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Advances in Polymer Molding and Processing

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Processing and Engineering".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 271

Special Issue Editor


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Guest Editor
1. College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
2. State Key Laboratory of Precision Manufacturing for Extreme Service Performance, Changsha 410083, China
Interests: polymer processing; micro- and nano-manufacturing; flame-retardant polymers
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Special Issue Information

Dear Colleagues,

Polymer molding (injection molding, hot embrassing, etc.) is a key process in mass-producing complex plastic components for industries dealing with automotives, mobile phones, and household appliances. Recent advancements, such as micro/nano-injection molding, intelligent molding, and ultrasonic/air/fluid-assisted plasticization and molding, have greatly enhanced product functionality and performance. Additionally, sensors and actuators, engineering simulations, and artificial intelligence have also helped improve our understanding of the process, as well as enhance the quality and efficiency during polymer molding processes.

The aim of this Special Issue is to present the latest studies on “Advances in Polymer Molding and Processing”. We sincerely invite researchers to contribute to this Special Issue by submitting related articles and review papers.

Dr. Lu Zhang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • intelligent injection machine
    • extrusion-injection molding machine for LFT
    • energy-saving machine
    • ultra-fast injection machine
  • monitoring technology
    • sensor fusion for injection molding
    • smart and integrated in-mold sensors
  • rheology
    • rheology in injection molding
    • rheological characterization of polymer materials
  • mold technology
    • optimization of mold-cooling channels
    • conformal cooling channel design
    • quick-change mold
    • design optimization of sequential valve gating for HRS
    • thermoplastic/thermosetting-integrated mold
    • RHCM or variothermal mold
  • innovative molding process
    • multi-layer molding
    • micro-molding
    • multi-component (thermoplastic, thermoset, metal, ceramic) molding
    • foam-injection molding
  • sustainability
    • molding process using bioplastics
    • molding process using recycled polymers
  • materials
    • recycled materials
    • bioplastic materials
    • long-fiber thermoplastics
    • nanocomposites

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Published Papers (1 paper)

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Research

16 pages, 4816 KiB  
Article
The Effect of Processing Methods and Nucleating Agents on the Wear Resistance and Crystallinity Behavior of Nylon 11
by Hu Lyu, Dongzhou Sun, Yue Li, Guoliang Yu, Shudi Liu, Pengfei Huo, Dawei Zhang and Xianzhi Kong
Polymers 2025, 17(8), 1073; https://doi.org/10.3390/polym17081073 - 16 Apr 2025
Viewed by 189
Abstract
Nylon 11 is widely used in abrasion-resistant coatings due to its excellent wear resistance and processability. Here, the effects of different processing methods (pre-treatment temperatures, melting temperatures, and heating programs) and nucleating agents (silica, talcum powder, and montmorillonite) on the crystallinity behavior and [...] Read more.
Nylon 11 is widely used in abrasion-resistant coatings due to its excellent wear resistance and processability. Here, the effects of different processing methods (pre-treatment temperatures, melting temperatures, and heating programs) and nucleating agents (silica, talcum powder, and montmorillonite) on the crystallinity behavior and wear resistance of Nylon 11 were systematically analyzed. The results show that pre-treating Nylon 11 at 80–100 °C enhances its wear resistance, and its friction coefficient drops to ~0.16. Melting temperature influences both the processing flowability and wear resistance of Nylon 11. Specifically, when the melting temperature exceeds 195 °C, wear resistance improves significantly and its friction coefficient decreases from 0.32 to 0.17. Moreover, variations in the heating program also affect the wear resistance of Nylon 11. Optimal wear resistance is achieved when Nylon 11 is held at both 165 °C and 185 °C for 10 min (friction coefficient: ~0.17). The nucleating agents (silica, talcum powder, and montmorillonite) do not change the crystalline morphology of Nylon 11, which predominantly exhibits an orthorhombic α-phase. However, as the content of nucleating agents increases (0–1 wt%), the crystallinity first rises and then declines, with its highest value being 46.48%. This work emphasizes the critical role of processing methods and nucleating agents in the wear resistance and crystallinity behavior of Nylon 11, providing valuable insights for their performance optimization. Full article
(This article belongs to the Special Issue Advances in Polymer Molding and Processing)
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