相关实验视频

Updated: Jun 17, 2026

Fabrication of Large-area Free-standing Ultrathin Polymer Films

Fabrication of Large-area Free-standing Ultrathin Polymer Films

Published on: June 3, 2015

通过原子层沉积表面修改,提高聚合物基关节的粘附强度

Shachar Keren¹, Elina Yachnin², Noy Cohen³

¹Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel.

ACS applied materials & interfaces

|May 29, 2025

概括

原子层沉积 (ALD) 通过创建表面修饰,显著提高3D打印聚合物的粘附性. 这种技术增强了机械性能,使得聚合物更适合要求苛刻的结构应用.

科学领域:

材料科学材料科学材料科学
表面工程是什么?表面工程是什么?
聚合物科学聚合物科学

背景情况:

提高聚合物基组件的附着性对于它们在结构应用中的使用至关重要.
原子层沉积 (ALD) 为提高材料性能提供了精确的表面修饰.

研究的目的:

为了研究ALD表面修饰在3D打印的烯丁乙 styrene (ABS) 样单腰剪切关节上的有效性.
分析不同ALD沉积氧化物 (Al2O3,TiO2,ZnO) 对粘附性能的影响.

主要方法:

使用ALD将氧化物层 (Al2O3,TiO2,ZnO) 沉积在3D打印的ABS类单剪接头上.
用表面特征技术分析形态和化学变化.
进行机械测试 (剪切强度,故障应变,性) 来评估粘合性能.

主要成果:

ALD表面修改显著改善了剪切强度,故障时的应变和关节的性.
改进的原因是表面能量的增加和机械互锁特征 (纹图案) 的形成.
不同的氧化物表现出不同的生长机制 (表面沉积与蒸汽阶段透) 并影响了表面形态和机械反应.

结论:

ALD是一种多用途的表面处理,用于增强聚合物基材料的粘附性.
在高性能应用中,ALD修饰的聚合物显示出先进的结合策略的潜力.
了解ALD生长机制是优化特定应用的表面性能的关键.

关键词:

粘附性粘附性粘附性粘附性原子层沉积的原子层沉积.机械性能机械性能机械性能表面的修改表面的修改表面处理表面处理蒸汽阶段透透过程中的蒸汽.

更多相关视频

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices

Published on: January 17, 2017

Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites

Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites

Published on: June 14, 2024

相关概念视频

Anionic Chain-Growth Polymerization: Overview

Anionic Chain-Growth Polymerization: Overview

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,...

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...