CN1536032A - Nano silicon dioxide emulsion, its preparation method and application - Google Patents
Nano silicon dioxide emulsion, its preparation method and application Download PDFInfo
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- CN1536032A CN1536032A CNA031099157A CN03109915A CN1536032A CN 1536032 A CN1536032 A CN 1536032A CN A031099157 A CNA031099157 A CN A031099157A CN 03109915 A CN03109915 A CN 03109915A CN 1536032 A CN1536032 A CN 1536032A
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- water
- titanium dioxide
- nanometer titanium
- tensio
- emulsion
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- 239000000839 emulsion Substances 0.000 title claims abstract description 50
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000005543 nano-size silicon particle Substances 0.000 title claims abstract description 32
- 235000012239 silicon dioxide Nutrition 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 15
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims abstract description 10
- 239000004094 surface-active agent Substances 0.000 claims abstract description 8
- 239000007864 aqueous solution Substances 0.000 claims abstract description 5
- 239000013543 active substance Substances 0.000 claims description 34
- VDGJOQCBCPGFFD-UHFFFAOYSA-N oxygen(2-) silicon(4+) titanium(4+) Chemical compound [Si+4].[O-2].[O-2].[Ti+4] VDGJOQCBCPGFFD-UHFFFAOYSA-N 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 22
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 14
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 9
- 230000004048 modification Effects 0.000 claims description 9
- 238000012986 modification Methods 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 229960001866 silicon dioxide Drugs 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000003995 emulsifying agent Substances 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 239000003973 paint Substances 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 3
- 239000000084 colloidal system Substances 0.000 abstract 1
- 239000004530 micro-emulsion Substances 0.000 description 8
- 229920001214 Polysorbate 60 Polymers 0.000 description 7
- 238000002156 mixing Methods 0.000 description 5
- KBPLFHHGFOOTCA-UHFFFAOYSA-N caprylic alcohol Natural products CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000003125 aqueous solvent Substances 0.000 description 2
- 238000007385 chemical modification Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004064 cosurfactant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Paints Or Removers (AREA)
Abstract
The present invention discloses a nano silicon dioxide emulsion, its preparation method and application. Said emulsion contains nano silicon dioxide, silane coupling agent, surfactant and water. The described nano silicon dioxide and the described silane coupling agent are combined into a hydrophobic particle, and the described hydrophobic particles are covered with surfactant, and dispersed in the water. Its preparation method includes the following steps: adding water-soluble alcohol into the colloid solution of silicon dioxide in the water, then adding silane coupling agent and adding surfactant and water; another preparation method includes the following steps: adding water-soluble alcohol or aqueous solution of described alcohol into nano silicon dioxide gel, then adding silane coupling agent, surfactant and water. Said emulsion can be directly added into the water-based paint, and can be used for modifying water-based paint and improving various properties of the water-based paint.
Description
Technical field
The present invention relates to a kind of nanometer titanium dioxide silicon emulsion itself and manufacture method and purposes.
Background technology
In recent years, people have done a large amount of research to the preparation and the application of nano silicon, progressively maturation along with the nano silicon production technology, numerous research is tried hard to nano silicon is applied in the every field, but because the scattering problem of nano silicon, influenced giving full play to of modification efficiency and modifying function, also restricted further applying of nano silicon, the application of nano silicon in aqueous solvent is as follows substantially.
" fine chemistry industry " August 2002 (the 19 the 8th phase of volume), disclosed " the microemulsion preparation condition was to nanometer SiO
2The influence of particle morphology and size distribution " in the literary composition, a kind of nanometer SiO has been described
2Microemulsion, this microemulsion comprises tensio-active agent (TritonX-100), n-Octanol, cyclohexane, water, in oil-continuous phase, by tensio-active agent and cosurfactant is interfacial film, generate the w/o type microemulsion, therein, this microemulsion is as microreactor, by the nanometer SiO of tetraethoxy (TEOS) hydrolysis reaction
2Its method is that TritonX-100 and n-Octanol mix, and adds cyclohexane again, and ultra-sonic oscillation are even, become muddy milk sap, drip then to add water to obtain required W/O microemulsion, by dripping tetraethoxy, make its hydrolysis produce nanometer SiO in this microemulsion then
2, but this microemulsion is the water-in-oil structure, and that coated is nanometer SiO
2Aqueous gel can not directly be done nano silicon material modified of aqueous substance.
