WO2019119252A1 - 一种能消除汽车密封件动态异响的水基涂料 - Google Patents

一种能消除汽车密封件动态异响的水基涂料 Download PDF

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WO2019119252A1
WO2019119252A1 PCT/CN2017/117087 CN2017117087W WO2019119252A1 WO 2019119252 A1 WO2019119252 A1 WO 2019119252A1 CN 2017117087 W CN2017117087 W CN 2017117087W WO 2019119252 A1 WO2019119252 A1 WO 2019119252A1
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water
based paint
vehicle
dynamic noise
agent
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PCT/CN2017/117087
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French (fr)
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陈正林
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陈正林
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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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • 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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes

Definitions

  • the invention belongs to the technical field of automobile coatings, and particularly relates to a water-based paint capable of eliminating dynamic abnormal sound of automobile seals.
  • Acoustic anomalies are a common type of automotive mechanical failure. When such a fault occurs, the driver of the car can hear a dull or sharp sound from the engine, or other parts can be rattled due to abnormal friction. This abnormal sound sometimes occurs. A certain frequency or interval alternates or does not appear to occur intermittently.
  • various parts such as the guide groove of the automobile glass, the door frame of the automobile, the trunk of the automobile, or the sunroof of the automobile are all abnormal.
  • the general solution is to use plastic or rubber sealing strips or sponge strips to fill the gap to reduce the abnormal noise of the car.
  • reduction does not mean elimination. This dynamic noise still occurs during the driving of the car, and the problem cannot be solved better with the seal or sponge strip alone.
  • the inventor has solved the technical problem of dynamic abnormal sound of automobile seals from a new perspective, water-based paint.
  • a water-based coating capable of eliminating dynamic abnormal sound of automobile seals which comprises an aqueous polyurethane resin, an aqueous polyacrylic resin, an aqueous epoxy resin and a film forming aid.
  • the aqueous polyurethane resin, the aqueous polyacrylic resin and the aqueous epoxy resin are both aqueous polymer emulsions, and the three polymer latex particles can be synergistically coalesced to form a continuous resin film, and the film forming auxiliary agent is added. It can improve the film formation mechanism and significantly improve the film formation quality, including significantly improving its adhesion and bond strength. Therefore, a water-based paint having a good adhesion and a bond strength is formed by an aqueous polyurethane resin, an aqueous polyacryl resin, an aqueous epoxy resin, and a film forming aid.
  • the film-forming auxiliary agent may select an ether alcohol high polymer, such as dipropylene glycol dimethyl ether, propylene glycol butyl ether, diethylene glycol butyl ether acetate or propylene glycol methyl ether acetate, more preferably, a film forming auxiliary It is dipropylene glycol dimethyl ether.
  • an ether alcohol high polymer such as dipropylene glycol dimethyl ether, propylene glycol butyl ether, diethylene glycol butyl ether acetate or propylene glycol methyl ether acetate, more preferably, a film forming auxiliary It is dipropylene glycol dimethyl ether.
  • coating additives can be selected to improve performance.
  • a wetting agent, a leveling agent, a dispersing agent, an antifoaming agent, a silicone, an organic fluorine, a polytetrafluoroethylene, a colorant, and a thickener are added.
  • all of the auxiliary agents are added, that is, the water-based paint further includes a wetting agent, a leveling agent, a dispersing agent, an antifoaming agent, a silicone, an organic fluorine, a polytetrafluoroethylene, and a color. Pulp and thickener.
  • the respective weight percentage content ranges are formulated through multiple tests, preferably as follows:
  • the silicone is preferably a silicone resin or a silane coupling agent.
  • the organic fluorine is preferably a fluorine-containing olefin.
  • the color paste is preferably a black color paste.
  • the hydrophobic agent is preferably polytetrafluoroethylene (PTFE).
  • the water-based paint can be prepared by mixing and stirring the components uniformly.
  • the water-based paint When in use, the water-based paint is sprayed on the rubber glass guide groove of the automobile, the door frame sponge strip, the automobile tail box seal strip, the automobile sunroof seal strip and the like, and baked, and after the reaction is completed, the dynamic difference of the automobile seal can be eliminated. ring.
  • a water-based coating is formed on the rubber substrate.
  • the coating can have abrasion resistance, weather resistance, good adhesion and bond strength. .
  • the addition of a wetting agent can reduce the surface tension of the rubber substrate; the addition of a leveling agent can increase the leveling property of the coating; the dispersing agent increases the uniformity of the coating; and the addition of the defoaming agent can eliminate the bubbles of the coating during the stirring process; Adding silicone can increase the friction coefficient of the coating to prevent sliding; increasing the organic fluorine can reduce the surface tension of the coating; increasing the hydrophobic agent can improve the hydrophobic properties of the coating; increasing the black colorant can further improve the weatherability of the coating; increasing the thickener can Increase the density and viscosity of the coating.
  • the water-based paint of the invention is sprayed on the rubber substrate of the automobile glass guide groove, the automobile door frame sponge strip, the automobile tail box seal strip, the automobile sunroof seal strip and the like, and is baked, and after the reaction is completed, the loudness is tested, and the test results are all ⁇ 3SONE (Song) solves the problem of abnormal noise that occurs in the state of motor sports.
  • the water-based paint of the embodiment capable of eliminating the dynamic abnormal sound of the automobile seal which is composed of the following components and weight percentages:
  • the water-based paint of the embodiment capable of eliminating the dynamic abnormal sound of the automobile seal which is composed of the following components and parts by weight:
  • the water-based paint of the embodiment capable of eliminating the dynamic abnormal sound of the automobile seal which is composed of the following components and parts by weight:
  • the water-based paint prepared in the above embodiments 1-3 capable of eliminating the dynamic abnormal sound of the automobile seal is sprayed on the rubber substrate of the sponge of the automobile door frame and baked, and after the reaction is completed, the car occurs under the movement state. The loudness is tested.
  • the test results are shown in the following table:
  • Example 1 Example 2
  • Example 3 Loudness / SONE 2.2 2.1 2.3

