相关实验视频

Updated: Jan 29, 2026

Manufacturing Of Robust Natural Fiber Preforms Utilizing Bacterial Cellulose as Binder

Manufacturing Of Robust Natural Fiber Preforms Utilizing Bacterial Cellulose as Binder

Published on: May 22, 2014

提高碳素终结聚乙烯 (CTPB) 结合剂系统的机械性能,使用固化加速器

Xiao Qu¹, Peixuan Hu^1,2, Xinyi Ma¹

¹School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.

Molecules (Basel, Switzerland)

|January 28, 2026

概括

这项研究引入了一种新型治愈加速器,以增强固体推进剂的氧树脂 (EP) 结合系统. 优化的系统显示了显著改善的机械性能和更快的固化速率.

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
推进剂技术推进剂技术推进剂技术

背景情况:

碳素终结聚乙烯 (CTPB) /环氧树脂 (EP) 粘合剂系统对于固体推进剂至关重要,但患有缓慢固化,后固化问题和不充分的机械性能.
优化固化过程对于提高固体推进剂应用中的粘合剂性能和可靠性至关重要.

研究的目的:

通过引入一种新的固化加速器来优化固体推进剂的CTPB/EP粘合剂系统.
研究固化加速器对粘合剂系统固化动力学和机械性能的影响.
建立基于CTPB的粘合剂系统的准备方法,以增强延伸和拉伸强度.

主要方法:

在CTPB/EP结合剂系统中将593个异形氨基化合物作为治愈加速器进行了整合.
评估机械性能,包括断裂强度和断裂时的延伸.
确定交联密度,凝分数和固化反应的激活能量.

主要成果:

添加愈合加速器显著改善了CTPB/EP粘合剂系统的断裂强度和断裂时的延长.
使用0.3%重量%的固化加速器,拉力断裂强度达到0.37 MPa,断裂时的延长达到655%.
增加的固化加速器含量显著提高了交联密度 (4.3 × 10-4 mol/cm 在0.3 wt.%) 和降低了激活能量,表明更快的固化.

结论:

开发的CTPB/EP粘合器系统具有很高的延伸和抗拉强度,解决了传统系统的局限性.
该研究为在固体推进剂配方中使用具有增强性能的CTPB型粘合剂系统提供了坚实的科学基础.
这些发现为通过优化粘合剂化学改善固体推进剂性能和可靠性铺平了道路.

关键词:

粘合剂系统的粘合剂系统碳基终结的聚丁.治愈加速器加速器机械性能机械性能机械性能

更多相关视频

In Vivo Evaluation of the Mechanical and Viscoelastic Properties of the Rat Tongue

In Vivo Evaluation of the Mechanical and Viscoelastic Properties of the Rat Tongue

Published on: July 6, 2017

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Published on: June 30, 2023

相关概念视频

Accelerated Curing of Concrete

Accelerated Curing of Concrete

Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...

Physical Properties of Carboxylic Acids

Physical Properties of Carboxylic Acids

Carboxylic acids with lower molecular weight exhibit a sharp and unpleasant odor. They also have higher boiling and melting points than analogous compounds, such as aldehydes, ketones, and alcohols.

Physical Properties of Carboxylic Acid Derivatives

Physical Properties of Carboxylic Acid Derivatives

Intermolecular forces dictate several physical properties such as boiling points, melting points, solubilities, and so forth. They are classified into four types: ionic forces, hydrogen bonds, dipole–dipole forces, and dispersion forces. Ionic forces are the strongest, while dispersion forces are the weakest.
Among the carboxylic acid derivatives, the boiling points of acid chlorides and esters are very similar and are the lowest in the series. Acid anhydrides have slightly higher boiling...

Curing of Concrete

Curing of Concrete

The hydration of cement takes place within the water-filled capillary pores. However, environmental elements can disrupt this process by evaporating water from the concrete surfaces. Sealed concrete with a water-cement ratio below 0.5 experiences self-desiccation, leading to water loss. The water loss in concrete is mitigated by curing. This technique involves keeping the concrete saturated to maintain the necessary temperature and moisture conditions, to optimally fill the spaces in the cement...

Curing Methods

Curing Methods

Concrete members with a small surface-to-volume ratio are cured by oiling and moistening the forms before casting the concrete member. These forms can be left in place for a prolonged period to prevent moisture loss, and can be wetted if made of a material suitable for wetting. If the forms are removed early, the concrete member is moistened and covered with polythene sheets to maintain moisture. For large horizontal concrete surfaces exposed to dry weather, a temporary covering is suspended...

Termination of Translation

Termination of Translation

The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the site where the peptide bond is formed - and a large, internal, water-filled tube through which the nascent polypeptide moves. This latter structure is called the Peptide Exit Tunnel, and it begins at the PTC and spans the body of the large ribosomal subunit. During translation, as the nascent polypeptide chain is synthesized, it passes through...