相关实验视频

Updated: Jun 18, 2025

Synthesis of Terpolymers at Mild Temperatures Using Dynamic Sulfur Bonds in PolyS-Divinylbenzene

Synthesis of Terpolymers at Mild Temperatures Using Dynamic Sulfur Bonds in PolyS-Divinylbenzene

Published on: May 20, 2019

关于SEBS/增塑剂混合系统物理兼容性的分子动力学研究

Weilu Yang¹, Xu Chen¹, Xiuduo Song²

¹Xi'an Modern Chemistry Research Institute, Xi'an, 710065, China.

Journal of molecular modeling

|July 30, 2024

概括

评估了 styrene-ethylene-butylene-styrene块共聚合物 (SEBS) 与四种可塑剂的兼容性. 白油 (WO) 显示出最好的兼容性,对于开发先进的热塑性固体推进剂至关重要.

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

背景情况:

热塑性弹性体 styrene-ethylene-butylene-styrene块共聚合物 (SEBS) 提供出色的机械性能和耐老化性能.
对于热塑性固体推进剂而言,SEBS是一种有前途的材料.
选择可塑剂对于推进剂配方和聚合物兼容性至关重要.

研究的目的:

调查四种不同的增塑剂与SEBS的兼容性.
为了确定基于SEBS的热塑性固体推进剂的最佳塑化剂.

主要方法:

使用材料工作室8.0.0进行分子动力学 (MD) 模拟.
对三素 (TA),二甲基甲酸 (DEP),二甲基脂酸盐 (DOS) 和白油 (WO) 的物理兼容性进行了评估.
模拟结果经过实验验证.

主要成果:

塑化剂与 SEBS 的兼容性顺序被确定为 SEBS/WO > SEBS/DOS > SEBS/DEP > SEBS/TA.
溶解度参数,辐射分布函数和混合可变性模拟用于评估.
实验验证证实了模拟发现.

结论:

该研究成功地建立了可塑化剂与SEBS的兼容性排名.
白油 (WO) 在测试的可塑化剂中显示出与SEBS的优越兼容性.
这些发现对于优化基于SEBS的热塑性固体推进剂配方至关重要.

关键词:

兼容性兼容性兼容性分子动力学模拟模型塑化剂是一种可塑化剂.烯-乙烯-丁烯-烯块共聚合物的烯-乙烯-丁烯.

更多相关视频

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Published on: January 19, 2016

Environmental Dynamic Mechanical Analysis to Predict the Softening Behavior of Neural Implants

Environmental Dynamic Mechanical Analysis to Predict the Softening Behavior of Neural Implants

Published on: March 1, 2019

相关概念视频

Polymer Classification: Architecture

Polymer Classification: Architecture

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...

Polymer Classification: Stereospecificity

Polymer Classification: Stereospecificity

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...

Types of Step-Growth Polymers: Polyesters

Types of Step-Growth Polymers: Polyesters

The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...

Plastic Behavior

Plastic Behavior

A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...