CN109171082A - A kind of preparation method for cutting thickening liquid - Google Patents
A kind of preparation method for cutting thickening liquid Download PDFInfo
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- CN109171082A CN109171082A CN201811235892.8A CN201811235892A CN109171082A CN 109171082 A CN109171082 A CN 109171082A CN 201811235892 A CN201811235892 A CN 201811235892A CN 109171082 A CN109171082 A CN 109171082A
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Abstract
The invention discloses a kind of preparation methods for cutting thickening liquid, polyethylene glycol, modified manometer silicon dioxide core-shell particles are added in above-mentioned mixed solution under stirring and ultrasonication, stirring is with ultrasonic disperse 1-2 hours until forming uniform lotion, lotion is put into vacuum oven and stands 24 hours, to remove the bubble in dispersion and obtain shear thickening liquid.Modified manometer silicon dioxide core-shell particles are NiAl-LDH/SiO2 nano particle.The present invention, as dispersed phase, is coated on the surface SiO2 by NiAl-LDH layered double hydroxide and forms a polymeric layer in SiO2 microsphere surface using modified manometer silicon dioxide core-shell particles.Polymer oxide layer significantly weakens electrostatic interparticle repulsive interaction to a certain extent, and SiO2 nucleocapsid ion can be leaned on mutually closer under shear action, forms bigger Particle Cluster, thus generates stronger shear thickening effect.
Description
Technical field
The present invention relates to a kind of preparation methods for cutting thickening liquid.
Background technique
Cutting thickening liquid (shearthickeningfluid, STF) is a kind of novel functional material, is that a kind of solid-liquid is mixed
The nanoparticle solvent of conjunction state, usually by nanosized SiO_2: as dispersed phase, polar solvent is (polyethylene glycol, polypropylene glycol, sweet
Oil etc.) it is used as decentralized medium, constitute nanosized SiO_2 dispersion.Under high speed impact, huge variation occurs for apparent viscosity for it,
Even by liquid phase Cheng Tongxiang, very strong shock resistance can be showed；After impact force is eliminated, and change from solid phase rapidly
At liquid phase.Currently, shear thickening liquid is gradually introduced into individual protection plate armour, the key technology of application is first to match
Produce the dispersion with first shear shinning shear thickening rheological property again, it is therefore an objective to guarantee that human body normal activity does not thicken,
And thickened immediately when there is the impact such as cutter, bullet, shock resistance effect is played, keeps individual protection armor facing and flexibility simultaneous
It is standby；And the bigger shock resistance of its viscosity is better.If shear thickening liquid is made to play the above performance, nanosized SiO_2 must be stablized
It is scattered in decentralized medium.But current SiO2 has small-size effect and skin effect, and surface has accumulated a large amount of positive and negative electricity
Lotus, the shape irregular of nano particle, causes the aggregation of charge in this way.Nano particle has very high chemical activity, table
Reveal strong skin effect, it is easy to aggregation occurs and reaches stable state, thus generation of reuniting, and then reduce cutting for liquid
Cut thickening effect.
Summary of the invention
In view of the above existing problems in the prior art, the present invention provides a kind of preparation methods for cutting thickening liquid, can keep away
Exempt from conventional SiO2 agglomeration, the liquid of preparation has preferable shear thickening effect.
To achieve the goals above, the technical solution adopted by the present invention is that: a kind of preparation method for cutting thickening liquid, poly- second
Glycol, modified manometer silicon dioxide core-shell particles are added in above-mentioned mixed solution under stirring and ultrasonication, stirring and ultrasound
Dispersion 1-2 hours until the uniform lotion of formation, lotion is put into vacuum oven and stands 24 hours, to remove dispersion
In bubble and obtain shear thickening liquid,.
A kind of 2 treating agent for papermaking wastewater according to claim 1, which is characterized in that modified manometer silicon dioxide core
Shell particles the preparation method comprises the following steps:
Nano-silicon dioxide particle, filtering are successively sufficiently washed using the hydrochloric acid solution of 0.1mol/L, deionized water, vacuum is done
It is dry, obtain acidification nano grade silica particles；
Step 2 obtains the addition of SiO2 powder containing sodium hydroxide 0.4mol's and carbamide 0.1mol after taking the above-mentioned pickling of 500g
Ultrasound 30min in mixed ammonium/alkali solutions, above-mentioned mixed solution are vigorously stirred lower addition 50mL to containing nickel nitrate 0.75mol in room temperature
Suspension is obtained in the salting liquid of aluminum nitrate 0.25mol；
The sodium hydroxide solution of 0.2mol is added to PH=10.5 that solution is adjusted in above-mentioned suspension by step 3, then 60
Solution is cooled to room temperature DEG C after crystallization 6 hours, is washed with deionized and is centrifuged three times, at 60 DEG C it is dry for 24 hours, obtain NiAl-
LDH/ SiO2 nanocomposite.
