CN105060737A - Water repellent as well as preparation method and application thereof - Google Patents
Water repellent as well as preparation method and application thereof Download PDFInfo
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- CN105060737A CN105060737A CN201510428099.XA CN201510428099A CN105060737A CN 105060737 A CN105060737 A CN 105060737A CN 201510428099 A CN201510428099 A CN 201510428099A CN 105060737 A CN105060737 A CN 105060737A
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- hydrophober
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- pearlstone
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Abstract
The invention discloses a water repellent as well as a preparation method and application thereof. The water repellent comprises the following components in parts by weight: 20-70 parts of active polysiloxane, 0-5 parts of alkyl triethoxysilane, 0-10 parts of an emulsifier, 0.1-2 parts of a mould inhibitor, 0.5-2 parts of a defoaming agent and 14.4-79.4 parts of deionized water. The water repellent provided by the invention is compatible to phenolic resin, and glass fiber, rock wool and expanded perlite are enabled to have excellent hydrophobicity when the adding amount of the water repellent is 0.1-0.5%.
Description
Technical field
The application belongs to material used for building exterior wall, particularly relates to a kind of rock wool, glass and pearlstone hydrophober, its preparation method and application thereof.
Background technology
Building exterior wall heat preserving system is the key link of building energy conservation.Traditional lagging material, owing to employing material inflammable in a large number, result in numerous fire, and the personnel caused and property damage are very large.
Accomplish that outer wall heat preservation system is really fire-retardant, the inorganic non-combustible materials such as rock wool must be used to do lagging material, but these inorganic materials very easily moisture absorption, after the moisture absorption, heat-insulating property sharply declines, and gain in weight, cause the danger that exterior wall heat-preserving system deformation and failure even comes off.
Market mainly uses rock wool, mineral wool, glass and pearlstone at inorganic heat insulation material at present.Be used for external wall at these materials, country has also promulgated standard GB/T25975-2010, proposes explicitly call for hydrophobic rate, short-term water-intake rate and long-term water-intake rate etc.For specification inorganic heat insulation material provides Quality estimation foundation.
And these lagging materials are selected to be exactly natural be many empty structures, very easily absorb water.Typical treatment process is: glass rock wool is sprayed on high-temperature rock-wool surface with the solution that phenolic aldehyde+hydrophober+silane is made into, thus hydrophober forms hydrophobic film on rock wool surface, thus reaches hydrophobic.So hydrophober must be good with water, phenolic aldehyde and silane consistency, rock wool and the process of glass hydrophobic just can be applied to.
Summary of the invention
The object of the present invention is to provide a kind of hydrophober, its preparation method and application thereof, to overcome deficiency of the prior art.
For achieving the above object, the invention provides following technical scheme:
The embodiment of the present application discloses a kind of hydrophober, comprises according to weight part:
Reactive polysiloxanes 20 ~ 70 parts;
Alkyl triethoxysilane 0 ~ 5 part;
Emulsifying agent 0 ~ 10 part;
Mould inhibitor 0.1 ~ 2 part;
Defoamer 0.5 ~ 2 part, and
Deionized water 10.4 ~ 79.4 parts.
Preferably, in above-mentioned hydrophober, described emulsifying agent is straight or branched C
12/ C
14fatty alcohol-polyoxyethylene ether and Vinyl Acetate Copolymer mixture.
Preferably, in above-mentioned hydrophober, described reactive polysiloxanes refers to the general name containing functional functional group polydimethylsiloxane, and molecular formula is:
R1-(MeR3Si-O-)
m-(Me
2Si-O-)
n-R2；
Wherein,
R1: methoxyl group, oxyethyl group, ethenylmethoxy, amino, hydroxyl, vinyl or hydrogen;
R2: methoxyl group, oxyethyl group, ethenylmethoxy, amino, hydroxyl, vinyl or hydrogen;
R3: alkyl C1-C6, hydrogen or vinyl;
M, n are that the chain link of 1-1000 repeats.
Preferably, in above-mentioned hydrophober, described emulsifying agent is straight or branched C
12/ C
14fatty alcohol-polyoxyethylene ether and Vinyl Acetate Copolymer mixture.
