CN101058764A - Method of preparing molecular sieve/functional prepolymer composite suspension decentralization electrorheological liquid - Google Patents
Method of preparing molecular sieve/functional prepolymer composite suspension decentralization electrorheological liquid Download PDFInfo
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- CN101058764A CN101058764A CN 200710022655 CN200710022655A CN101058764A CN 101058764 A CN101058764 A CN 101058764A CN 200710022655 CN200710022655 CN 200710022655 CN 200710022655 A CN200710022655 A CN 200710022655A CN 101058764 A CN101058764 A CN 101058764A
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- sieve
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Abstract
The invention discloses a manufacturing method of molecular sieve or functional prepolymer composite dispersing electrorheological liquid, which comprises the following steps: getting molecular sieve or functional prepolymer composite material by in-situ polymerization of guiding polarity prepolymer on porous matrix of the molecular sieve; getting electrorheological liquid by dispersing the composite materials in the dispersing agent. The invention is characterized by the following: adsorbing a good deal of small molecule monomers by porous air-entrapping structure; making the small molecule monomers polymerization reaction in the proper condition; adding interface binding force between the polymeric matrix and two phases of molecular sieve by entangling polymeric molecular chain in the molecular sieve hole with the polymeric matrix molecular chain and entangling polymer network in the molecular chain hole with inorganic network. The invention provides a good stability and response effect, which reduces the mechanical abrasiveness.
Description
Technical field
The present invention relates to a kind of heterogeneous electro-rheologic fluid material, particularly the preparation method of molecular sieve and the compound heterogeneous electrorheological fluid of function prepolymer.
Background technology
Electrorheological fluid (Electrorheological Fluids is called for short ERF) is a kind of intelligent material that has development prospect and engineering using value.Because characteristics such as electrorheological fluid has that response speed is exceedingly fast, viscosity is adjustable, liquid-solid transformation, required energy consumption are low, can monitor in real time, thereby for electricity of new generation-machine coupled system provides excellent interface, and might cause revolutionary variation such as many departments such as automotive industry, hydraulic industry, machinery manufacturing industry, sensor technologies.Thereby electrorheological fluid research has become the important topic of current smart material and structure area research.In the widespread use of electrorheological fluid, it is found that existing electro-rheologic fluid material at the application requiring that is difficult to reach specific function on the engineering on the performance, compound disperse phase electrorheological fluid develops rapidly just in this case.So-called composite particles carries out surface modification or coats other materials some solid phase particles exactly, makes granule performance and surface property that very big difference be arranged.Thereby this class composite particles can carry out the electrorheological fluid that the performance cutting design of solid phase particles obtains better performance more easily, comprises the density of regulating particle itself improving settling property, and the load flexible chain is with the surface hardness of adjusting particle etc.
Summary of the invention
Purpose of the present invention is exactly for a kind of suspended dispersed electro-rheologic fluid material of stable performance is provided, from improving the angle of disperse phase character, set up a carrier that the polar monomer polymeric is loose porous, the synthetic recombination current becomes the outer perforation mutually of material hole endoporus, for the stability that improves ERF provides good condition.
The technical scheme that the object of the invention realizes, the preparation method of molecular sieve/sieve/functional prepolymer composite suspension decentralization electrorheological liquid, with molecular sieve as porous matrix material, utilize the loose and porous structure of molecular sieve, guiding polarity prepolymer carries out in-situ polymerization on porous matrix, obtain molecular sieve/functional prepolymer matrix material, matrix material is distributed in the dispersion medium material obtains electrorheological fluid.
Described molecular sieve comprises the mesoporous silicate molecular sieve in single aperture, as MCM-41, MCM-48, MCM-50 etc.; Heteroatoms replaces mesoporous silicate molecular sieve, as Al-MCM-41, TS-1, Ti-MSU etc.
Described functional prepolymer comprises vinyl cyanide, esters of acrylic acid, vinyl ester, amides unsaturated monomer etc.
