CN102070973B - Primer-topcoat paint for automobile parts - Google Patents
Primer-topcoat paint for automobile parts Download PDFInfo
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- CN102070973B CN102070973B CN 201110000938 CN201110000938A CN102070973B CN 102070973 B CN102070973 B CN 102070973B CN 201110000938 CN201110000938 CN 201110000938 CN 201110000938 A CN201110000938 A CN 201110000938A CN 102070973 B CN102070973 B CN 102070973B
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- primer
- agent
- topcoat paint
- automobile parts
- epoxy
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Abstract
The invention relates to primer-topcoat paint for automobile parts. The primer-topcoat paint consists of a main coating agent component A and a curing agent component B, wherein the main coating agent component consists of base resin, a pigment filler, a solvent and an aid; the base resin consists of epoxy resin 634-80 and epoxy resin 601-75 in the weight ratio of 20-35:10-19; and the base resin accounts for 30 to 54 percent of the weight of the main coating agent. The primer-topcoat paint has high adhesion, high mechanical strength, high corrosion resistance, high medicament resistance, high acid rain resistance, high pollution resistance and high moisture resistance. A coating is free from foaming, color change and distortion under a high-temperature and high-humidity climate condition, has high construction performance and high production line overcoatability.
Description
Technical field
The present invention relates to a kind of coating, especially a kind of primer-topcoat paint for automobile parts.
Background technology
The development of advancing by leaps and bounds along with the domestic automobile industry, the automobile component lacquer that is used for improving automobile component stain resistance and salt fog resistance also obtains energetically research and development and the manufacturing of vast coating producer accordingly, although existing automobile component lacquer salt spray resistance is well improved, but because automobile component lacquer consumption is huge, energy is extremely inconvenient so the words that adopt traditional priming paint and finish paint separately to brush are lost time, and existing primer-topcoat paint for automobile parts is because the not mature enough or raw material improper use of technique often makes its salt spray resistance, anti-pollution, shock-resistant, the performances such as snappiness can not reach optimum regime.
Summary of the invention
Use inconvenient in order to solve existing automobile component lacquer, the dissatisfactory problems of performance such as salt spray resistance, anti-pollution, shock resistance, snappiness, the invention provides a kind of easy to use, strong adhesion, primer-topcoat paint for automobile parts that salt spray resistance, anti-pollution and shock resistance are good and preparation method thereof.
Technical scheme of the present invention is: a kind of primer-topcoat paint for automobile parts, formed by coating host A component and solidifying agent B component, described coating host is comprised of binder resin, color stuffing, solvent and auxiliary agent, described binder resin is comprised of Resins, epoxy 634-80 and Resins, epoxy 601-75, the weight ratio of Resins, epoxy 634-80 and Resins, epoxy 601-75 is 20-35:10-19, and binder resin accounts for the 30-54% of coating host weight.
Adopting Resins, epoxy 634-80 is main film forming substance, be low because of its molecular weight, oxirane value is higher, and is large and so that its antiseptic property is excellent with amine curing agent curing cross-linked density; In host, add an amount of in the Resins, epoxy 601-75 of high molecular can improve its snappiness, simultaneously in the high molecular weight resin fusing point high, solvent evaporates is fast, surface drying is fast, is conducive to film prevent sagging.
Preferably, by the content meter in coating host, described color stuffing comprises the component of following mass percent:
Carbon black 3-4%;
Aluminium triphosphate 10-12%;
Barium sulfate 10-15%;
Mica powder 5-8%;
Talcum powder 5--8%.
Aluminium triphosphate is a kind of non-toxic and non-pollution rust-stabilising pigment, do not contain chromium in the chemical structure, every, the poisonous and harmful heavy metallic such as plumbous, avoided the Heavy Metal Pollution of red lead, zinc-chrome yellow, calcium plumbite class rust-stabilising pigment, skin, eyes there is not pungency yet, its toxicity test LD50 (RAT) 〉=5g/Kg.Safe and reliable in the use procedure of coating, meet the international trend of present strengthen environmental protection.
