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Study on Improving Water and Oil Resistance of Molded Pulp Packaging Materials with Organic Fluorine-free Silicone Emulsion
Received:March 23, 2022  
DOI:10.11981/j.issn.1000-6842.2022.03.94
Key Words:organic silicone emulsion;molded pulp;water resistance;oil resistance;temperature resistance
Fund Project:国家自然科学基金项目(项目编号:32171727;32001276)。
Author NameAffiliationPostcode
ZHANG Haiyan China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
School of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457
National Engineering Lab for Pulp and Paper, Beijing, 100102 
100102
ZHANG Hongjie China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper, Beijing, 100102 
100102
CHENG Yun China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper, Beijing, 100102 
100102
JIAO Ting China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
School of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457
National Engineering Lab for Pulp and Paper, Beijing, 100102 
100102
ZHANG Xue China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper, Beijing, 100102 
100102
ZHANG Wenhui School of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457 300457
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Abstract:
      In this paper, the molded pulp packaging material was made from bamboo and softwood chemical pulp, and the organic silicon emulsion (En and B9) and cationic starch modified organic silicone emulsion (CE3/1-B9) were sprayed on the surface of the molded pulp packaging material. The water and oil resistance and temperature resistance of the molded pulp packaging materials before and after treatment were evaluated. The results showed that neither of the unmodified En and B9 endowed molded pulp packaging materials with good water and oil resistance and temperature resistance at the same time. When the total amount of organic silicone emulsion was 5 g/m2, the water contact angle of the laboratory-made molded pulp packaging material after spraying CE3/1-B9 decreased by merely 7° within 5 min, the water absorption (Cobb30 value) decreased from 508 g/m2 to 3 g/m2, and the oil resistance grade (Kit value) was 8~9, and the temperature resistance was greatly improved. It was found that the water contact angle of molded pulp dining bowl after spraying CE3/1-B9 decreased by 4°~5°within 5 min, the Cobb30 value was 5~10 g/m2, and the Kit value was 6~8. In addition, it had great temperature resistance.
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