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Preparation method of black polymer microspheres

A polymer, black technology, applied in the field of preparation of black polymer microspheres, can solve the problems of long production process time, unsuitable for large-scale production, easy generation of small particles of impurities, etc., to reduce the content of small particles of impurities, suitable for The effect of mass production and particle size uniformity improvement

Inactive Publication Date: 2019-11-26
SUZHOU KNOWLEDGE & BENEFIT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The application publication number is CN 104194003 A, and the application name is black monodisperse polymer microspheres. In the preparation method, black polymer microspheres with uniform particle size and excellent mechanical properties are prepared by two-step swelling method, but the swelling method takes a long time , in this process, it is easy to cause collision between particles and cause coagulation, and it is not easy to control the size of microspheres
[0004] Not only that, but the current preparation of black polymer microspheres has at least the following disadvantages: there are many uncontrollable factors in the production process, it is easy to generate small particles of impurities, the production process takes a long time, and it is not suitable for large-scale production

Method used

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  • Preparation method of black polymer microspheres

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preparation example Construction

[0026] The embodiment of the present invention provides a kind of preparation method of black polymer microsphere, and the preparation method of black polymer microsphere comprises the following steps:

[0027] S10. Add both the polymer seed and the initiator to the aqueous solution containing the stabilizer, stir evenly to form a seed suspension, wherein, by weight percentage, the weight of the polymer seed accounts for 10% to 20% of the weight of the seed suspension, and the initiator Accounting for 0.5-3% of the weight of the seed suspension,

[0028] S20. Add the black monomer containing double bonds and the ethylenic monomer into the alcohol solvent containing the stabilizer, stir evenly to form a monomer suspension; wherein, by weight percentage, the weight of the black monomer is the weight of the ethylenic monomer 10-50% of the monomer suspension, the ethylenic monomer accounts for 20-45% by weight of the monomer suspension,

[0029] S30. Under the constant temperatur...

Embodiment 1

[0043] Add 150 g of polymer seeds (its particle size is 6 microns, CV=3%), 5 g of azobisisobutylimidazoline hydrochloride and 10 g of dextrin into a first container filled with deionized water, and stir well to form seeds The suspension, wherein, in terms of weight percentage, the weight of the polymer seed accounts for 15% of the weight of the seed suspension, and the azobisisobutylimidazoline hydrochloride accounts for 0.5% of the weight of the seed suspension. Add 34g of double bond-containing black monomer and 330g of methyl methacrylate into the alcohol solvent containing stabilizer in the second container with ethanol, stir evenly to form a monomer suspension;

[0044] The ethylenic monomer constituted 25% by weight of the monomer suspension. Wherein, the black monomer with double bond is the black monomer containing non-benzene ring carbon-carbon double bond prepared by nigrosine through steps of acylation reaction.

[0045] A nozzle was attached to the second containe...

Embodiment 2

[0048] Add 150g of polymer seed (its particle size is 4.6 micron, CV=3%), 5g of azobisisobutylimidazoline hydrochloride and 10g of dextrin into the first container with deionized water, stir well to form a seed The suspension, wherein, in terms of weight percentage, the weight of the polymer seed accounts for 15% of the weight of the seed suspension, and the azobisisobutylimidazoline hydrochloride accounts for 0.5% of the weight of the seed suspension. Add 20g of double bond-containing black monomer and 180g of methyl methacrylate into the alcohol solvent containing stabilizer in the second container with ethanol, stir evenly to form a monomer suspension;

[0049] The ethylenic monomer represented 31% by weight of the monomer suspension. Wherein, the black monomer with double bond is the black monomer containing non-benzene ring carbon-carbon double bond prepared by nigrosine through steps of acylation reaction.

[0050] A nozzle with a hole diameter of 10 μm was installed on...

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Abstract

The invention discloses a preparation method of black polymer microspheres. The preparation method comprises following steps: a polymer seed and an initiator are added into an aqueous solution containing a stabilizing agent, and uniform stirring is carried out so as to obtain a seed suspension solution; a black monomer containing double bonds and an alkene monomer are added into an alcohol solution containing a stabilizing agent, and uniform stirring is carried out so as to obtain a monomer suspension solution; at 70 to 80 constant temperature conditions, the monomer suspension solution is dispersed in the seed suspension solution drop by drop using a spray nozzle, after adding of the monomer suspension solution, reaction is carried out for another 30min so as to obtain a black polymer microsphere suspension solution; and then washing and drying are carried out to obtain uniform black polymer microspheres.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a preparation method of black polymer microspheres. Background technique [0002] In order to obtain a clearer display effect during the production of liquid crystal displays, it is necessary to uniformly disperse black polymer microspheres with suitable size, uniform particle size, high compressive strength and elasticity in the liquid crystal material. [0003] The application publication number is CN 104194003 A, and the application name is black monodisperse polymer microspheres. In the preparation method, black polymer microspheres with uniform particle size and excellent mechanical properties are prepared by two-step swelling method, but the swelling method takes a long time , in this process, it is easy to cause collision between particles and cause coagulation, and it is not easy to control the size of microspheres. [0004] Not only that, but the current preparation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F212/08C08F220/60C08F222/38C08F2/18
CPCC08F2/18C08F212/08C08F220/14C08F220/60C08F222/38
Inventor 阳承利
Owner SUZHOU KNOWLEDGE & BENEFIT TECH CO LTD