| 刊名 | Agricultural Biotechnology |
| 作者 | Guifang HUANG, Guanyuan WEI, Shengjun WEI, Lan DING, Wenhong CAI, Bolin PAN |
| 作者单位 | Fisheries Research Institute of Fujian, Xiamen |
| DOI | DOI:10.19759/j.cnki.2164-4993.2024.02.011 |
| 年份 | 2024 |
| 刊期 | 2 |
| 页码 | 38-42 |
| 关键词 | EPS floating ball; Spray polyurea elastomer; Gelation rate; Wear resistant; Adhesion; Chemical resistance |
| 摘要 | [Objectives] This study was conducted to develop a polyurea elastomer which can be sprayed on the surface of expanded polystyrene (EPS) floating balls, so as to improve the surface strength and service life of the floating balls. [Methods] The effects of the types and amounts of isocyanate, chain extenders and polyether polyols on the gelation rate, adhesion and wear resistance of polyurea elastomer were investigated, and it was finally determined the preparation process of polyurea elastomer using liquid isophorone diisocyanate (IPDI) and amino-terminated polyether (D2000) as the main raw materials, dimethylthiotoluene diamine (E300) as the chain extender and silica as the wear resistance modifier through two-step solution polymerization of prepolymerization and chain extension. [Results] The physical properties and chemical resistance tests of spray polyurea elastomer showed that it had good physical properties and acid and alkali resistance, and could meet the requirements of spraying and protection of EPS floating ball surface in marine environment. [Conclusions] Polyurea elastomer coating can improve the aging resistance, wear resistance and acid and alkali resistance of EPS floating balls, and prevent them from being fragile and floating randomly to form marine floating garbage which results in "white pollution". |