Described dispersion medium material comprises: silicone oil, Witco 70, chlorinated paraffinic oil, vegetables oil, mineral oil, lubricant.
Described matrix material accounts for the 5-30% (mass ratio) of current liquid.
Technology advanced person of the present invention, the preparation method is simple, compared with prior art, has the following advantages and effect:
1. the vesicular structure of molecular sieve provides a polymerizing template for the function prepolymer, utilize in-situ polymerization to obtain a kind of molecular sieve/function prepolymer matrix material, because the porousness of molecular sieve, add that polymer density is much smaller than inorganics, the stability of matrix material in dispersion medium is improved greatly.
2. ERF of the present invention does not need the activation of activator such as water can produce the ER effect, and can finish under electric field action from liquid state to solid-state transformation mutually.This can overcome that moisture ERF is perishable, operating temperature range is narrow, ER effect and temperature and the big defective of water content dependency.
3. the present invention prepares ERF and also has the very little characteristics of leakage current density, can obviously reduce watt consumption.Through test, when strength of electric field reached 4kV/mm, leakage current was zero.
Description of drawings
Fig. 1 is the stability figure of molecular sieve of the present invention/functional prepolymer composite electrorheological fluid;
Fig. 2 is the stress scans graphic representation of molecular sieve of the present invention/functional prepolymer composite electrorheological fluid;
Embodiment
Embodiment one
Under strong basicity low-temperature atmosphere-pressure condition, be the silicon source with positive tetraethyl orthosilicate, amino dodecane is that template synthesizes pure silicon Si-HMS molecular sieve.The 0.5g molecular sieve is joined in the acetum of 75ml 5%, stir 0.5h down at 46 ℃, ultrasonic 0.5h, make molecular sieve fully be distributed in the acetum, add the 9.5ml vinyl cyanide then, add Potassium Persulphate (6.24g) aqueous solution of 10ml behind the thorough mixing, splash into the aqueous solution of 10ml sodium bisulfite (3.12g) at last, continue down stirred for several hour at 45 ℃, finish reaction.Regulate the pH value of resultant with sodium hydroxide solution, be neutral, suction filtration then, and successively water, ethanol, DMF, washing with alcohol, final sample is in 75 ℃ of following vacuum-dryings, the back of grinding, sieve is distributed to by certain mass ratio (5-30%) and is made into electrorheological fluid in the dispersion medium, stable state rheological property and the dynamic rheological property performance of electrorheological fluid of having tested this.
Embodiment two
Under strong basicity low-temperature atmosphere-pressure condition, be the silicon source with positive tetraethyl orthosilicate, Tai-Ace S 150 is the aluminium source, amino dodecane is that template synthesizes the Al-HMS molecular sieve.The 0.5g molecular sieve is joined in the acetum of 75ml 5%, stir 0.5h down at 46 ℃, ultrasonic 0.5h, make molecular sieve fully be distributed in the acetum, add the 9.5g vinyl cyanide then, add Potassium Persulphate (6.24g) aqueous solution of 10ml behind the thorough mixing, splash into the aqueous solution of 10ml sodium bisulfite (3.12g) at last, continue to stir 5h down at 46 ℃, finish reaction.Regulate the pH value of resultant with sodium hydroxide solution, be neutral, suction filtration then, and successively water, ethanol, DMF, washing with alcohol, final sample is in 75 ℃ of following vacuum-dryings, grinding, the back of sieving are distributed to by certain mass ratio (5-30%) and are made into electrorheological fluid in the dispersion medium, have tested the stable state rheology and the dynamic rheological property performance of this electrorheological fluid.
