摘要
采用正交试验设计,以Na2SiO3·H2O为原料,经酸化后加入丙烯酸进行有机化处理获得活性含硅中间体,并通过乳液聚合得到PMMA-SiO2杂化材料(乳液),经预处理在保证天然胶乳(NRL)体系稳定的情况下,加入NRL中制备PMMA-SiO2杂化材料(乳液)改性NRL。结果表明,PMMA-SiO2杂化材料改性天然胶乳硫化胶膜的力学性能明显提高,在较适宜的反应条件下(甲基丙烯酸甲酯/活性含硅中间体的体积之比为2∶1,丙烯酸15mL,水解时间120min,温度100℃),预测所得PMMA-SiO2杂化材料改性天然胶乳硫化胶膜的拉伸强度为26.33MPa。
An orthodox experiment was designed to prepare natural rubber latex modified by PMMA/SiO2 OIHMs. The activated silicon alcohol intermediate solution was prepared by using Na2SiO3, H2O as raw material, which was organic treated by acrylic acid after acidified. The PMMA-SiO2 OIHMs was synthesized by emulsion polymerization, pretreated and added into the natural rubber latex for preparation of the PMMA/SiO2 OIHMs modified natural rubber latex. The colloid properties and the physical and mechanical properties of the vulcanized latex film modified by PMMA-SiO2 OIHMs were analysed. The orthodox experiment analysis showed that the mechanical and anti-aging properties of the vulcanized latex film of the natural rubber latex modified by PMMA-SiO2 OHMs were improved obviously and that the optimum preparation condition was： the volume ratio of MMA and silicon alcohol intermediate solution 2：1, the volume of acrylic acid 20 ml, hydrolysing time 120 min, and polymerising temperature 100℃. The optimum tensile strength of the natural rubber latex film modified by PMMA-SiO2 OHMs was predicted to be about 26.33 MPa under the optimal preparation condition.
出处
《热带农业科学》
2006年第2期25-28,共4页
Chinese Journal of Tropical Agriculture
