CN103571331B - A kind of Efficient adhesion promoter and preparation method thereof - Google Patents
A kind of Efficient adhesion promoter and preparation method thereof Download PDFInfo
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- CN103571331B CN103571331B CN201310566143.4A CN201310566143A CN103571331B CN 103571331 B CN103571331 B CN 103571331B CN 201310566143 A CN201310566143 A CN 201310566143A CN 103571331 B CN103571331 B CN 103571331B
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Abstract
The invention belongs to paint spraying pre-treatment field, relate to the surface treatment before superalloy application, be specifically related to a kind of Efficient adhesion promoter and preparation method thereof, the polysiloxane 3 ~ 15 parts of band active function groups is dispersed in 60 ~ 80 parts of organic solvents, Efficient adhesion promoter prepared by the present invention improves the sticking power of titanium alloy and high-temperature alloy surface coating, achieving this metalloid utilizes coating to improve ornamental requirement, for paint industry has opened up thinking in noble potential metal finishing direction.
Description
Technical field
The invention belongs to paint spraying pre-treatment field, relate to the surface treatment before superalloy application, be specifically related to a kind of Efficient adhesion promoter.
Background technology
Titanium alloy and superalloy are because intensity is high, solidity to corrosion is good, thermotolerance high is widely used in Aeronautics and Astronautics field, but this metalloid has difficult plating, difficult bonding, the difficult shortcoming be coated with, conventional coating is poor at its surface adhesion force, easily come off, from current documents and materials, do not find this type of metallic surface to apply the data introduction of decorative coating.
Namely Coating Pretreatment carries out the operation of thoroughly cleaning before application to fouling productss such as the oxide skin of workpiece surface, iron rust, grease, dust, to improve bonding strength and the sticking power of coating and metallic surface, thus obtain the product of high-quality, and extend the work-ing life of product.Mechanical grinding is more general simple pre-treating process, it has good cleaning effect to the metal of routine, effectively can remove steel, the oxide skin of the metallic surfaces such as aluminium, improve the roughness in application face for the treatment of simultaneously, thus effectively improve the sticking power of coating on base material, but for the metal that part is harder, independent polishing pre-treatment improves the limited efficiency of sticking power, hardness as its surface of superalloy is higher, polishing is difficult to the roughness improving substrate surface, and superalloy has good inertia, organic coating is very poor at the sticking power on its surface, the epoxypaint being even widely used in adhesives field is also difficult on its surface adhere to.For solving this difficult problem, usually all adopt the chemical treatments that technique is more complicated, this adds production cost undoubtedly, therefore seeks a kind of simple, efficient processing mode, improve coating adhesion, the problem solving high-temperature alloy surface paint film adhesion difference is significant.
Summary of the invention
The object of the present invention is to provide a kind of Efficient adhesion promoter, the polysiloxane of band active function groups has been prepared with organosilane monomer and silane coupling agent, disperseed by organic solvent, provide a kind of adhesion promoter efficiently, to improve the sticking power of epoxy coating at metallic substrate surface particularly high-temperature alloy surface.
A kind of Efficient adhesion promoter, by the polysiloxane dispersion of band active function groups in organic solvent, its quality meter component consists of:
Polysiloxane with active function groups 3 ~ 15 parts
Organic solvent 60 ~ 80 parts
The polysiloxane of described band active function groups is the polysiloxane that organosilane monomer is made by partial hydrolysis polycondensation with the silane coupling agent of band active group, concrete employing organosilane monomer, silane coupling agent, water, hydrofluoric acid and solvent are raw material, wherein organosilane monomer is one or both in methyl silicate and tetraethoxy, silane coupling agent is that solvent is ethanol containing amino silane coupling agent (KH-550) with containing the one in the silane coupling agent (KH-560) of epoxide group; Each raw material is organosilane monomer by mass parts ratio: silane coupling agent: water: hydrofluoric acid: ethanol=30 ~ 60:40 ~ 70:10 ~ 30:0.01 ~ 0.5:50 ~ 90, carry out chemical reaction, reaction product prepares the polysiloxane of above-mentioned band active function groups after purifying.
Described organic solvent is the organic solvent containing alcohols, can be the mixed solvent of independent alcoholic solvent or alcohol and other organic solvents.
The processing step preparing above-mentioned Efficient adhesion promoter is:
(1) raw materials weighing thing organosilane monomer, silane coupling agent and ethanol join in reactor dried in advance in proportion, stir;
(2) appropriate hydrofluoric acid is added in deionized water, adjust ph to 4 ~ 5;
(3) under stirring, the pH value dripped gradually in a kettle. described in step (2) is the deionized water of 4 ~ 5, is added dropwise to complete, and stirs 1 hour post-heating to 60 DEG C, be incubated 3 hours under normal temperature;
(4) be warming up to 130 DEG C and carry out distilation, obtain the polysiloxane of clear product band active function groups.