In addition, " New Chemical Materials " (the 22nd to 24 page of the 28 volume) discloses " nanometer SiO
XDissemination in coating " literary composition, document description nanometer SiO
xAfter surface hydrophobicity and the Facially amphilic modification (chemical modification), disperse to be applied in the water-borne coatings through physics.But this kind nanometer SiO
XThe method of modified aqueous paint has the following disadvantages: the one, and nanometer SiO
XBehind chemical modification and physically modified, improved nanometer SiO greatly
XDispersing property, but because nanometer SiO
XThe effect of interparticle Fan Dehuali and reuniting is restricted its dispersiveness; The 2nd, because nanometer SiO
XDispersed not enough, cause nanometer SiO
XThe increase of add-on is risen cost: the 3rd, and using enterprise need increase processing step in use, also will acquire its relative special-purpose equipment simultaneously.
Summary of the invention
The problem that quasi-solution of the present invention is determined provide a kind of can be nanometer SiO
XBe distributed in the aqueous solution, have the nanometer titanium dioxide silicon emulsion of good dispersion, and the using method of the preparation method of emulsion and this emulsion.
For achieving the above object, the present invention by the following technical solutions: a kind of nanometer titanium dioxide silicon emulsion, it contains nano silicon, silane coupling agent, tensio-active agent and water; Described nano silicon and described silane coupling agent are combined into a kind of hydrophobic type particulate, and described hydrophobic type particulate is coated by described tensio-active agent and is scattered in the water.
Described nanometer titanium dioxide silicone content is 5%～20%, and described surfactant content is 5%～15%, and the content of described silane coupling agent is 0.2%～15% of nano silicon amount.
Above-mentioned tensio-active agent is the emulsifying agent that is suitable for making O/w emulsion.
The manufacture method of above-mentioned nanometer titanium dioxide silicon emulsion:
A, in the colloidal solution of silicon-dioxide in water, add water-soluble alcohol;
B, in mixture a, add silane coupling agent;
C, in mixture b, add tensio-active agent and water.
The another kind of manufacture method of above-mentioned nanometer titanium dioxide silicon emulsion:
A: the aqueous solution that in the nano silicon gel, adds water-soluble alcohol or described alcohol;
B: in mixture a, add silane coupling agent;
C: in mixture b, add tensio-active agent and water.
The using method of aforementioned nanometer titanium dioxide silicon emulsion:, be used for the modification of water-borne coatings by it directly joins in the water-borne coatings with described nanometer titanium dioxide silicon emulsion.Its add-on is 1%～30% of a water-borne coatings.
Because nanometer titanium dioxide silicon emulsion of the present invention, it contains nano silicon, silane coupling agent, tensio-active agent and water; And nano silicon and described silane coupling agent be combined into a kind of hydrophobic type particulate, and described hydrophobic type particulate is coated by described tensio-active agent and is scattered in the water.This structure makes the hydrophobic nano silicon dioxide microparticle possess good hydrophilicity, has good dispersiveness and stable simultaneously.In addition, the manufacture method of aforementioned two kinds of nanometer titanium dioxide silicon emulsions is combined into a kind of hydrophobic type particulate for forming nano silicon and described silane coupling agent, described hydrophobic type particulate is coated by described tensio-active agent and the structure that is scattered in the water provides guarantee, add water-soluble alcohol in two kinds of methods, the quickening of the stable and speed of response that helps reacting.At last, because emulsion of the present invention is a kind of hydrophilic material, by joining water-borne coatings, make water-borne coatings obtain the modification of nano silicon, improve optical property, ageing resistance, the washing fastness of water-borne coatings and improve suspension stability, rheological and the self-cleaning of water-borne coatings.
