CN101319104B - Composite suspending agent of alcohol-based dry powder coating, preparation method of composite suspending agent and prepared coating - Google Patents

Composite suspending agent of alcohol-based dry powder coating, preparation method of composite suspending agent and prepared coating Download PDF

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Publication number
CN101319104B
CN101319104B CN2008101153507A CN200810115350A CN101319104B CN 101319104 B CN101319104 B CN 101319104B CN 2008101153507 A CN2008101153507 A CN 2008101153507A CN 200810115350 A CN200810115350 A CN 200810115350A CN 101319104 B CN101319104 B CN 101319104B
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Prior art keywords
coating
suspension agent
dry powder
suspending agent
composite
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Expired - Fee Related
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CN2008101153507A
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CN101319104A (en
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张增志
杜红梅
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China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology Beijing CUMTB
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Abstract

The embodiment of the invention discloses a composite suspending agent of an alcohol-based dry powder coating, a preparation method thereof and the prepared coating, wherein the suspending agent comprises the following components in percentage by weight: 0.2 to 5 parts of organic bentonite, 0.1 to 2.5 parts of high-substituted hydroxypropyl cellulose HPC, 0.01 to 1.5 parts of nonionic surfactant and 0.01 to 1 part of anionic surfactant. The composite suspending agent is prepared by mixing organic bentonite (organoclay) with high-substituted hydroxypropyl cellulose (HPC), when the coating is prepared, the organic bentonite (organoclay) can be dispersed into a spatial reticular colloidal solution after encountering ethanol, so that the solution has better thixotropy, shows stronger supporting and sinking-preventing effects on a base material, and is particularly outstanding when being mixed with the HPC. Meanwhile, because the outer surface of the oxide particles has positive electrical polarity, in order to improve the wettability and the dispersibility of the surfactant, a small amount of anionic surfactant is adopted and simultaneously the nonionic surfactant is added, so that the dispersion and floatation functions of the particles are ensured.