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

一种能消除汽车密封件动态异响的水基涂料，包括水性聚氨酯树脂、水性聚丙烯酸树脂、水性环氧基树脂和成膜助剂；以重量百分比计，优选水性聚氨酯树脂35-45％，水性聚丙烯酸树脂20-30％，水性环氧基树脂15-25％，成膜助剂5-15％。将水基涂料喷涂在汽车玻璃导槽、汽车门框海绵条、汽车尾箱密封条、汽车天窗密封条等橡胶基材上并烘烤，反应完毕后，能够解决汽车运动状态下发生的异响问题。

Description

一种能消除汽车密封件动态异响的水基涂料 技术领域
本发明属于汽车涂料技术领域，具体涉及一种能消除汽车密封件动态异响的水基涂料。
背景技术
随着汽车在中国社会和家庭中的逐渐普及，汽车使用过程中如何对出现的机械故障进行诊断找出原因并给予适当的处理就显得非常重要，各种机械故障的出现会对汽车行驶安全和使用效率产生重大影响，严重时会对驾驶员及他人的人身和财产安全构成严重威胁，因此无论对于维修人员还是驾驶员来说，对汽车机械故障出现的原因进行正确分析和诊断就显得非常重要，有助于提升汽车使用的安全性和效率，更好的满足生产生活的需要。
声响异常是一种比较常见的汽车机械故障，出现这种故障时汽车驾驶人能够听到发动机发出沉闷或尖锐的响声，或者其他部件因为非正常摩擦而发出顿挫声，这种异常声响有时会以一定的频率或间隔时间交替出现，或者没有任何规律间歇性地出现。
据统计约70％的汽车机械故障都会表现出一定的异响，因此通过倾听的方法对汽车机械故障进行诊断非常实用，随着汽车使用时间的延长和机械零部件磨损的加快，在汽车制动工作时由于零部件契合之间的间隙加大，使得工作时经常出现异响，通过倾听汽车的异响可以判定汽车转动是否平衡，通过对异响发生时的特征诸如是否连续、是否存在规律、是否间歇性发生等，就可以基本判定故障发生的部位。
一般地，如汽车玻璃的导槽、汽车门框、汽车尾箱或汽车天窗等各个部位都是会发生异响之处。为了解决异响，一般的解决办法都是采用塑料或者橡胶的密封条或海绵条填充在间隙中来减少汽车的异响。但是，减少不等于消除。在汽车行驶的过程中，这种动态的异响仍然会发生，仅仅凭密封条或海绵条无法更好地解决问题。
发明内容
有鉴于此，发明人从一个全新的角度出发，用水基涂料的方式来解决汽车密封件动态异响的技术问题。
因此，本发明的目的在于提供一种能消除汽车密封件动态异响的水基涂料。
所采用的技术方案为：
一种能消除汽车密封件动态异响的水基涂料，其包括水性聚氨酯树脂、水性聚丙烯酸树脂、水性环氧基树脂和成膜助剂。
在本发明技术方案中，水性聚氨酯树脂、水性聚丙烯酸树脂与水性环氧基树脂均是水性聚合物乳液，三者聚合物乳胶粒子可以协同聚结形成连续的树脂膜，增加成膜助剂后,能够改善成膜机理，显著提高成膜质量，包括显著提高其附着力和粘结强度。因此，通过水性聚氨酯树脂、水性聚丙烯酸树脂、水性环氧基树脂和成膜助剂形成水基涂料，该水基涂料具有良好的附着力和粘结强度。
为了更好地成膜，具有较好的好的附着力和粘结强度，通过实验选择水性聚氨酯树脂、水性聚丙烯酸树脂、水性环氧基树脂和成膜助剂的较佳的重量百分比的含量范围。选择含量范围如下：
