CN102358807A - Hydrophobic nano composite automobile finish and preparation method thereof - Google Patents
Hydrophobic nano composite automobile finish and preparation method thereof Download PDFInfo
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- CN102358807A CN102358807A CN2011102159305A CN201110215930A CN102358807A CN 102358807 A CN102358807 A CN 102358807A CN 2011102159305 A CN2011102159305 A CN 2011102159305A CN 201110215930 A CN201110215930 A CN 201110215930A CN 102358807 A CN102358807 A CN 102358807A
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Abstract
The invention provides a hydrophobic nano composite automobile finish which has hydrophobic and self-cleaning capacities, and a preparation method for the composite automobile finish. Nano silicon dioxide is treated by nano dispersion, and is dispersed into various components of an acrylic automobile finish under the cavitation of ultrasonic waves, and the acrylic finish is modified. The automobile finish has the characteristics of high adhesion, high hardness, high bending strength, water, acid, alkali and gasoline resistance, hydrophobicity, self cleaning, pollution and dust prevention and the like.
Description
Technical field
The invention provides the automotive compounded finish paint of a kind of hydrophobic nano, have hydrophobic, automatically cleaning ability, disclose the preparation method of this automotive compounded finish paint simultaneously, belong to the guard technology field of car surface.
Background technology
In recent years, hydrophobic film has had more wide application in numerous areas such as scientific research and industrial and agricultural production, people's daily life.Hydrophobic technology also has realistic meaning for building industry, metal industry etc. antiseptic and rustproof and antifouling very much.Particularly in recent years the high speed development of new and high technologies such as microelectronic system, photoelectron element and nanosecond science and technology is given the research of hydrophobic coating and is applied to vitality.But up to this point, still do not have a kind of automobile finish of moulding can directly apply to automobile and show spraying with hydrophobicity and automatically cleaning ability.At present, fewer, wherein comparatively successful both at home and abroad for the research of the hydrophobicity aspect of automobile finish, produced like German eazY Clean Technologies company and to be the coating of automobile with the use of ship surface; And Harbin Research Inst. of Chemical Industry develop a kind of sticking power good, smooth transparent, didirtresistance is strong, is used for the hydrophobic coating of automobile finish, it is main body that this coating adopts novel modified silicon oil; Behind Over emulsfication; Process emulsion, can be sprayed at the automobile finish surface, dry back forms the stability coating.This coating is coated in former automobile finish surface, is similar to the car surface waxing latter and seals glaze, and hydrophobicity is not the character that automobile finish directly has.In addition, this coating persistence is poor, needs periodic replacement.And cost is quite high, can not popularize production and can not replace existing automobile finish coating directly to be sprayed on priming paint and the floating coat.Therefore, have hydrophobic automobile finish and have very important in theory researching value and actual application value.
Summary of the invention
The invention discloses the automotive compounded finish paint of a kind of hydrophobic nano; Hydrophobicity, automatically cleaning ability are incorporated into the automobile finish field; Make car surface can have hydrophobic and the automatically cleaning ability; Can practice thrift a large amount of car washing waters and cost, and strengthen the antiseptic power of automobile to a certain extent.
The invention also discloses the preparation method of the automotive compounded finish paint of a kind of hydrophobic nano, cost is lower, technology is simple, be convenient to suitability for industrialized production.
The automotive compounded finish paint of hydrophobic nano of the present invention,It is characterized in that by following raw materials by weight portion than processing:
Nano silicon 0.4 ~ 50; Acrylic type automobile finish 50 ~ 150; Nano-dispersed auxiliary agent 0.2 ~ 20; Organic solvent 20 ~ 200.
Described nano dispersion fluid auxiliary agent is selected from a kind of in 3-triethoxysilyl-1-propylamine and the γ-glycidyl ether oxygen propyl trimethoxy silicane.
Described organic solvent is selected from ETHYLE ACETATE and the YLENE one or both and uses with.
