Monodisperse polymer microsphere for dry spraying machine

A polymer, monodisperse technology, applied in the field of materials, can solve the problems of uneven box thickness, uneven background color, black spots, etc., and achieve the effect of preventing storage agglomeration, low water content, and low water content

Active Publication Date: 2020-04-17
镇江爱邦电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although the preparation technology of polymer microspheres has made great progress in recent years, there are still many problems in the use of many electronic information industries such as domestic liquid crystal displays, such as running powder, powder clusters, uneven box thickness, uneven background color, Dark spots etc.

Method used

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  • Monodisperse polymer microsphere for dry spraying machine
  • Monodisperse polymer microsphere for dry spraying machine
  • Monodisperse polymer microsphere for dry spraying machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of seed microsphere emulsion: 0.12g of sodium chloride (chemically pure, China Pharmaceutical Group Shanghai Chemical Reagent Company), 15g of deblocked styrene (chemically pure, American Sigma-Aldrich Company), 100mL of deionized water (self-made) and 75mL of 0.002g / mL of refined potassium persulfate (chemically pure, Sigma-Aldrich, USA) solution were ultrasonically dispersed in a closed reaction kettle, ultrasonically and stirred for 30min under nitrogen protection, and then heated to 70°C for constant temperature polymerization for 18h , and then repeatedly centrifuged and washed the obtained particles with deionized water several times to obtain the seed polymer microspheres, and finally redispersed the above seed microspheres into deionized water, and blown nitrogen gas for 30 minutes to remove the residual styrene monomer, A bulb emulsion of 1.22 μm can be obtained.

[0042] The surface of the seed microspheres prepared by this method is smooth, wi...

Embodiment 2

[0051] (1) Preparation of seed microsphere emulsion: Ultrasonic dispersion of the refined potassium persulfate solution of 0.14g of sodium chloride, 20g of dehindered styrene, 150mL of deionized water and 100mL of 0.002g / mL in a closed reaction kettle, Ultrasound and stirring for 30 minutes under the protection of nitrogen, then the temperature was raised to 70°C for constant temperature polymerization for 18 hours, and then the obtained particles were repeatedly centrifuged and washed with deionized water for several times to obtain seed polymer microspheres, and finally the above seed microspheres were redispersed in the deionized In deionized water, nitrogen gas was blown in for 30 minutes to remove residual styrene monomer, and a bulb emulsion of 1.90 μm was obtained.

[0052] (2) Preparation of monodisperse polymer microspheres: Weigh 30 g of 0.25% sodium dodecylbenzenesulfonate aqueous solution and 0.6 times of seed liquid dibutyl phthalate to ultrasonically disperse them...

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Abstract

The invention discloses a monodisperse polymer microsphere for a dry spraying machine, which takes a monodisperse polymer microsphere as a matrix, the surface of the microsphere is connected with a silane coupling agent for chemical modification, and finally, the material is subjected to atomization treatment by spray drying equipment. The microspheres are high in crosslinking degree and high in pressure resistance, so that the excellent thickness of a liquid crystal box of a liquid crystal display can be kept, and due to the fact that one end of the connected silane coupling agent contains ahydrophobic group, the hydrophilicity of the spheres is reduced, and agglomeration is effectively improved; meanwhile, due to special chemical modification, the surface of the ball body is smoother, sufficient and uniform electric quantity is guaranteed, and spraying uniformity is achieved. The residual water on the surfaces of the spheres is reduced through atomization drying, and particle aggregation in the storage process is effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a monodisperse polymer microsphere for a dry spray machine and a preparation method thereof. Background technique [0002] Since the advent of liquid crystal display, it has developed rapidly with its advantages of stable and non-flickering image, high picture quality, low working voltage, no radiation hazard, light and thin quality, and pure flat large-area display. There are many types of liquid crystal display devices. Although the structure of different types and uses of liquid crystal devices will be different, the basic structure is similar. The main structure is that there is a liquid crystal material between two transparent thin plates, and the sphere is a spacer material. By changing the additional voltage, the arrangement structure or phase of the molecules of the liquid crystal material changes, and the optical properties such as refraction, scattering, and absorptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F257/02C08F212/36C08F8/42C09D151/00
CPCC08F257/02C08F212/36C08F8/42C09D151/003
Inventor 周际东耿瑞峰孙玉
Owner 镇江爱邦电子科技有限公司
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