完全基于生物的,本质上具有阻燃性的不和聚烯交叉连接与基于异酸盐的稀释剂
Fukai Chu1, Wei Wang2, Yifan Zhou1
1State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
Chemosphere
|October 11, 2023
概括
这项研究使用新型反应性稀释剂开发出完全基于生物的不和聚树脂 (UPR). 与传统的烯基材料相比,这些环保的UPR具有增强的阻燃性和更好的安全性.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
背景情况:
- 不和聚树脂 (UPR) 是广泛用于各种应用的多功能聚合物.
- 传统的UPR合成通常涉及挥发性烯稀释剂,引发了环境和安全方面的担忧.
- 开发生物基和固有的阻燃性UPR替代品对于可持续材料开发至关重要.
研究的目的:
- 使用可持续原料合成完全生物基的UPR预聚合物.
- 为了评估生物基异化物甲基酸盐 (MI) 作为烯的反应稀释剂替代品.
- 通过加入酸基组,为生物基UPR赋予内在的阻燃性.
主要方法:
- 生物基氧酸,伊塔康酸和乙烯基醇的共聚凝聚,形成UPR预聚合物.
- 在UPR分子链中引入基酸盐组.
- 预聚合物的稀释用生物基异体甲基酸盐 (MI) 或烯.
- 评估挥发性,固化动力学,凝含量,阻燃性 (UL-94,LOI,PHRR,THR,FRI) 和机械性能.
主要成果:
- 生物基UPR与MI稀释剂获得UL-94 V0评级,含量较低 (2.14重%) 与基于烯的UPR (2.63重%) 相比.
- 在MI稀释的UPR中含量增加到2.63%的重量,导致较高的LOI (29%),PHRR (68.01%) 和THR (48.62%) 的显著降低.
- 含的UPR复合材料的阻燃性指数 (FRI) 从MI稀释的1.00增加到6.46,这表明阻燃性能优越.
结论:
- 使用生物基预聚合物和MI反应性稀释剂,可以制备具有优异阻燃性的完全生物基UPR.
- 异索索比德甲基酸盐 (MI) 在UPR配方中显示出作为一种更安全,更具反应性的替代物而不是挥发性烯的潜力.
- 这项研究为开发高性能,可持续和更安全的UPR材料提供了可行的途径.
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