为了提高UV固化环氧丙烯酸酯(EA)涂层的阻燃性能和保持其良好的力学及光学性能,将HEA分别与KH-570及P2O5反应合成新型含Si/P功能单体,并把其掺杂于环氧丙烯酸酯(EA)中,制备了UV固化新型含P、Si协效阻燃EA透明涂层.利用FT-IR、UV-Vis、TG及涂层力学测试仪等研究了涂层的阻燃、光学及力学性能.结果表明:UV固化涂层具有较高的C=C双键转化率；含Si、P功能单体的加入不会影响涂膜的固化率、透光性及抗冲击强度,反而使得涂膜附着力提高；含Si功能单体的加入能有效的改善涂层的阻燃性能及热稳定性,当加入量为15％时吸水率最低；含P功能单体的加入能增强涂膜的硬度并改善其阻燃性.当体系中同时存在P、Si元素时,阻燃作用显著.%In order to improve flame retardant property of UV curing epoxy acrylate coating and maintain its good mechanical property and optical performance, novel the ecological environment variation of the downtown area of Liupanshui in Guizhou Province from 1990 to 2010 was analyzed and the evolving trend of landscape pattern in the study area from 2020 to 2050 was forecast using Markov Model. The results showed that: ①in the past two decades , the Shrub land increased significantly, and the paddy field increased greatly in the study area. ② the construction land in the study area increased greatly in the past two decades, the formerly scattered distributed patches gradually merged. The fragmentation degree of cultivation land patches deepened and its shapes became more complex. ③the landscape structure in the study area changed greatly from 1990 to 2010, the landscape spatial connectivity degree lowered with its increased diversity and deepened fragmentation degree. The patch spatial mosaic tended to be complicated and the landscape constituent tended to distribute uniformly. ④ according to the forecast results, with the rapid urbanization, the landscape fragmentation degree of the study area would deepen more, the patch spatial mosaic would tend to be more complex and the landscape constituent would tend to distribute more uniformly.
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