{"id":2254,"date":"2026-04-06T14:14:36","date_gmt":"2026-04-06T11:14:36","guid":{"rendered":"https:\/\/metrolab.cen.aboutdev.gr\/?p=2254"},"modified":"2026-04-06T14:14:36","modified_gmt":"2026-04-06T11:14:36","slug":"polycarborane-siloxane","status":"publish","type":"post","link":"https:\/\/metrolab.gr\/index.php\/2026\/04\/06\/polycarborane-siloxane\/","title":{"rendered":"Polycarborane Siloxane"},"content":{"rendered":"<p><strong>HT5, HT8<\/strong><\/p>\n<p>The carborane phases were originally developed as very high thermal stability phases for high temperature work to 460 \u00b0C. The functionality of the carboranes is diffi cult to explain \u2013 they end up with pentavalent bonds with shared sigma bonds rather than \u03c0 &#8211; bonds. The bonds are transient like a benzene with a ball of shared electrons.<\/p>\n<p>HT5 and HT8 are low \u03c0 &#8211; bonding purely due to the low concentration of carborane in the polymer, otherwise it would be high.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>HT5, HT8<\/p>\n<p>The carborane phases were originally developed as very high thermal stability phases for high temperature work to 460 \u00b0C. The functionality of the carboranes is diffi cult to explain \u2013 they end up with pentavalent bonds with shared sigma bonds rather than \u03c0 &#8211; bonds. The bonds are transient like a benzene with a ball of shared electrons.<\/p>\n<p>HT5 and HT8 are low \u03c0 &#8211; bonding purely due to the low concentration of carborane in the polymer, otherwise it would be high.<\/p>\n","protected":false},"author":2,"featured_media":2245,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[63],"tags":[],"class_list":["post-2254","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trajan-sge"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Polycarborane Siloxane - MetroLab<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/metrolab.gr\/index.php\/2026\/04\/06\/polycarborane-siloxane\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Polycarborane Siloxane - MetroLab\" \/>\n<meta property=\"og:description\" content=\"HT5, HT8  The carborane phases were originally developed as very high thermal stability phases for high temperature work to 460 \u00b0C. 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HT5 and HT8 are low \u03c0 - bonding purely due to the low concentration of carborane in the polymer, otherwise it would be high.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/metrolab.gr\/index.php\/2026\/04\/06\/polycarborane-siloxane\/\" \/>\n<meta property=\"og:site_name\" content=\"MetroLab\" \/>\n<meta property=\"article:published_time\" content=\"2026-04-06T11:14:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/metrolab.gr\/wp-content\/uploads\/2026\/04\/Trajan_SGE-phase-04_2021.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"180\" \/>\n\t<meta property=\"og:image:height\" content=\"177\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"praktiki\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"praktiki\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/metrolab.gr\\\/index.php\\\/2026\\\/04\\\/06\\\/polycarborane-siloxane\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/metrolab.gr\\\/index.php\\\/2026\\\/04\\\/06\\\/polycarborane-siloxane\\\/\"},\"author\":{\"name\":\"praktiki\",\"@id\":\"https:\\\/\\\/metrolab.gr\\\/#\\\/schema\\\/person\\\/b98de2eb332dfc3d427dc3608e835c04\"},\"headline\":\"Polycarborane Siloxane\",\"datePublished\":\"2026-04-06T11:14:36+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/metrolab.gr\\\/index.php\\\/2026\\\/04\\\/06\\\/polycarborane-siloxane\\\/\"},\"wordCount\":82,\"publisher\":{\"@id\":\"https:\\\/\\\/metrolab.gr\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/metrolab.gr\\\/index.php\\\/2026\\\/04\\\/06\\\/polycarborane-siloxane\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/metrolab.gr\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/Trajan_SGE-phase-04_2021.jpg\",\"articleSection\":[\"Trajan-SGE\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/metrolab.gr\\\/index.php\\\/2026\\\/04\\\/06\\\/polycarborane-siloxane\\\/\",\"url\":\"https:\\\/\\\/metrolab.gr\\\/index.php\\\/2026\\\/04\\\/06\\\/polycarborane-siloxane\\\/\",\"name\":\"Polycarborane Siloxane - 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