The automotive compounded finish paint of hydrophobic nano of the present inventionProduction technique may further comprise the steps:
1) nano dispersion fluid auxiliary agent liquid is put into reaction kettle, add above-mentioned organic solvent, stir 20 ~ 40 minutes (rotating speed is 300 ~ 800 rev/mins), keep whipped state, add nano silicon again, obtain the nano silicon dispersion liquid; With UW nano material separating apparatus, dispersion treatment 20 ~ 40 minutes, temperature are 30 ~ 55 ℃, and ultrasonic frequency is 20 ~ 40kHz.
2) automobile finish is added in the reaction kettle, controlled temperature is 30 ~ 40 ℃, and rotating speed is to stir 1 ~ 2 hour under 200 ~ 1000 rev/mins of conditions, makes it thorough mixing, and state is even, stable.
3) with step 2) finish paint put into the ultrasonic dispersing appearance, with ultrasonic dispersing 30 ~ 90 minutes, temperature was 30 ~ 55 ℃, ultrasonic frequency is 20 ~ 40kHz, suction filtration removes and desolvates, and obtains hydrophobic top coat of the present invention.
Below experiment shows why hydrophobic nano composite acrylic acid automobile finish of the present invention has excellent hydrophobic property:
In order to verify effect of the present invention and the mechanism of explaining the hydrophobic interaction of the automotive compounded finish paint of this dewatering nano better; After the automotive compounded finish paint of the resulting hydrophobic nano of the present invention and former automobile finish sprayed; Measure the contact angle of water on its coating surface respectively with German Dataphysics OCA20 contact angle measurement; As shown in Figure 3, with the configuration of surface that sem (SEM) is observed finish paint coating surface of the present invention, as shown in Figure 1; X-ray photoelectron spectroscopic analysis appearance (XPS) is analyzed the chemical constitution of coating surface of the present invention, and is as shown in Figure 2.SEM observes surfaceness and the configuration of surface focus on observing coating surface, and whether XPS analysis focuses on analyzing nano silicon (is mark with the element silicon) and be dispersed among the paint film uniformly and on the surface of paint film.
(referring to Fig. 3 a), and the contact angle of the automotive compounded finish paint surface water of hydrophobic nano of the present invention reaches 139.9 ° (seeing Fig. 3 b), and obviously the present invention has hydrophobic effect clearly to be merely 80.3 ° by the visible former coating surface water contact angle of Fig. 3.Under sem, observe, find that even about 10 microns to the 30 microns projection of diameter that must distribute of coating surface of the present invention (Fig. 1 a), and each projection is that more nano level substratum shape structures are formed (Fig. 1 b) by diameter all.This micro-nano secondary structure is by the nanometer silicon dioxide particle that adds caused (Fig. 2 is visible, and nano silicon is dispersed on the surface of paint film).And the microtexture of this micro-nano secondary structure and lotus leaf surface is closely similar.This structure just is the major cause that lotus leaf has super-hydrophobicity.The existence of this just micro-nano secondary structure just makes the vinylformic acid automobile finish of nano composite material of the present invention that the good hydrophobic effect has just been arranged.It is thus clear that the present invention has important theoretical research to be worth and actual application value.
Positively effect of the present invention is:Nano silicon is handled with nano dispersion fluid; And utilize cavitation effect of ultrasonic waves that it is distributed in each component of vinylformic acid automobile finish; Acrylic acid top-coat is carried out modification, and automobile finish has that sticking power is good, hardness is high, flexural strength is big, water-fast, acidproof, alkaline-resisting, anti-gasoline; Hydrophobic automatically cleaning, antifouling characteristics such as dustproof.Have high water contact angle and low surface energy.Resistance to chemical attack and automatic cleaning action, reduced water the residence time of lacquer painting and with the touch opportunity of metal substrate, have the effect of opposing automobile metal material corrosion.The paint film ply adhesion is good, and hardness of paint film is high, flexural strength is big, has the favorable mechanical mechanical property, and and floating coat between binding ability is preferably arranged.Glossiness is high, and color is bright and new, and state is evenly fine and smooth, shelf-stable, and sight is strong.Ginkgo Biloba Leaf Extract, temp. variation resistant, weather resisteant are good, the finish paint long service life.Be applicable to the area that weather condition are abominable and the environment of various deep-etchings.
