CN103436128A - Double-component silicone acrylic emulsion mildew-resistant paint and preparation method thereof - Google Patents
Double-component silicone acrylic emulsion mildew-resistant paint and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a double-component silicone acrylic emulsion mildew-resistant paint. The mildew-resistant paint comprises the following components in parts by weight: 95-98 parts of silicone acrylic emulsion, 1-2 parts of a mildew-resistant agent, 1-3 parts of a filler, 1-2 parts of a stabilizer and 0.5-1 parts of a pH value regulator. The invention further discloses a preparation method of the emulsion. The silicone acrylic emulsion is prepared by stepwise polymerizing component-A emulsion with component-B emulsion. The waterborne emulsion is good in coating performance, and the emulsion is dispersed and mixed with the proper mildew-resistant agent to obtain the environment-friendly and efficient mildew-resistant paint; the paint is capable of preventing the infection of various mildews in case of being coated on the surface of a bamboo plate.
Description
Technical field
The present invention relates to a kind of mould-repellant coating and preparation method thereof, particularly a kind of two component organosilicon crylic acid latex mould-repellant coatings for bamboo material surface and preparation method thereof.
Background technology
The growth of mould generally needs following three conditions: 1. suitable humidity and temperature; 2. can cause mouldy nutrition; 3. the bacterial classification that flowing air is brought.The mildew-resistant of material is generally to set about from above three aspects, as long as make material not meet above-mentioned one of them condition in use procedure, can reach the effect of mildew-resistant.
There is following defect usually in general mould-repellant coating: the one, and become film base material to belong to the nutrition of mould (as grease, natural resin etc.), by adding wherein mould inhibitor, can make it temporarily not become the nutritive substance of mould, but, when mould inhibitor runs off or decomposition failure, therefore mould just likely grows; The 2nd, become film base material fine and close not, there is certain anti-mold effect, but in humidity larger environment, because hole strengthens, water ratio raises, and may bring airborne mould spores into, makes mould touch ground, causes mouldy under the dry condition.
In mould-repellant coating formula in early days, normal phenols and the organic heavy metal compound of using, as the benzene mercury naphthenate, Phenylmercuric Acetate etc., the formaldehyde release-type sterilant occurs again subsequently, but contained phenols in these mould-repellant coating formulas, severe toxicity or the high toxic materials such as organic heavy metal compound and formaldehyde, human body and environment are had to larger toxic side effect, stop using at present.The mould inhibitor now grown up is main mainly with material nontoxic or that toxicity is lower greatly, as heterogeneous ring compound, organo-tin compound, organochlorine compound, organocopper compound etc., but mould-repellant coating in the market, existence or fungicidal spectrum are narrow mostly, or validity period is short, or coating is poor, or toxicity is larger, or the problem such as expensive.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of emulsion mould-repellant coating, and this emulsion coating property is good, and colourless low toxicity also has outstanding fungicidal properties.
The technical solution used in the present invention is to provide a kind of pair of component organosilicon crylic acid latex mould-repellant coating, and described mould-repellant coating comprises the component of following weight part, organosilicon crylic acid latex 95-98 part, mould inhibitor 1-2 part, filler 1-3 part, stablizer 1-2 part, pH value conditioning agent 0.5-1 part.
Preferably, described organosilicon crylic acid latex is synthetic by the two component step-by-step polymerizations of AB, and described A component comprises acrylic acid or the like and acrylic ester monomer, and the B component comprises esters of acrylic acid and vinyltriethoxysilane monomer, adds stablizer and pH value conditioning agent in reaction process.
Preferably, described mould inhibitor be selected from IPBC, Wocosin 50TK, benzoglyoxaline, isothiazolinone and tebuconazole one or more are composite, composite ratio is arbitrary proportion; The preferred IPBC of described mould inhibitor.
Preferably, described stablizer is selected from ethylene glycol, propylene glycol, Pentyl alcohol or dibutyl tin dilaurate.
