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A kind of preparation method of polymer blend microsphere

A blend and microsphere technology, which is applied in the field of preparing polymer blend microspheres and polystyrene-polyester blend microspheres, can solve the problem of difficult preparation of polycondensation polymers and vinyl monomer polymers Problems such as the blend microspheres, etc., to achieve the effect of good interphase interface bonding strength

Active Publication Date: 2019-05-17
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a new method for preparing polymer blend microspheres, especially the method for preparing polystyrene-polyester blend microspheres, which solves the problem that the current preparation method of polymer blend microspheres uses organic Solvent or difficult to prepare blend microspheres of polycondensation polymer and vinyl monomer polymer

Method used

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  • A kind of preparation method of polymer blend microsphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Dissolve 5 grams of polyester (ES-403, produced by Skybonsk Chemical (Suzhou) Co., Ltd.) in 20 grams of styrene, and place it in a 250 three-ml three-necked bottle;

[0018] (2) Add 0.35 g of azobisisobutyronitrile, start stirring, and raise the temperature to 55 ℃;

[0019] (3) Add a compound emulsifier composed of 0.4 g Span 80 and 3.2 g Tween 80;

[0020] (4) After stirring for 20 minutes, add 100 ml of deionized water with 0.3 g of PVA1788, 0.03 g of sodium lauryl sulfate, and 0.2 g of potassium chloride, while increasing the stirring rate to 1500r / min;

[0021] (5) After 30 minutes, reduce the low stirring rate to 600 rpm; increase the temperature to 75 ℃ and react for 5 hours, then decrease the temperature to room temperature, and stop the stirring;

[0022] (6) The reaction product is centrifuged, washed, and dried to obtain a finished product.

[0023] Test the finished product of Example 1 and get the following results:

[0024] (1) The glass transition temperature Tg ...

example 2

[0032] (1) Dissolve 9 grams of polyester (ES-403, produced by Skybonsk Chemical (Suzhou) Co., Ltd.) in 40 grams of styrene, and place in a 500 ml three-necked bottle;

[0033] (2) Add 0.7 g of azobisisobutyronitrile, start stirring, and raise the temperature to 55 ℃;

[0034] (3) Add a compound emulsifier composed of 0.6 g Span 80 and 3.6 g Tween 80;

[0035] (4) After stirring for 25 minutes, add 200 ml of deionized water with 0.6 g of PVA1788, 0.05 g of sodium lauryl sulfate, and 0.4 g of potassium chloride, while increasing the stirring rate to 1300r / min;

[0036] (5) After 35 minutes, reduce the low stirring rate to 550 rpm; increase the temperature to 76 ℃ and react for 5 hours, then decrease the temperature to room temperature, and stop the stirring;

[0037] (6) Centrifugal separation, washing and drying of the reaction products to obtain finished products.

[0038] The particle size and distribution of the microspheres were tested on the finished product of Example 2 and the foll...

example 3

[0041] (1) Dissolve 6 grams of polyester (ES-403, produced by Skybonsk Chemical (Suzhou) Co., Ltd.) in 30 grams of styrene, and place it in a 500 ml three-necked bottle;

[0042] (2) Add 0.5 g of azobisisobutyronitrile, start stirring, and raise the temperature to 60 ℃;

[0043] (3) Add a compound emulsifier composed of 0.5 g Span 80 and 3.8 g Tween 80;

[0044] (4) After stirring for 20 minutes, add 200 ml of deionized water with 0.5 g of PVA1788, 0.05 g of sodium lauryl sulfate, and 0.4 g of potassium chloride, while increasing the stirring rate to 1400 rpm;

[0045] (5) After 30 minutes, reduce the low stirring rate to 500 rpm; increase the temperature to 78 ℃ and react for 5 hours, then decrease the temperature to room temperature and stop stirring;

[0046] (6) Centrifugal separation, washing and drying of the reaction products to obtain finished products.

[0047] The particle size and distribution of microspheres were tested on the finished product of Example 3 and the following r...

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Abstract

The invention provides a method for preparing polymer blend microspheres, and particularly discloses a method for preparing polystyrene-polyester blend microspheres. In the polystyrene-polyester blend microspheres prepared with the method, the two polymers form an incompatibility blend system and have mutual-effect chain segments, and the blend microspheres have the independent characteristics of the two polymers and the good interphase interface bonding strength at the same time. The microspheres prepared with the method are spherical or irregularly-shaped near spherical, and the size of the microspheres ranges from several microns to tens of microns. The method for preparing the microspheres includes the steps that amorphous-state linear saturated polyester is dissolved into a styrene monomer to form an even solution, then a surfactant and water are added for phase inversion, an oil-in-water system is formed in the mode that styrene monomer liquid drops dissolved with polyester molecules are dispersed into water phases, a styrene polymerization reaction is further completed, and then the polystyrene-polyester blend microspheres are obtained. By means of the method, the problem that in a current preparing method for polymer blend microspheres, an organic solvent is used, or blend microspheres of a polycondensation polymer and a vinyl monomer polymer are not prone to preparing is solved.

Description

Technical field [0001] The present invention provides a method for preparing polymer blended microspheres, particularly a method for preparing polystyrene-polyester blend microspheres. The prepared microspheres are spherical or irregularly shaped like spheres, and the size of the microspheres is In the range of several micrometers to several tens of micrometers, the molecular chains of polystyrene and polyester in the microspheres constitute incompatible blends. It belongs to the technical field of polymer material preparation. Background technique [0002] Blending polymer resins is a quick and effective way to obtain new materials. The application of polymer microsphere materials involves coatings, adhesives, paper surface coatings, cosmetics, plastic and rubber product additives, drug slow release, protein separation and other fields and emerging 3D printing materials. Microspheres made by mixing two or more polymers can achieve complementary performance. The current prepar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/02C08F212/08C08F2/30B01J13/14
CPCB01J13/14C08F2/30C08F283/02C08F212/08
Inventor 段玉丰
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY