Method for preparing organic polymer through particle phase polymerization reaction

A polymerization reaction and polymer technology, which is applied in the field of preparing organic polymers by atomizing the polymerization raw materials to realize the particle phase polymerization reaction, can solve the problems of the degree of polymerization reaction and the restriction of reaction efficiency, and achieve wide contact interface, sufficient material reaction, Good heat transfer effect

Inactive Publication Date: 2011-10-12
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the interfacial polymerization reaction is limited by the degree of bonding between the phase interfaces of the heterogeneous reaction system, the degree of polymerization reaction and the reaction efficiency are restricted.

Method used

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  • Method for preparing organic polymer through particle phase polymerization reaction
  • Method for preparing organic polymer through particle phase polymerization reaction
  • Method for preparing organic polymer through particle phase polymerization reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] First, 0.12 g of ferric chloride initiator and 100 g of pyrrole distilled under reduced pressure were dissolved in 200 ml of deionized water to prepare a homogeneous pyrrole raw material solution.

[0036] Then the prepared pyrrole raw material solution is carried out according to the following steps:

[0037] (1) Put the prepared pyrrole raw material solution into the particle generator, and control the temperature of the pyrrole raw material solution in the particle generator to -5°C through the cooling tank outside the particle generator to prevent the pyrrole monomer from being oxidized Or a self-polymerization reaction occurs; use the ultrasonic atomizer equipped at the bottom of the particle generator to atomize the pyrrole raw material solution into suspended particles with a size of 1 μm by using an ultrasonic oscillation frequency of 2.0 MHz;

[0038] (2) Open the control valve of the carrier gas bottle, under the drive of the nitrogen gas with a pressure of 0....

Embodiment 2

[0041] First, 0.253g of benzoyl peroxide initiator was dissolved in 235g of methyl methacrylate distilled under reduced pressure to prepare a homogeneous methyl methacrylate raw material solution.

[0042] Then the prepared methyl methacrylate raw material solution is carried out according to the following steps:

[0043] (1) Put the prepared methyl methacrylate raw material solution into the particle generator, and control the temperature of the methyl methacrylate raw material solution in the particle generator to 0°C through the cooling tank provided outside the particle generator, To prevent the methyl methacrylate monomer from being oxidized or self-polymerized; use the ultrasonic atomizer equipped at the bottom of the particle generator to atomize the methyl methacrylate raw material solution into a size of 0.5 μm with an ultrasonic oscillation frequency of 2.4 MHz of suspended particles;

[0044] (2) Open the control valve of carrier gas cylinder, under the drive of th...

Embodiment 3-19

[0047] The polymerization reaction of embodiment 3-19 all adopts one-stage polymerization reaction, and its reaction step is with embodiment 1 or 2. Among them, one kind of polymerized monomer is used in embodiment 3-9, two kinds of polymerized monomers are used in embodiment 10-15, and three kinds of polymerized monomers are used in embodiment 16-19. Table 1 shows the composition and atomization conditions of different polymerized raw materials , carrier gas flow, polymerization reaction temperature and polymerization reaction time and other conditions, the organic polymer prepared.

[0048] Table I

[0049]

[0050]

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Abstract

The invention relates to a method for preparing an organic polymer through a particle phase polymerization reaction. The particle phase polymerization reaction comprises the following steps of: atomizing at least one or more than one polymerization raw material respectively to form suspended particulates with the particle sizes of between 0.5 and 50mu m, bringing one or more than one kind of suspended particulates into a reaction zone formed by serially connecting reaction bins by the airflow with the pressure of between 0.01 and 1.0MPa, and performing one or more than one stage of polymerization reaction to form the organic polymer, wherein the reaction temperature is -15 to 270 DEG C. The method for preparing the organic polymer through the particle phase polymerization reaction is different from the traditional polymerization reaction method; the method is efficient, reliable, simple and easy, the cost is low, and the applicable range is wide; an organic polymer product prepared bythe method has the advantages that: a unit sequence has a controllable structure, the molecular weight is high, the molecular weight distribution is uniform, the monodispersity is high, and the variety is rich; and the product can meet the needs of multi-component composite materials and special shaped materials.

Description

technical field [0001] The invention relates to a method for preparing organic polymers by particle phase polymerization, in particular to a method for preparing organic polymers by atomizing polymerization raw materials to realize particle phase polymerization. Background technique [0002] Generally, the polymerization methods used for the preparation of organic polymers include: bulk polymerization, solution polymerization and interfacial polymerization methods, etc. Different polymerization methods have different advantages, but at the same time, they also have their own shortcomings. [0003] Among them, the bulk polymerization refers to the polymerization reaction initiated by the monomer itself by a small amount of initiator or light, heat, radiation energy, etc. without adding a solvent or other dispersion medium. The composition and reaction equipment of the polymerization reaction system are simple, and the purity of the polymerization product is high. However, si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08F120/14C08F2/00C08F112/08C08G73/02C08F120/44C08F114/06C08G69/16C08F136/06C08F118/08C08F212/08C08F220/44C08G63/16C08G63/78C08G69/28C08F212/10C08F220/14C08F236/10C08F283/04C08F265/04C08F257/02C08F265/08C08F279/02C08F285/00
Inventor 徐卫林王罗新梁桂杰顾绍金叶青
Owner WUHAN TEXTILE UNIV
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