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| Preparation of Modified Paraffin Emulsion and Its Application on Paper Surface Sizing |
| Received:July 12, 2020 |
| DOI：10.11980/j.issn.0254-508X.2020.11.014 |
| Key Words:modified paraffin emulsion preparation waterproof surface sizing |
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| Abstract:In this paper， oxidized polyethylene wax was used to physically modify No.58 paraffin， combined with emulsifier OP-10 to prepare a stable modified paraffin emulsion. The effect of formulation composition and emulsification process on the performance of the emulsion was discussed， and the sizing effeet of modified paraffin emulsion on the surface of paper was evaluated. The results showed that under the condition of emulsion solid content of 30%， in which emulsifier of 7%， m（No.58 paraffin）∶m（oxidized polyethylene wax）= 21∶2， stirring speed was 1000 r/min， emulsification temperature was 70℃ and emulsification time was 4 min， the solid content， particle size and stability of modified paraffin emulsion were significantly better than conventional paraffin emulsion. The sizing degree of the modified paraffin wax emulsion surface sizing paper was 1.5 mm， and the wetting angle decreased by 1.35° after sizing times of 180 s； compared with the unsized paper， the tensile index and burst index of sizing paper increased by 8.84% and 15.56%， respectively. It showed that modified paraffin wax emulsion was an excellent paper sizing agent. |
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