Embodiment three
With positive tetraethyl orthosilicate is that silicon source, Triton X-100 OP-10 and hexadecyl trimethyl ammonium bromide are that template, sodium hydroxide are that alkali source has synthesized molecular sieve (MCM-41).The 0.25g molecular sieve is joined in the tetrahydrofuran solution of 20ml acrylamide (3.5g), stir 1h down at 70 ℃, molecular sieve is fully soaked in THF solution, ultra-sonic dispersion 0.5h, add an amount of 0.05g Diisopropyl azodicarboxylate then, be cooled to 65 ℃, continue to stir 2 hours, finish reaction, obtain a kind of steady suspension.After the dimethyl silicone oil of adding 50g stirred in above-mentioned reactant, solvents tetrahydrofurane was removed in underpressure distillation, obtains stable molecular sieve/PAM-silicone oil suspension.Change the silicone oil amount that adds, obtain the electrorheological fluid of different concns, tested the stable state of this electrorheological fluid, dynamic and creep and creep recovery performance thereof.
Claims (5)
1. the preparation method of molecular sieve/sieve/functional prepolymer composite suspension decentralization electrorheological liquid, it is characterized in that with molecular sieve as porous matrix material, utilize the loose and porous structure of molecular sieve, guiding polarity prepolymer carries out in-situ polymerization on porous matrix, obtain molecular sieve/functional prepolymer matrix material, matrix material is distributed to obtains electrorheological fluid in the dispersion medium.
2. according to the preparation method of claims 1 described molecular sieve/sieve/functional prepolymer composite suspension decentralization electrorheological liquid, it is characterized in that described molecular sieve comprises the mesoporous silicate molecular sieve in single aperture: MCM-41, MCM-48, MCM-50; Heteroatoms replaces mesoporous silicate molecular sieve: Al-MCM-41, TS-1, Ti-MSU.
3. according to the preparation method of claims 1 described molecular sieve/sieve/functional prepolymer composite suspension decentralization electrorheological liquid, it is characterized in that described functional prepolymer comprises vinyl cyanide, esters of acrylic acid, vinyl ester, amides unsaturated monomer.
4. according to the preparation method of claims 1 described molecular sieve/sieve/functional prepolymer composite suspension decentralization electrorheological liquid, it is characterized in that described dispersion medium comprises silicone oil, Witco 70, chlorinated paraffinic oil, vegetables oil, mineral oil, lubricant.
5. according to the preparation method of claims 1 described molecular sieve/sieve/functional prepolymer composite suspension decentralization electrorheological liquid, it is characterized in that the mass percent that described matrix material accounts for electrorheological fluid is 5-30%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104000738A (en) * | 2014-05-28 | 2014-08-27 | 吉林省登泰克牙科材料有限公司 | Composite dental resin material containing macropore molecular sieves |
| CN110055125A (en) * | 2019-05-31 | 2019-07-26 | 青岛科技大学 | A kind of hud typed composite material by electric current of anisotropic TS-1 molecular sieve/TiOx nano becomes liquid and preparation method thereof |
| CN114981392A (en) * | 2020-05-12 | 2022-08-30 | 株式会社Ihi | Gasified gas production apparatus |
-
2007
- 2007-05-21 CN CN 200710022655 patent/CN101058764A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104000738A (en) * | 2014-05-28 | 2014-08-27 | 吉林省登泰克牙科材料有限公司 | Composite dental resin material containing macropore molecular sieves |
| CN104000738B (en) * | 2014-05-28 | 2016-08-03 | 吉林省登泰克牙科材料有限公司 | Dentistry compound resin material containing large pore molecular sieve |
| CN110055125A (en) * | 2019-05-31 | 2019-07-26 | 青岛科技大学 | A kind of hud typed composite material by electric current of anisotropic TS-1 molecular sieve/TiOx nano becomes liquid and preparation method thereof |
| CN110055125B (en) * | 2019-05-31 | 2021-10-22 | 青岛科技大学 | Anisotropic TS-1 molecular sieve/titanium oxide nano core-shell composite electrorheological fluid and preparation method thereof |
| CN114981392A (en) * | 2020-05-12 | 2022-08-30 | 株式会社Ihi | Gasified gas production apparatus |
| CN114981392B (en) * | 2020-05-12 | 2024-05-17 | 株式会社Ihi | Gasification gas manufacturing apparatus |
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Open date: 20071024 |