泡沫成形法天丝纤维多孔缓冲材料的制备及其性能研究

Preparation and Characterization of Lyocell Fiber Porous Buffer Materials by Foam Forming

关键词:  泡沫成形  天丝纤维  PET纤维  缓冲材料

Key Words:foam forming  Lyocell fiber  PET fiber  buffer material

摘要:本研究介绍了一种泡沫成形技术制备多孔缓冲材料的方法，同时利用聚酯纤维（PET纤维）和苯丙乳液增强天丝纤维缓冲材料，实现力学性能的改善。结果表明，当浆浓为3%，pH值=7，以十二烷基苯磺酸钠（SDBS）为发泡剂，纯天丝缓冲材料采用质量分数3%苯丙乳液增强，缓冲材料弹性模量可从37.30 kPa提升至116.12 kPa。当使用质量分数9%苯丙乳液增强时，控制天丝纤维与PET纤维（细度17 dtex）质量比为1∶1，缓冲材料弹性模量为46.99 kPa，密度为0.030 g/cm³，可保证缓冲材料轻质化的同时，提高回弹性。对缓冲材料进行崩解测试发现，纯天丝纤维缓冲材料和天丝纤维/苯丙乳液增强缓冲材料具有一定的可降解性。

Abstract:This study introduced a method of preparing porous buffer materials by foam forming technology. At the same time， the mechanical properties of Lyocell fiber buffer materials were improved by adding PET fiber and styrene acrylic lotion. The results showed that when the fiber concentration was 3%， pH value was 7， sodium dodecyl benzene sulfonate （SDBS） was used as foaming agent， and the pure Lyocell fiber buffer material was reinforced with mass fraction 3% styrene acrylic， the elastic modulus could be increased from 37.30 kPa to 116.12 kPa. When using mass fraction 9% styrene acrylic for reinforcement， set the mass ratio of control Lyocell fiber to PET fiber （fineness of 17 dtex） was 1∶1， the elastic modulus was 46.99 kPa， and the density was 0.030 g/cm³， which could ensure lightweight of the buffer material and greatly improve resilience. The disintegrability test of the buffer materials showed that the pure Lyocell fiber buffer materials and the Lyocell fiber/styrene acrylic emulsion reinforced buffer materials also had certain degradability.