4.7 Article

Facile one-step method to manufacture polypropylene bead foams with outstanding thermal insulation and mechanical properties via supercritical CO2 extrusion foaming

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Materials Science, Multidisciplinary

Fabrication of Lightweight Polyphenylene Oxide/High-Impact Polystyrene Composite Bead Foam Parts via In-Mold Foaming and Molding Technology

Junjie Jiang et al.

Summary: Through controlling process parameters, PHC bead foam parts (PHCPs) with densities from 0.11 to 0.25 g cm(-3) were successfully prepared using in-mold foaming and molding technology (IMFM), showcasing superior mechanical properties and flame-retardant properties.

ADVANCED ENGINEERING MATERIALS (2022)

Article Polymer Science

Expanded Beads of High Melt Strength Polypropylene Moldable at Low Steam Pressure by Foam Extrusion

Daniele Tammaro et al.

Summary: This study explores the foam extrusion process of expanded polypropylene using a long chain branched random co-polypropylene to simplify and reduce the cost of production. The presence of long chain branches in the co-polypropylene increases melt strength and provides a wider foamability range. The study investigates the entire range of foaming conditions using CO2 and isobutane as blowing agents, and shows that the density of the foamed beads can be adjusted. Mechanical properties of the molded parts were also characterized, and it was found that the steam molding pressure for sintering with the long chain branched co-polypropylene is lower than that required for standard polypropylene beads by extrusion. The energy saving in the sintering process makes the entire manufacturing process cost efficient and opens up new possibilities for applications.

POLYMERS (2022)

Article Chemistry, Multidisciplinary

Extruded polypropylene foams with radially gradient porous structures and selective filtration property via supercritical CO2 foaming

Pengke Huang et al.

Summary: Original polypropylene foams with radially gradient porous structures and selective filtration were developed through supercritical CO2 assisted extrusion foaming and stretching auxiliary. The foam exhibits unique physical characteristics and potential applications in selective filtration properties.

JOURNAL OF CO2 UTILIZATION (2022)

Article Engineering, Environmental

A green, durable and effective flame-retardant coating for expandable polystyrene foams

Wei Zhao et al.

Summary: This article introduces a formaldehyde-free phosphorus-containing polysiloxane coating for flame retardancy of EPS foam. The coating acts as both an adhesive and a flame retardant, providing durable thermal insulation and forming a graphited char layer to isolate oxygen, heat, combustible compounds, and smoke particles during combustion. EPS composites treated with this coating exhibit high fire safety and excellent comprehensive performance.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Chemistry, Applied

Thermoplastic polyurethane foams: From autoclave batch foaming to bead foam extrusion

Amin Shabani et al.

Summary: In this study, thermoplastic polyurethane foams were produced using different grades of polyurethane, and various foaming methods were employed to achieve different foam densities and morphological properties. Pressure-induced batch foaming resulted in lower density and minimum cell size, while extrusion foaming had a narrower range of foam expansion.

JOURNAL OF CELLULAR PLASTICS (2021)

Review Chemistry, Applied

Increasing cell density/decreasing cell size to produce microcellular and nanocellular thermoplastic foams: A review

Taher Azdast et al.

Summary: Polymeric foams have attracted attention for their unique properties such as high strength to weight ratio, excellent thermal and sound insulation, and low cost. Researchers have shown that increasing cell density/decreasing cell size can achieve superior thermal insulation. The most efficient solutions include using nucleating agents, increasing blowing agent solubility, and using nanoparticles to achieve microcellular and nanocellular structures.

JOURNAL OF CELLULAR PLASTICS (2021)

Article Chemistry, Physical

Physical and Mechanical Properties of Polypropylene Fibre-Reinforced Cement-Glass Composite

Marcin Malek et al.

Summary: In line with the principles of sustainable development, concrete production should utilize environmentally friendly, low-emission, and energy-intensive materials and technologies, as well as proper waste management. This study found that using glass waste as a replacement for components in concrete, and adding polypropylene fibers can significantly improve the tensile strength and splitting strength of concrete.

MATERIALS (2021)

Article Chemistry, Multidisciplinary

Nanocellular TPU composite foams achieved by stretch-assisted microcellular foaming with low-pressure gaseous CO2 as blowing agent

Jinchuan Zhao et al.

