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Development of Eco-Friendly Polymer Foam Using Overcoat Technology of Deodorant

机译：利用除臭剂罩面技术开发环保型聚合物泡沫

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Development of eco-friendly polymer foams is an urgent research topic because of the serious environmental pollution caused by trash heaps and the time-release of harmful gases. Polymer PVC foam using azodicarbonamide as a chemical foaming agent has been highly requested for further improvement due to the residual ammonia gas that continuously leaks out. Here, we demonstrate an effective and costless process for the reduction of releasing ammonia from PVC foams using the overcoat technology of deodorants. We have selected four candidate materials, gelite, zeolite, terra alba, and fumed silica as original materials for the deodorant of ammonia, and they showed an ammonia deodorization rate (ADR) of over 80% without any treatment except the fumed silica. When we over-coated the UV-curing agent mixed deodorants on the PVC foams (thickness ~300 µm), the ADR of the terra alba and zeolite complex foams was remarkably higher than 90%, however, the specific gravity and chromaticity were not changed within 20%. This indicates that our developed process using deodorant layer for ammonia reduction has a high potential for the production of eco-friendly polymer foams.
机译：由于垃圾堆和有害气体的释放会造成严重的环境污染，因此开发环保型聚合物泡沫是一个紧迫的研究课题。由于残留的氨气不断泄漏，使用偶氮二甲酰胺作为化学发泡剂的聚合物PVC泡沫已经迫切需要进一步改进。在这里，我们展示了一种使用除臭剂外涂层技术减少PVC泡沫中氨气释放的有效且低成本的方法。我们已经选择了四种候选材料，即胶凝体，沸石，terra alba和气相二氧化硅作为氨气除臭剂的原始材料，除气相二氧化硅外，未经任何处理，它们显示出80％以上的氨气脱臭率（ADR）。当我们在PVC泡沫上（厚度约300 µm）上涂UV固化剂混合除臭剂时，兵马俑和沸石复合泡沫的ADR明显高于90％，但是比重和色度没有变化。 20％以内这表明我们开发的使用除臭剂层减少氨气的工艺在生产环保型聚合物泡沫方面具有很高的潜力。

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