Preferably, described pH value conditioning agent is selected from ammoniacal liquor, sodium bicarbonate or saleratus, and described filler is selected from one or more in calcium carbonate, talcum powder, kaolin, mica powder, pure aluminium silicate, silica powder and white carbon black.
Second technical problem to be solved by this invention be, the preparation method of described pair of component organosilicon crylic acid latex is provided, and described method comprises the steps:
1) A component pre-emulsification: by esters of acrylic acid 50-60 part of following weight part, acrylic acid or the like 1-5 part, emulsifying agent 3-5 part, stablizer 0.5-1.5 part, deionized water 90-110 part is mixed, under the 1000-2000rpm rotating speed emulsification 30-60 minute even to emulsification, obtain A component emulsion, place standby.
2) B component pre-emulsification: by esters of acrylic acid 40-50 part of following weight part, vinyltriethoxysilane 3-20 part, add emulsifying agent 3-5 part, stablizer 0.5-1.5 part, deionized water 90-110 part is mixed, under the 1000-2000rpm rotating speed emulsification 30-60 minute even to emulsification, obtain B component emulsion, place standby.
3) polymerization: the 30%-50% emulsion of the A component emulsion that step 1) is obtained is as end liquid, add initiator, pH value conditioning agent, regulating emulsion pH reaches between 7.5-8.5, be warming up to 60-85 ℃, polyase 13 0-60 minute under the 1000-2000rpm rotating speed, then divide 3-5 to criticize progressively to add A component emulsion and the initiator that remains 50%-70%; After A component emulsion adds, continue minute 3-5 criticize add step 2) the B component emulsion that obtains, stablizer and initiator, maintain 60-85 ℃ of reaction 1-2 hour, cooling discharge obtains organosilicon crylic acid latex.
4) organosilicon crylic acid latex step 3) obtained is under the 500-1500rpm rotating speed, add gradually stablizer and mould inhibitor and filler, continue to stir 30-45 minute, with pH value conditioning agent, adjust the pH value in 7～8 scopes, make described pair of component organosilicon crylic acid latex mould-repellant coating after filtration.
Preferably, described minute 3-5 of step 3) criticizes progressively to add and refers to drip, and described dropping completed in 40 minutes, and be 1-5 minute the interval time between every batch.
Preferably, emulsifying agent is polyoxyethylenated alcohol sodium sulfate and alkylphenol-polyethenoxy (10) the ether OP-10 ratio mixed preparing by weight 1:1.
Preferably, step 1), step 2) and 4) described in stablizer be selected from ethylene glycol, propylene glycol, Pentyl alcohol or dibutyl tin dilaurate.
Preferably, step 3) and 4) described pH value conditioning agent is selected from a kind of in sodium bicarbonate, saleratus or ammoniacal liquor; Described initiator is selected from a kind of in Potassium Persulphate, benzoyl peroxide or Diisopropyl azodicarboxylate; The described mould inhibitor of step 4) be selected from IPBC, Wocosin 50TK, benzoglyoxaline, isothiazolinone and tebuconazole one or more are composite, composite ratio is arbitrary proportion; Preferably, described mould inhibitor is IPBC.
The invention has the beneficial effects as follows that described mould-repellant coating has synthetic convenient, the environmental protection low toxicity, the excellent in performance such as ease for use is high, and mildew resistance is good, its main characteristics is as follows:
1) mould-repellant coating of the present invention is water-borne coatings, has easy construction, the characteristics of environmental protection low toxicity; And the mould-repellant coating body is colourless emulsion, after applying, transparency is high, can keep to greatest extent the original appearance of base material, natural beauty.
2) the present invention, on the basis of conventional acrylic emulsion, by two-pack step-by-step polymerization technique, has prepared the emulsion with " core-shell " structure, has a dispersing property outstanding, and the shelf lives is long, the advantage that film forming properties is good; And further introduced on this basis the silane active group, improved the compactness of coating surface by crosslinking reaction, improved greatly anti-mold effect.
3) mould-repellant coating of the present invention can be chosen specific one or more mould inhibitors and latex composite compounding and form for different moulds, and formula flexibly, has broad spectrum and environmental compatibility, has greatly improved the scope of application and the anti-mold effect of mould-repellant coating.