(5) take the polysiloxane of band active function groups prepared by step (4), organic solvent, namely mixing and stirring obtains Efficient adhesion promoter.
The present invention has prepared by the partial hydrolysis polycondensation reaction of organosilane monomer and silane coupling agent the polysiloxane being with amino or epoxy group(ing), is dispersed in alcoholic solution, makes efficient adhesion promoter.Before carrying out coated metal, promotor is coated on metallic surface, the alkoxyl group in solution contained by polysiloxane and the reaction of moisture in air, hydrolysis forms silicone hydroxyl, and silicone hydroxyl can form hydrogen bonded with the oxide compound of metallic substrate surface; After spraying epoxy primer coating, amino contained by polysiloxane with active function groups or epoxide group, react with the epoxide group in epoxy primer coating or the amino in complete curing agent, form chemical bonding, metal base and epoxy primer are closely linked in bridge joint mode by final promotor, thus significantly improve the sticking power of epoxy primer coating in metallic substrate surface, solve the problem of the organic coating poor adhesive force of high-temperature alloy surface.
In addition the present invention has obtained the polysiloxane with certain polymerization degree by the mode of hydrolytie polycondensation in advance, compare single coupling agent, the rete that the polysiloxane with certain polymkeric substance is formed in metallic surface has higher intensity, and during the polysiloxane of preparation band active function groups, use hydrofluoric acid is catalyzer, containing a small amount of hydrofluoric acid in prepared pretreating reagent, micro etch can be carried out to metallic substrate surface, improve the roughness of metallic surface, thus improve the sticking power of coating on its surface.Compare single mechanical grinding process, or other chemical treatments, use Efficient adhesion promoter of the present invention to carry out coated metal pre-treatment, while raising epoxy coating sticking power, convenient, efficient and environmental protection.
Efficient adhesion promoter prepared by the present invention improves the sticking power of titanium alloy and high-temperature alloy surface coating, achieves this metalloid and utilizes coating to improve ornamental requirement, for paint industry has opened up thinking in noble potential metal finishing direction.
Embodiment
The present invention is further illustrated by the following examples.
Embodiment 1:
(1) organosilane monomer (tetraethoxy) 30 parts, silane coupling agent (KH-550) 40 parts and ethanol 50 parts is weighed.Weighed object is joined in reactor dried in advance, stir;
(2) weigh deionized water 10 parts, add appropriate hydrofluoric acid wherein, adjust ph to 4 ~ 5;
(3) under stirring, the pH value dripped gradually in a kettle. described in step (2) is the deionized water of 4 ~ 5, is added dropwise to complete, and stirs 1 hour post-heating to 60 DEG C, be incubated 3 hours under normal temperature;
(4) be warming up to 130 DEG C and carry out distilation, obtain the polysiloxane of clear product band active function groups;
(5) take the polysiloxane 3 parts of band active function groups prepared by step (4), organic solvent (butanols) 60 parts, namely mixing and stirring obtains Efficient adhesion promoter.
Embodiment 2:
(1) organosilane monomer (methyl silicate) 60 parts, silane coupling agent (KH-550) 70 parts and ethanol 90 parts is weighed.Weighed object is joined in reactor dried in advance, stir;
(2) weigh deionized water 30 parts, add appropriate hydrofluoric acid wherein, adjust ph to 4 ~ 5;
(3) under stirring, the pH value dripped gradually in a kettle. described in step (2) is the deionized water of 4 ~ 5, is added dropwise to complete, and stirs 1 hour post-heating to 60 DEG C, be incubated 3 hours under normal temperature;
(4) be warming up to 130 DEG C and carry out distilation, obtain the polysiloxane of clear product band active function groups;
(5) take the polysiloxane 15 parts of band active function groups prepared by step (4), organic solvent (volume ratio N-BUTYL ACETATE: butanols=6:4) 80 parts, namely mixing and stirring obtains Efficient adhesion promoter.
Embodiment 3:
(1) organosilane monomer (tetraethoxy) 45 parts, silane coupling agent (KH-560) 55 parts and ethanol 70 parts is weighed.Weighed object is joined in reactor dried in advance, stir;
(2) weigh deionized water 20 parts, add appropriate hydrofluoric acid wherein, adjust ph to 4 ~ 5;
(3) under stirring, the pH value dripped gradually in a kettle. described in step (2) is the deionized water of 4 ~ 5, is added dropwise to complete, and stirs 1 hour post-heating to 60 DEG C, be incubated 3 hours under normal temperature;
(4) be warming up to 130 DEG C and carry out distilation, obtain the polysiloxane of clear product band active function groups;
(5) take the polysiloxane 8 parts of band active function groups prepared by step (4), organic solvent (volume ratio N-BUTYL ACETATE: butanols=6:4) 70 parts, namely mixing and stirring obtains Efficient adhesion promoter.
