Thermoplastic natural rubber (TPNR) as a backbone polymer for metal injection molding

Moldability of metal injection molding (MIM) is dependent on the outward appearance of the resultant feedstock. Properties of the binders used will influence the properties of the feedstock. Stainless steel powder 316L with mean size 22 μm and the binder system consists of three major fractions of p...

Full description

Bibliographic Details
Main Authors:	Norita Hassan, Sahrim Ahmad, Norhamidi Muhamad, Mohd Afian Omar, Noor Azlina Hassan
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2013
Online Access:	http://journalarticle.ukm.my/6691/ http://journalarticle.ukm.my/6691/ http://journalarticle.ukm.my/6691/1/15_Norita_Hassan.pdf

id	ukm-6691
recordtype	eprints
spelling	ukm-66912016-12-14T06:41:56Z http://journalarticle.ukm.my/6691/ Thermoplastic natural rubber (TPNR) as a backbone polymer for metal injection molding Norita Hassan, Sahrim Ahmad, Norhamidi Muhamad, Mohd Afian Omar, Noor Azlina Hassan, Moldability of metal injection molding (MIM) is dependent on the outward appearance of the resultant feedstock. Properties of the binders used will influence the properties of the feedstock. Stainless steel powder 316L with mean size 22 μm and the binder system consists of three major fractions of paraffin wax, thermoplastic natural rubber and stearic acid with a powder loading of 65 vol. % was investigated. Comparison was also made with existing palm stearin in the binder system replacing the paraffin wax. Kinetic solvent extractions were done to determine the differences between the binder systems. The feedstock was then injected into tensile bar using vertical injection machine. The results showed that there is a slightly time extension during the solvent extraction as a comparison. The feedstock has been successfully injection molded at 190-200°C. Study of thermal analysis such as DSC and TGA has been done as a preparation for the thermal debinding and sintering process. This study demonstrated that a backbone polymer; thermoplastic natural rubber performs best in term of flow stability and compact quality and also saves in processing time. Universiti Kebangsaan Malaysia 2013-12 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/6691/1/15_Norita_Hassan.pdf Norita Hassan, and Sahrim Ahmad, and Norhamidi Muhamad, and Mohd Afian Omar, and Noor Azlina Hassan, (2013) Thermoplastic natural rubber (TPNR) as a backbone polymer for metal injection molding. Sains Malaysiana, 42 (12). pp. 1787-1791. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Moldability of metal injection molding (MIM) is dependent on the outward appearance of the resultant feedstock. Properties of the binders used will influence the properties of the feedstock. Stainless steel powder 316L with mean size 22 μm and the binder system consists of three major fractions of paraffin wax, thermoplastic natural rubber and stearic acid with a powder loading of 65 vol. % was investigated. Comparison was also made with existing palm stearin in the binder system replacing the paraffin wax. Kinetic solvent extractions were done to determine the differences between the binder systems. The feedstock was then injected into tensile bar using vertical injection machine. The results showed that there is a slightly time extension during the solvent extraction as a comparison. The feedstock has been successfully injection molded at 190-200°C. Study of thermal analysis such as DSC and TGA has been done as a preparation for the thermal debinding and sintering process. This study demonstrated that a backbone polymer; thermoplastic natural rubber performs best in term of flow stability and compact quality and also saves in processing time.
format	Article
author	Norita Hassan, Sahrim Ahmad, Norhamidi Muhamad, Mohd Afian Omar, Noor Azlina Hassan,
spellingShingle	Norita Hassan, Sahrim Ahmad, Norhamidi Muhamad, Mohd Afian Omar, Noor Azlina Hassan, Thermoplastic natural rubber (TPNR) as a backbone polymer for metal injection molding
author_facet	Norita Hassan, Sahrim Ahmad, Norhamidi Muhamad, Mohd Afian Omar, Noor Azlina Hassan,
author_sort	Norita Hassan,
title	Thermoplastic natural rubber (TPNR) as a backbone polymer for metal injection molding
title_short	Thermoplastic natural rubber (TPNR) as a backbone polymer for metal injection molding
title_full	Thermoplastic natural rubber (TPNR) as a backbone polymer for metal injection molding
title_fullStr	Thermoplastic natural rubber (TPNR) as a backbone polymer for metal injection molding
title_full_unstemmed	Thermoplastic natural rubber (TPNR) as a backbone polymer for metal injection molding
title_sort	thermoplastic natural rubber (tpnr) as a backbone polymer for metal injection molding
publisher	Universiti Kebangsaan Malaysia
publishDate	2013
url	http://journalarticle.ukm.my/6691/ http://journalarticle.ukm.my/6691/ http://journalarticle.ukm.my/6691/1/15_Norita_Hassan.pdf
first_indexed	2023-09-18T19:47:36Z
last_indexed	2023-09-18T19:47:36Z
_version_	1777406004806287360

Thermoplastic natural rubber (TPNR) as a backbone polymer for metal injection molding

Similar Items