4), through experiment, mould-repellant coating described in the present invention has outstanding prevention effect on the bamboo recombined material surface to the multiple mould such as aspergillus niger (Aspergillus niger V.Tiegh), Penicillium citrinum (Penicillium citrintim Thom), viride (Trichoderma viride Pers.Ex Fr.) and stain fungus Botryodiplodia theo-bromae (Botryodiplodia theobromae Pat.).
The accompanying drawing explanation
Fig. 1 is the control of mold design sketch;
Fig. 2 is the outward appearance comparison diagram of bamboo recombined material before and after the mildew-resistant emulsion is processed.
Embodiment
Further illustrate implementation of the present invention below in conjunction with drawings and Examples, following embodiment is only for illustrating for specific base material, the anti-mold effect of selecting suitable mould inhibitor to combine and adopt the particular procedure mode to obtain, and within not meaning that the present invention is defined in following ranges.
Embodiment 1
1) preparation of organosilicon crylic acid latex is synthetic:
Take methyl acrylate 56g, vinylformic acid 2g, each 1 gram of emulsifying agent polyoxyethylenated alcohol sodium sulfate and alkylphenol-polyethenoxy (10) ether OP-10, sodium bicarbonate 1 gram, propylene glycol 1 gram, water 50 grams; Even with the 1500rpm emulsify at a high speed at normal temperatures, make A component emulsion;
Take n-butyl acrylate 38 grams, vinyltriethoxysilane 14 grams, each 1 gram of emulsifying agent polyoxyethylenated alcohol sodium sulfate AES and alkylphenol-polyethenoxy (10) ether OP-10, sodium bicarbonate 1 gram, propylene glycol 1 gram, water 50 grams, even with the 1500rpm emulsify at a high speed at normal temperatures, make B component emulsion;
Take the 40 grams uniform A liquid of emulsification, add 2 milliliters of the persulfate aqueous solutions that massfraction is 20%, 1200rpm slowly is warming up to 65 degree under stirring, and is incubated 1 hour.Slowly drip in three batches residue A liquid, between first and second batch, be 2 minutes interval time, and between second batch and the 3rd batch, be 4 minutes interval time, in three batches of reinforced total used times control 40 minutes, add 3 milliliters of potassium persulfate solutions in process, be warming up to 75 degree, be incubated half an hour.Drip in three batches B liquid, between first and second batch, the timed interval is 3 minutes, in 4 minutes timed intervals between second batch and the 3rd batch, drips the residue persulfate aqueous solution in process simultaneously, control in rate of addition to 40 minute and all drip off, the temperature of dropping process should be higher than 80 degree, and after all dripping off, temperature control 75 is spent, be incubated half an hour, reach 7～8 with 10% ammoniacal liquor adjust pH, cooling discharge, make two component organosilicon crylic acid latexs.
2) preparation of mould-repellant coating
Mould inhibitor is chosen IPBC; Take in the 50.0 gram organosilicon crylic acid latexs that IPBC 0.5 gram makes in upper step, add Pentyl alcohol 1 gram, light calcium carbonate 0.5 gram, under 1200rpm, emulsification is uniformly dispersed, remove by filter insoluble impurity, make two component organosilicon crylic acid latex mould-repellant coatings.
