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Functional particle and manufacturing method thereof

A manufacturing method and functional technology, applied in the field of functional microparticles and their manufacturing, can solve the problems of difficult functional substance encapsulation, exudation, poor productivity, etc.

Inactive Publication Date: 2013-01-02
MIKIRIKEN INDAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is a problem that the pores of the porous particles penetrate from the surface to the inside, and the functional substance filled in the pores tends to bleed out from the inside of the pores to the surface of the particles.
Therefore, there are problems in that it is difficult to uniformly and stably enclose functional substances in the pores of porous fine particles, and that productivity is poor due to an increase in the number of steps.

Method used

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  • Functional particle and manufacturing method thereof

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no. 1 approach

[0099] The method for producing functional fine particles according to the first embodiment includes a filling step and a bonding reaction step. Next, each step will be described.

[0100] A1: Filling process

[0101] In the filling process, first, a composition containing a functional substance and a capturing substance is prepared. In the first embodiment, the functional substance is paraffin, and the main chain portion of the capture substance is a hydrocarbon oligomer, so they have strong affinity and show compatibility. First, the paraffin used is brought into a liquid state at a temperature higher than its melting point, and the capture substance is mixed therein. The ratio of the capturing substance mixed with the paraffin as a functional substance should be an amount sufficient to capture the paraffin in the pores of the porous silica as the porous fine particles. The amount of paraffin wax filled in the pores of the porous silica is in the range of 1% by weight to ...

no. 2 approach

[0111] The method for producing functional microparticles according to the second embodiment is different from the above-mentioned first embodiment in that there is a capture substance addition step between the filling step and the bonding reaction step, and the filling of the functional substance and the addition of the capture substance are taken as separate steps. process. That is, in this second embodiment, there are a filling step, a capture substance addition step, and a bonding reaction step. Next, each step will be described.

[0112] A2: Filling process

[0113] In the filling step, the pores of the porous fine particles are filled with the functional substance. First, paraffin wax, which is a functional substance, is maintained at a temperature higher than its melting point to be in a liquid state. At this time, in order to improve the fluidity of the paraffin wax, it is preferable to set the temperature sufficiently higher than the melting point. The pores of th...

Embodiment 1

[0129] In Example 1, functional microparticles 1 using a latent heat storage substance as a functional substance were produced according to the production method of the above-mentioned first embodiment. In Example 1, porous silica (manufactured by Degsa Japan Corporation) having an average particle diameter of 100 μm was used as the porous fine particles. In addition, as the latent heat storage substance filled in the pores of porous silica, paraffin wax (Paraffin Wax-150, Nippon Seika Co., Ltd. manufacture). In addition, as the trapping material for trapping the paraffin in the pores of porous silica, a polyisobutylene oligomer having a polyisobutylene oligomer as the main chain portion and a polyisobutylene oligomer having methyldimethoxysilyl groups at both ends was used. Reactive polyisobutylene oligomer (Epion 100S, manufactured by Kaneka Co., Ltd.).

[0130] A1: Filling process

[0131] Heat 700g of paraffin wax to a temperature of 80°C above its melting point of 66°C...

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Abstract

The invention provides a functional particle and a manufacturing method thereof. The functional particle can be manufactured through a simple method. Functional material can be sealed in pores of the multi-hole particle uniformly and stably. And the functional material does not permeate to the surface of the particle from the inner part of the pore. The functional particle provided by the invention is provided with a plurality of multi-hole particles penetrating from the surface to the inner part; the functional material filled in the pores of the multi-hole particles and performing functions in the pores; and capturing material filled in the pores of the multi-hole particles and capturing the functional material into the pores stably. And the capturing material is provided with a main chain part having affinity to the functional material and an tail end part having affinity to the functional material. And the tail end part is provided with mutually bonded reaction groups.

Description

technical field [0001] The present invention relates to functional fine particles in which porous fine particles are filled with a functional substance and a method for producing the same. Background technique [0002] In the past, among the functional substances used for various purposes, many substances were difficult to handle directly due to their uses, such as substances that are easily vaporized, fluid substances such as liquids, or substances that show fluidity due to melting with temperature. Substance etc. For example, paraffin and other substances are latent heat storage substances that function by undergoing a phase transition between solid and liquid and repeating the heat storage and heat dissipation of latent heat accompanying the phase transition. change, so its handling is very difficult. [0003] Therefore, in order to facilitate the handling of these functional substances, functional fine particles in which pores of porous fine particles are filled with f...

Claims

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Application Information

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IPC IPC(8): C09K5/06
Inventor 堀公二西中幸一安田一诚中川庆诚
Owner MIKIRIKEN INDAL
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