CN101224376B - Microcapsule for recycling volatile organic matter - Google Patents
Microcapsule for recycling volatile organic matter Download PDFInfo
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- CN101224376B CN101224376B CN200710176372XA CN200710176372A CN101224376B CN 101224376 B CN101224376 B CN 101224376B CN 200710176372X A CN200710176372X A CN 200710176372XA CN 200710176372 A CN200710176372 A CN 200710176372A CN 101224376 B CN101224376 B CN 101224376B
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- microcapsules
- silicone oil
- silicon oil
- organic matter
- volatile organic
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Abstract
The invention relates to a micro-capsule used for recycling volatile organic matter, in particular to a micro-capsule covering silicon oil. The wall material of the micro-capsule is made of macromolecule material which can be dissolved into N, N-dimethylformamide or methylene chloride or formic acid, core material is silicon oil, and the mass ratio between the silicon oil and the wall material is1 : 0.1 to 10. The invention is suitable for recycling volatile organic matter from gas or water, such as benzene, toluene, dimethylbenzene, ethyl acetate, butyl acetate, heptane, hexane, octane, carbon trichloride and dichloroethane. The materials realize the pre-distribution of the silicon oil and overcome the defect of the silicon oil that due to bigger viscidity, the silicon oil is not easy to be taken as an absorbing agent, and then the invention can be easily used for the existing industrial equipment. The recommended granule diameter range of the micro-capsule for use is from 1Mum to 4mm.
Description
Technical field
The present invention relates to a kind of volatile organic matter recycled materials in water or the gas that are used for, especially relate to the microcapsules that macromolecular material coats silicone oil.
Background technology
Often contain volatile organic matter in industrial wastewater and the waste gas, even if under low concentration, they to the harm of environment and human body also clearly.For the volatile organic matter in the waste water, processing method commonly used at present has: bioanalysis, oxidizing process, absorption method and extraction etc.For the volatile organic matter in the waste gas, commonly used have oxidizing process, absorption process and an absorption method.Bioanalysis and oxidizing process can be destroyed volatile organic matter, but can not recycle useful component wherein.Absorption method can be handled the pollutant of low concentration, but adsorption capacity is often less.Extraction can efficiently be handled the waste water of high concentration, but lower for the low concentration wastewater treatment effeciency.The absorption rule usually is subjected to the restriction of system rerum natura, and a big difficulty is exactly that existing absorption equipment is difficult to use full-bodied absorbent, and uses the often easy volatilization loss of low viscous absorbent.
Silicone oil is that a veriety is numerous, the organosilicon product that has wide range of applications.It has lot of advantages: high-low temperature resistant, anti-oxidant, flash-point is high, volatility is little, good insulating, that metal is not had burn into is nontoxic etc. to human body.Research shows that also silicone oil has good assimilation effect for the volatile organic matter of multiple low pole.Because the viscosity height of silicone oil is difficult to directly apply to common absorption or extraction equipment.
Microcapsules technology is a kind of technology that the world today develops swift and violent, of many uses and comparative maturity.The process of preparation microcapsules is called microencapsulation.It is that solid, liquid or gas are wrapped in the small capsule.The wall shell of sealing usefulness is called the wall material, and the capsule-core that is wrapped is called core.In recent years, microcapsules technology had obtained increasingly extensive application in fields such as chemical industry, metallurgy, medicine, food, fertilizer and feeds.
Summary of the invention
The objective of the invention is in order to solve silicone oil owing to the high problem that is difficult to use of viscosity, providing a kind of is the microcapsules of core with silicone oil, thereby effectively is used for the recovery of volatile organic matter.
Technical scheme of the present invention is as follows:
A kind of microcapsules that are used for the volatile organic matter recovery are made up of wall material and core, it is characterized in that: described wall material adopts and is dissolved in N, and the macromolecular material of dinethylformamide, carrene or formic acid, described core are silicone oil.
The mass ratio of silicone oil of the present invention and wall material is 1: 0.1～10, and the particle diameter of microcapsules is at 1 μ m-4mm.
The invention still further relates to described silicone oil microcapsules and be used for the purposes that volatile organic matter reclaims.
