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Starch-based dipping emulsion for filter paper of air cleaner and preparation method

An air filter and starch-based technology, which is applied in the field of starch-based air filter filter paper impregnation emulsion preparation, can solve the problem of poor adhesion of fiber surface in filter paper, large amount of functional monomers, and high brittleness of filter paper film and other problems, to achieve the effects of improved retrogradation tendency, high solid dispersion, and excellent film-forming performance

Inactive Publication Date: 2008-11-26
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the increasingly serious environmental protection problems, the impregnated emulsions for filter paper of automobile filters have been developed from alcohol-soluble to water-soluble. Among them, styrene-acrylic emulsion is the most commonly used, but the film of filter paper impregnated with styrene-acrylic emulsion is relatively brittle, and the adhesion to the surface of the fiber in the filter paper is not good, and the amount of functional monomer is large, the cost is high, and the stiffness is not high. and cannot degrade in the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: in the reactor that reflux condenser, stirrer, and feeding device are housed, by mass parts fraction, the cassava oxidized starch of 10 parts is added into the water of 62 parts for gelatinization, then adds 0.2 part of emulsifier twelve Alkyl sodium sulfate emulsification; Next, add 0.08 parts of initiator potassium persulfate to the emulsified mixed solution for pre-initiation for 10 minutes, and mix 10 parts of styrene, 5 parts of butyl acrylate and 0.7 parts of acrylic acid by mass fraction to prepare into a mixed monomer, and then add 1 / 10 of the mixed monomer to the mixed solution after initiation, and slowly add 0.32 parts of initiator potassium persulfate and the remaining mixed monomer dropwise after the reaction solution produces blue light, at 80°C React for 2 hours; finally keep the reaction at 75°C for 1h, wait until the temperature is cooled to 30°C, adjust the pH to 8-9 with 1% NaOH, and filter to discharge. The obtained water-soluble emulsi...

Embodiment 2

[0041] Embodiment 2: in the reactor that reflux condenser, agitator, and feeding device are housed, 8 parts of tapioca oxidized starches are added to 65 parts of water gelatinization by mass fraction, then add 0.1 part of emulsifier twelve Sodium alkylbenzene sulfonate emulsification; Next, add 0.07 part of initiator sodium bisulfite pre-initiation 10min in the mixed solution after emulsification, by mass fraction by the styrene of 12 parts, the butyl acrylate of 3 parts and the butyl acrylate of 0.9 part Mix acrylic acid to make a mixed monomer, then add 1 / 10 of the mixed monomer to the initiated mixed solution, and slowly add 0.28 parts of initiator sodium bisulfite and the remaining mixed monomer dropwise after the reaction solution produces blue light , and react at 80°C for 2 hours; finally, keep the reaction at 75°C for 1h, wait until the temperature is cooled to 30°C, adjust the pH value to 8-9 with 1% NaOH, and filter out the material. The obtained water-soluble emulsi...

Embodiment 3

[0042] Embodiment 3: in the reactor that reflux condenser, stirrer, and feeding device are housed, the cassava oxidized starch of 6 parts is joined in the water of 68 parts by mass fraction and gelatinized, then add 0.3 part of emulsifier twelve Alkyl sodium sulfate emulsification; secondly, add 0.1 part of initiator sodium bisulfite to the emulsified mixed solution for pre-initiation for 10 minutes, mix 7 parts of styrene, 6 parts of butyl acrylate and 0.6 part of acrylic acid by mass fraction Make a mixed monomer, then add 1 / 10 of the mixed monomer to the induced mixed solution, slowly add 0.4 parts of initiator sodium bisulfite and the remaining mixed monomer dropwise after the reaction solution produces blue light, React at 80°C for 2 hours; finally keep the temperature at 75°C for 1 hour, wait until the temperature is cooled to 30°C, adjust the pH value to 8-9 with 1% NaOH, and filter to discharge. The obtained water-soluble emulsion has a solid content of 34.1%, a viscos...

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Abstract

The invention relates to a starch-based air cleaner filter paper dipping latex and a preparation method thereof. Firstly, oxidized cassava starch is added into water for pasting, and then added with an emulsifier for emulsification; then, an evocating agent is added into the emulsified mixture for prepriming, and styrene, butyl acrylate and acrylic acid are mixed for preparing mixed monomer; 1 / 10 mixed monomer is added into the evocated mixture, and the remaining evocating agent and mixed monomer are slowly dropped till blue-rays are generated in the reaction liquid at the temperature of 80 DEG C for 2 hours; at last, the reaction is carried out at the preserved temperature of 75 DEG C for 1hour, till the temperature is cooled to 30 DEG C for, NaOH with the mass concentration of 1% is used for adjusting the pH value to be 8 to 9, filtering and discharging. The latex and the preparation method resolve the problems of bad moistureproof and water-resistant performances of filter paper, bad oil-resistance performance, low stiffness, high cost and difficult degradation after abandoned in the environment, and the like, after common water-soluble dipping latex such as polyvinyl acetate copolymer latex, styrene-acrylic latex and pure acrylic ester latex, and the like, is used for filter paper dipping.

Description

technical field [0001] The invention relates to a preparation method of an air filter filter paper impregnated emulsion, in particular to a preparation method of a starch-based air filter filter paper impregnated emulsion. Background technique [0002] With the increasingly serious environmental protection problems, the impregnated emulsions for filter paper of automobile filters have been developed from alcohol-soluble to water-soluble. Among them, styrene-acrylic emulsion is the most commonly used, but the film of filter paper impregnated with styrene-acrylic emulsion is relatively brittle, and the adhesion to the surface of the fiber in the filter paper is not good, and the amount of functional monomer is large, the cost is high, and the stiffness is not high. and cannot degrade in the environment. Therefore, the research and development of automotive paper-based filter impregnated emulsion with high stiffness, good water resistance, low cost and degradable after disposa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/28D21H27/08B01D39/18F02M35/024
Inventor 陈均志刘毅
Owner SHAANXI UNIV OF SCI & TECH
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