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Preparation and Performance of Silicone Rubber Composites Modified by Polyurethane

Silicone rubber composites with good comprehensive properties modified with polyurethane were obtained through mixing and vulcanizing methods. Firstly, the polyurethane prepolymer with double bonds was prepared by polytetrahydrofuran glycol (PTMG, Mn = 1000), isophorone diisocyanate (IPDI), and 2-hy...

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Detalles Bibliográficos
Autores principales: Gao, Lijun, Li, Ying, Fu, Wensheng, Zhou, Liming, Fang, Shaoming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10575395/
https://www.ncbi.nlm.nih.gov/pubmed/37835969
http://dx.doi.org/10.3390/polym15193920
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author Gao, Lijun
Li, Ying
Fu, Wensheng
Zhou, Liming
Fang, Shaoming
author_facet Gao, Lijun
Li, Ying
Fu, Wensheng
Zhou, Liming
Fang, Shaoming
author_sort Gao, Lijun
collection PubMed
description Silicone rubber composites with good comprehensive properties modified with polyurethane were obtained through mixing and vulcanizing methods. Firstly, the polyurethane prepolymer with double bonds was prepared by polytetrahydrofuran glycol (PTMG, Mn = 1000), isophorone diisocyanate (IPDI), and 2-hydroxyethyl methacrylate (HEMA). The prepolymer was then added to the silicone rubber compounds to prepare silicone rubber composites, combining the excellent properties of polyurethane with the silicone rubber materials. The effects of polyurethane content on the mechanical properties, insulation, hydrophobicity, thermal stability, and flame retardancy of composites were studied in detail. The results showed that the silicone rubber composites not only have good hydrophobicity, thermal stability and flame retardant properties, but the addition of polyurethane significantly improves the tensile strength at room and low temperatures and the volume resistivity of the materials. The tensile strength increased by 32.5%, and the volume resistivity nearly doubled. The excellent electrical insulation, high hydrophobicity and good mechanical properties make the silicone rubber composites appropriate for use in the field of polymeric house arresters.
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spelling pubmed-105753952023-10-14 Preparation and Performance of Silicone Rubber Composites Modified by Polyurethane Gao, Lijun Li, Ying Fu, Wensheng Zhou, Liming Fang, Shaoming Polymers (Basel) Article Silicone rubber composites with good comprehensive properties modified with polyurethane were obtained through mixing and vulcanizing methods. Firstly, the polyurethane prepolymer with double bonds was prepared by polytetrahydrofuran glycol (PTMG, Mn = 1000), isophorone diisocyanate (IPDI), and 2-hydroxyethyl methacrylate (HEMA). The prepolymer was then added to the silicone rubber compounds to prepare silicone rubber composites, combining the excellent properties of polyurethane with the silicone rubber materials. The effects of polyurethane content on the mechanical properties, insulation, hydrophobicity, thermal stability, and flame retardancy of composites were studied in detail. The results showed that the silicone rubber composites not only have good hydrophobicity, thermal stability and flame retardant properties, but the addition of polyurethane significantly improves the tensile strength at room and low temperatures and the volume resistivity of the materials. The tensile strength increased by 32.5%, and the volume resistivity nearly doubled. The excellent electrical insulation, high hydrophobicity and good mechanical properties make the silicone rubber composites appropriate for use in the field of polymeric house arresters. MDPI 2023-09-28 /pmc/articles/PMC10575395/ /pubmed/37835969 http://dx.doi.org/10.3390/polym15193920 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gao, Lijun
Li, Ying
Fu, Wensheng
Zhou, Liming
Fang, Shaoming
Preparation and Performance of Silicone Rubber Composites Modified by Polyurethane
title Preparation and Performance of Silicone Rubber Composites Modified by Polyurethane
title_full Preparation and Performance of Silicone Rubber Composites Modified by Polyurethane
title_fullStr Preparation and Performance of Silicone Rubber Composites Modified by Polyurethane
title_full_unstemmed Preparation and Performance of Silicone Rubber Composites Modified by Polyurethane
title_short Preparation and Performance of Silicone Rubber Composites Modified by Polyurethane
title_sort preparation and performance of silicone rubber composites modified by polyurethane
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10575395/
https://www.ncbi.nlm.nih.gov/pubmed/37835969
http://dx.doi.org/10.3390/polym15193920
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