CN104231712A - Preparation method of automotive topcoat based on nano diamond packing with high wear resistance - Google Patents
Preparation method of automotive topcoat based on nano diamond packing with high wear resistance Download PDFInfo
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- CN104231712A CN104231712A CN201410442463.3A CN201410442463A CN104231712A CN 104231712 A CN104231712 A CN 104231712A CN 201410442463 A CN201410442463 A CN 201410442463A CN 104231712 A CN104231712 A CN 104231712A
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Abstract
The invention relates to a preparation method of an automotive topcoat based on nano diamond packing with high wear resistance. The method comprises the following steps: pretreating original nano diamond and carrying out surface treatment, surface color change and dispersion treatment on the processed nano diamond. The nano diamond packing prepared by the method can be evenly mixed with various automobile topcoats, has good dispersity, does not change the original color of the automotive paint, can improve the hardness of the automotive topcoat to 6H-7H, increase the wear resistance of the automotive topcoat so that the automotive paint can be effectively prevented from being scratched by hard objects and can resist the impact of sand and stones, slight automobile collision, sandstorms, rain or snow and severe environments; in addition, the topcoat is strong in adhesive force and good in weather fastness, can keep the brightness of the automotive paint and can ensure the automobile to be beautiful for a long time.
Description
Technical field
The invention belongs to paint technology field, be specifically related to a kind of preparation method of the automobile finish based on high-wearing feature nano-diamond filler.
Background technology
Social development is rapid, and automobile comes into huge numbers of families, and the hardness value of automobile finish coating is related to the wearing quality in automobile finish face and the mobility of some mechanical functions, is also an index of automotive check quality.Automobile finish in use can be subject to the impact of various external force: be subject to the grains of sand at high speed traveling, slungshot hits, be subject to external force to scratch, also leaving scratch than being easier to when colliding, lacquer painting directly with dry cloth or excessively dirty oily mop wiping, easily scratches by the car of common paint when clean.In addition, the time one is long, and uviolizing, the corrosion of acid rain and chemical will cause the decline of the wear resistance of genuine car paint, weathering resistance and corrosion resistance nature.Automobile finish just tarnishes, and surface is rugged, scarred.
The hardness improving automobile finish effectively can improve glossiness and the wear resistance of car lacquer painting, car paint is made effectively to keep out hard object scraping, vehicle is slightly wiped and is touched, dust storm and sleety weather can better be kept out, resist severe environment (high temperature, severe cold, acid, salt, hit, grind), keep the brightness of car paint, make automobile attractive in appearance lastingly.The hardness of car paint is weighed according to national standard " GB/T 6739-2006 paint and varnish pencil method measures hardness of paint film ", can be divided into 9B ~ 9H totally 20 classes.The hardness of genuine car paint is general all in the hardness of 2H ~ 4H pencil.Adding metal-powder is at present a kind of conventional method improving automobile finish hardness.
Diamond is the material that known occurring in nature is the hardest, integrates the new function material of excellent heat, light, sound, electromagnetism, chemical property simultaneously.Inner at diamond crystal, each carbon atom is combined closely with 4 carbon atoms of surrounding, forms a kind of three-dimensional structure of densification, makes diamond have the maximum hardness of occurring in nature.Diadust joins existing application in lubricating oil as a kind of anti-wear agent.Nano diamond joins in automobile finish as a kind of filler, effectively can improve car paint hardness, resist various invasion and attack.But directly add Nano diamond, have particle agglomeration sedimentation, problem that color changes slightly.
Use the Nano diamond of explosion method synthetic as nano material, due to the high activity of its particle surface and the functional group of absorption and chemical bond connection, the effect of chemical bond can be formed with matrix.But Nano diamond is of a size of 1 ~ 100nm, belong to sub-micron-powder, because it has the higher surface energy of high-ratio surface sum, be in a kind of thermodynamic instability state, very easily produce spontaneous agglomeration each other, make particle diameter become large, automobile finish can be made to occur macroscopic particle, even occur that the phenomenon of trickling assembled by car paint.Simultaneously due to the adding of additive in building-up process, Nano diamond is color slightly, can slightly change car paint color after adding automobile finish.
Summary of the invention
Based on the problems referred to above, the object of this invention is to provide a kind of preparation method of the automobile finish based on high-wearing feature nano-diamond filler, by the surface modification to Nano diamond particle, change colour, overcome the shortcoming that reunion sedimentation easily occurs particle, have uniform and stable, good dispersity, do not change the automobile finish that the advantages such as car paint primary colors are suitable for all kinds, color.