Aluminium triphosphate has extremely strong rust-proof effect.The aluminium triphosphate rust-stabilising pigment can dissociate the tripolyphosphate radical ion in coating, reaction formula is: AlH
2P
3O
10→ P
3O
10 5-+ Al
3++ 2H
+Structural formula by aluminium triphosphate can find out, the aluminium triphosphate radical ion that it dissociates also has 5 active " O-" to intersect chelating with metallic cation, has the ability that metal ion is caught in extremely strong pouncing on, and forms than phosphatizing treatment PO
4 3-The ion passivating metallic surfaces plays the antirust effect of chemistry, then slowly is being decomposed into fine and close ortho-phosphoric acid epithelium, isolated moisture, and oxygen etc. contact with the metallic surface, have played isolated antirust effect.Therefore it has the antirust and isolated antirust double effects of chemistry, in addition, also has the performances such as sticking power, the snappiness of improving paint film, shock resistance and Anti-bubble that strengthen paint film.
Because toughness and the good springiness of mica powder, the slip ability is large, ultimate compression strength is high, can do good elastic filler, and stable chemical performance, soda acid is difficult to and its effect, alkaline-resisting, the anticorrosion loss of energy, therefore adding an amount of mica powder forms laminate structure in coating, is the permeation pathway that has postponed water and ion greatly, can improve the anticorrosion anti-permeability performance of coating.And can promote snappiness, improve alkali resistance, increase surface strength.
Preferably, by the content meter in coating host, described auxiliary agent comprises the component of following mass percent:
Defoamer 0.2--0.5%;
Flow agent 0.2--0.5%;
Coupling agent 0.3--0.5%;
The effect of coupling agent is the cohesive force that can increase between coating and inorganic ground, also can be for the treatment of used pigment, filler in these materials, itself and resin binder are combined closely, strengthened the mechanical and physical performance of coating and under high wet environment with the sticking power of ground, effect highly significant; The flow agent effect is the levelling property that improves coating.
Preferably, described coupling agent adopts γ aminopropyltriethoxy silane.
The molecular formula H of γ aminopropyltriethoxy silane
2NCH
2CH
2CH
2Si (OC
2H
5)
3Because monomer whose has two kinds of different active functional group groups in a part, can the material that dissimilar chemical structures and avidity differ greatly be coupled together between the interface, play " bridge " equally stable ligation, it can increase the cohesive force between coating and inorganic ground, also can be for the treatment of used pigment, filler in these materials, itself and resin binder are combined closely, strengthened the mechanical and physical performance of coating and under high wet environment with the sticking power of ground, effect highly significant.
The mechanism of action of coupling agent of the present invention is:
Preferably, described solidifying agent comprises polymeric amide 2115 and 3007 solidifying agent, and by the content meter in solidifying agent, the mass percent of polymeric amide 2115 is 25-30%, and the mass percent of 3007 solidifying agent is 35-45%, and the solidifying agent surplus is mixed solvent.
Preferably, described solvent adopts diacetone alcohol.
Because the general levelling property of epoxypaint is poor, turn paint film after the construction and produce easily the disadvantages such as tangerine peel, cissing, therefore adopt the method that adds diacetone alcohol high boiling point strong solvent to increase the levelling property of resin, add simultaneously an amount of 582 resins, improve levelling property, prevent the disadvantages such as cissing, also add an amount of leveling auxiliary agent, mutually combining by the three, is that coating has good painting effect.
Preferably, described solidifying agent comprises polymeric amide 2115 and 3007 solidifying agent, and by the content meter in solidifying agent, the mass percent of polymeric amide 2115 is 25-30%, and the mass percent of 3007 solidifying agent is 35-45%.
3007 solidifying agent are Manny phase modification virtue fat ammonia, belonging to phenol aldehyde modified amine low-temperature curing mainly is the katalysis that depends on the phenolic hydroxyl group in the molecular structure, strengthened the activity of curing reaction, that solidifying agent has low temperature, the characteristics of moisturecuring agent, it is fast that virtue fat amine has possessed speed of response, nontoxic, the advantage such as harmless, and the advantage good with the Resins, epoxy compatibility, but snappiness is relatively poor, and 2115 polyamide curing agents are the low-molecular-weight polyamide resins that formed by the dimer of the saturated fatty acid of vegetables oil or tripolymer and polyamine polycondensation, owing to contain long carbochain and polar group in the polyamide resin molecular structure, thereby has elasticity and sticking power, also be a kind of good endurable active toughener, so that epoxypaint keeps toughness for a long time.Therefore select both to combine, make coating have good curing performance, and make to film and have excellent mechanical property and corrosion resistance nature.
