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制备一种高强度,疏水性能粉基粘合剂,通过Fenton的试剂进行氧化交叉连接
Mengyao Liu1, Wenrui Yao1, Hao Zheng1
1Key Laboratory of Bio-based Material Science & Technology (Northeast Forestry University), Ministry of Education, Harbin 150040, China; Engineering Research Center of Advanced Wooden Materials (Northeast Forestry University), Ministry of Education, Harbin 150040, China.
International journal of biological macromolecules
|October 6, 2023
概括
这项研究开发了一种新的基于粉的粘合剂 (SFA),通过氧化粉并将其与聚乙烯醇和异酸盐交叉结合. 由此产生的SFA表现出增强的机械性能,疏水性和能源效率,以提高粘合性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 可持续材料 可持续材料
背景情况:
- 粉是一种丰富的可再生碳水化合物来源,具有粘合剂生产的潜力.
- 目前基于粉的粘合剂缺乏理想的机械性能,疏水性,自粘性和能源效率.
- 氧化和交联策略可能会提高粉粘合性能.
研究的目的:
- 开发一种具有更好的性能的高性能粉基粘合剂 (SFA).
- 为了研究氧化,聚乙醇 (PVA) 链扩张和同酸盐交叉连接对粉粘合剂的影响.
- 提高粉基粘合剂的机械强度,疏水性,自粘性和能源效率.
主要方法:
- 粉被氧化使用芬顿的试剂在一个一个的过程.
- 氧化粉与聚乙醇 (PVA) 连锁扩展.
- 改性粉与10%的异酸盐 (PM-200) 进行交叉链接,以创建SFA.
主要成果:
- SF12A35%/2.5-55粘合剂的湿切强度增加了94%,达到1.18 MPa.
- 粘合膜在99°的接触角下表现出疏水性.
- 通过DSC观察到能源效率提高了10%,同时增加了分子量和自我粘附.
结论:
- 与未经修改的粉粘合剂相比,开发的SFA提供了优越的湿切强度,疏水性和能源效率.
- 交叉连接的网络结构显著提高了粘合剂的整体性能和自粘性.
- 这项研究为制造多功能,高性能粉基粘合剂提供了一个有前途的途径.
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