Description

The coating of composite suspension agent of a kind of alcohol based dry powder paint and preparation method thereof and preparation
Technical field
The present invention relates to a kind of suspension agent technology that is used in the coating, composite suspension agent that relates in particular to a kind of alcohol based dry powder paint and preparation method thereof reaches the coating of preparation.
Background technology
Employing is with the slurry coating of dimethylbenzene, toluene equal solvent mostly with cast paint for tradition, and these coating are inflammable in transportation, especially in use can cause serious atmospheric pollution and personal infringement, not environmental protection of the utmost point.In recent years, people begin to prepare alcohol based dry powder paint, this coating be in implementation process with being painted on mo(U)ld face behind the spirituous solution dilution dry powder paint, natural air drying film forming or light film forming then.But the suspensions in alcohol such as the aggregate-oxide compound in the dry powder paint, graphite are bad, so be very easy to precipitation in the construction process at the scene, bring adverse influence to production.The present invention studies the suspension property of aggregate in alcohol such as how improving oxide compound, graphite on the basis of this present situation.
Summary of the invention
Embodiment of the present invention provides the coating of composite suspension agent of a kind of alcohol based dry powder paint and preparation method thereof and preparation, by dose activeconstituents in organic clay, improves the suspension effect of aggregate in pure sill.
The objective of the invention is to be achieved through the following technical solutions:
Embodiment of the present invention provides a kind of composite suspension agent of alcohol based dry powder paint, and this suspension agent is by weight being made up of following each component:
Organobentonite 0.2~5, Hydroxypropylcelliloxe 0.1~2.5, nonionogenic tenside 0.01~1.5, anion surfactant 0.01~1.
Described nonionogenic tenside adopts any in peregal series, class of department class, the Tweens.
Described anion surfactant adopts any in Sodium dodecylbenzene sulfonate, sodium laurylsulfonate, sodium lauryl sulphate, the calcium dodecylbenzene sulphonate.
Embodiment of the present invention provides a kind of preparation method of composite suspension agent of alcohol based dry powder paint, proportioning according to above-mentioned suspension agent described in each is got each feed composition, with each feed composition stir in order, mixed grind, ball milling or colloidal mill processing, each component thorough mixing is uniformly dispersed, promptly obtains preparing the composite suspension agent that alcohol based dry powder paint is used.
Embodiment of the present invention also provides a kind of coating based on the preparation of above-mentioned suspension agent, and this coating is 100% to comprise by gross weight:
Account for 0.32~10% above-mentioned composite suspension agent described in each of coating gross weight, 1.56~19% film forming recombiner, the remainder that account for the coating gross weight are base-material, composite suspension agent is mixed with the film forming recombiner, again with the composite casting dry powder paint that obtains of base-material; Wherein, described film forming recombiner is by the following weight ratio: resol 0.5~8, urotropine 1~10 and polyvinyl butyral acetal 0.01~1 mix.
Described base-material is a granulated aggregate, specifically comprises: any in zirconium English powder or the graphite.
The consumption of described base-material is preferably and accounts for 82~88% of described coating gross weight.
The technical scheme that is provided by the invention described above embodiment as can be seen, embodiment of the present invention is by organobentonite (organic clay) and be equipped with Hydroxypropylcelliloxe, when preparation coating, organobentonite (organic clay) can be dispersed into the netted colloidal solution in space after running into ethanol, make this solution have thixotropy preferably, base-material is shown stronger support and stops the sinking effect, and when being equipped with Hydroxypropylcelliloxe, this effect is just particularly outstanding.Because the oxide particle outside surface is positive electricity polarity,, when adopting a small amount of anion surfactant, be equipped with nonionogenic tenside simultaneously, thereby guaranteed particulate is disperseed the supporting effect for wetting property and the dispersiveness that improves tensio-active agent.
Embodiment
Embodiment of the present invention provides the coating of composite suspension agent of a kind of alcohol based dry powder paint and preparation method thereof and preparation, and this suspension agent is by weight specifically comprising: organobentonite 0.2~5, Hydroxypropylcelliloxe 0.1~2.5, nonionogenic tenside 0.01~1.5 and anion surfactant 0.01~1.With each component of this suspension agent stir in order, mixed grind, ball milling or colloidal mill processing, its each composition thorough mixing is uniformly dispersed, promptly can be made into the composite suspension agent of alcohol based dry powder paint.This suspension agent cooperates with Hydroxypropylcelliloxe by organobentonite, can improve the suspension property of base-material alcohol from two aspects: be the density that improves compound alcohol liquid on the one hand; Be to utilize tensio-active agent to improve the dispersion suspension ability of aggregate in solvent on the other hand, wherein, the method that improves compound alcohol liquid density is to add organic clay and be equipped with Hydroxypropylcelliloxe in alcohol, organobentonite (organic clay) can be dispersed into the netted colloidal solution in space after running into ethanol, make this solution have thixotropy preferably, base-material is shown stronger support and stops the sinking effect, when being equipped with Hydroxypropylcelliloxe, this effect is just particularly outstanding.Because the oxide particle outside surface is positive electricity polarity,, when adopting a small amount of anion surfactant, be equipped with nonionogenic tenside simultaneously, thereby guaranteed particulate is disperseed the supporting effect for wetting property and the dispersiveness that improves tensio-active agent.
For ease of understanding, embodiment of the present invention is described further below in conjunction with specific embodiment.
Embodiment one
Present embodiment provides a kind of composite suspension agent of alcohol based dry powder paint, is mainly used in the coating, improves the suspension property of base-material in alcohol, and this composite suspension agent is by weight specifically comprising:
Organobentonite 0.2~5, Hydroxypropylcelliloxe 0.1~2.5, nonionogenic tenside 0.01~1.5, anion surfactant 0.01~1, with each feed composition stir in order, mixed grind, ball milling or colloidal mill processing, each component thorough mixing is uniformly dispersed, promptly obtains preparing the composite suspension agent that alcohol based dry powder paint is used.
Wherein, nonionogenic tenside can adopt any in peregal series, class of department class, the Tweens etc.; Anion surfactant can adopt any in Sodium dodecylbenzene sulfonate, sodium laurylsulfonate, sodium lauryl sulphate, the calcium dodecylbenzene sulphonate etc.
