 저항이 1㏁ 이상인 이온수인것을 특징으로 하는 조성물.The composition according to claim 1, wherein the water is ionized water having a resistance of 1 kPa or more.
KR1020020043617A 2002-07-24 2002-07-24 Resin composition of acryl copolymer for automobil anti-vibration materials KR20040009613A (en)

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KR100804927B1 (en) * 2005-07-01 2008-02-20 아이신카코 가부시키가이샤 Water-based coated-type vibration damping material

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US4591672A (en) * 1983-08-31 1986-05-27 Pioneer Electronic Corporation Loud speaker assembly
JPH01278337A (en) * 1988-04-30 1989-11-08 Nitto Denko Corp Bonded sheet or film for vibration damping
JPH10202775A (en) * 1997-01-23 1998-08-04 Cosmo Sogo Kenkyusho:Kk Damping sheet
JPH11116764A (en) * 1997-10-17 1999-04-27 Jsr Corp Vibration-damping rubber composition
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KR100804927B1 (en) * 2005-07-01 2008-02-20 아이신카코 가부시키가이샤 Water-based coated-type vibration damping material

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