| 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 Name | Affiliation | E-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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