Description of drawings
Fig. 1 is the electron scanning micrograph of automobile finish film surface of the present invention;
Fig. 2 is the XPS analysis result of automobile finish film of the present invention;
Fig. 3 is the photo that has sprayed the coating surface water contact angle of general-utility car finish paint (a) and automobile finish of the present invention (b) respectively.
Embodiment:
Through further distance description the present invention of following examples; And do not limit the present invention in any way; Under the prerequisite that does not deviate from technical solution of the present invention, any change or change that those of ordinary skills that the present invention did are realized easily all will fall within the claim scope of the present invention.
Embodiment 1
3-triethoxysilyl-1-propylamine of 20g is put into reaction kettle; Add 200g ETHYLE ACETATE, 170g YLENE, stir 30 minutes (rotating speed is 600 rev/mins), keep whipped state; Add the 50g nano silicon again, obtain the nano silicon dispersion liquid; With UW nano material separating apparatus, dispersion treatment 30 minutes, temperature are 45 ℃, and ultrasonic frequency is 30kHz.
500g automobile finish (being selected from firm determination acrylic type automobile finish 2k52) is added in the reaction kettle, and controlled temperature is 35 ℃, stirs 1.5 hours (rotating speed is 400 rev/mins), makes it thorough mixing, and state is even, stable.Mixing solutions is put into the ultrasonic dispersing appearance, and with ultrasonic dispersing 60 minutes, temperature was 45 ℃, and ultrasonic frequency is 30kHz, and suction filtration removes and desolvates, and obtains hydrophobic top coat of the present invention.
Embodiment 2
γ-glycidyl ether oxygen propyl trimethoxy silicane of 20g is put into reaction kettle, add 400g ETHYLE ACETATE, stir 40 minutes (rotating speed is 400 rev/mins), keep whipped state, add 50 nano silicons again, obtain the nano silicon dispersion liquid.With UW nano material separating apparatus, dispersion treatment 20 minutes, temperature are 30 ℃, and ultrasonic frequency is 40kHz.
500g automobile finish (being selected from firm determination acrylic type automobile finish RZ9000) is added in the reaction kettle, and controlled temperature is 30 ℃, stirs 1 hour (rotating speed is 800 rev/mins), makes it thorough mixing, and state is even, stable.Mixing solutions is put into the ultrasonic dispersing appearance, and with ultrasonic dispersing 45 minutes, temperature was 30 ℃, and ultrasonic frequency is 40kHz, and suction filtration removes and desolvates, and obtains hydrophobic top coat of the present invention.
Embodiment 3
3-triethoxysilyl-1-propylamine of 50g is put into reaction kettle, add 500g YLENE, stir 20 minutes (rotating speed is 800 rev/mins), keep whipped state, add the 55g nano silicon again, obtain the nano silicon dispersion liquid; With UW nano material separating apparatus, dispersion treatment 40 minutes, temperature are 55 ℃, and ultrasonic frequency is 20kHz.
600g automobile finish (being selected from firm determination acrylic type automobile finish 1KS22B) is added in the reaction kettle, and controlled temperature is 40 ℃, stirs 2 hours (rotating speed is 300 rev/mins), makes it thorough mixing, and state is even, stable.Mixing solutions is put into the ultrasonic dispersing appearance, and with ultrasonic dispersing 90 minutes, temperature was 55 ℃, and ultrasonic frequency is 20kHz, and suction filtration removes and desolvates, and obtains hydrophobic top coat of the present invention.