The present invention also provides a kind of preparation method of primer-topcoat paint for automobile parts, the steps include:
1) Resins, epoxy 634-80 and epoxy 601-75 resin are joined pill tank;
2) be ground to below the 35um after adding dispersion agent, anti-settling agent, color stuffing etc. stir;
3) then add the paints such as auxiliary agent, solvent and make coating host;
4) polymeric amide 2115 is joined in the mixed solvent, be dissolved as transparent liquid, add 3007 solidifying agent again, stirring makes solidifying agent;
5) at last coating host and solidifying agent are mixed, make primer-topcoat paint for automobile parts.
Beneficial effect of the present invention is: the present invention has excellent sticking power, good physical strength and erosion resistance, good drug resistance, acid rain resistant, stain resistance, has good moisture resistance, the non-foaming nondiscoloration of coating, undistorted under the high-temperature high humidity climate condition, the streamline matching capacity is good when having good workability.
Embodiment
Below by embodiment the present invention is made specific description, but protection scope of the present invention is not limited to this.
Embodiment 1
A kind of primer-topcoat paint for automobile parts, formed by coating host A component and solidifying agent B component, described coating host is comprised of binder resin, color stuffing, solvent and auxiliary agent, and by the content meter in coating host, the mass percent of each component is in the coating host:
Resins, epoxy 634-80 32%;
Resins, epoxy 601-75 16%;
582 resins 1.5%;
Dispersion agent 1.0%;
Carbon black 3%;
Aluminium triphosphate 10%;
Barium sulfate 12%;
Mica powder 7%;
Talcum powder 7%;
Defoamer 0.4%;
Flow agent 0.4%;
Coupling agent KH550 0.5%;
Anti-settling agent 1.2%;
Diacetone alcohol 8%.
By content meter in solidifying agent, the mass percent of each component is in the solidifying agent:
Polymeric amide 2,115 25%;
3007 solidifying agent 45%;
Mixed solvent 30%;
Described primer-topcoat paint for automobile parts prepares in the steps below:
1) Resins, epoxy 634-80 and epoxy 601-75 resin are joined pill tank;
2) be ground to below the 35um after adding dispersion agent, anti-settling agent, color stuffing etc. stir;
3) then add the paints such as auxiliary agent, solvent and make coating host;
4) by prescription polymeric amide 2115 is joined in the mixed solvent, be dissolved as transparent liquid, add 3007 solidifying agent again, stirring makes solidifying agent;
5) at last coating host and solidifying agent are mixed, make primer-topcoat paint for automobile parts.
In the coating component selection and content thereof all be to spend the constantly result that draws of test of creative work by the applicant:
The measuring mechanical property data of Resins, epoxy 634-80 and Resins, epoxy 601-75 film-forming see Table 1, table 2:
The mechanical property of table 1634-80 resin solidification film forming
The mechanical property of table 2601-75 resin solidification film forming
The data that the add-on of rust-stabilising pigment aluminium triphosphate changes the impact of coating rust-proof effect see Table 3:
Table 3 aluminium triphosphate different amounts is on the impact of rust-proof effect
Draw according to above experimental data, when the add-on of aluminium triphosphate just can reach standard-required in 10%--12%.
Coating color stuffing mica powder add-on sees Table 4 to paint coatings performance impact data:
Table 4 mica powder add-on is on the impact of coating performance
The usage quantity of coupling agent KH550 affects data to the dope layer salt fog and sees Table 5:
Table 5KH550 usage quantity is on the impact of the salt fog resistance of coating
Bottom surface unification trolley part lacquer performance index of the present invention are as shown in table 6 below:
Table 6 bottom surface unification trolley part lacquer performance
Claims (6)
1. primer-topcoat paint for automobile parts, formed by coating host A component and solidifying agent B component, described coating host is comprised of binder resin, color stuffing, solvent and auxiliary agent, it is characterized in that: described binder resin is comprised of Resins, epoxy 634-80 and Resins, epoxy 601-75, the weight ratio of Resins, epoxy 634-80 and Resins, epoxy 601-75 is 20-35:10-19, binder resin accounts for the 30-54% of coating host weight, and wherein, color stuffing comprises the component of following mass percent:
Carbon black 3-4%;
Aluminium triphosphate 10-12%;
Barium sulfate 10-15%;
Mica powder 5-8%;
Talcum powder 5--8%.
2. primer-topcoat paint for automobile parts according to claim 1 is characterized in that: by the content meter in coating host, described auxiliary agent comprises the component of following mass percent:
Defoamer 0.2--0.5%;
Flow agent 0.2--0.5%;
Coupling agent 0.3--0.5%;
582 resin 1-2%.