Embodiment 2
1) preparation of organosilicon crylic acid latex is synthetic:
Take methyl methacrylate 54g, methacrylic acid 4g, each 1 gram of emulsifying agent polyoxyethylenated alcohol sodium sulfate and alkylphenol-polyethenoxy (10) ether OP-10, saleratus 1 gram, propylene glycol 1 gram, water 60 grams; Even with the 1500rpm emulsify at a high speed at normal temperatures, make A component emulsion;
Take n-BMA 42 grams, vinyltriethoxysilane 10 grams, each 1 gram of emulsifying agent polyoxyethylenated alcohol sodium sulfate AES and alkylphenol-polyethenoxy (10) ether OP-10, saleratus 1 gram, Pentyl alcohol 1 gram, water 40 grams, even with the 1500rpm emulsify at a high speed at normal temperatures, make B component emulsion;
Take the 40 grams uniform A liquid of emulsification, add 2 milliliters of the persulfate aqueous solutions that massfraction is 25%, 1200rpm slowly is warming up to 70 degree under stirring, and is incubated 1 hour.Slowly drip in four batches residue A liquid, between first and second batch, be 2 minutes interval time, between second batch and the 3rd batch, be 3 minutes interval time, between the 3rd batch and the 4th batch, the timed interval is 5 minutes, in controlling 40 minutes, drip off, add 3 milliliters of potassium persulfate solutions in process, be warming up to 85 degree, be incubated half an hour.Drip in four batches B liquid, between first and second batch, the timed interval is 3 minutes, 4 minutes timed intervals between second batch and the 3rd batch, 5 minutes timed intervals between the 3rd batch and the 4th batch, drip the residue persulfate aqueous solution in process simultaneously, control in rate of addition to 40 minute and all drip off, the temperature that drips process should be higher than 85 degree, after all dripping off, temperature control 75 degree, be incubated half an hour, with 10% ammoniacal liquor adjust pH, reaches 7～8, cooling discharge, make two component organosilicon crylic acid latexs.
2) preparation of mould-repellant coating
Mould inhibitor is chosen Wocosin 50TK; Take in the 50.0 gram organosilicon crylic acid latexs that Wocosin 50TK 0.5 gram makes in upper step, add propylene glycol 1 gram, pure aluminium silicate 0.5 gram, under 1200rpm, emulsification is uniformly dispersed, and removes by filter insoluble impurity, makes two component organosilicon crylic acid latex mould-repellant coatings.
Embodiment 3
1) preparation of organosilicon crylic acid latex is synthetic:
Take methyl acrylate 52g, vinylformic acid 6g, each 1 gram of emulsifying agent polyoxyethylenated alcohol sodium sulfate and alkylphenol-polyethenoxy (10) ether OP-10, sodium bicarbonate 1 gram, ethylene glycol 1 gram, water 40 grams; Even with the 1500rpm emulsify at a high speed at normal temperatures, make the A component;
Take n-BMA 40 grams, vinyltriethoxysilane 12 grams, each 1 gram of emulsifying agent polyoxyethylenated alcohol sodium sulfate AES and alkylphenol-polyethenoxy (10) ether OP-10, sodium bicarbonate 1 gram, dibutyl tin dilaurate 1 gram, water 60 grams, even with the 1500rpm emulsify at a high speed at normal temperatures, make the B component;
Take the 40 grams uniform A liquid of emulsification, add 3 milliliters of the persulfate aqueous solutions that massfraction is 10%, 1200rpm slowly is warming up to 75 degree under stirring, and is incubated 1 hour.Slowly drip residue A liquid, between first and second batch, be 2 minutes interval time, between second batch and the 3rd batch, be 3 minutes interval time, between the 3rd batch and the 4th batch, the timed interval is 5 minutes, in controlling 40 minutes, drip off, add 4 milliliters of potassium persulfate solutions in process, be warming up to 80 degree, be incubated half an hour.Drip in three batches B liquid, between first and second batch, the timed interval is 3 minutes, 4 minutes timed intervals between second batch and the 3rd batch, controlling rate of addition is to drip off in 40 minutes, drip the residue persulfate aqueous solution in process simultaneously, control in rate of addition to 40 minute and all drip off, the temperature that drips process should be higher than 82 degree, after all dripping off, temperature control 72 degree, be incubated half an hour, with 10% ammoniacal liquor adjust pH, reaches 7～8, cooling discharge, make two component organosilicon crylic acid latexs.
2) preparation of mould-repellant coating
Mould inhibitor is chosen tebuconazole; Take in the 50.0 gram organosilicon crylic acid latexs that tebuconazole 0.5 gram makes in upper step, add propylene glycol 1 gram, talcum powder 0.5 gram, under 1200rpm, emulsification is uniformly dispersed, and removes by filter insoluble impurity, makes two component organosilicon crylic acid latex mould-repellant coatings.
