一个简单的策略来合成基于异酸盐的聚氨结构粘合剂和核心的
Jin-Gyu Min1, Won-Bin Lim1, Ju-Hong Lee1
1Department of Polymer Science and Engineering, Pusan National University, Busan, 46241, South Korea.
Scientific reports
|September 9, 2024
概括
这项研究开发了一种新的基于生物质的聚氨 (生物质-PU) 结构粘合剂. 最佳配方,使用9/1比的聚乙烯甘醇 (PPG2000) 与基于异酸盐的聚醇 (RPO300),显著提高了冲击强度和热性能.
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:
- 聚氨 (PU) 粘合剂在结构应用中广泛使用.
- 从生物质中开发可持续的高性能粘合剂是关键的研究领域.
- 基于异索化物的聚醇为PU合成提供了一个可再生的替代品.
研究的目的:
- 合成和表征一系列基于生物质的聚氨 (生物质-PU) 结构粘合剂.
- 为了研究不同类异基聚醇含量对粘合性质的影响.
- 为了优化配方,提高冲击强度和热稳定性.
主要方法:
- 生物质PU的合成使用聚乙烯甘醇 (PPG2000),基于异酸盐的聚 (RPO300),异二酸盐 (IPDI) 和4-三-丁 (BP).
- 评估了三种不同的PPG2000/RPO300比率 (9/1,7/3,1/1).
- 使用FT-IR光谱,NCO%定位,TGA,DSC和GPC进行表征.
- 合成核心外 (CSR) 与PU外进行硬化.
主要成果:
- 9/1 PPG2000/RPO300比率的生物质-PU与其他比率相比,表现出优越的冲击强度 (高达35MPa) 和热性能.
- 最佳配方证明了与核心外 (CSR) 固剂的兼容性得到改善.
- 有聚氨外的新型CSR成功合成,以进一步提高冲击强度.
结论:
- 生物质-PU结构粘合剂的最佳配方被确定为PPG2000/RPO300的9/1比.
- 生物质基聚合物可以有效地用于制造高性能结构粘合剂.
- 开发的生物质PU粘合剂在需要高冲击强度和良好的热稳定性应用中显示出前景.
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