Figure PCTCN2017117087-appb-000001
其中，成膜助剂可以选择醚醇类高聚物，例如二丙二醇二甲醚、丙二醇丁醚、二乙二醇丁醚醋酸酯或丙二醇甲醚醋酸酯，更为优选地，成膜助剂为二丙二醇二甲醚。
为了使水基涂料的性能更为丰富和稳定，可以选择涂层助剂来改善性能。例如，添加润湿剂、流平剂、分散剂、消泡剂、有机硅、有机氟、聚四氟乙烯、色浆和增稠剂中的一种或多种。可以优选地，添加全部的助剂，即，水基涂料还包括润湿剂、流平剂、分散剂、消泡剂、有机硅、有机氟、聚四氟乙烯、色 浆和增稠剂。
为使助剂更好地发挥作用，通过多次试验，调配好各自的重量百分比含量范围，优选地如下：
Figure PCTCN2017117087-appb-000002
其中，所述有机硅优选为硅树脂或硅烷偶联剂。所述有机氟优选为含氟烯烃。所述色浆优选为黑色色浆。所述疏水剂优选为聚四氟乙烯(PTFE)。
制备时，只要将各组分混合搅拌均匀，即可制成水基涂料。
使用时，将水基涂料喷涂在汽车玻璃导槽，汽车门框海绵条，汽车尾箱密封条，汽车天窗密封条等橡胶基材上并烘烤，反应完毕后，即可消除汽车密封件动态异响。
这样，在橡胶基材上就形成了水基涂层。该水基涂层中，水性聚氨酯树脂、水性聚丙烯酸树脂、水性环氧基树脂和成膜助剂成膜后，能够使涂层具有耐磨性、耐候性和良好的附着力和粘结强度。
增加润湿剂可以起到降低橡胶基材表面张力的作用；增加流平剂可以增加涂料的流平性；分散剂增加涂料的均匀性；增加消泡剂可以消除涂料在搅拌过程中的气泡；增加有机硅可以提高涂料的摩擦系数防止滑动；增加有机氟可以降低涂料的表面张力；增加疏水剂可以提高涂料的疏水性能；增加黑色色浆可以进一步提高涂层的耐候性；增加增稠剂可以提高涂层的密度和粘度。
本发明的有益效果在于：
将本发明水基涂料喷涂在汽车玻璃导槽、汽车门框海绵条、汽车尾箱密封条、汽车天窗密封条等橡胶基材上并烘烤，反应完毕后，对响度进行测试，测试结果均为＜3SONE(宋)，解决了汽车运动状态下发生的异响问题。
具体实施方式
下面结合优选的实施例进一步描述本发明的技术方案，但是本发明要求的保护范围并不局限于此。
实施例1
本实施例的能消除汽车密封件动态异响的水基涂料，其由如下组分和重量百分比组成：
Figure PCTCN2017117087-appb-000003
实施例2
本实施例的能消除汽车密封件动态异响的水基涂料，其由如下组分和重量份组成：
Figure PCTCN2017117087-appb-000004
实施例3
本实施例的能消除汽车密封件动态异响的水基涂料，其由如下组分和重量份组成：
Figure PCTCN2017117087-appb-000005
Figure PCTCN2017117087-appb-000006
将以上实施例1-3制得的能消除汽车密封件动态异响的水基涂料，喷涂在汽车门框海绵条的橡胶基材上并烘烤，反应完毕后，对汽车在运动状态下发生的响度进行测试，测试结果参见下表：
检测项目 实施例1 实施例2 实施例3
响度/SONE 2.2 2.1 2.3
通过上表可知，通过喷涂本本发明水基涂料，解决了汽车运动状态下发生的异响问题。