When preparing coating with above-mentioned composite suspension agent, this coating is 100% to comprise by gross weight: above-mentioned composite suspension agent, film forming recombiner and as the granulated aggregate of base-material, wherein, the consumption of composite suspension agent accounts for 0.32~10% of coating gross weight, the film forming recombiner account for the coating gross weight 1.56~19%, rest parts is for (general consumption is to account for coating by 71~98.12% of gross weight as the granulated aggregate of base-material, consumption is 82~88% in order), composite suspension agent is mixed with the film forming recombiner, again with the composite casting dry powder paint that obtains of base-material; Wherein, described film forming recombiner is by the following weight ratio: resol 0.5~8, urotropine 1~10 and polyvinyl butyral acetal 0.01~1 mix.Described granulated aggregate as base-material specifically comprises: any in zirconium English powder or the graphite.
The above-mentioned dry powder paint that obtains added to use after an amount of ethanol dilutes.
More a lot of greatly than sodium bentonite and lithium bentonite in the present embodiment owing to the swell value of organobentonite in organic solvent, thereby can reach the suspension effect of understanding as the component of suspension agent with it, used tensio-active agent can also use as dispersion agent, flow agent when the suspension to coating makes a significant contribution in the recombiner, binding agent (generally selecting resin material for use) in they and the coating and membrane-forming agent etc. are mixed together, and can make the overall performance of coating obtain improving greatly and improving.
Embodiment two
Present embodiment provides a kind of composite suspension agent of alcohol based dry powder paint, and this composite suspension agent is by weight specifically comprising:
Organobentonite 0.5, Hydroxypropylcelliloxe 1, peregal 0.08, Sodium dodecylbenzene sulfonate 0.05, with each feed composition stir in order, mixed grind, ball milling or colloidal mill processing, each component thorough mixing is uniformly dispersed, can obtains preparing the composite suspension agent that alcohol based dry powder paint is used.
Embodiment three
Present embodiment provides a kind of composite suspension agent of alcohol based dry powder paint, and this composite suspension agent is by weight specifically comprising:
Organobentonite 1.5, Hydroxypropylcelliloxe 1.5, class of department class 0.05, sodium lauryl sulphate 0.08, with each feed composition stir in order, mixed grind, ball milling or colloidal mill processing, each component thorough mixing is uniformly dispersed, can obtains preparing the composite suspension agent that alcohol based dry powder paint is used.
Embodiment four
Present embodiment provides a kind of composite suspension agent of alcohol based dry powder paint, this composite suspension agent is by weight specifically comprising: organobentonite 2, Hydroxypropylcelliloxe 2.5, Tweens 0.08, calcium dodecylbenzene sulphonate 0.03, with each feed composition stir in order, mixed grind, ball milling or colloidal mill processing, each component thorough mixing is uniformly dispersed, can obtains preparing the composite suspension agent that alcohol based dry powder paint is used.
Embodiment five
Present embodiment provides a kind of coating based on above-mentioned composite suspension agent preparation, the dry powder paint of using mainly as cast steel, this coating specifically comprises: composite suspension agent, film forming recombiner and as the granulated aggregate of base-material, in the gross weight 100% of coating, the per-cent that each raw material accounts for the coating gross weight is respectively:
Organobentonite (organic clay) 2%, Hydroxypropylcelliloxe 1%, tween 1%, sodium lauryl sulphate 0.7%, resol 5%, polyvinyl butyral acetal 0.3%, urotropine 6%, zirconium English powder 84% will promptly obtain the dry powder paint that cast steel is used after each raw material mixing.
Embodiment six
Present embodiment provides a kind of coating based on above-mentioned composite suspension agent preparation, and mainly as the dry powder paint that is used for cast iron, its concrete weight proportion is:
Organic clay 1%, Hydroxypropylcelliloxe 0.2%, peregal 1%, calcium dodecylbenzene sulphonate 0.5%, resol 6%, polyvinyl butyral acetal 0.01%, urotropine 6%, graphite 85.29% will promptly obtain the dry powder paint that cast iron is used after each raw material mixing.
After the above-mentioned coating test for preparing based on composite suspension agent, its specific performance is as follows:
Use the performance table of the coating that this suspension agent is prepared into
Gas forming amount (mL/g) Suspensibility (8h) Levelling property Splitting resistance (1500 ℃) Film-forming properties
<3 >96.0 <10min Flawless Any surface finish densification, smooth non-scale
Wherein: what the mensuration of suspensibility adopted is the relative precipitator method of graduated cylinder (JBT5107-91); What the mensuration of levelling property adopted is the measuring method of the levelling property of regulation in the national standard (JB6750-79 (88) paint flow levelling assay method).Can draw the coating that uses the embodiment of the invention to do the suspension agent preparation by last table and have following characteristics:
(1) suspension stability is good, and long-time storage is placed and do not lumpd, and does not harden, and easily stirs, and the redispersion performance is good;
(2) good thixotropy is arranged, during coating drying (oven dry or dried certainly), non-scale does not ftracture, and cast(ing) surface is highly polished, and film forming properties is good;
(3) coating adhesive strength height have good covering power, and gas forming amount is low;
(4) utilize each composition resource distribution of coating of suspension agent preparation of the embodiment of the invention extensive, preparation technology is simple, is easy to site operation, has good and economic.
In sum, the suspension agent in the embodiment of the invention, this suspension agent can improve the suspension property of base-material alcohol from two aspects: be the density that improves compound alcohol liquid on the one hand; Be to utilize tensio-active agent to improve the dispersion suspension ability of aggregate in solvent on the other hand.Wherein, the method that improves compound alcohol liquid density is to add organobentonite (organic clay) and be equipped with Hydroxypropylcelliloxe in alcohol, after running into ethanol, organic wilkinite (organic clay) can be dispersed into the netted colloidal solution in space, make this solution have thixotropy preferably, base-material is shown stronger support and stops the sinking effect, when being equipped with Hydroxypropylcelliloxe, this effect is just particularly outstanding.Because the oxide particle outside surface is positive electricity polarity,, when adopting a small amount of anion surfactant, be equipped with nonionogenic tenside simultaneously, thereby guaranteed particulate is disperseed the supporting effect for wetting property and the dispersiveness that improves tensio-active agent.
The above; only be the preferable specific embodiment of the present invention; succession relation between each embodiment does not cause any restriction to the present invention; protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.

