张凌昊,江贵长,张德浩,李菲,赵忆鑫.聚酯型聚氨酯薄膜的制备及性能研究[J].包装工程,2019,40(19):158-163.
ZHANG Ling-hao,JIANG Gui-chang,ZHANG De-hao,LI Fei,ZHAO Yi-xin.Preparation and Properties of Polyester Polyurethane Films[J].Packaging Engineering,2019,40(19):158-163. |
| 聚酯型聚氨酯薄膜的制备及性能研究 |
| Preparation and Properties of Polyester Polyurethane Films |
| 投稿时间：2019-04-16 修订日期：2019-10-10 |
| DOI：10.19554/j.cnki.1001-3563.2019.19.023 |
| 中文关键词: 聚氨酯 聚酯多元醇 二甘醇 性能 薄膜 |
| 英文关键词: polyurethane polyester polyol diethylene glycol properties film |
| 基金项目:天津市大学生创新创业训练计划（201910057262）；天津科技大学大学生实验室创新基金（1906A201） |
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| 中文摘要: |
| 目的 以1,6-六亚甲基二异氰酸酯（HDI）、聚已二酸-1,4-丁二醇酯（PBA）、二甘醇（DEG）为原料制备聚酯型聚氨酯（PU）薄膜，并研究异氰酸根与氢氧根的比值（R值）对薄膜性能的影响。方法 采用预聚物法制备PU，反应所需要原材料的质量通过不同R值来确定。将制得的PU产物加入DMF进行溶解，然后使用流延方法获得薄膜，随后使用红外光谱进行表征；对薄膜的力学性能、透氧性能、热力学性能、透光性以及亲疏水性进行检测。结果 这种薄膜具有良好的力学性能。随R值的增大，断裂伸长率呈下降趋势，拉伸强度先增大后降低；透光性和阻隔性随R值增大而降低；疏水性随R值增大而增大。结论 证明了用HDI和PBA合成PU的可行性，且R值的变化对PU薄膜性能有很大影响。 |
| 英文摘要: |
| The work aims to prepare the polyester type polyurethane (PU) films with 1,6-hexamethylene diisocyanate (HDI), polyhexanedioic acid-1,4-butanediol ester (PBA) and diethylene glycol (DEG) as raw materials, and study the in-fluence of ratio (R value) of isocyanate to hydroxy radical on the properties of films. PU was synthesized by prepolymer method. The quality of raw materials required for the reaction was determined by different R values. The films were obtained through solution casting by dissolving the PU in DMF, and then characterized by infrared spectroscopy. The mechanical properties, oxygen permeability, thermodynamic properties, light transmittance and hydrophobicity of films were tested. The films had good mechanical properties. The elongation at break decreased with the increased of R value, while the tensile strength increased first and then decreased. The light transmittance and barrier property decreased with the increased of R value. The hydrophobicity increased with the increased of R value. The feasibility of synthesizing PU with HDI and PBA is proved, and the change of R values has a great influence on the properties of PU films. |
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