The utility model has the advantages that
The present invention, as dispersed phase, passes through NiAl-LDH layered bi-metal hydrogen-oxygen using modified manometer silicon dioxide core-shell particles
Compound is coated on the surface SiO2 and forms a polymeric layer in SiO2 microsphere surface.Polymer oxide layer is to a certain extent substantially
Degree weakens electrostatic interparticle repulsive interaction, and SiO2 nucleocapsid ion can be leaned on mutually closer under shear action, is formed bigger
Particle Cluster, thus generate stronger shear thickening effect.
Specific embodiment
The present invention is further explained in the light of specific embodiments.
Embodiment 1
A kind of preparation method for cutting thickening liquid, 1000 parts of polyethylene glycol, 600 parts of modified manometer silicon dioxide core-shell particles,
It is added in above-mentioned mixed solution under stirring and ultrasonication, stirs and ultrasonic disperse 1-2 hours up to forming uniform lotion, it will
Lotion is put into vacuum oven and stands 24 hours, to remove the bubble in dispersion and obtain shear thickening liquid.Preparation
Shear thickening liquid peak viscosity be 1298.2Pas.
Modified manometer silicon dioxide core-shell particles the preparation method comprises the following steps:
Nano-silicon dioxide particle, filtering are successively sufficiently washed using the hydrochloric acid solution of 0.1mol/L, deionized water, vacuum is done
It is dry, obtain acidification nano grade silica particles；
Step 2 obtains the addition of SiO2 powder containing sodium hydroxide 0.4mol's and carbamide 0.1mol after taking the above-mentioned pickling of 500g
Ultrasound 30min in mixed ammonium/alkali solutions, above-mentioned mixed solution are vigorously stirred lower addition 50mL to containing nickel nitrate 0.75mol in room temperature
Suspension is obtained in the salting liquid of aluminum nitrate 0.25mol；
The sodium hydroxide solution of 0.2mol is added to PH=10.5 that solution is adjusted in above-mentioned suspension by step 3, then 60
Solution is cooled to room temperature DEG C after crystallization 6 hours, is washed with deionized and is centrifuged three times, at 60 DEG C it is dry for 24 hours, obtain NiAl-
LDH/ SiO2 nano particle, that is, modified manometer silicon dioxide core-shell particles.
Comparative example 1
A kind of preparation method for cutting thickening liquid, 1000 parts of polyethylene glycol, are stirring and are surpassing 600 parts of nano-silicon dioxide particles
It is added in above-mentioned mixed solution under sound effect, stirring is with ultrasonic disperse 1-2 hours until the uniform lotion of formation, lotion is put into
24 hours are stood in vacuum oven, to remove the bubble in dispersion and obtain shear thickening liquid.The shearing of preparation increases
Magma peak viscosity is 498.5Pas.
Comparative example 2
It is with 1 difference of embodiment,
Modified manometer silicon dioxide core-shell particles the preparation method comprises the following steps:
Step 1, take 500g SiO2 powder be added the mixed ammonium/alkali solutions containing sodium hydroxide 0.4mol and carbamide 0.1mol in surpass
Sound 30min, above-mentioned mixed solution are vigorously stirred lower addition 50mL to containing nickel nitrate 0.75mol and aluminum nitrate in room temperature
Suspension is obtained in the salting liquid of 0.25mol；
The sodium hydroxide solution of 0.2mol is added to PH=10.5 that solution is adjusted in above-mentioned suspension by step 2, then 60
Solution is cooled to room temperature DEG C after crystallization 6 hours, is washed with deionized and is centrifuged three times, at 60 DEG C it is dry for 24 hours, obtain modified Nano
Silica core shell particles.The shear thickening liquid peak viscosity of this comparative example preparation is 532.7Pas.
Comparative example 3
It is with embodiment difference,
Modified manometer silicon dioxide core-shell particles the preparation method comprises the following steps:
Nano-silicon dioxide particle, filtering are successively sufficiently washed using the hydrochloric acid solution of 0.1mol/L, deionized water, vacuum is done
It is dry, obtain acidification nano grade silica particles；
Step 2 obtains the addition of SiO2 powder containing sodium hydroxide 0.4mol's and carbamide 0.1mol after taking the above-mentioned pickling of 500g
Ultrasound 30min in mixed ammonium/alkali solutions, above-mentioned mixed solution are vigorously stirred lower addition 50mL to containing aluminum nitrate 0.25mol in room temperature
Salting liquid in obtain suspension；
The sodium hydroxide solution of 0.2mol is added to PH=10.5 that solution is adjusted in above-mentioned suspension by step 3, then 60
Solution is cooled to room temperature DEG C after crystallization 6 hours, is washed with deionized and is centrifuged three times, at 60 DEG C it is dry for 24 hours, obtain NiAl-
LDH/ SiO2 nano particle, that is, modified manometer silicon dioxide core-shell particles.The shear thickening liquid peak viscosity of this comparative example preparation
For 503.4Pas.