The object of the present invention is achieved like this:
Based on a preparation method for the automobile finish of high-wearing feature nano-diamond filler, it is characterized in that: comprise original Nano diamond pre-treatment, changed colour and dispersion treatment in processed Nano diamond surface treatment, surface, its step:
Step 1. pre-treatment: by original Nano diamond and strong oxidizing property acid-respons, treatment temp is 80 DEG C, treatment step is for be soaked in excessive strong oxidizing property acid solution by pending sample, and heated and stirred, be incubated 2 ~ 3 hours, then elimination acid solution, take out Nano diamond, again with pure water cleaning to neutral, put into baking oven and be warmed to 150 ~ 200 DEG C and carry out drying for standby;
Step 2. surface modification: the Nano diamond good to pre-treatment adopts coupling agent to carry out surface modification, get the oil soluble coupling agent of Nano diamond quality 0.5 ~ 1.0%, by the acetone diluted of 2 ~ 5 times of quality multiples, 30 minutes are fully disperseed by ultrasonic wave, Water Tank with Temp.-controlled limit heating edge high-speed stirring is put into after adding Nano diamond, tank temperature is no more than 60 DEG C, stirs and makes it abundant mixing in 1 hour, carry out surface modification treatment to Nano diamond; After stirring completes, tank is heated to 100 DEG C, acetone is fully volatilized, take out the Nano diamond that modification is good, put into baking oven and dry, bake out temperature is 120 DEG C, drying time is 5 hours, stand-by after then the mixture after oven dry being left standstill 24 hours in kiln;
Changing colour in step 3. surface: in ball grinder, loads abrading-ball, adds ball grinder, ball grinder is put into ball mill in the Nano diamond 1 ~ 5g of modification, the ratio of color alternation agent 0.1 ~ 0.5g, is ball milling 12 hours under the condition of 300 ~ 400rpm at rotating speed;
Step 4. mixes: get automobile finish and inject high speed dispersor, modified Nano diamond, hyper-dispersant and thinner is added by the synchronous stream of proportioning, after high speed dispersor disperses 2 hours, then send into ultrasonic disperser and disperse 1 hour, make high-wearing feature Nano diamond automobile finish.
Described acid with strong oxidizing property is selected from dense H
2sO
4, dense HNO
3, HClO
4one or more mixtures.
Described surface-modifying agent is silane coupling agent or titanate coupling agent.
Described color alternation agent is selected from one or more in titanium white, lithopone, cadmium yellow, toluidine red, red iron oxide, phthalocyamine series etc. according to the primary colors of finish paint, must toning extremely former paint solid colour.
Described dispersion agent be polyester type, polyether-type, polyacrylate, polyolefins hyper-dispersant one or more.
Described proportioning is weight: automobile finish 95 ~ 97 parts, Nano diamond 2 ~ 4 parts, hyper-dispersant 0.5 ~ 1 part, and thinner 3 ~ 10 parts is formulated.
The invention has the beneficial effects as follows: high-wearing feature nano-diamond filler of a kind of general automobile finish paint provided by the invention and preparation method thereof, can with all kinds automobile finish Homogeneous phase mixing, good dispersity, do not change car paint primary colors.Nano-diamond filler prepared by present method is applied in automobile finish, the hardness of automobile finish can be made to bring up to 6H ~ 7H, be better than automobile finish hardness common at present, make car lacquer painting have high rigidity, wear-resisting, scratch-resistant, car paint is effectively kept out, and hard object scratches, the shock of the grains of sand and stone, vehicle is slightly wiped and is touched, better keep out dust storm and sleety weather and severe environment, and lacquer painting strong adhesion, good weatherability, thus keep the brightness of car paint, make automobile attractive in appearance lastingly.
Embodiment
Embodiment 1
(1) original Nano diamond is soaked in excessive dense HNO
3in, and be heated to 80 DEG C of stirrings, be incubated 3 hours, then elimination acid solution, take out Nano diamond, then with pure water cleaning to neutral, be warmed to 160 DEG C in feeding drying shed and carry out drying for standby.
(2) silane coupling agent of Nano diamond quality 0.7% is got, by the acetone diluted of 4 times of quality multiples, 30 minutes are fully disperseed by ultrasonic wave, Water Tank with Temp.-controlled limit heating edge high-speed stirring is put into after adding Nano diamond, tank temperature is no more than 60 DEG C, stir and make it abundant mixing in 1 hour, surface modification treatment is carried out to Nano diamond.After stirring completes, tank is heated to 100 DEG C, acetone is fully volatilized, take out the Nano diamond that modification is good, put into baking oven and dry, bake out temperature is 120 DEG C, drying time is 5 hours, stand-by after then the mixture after oven dry being left standstill 24 hours in kiln.