Claims (7)

1. the composite suspension agent of an alcohol based dry powder paint is characterized in that, this suspension agent is by weight being made up of following each component:
Organobentonite 0.2~5, Hydroxypropylcelliloxe 0.1~2.5, nonionogenic tenside 0.01~1.5, anion surfactant 0.01~1.
2. suspension agent according to claim 1 is characterized in that, described nonionogenic tenside adopts any in peregal series, class of department class, the Tweens.
3. suspension agent according to claim 1 is characterized in that, described anion surfactant adopts any in Sodium dodecylbenzene sulfonate, sodium laurylsulfonate, sodium lauryl sulphate, the calcium dodecylbenzene sulphonate.
4. the preparation method of the composite suspension agent of an alcohol based dry powder paint, it is characterized in that, get each feed composition according to the proportioning of each described suspension agent in the claim 1~3, with each feed composition stir in order, mixed grind, ball milling or colloidal mill processing, each component thorough mixing is uniformly dispersed, promptly obtains preparing the composite suspension agent that alcohol based dry powder paint is used.
5. the coating based on the preparation of above-mentioned suspension agent is characterized in that, this coating is 100% to comprise by gross weight:
0.32~10% the aforesaid right that accounts for the coating gross weight requires each described composite suspension agent in 1~3, and 1.56~19% film forming recombiner, the remainder that account for the coating gross weight are base-material; Wherein, described film forming recombiner is by the following weight ratio: resol 0.5~8, urotropine 1~10 and polyvinyl butyral acetal 0.01~1 mix.
6. coating according to claim 5 is characterized in that, described base-material is a granulated aggregate, specifically comprises: any in zirconium English powder or the graphite.
7. according to claim 5 or 6 described coating, it is characterized in that the consumption of described base-material is preferably and accounts for 82~88% of described coating gross weight.
CN2008101153507A 2008-06-20 2008-06-20 Composite suspending agent of alcohol-based dry powder coating, preparation method of composite suspending agent and prepared coating Expired - Fee Related CN101319104B (en)

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CN1061423A (en) * 1990-11-14 1992-05-27 高化民 Process for preparation of dry powder of alcoholic paint
US6306933B1 (en) * 1999-03-30 2001-10-23 Union Carbide Chemicals & Plastics Technology Corporation Cellulose ether slurries
CN1566295A (en) * 2003-06-30 2005-01-19 中国石油化工股份有限公司 Process for producing water based lubricating liquid

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1061423A (en) * 1990-11-14 1992-05-27 高化民 Process for preparation of dry powder of alcoholic paint
US6306933B1 (en) * 1999-03-30 2001-10-23 Union Carbide Chemicals & Plastics Technology Corporation Cellulose ether slurries
CN1566295A (en) * 2003-06-30 2005-01-19 中国石油化工股份有限公司 Process for producing water based lubricating liquid

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