Embodiment
One, nanometer titanium dioxide silicon emulsion
Nanometer titanium dioxide silicon emulsion of the present invention contains nano silicon, silane coupling agent, tensio-active agent and water; Described nano silicon and described silane coupling agent are combined into a kind of hydrophobic type particulate, and described hydrophobic type particulate is coated by described tensio-active agent and is scattered in the water.The nanometer titanium dioxide silicone content of described emulsion is 5%～20%, and described surfactant content is 5%～15%, and the content of described silane coupling agent is 0.2%～15% of nano silicon amount.Above-mentioned silane coupling agent is the material that a class has hydrophilic and oleophilic both sexes structure, and the group of its molecule one end can form firm chemical bond with the silanol radical reaction of nano silicon, and another group then has lipophilicity.Described silane coupling agent and silica bound are that a kind of hydrophobic type graininess exists, and silane coupling agent of the present invention is in the content of the silicon-dioxide emulsion add-on of assignment system emulsion silane coupling agent of the present invention only.Tensio-active agent of the present invention is the suitable emulsifying agent of producing O/w emulsion.Oleophilic group one end of tensio-active agent is adsorbed on the hydrophobic nano silicon dioxide microparticle that generates with the silane coupling agent reaction, forms a coating film, and it can be scattered in the aqueous solvent preferably, obtains emulsion of the present invention.
Silane coupling agent of the present invention and tensio-active agent are not limited to certain kind and model.For discussing conveniently, the following examples all illustrate with commercially available silane coupling A-187[γ-(2, the 3-glycidoxy) propyl trimethoxy silicane and tensio-active agent Tween 60 (polyoxyethylene 20 sorbitan monostearate).
Two, the manufacture method of nanometer titanium dioxide silicon emulsion of the present invention.
Embodiment 1
Get dioxide-containing silica and be 25% colloidal solution (silicon sol, have commercially available) 200 grams, add industrial ethylene glycol 100 grams, fit in mixture, after mixing, in said mixture, add A-187 silane coupling agent 5 grams, mix half an hour after, add Tween 60 tensio-active agents 50 grams, the total amount that adds water to emulsion then is 1000 grams.
As dioxide-containing silica in the colloidal solution is not 25%, then converts to take by weighing the colloidal solution that the silicon-dioxide net content equates.Following examples all with.
Embodiment 2
Get dioxide-containing silica and be 25% colloidal solution (silicon sol, have commercially available) 800 grams, add industrial ethylene glycol 100 grams, fit in mixture, after mixing, in said mixture, add A-187 silane coupling agent 20 grams, mix half an hour after, add Tween 60 tensio-active agents 50 grams, the total amount that adds water to emulsion then is 1000 grams.
Embodiment 3
Get dioxide-containing silica and be 25% colloidal solution (silicon sol, have commercially available) 400 grams, add industrial ethylene glycol 100 grams, fit in mixture, after mixing, in said mixture, add A-187 silane coupling agent 10 grams, mix half an hour after, add Tween 60 Surfactants 50 grams, the total amount that adds water to emulsion then is 1000 grams.
In embodiment 1-3; the tensio-active agent Tween 60 (polyoxyethylene 20 sorbitan monostearate) that adds changes any emulsifying agent that is suitable for making the oil-in-water structure into; its add-on can also be 100 grams or 150 grams, and other operation is constant, still can be protection scope of the present invention.
In the foregoing description, add tensio-active agent at last, the total amount that adds water to emulsion then is 1000 grams, can earlier tensio-active agent and water be mixed the back adding.
Embodiment 4
Get the gel that contains silicon-dioxide 50 grams, add industrial ethylene glycol 100 grams and 150 gram water, fit in mixture, after mixing, in said mixture, add A-187 silane coupling agent 5 grams, mix half an hour after, add tensio-active agent 50 grams, the total amount that adds water to emulsion then is 1000 grams.
Above-mentioned silica dioxide gel is made through gel or precipitin reaction by water glass or tetraethyl silicate or silicon sol.
According to embodiment 4, change the silica dioxide gel dosage, containing silicon-dioxide is 100 grams or 150 grams, and the tensio-active agent of adding changes 100 grams or 150 grams into, and other operation is constant, still can be embodiments of the invention.The last simultaneously tensio-active agent that adds, the total amount that adds water to emulsion then is 1000 grams, can earlier tensio-active agent and water mixing back be added.
According to embodiment 1-4, the industrial ethylene glycol that is added can substitute with the propyl alcohol of a great deal of or ethanol or Diethylene Glycol or propylene glycol.
The embodiment of nanometer titanium dioxide silicon emulsion using method of the present invention.
Embodiment 1
With the nanometer titanium dioxide silicon emulsion that obtains according to the method described above, get 10 grams and directly join in the 1000 gram water-borne coatingss, obtain the water-borne coatings after the modification after the stirring.