Claims (3)
1. an Efficient adhesion promoter, is characterized in that: by the polysiloxane dispersion of band active function groups in organic solvent, consist of by weight:
Polysiloxane with active function groups 3 ~ 15 parts
Organic solvent 60 ~ 80 parts;
The each raw material of polysiloxane of described band active function groups is by weight:
Organosilane monomer: silane coupling agent: water: hydrofluoric acid: ethanol=30 ~ 60: 40 ~ 70: 10 ~ 30: 0.01 ~ 0.5: 50 ~ 90 carry out chemical reaction, reaction product prepares the polysiloxane of above-mentioned band active function groups after purifying;
Described organosilane monomer is one or both in methyl silicate and tetraethoxy, and described silane coupling agent is containing amino silane resin acceptor kh-550 or the silane coupling agent KH-560 containing epoxide group.
2. Efficient adhesion promoter according to claim 1, is characterized in that: described organic solvent is the mixed solvent of independent alcohol organic solvent or alcohol and other organic solvents.
3. prepare the method for Efficient adhesion promoter as claimed in claim 1, it is characterized in that:
(1) raw materials weighing thing organosilane monomer, silane coupling agent and ethanol join in reactor dried in advance in proportion, stir;
(2) hydrofluoric acid is added in deionized water, adjust ph to 4 ~ 5;
(3) under stirring, the pH value dripped gradually in a kettle. described in step (2) is the deionized water of 4 ~ 5, is added dropwise to complete, and stirs 1 hour post-heating to 60 DEG C, be incubated 3 hours under normal temperature;
(4) be warming up to 130 DEG C and carry out distilation, obtain the polysiloxane of clear product band active function groups;
(5) take the polysiloxane of band active function groups prepared by step (4), add organic solvent, namely mixing and stirring obtains Efficient adhesion promoter.
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| CN103571331B true CN103571331B (en) | 2016-02-10 |
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| CN105219258B (en) * | 2015-10-16 | 2018-02-06 | 李文超 | A kind of anti-oxidation High Radiant Rate Coating of high temperature resistant and its application method |
| CN108192356B (en) * | 2017-12-31 | 2021-01-12 | 广州硅碳新材料有限公司 | Carrier type organic silicon adhesion promoter and preparation method thereof |
| CN111117478A (en) * | 2019-12-09 | 2020-05-08 | 华南农业大学 | UV composite coating for digital jet printing on surface of wood substrate and preparation method and application thereof |
| CN111777890A (en) * | 2020-07-15 | 2020-10-16 | 武汉材料保护研究所有限公司 | High-temperature-resistant coating adhesion promoter for titanium alloy and preparation method thereof |
| CN112705441A (en) * | 2020-12-09 | 2021-04-27 | 兰州空间技术物理研究所 | Metal bonding MoS2Epoxy bonding MoS2Composite lubricating coating |
| CN112760033A (en) * | 2020-12-25 | 2021-05-07 | 广东电网有限责任公司电力科学研究院 | Low-surface-energy organic silicon protective coating and preparation method thereof |
| CN113930203B (en) * | 2021-10-15 | 2023-08-08 | 广东电网有限责任公司 | Adhesive with high barrier property, preparation method and application thereof in composite insulator |
| CN114032486B (en) * | 2021-11-11 | 2023-07-28 | 北京星航机电装备有限公司 | Composite structure thermal protection coating and preparation method thereof |
| CN115491075A (en) * | 2022-10-20 | 2022-12-20 | 衡阳拓创聚合新材料有限公司 | Universal efficient adhesion promoter and preparation method thereof |
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| CN1712478A (en) * | 2004-06-14 | 2005-12-28 | 中国科学院过程工程研究所 | Nanometer multifunctional composite thin-membrane, its production and use |
| CN101273102A (en) * | 2005-09-09 | 2008-09-24 | 辛辛那提大学 | Method of applying silane coating to metal composition |
| CN102676026A (en) * | 2012-06-02 | 2012-09-19 | 湖南中汉高分子材料科技有限公司 | Super-adhesion high-anti-corroding epoxy iron red primer |
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| JP4973877B2 (en) * | 2008-09-17 | 2012-07-11 | 信越化学工業株式会社 | Metal surface treatment agent, surface-treated steel material and method for treating the same, painted steel material and method for producing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1712478A (en) * | 2004-06-14 | 2005-12-28 | 中国科学院过程工程研究所 | Nanometer multifunctional composite thin-membrane, its production and use |
| CN101273102A (en) * | 2005-09-09 | 2008-09-24 | 辛辛那提大学 | Method of applying silane coating to metal composition |
| CN102676026A (en) * | 2012-06-02 | 2012-09-19 | 湖南中汉高分子材料科技有限公司 | Super-adhesion high-anti-corroding epoxy iron red primer |
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