Summary: Microcellular foaming is an advanced and eco-friendly technology that utilizes carbon dioxide as a blowing agent. Stretch-assisted microcellular foaming has been developed to prepare TPU and its composite foams with refined cellular structures, where stretch is shown to promote cell nucleation significantly. The refined cellular morphology is achieved by the synergistic effect of stretch-induced and phase-induced cell nucleation in the foaming process.

JOURNAL OF CO2 UTILIZATION (2021)

Article Materials Science, Multidisciplinary

Novel approach based on autoclave bead foaming to produce expanded polycarbonate (EPC) bead foams with microcellular structure and controlled crystallinity

Ismael Sanchez-Calderon et al.

Summary: Expanded polycarbonate (EPC) with microcellular structure and low density was produced for the first time using the autoclave bead foaming technique in this study. The saturation temperature was found to control density, while foaming time could be used to control crystallinity degree without influencing cellular structure significantly.

MATERIALS & DESIGN (2021)

Review Materials Science, Multidisciplinary

A review of thermoplastic polymer foams for functional applications

Gaojian Wu et al.

Summary: The functional applications of thermoplastic foams have attracted extensive attention, with a focus on various applications, challenges, designs, processing methods, and cellular structure characteristics needed for specific functional applications. Research includes microcellular foaming mechanism, polymer modification methods, crucial factors determining foam performance, advanced functional applications, and future research suggestions.

JOURNAL OF MATERIALS SCIENCE (2021)

Article Polymer Science

Evolution of ordered structure of TPU in high-elastic state and their influences on the autoclave foaming of TPU and inter-bead bonding of expanded TPU beads

Junjie Jiang et al.

Summary: This study introduced critical parameters including softening temperature and viscous flow temperature to explain the autoclave foaming of thermoplastic polyurethane and the inter-bead bonding mechanism of expanded TPU beads. The evolution of ordered structure of TPU in high-elastic state was characterized by different methods, showing possible mechanisms of strong inter-bead bonding in the molded ETPU parts.

POLYMER (2021)

Article Polymer Science

Investigation of the Thermal and Hydrolytic Degradation of Polylactide during Autoclave Foaming

Julia Dreier et al.

Summary: Polylactide (PLA) is a significant bioplastic with potential as a substitute for fossil-based materials, but faces challenges in foaming. By modifying PLA to increase its melt strength and protect it from degradation, it is possible to enhance its foaming properties and durability.

POLYMERS (2021)

Article Materials Science, Composites

Ultra-lightweight, super thermal-insulation and strong PP/CNT microcellular foams

Jinchuan Zhao et al.

COMPOSITES SCIENCE AND TECHNOLOGY (2020)

Article Chemistry, Multidisciplinary

Novel lightweight open-cell polypropylene foams for filtering hazardous materials

Fei Wu et al.

RSC ADVANCES (2020)

Article Engineering, Manufacturing

Ultrastrong, flexible and lightweight anisotropic polypropylene foams with superior flame retardancy

Pengke Huang et al.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2019)

Article Engineering, Chemical

Development of a Bead Foam from an Engineering Polymer with Addition of Chain Extender: Expanded Polybutylene Terephthalate

Tobias Standau et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2018)

Article Engineering, Chemical

Steam-chest molding of expanded thermoplastic polyurethane bead foams and their mechanical properties

Chengbiao Ge et al.

CHEMICAL ENGINEERING SCIENCE (2017)

Review Materials Science, Biomaterials

Current Issues and Challenges in Polypropylene Foaming: A Review

Abolfazi Mohebbi et al.

CELLULAR POLYMERS (2015)

Article Engineering, Environmental

Critical processing parameters for foamed bead manufacturing in a lab-scale autoclave system

Yanting Guo et al.

CHEMICAL ENGINEERING JOURNAL (2013)

Article Engineering, Chemical

Double Crystal Melting Peak Generation for Expanded Polypropylene Bead Foam Manufacturing

Mohammadreza Nofar et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2013)

Article Engineering, Chemical

Steam-Chest Molding of Expanded Polypropylene Foams. 2. Mechanism of Interbead Bonding

Wentao Zhai et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2011)

Article Chemistry, Applied

Study of thermoplastic PLA foam extrusion

S. T. Lee et al.

JOURNAL OF CELLULAR PLASTICS (2008)

Article Polymer Science

Fundamental foaming mechanisms governing the volume expansion of extruded polypropylene foams

HE Naguib et al.

JOURNAL OF APPLIED POLYMER SCIENCE (2004)