(3) in ball grinder, load abrading-ball, add the Nano diamond 5g of modification, then add 0.2g ferric oxide red colorant, ball sealer grinding jar, puts into ball mill by ball grinder, is ball milling 12 hours under the condition of 400rpm at rotating speed.
(4) get automobile finish and inject high speed dispersor, by automobile finish 97 parts, Nano diamond 2 parts, polyester type ultra-dispersant agent 0.5 part, thinner 7 parts is formulated, after high speed dispersor disperses 2 hours, then send into ultrasonic disperser and disperse 1 hour, make high-wearing feature Nano diamond automobile finish.
Embodiment 2
Similar to embodiment 1 step, difference is that dense H is selected in pre-treatment
2sO
4and HClO
4mixture soak original Nano diamond, properties-correcting agent adopt titanate coupling agent, the weight of mixing is automobile finish 95 parts, Nano diamond 4 parts, polyester type ultra-dispersant agent 1 part, thinner 7 parts preparation.
For in embodiment 1,2, automobile finish, Nano diamond, hyper-dispersant and thinner disperse in high speed dispersor, and it adds proportioning is weight: automobile finish 95 ~ 97 parts, Nano diamond 2 ~ 4 parts, hyper-dispersant 0.5 ~ 1 part, thinner 3 ~ 10 parts.
Following table 1 is the contrast of two kinds of embodiments and former car paint:
Table 1 performance test data
| Performance | Former car paint | Embodiment 1 | Embodiment 2 |
| Pencil hardness, H | 3 | 6 | 7 |
| Sticking power (drawing circle method), level | 1 | 1 | 1 |
| Splitting resistance, level | 1 | 1 | 1 |
| Weathering resistance | Good | Good | Good |
The hardness of car paint is by national standard " GB/T 6739-2006 paint and varnish pencil method measures hardness of paint film ", sticking power is by " cross cut test of GB9286-1998 paint and varnish paint film ", splitting resistance is by " GB/T 6742-2007| paint and varnish pliability test (cylinder axis) ", and weathering resistance detects by " GB 1767-1979 paint film weatherability assay method ".
Above-described embodiment is only the explanation to product of the present invention, not makes any pro forma restriction to the present invention.Within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. based on a preparation method for the automobile finish of high-wearing feature nano-diamond filler, it is characterized in that: comprise original Nano diamond pre-treatment, changed colour and dispersion treatment in processed Nano diamond surface treatment, surface, its step:
Step 1. pre-treatment: by original Nano diamond and strong oxidizing property acid-respons, treatment temp is 80 DEG C, treatment step is for be soaked in excessive strong oxidizing property acid solution by pending sample, and heated and stirred, be incubated 2 ~ 3 hours, then elimination acid solution, take out Nano diamond, again with pure water cleaning to neutral, put into baking oven and be warmed to 150 ~ 200 DEG C and carry out drying for standby;
Step 2. surface modification: the Nano diamond good to pre-treatment adopts coupling agent to carry out surface modification, get the oil soluble coupling agent of Nano diamond quality 0.5 ~ 1.0%, by the acetone diluted of 2 ~ 5 times of quality multiples, 30 minutes are fully disperseed by ultrasonic wave, Water Tank with Temp.-controlled limit heating edge high-speed stirring is put into after adding Nano diamond, tank temperature is no more than 60 DEG C, stirs and makes it abundant mixing in 1 hour, carry out surface modification treatment to Nano diamond; After stirring completes, tank is heated to 100 DEG C, acetone is fully volatilized, take out the Nano diamond that modification is good, put into baking oven and dry, bake out temperature is 120 DEG C, drying time is 5 hours, stand-by after then the mixture after oven dry being left standstill 24 hours in kiln;
Changing colour in step 3. surface: in ball grinder, loads abrading-ball, adds ball grinder, ball grinder is put into ball mill in the ratio of modified Nano diamond 1 ~ 5g, color alternation agent 0.1 ~ 0.5g, is ball milling 12 hours under the condition of 300 ~ 400rpm at rotating speed;
Step 4. mixes: get automobile finish and inject high speed dispersor, modified Nano diamond, hyper-dispersant and thinner is added by the synchronous stream of proportioning, after high speed dispersor disperses 2 hours, send into ultrasonic disperser again and disperse 1 hour, wherein dispersion temperature is not higher than 90 DEG C, makes high-wearing feature Nano diamond automobile finish.
