王冬梅,李 云,柏子游.发泡聚乙烯醇缓冲特性研究[J].包装工程,2012,33(7):1-3.
WANG Dong-mei,LI Yun,BAI Zi-you.Research on Cushioning Characteristics of Expanded Polyvinyl Alcohol[J].Packaging Engineering,2012,33(7):1-3. |
| 发泡聚乙烯醇缓冲特性研究 |
| Research on Cushioning Characteristics of Expanded Polyvinyl Alcohol |
| 投稿时间：2012-02-08 修订日期：2012-04-10 |
| DOI： |
| 中文关键词: 发泡聚乙烯醇 静态压缩 吸水 SEM图 |
| 英文关键词: expanded polyvinyl alcohol (PVOH) static compression water absorption SEM image |
| 基金项目:国家自然科学基金（50905120）；广东省自然科学基金（S2011010001073）；广东省高等学校高层次人才项目 |
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| 中文摘要: |
| 开展了干态发泡聚乙烯醇（PVOH）平面及轴向压缩试验、SEM试验和饱和吸水后的发泡PVOH的静态压缩试验研究。结果表明：发泡PVOH的缓冲性能因其加工方向不同而略有不同，发泡PVOH的轴向承载性能略高于其平面承载性能；干态发泡PVOH压缩后基本不具有回弹性，压缩后泡孔孔壁弯曲，泡孔减小，泡沫变得密实，其压缩应力-应变曲线呈线弹性区、平台区和密实化区；饱和吸水后的发泡聚乙烯醇承载性能明显减弱，压缩回弹性增强。因此，发泡PVOH适合于易于污染环境的液态药品或危险品的缓冲外包装，当液体产品的内包装破损后，发泡PVOH可迅速吸收液体以防泄漏，可以起到缓冲的效果。 |
| 英文摘要: |
| Flat compression and vertical compression tests of dry expanded PVOH, scanning electron microscopy (SEM) inspections, and static compression tests of expanded PVOH after fully absorbing water were carried out. The results showed that the cushioning performances of expanded PVOH differ slightly in different directions; its vertical compression characteristics are better than flat compression characteristics; dry expanded PVOH basically loses its resilience after being compressed; the walls of pores of expanded PVOH are bent after compression; the pores shrink and turn much more dense; its compressive stress-strain curve includes linear elastic zone, plateau zone and dense zone; compression performance of fully-water-absorbed expanded PVOH weaken significantly and its resilience improves. Therefore, expanded PVOH is suitable for cushioning package of environmental-harmful liquid medicine or dangerous goods. In case of leakage from inner package, expanded PVOH can absorb the liquid quickly, prevent package from liquid leakage and shows cushioning effect. |
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