Preparation And Application Of Low-cost Modified PAE Resin

Polyamide polyamine epichlorohydrin is shorted as the PAE resin,which isthe most widely used environment-friendly paper reinforcing agent resin. Itsadvantage is that not containing harmful formaldehyde to have a good value inthe paper industry, on the basis of previous work,This paper use the meltpolycondensation method and low-cost materials to modify the PAE resin, theresult shows that the product has excellent performance and ease of use.The modified PAE resin was prepared by diethylenetriamine, adipic acid,epichlorohydrin and urea as raw materials with melt polycondensationmethod.The effects of reaction time, reaction temperature, the ratio of rawmaterials to the intermediates’ viscosity (PPC)were studied, and the impact ofthe reaction of various factors on the viscosity of the amine value, acid value,and the final product were also studied, meanwhile the impact of various factorson the organochlorine content and the stability of the product was investigatedand finally the impact of the modified resin content on the paper tensile effectswas investigated. When the ratio of diethylenetriamine and adipic acid is1.05:1,the reaction temperature is180℃, the reaction time is210min that the syntheticintermediate polymers’ acid value is20.10%; when the de-ammoniation reactiontemperature is125℃,reaction time4h for the product amine value is42.40%;when the crosslinking reaction temperature is80℃the reaction time is60minthat the viscosity of the final product is993mPa s and the percent of organicchlorine is0.95%, the final solid content of product is12.50%, the pH value ofproduct is3.0~4.5, the wet strength value reached to35.60%when thepreparation of modified PAE dosage is from1.20%to1.40%for dry pulp, finallythe structure of the producrt was analyzed by using infrared spectrum,thermogravimetric analysis and scanning electron microscopy (SEM)were alsoused to know the stability and the surface structure of the product.The modified PAE resin was prepared by diethylenetriamine, adipic acid,epichlorohydrin and ethanolamine as raw materials with melt polycondensation method The effects of reaction time, reaction temperature, the ratio of rawmaterials to the intermediates’ viscosity (PPC)were studied, and the impact ofthe reaction of various factors on the viscosity of the amine value, acid value,and the final product were also studied, meanwhile the impact of various factorson the organochlorine content and the stability of the product were investigatedand finally the impact of the modified resin content on the paper tensile effectswere investigated. When the ratio of diethylenetriamine and adipic acid andethanolamine is7:10:3, the reaction temperature is170℃, the reaction time is160min that the synthetic intermediate polymers’ acid value is28.21%; when thede-ammoniation reaction temperature is125℃and the reaction time is4h for thevalue of product amine is43.79%; when the crosslinking reaction temperature is80℃the reaction time is70min that the viscosity of the final product is984mPa s and the percent of Organic chlorine is1.16%, the final solid content ofproduct is12.50%, the pH value of product is3.0~4.5, the wet strength valuereached to25.80%when the preparation of modified PAE dosage wasfrom1.40%increased to1.60%for dry pulp, finally the structure of the producrtwas analyzed by using infrared spectrum, thermogravimetric analysis andscanning electron microscopy (SEM)were also used to know the stability and thesurface structure of the product.