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Engine filter paper dipping agent

An impregnating agent and engine technology, applied in the direction of reinforcing agent addition, etc., can solve problems such as hidden dangers of accidents, environmental pollution, unsatisfactory impregnation effect, etc., and achieve the effect of improving performance and avoiding environmental pollution

Inactive Publication Date: 2003-01-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0027] The purpose of the present invention is to overcome the problems of environmental pollution, accident hazards, etc. in the current solution-type impregnating agent for engine filter paper, and the unsatisfactory impregnating effect of the impregnating agent using water as the dispersion medium, and provide an environment-friendly and excellent use effect. engine filter paper impregnant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] Add deionized water and polyvinyl alcohol into a four-neck flask with a stirrer, reflux condenser, thermometer and dropping funnel, stir, and raise the temperature to (90±2)°C to completely dissolve the polyvinyl alcohol, then cool down to 60 ℃, add emulsifier OP-10 and sodium dodecyl sulfate (SDS), dissolve and heat up to 70-75 ℃. Vinyl acetate, methyl methacrylate, acrylic acid and ammonium persulfate are dropped in about 0.5 hours at constant temperature. Then heat up to 78°C, and start to drop the mixed monomer and initiator APS at the same time, and the mixed monomer is controlled to drop in about 3 hours; APS is added dropwise at a rate of 4% to 5% of the total volume per hour. After the monomer has been dripped, add the remaining APS at one time. Due to the exothermic reaction, the temperature is raised to 78-90°C, and the reaction is kept for 0.5-2 hours, then the temperature is lowered to 70°C, and NaHCO with a concentration of 5% is added 3 The aqueous solut...

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PUM

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Abstract

The engine filter paper dipping agent consists of ternary copolymer emulsion in 1-99 wt% and crosslinking agent in 1-20 wt%. The said ternary copolymer emulsion is prepared through the process of: adding emulsifier to the water solution of PVA at 60-70 deg.c and heating to 70-75 deg.c; adding vinyl acetate, acrylate, acrylic acid and initator and heating to 78-90 deg.c; regulate pH value to 5-6 after 0.5-3 hr and cooling to 30-60 deg.c before discharge. The present invention is one environment protecting engine filter paper dipping agent with good use effect and superior to available engine filter paper dipping agent.

Description

Technical field: [0001] The invention relates to the field of chemical engineering, in particular to an impregnating agent for engine filter paper mainly used for impregnating treatment of engine filter paper of automobiles and other motor vehicles. Background technique [0002] According to the report published in the 5th issue of "Filtration & Separation" magazine in 1978 entitled "Impregnated paper for Automotive Filtration" (Impregnated paper for Automotive Filtration), most of the impregnated filter papers used in automotive filter paper products in European countries are alcohol-soluble. impregnated with phenolic resin. The advantage of impregnating filter paper with this kind of resin is that when the resin is not cured, the paper is relatively soft, which is conducive to folding and forming. After curing, the resin hardens and forms a three-dimensional structure in the filter paper, thereby greatly improving the rigidity of the filter element. , strong and strong, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/18
Inventor 汤明玉黄涛
Owner SOUTH CHINA UNIV OF TECH
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