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Polymerizing process for preparing nano microcapsule by radiating emulsion

A technology of nano-microcapsules and emulsion polymerization, which is applied in the field of preparation of nano-microcapsules by radiation emulsion polymerization, which can solve the problems of difficult control of the reaction process, small molecular weight of polymers, and many condensed slags, and achieve simple equipment and production processes, high polymerization Molecular weight and low cost effect

Inactive Publication Date: 2002-08-14
南京中脉科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current chemical emulsion polymerization method used to produce nano-microcapsules by emulsion polymerization has high initiation temperature, high polymerization temperature, unstable reaction, difficult control of the reaction process, long reaction time, small molecular weight of the polymer, many condensed slags, and high yield. lower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Weigh the raw materials according to the composition ratio: oily capsule core 40Kg (accounting for 40% of the total mass of the system), monomeric styrene 10Kg, monomeric acrylonitrile 5Kg (the total mass of monomers accounts for 15% of the total mass of the system), emulsified Agent alkylphenol polyoxyethylene ether 2Kg, emulsifier Pingjia 1Kg (the total mass of the emulsifier accounts for 3% of the total mass of the system), and 42Kg of water (accounting for 42% of the total mass of the system) for subsequent use;

[0022] Put the weighed oily capsule core, monomer butyl acrylate, styrene, and acrylonitrile into a container and mix evenly, then add the weighed emulsifier alkylphenol polyoxyethylene ether, Pingajia, and water into the container;

[0023] 2. Put the stirrer with a homogenizer into the above container, start the stirring motor, adjust the speed, from slow to fast, and stir vigorously for 15-45 minutes;

[0024] 3. Put the contents of the above contain...

Embodiment 2

[0030] 1. Weigh the raw materials according to the composition ratio: oily capsule core 10Kg (accounting for 10% of the total mass of the system), monomer methyl methacrylate 15Kg, monomer styrene 20Kg, monomer acrylic acid 0.5Kg monomer butyl acrylate 4.5 Kg (the total mass of the monomer accounts for 40% of the total mass of the system), 5Kg of the emulsifier alkylphenol polyoxyethylene ether, 5Kg of the emulsifier Pingjia (the total mass of the emulsifier accounts for 10% of the total mass of the system), 40Kg of water (accounts for 40% of the total mass of the system) for standby;

[0031] Put the weighed oily capsule core, monomer methyl methacrylate, styrene, acrylic acid, and butyl acrylate into a container and mix evenly, then add the weighed emulsifier alkylphenol polyoxyethylene ether, Pingajia, Water is added to the container;

[0032] 2. Put the stirrer with a homogenizer into the above container, start the stirring motor, adjust the speed, from slow to fast, and ...

Embodiment 3

[0039] 1. Weigh the raw materials according to the composition ratio: oily capsule core 2Kg (accounting for 2% of the system mass), monomer butyl acrylate 1Kg, monomer styrene 3Kg, monomer acrylonitrile 1Kg (the total mass of the monomer accounts for the total mass of the system) 5%), emulsifier fatty alcohol sulfate 1Kg (emulsifier accounts for 1% of the total system mass), water 92Kg (accounts for 92% of the system total mass) for subsequent use;

[0040] Put the weighed oily capsule core, monomer butyl acrylate, styrene, and acrylonitrile into a container and mix evenly, then add the weighed emulsifier fatty alcohol sulfate salt and water into the container;

[0041] 2. Put the stirrer with homogenizer into the above container, start the stirring motor, adjust the speed, from slow to fast, stir vigorously for 15-20 minutes;

[0042] 3. Put the contents of the above container into a reaction kettle with stirring device, jacket cooling or spraying device, and put the reaction...

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PUM

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Abstract

A radiating polymerization process for preparing nano microcapsules includes such steps as proportioning core, monomer, emulsifier and water, mixing core with monomer, adding emulsifier and water, strong stirring for 15-45 min, high-energy ray radiating while aerating nitrogen gas for polymerizing reaction for 5-6 hr, filtering, and neutralizing to 5-7 of pH value with diluted ammonia solution.

Description

technical field [0001] The invention relates to a method for preparing nanometer microcapsules by radiation emulsion polymerization, which relates to a method for preparing nanometer microcapsules by radiation emulsion polymerization. Background technique [0002] Microcapsule technology is a technology that coats solid or liquid with film-forming materials to make them into tiny particles. The resulting tiny particles are called microcapsules. The particle size of microcapsules usually prepared is between 5 and 2000 μm, which is called micron microcapsules. Its larger particle size restricts the wider application of microencapsulation technology. With the development of science and technology, people use high technology to make the prepared microcapsules have a particle size between 1 and 1000 μm. Scientists define such microcapsules with a particle size in the nanometer range as nano-microcapsules. The current chemical emulsion polymerization method used to produce nano-...

Claims

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Application Information

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IPC IPC(8): C08F2/22C08F2/46
Inventor 王龙山曾仲韬张志成
Owner 南京中脉科技发展有限公司
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