Comparative example 4
It is with 1 difference of embodiment,
In modified manometer silicon dioxide core-shell particles preparation method: nickel nitrate 0.25mol, aluminum nitrate 0.75mol, remaining with reality
As applying example 1.The shear thickening liquid peak viscosity of this comparative example preparation is 492.6Pas.
Comparative example 5
It is with 1 difference of embodiment,
In modified manometer silicon dioxide core-shell particles preparation method: nickel nitrate 0.5mol, aluminum nitrate 0.5mol, remaining with implementation
As example 1.The shear thickening liquid peak viscosity of this comparative example preparation is 508.3Pas.
Claims (2)
1. a kind of preparation method for cutting thickening liquid, which is characterized in that polyethylene glycol and modified manometer silicon dioxide core-shell particles
It is stirring and is being added in above-mentioned mixed solution under ultrasonication, stirring and ultrasonic disperse 1-2 hours up to forming uniform lotion,
Lotion is put into vacuum oven and stands 24 hours, to remove the bubble in dispersion and obtain shear thickening liquid.
2. a kind of preparation method for cutting thickening liquid according to claim 1, which is characterized in that modified manometer silicon dioxide
Core-shell particles the preparation method comprises the following steps:
Nano-silicon dioxide particle, filtering are successively sufficiently washed using the hydrochloric acid solution of 0.1mol/L, deionized water, vacuum is done
It is dry, obtain acidification nano grade silica particles；
Step 2 obtains the addition of SiO2 powder containing sodium hydroxide 0.4mol's and carbamide 0.1mol after taking the above-mentioned pickling of 500g
Ultrasound 30min in mixed ammonium/alkali solutions, above-mentioned mixed solution are vigorously stirred lower addition 50mL to containing nickel nitrate 0.75mol in room temperature
Suspension is obtained in the salting liquid of aluminum nitrate 0.25mol；
The sodium hydroxide solution of 0.2mol is added to PH=10.5 that solution is adjusted in above-mentioned suspension by step 3, then 60
Solution is cooled to room temperature DEG C after crystallization 5 hours, is washed with deionized and is centrifuged three times, at 60 DEG C it is dry for 24 hours, obtain NiAl-
LDH/ SiO2 nano particle, that is, modified manometer silicon dioxide core-shell particles.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110271239A (en) * | 2019-05-14 | 2019-09-24 | 福洹体育用品（苏州）有限公司 | A kind of anticollision protecting ware for sports and its preparation and application |
| CN111925772A (en) * | 2020-07-31 | 2020-11-13 | 航天特种材料及工艺技术研究所 | Silicon dioxide composite material, application and preparation method thereof |
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| CN1303885A (en) * | 1999-10-25 | 2001-07-18 | 上海绿纳科技有限公司 | Preparation of nanometer composite particles-organic polymer mixed composite system |
| CN101413210A (en) * | 2008-11-12 | 2009-04-22 | 东华大学 | Method for carbon fiber surface modification of plasma coated with silicon dioxide by plasma treatment |
| CN102220688A (en) * | 2011-05-13 | 2011-10-19 | 东华大学 | Three dimensional orthogonal woven fabric stab-resistant material and preparation method thereof |
| CN108221383A (en) * | 2018-01-26 | 2018-06-29 | 江南大学 | A kind of preparation method of low-temperature type shear thickening liquid and application |
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2018
- 2018-10-24 CN CN201811235892.8A patent/CN109171082A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303885A (en) * | 1999-10-25 | 2001-07-18 | 上海绿纳科技有限公司 | Preparation of nanometer composite particles-organic polymer mixed composite system |
| CN101413210A (en) * | 2008-11-12 | 2009-04-22 | 东华大学 | Method for carbon fiber surface modification of plasma coated with silicon dioxide by plasma treatment |
| CN102220688A (en) * | 2011-05-13 | 2011-10-19 | 东华大学 | Three dimensional orthogonal woven fabric stab-resistant material and preparation method thereof |
| CN108221383A (en) * | 2018-01-26 | 2018-06-29 | 江南大学 | A kind of preparation method of low-temperature type shear thickening liquid and application |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110271239A (en) * | 2019-05-14 | 2019-09-24 | 福洹体育用品（苏州）有限公司 | A kind of anticollision protecting ware for sports and its preparation and application |
| CN111925772A (en) * | 2020-07-31 | 2020-11-13 | 航天特种材料及工艺技术研究所 | Silicon dioxide composite material, application and preparation method thereof |
| CN111925772B (en) * | 2020-07-31 | 2023-06-16 | 航天特种材料及工艺技术研究所 | Silicon dioxide combined material, application and preparation method thereof |
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