Preferably, in above-mentioned hydrophober, described defoamer is silicone based defoamer.
Preferably, in above-mentioned hydrophober, described mould inhibitor be selected from can mould fungus inhibition growth have phenols, chlorophenols or organic tin salt.
Accordingly, the embodiment of the present application also discloses a kind of preparation method of hydrophober, adds emulsifying agent by after reactive polysiloxanes and alkyl triethoxysilane mixing, normal temperature down cut becomes paste simultaneously, then add deionized water, mould inhibitor and defoamer are added simultaneously, obtain hydrophober.
The embodiment of the present application also discloses the application of hydrophober on rock mineral wool, glass or pearlstone.
Preferably, in the applications described above, the consumption of described hydrophober is 0.1% ~ 0.5% of rock mineral wool, glass or pearlstone dry weight.
Preferably, in the applications described above, after described hydrophober dilution, direct spraying is on described rock mineral wool, glass or pearlstone, and in spraying process, the surface temperature control of rock mineral wool, glass or pearlstone is at 300 ~ 400 DEG C.
Compared with prior art, the invention has the advantages that:
(1), hydrophober of the present invention meets GB/T25975 exterior-wall heat insulation rock wool standard completely, and making inorganic materials become high-end external-wall heat-insulation material has had quality-guarantee, achieves qualitative leap, has economic implications.
(2), organosilicon as nontoxic, high-low temperature resistant, ageing-resistant material, rock wool, the glass of this material processing have long durability, formula there is superiority.
(3), formulation selection material of the present invention is the mixed system of reactive polysiloxanes and silane, improve hydrophobicity performance, simultaneously owing to employing defoamer, make emulsion in use can not cause the absorption of activeconstituents because of foam accumulation, thus ensure that the stability of silicone resin film forming, guarantee the stability of product application, it is simply effective that emulsion formulates technique.Be applied to rock wool, glass and pearlstone technical feasibility very strong.
Embodiment
The embodiment of the present application discloses a kind of hydrophober, comprises according to weight part:
Reactive polysiloxanes 20 ~ 70 parts;
Alkyl triethoxysilane 0 ~ 5 part;
Emulsifying agent 0 ~ 10 part;
Mould inhibitor 0.1 ~ 2 part;
Defoamer 0.5 ~ 2 part, and
Deionized water 10.4 ~ 79.4 parts.
In above-mentioned hydrophober, (activity) polysiloxane refers to the general name of (containing functional functional group) polydimethylsiloxane, and molecular formula is as follows: R1-(MeR3Si-O-) m-(Me2Si-O-) n-R2, wherein
R1: methoxyl group, oxyethyl group, ethenylmethoxy, amino, hydroxyl, vinyl, hydrogen;
R2: methoxyl group, oxyethyl group, ethenylmethoxy, amino, hydroxyl, vinyl, hydrogen;
R3: alkyl C1-C6, hydrogen, vinyl;
M, n are that the chain link of 1-1000 repeats.
Ethoxysilane is: R4-Si-(O-C2H5) 3, wherein
R4:C1-C8 alkyl (methyl, ethyl ...).
Emulsifying agent: the stablizer being emulsion is a class tensio-active agent.The effect of emulsifying agent is: when it is dispersed in dispersate surperficial, forms film or electrostatic double layer, disperse phase can be made with electric charge, the small droplets of disperse phase so just can be stoped to condense mutually, make the emulsion of formation more stable.
Emulsifying agent is selected from non-ionic type: straight or branched C
12/ C
14fatty alcohol-polyoxyethylene ether and Vinyl Acetate Copolymer mixing etc.The selection of emulsifying agent is based on product emulsion intercalation method and fixed in the consistency of resol.We select emulsifying agent, facts have proved with rock wool and glass phenolic compatible very good.
Emulsifying process: material makes inconsistent two-phase material form stable liquid by high speed shear or clarifixator under emulsifying agent helps, and emulsion has micro emulsion and huge breast.
