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Method for preparing polymer blend microspheres

A technology of blends and microspheres, which is applied in the fields of preparing polystyrene-polyester blend microspheres and polymer blending microspheres, can solve the problem that it is difficult to prepare polycondensation polymers and vinyl monomer polymers. problems such as blending microspheres, etc., to achieve the effect of good interphase interface bonding strength

Active Publication Date: 2017-06-13
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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  • Method for preparing polymer blend microspheres

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-ml three-neck bottle;

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

[0019] (3) Add a compound emulsifier consisting of 0.4 grams of Span80 and 3.2 grams of Tween 80;

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

[0021] (5) After 30 minutes, reduce the low stirring rate to 600 rpm; raise the temperature to 75 °C for 5 hours, cool down to room temperature, and stop stirring;

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

[0023] Example 1 finished product etc. are tested and obtain following result:

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

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 it in a 500 ml three-necked bottle;

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

[0034] (3) Add a compound emulsifier consisting of 0.6 grams of Span80 and 3.6 grams of Tween 80;

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

[0036] (5) After 35 minutes, reduce the low stirring rate to 550 rpm; raise the temperature to 76 °C for 5 hours, cool down to room temperature, and stop stirring;

[0037] (6) The reaction product is centrifuged, washed and dried to obtain the finished product.

[0038] Example 2 finished product is carried out microsphere particle size and distribution test and obtains following result:

[...

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-neck bottle;

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

[0043](3) Add a compound emulsifier consisting of 0.5 grams of Span80 and 3.8 grams of Tween 80;

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

[0045] (5) After 30 minutes, reduce the low stirring rate to 500 rpm; raise the temperature to 78 ℃ for 5 hours, cool down to room temperature, and stop stirring;

[0046] (6) The reaction product is centrifuged, washed and dried to obtain the finished product.

[0047] Example 3 finished product is carried out microsphere particle size and distribution test and obtains following result:

[0048]...

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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 invention provides a method for preparing polymer blended microspheres, especially a method for preparing polystyrene-polyester blend microspheres, the prepared microspheres are spherical or irregularly shaped spherical, and the size of the microspheres is between In the range of a few microns to tens of microns, the polystyrene and polyester molecular chains inside the microspheres form an incompatible blend. It belongs to the technical field of polymer material preparation. Background technique [0002] Blending polymer resins is a fast and efficient 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 composed of two or more polymers can achieve complementary properties. The current preparation methods are mainly d...

Claims

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Application Information

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Patent Type & Authority Applications(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
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