Embodiment 4
1) preparation of organosilicon crylic acid latex is synthetic:
Take methyl acrylate 50g, vinylformic acid 5g, each 1 gram of emulsifying agent polyoxyethylenated alcohol sodium sulfate and alkylphenol-polyethenoxy (10) ether OP-10, sodium bicarbonate 1 gram, propylene glycol 1 gram, water 50 grams; Even with the 1500rpm emulsify at a high speed at normal temperatures, make A component emulsion;
Take n-butyl acrylate 40 grams, vinyltriethoxysilane 14 grams, each 1 gram of emulsifying agent polyoxyethylenated alcohol sodium sulfate AES and alkylphenol-polyethenoxy (10) ether OP-10, sodium bicarbonate 1 gram, propylene glycol 1 gram, water 50 grams, even with the 1500rpm emulsify at a high speed at normal temperatures, make B component emulsion;
Take the 40 grams uniform A liquid of emulsification, add 2 milliliters of the benzoyl peroxide ethanolic solns that massfraction is 20%, 1200rpm slowly is warming up to 65 degree under stirring, and is incubated 1 hour.Slowly drip in three batches residue A liquid, between first and second batch, be 2 minutes interval time, and between second batch and the 3rd batch, be 4 minutes interval time, in three batches of reinforced total used times control 40 minutes, add 3 milliliters of benzoyl peroxide solution in process, be warming up to 75 degree, be incubated half an hour.Drip in three batches B liquid, between first and second batch, the timed interval is 3 minutes, in 4 minutes timed intervals between second batch and the 3rd batch, drips residue benzoyl peroxide ethanolic soln in process simultaneously, control in rate of addition to 40 minute and all drip off, the temperature of dropping process should be higher than 80 degree, and after all dripping off, temperature control 75 is spent, be incubated half an hour, reach 7～8 with 10% ammoniacal liquor adjust pH, cooling discharge, make two component organosilicon crylic acid latexs.
2) preparation of mould-repellant coating
Mould inhibitor is chosen benzoglyoxaline; Take in the 50.0 gram organosilicon crylic acid latexs that benzoglyoxaline 0.5 gram makes in upper step, add ethylene glycol 1 gram, kaolin 0.5 gram, under 1200rpm, emulsification is uniformly dispersed, and removes by filter insoluble impurity, makes two component organosilicon crylic acid latex mould-repellant coatings.
Embodiment 5
1) preparation of organosilicon crylic acid latex is synthetic:
Take methyl acrylate 53g, vinylformic acid 2g, each 1 gram of emulsifying agent polyoxyethylenated alcohol sodium sulfate and alkylphenol-polyethenoxy (10) ether OP-10, sodium bicarbonate 1 gram, propylene glycol 1 gram, water 50 grams; Even with the 1500rpm emulsify at a high speed at normal temperatures, make A component emulsion;
Take n-butyl acrylate 44 grams, vinyltriethoxysilane 14 grams, each 1 gram of emulsifying agent polyoxyethylenated alcohol sodium sulfate AES and alkylphenol-polyethenoxy (10) ether OP-10, sodium bicarbonate 1 gram, propylene glycol 1 gram, water 50 grams, even with the 1500rpm emulsify at a high speed at normal temperatures, make B component emulsion;
Take the 40 grams uniform A liquid of emulsification, add 2 milliliters of the Diisopropyl azodicarboxylate ethanolic solns that massfraction is 20%, 1200rpm slowly is warming up to 65 degree under stirring, and is incubated 1 hour.Slowly drip in three batches residue A liquid, between first and second batch, be 2 minutes interval time, and between second batch and the 3rd batch, be 4 minutes interval time, in three batches of reinforced total used times control 40 minutes, add 3 milliliters of Diisopropyl azodicarboxylate solution in process, be warming up to 75 degree, be incubated half an hour.Drip in three batches B liquid, between first and second batch, the timed interval is 3 minutes, in 4 minutes timed intervals between second batch and the 3rd batch, drips residue Diisopropyl azodicarboxylate ethanolic soln in process simultaneously, control in rate of addition to 40 minute and all drip off, the temperature of dropping process should be higher than 80 degree, and after all dripping off, temperature control 75 is spent, be incubated half an hour, reach 7～8 with 10% ammoniacal liquor adjust pH, cooling discharge, make two component organosilicon crylic acid latexs.
