Fluorine-containing organic electret agent, preparation method thereof and application of fluorine-containing organic electret agent in electret master batch

An electret, electret technology, applied in separation methods, chemical instruments and methods, rayon manufacturing, etc., can solve problems such as poor compatibility

Active Publication Date: 2020-10-30
上海鲁聚聚合物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of fluorine-containing organic elect

Method used

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  • Fluorine-containing organic electret agent, preparation method thereof and application of fluorine-containing organic electret agent in electret master batch
  • Fluorine-containing organic electret agent, preparation method thereof and application of fluorine-containing organic electret agent in electret master batch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Preparation of silica particles

[0034] Dissolve 1 g of cetyltrimethylammonium bromide and 50 mL of n-hexane in 100 mL of ethanol solvent, add 50 mL of tetraethyl orthosilicate and 20 mL of ammonia solution under stirring condition, the mass percentage of ammonia solution is 25%, in React at 40°C for 6 hours. After the reaction, centrifuge, wash, dry, and then perform high-temperature roasting. The roasting conditions are: first heat to 260°C at a heating rate of 10°C / min, keep warm for 1h, and then continue to heat at 5°C / min Heating speed to 550°C and holding for 1 hour to prepare silica particles;

[0035] 2) Preparation of electret silica particles

[0036] Put 10g of the silica particles prepared in step 1) into a mixture of 50mL of absolute ethanol and 100mL of deionized water, carry out ultrasonic dispersion, and disperse for 20min; then add 0.1g of silane coupling agent KH-550 to adjust the pH to 5 , stirred and reacted at a constant temperature of 80°C fo...

Embodiment 2

[0040] 1) Preparation of silica particles

[0041]Dissolve 1 g of cetyltrimethylammonium bromide and 100 mL of n-hexane in 300 mL of ethanol solvent, add 200 mL of tetraethyl orthosilicate and 60 mL of ammonia solution under stirring condition, the mass percentage of ammonia solution is 25%. React at 80°C for 3 hours. After the reaction is completed, centrifuge, wash, dry, and then perform high-temperature roasting. The roasting conditions are: first heat to 260°C at a heating rate of 10°C / min, keep warm for 3 hours, and then continue to heat at 5°C / min Heating speed to 550°C, holding temperature for 3 hours, to prepare silica particles;

[0042] 2) Preparation of electret silica particles

[0043] Put 10 g of the silica particles prepared in step 1) into a mixture of 50 mL of absolute ethanol and 200 mL of deionized water, and disperse ultrasonically for 30 minutes; then add silane coupling agent KH-550 to adjust the pH to 4. Stir and react at a constant temperature of 70°C...

Embodiment 3

[0047] 1) Preparation of silica particles

[0048] Dissolve 1 g of cetyltrimethylammonium bromide and 80 mL of n-hexane in 200 mL of ethanol solvent. Under stirring conditions, add 100 mL of tetraethyl orthosilicate and 40 mL of ammonia solution. The mass percentage of ammonia solution is 25%. React at 60°C for 4 hours. After the reaction, centrifuge, wash, dry, and then perform high-temperature roasting. The roasting conditions are: first heat to 260°C at a heating rate of 10°C / min, keep warm for 2 hours, and then continue to heat at 5°C / min Heating speed to 550°C, holding temperature for 2 hours, to prepare silica particles;

[0049] 2) Preparation of electret silica particles

[0050] Put 10g of the silica particles prepared in step 1) into a mixture of 50mL of absolute ethanol and 150mL of deionized water, carry out ultrasonic dispersion, and disperse for 30min; then add silane coupling agent KH-550, adjust the pH to 4, and Stir and react at a constant temperature of 70°...

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Abstract

The invention belongs to the field of organic electret materials, and particularly relates to a fluorine-containing organic electret agent, a preparation method thereof and application of the fluorine-containing organic electret agent in electret master batch. The fluorine-containing organic electret agent is core-shell structure particles formed by particle core parts and particle shell parts, the average particle size of the core-shell structure particles is 10-100 [mu]m, the particle core parts are electret silica particles, and the particle shell parts are fluorine-silicon modified resin.The organic fluorine-containing electret agent disclosed by the invention has the technical advantages that the organic fluorine-containing electret agent has good compatibility with polypropylene, and the excellent filtering performance of a polypropylene melt-blown electret material can be well maintained. The electret master batch has high electrostatic capacity, under the action of an externalelectric field, space charge injection and polarization charge generation can be achieved, the PP electrostatic adsorption capacity can be improved, the electret stability of the melt-blown electretmaterial can be improved, charge storage can be effectively prolonged, and the electret master batch is suitable for producing melt-blown cloth with the filtering efficiency of 95 or 99.

Description

technical field [0001] The invention belongs to the field of organic electret materials, and in particular relates to a fluorine-containing organic electret agent, a preparation method thereof and an application in electret master batches. Background technique [0002] Electrets refer to dielectric materials that can store space charge and dipole charge for a long time. The charge in an electret can be a space charge, a dipole charge, or both. [0003] Modern electret materials can be divided into two categories, namely, organic electret materials composed of polytetrafluoroethylene and polyvinylidene fluoride, and inorganic electret materials composed of silicon-based silicon nitride and silicon-based silicon dioxide. Electret air filter material has the advantages of high efficiency, low resistance, energy saving, antibacterial, etc. It is a new type of air filter material with very promising application prospects. The amount of electret material charge and the speed of ...

Claims

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Application Information

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IPC IPC(8): C08F292/00C08F230/08C08F220/24C08F220/14C08L23/12C08L51/10C08L51/06C08K5/526C08K5/09C08J3/22D01F6/46D01F1/10D04H1/56B01D39/08
CPCC08F292/00C08J3/226D01F6/46D01F1/10D04H1/56B01D39/086B01D39/083C08J2323/12C08J2451/10C08J2451/06C08K5/526C08K5/09B01D2239/0435C08F230/085C08F220/24C08F220/14
Inventor 高攀智锋
Owner 上海鲁聚聚合物技术有限公司
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