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Microsphere powder of micron-scale highly cross-linked polymer and preparation method and application thereof

A high-crosslinking, polymer technology, applied in the field of polymer polymerization, can solve the problems of damage to the physical properties of the formed body, and achieve the effects of good sphericity, good transparency and low sulfate content

Active Publication Date: 2020-09-08
广州五行材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with the molded article obtained by mixing such sulfate-containing polymer microspheres with polyester resin is that the physical properties of the molded article are significantly impaired due to the sulfate remaining in the powder promoting the hydrolysis of the polyester resin.

Method used

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  • Microsphere powder of micron-scale highly cross-linked polymer and preparation method and application thereof
  • Microsphere powder of micron-scale highly cross-linked polymer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. 0.2 part of sodium dodecyl diphenyl ether disulfonate and 0.8 part of polyethylene glycol are added to 492 parts of deionized water and dissolved completely to obtain sodium dodecyl diphenyl ether disulfonate and polyethylene glycol solution;

[0045] 2. Mix 38 parts of methyl methacrylate and 62 parts of ethylene glycol dimethacrylate, and stir until they are completely miscible;

[0046] 3. Add the mixed solution obtained in step 2 and 0.12 parts of potassium persulfate to the stabilizer solution obtained in step 1 at the same time, and obtain a pre-emulsion through high-speed dispersion;

[0047] 4. Add the pre-emulsion to a four-neck flask equipped with an electric stirrer, a thermometer and a condenser tube, turn on the stirrer, and raise the temperature to 50°C, feed nitrogen to keep the temperature constant, and keep the temperature for 4 hours. After the reaction is finished, a polymer emulsion is obtained.

[0048] 5. The polymer emulsion is spray-dried at...

Embodiment 2

[0050] 1. Mix 0.5 parts of sodium lauryl sulfate, 0.4g of polypropylene glycol and 0.4g of ECOSURF TM EH-9 was added to 389 parts of deionized water and dissolved completely to obtain a stabilizer solution;

[0051] 2. Mix 29 parts of methyl acrylate and 71 parts of allyl methacrylate, and stir until they dissolve completely;

[0052] 3. Add the mixed solution obtained in step 2 and 0.1 part of ammonium persulfate to the stabilizer solution obtained in step 1 at the same time, and obtain a pre-emulsion through high-speed dispersion;

[0053] 4. Add the pre-emulsion to a four-necked flask equipped with an electric stirrer, a thermometer and a condenser tube, turn on the stirrer, and raise the temperature to 55°C, feed nitrogen to keep the temperature constant, keep the temperature for 8 hours, and the reaction is over. A polymer emulsion is obtained.

[0054] 5. The polymer emulsion is spray-dried at a temperature of 130° C. to 160° C. to finally obtain a powder of micron-siz...

Embodiment 3

[0056] 1. Add 0.1 part of sodium dodecyl sulfonate and 1 part of polyvinyl alcohol 1788 to 407 parts of deionized water and dissolve them completely to obtain a stabilizer solution;

[0057] 2. Mix 50 parts of styrene and 50 parts of trimethylolpropane trimethacrylate and stir until completely miscible;

[0058] 3. Add the mixed solution obtained in step 2 and 0.08 part of potassium persulfate to the stabilizer solution obtained in step 1 at the same time, and obtain a pre-emulsion through high-speed dispersion;

[0059] 4. Add the pre-emulsion to a four-necked flask equipped with an electric stirrer, a thermometer and a condenser tube, turn on the stirrer, and raise the temperature to 80°C, feed nitrogen to keep the temperature constant, keep the temperature for 4 hours, and the reaction is over. A polymer emulsion is obtained.

[0060] 5. The polymer emulsion is spray-dried at a temperature of 120° C. to 150° C. to finally obtain a powder of micron-sized highly cross-linked...

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Abstract

The invention discloses a microsphere powder of a micron-level highly cross-linked polymer, a preparation method and an application thereof. The microsphere powder is prepared by mixing a vinyl monomer mixture with a cross-linking agent and adding an initiator, then adding it to a stabilizer to obtain a highly cross-linked polymer emulsion, and drying it; the vinyl monomer mixture contains (meth)acrylic acid ester B1 and aromatic vinyl monomer B2 with alkyl / aryl group, described crosslinking agent is the (meth)acrylic acid ester with polyvinyl group; Described stabilizer and vinyl group The mass ratio of the monomer mixture is (0.53-1.45):100, and the mass ratio of the initiator to the vinyl monomer mixture is (0.08-0.13):100. The sulfate content in the microsphere powder is low, the amount of sulfate contained in 100g of the microsphere powder is 0.1-3mmol, it has good heat resistance, excellent solvent resistance, and a small span coefficient .

Description

technical field [0001] The invention belongs to the technical field of polymer polymerization, and more specifically relates to a microsphere powder of a micron-scale highly cross-linked polymer, a preparation method and application thereof. Background technique [0002] Polymer microspheres are widely used in various fields of daily life due to their specificity such as large specific surface area, strong adsorption and strong surface reaction ability. For example, it can be used as spacer materials for liquid crystal display panels, light diffusion plates, and chromatography column fillers. [0003] However, the strength requirements of polymer microspheres are usually very high in practical applications, and they need to have excellent thermal stability, chemical stability, solvent resistance, etc., and there are strict requirements on the impurity content and water content of the microspheres. . Therefore, a sufficient amount of cross-linking agent must be added during...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F220/14C08F222/14C08F220/40C08F212/08C08F251/02C08F220/18C08F212/12C08F271/02C08J3/12
CPCC08F222/10C08F251/02C08F271/02C08F283/06C08J3/122C08J2335/02C08J2351/00C08J2351/02C08J2351/08C08F222/104C08F222/102C08F220/18C08F212/08C08F220/1802C08F222/103
Inventor 何宇林俊杰杨德彬贾国忠
Owner 广州五行材料科技有限公司
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