Defoamer, use silicone based defoamer must be the defoamer of Water emulsion or self-emulsifying type, wherein Water emulsion main material is emulsified into O/w emulsion after polysiloxane and gas-phase silica mix, this emulsion has the function suppressing foam and eliminate foam, and owing to being polysiloxane-based, so good with Miscibility; Also can select in addition self-emulsifying polysiloxanes defoaming agents be used for froth breaking press down bubble.
The silicone based defoamer of defoamer, meets de-soak and suppress foam, otherwise product in use, produces a large amount of foam, and effective constituent cannot enter into rock wool and glass micropore is inner, causes hydrophobic rate to decline.
The design of the whole formula of this case contains the polydimethylsiloxane+silane+water+mould inhibitor of emulsifying agent+band functional group+containing silicon defoaming agent, and over-all properties reflects that hydrophober that this formula produces reaches hydrophobic rate more than 99% in the accessibility of the treatment solution configuration as rock wool, glass and pearlstone, final treating product.
This advantage to be mainly reflected in use procedure and the consistency of phenol resin solution of rock wool and glass, non-foam in use procedure, thus being sprayed at the homogeneity on glass, rock wool surface, final result makes the glass after being processed, rock wool product has excellent hydrophobic nature.
The raising of performance carries the activeconstituents of functional polysiloxane+functional silane, these activeconstituentss are when configuring rock wool, glass treatment solution, add-on is 0.2% hydrophober, resol+66.5% water+a small amount of silane adjuvant of 33%, if so hydrophober is incompatible with phenolic aldehyde, effective constituent will be flocculated, effective constituent reduces, in use possibility plug nozzle, thus cause using inefficacy or effective content to reduce.Product hydrophobic rate after process is low.Meanwhile, if the treatment solution configured, cause a large amount of bubble, also can affect volume pump measurement problem, the moment of ejection simultaneously, a large amount of foam produced, and made the Surface absorption reduction of glass, rock wool, finally also affected effective constituent, thus affect hydrophobic rate.
Be with functional functional group polydimethylsiloxane+silane in formula, mutually can react, in the micropore of rock wool and glass after absorption, heat and be reacted into silicone resin film under acid-base condition, silicone resin film has hydrophobic, airing function.
Its reaction mechanism is as follows:
The hydroxyl of 3 officials' energy formed after functional silane ethoxy hydrolysis and the functional group of the polysiloxane of 2 functional groups reflect, deviate from low molecule ethanol, chain, in continuous growth, forms web-like silicon resin molding:
R1-(MeR
3Si-O-)m-(Me
2Si-O-)n-R
2+R
4-Si-(O-C
2H
5)
3---
R1-(MeR
3Si-O-)m-(Me
2Si-O-)n-R
2Si.-(O-C
2H
5)R
4+2HO-C
2H
5
The present invention is described further by the following example: according to following embodiment, the present invention may be better understood.But those skilled in the art will readily understand, concrete material ratio, processing condition and result thereof described by embodiment only for illustration of the present invention, and should can not limit the present invention described in detail in claims yet.
Embodiment 1
In the present embodiment, reactive polysiloxanes is R1-(MeR3Si-O-)
m-(Me
2si-O-)
n-R2, wherein R1 is methoxyl group, and R2 is methoxyl group, and R3 is methyl, and m is 30, n is 15.Emulsifying agent is fatty alcohol-polyoxyethylene ether and Vinyl Acetate Copolymer mixing.Defoamer is be emulsified into O/w emulsion after polysiloxane and gas-phase silica mix.
After 20 parts by weight of activated polysiloxane and the mixing of 2 weight part alkyl triethoxysilane, after mixing, add 10 parts by weight Emulsifier, within 15 ~ 30 minutes, become paste by high speed shear under normal temperature simultaneously.Survey particle diameter and the water-soluble of paste, 15 parts by weight of deionized water are added after qualified, 0.1 weight part mould inhibitor and 0.5 weight part defoamer are added simultaneously, the oyster white liquid obtained is rock wool, glass has excellent hydrophobic nature, note during interpolation testing with phenolic compatible, namely order of addition detects, inappropriate order of addition will cause floss to produce, the hydrophobic nature of adding 0.1 ~ 0.5% of process material dry weight meets GB/T25975-2010 requirement completely, meet long-term hydrophobicity performance simultaneously, when effective content 60%, the additional proportion that suggestion is best is 0.2%.
