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Hollow micro-capsule which has damping enhancing effect and is partially filled with oligomer viscous-flow liquid and method for preparing hollow micro-capsule

A technology of oligomers and microcapsules, which is applied in the field of damping materials, can solve problems such as excessive thickness of damping materials and inflexible shapes of damping layers, and achieve the effects of improved damping performance, stable structure, and uniform particle size distribution

Inactive Publication Date: 2016-07-06
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention utilizes microcapsule technology to prepare cavity microcapsules partially filled with oligomer viscous liquid. According to different microcapsule structure requirements, the microcapsules can be coated with a metal layer or a polymer-inorganic hybrid layer to form multiple Layered microcapsule structure, the cavity microcapsules with a single-layer or double-layer microcapsule wall structure partially filled with oligomer viscous liquid are dispersed in polymer coatings as micro-dampers to improve the damping performance of the coating itself, which can Solve the shortcomings of ordinary damping materials that are too thick and the shape of the damping layer is not flexible

Method used

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  • Hollow micro-capsule which has damping enhancing effect and is partially filled with oligomer viscous-flow liquid and method for preparing hollow micro-capsule
  • Hollow micro-capsule which has damping enhancing effect and is partially filled with oligomer viscous-flow liquid and method for preparing hollow micro-capsule
  • Hollow micro-capsule which has damping enhancing effect and is partially filled with oligomer viscous-flow liquid and method for preparing hollow micro-capsule

Examples

Experimental program
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Effect test

Embodiment 1

[0020] 1. Dissolve 2.0g gum arabic in 180mL deionized water to make a water phase solution; dissolve 5.50g isophorone diisocyanate and 2.0g silicone rubber SYLGARD184 in 10mL organic solvent ethyl acetate to make an oil phase solution ; Dissolve 2.553g of diethylenetriamine in 20mL of deionized water to obtain an aqueous solution of multiple hydrophilic reactants;

[0021] 2. Put the oil phase solution prepared in step 1 into the water phase solution, high-speed shear emulsification for 5min (2000rpm), move the emulsion to a 500mL three-necked bottle, mechanically stir at 500rpm, add the aqueous solution of diethylenetriamine dropwise at a constant speed at room temperature, React for 30 minutes; raise the temperature of the water bath to 60°C, and react for 3 hours; let the product stand overnight, filter, wash with water, and blow dry at 70°C for 24 hours to obtain cavity microcapsule powder partially filled with silicone rubber viscous liquid, and the product quality is abou...

Embodiment 2

[0024]Change the silicone rubber in Example 1 to palm oil, and the others are the same as in Example 1. The obtained microcapsules have a good shape, a particle diameter of 10 μm, a polymer layer thickness of 20 nm, a metal layer thickness of 100 nm, and coated methyl silicone oil. 30% of the microcapsule cavity volume.

Embodiment 3

[0026] Add 0.07 g of dispersed hydrophilic silica nanoparticles with a particle size of 8 nm to the water phase in Example 1, and the others are the same as in Example 1 to obtain microcapsules with a good shape and a particle size of 12 μm. The thickness of the chemical layer is 30nm, the thickness of the metal layer is 100nm, and the coated silicon rubber accounts for 20% of the cavity volume of the microcapsule.

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Abstract

The invention discloses a hollow micro-capsule which has a damping enhancing effect and is partially filled with oligomer viscous-flow liquid and a method for preparing the hollow micro-capsule, and belongs to the technical field of damping materials.The hollow micro-capsule and the method have the advantages that the hollow micro-capsule which is partially filled with the oligomer viscous-flow liquid is prepared by the aid of micro-capsule technologies, metal layers or polymer-inorganic hybrid layers further can be coated on the outside of the micro-capsule according to different requirements of micro-capsule structures, and accordingly multilayer micro-capsule structures can be formed; the hollow micro-capsule which has single-layer or double-layer micro-capsule wall structures and is partially filled with the oligomer viscous-flow liquid can be used as a miniature damper to be scattered in polymer paint, accordingly, the damping performance of the paint can be enhanced, shortcomings of excessive thicknesses of common damping materials, inflexible shapes of damping layers and the like can be overcome, and the damping performance of the paint can be enhanced to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of damping materials, and in particular relates to a hollow microcapsule partially filled with oligomer viscous liquid and a preparation method thereof, which has a damping lifting effect. Background technique [0002] Damping materials are a class of functional materials that convert mechanical energy into thermal energy and dissipate them. Therefore, the principle of converting kinetic energy into thermal energy during deformation can be used to reduce the resonance amplitude in the system and increase the fatigue life. There are many kinds of damping materials, among which the polymer damping material is made of high molecular polymer as the base material resin, which can reduce vibration, sound insulation and have a certain degree of sealing. Polymer damping materials can be widely used in vibration and noise reduction of vehicles, ships, aircraft and various machinery. [0003] In order to improve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/16B01J13/22B01J13/02
CPCB01J13/16B01J13/02B01J13/22
Inventor 崔占臣史笑雨史作森
Owner JILIN UNIV