Beneficial effect of the present invention be can oneself viscosity is very high silicone oil be applied to existing industrial equipment very easily, thereby high-efficiency environment friendly ground processing volatile organic matter matter more.
Description of drawings
Fig. 1 is a kind of structural representation that is used for the microcapsules of volatile organic matter recovery.
Wherein: 1-wall material; 2-silicone oil.
The specific embodiment
The microcapsules that are used for the volatile organic matter recovery provided by the invention are made up of wall material and core, and the wall material adopts and is dissolved in N, and the macromolecular material of dinethylformamide, carrene or formic acid, core are silicone oil.The mass ratio of silicone oil and wall material is 1: 0.1～10, and the particle diameter of microcapsules is at 1 μ m-4mm.
The preparation method of microcapsules can adopt one-step method or two-step method.One-step method comprises solvent extraction, solvent evaporation method, spray-drying and polymerization.Its common feature is that the wall material solidifies and the core coating is finished synchronously.Two-step method comprises infusion process, ultrasonic method etc., and its characteristics are that at first the wall material solidifies the empty ball of preparation microcapsules, carry out core again and coat.The microcapsules silicone oil for preparing and the mass ratio of wall material are 0.1～10.The particle size range that microcapsules are recommended is at 1 μ m-4mm.The microcapsules that prepare can be used for the recovery of benzene,toluene,xylene, ethyl acetate, butyl acetate, heptane, hexane, octane, carbon trichloride and dichloroethanes.
The present invention is used for volatile organic matter to reclaim, its principle is: formed microcapsules though macromolecular material coats silicone oil, but volatile organic matter still can be diffused into microcapsules inside gradually and be dissolved in the silicone oil, so can keep the ability of silicone oil to the absorption or the extraction of organic substance.And on macroscopic view, used the process that just can contact original gas-liquid contact with liquid liquid after the microcapsules to become gas-solid contact and the liquid-solid process that contacts respectively, thereby can be applied to existing industrial equipment easily.
Embodiment 1
The microcapsules of dimethicone.The wall material of these microcapsules is polysulfones, and core is a dimethicone.
The preparation method: get the 1g polysulfones, the 1g dimethicone is dissolved in the 10ml carrene and forms emulsion.This emulsion is shaken up back adding 500ml contain in the water of 1% gelatin high-speed stirred.In the whipping process, carrene volatilizees gradually, and polysulfones solidify to form the microcapsules that coat dimethicone.This microcapsules particle diameter is distributed between the 1 μ m-800 μ m.Silicone oil polysulfones mass ratio is 0.95 in the microcapsules.
Embodiment 2:
The microcapsules of methyl phenyl silicone oil.The wall material of these microcapsules is polystyrene, and core is a methyl phenyl silicone oil.
The preparation method: get the 1g polystyrene, the 0.12g methyl phenyl silicone oil is dissolved in 12mlN, forms emulsion in the dinethylformamide.After this emulsion shaken up, extrude with syringe needle and to splash in the coagulating bath of forming by 200ml ethanol and 500ml water.N, dinethylformamide are solidified rapidly and bathe dissolving, and polystyrene just solidify to form the microcapsules that coat methyl phenyl silicone oil.This microcapsules particle diameter is distributed between the 500 μ m-4mm.Silicone oil polysulfones mass ratio is 0.1 in the microcapsules.
Embodiment 3:
The microcapsules of Methyl Hydrogen Polysiloxane Fluid.The wall material of these microcapsules is polyamide, and core is a Methyl Hydrogen Polysiloxane Fluid.
The preparation method: get the 10g polyamide, the 10g Methyl Hydrogen Polysiloxane Fluid is dissolved in the 80ml formic acid and forms emulsion.This emulsion is shaken up the back adopt the spray-drying ejection to form drop, formic acid volatilization back polyamide solidify to form the microcapsules that coat Methyl Hydrogen Polysiloxane Fluid.The particle diameter of these microcapsules is distributed between the 1 μ m-300 μ m.Silicone oil polysulfones mass ratio is 0.98 in the microcapsules.