Adopt GB/T10299-2011 experimental technique to test above-mentioned hydrophober, measure its hydrophobic rate all higher than 99%, meet and exceed the requirement in standard.
Embodiment 2
In the present embodiment, reactive polysiloxanes is R1-(MeR3Si-O-)
m-(Me
2si-O-)
n-R2, wherein R1 is hydrogen base, and R2 is hydrogen base, and R3 is methyl, and m is 12, n is 500.Emulsifying agent is fatty alcohol-polyoxyethylene ether and Vinyl Acetate Copolymer mixing.Defoamer is be emulsified into O/w emulsion after polysiloxane and gas-phase silica mix.
After 70 parts by weight of activated polysiloxane and the mixing of 4 weight part alkyl triethoxysilane, after mixing, add 5 parts by weight Emulsifier, within 15 ~ 30 minutes, become paste by high speed shear under normal temperature simultaneously.Survey particle diameter and the water-soluble of paste, add 15 parts by weight of deionized water, 2 weight part mould inhibitors and 2 weight part defoamers are added simultaneously after qualified, the oyster white liquid obtained has excellent hydrophobic nature on rock wool, glass.
Adopt GB/T10299-2011 experimental technique to test above-mentioned hydrophober, measure its hydrophobic rate all higher than 99%, meet and exceed the requirement in standard.
Embodiment 3
In the present embodiment, reactive polysiloxanes is R1-(MeR3Si-O-)
m-(Me
2si-O-)
n-R2, wherein R1 is oxyethyl group, and R2 is oxyethyl group, and R3 is vinyl, and m is 23, n is 700.Emulsifying agent is fatty alcohol-polyoxyethylene ether and Vinyl Acetate Copolymer mixing.Defoamer is be emulsified into O/w emulsion after polysiloxane and gas-phase silica mix.
After 40 parts by weight of activated polysiloxane and the mixing of 5 weight part alkyl triethoxysilane, after mixing, add 7 parts by weight Emulsifier, within 15 ~ 30 minutes, become paste by high speed shear under normal temperature simultaneously.Survey particle diameter and the water-soluble of paste, add 50 parts by weight of deionized water, 1 weight part mould inhibitor and 1.4 weight part defoamers are added simultaneously after qualified, the oyster white liquid obtained has excellent hydrophobic nature hydrophober on rock wool, glass.
Adopt GB/T10299-2011 experimental technique to test above-mentioned hydrophober, measure its hydrophobic rate all higher than 99%, meet and exceed the requirement in standard.
Application examples 1: ore deposit (rock) cotton application
1. compatibility test: hydrophober and all kinds of rock wool very good by phenolic aldehyde consistency, and the following two kinds of methods of aqueous solution compatibility test of phenolic aldehyde:
A) getting the resol glue of about 10 grams, effective active composition in hydrophober stoste 0.1-0.15 gram is added and stirs, as produced without floss, being compatible, otherwise by method b) sequentially detect again.
B) the resol glue dilute with water 2.5-3 getting about 10 grams doubly, stirs, adds effective active composition 0.1-0.15 gram in hydrophober stoste, stir, and as produced without floss, is compatible.
Tested from aforesaid method, the hydrophober of this case and qualified phenolic aldehyde or acrylic resin all compatible.
Attention: resol due to activity high, the solubleness in water is with storage time and storing temp change, and the time is long and temperature is low all will cause water-soluble decline, and the resol of layering cannot be completely compatible with hydrophober.
2. the mixed solution stirred evenly is sprayed on ore deposit (rock) cotton in proportion.Because rock wool temperature is high, active substance may solidify, and surface temperature control, at 300 ~ 400 DEG C, should be noted that the cleaning of nozzle, prevent blocking cause ore deposit (rock) cotton untreated to or process not exclusively.