Embodiment 2
With the nanometer titanium dioxide silicon emulsion, get 100 grams and directly join in the 1000 gram water-borne coatingss, obtain the water-borne coatings after the modification after the stirring.
Embodiment 3
With the nanometer titanium dioxide silicon emulsion, get 300 grams and directly join in the 1000 gram water-borne coatingss, obtain the water-borne coatings after the modification after the stirring.
Record by experiment, the optical property of above-mentioned water-borne coatings after modification, ageing resistance, washing fastness, suspension stability and rheological all are improved.
Claims (12)
1, a kind of nanometer titanium dioxide silicon emulsion is characterized in that it contains nano silicon, silane coupling agent, tensio-active agent and water; Described nano silicon and described silane coupling agent are combined into a kind of hydrophobic type particulate, and described hydrophobic type particulate is coated by described tensio-active agent and is scattered in the water.
2, nanometer titanium dioxide silicon emulsion according to claim 1, it is characterized in that described nanometer titanium dioxide silicone content is 5%～20%, described surfactant content is 5%～15%, and the content of described silane coupling agent is 0.2%～15% of nano silicon amount.
3, nanometer titanium dioxide silicon emulsion according to claim 1 is characterized in that described tensio-active agent is the emulsifying agent that is suitable for making O/w emulsion.
4, the manufacture method of the described nanometer titanium dioxide silicon emulsion of claim 1-3:
A, in the colloidal solution of silicon-dioxide in water, add water-soluble alcohol;
B, in mixture a, add silane coupling agent;
C, in mixture b, add tensio-active agent and water.
5, the manufacture method of nanometer titanium dioxide silicon emulsion according to claim 1 is characterized in that tensio-active agent and water that described step c adds are the mixture of tensio-active agent and water.
6, according to the manufacture method of claim 4 or 5 described nanometer titanium dioxide silicon emulsions, the described water-soluble alcohol that adds in the nano silicon aqueous solution of its feature is ethanol or propyl alcohol or ethylene glycol or Diethylene Glycol or propylene glycol.
7, the another kind of manufacture method of the described nanometer titanium dioxide silicon emulsion of claim 1～3:
A: the aqueous solution that in the nano silicon gel, adds water-soluble alcohol or described alcohol;
B: in mixture a, add silane coupling agent;
C: in mixture b, add tensio-active agent and water.
8, the manufacture method of nanometer titanium dioxide silicon emulsion according to claim 7 is characterized in that the tensio-active agent and the water that add among the described step c are the mixture of tensio-active agent and water.
9,, be characterised in that the water-soluble alcohol that adds in the described nanometer titanium dioxide gel is ethanol or propyl alcohol or ethylene glycol or Diethylene Glycol or propylene glycol according to the manufacture method of claim 7 or 8 described nanometer titanium dioxide silicon emulsions.
10,, it is characterized in that described nano silicon gel is made through gel reaction by water glass or tetraethyl silicate or silicon sol according to the manufacture method of right 7 or 8 described nanometer titanium dioxide silicon emulsions.
11, the using method of the described nanometer titanium dioxide silicon emulsion of claim 1～3 is characterized in that it directly joins in the water-borne coatings, is used for the modification of water-borne coatings.
12, according to the using method of the described nanometer titanium dioxide silicon emulsion of claim 11, the add-on that it is characterized in that described nanometer titanium dioxide silicon emulsion is 1%～30% of a water-borne coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031099157A CN100339445C (en) | 2003-04-07 | 2003-04-07 | Nano silicon dioxide emulsion, its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031099157A CN100339445C (en) | 2003-04-07 | 2003-04-07 | Nano silicon dioxide emulsion, its preparation method and application |
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| Publication Number | Publication Date |
|---|---|
| CN1536032A true CN1536032A (en) | 2004-10-13 |
| CN100339445C CN100339445C (en) | 2007-09-26 |
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| CNB031099157A Expired - Fee Related CN100339445C (en) | 2003-04-07 | 2003-04-07 | Nano silicon dioxide emulsion, its preparation method and application |
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| DE102007023555A1 (en) * | 2007-05-21 | 2008-11-27 | Siemens Ag | Hydrophobic surface coating for electronic and electrical components as well as uses for it |
| WO2009006784A1 (en) * | 2007-07-06 | 2009-01-15 | Anji Microelectronics (Shanghai) Co., Ltd | A modified silicon dioxide sol, the manufacturing method and use of the same |
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