The present invention relates to a preparation method for a UV-shielding material based on Mg—Al Layered Double Hydroxide. The material with multi-layered overlay structure is made from Mg—Al double hydroxide layers and interlayer carbonate, its molecular composition is: Mg1-xAlx(OH)2(CO3)x/2.mH2O. The inorganic layers of this material can play a physical shielding role against UV, and the metal elements dispersed on the layer as well as the interlayer anion can play a great role in the chemical absorbing. In addition, by controlling the particle size and the amount of the layers, UV light can be effectively shielded by multi-level reflection and absorption of the multi-level layered structure. Therefore, the material with multi-level chemical and physical shielding properties has a good UV barrier effect for the anti-ageing asphalt, and could significantly increase its UV resistance properties.
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机译:本发明涉及一种基于Mg-Al层状双氢氧化物的紫外线屏蔽材料的制备方法。具有Mg-Al双氢氧化物层和层间碳酸盐的多层覆盖结构材料,其分子组成为:Mg 1-x Sub> Al x Sub>(OH)< Sub> 2 Sub>(CO 3 Sub>) x / 2 Sub> .mH 2 Sub> O。该材料的无机层可对紫外线起到物理屏蔽作用,分散在该层上的金属元素以及层间阴离子可在化学吸收中发挥重要作用。另外,通过控制粒度和层的数量,可以通过多层的多层结构的多层反射和吸收来有效地屏蔽UV光。因此,具有多级化学和物理屏蔽性能的材料对抗老化沥青具有良好的紫外线阻隔效果,并可以显着提高其抗紫外线性能。
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