3. in hydrophober stoste, effective active composition adding proportion is the 0.1%-0.5% of ore deposit (rock) cotton dry weight.
4. the material handled well is dry until constant weight under heating or normal temperature, and detect according to GB/T25975-2010, ore deposit (rock) cotton hydrophobic rate reaches more than 99%.The long-term water-intake rate of 28 days meets international standard EN12087 requirement simultaneously.
5. dry constant weight: 150 degree, 2-4 hour; 50-60 degree, 2-3 days.Normal temperature needs more than one week.
Use from product different client, and that produces send national authority to detect office for the sampling of exterior-wall heat insulation rock cotton board, the examining report display of Nanjing glass institute, the rock cotton board hydrophobic rate produced in large production test, far above national standard requirement, proves with the product hydrophobicity performance after this product treatment rock wool excellent by production real example.
Application examples 2: glass is applied
The application of hydrophober on glass and rock wool similar, can add silane coupled simultaneously.Hydrophober and various silane coupling agent consistency good.
Application examples 3: pearlstone is applied
1. hydrophober both can on-the-spot be allocated, and also can be diluted to diluent in advance with water in the ratio of 1:1 to 1:10 and use.During allotment pre-dilution liquid, slowly add water when being recommended in stirring at low speed and dilute.
2. diluent is painted on perlite, and usage quantity is account for about 0.2% of process material dry weight according to effective content.
If hydrophober spray is on pearlstone surface, temperature controls at 300 ~ 400 DEG C, and hydrophober nozzle notes periodic cleaning, prevents blocking, affects adding of hydrophober.
Add, very little to the raising of hydrophobic rate.
Comparison study example
Hydrophobic nature data, are applied on pearlstone, detection method ISO303-77:
Can see, hydrophober compares with industry like product, and hydrophobicity performance is excellent.
For hydrophober in the process of pearlstone hydrophobic, different ratios, finds out the water-intake rate change of product, proves that usage quantity 0.2% just can make processed product have excellent hydrophobicity performance from the side.Add-on is few, and cost increases considerably less.
Hydrophober of the present invention is applied to rock wool, and the hydrophobicity performance of glass and pearlstone is good.
The selection of emulsifying agent is based on product emulsion intercalation method and fixed with the consistency of resol.We select emulsifying agent, facts have proved with rock wool and glass phenolic compatible very good.
The silicone based defoamer of defoamer, meets de-soak and suppress foam, otherwise product in use, produces a large amount of foam, and effective constituent cannot enter into rock wool and glass micropore is inner, causes hydrophobic rate to decline.
In the cotton surface hydrophobic treating processes of glass, add defoamer, pressing effective content metering, the additional proportion that suggestion is best is process material dry weight 0.2%, and test hydrophobic rate reaches more than 99%.And do not add the hydrophober of defoamer, equally when effective content, the additional proportion using suggestion best is the hydrophober of 0.2%, and hydrophobic rate is very unstable, and the hydrophobic rate distribution obtaining sample, from 80-99%, illustrates that foam have impact on the uniform pickup of hydrophober.
What mould inhibitor can select mould fungus inhibition to grow has phenols (as phenol), chlorophenols (as Pentachlorophenol), organic tin salt (as chlorination three second or tributyl tin etc.) etc. all can use.
Finally, also it should be noted that, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.
Claims (9)
1. a hydrophober, is characterized in that, comprises according to weight part:
Reactive polysiloxanes 20 ~ 70 parts;
Alkyl triethoxysilane 0 ~ 5 part;
Emulsifying agent 0 ~ 10 part;
Mould inhibitor 0.1 ~ 2 part;
Defoamer 0.5 ~ 2 part, and
Deionized water 10.4 ~ 79.4 parts.
2. hydrophober according to claim 1, is characterized in that: described reactive polysiloxanes refers to the general name containing functional functional group polydimethylsiloxane, and molecular formula is:
R1-(MeR3Si-O-)
m-(Me
2Si-O-)
n-R2；
Wherein,
R1: methoxyl group, oxyethyl group, ethenylmethoxy, amino, hydroxyl, vinyl or hydrogen;
R2: methoxyl group, oxyethyl group, ethenylmethoxy, amino, hydroxyl, vinyl or hydrogen;
R3: alkyl C1-C6, hydrogen or vinyl;
M, n are that the chain link of 1-1000 repeats.