Claims (10)

  1. 一种能消除汽车密封件动态异响的水基涂料，其特征在于，其包括水性聚氨酯树脂、水性聚丙烯酸树脂、水性环氧基树脂和成膜助剂。
  2. 根据权利要求1所述的能消除汽车密封件动态异响的水基涂料，其特征在于，以重量百分比计，包括如下组分：
    Figure PCTCN2017117087-appb-100001
  3. 根据权利要求1所述的能消除汽车密封件动态异响的水基涂料，其特征在于，所述成膜助剂为二丙二醇二甲醚。
  4. 根据权利要求1-3任一所述的能消除汽车密封件动态异响的水基涂料，其特征在于，还包括润湿剂、流平剂、分散剂、消泡剂、有机硅、有机氟、聚四氟乙烯、色浆和增稠剂中的一种或多种。
  5. 根据权利要求4所述的能消除汽车密封件动态异响的水基涂料，其特征在于，还包括润湿剂、流平剂、分散剂、消泡剂、有机硅、有机氟、聚四氟乙烯、色浆和增稠剂。
  6. 根据权利要求5所述的能消除汽车密封件动态异响的水基涂料，其特征在于，还包括
    Figure PCTCN2017117087-appb-100002
    Figure PCTCN2017117087-appb-100003
  7. 根据权利要求6所述的能消除汽车密封件动态异响的水基涂料，其特征在于，所述有机硅为硅树脂或硅烷偶联剂。
  8. 根据权利要求6所述的能消除汽车密封件动态异响的水基涂料，其特征在于，所述有机氟为含氟烯烃。
  9. 根据权利要求6所述的能消除汽车密封件动态异响的水基涂料，其特征在于，所述色浆为黑色色浆。
  10. 据权利要求6所述的能消除汽车密封件动态异响的水基涂料，其特征在于，所述疏水剂为聚四氟乙烯。
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CN102766382A (zh) * 2012-08-09 2012-11-07 广州慧谷化学有限公司 一种镂空碱洗铝水性保护涂料及其制备方法与应用
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CN107151521A (zh) * 2016-03-04 2017-09-12 上海蓝欧化工科技有限公司 一种用于汽车车门密封条的消除异响的耐磨涂料

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