2) preparation of mould-repellant coating
Mould inhibitor is chosen isothiazolinone; In the 50.0 gram organosilicon crylic acid latexs that isothiazolinone 0.5 gram makes in upper step, add Pentyl alcohol 1 gram, silica powder 0.5 gram, under 1200rpm, emulsification is uniformly dispersed, and removes by filter insoluble impurity, makes two component organosilicon crylic acid latex mould-repellant coatings.
The organosilicon crylic acid latex of preparation in embodiment 1 to 5 of take is dispersion liquid, removes by filter insoluble impurity, in cold soaking stain mode, is coated on the bamboo recombined material surface, and coated weight is 200-250g/m2.Carry out the fungicidal properties test according to standard GB/T/T18261-2000 " mould inhibitor control timber mould and the blue experimental technique that becomes bacterium ".The bamboo recombined material of processing without mildew-resistant of take is Comparative Examples.For the multiple mould such as aspergillus niger, Penicillium citrinum, viride and the blue anti-mold effect that becomes the bacterium Botryodiplodia theo-bromae as shown in Table 1.
Table one anti-mold effect (mould inhibiting rate)
| Different mould inhibitor combinations | Aspergillus niger | Penicillium citrinum | Viride | Blue change bacterium |
| Embodiment 1 | 100% | 100% | 100% | 100% |
| Embodiment 2 | 100% | 100% | 100% | 75% |
| Embodiment 3 | 100% | 100% | 100% | 70% |
| Embodiment 4 | 100% | 100% | 100% | 80% |
| Embodiment 5 | 100% | 100% | 100% | 83% |
| Comparative Examples | 0% | 0% | 0% | 0% |
What Fig. 1 meaned is the control of mold design sketch, and left figure is the bamboo recombined material of processing through the mould-repellant coating of embodiment 2, and right figure is undressed bamboo recombined material, is followed successively by the sample of aspergillus niger, Penicillium citrinum, Botryodiplodia theo-bromae and viride from top to bottom; What Fig. 2 meaned is the outward appearance comparison diagram of bamboo recombined material before and after the mildew-resistant emulsion is processed, and two, the left side is sample after processing, and two, the right is sample before processing.
Claims (10)
1. a two component organosilicon crylic acid latex mould-repellant coating, it is characterized in that: described mould-repellant coating comprises the component of following weight part, organosilicon crylic acid latex 95-98 part, mould inhibitor 1-2 part, filler 1-3 part, stablizer 1-2 part, pH value conditioning agent 0.5-1 part.
2. according to claim 1 pair of component organosilicon crylic acid latex mould-repellant coating, it is characterized in that: described organosilicon crylic acid latex is synthetic by the two component step-by-step polymerizations of AB, described A component comprises acrylic acid or the like and acrylic ester monomer, the B component comprises esters of acrylic acid and vinyltriethoxysilane monomer, adds stablizer and pH value conditioning agent in reaction process.
3. according to claim 1 pair of component organosilicon crylic acid latex mould-repellant coating, it is characterized in that: described mould inhibitor is selected from one or more in IPBC, Wocosin 50TK, benzoglyoxaline, isothiazolinone and tebuconazole; The preferred IPBC of described mould inhibitor.
4. according to claim 1 and 2 pair of component organosilicon crylic acid latex mould-repellant coating, it is characterized in that: described stablizer is selected from ethylene glycol, propylene glycol, Pentyl alcohol or dibutyl tin dilaurate.