Claims (2)
1. automotive compounded finish paint of hydrophobic nano is characterized in that by following raw materials by weight portion than processing:
Nano silicon 0.4 ~ 50; Acrylic type automobile finish 50 ~ 150; Nano-dispersed auxiliary agent 0.2 ~ 20; Organic solvent 20 ~ 200;
Described nano dispersion fluid auxiliary agent is selected from a kind of in 3-triethoxysilyl-1-propylamine and the γ-glycidyl ether oxygen propyl trimethoxy silicane;
Described organic solvent is selected from ETHYLE ACETATE and the YLENE one or both and uses with.
2. the production technique of the automotive compounded finish paint of the described hydrophobic nano of claim 1 may further comprise the steps:
1) nano dispersion fluid auxiliary agent liquid is put into reaction kettle, add above-mentioned organic solvent, rotating speed is 300 ~ 800 rev/mins, stirs 20 ~ 40 minutes, keeps whipped state, adds nano silicon again, obtains the nano silicon dispersion liquid; With UW nano material separating apparatus, dispersion treatment 20 ~ 40 minutes, temperature are 30 ~ 55 ℃, and ultrasonic frequency is 20 ~ 40kHz;
2) automobile finish is added in the reaction kettle, controlled temperature is 30 ~ 40 ℃, and rotating speed is 200 ~ 1000 rev/mins, stirs 1 ~ 2 hour, makes it thorough mixing, and state is even, stable;
3) with step 2) finish paint put into the ultrasonic dispersing appearance, with ultrasonic dispersing 30 ~ 90 minutes, temperature was 30 ~ 55 ℃, ultrasonic frequency is 20 ~ 40kHz, suction filtration removes and desolvates, and promptly gets.
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| CN201110215930.5A CN102358807B (en) | 2011-07-30 | 2011-07-30 | Hydrophobic nano composite automobile finish and preparation method thereof |
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| CN201110215930.5A CN102358807B (en) | 2011-07-30 | 2011-07-30 | Hydrophobic nano composite automobile finish and preparation method thereof |
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| CN102358807A true CN102358807A (en) | 2012-02-22 |
| CN102358807B CN102358807B (en) | 2014-05-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103572656A (en) * | 2013-11-20 | 2014-02-12 | 江南大学 | Preparation method of water repellent agent for packaging paper and paper board and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1394927A (en) * | 2002-05-16 | 2003-02-05 | 复旦大学 | Preparation method of high scratch resistance nano compound polyurethane paint |
| CN101481581A (en) * | 2009-01-20 | 2009-07-15 | 太原理工大学 | Nano modified organosilicon acroleic acid polyurethane coating and preparation |
| CN101838496A (en) * | 2010-04-09 | 2010-09-22 | 南京工业大学 | Super-hydrophobic polyurethane/ oxide nano particle hybrid coating material and preparation method thereof |
| CN101914190A (en) * | 2010-08-17 | 2010-12-15 | 浙江理工大学 | Preparation method of modified nano-silica monomer dispersion liquid |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1394927A (en) * | 2002-05-16 | 2003-02-05 | 复旦大学 | Preparation method of high scratch resistance nano compound polyurethane paint |
| CN101481581A (en) * | 2009-01-20 | 2009-07-15 | 太原理工大学 | Nano modified organosilicon acroleic acid polyurethane coating and preparation |
| CN101838496A (en) * | 2010-04-09 | 2010-09-22 | 南京工业大学 | Super-hydrophobic polyurethane/ oxide nano particle hybrid coating material and preparation method thereof |
| CN101914190A (en) * | 2010-08-17 | 2010-12-15 | 浙江理工大学 | Preparation method of modified nano-silica monomer dispersion liquid |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103572656A (en) * | 2013-11-20 | 2014-02-12 | 江南大学 | Preparation method of water repellent agent for packaging paper and paper board and application thereof |
| CN103572656B (en) * | 2013-11-20 | 2016-03-16 | 江南大学 | The preparation method of wrapping paper and paperboard grade (stock) water-repelling agent and application thereof |
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