3. hydrophober according to claim 1, is characterized in that: described emulsifying agent is straight or branched C
12/ C
14fatty alcohol-polyoxyethylene ether and Vinyl Acetate Copolymer mixture.
4. hydrophober according to claim 1, is characterized in that: described defoamer is silicone based defoamer.
5. hydrophober according to claim 1, is characterized in that: described mould inhibitor be selected from can mould fungus inhibition growth have phenols, chlorophenols or organic tin salt.
6. the preparation method of hydrophober described in claim 1, it is characterized in that: add emulsifying agent by after reactive polysiloxanes and alkyl triethoxysilane mixing, normal temperature down cut becomes paste simultaneously, then adds deionized water, mould inhibitor and defoamer are added simultaneously, obtain hydrophober.
7. the application of hydrophober described in claim 1 on rock mineral wool, glass or pearlstone.
8. application according to claim 7, is characterized in that: the consumption of described hydrophober is 0.1% ~ 0.5% of rock mineral wool, glass or pearlstone dry weight.
9. application according to claim 7, is characterized in that: after described hydrophober dilution, direct spraying is on described rock mineral wool, glass or pearlstone, and in spraying process, the surface temperature control of rock mineral wool, glass or pearlstone is at 300 ~ 400 DEG C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105504336A (en) * | 2015-12-17 | 2016-04-20 | 苏州宏久航空防热材料科技有限公司 | Method for preparing hydrophobic melamine foam |
| CN108947275A (en) * | 2018-08-17 | 2018-12-07 | 北京新时代寰宇科技发展有限公司 | A kind of hydrophober and its preparation method and application that graphene oxide is modified |
| CN114133150A (en) * | 2021-12-31 | 2022-03-04 | 广州富思德化工科技有限公司 | High-flash-point environment-friendly emulsified oil and preparation method thereof |
| CN115353296A (en) * | 2022-08-30 | 2022-11-18 | 武汉思越新材料有限公司 | Water repellent composition and preparation method thereof |
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| CN103865474A (en) * | 2014-03-18 | 2014-06-18 | 江苏科幸新材料股份有限公司 | Preparation method of transparent pasty alcohol type organosilicone sealant |
| CN104446125A (en) * | 2014-12-07 | 2015-03-25 | 南雄鼎成化工有限公司 | Organosilicon waterproofing agent of solid powder and preparation method of organosilicon waterproofing agent |
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| CN103865474A (en) * | 2014-03-18 | 2014-06-18 | 江苏科幸新材料股份有限公司 | Preparation method of transparent pasty alcohol type organosilicone sealant |
| CN104446125A (en) * | 2014-12-07 | 2015-03-25 | 南雄鼎成化工有限公司 | Organosilicon waterproofing agent of solid powder and preparation method of organosilicon waterproofing agent |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105504336A (en) * | 2015-12-17 | 2016-04-20 | 苏州宏久航空防热材料科技有限公司 | Method for preparing hydrophobic melamine foam |
| CN108947275A (en) * | 2018-08-17 | 2018-12-07 | 北京新时代寰宇科技发展有限公司 | A kind of hydrophober and its preparation method and application that graphene oxide is modified |
| CN114133150A (en) * | 2021-12-31 | 2022-03-04 | 广州富思德化工科技有限公司 | High-flash-point environment-friendly emulsified oil and preparation method thereof |
| CN114133150B (en) * | 2021-12-31 | 2023-12-08 | 广州富思德化工科技有限公司 | High-flash-point environment-friendly emulsified oil and preparation method thereof |
| CN115353296A (en) * | 2022-08-30 | 2022-11-18 | 武汉思越新材料有限公司 | Water repellent composition and preparation method thereof |
| CN115353296B (en) * | 2022-08-30 | 2024-03-01 | 武汉思越新材料有限公司 | Water repellent composition and preparation method thereof |
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