含和共聚物的合成和阻燃行为及其在聚烯中的应用
Tianhao Xu1, Dali Gao2, Hua Yin2
1State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.
Macromolecular rapid communications
|July 15, 2024
概括
一种新型的阻燃剂,聚PEPAA-co-AM,显著增强了聚烯的性能.
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
- 阻燃性是指阻燃性是指阻燃性.
背景情况:
- 阻燃剂对于提高聚合物如聚烯的安全性至关重要.
- 开发高效和有效的阻燃系统仍然是一个活跃的研究领域.
- 大分子阻燃剂在减少迁移和改善兼容性方面具有优势.
研究的目的:
- 为聚烯 (PP) 合成和评估一种新的宏分子阻燃剂,聚PEPAA-co-AM.
- 研究 PP 复合材料中的 poly ((PEPAA-co-AM) 的阻燃功效.
- 阐明阻燃机制,并评估对材料性能的影响.
主要方法:
- 通过基性共聚合,合成PEPAA单体和多聚合物 (PEPAA-co-AM).
- 制备 PP/poly ((PEPAA-co-AM) 复合材料的方法.
- 使用圆热度测试 (CCT) 评估阻燃性.
- 炭残留物 (SEM-EDS,拉曼光谱) 和气相热解产品 (TG-FTIR-MS) 的表征.
主要成果:
- 与同聚合物和混合物相比,Poly ((PEPAA-co-AM) 显著提高了PP的阻燃性.
- 在2/8.8的PEPAA/AM共聚合比率下观察到最佳的阻燃性.
- 这些复合材料表现出增强的机械性能,并保留了PP的加工特性.
- 提出了一种阻燃机制,涉及焦炭形成和气相抑制.
结论:
- 合成的聚PEPAA-co-AM是一种有效的聚烯宏分子阻燃剂.
- 同聚合物表现出比同聚合物和混合物更高的性能.
- 开发的PP复合材料为提高消防安全提供了有前途的解决方案,而不会损害材料的完整性.
相关概念视频
Polymer Classification: Stereospecificity
2.4K
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
2.4K
Characteristics and Nomenclature of Homopolymers
3.0K
Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.
3.0K
Polymer Classification: Architecture
2.7K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
2.7K
Polymers
35.7K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
35.7K
Characteristics and Nomenclature of Copolymers
2.5K
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
2.5K
Anionic Chain-Growth Polymerization: Overview
2.1K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.1K