3. primer-topcoat paint for automobile parts according to claim 2 is characterized in that: described coupling agent employing γ aminopropyltriethoxy silane.
4. primer-topcoat paint for automobile parts according to claim 1, it is characterized in that: described solidifying agent comprises polymeric amide 2115 and 3007 solidifying agent, by the content meter in solidifying agent, the mass percent of polymeric amide 2115 is 25-30%, the mass percent of 3007 solidifying agent is 35-45%, and the solidifying agent surplus is mixed solvent.
5. primer-topcoat paint for automobile parts according to claim 1, it is characterized in that: described coating host is comprised of the component of following mass percent:
Resins, epoxy 634-80 20-35%;
Resins, epoxy 601-75 10-19%;
582 resin 1-2%;
Dispersion agent 0.5-1%;
Carbon black 3-4%;
Aluminium triphosphate 10-12%;
Barium sulfate 10-15%;
Mica powder 5-8%;
Talcum powder 5--8%;
Defoamer 0.2--0.5%;
Flow agent 0.2--0.5%;
Coupling agent KH550 0.3--0.5%;
Anti-settling agent 0.5-1.5%;
Solvent 5-10%.
6. primer-topcoat paint for automobile parts according to claim 5 is characterized in that: described solvent employing diacetone alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110000938 CN102070973B (en) | 2011-01-06 | 2011-01-06 | Primer-topcoat paint for automobile parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110000938 CN102070973B (en) | 2011-01-06 | 2011-01-06 | Primer-topcoat paint for automobile parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102070973A CN102070973A (en) | 2011-05-25 |
| CN102070973B true CN102070973B (en) | 2013-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110000938 Active CN102070973B (en) | 2011-01-06 | 2011-01-06 | Primer-topcoat paint for automobile parts |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277055B (en) * | 2011-07-25 | 2014-04-16 | 东来涂料技术（上海）有限公司 | High-solid volume, single-coating and high-lustre black plastic paint and preparation method thereof |
| CN102702919B (en) * | 2012-06-11 | 2014-09-10 | 江苏兰陵高分子材料有限公司 | Wear resistant epoxy resin primer-topcoat coating with high solid content and low toxicity |
| CN105623464A (en) * | 2014-11-11 | 2016-06-01 | 泰州市金鹰精密铸造有限公司 | Protection paint for metal fasteners |
| CN105111894B (en) * | 2015-08-19 | 2018-05-11 | 江苏科技大学 | A kind of composition of the thick ceramic corrosion-resistant abrasion coating of slurry film forming and preparation method thereof |
| CN108610882A (en) * | 2016-12-15 | 2018-10-02 | 惠州市富林化工有限公司 | A kind of waterproof glass coating |
| CN113637392A (en) * | 2021-09-13 | 2021-11-12 | 湖南工业大学 | Flow coating epoxy primer and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069992A (en) * | 1992-05-30 | 1993-03-17 | 郭新民 | Ionizing radiation protective agent |
| CN1164557A (en) * | 1997-03-11 | 1997-11-12 | 连云港港务局 | Two-component middle layer anticorrosive paint based on epoxy resin and its preparing method |
| CN1164556A (en) * | 1997-03-11 | 1997-11-12 | 连云港港务局 | Two-component surface layer anticorrosive paint based on epoxy resin and its preparing method |
-
2011
- 2011-01-06 CN CN 201110000938 patent/CN102070973B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069992A (en) * | 1992-05-30 | 1993-03-17 | 郭新民 | Ionizing radiation protective agent |
| CN1164557A (en) * | 1997-03-11 | 1997-11-12 | 连云港港务局 | Two-component middle layer anticorrosive paint based on epoxy resin and its preparing method |
| CN1164556A (en) * | 1997-03-11 | 1997-11-12 | 连云港港务局 | Two-component surface layer anticorrosive paint based on epoxy resin and its preparing method |
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| CN102070973A (en) | 2011-05-25 |
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Address after: 313201 No. 3 Hedong Road, Deqing County New Town Industrial Park, Zhejiang, Huzhou Patentee after: Zhejiang bridge paint Co., Ltd. Address before: Hangzhou City, Zhejiang province 310011 Gongshu District Dengyun Road No. 555 Patentee before: Hangzhou Paint Co., Ltd. |