Mechanical properties enhancement of liquid silicone rubber filled with recycled silicone nipples

Name: Chanasit Tangtrakul

Organization : Chulalongkorn University. Faculty of Engineering

Name: Manunya Okhawilai

Organization : Chulalongkorn University. Metallurgy and Materials Science Research Institute

Name: Sarawut Rimdusit

Organization : Chulalongkorn University. Faculty of Engineering

Email : sarawut.r@chula.ac.th

LCSH: Silicone Rubber -- Reinforcement -- Mechanical Properties

Abstract: For both economic and environmental reasons, there is a continuing broad-based interest that focuses on waste management, reuse, and recycling as a bio-circular-green economy (BCG). In this research, the influences of silicone oil loadings (35, 40, and 45 wt%) and sizes of chopped recycled silicone nipples (1.0, 1.5, and 2.0 mm) on the mechanical properties of liquid silicone rubber/recycled silicone nipple composites were investigated. The silicone composites were prepared and incorporated into the silicone composites at 10 wt%. The mechanical properties, i.e, tensile strength, modulus, elongation at break, and hardness of the silicone composites were characterized. The results showed that silicone oil acted as a plasticizer, which resulted in a marginal decrease in mechanical properties but improved processibility. Moreover, the tensile strength and elongation at break of silicone composites were 13 and 22 % at a chopping size of 1 mm, slightly lower than those of the neat liquid silicone rubber which were much lower compared to other recycled systems. It was due to good interfacial bonding between the similar structures of matrix-filler. On the other hand, modulus at 100% elongation and hardness were improved from the neat liquid silicone rubber. Furthermore, the mechanical properties of the composites increased with the reducing size of recycled silicone nipples. It was also noticeable that the composite samples showed excellent transparency comparable to the neat liquid silicone rubber. Consequently, silicone composites can be potentially applied to medical devices such as mattress pads

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2022

Modified: 2022-12-14

Issued: 2022-12-14

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BibliograpyCitation : In Naresuan University. The 31st Thai Institute of Chemical Engineering and Applied Chemistry Conference (TiCHE 2022) (pp.463-470). Phitsanulok : Naresuan University

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