Development and Application of Hot Embossing in Polymer Processing: A Review

Sun, Jianfeng; Zhuang, Jian; Liu, Ying; Xu, Hong; Horne, Jesse; Wujcik, Evan K.; Liu, Haichao; Ryu, Jihye; Wu, Dezhen; Guo, Zhanhu

doi:10.30919/esmm5f605

Cited by 20 publications

(19 citation statements)

References 54 publications

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“…Because of their light weight, low water absorption, high flexibility, good chemical corrosion resistance, high specific modulus and low thermal conductivity, polymers are often used in the field of construction engineering [ 8 , 9 , 10 , 11 , 12 , 13 ]. In construction engineering, polyvinyl chloride or PP are commonly used as drainage pipes, PP or PE are used as water supply pipe, and polyolefin and polyamide are used as insulation layers in cables.…”

Section: Introductionmentioning

confidence: 99%

The Flame-Retardant Mechanisms and Preparation of Polymer Composites and Their Potential Application in Construction Engineering

et al. 2021

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Against the background of people’s increasing awareness of personal safety and property safety, the flame retardancy (FR) of materials has increasingly become the focus of attention in the field of construction engineering. A variety of materials have been developed in research and production in this field. Polymers have many advantages, such as their light weight, low water absorption, high flexibility, good chemical corrosion resistance, high specific strength, high specific modulus and low thermal conductivity, and are often applied to the field of construction engineering. However, the FR of unmodified polymer is not ideal, and new methods to make it more flame retardant are needed to enhance the FR. This article primarily introduces the flame-retardant mechanism of fire retardancy. It summarizes the preparation of polymer flame-retardant materials by adding different flame-retardant agents, and the application and research progress related to polymer flame-retardant materials in construction engineering.

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Section: Introductionmentioning

confidence: 99%

The Flame-Retardant Mechanisms and Preparation of Polymer Composites and Their Potential Application in Construction Engineering

et al. 2021

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“…Due to the simple and low temperature processing, the final surfaces are free of toxic or chemically modified leftovers. According to the required processing throughput and final textured area, hot embossing can be implemented in plate-to-plate, roll-to-plate or roll-to-roll systems [ 13 , 14 , 15 ]. Therefore, this method can be tailored to specific application requirements with low costs and high productivity.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Microtextures Embossed on PET from Laser-Patterned Stamps

et al. 2021

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Nowadays, the demand for surface functionalized plastics is constantly rising. To address this demand with an industry compatible solution, here a strategy is developed for producing hierarchical microstructures on polyethylene terephthalate (PET) by hot embossing using a stainless steel stamp. The master was structured using three laser-based processing steps. First, a nanosecond-Direct Laser Writing (DLW) system was used to pattern dimples with a depth of up to 8 µm. Next, the surface was smoothed by a remelting process with a high-speed laser scanning at low laser fluence. In the third step, Direct Laser Interference Patterning (DLIP) was utilized using four interfering sub-beams to texture a hole-like substructure with a spatial period of 3.1 µm and a depth up to 2 µm. The produced stamp was used to imprint PET foils under controlled temperature and pressure. Optical confocal microscopy and scanning electron microscopy imaging showed that the hierarchical textures could be accurately transferred to the polymer. Finally, the wettability of the single- and multi-scaled textured PET surfaces was characterized with a drop shape analyzer, revealing that the highest water contact angles were reached for the hierarchical patterns. Particularly, this angle was increased from 77° on the untreated PET up to 105° for a hierarchical structure processed with a DLW spot distance of 60 µm and with 10 pulses for the DLIP treatment.

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“…Polymer materials have been used widely in many fields, including energy storage and conversion, 1‐6 electromagnetic interference (EMI) shielding, 7 thermal management, 8,9 sensors, 10,11 cryogenic temperature, 12 carbon dioxide adsorption, 13 solar cell, 14 energy savings, 15 micro/nano‐manufacturing technology, 16 flame retardants, 17 injection molding, 18 coating, 16,19 biomedicine, 20,21 flexible electronics, 21 aerospace, 22 automotive, 22 and defense industries 22 and so forth, due to their lightweight, low cost, low density, easy processing and flexible. However, it is common fact for polymer materials that those composites are extremely easy to be damaged due to the internal or external factors of polymer materials in the process of actual working 23‐27 .…”

Section: Introductionmentioning

confidence: 99%

Promoting healing progress in polymer composites based on Diels‐Alder reaction by constructing silver bridges

Ding

Zhang

Zhou

et al. 2020

Polymers for Advanced Techs

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Polymer composites with self‐healing ability are highly desired for applications in advanced modern devices. Here, we report on self‐healing polymer composites consisting of silver deposited‐carbon nanotubes hybrid nanoparticles (CNT‐Ag) as fillers and self‐healable polyurethane (DAPU) as a matrix based on thermally reversible Diels‐Alder reaction. The results indicated that as the hybrid filler loading is 1 wt%, the composites not only obtained a high‐strength (~15.97 MPa) and high healing efficiency (~90.1%) by increasing filler loading after healing, but also enhance thermal conductivity (~1.65 Wm−1 K−1) and obviously shorten its healing progress in comparison with other composites in the case of the same healing time. Given that Ag_NPs deposited on the surfaces of the CNTs act as bridges to link the adjacent CNTs and reduce interfacial thermal resistance, which can effectively explain the reasons for the obtained high mechanical strength and healing efficiency and promoting healing progress in the polymer composites. This work may offer a novel strategy for balancing relation between mechanical property, healing ability and healing progress in the field of self‐healing materials application.

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Development and Application of Hot Embossing in Polymer Processing: A Review

Cited by 20 publications

References 54 publications

The Flame-Retardant Mechanisms and Preparation of Polymer Composites and Their Potential Application in Construction Engineering

The Flame-Retardant Mechanisms and Preparation of Polymer Composites and Their Potential Application in Construction Engineering

Hierarchical Microtextures Embossed on PET from Laser-Patterned Stamps

Promoting healing progress in polymer composites based on Diels‐Alder reaction by constructing silver bridges

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