Characteristics of Complex Foaming Composites’ Normal Pressure Foaming of Using Rubber and Bio-Degradable Materials

Dong Hun Han; Young Min Kim; Dan Bi Lee; Kyu Hwan Lee; Han-Seong Kim

doi:10.3740/MRSK.2023.33.8.323

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2023 Vol.33, Issue 8 Next Page

Research Paper

Characteristics of Complex Foaming Composites’ Normal Pressure Foaming of Using Rubber and Bio-Degradable Materials

27 August 2023. pp. 323-329

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Abstract

There are many types of foam molding methods. The most commonly used methods are the pressure foaming method, in which foam resin is mixed with a foaming agent at high temperature and high pressure, and the normal pressure foaming method, which foams at high temperature without pressure. The polymer resins used for foaming have different viscosities. For foaming under normal pressure, they need to be designed and analyzed for optimal foaming conditions, to obtain resins with low melt-viscosity or a narrow optimal viscosity range. This study investigated how changes in viscosity, molding temperature, and cross-link foaming conditions affected the characteristics of the molded foam, prepared by blending rubber polymer with biodegradable resin. The morphologies of cross sections and the cell structures of the normal pressure foam were investigated by SEM analysis. Properties were also studied according to cross-link/foaming conditions and torque. Also, the correlation between foaming characteristics was studied by analyzing tensile strength and elongation, which are mechanical properties of foaming composites.

Keywords

polylactide

nitrile butadiene rubber

ethylene vinyl acetate

normal pressure foaming

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 33
No :8
Pages :323-329
Received Date : 2023-06-29
Revised Date : 2023-08-22
Accepted Date : 2023-08-23
DOI :https://doi.org/10.3740/MRSK.2023.33.8.323

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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