| Abstract:This essay used carboxymethyl cellulose to modify PAE resin, to improve the performance of PAE resin and give it some dry strengthening performance, as well as reduce its cost. The preparation process of the modified PAE resin and its strengthening performance were studied, and Fourier transform infrared spectrometer was used to characterize the modified product. The results showed that, the best content of carboxyl introduced to the resin was 9%； when the modified PAE resin was used in the paper with dosage of 0.6%, the paper dry tensile index increased about 22%, and wet tensile index increased by 19%, folding index increased by about 13%, tearing index increased by about 5%, the bond strength increased by about 6% compared with using traditional PAE resin; when the modified PAE resin dosage was 0.6%, the pulp dewatering performance was optimal. In addition, adding carboxyl into PAE resin could reduce the cost of the PAE resin and also benefit to the paper recycling. |