2. the preparation method of the automobile finish based on high-wearing feature nano-diamond filler according to claim 1, is characterized in that described acid with strong oxidizing property is selected from dense H
2sO
4, dense HNO
3, HClO
4one or more mixtures.
3. the preparation method of the automobile finish based on high-wearing feature nano-diamond filler according to claim 1, is characterized in that described surface-modifying agent is silane coupling agent or titanate coupling agent.
4. the preparation method of the automobile finish based on high-wearing feature nano-diamond filler according to claim 1, it is characterized in that described color alternation agent is selected from one or more in titanium white, lithopone, cadmium yellow, toluidine red, red iron oxide, phthalocyamine series according to the primary colors of finish paint, must toning extremely former paint solid colour.
5. the preparation method of the automobile finish based on high-wearing feature nano-diamond filler according to claim 1, it is characterized in that described dispersion agent be polyester type, polyether-type, polyacrylate, polyolefins hyper-dispersant one or more.
6. the preparation method of the automobile finish based on high-wearing feature nano-diamond filler according to claim 1, it is characterized in that described proportioning is weight: automobile finish 95 ~ 97 parts, Nano diamond 2 ~ 4 parts, hyper-dispersant 0.5 ~ 1 part, thinner 3 ~ 10 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410442463.3A CN104231712A (en) | 2014-09-02 | 2014-09-02 | Preparation method of automotive topcoat based on nano diamond packing with high wear resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410442463.3A CN104231712A (en) | 2014-09-02 | 2014-09-02 | Preparation method of automotive topcoat based on nano diamond packing with high wear resistance |
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|---|---|
| CN104231712A true CN104231712A (en) | 2014-12-24 |
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108504217A (en) * | 2018-04-18 | 2018-09-07 | 合肥大麦灯箱器材有限公司 | A kind of paint and preparation method thereof being applied to advisement exhibition apparatus surface |
| CN110713820A (en) * | 2019-10-29 | 2020-01-21 | 河南联合精密材料股份有限公司 | Preparation method of hydrophobic modified diamond abrasive |
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|---|---|---|---|---|
| CN1386800A (en) * | 2002-05-22 | 2002-12-25 | 姜荃 | High-adhesion nano surface paint with low covered thickness for high-grade vehicle and its preparing process |
| CN101898761A (en) * | 2010-07-13 | 2010-12-01 | 天津大学 | Method for dispersing detonation method nano-diamond in liquid phase |
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2014
- 2014-09-02 CN CN201410442463.3A patent/CN104231712A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386800A (en) * | 2002-05-22 | 2002-12-25 | 姜荃 | High-adhesion nano surface paint with low covered thickness for high-grade vehicle and its preparing process |
| CN101898761A (en) * | 2010-07-13 | 2010-12-01 | 天津大学 | Method for dispersing detonation method nano-diamond in liquid phase |
Non-Patent Citations (1)
| Title |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108504217A (en) * | 2018-04-18 | 2018-09-07 | 合肥大麦灯箱器材有限公司 | A kind of paint and preparation method thereof being applied to advisement exhibition apparatus surface |
| CN110713820A (en) * | 2019-10-29 | 2020-01-21 | 河南联合精密材料股份有限公司 | Preparation method of hydrophobic modified diamond abrasive |
| CN110713820B (en) * | 2019-10-29 | 2021-02-09 | 河南联合精密材料股份有限公司 | Preparation method of hydrophobic modified diamond abrasive |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Xiaoyang Inventor after: Feng Shuo Inventor after: Ning Dong Inventor after: Feng Guo Inventor after: Tang Weiping Inventor after: Liu Chunli Inventor after: Liu Wei Inventor after: Yang Die Inventor after: Xu Jingyi Inventor after: Zhou Zipeng Inventor after: Li Panshan Inventor after: Su Mingyang Inventor before: Zhao Xiaoyang Inventor before: Tang Weiping Inventor before: Liu Chunli Inventor before: Liu Wei Inventor before: Yang Die Inventor before: Xu Jingyi Inventor before: Zhou Zipeng Inventor before: Li Panshan Inventor before: Su Mingyang |
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Free format text: CORRECT: INVENTOR; FROM: ZHAO XIAOYANG TANG WEIPING LIU CHUNLI LIU WEI YANG YI XU JINGYI ZHOU ZIPENG LI SHANSHAN SU MINGYANG TO: ZHAO XIAOYANG TANG WEIPING LIU CHUNLI LIU WEI YANG YI XU JINGYI ZHOU ZIPENG LI SHANSHAN SU MINGYANG FENG SHUO NING DONG FENG GUO |
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Application publication date: 20141224 |
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| RJ01 | Rejection of invention patent application after publication |