5. according to claim 1 and 2 pair of component organosilicon crylic acid latex mould-repellant coating, it is characterized in that: described pH value conditioning agent is selected from ammoniacal liquor, sodium bicarbonate or saleratus, described filler is selected from one or more in calcium carbonate, talcum powder, kaolin, mica powder, pure aluminium silicate, silica powder and white carbon black.
6. as the preparation method of described pair of component organosilicon crylic acid latex mould-repellant coating of claim 1-5 any one, it is characterized in that, comprise the steps:
1) A component pre-emulsification: by esters of acrylic acid 50-60 part of following weight part, acrylic acid or the like 1-5 part, emulsifying agent 3-5 part, stablizer 0.5-1.5 part, deionized water 90-130 part is mixed, under the 1000-2000rpm rotating speed emulsification 30-60 minute even to emulsification, obtain A component emulsion, place standby;
2) B component pre-emulsification: by esters of acrylic acid 40-50 part of following weight part, vinyltriethoxysilane 3-20 part, add emulsifying agent 3-5 part, stablizer 0.5-1.5 part, deionized water 90-130 part is mixed, under the 1000-2000rpm rotating speed emulsification 30-60 minute even to emulsification, obtain B component emulsion, place standby;
3) polymerization: the 30%-50% emulsion of the A component emulsion that step 1) is obtained, as end liquid, adds initiator, pH value conditioning agent; Regulate emulsion pH and reach between 7.5-8.5, be warming up to 70-80 ℃, polyase 13 0-60 minute under the 1000-2000rpm rotating speed, then divide 3-5 to criticize progressively to add A component emulsion and the initiator that remains 50%-70%; After A component emulsion adds, continue minute 3-5 criticize add step 2) the B component emulsion that obtains, stablizer and initiator, maintain 60-80 ℃ of reaction 1-2 hour, cooling discharge obtains organosilicon crylic acid latex;
4) organosilicon crylic acid latex step 3) obtained is under the 500-1500rpm rotating speed, add gradually stablizer and mould inhibitor and filler, continue to stir 30-45 minute, with pH value conditioning agent, adjust the pH value in 7～8 scopes, make described pair of component organosilicon crylic acid latex mould-repellant coating after filtration.
7. preparation method according to claim 6 is characterized in that: described 3-5 criticizes to drip and completed in 40 minutes, and the timed interval between every batch is 1-5 minute.
8. preparation method according to claim 6 is characterized in that: described emulsifying agent is polyoxyethylenated alcohol sodium sulfate and alkylphenol-polyethenoxy (10) the ether OP-10 ratio mixed preparing by weight 1:1.
9. preparation method according to claim 6, is characterized in that: step 1), step 2) and 4) described in stablizer be selected from ethylene glycol, propylene glycol, Pentyl alcohol or dibutyl tin dilaurate.
10. preparation method according to claim 6 is characterized in that: step 3) and 4) described pH value conditioning agent is selected from sodium bicarbonate, saleratus or ammoniacal liquor; Described initiator is Potassium Persulphate, benzoyl peroxide or Diisopropyl azodicarboxylate; The described mould inhibitor of step 4) is selected from one or more in IPBC, Wocosin 50TK, benzoglyoxaline, isothiazolinone and tebuconazole; Preferably, described mould inhibitor is IPBC.
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| CN107417197B (en) * | 2017-04-27 | 2020-02-18 | 锦州东方雨虹建筑材料有限责任公司 | Exposed wear-resistant polymer cement waterproof slurry and preparation method thereof |
| CN107815198A (en) * | 2017-10-26 | 2018-03-20 | 宁波甬波新材料科技有限公司 | A kind of water paint for floor chamfer site and preparation method thereof |
| CN109593430A (en) * | 2018-11-14 | 2019-04-09 | 江苏海龙核科技股份有限公司 | A kind of anticorrosion, mould proof civil air defense constructions and installations coating |
| CN111019455A (en) * | 2019-11-27 | 2020-04-17 | 河北晨阳工贸集团有限公司 | Water-based environment-friendly indoor insect-proof and mildew-proof coating and preparation method thereof |
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