Embodiment 4:
The microcapsules of alcohol radical modified silicon oil.The wall material of these microcapsules is polymer of styrene and divinylbenzene, and core is an alcohol radical remodeling silicone oil.
The preparation method: get 2g styrene, the 0.2g divinylbenzene, the 0.03g benzoyl peroxide, 0.3g alcohol radical modified silicon oil mixes forming solution.Above-mentioned solution disperseed to join in the aqueous solution that 200ml contains 1% polyvinyl alcohol forming emulsion with film, under nitrogen protection, be warmed up to 90 ℃, be incubated 4 hours.Styrene and divinylbenzene polymerization gradually form the microcapsules that coat alcohol radical remodeling silicone oil.The particle diameter of these microcapsules is distributed between the 1 μ m-400 μ m.The mass ratio of silicone oil and styrene and divinyl benzene copolymer is 0.65 in the microcapsules.
Embodiment 5:
The microcapsules of amino-modified silicone oil.The wall material of these microcapsules is polyacrylonitrile, and core is an amino-modified silicone oil.
Preparation method: get polyacrylonitrile 0.3g, be dissolved in the 10mlN-methyl pyrrolidone and form solution, will change solution and from syringe needle, extrude and splash in the coagulating bath of forming by 100ml ethanol and 500ml water.The N-methyl pyrrolidone is solidified rapidly bathes dissolving, and polyacrylonitrile just solidify to form the empty ball of microcapsules.With the empty ball of polysulfones filter take out after, 120 ℃ dry 5 hours down, then the empty ball of polyacrylonitrile is immersed in the 50ml amino-modified silicone oil, ultrasonic 10min just can make the microcapsules of polyacrylonitrile coating amino-modified silicone oil.This microcapsules particle diameter is distributed between the 500 μ m-4mm.Silicone oil polyacrylonitrile mass ratio is 10 in the microcapsules.
Embodiment 6:
The microcapsules of carboxy-modified silicone oil.The wall material of these microcapsules is polystyrene, and core is carboxy-modified silicone oil.
Preparation method: at first buy the expanded polystyrene resin, then this resin of 2g is immersed in the carboxy-modified silicone oil of 50ml, soak 72h, just can make the microcapsules that polysulfones coats amino-modified silicone oil.This microcapsules particle diameter is distributed between the 100 μ m-600 μ m.Silicone oil polystyrene mass ratio is 0.8 in the microcapsules.
Claims (1)
1. the silicone oil microcapsules are used for the purposes that volatile organic matter reclaims, described silicone oil microcapsules are made up of wall material and core, wherein said wall material adopts can be dissolved in N, the macromolecular material of dinethylformamide, carrene or formic acid, described core is a silicone oil, the mass ratio of silicone oil and wall material is 1: 0.1～10, and the particle diameter of microcapsules is at 1 μ m-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710176372XA CN101224376B (en) | 2007-10-26 | 2007-10-26 | Microcapsule for recycling volatile organic matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710176372XA CN101224376B (en) | 2007-10-26 | 2007-10-26 | Microcapsule for recycling volatile organic matter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101224376A CN101224376A (en) | 2008-07-23 |
| CN101224376B true CN101224376B (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710176372XA Expired - Fee Related CN101224376B (en) | 2007-10-26 | 2007-10-26 | Microcapsule for recycling volatile organic matter |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030990B (en) * | 2009-09-28 | 2012-12-12 | 复旦大学 | Silicone oil microcapsule with slow-release characteristics and preparation method thereof |
| CN105688767B (en) * | 2016-03-08 | 2018-04-06 | 中山大学惠州研究院 | A kind of preparation method of vanillic aldehyde microcapsules |
| CN109397444A (en) * | 2018-10-16 | 2019-03-01 | 福建农林大学 | A kind of fibre board use microcapsule-type fire retardant and preparation method thereof |
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2007
- 2007-10-26 CN CN200710176372XA patent/CN101224376B/en not_active Expired - Fee Related
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| CN101224376A (en) | 2008-07-23 |
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Granted publication date: 20100901 Termination date: 20211026 |