文章摘要
Preparation and Properties of Natural Rubber Latex Foaming Materials
Received:October 27, 2020  Revised:October 27, 2020
DOI:10.12136/j.issn.1000-890X.2022.01.0028
Key Words: words:natural rubber latex;foam material;sulfur;potassium oleate;sodium silicofluoride;curing condition
Author NameAffiliationE-mail
ZHANG Jian Beijing University of Chemical Technology zhangj0852@163.com 
ZOU Hua* Beijing University of Chemical Technology zhangj0852@163.com 
ZHANG Jiyang Beijing Beihua Xinxiang Special Material Technology Co.,Ltd  
WU Weizhipeng Beijing University of Chemical Technology  
PAN Chengteng Beijing University of Chemical Technology  
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Abstract:
      Natural rubber latex foaming materials were prepared by Dunlop foaming method,and the effect of the vulcanizing agent(sulfur) dosage,foaming agent(potassium oleate) dosage,gel-forming agent(sodium silicofluoride) dosage,and curing process on the properties of natural rubber latex foaming materials was studied. The results showed that the sulfur dosage and sodium silicofluoride dosage had great influence on the forming of natural rubber latex foaming materials,while the potassium oleate dosage mainly affected the cell structure of natural rubber latex foaming materials and further affected its performance. The optimum dosage of sulfur,potassium oleate and sodium silicofluoride was 2. 5,1. 5 and 0. 5 phr,respectively. The effect of curing temperature on the properties of natural rubber latex foaming materials was greater than that of curing time,and the best curing condition of natural rubber latex foaming materials was 120 ℃ × 30 min. In addition,opening some exhausting vents for curing mold was beneficial to improve the properties of the foamed natural rubber latex materials.
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