{"id":23544,"date":"2026-10-18T08:46:35","date_gmt":"2026-10-18T08:46:35","guid":{"rendered":"https:\/\/www.smartexyarn.com\/?post_type=product&#038;p=23544"},"modified":"2026-10-18T11:39:22","modified_gmt":"2026-10-18T11:39:22","slug":"icsnow-bnx-boron-nitride-cooling-yarn","status":"publish","type":"product","link":"https:\/\/www.smartexyarn.com\/product\/icsnow-bnx-boron-nitride-cooling-yarn\/","title":{"rendered":"IcSnow\u00ae BNX\u2122 Boron Nitride Cooling Yarn"},"content":{"rendered":"<div class=\"bnx-product\">\n<style>.bnx-product{font:17px\/1.7 Arial,sans-serif;color:#24343b;max-width:1080px;margin:auto}.bnx-product h2{font-size:1.7em;line-height:1.25;margin:2em 0 .5em;color:#113b47}.bnx-product p{margin:.75em 0}.bnx-product .lead{font-size:1.15em}.bnx-product .panel{background:#eef5f4;border-left:4px solid #3a8d88;padding:1.1em 1.4em;margin:1.5em 0}.bnx-product table{border-collapse:collapse;width:100%;margin:1em 0}.bnx-product th,.bnx-product td{border:1px solid #c9d6d8;padding:.65em;text-align:left;vertical-align:top}.bnx-product th{background:#e9f1f2}.bnx-product img{max-width:100%;height:auto}.bnx-product figure{margin:1.7em 0}.bnx-product figcaption{font-size:.85em;color:#53666c}.bnx-product .cta{background:#113b47;color:white;padding:1.5em;margin-top:2em}.bnx-product .cta a{color:white;text-decoration:underline}@media(max-width:650px){.bnx-product table{display:block;overflow-x:auto;font-size:.88em}}<\/style>\n<style>.bnx-product p a{color:#126f79!important;text-decoration:underline!important;text-underline-offset:3px;font-weight:600}.bnx-product .cta a{color:#fff!important}<\/style>\n<p class=\"lead\"><strong>IcSnow\u00ae BNX\u2122 brings boron nitride into cooling yarn development for fabric-level heat management.<\/strong> Choose a polymer and textile construction for the use condition, then check cool touch, UV protection and solar heat response as separate properties. A quick heat transfer at first touch can feel cool when the textile is cooler than skin; it can feel hot when a sun-heated surface is warmer. BNX therefore provides a material route and sample evidence, not a promise that every finished product remains cool.<\/p>\n<figure><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.smartexyarn.com\/wp-content\/uploads\/2026\/10\/bnx-yarn-concept-feature.jpg\" alt=\"Concept scene of white and gray yarn cones with a woven textile swatch\" width=\"800\" height=\"800\"><figcaption>Concept image illustrating yarn and fabric development.<\/figcaption><\/figure>\n<h2>What BNX changes in a textile development brief<\/h2>\n<p>Hexagonal boron nitride has a layered structure with strong in-plane heat transport. Incorporated into a polymer system, it offers a route to spreading contact heat through a fiber. Measured performance depends on dispersion, polymer, loading, yarn formation, construction, finishing and the final fabric. If your brief also includes UV protection or lower solar heat gain, request separate optical testing on the finished colour and construction. A UV-protective fabric need not absorb less solar energy.<\/p>\n<h2>Choose the polymer route before choosing a number<\/h2>\n<table>\n<thead>\n<tr>\n<th>BNX development route<\/th>\n<th>Where to explore it<\/th>\n<th>Result from an individual fabric sample<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Polyester basis<\/td>\n<td>Textile constructions where dyeing, hand and cost need balancing.<\/td>\n<td>q-max 0.270 W\/cm\u00b2 at \u0394T 20\u00b0C.<\/td>\n<\/tr>\n<tr>\n<td>Nylon basis<\/td>\n<td>Soft, flexible contact surfaces and apparel constructions.<\/td>\n<td>q-max 0.350 W\/cm\u00b2 at \u0394T 20\u00b0C. A separate white knit measured 0.31 W\/cm\u00b2 at \u0394T 15\u00b0C.<\/td>\n<\/tr>\n<tr>\n<td>HDPE basis<\/td>\n<td>Currently scoped to home textiles, in listed 200D, 300D and 400D yarn sizes.<\/td>\n<td>q-max 0.433 W\/cm\u00b2 at \u0394T 20\u00b0C; dyeing and process temperature constrain use.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The three \u0394T 20\u00b0C results came from differently constructed fabrics. They do not rank the polymers under controlled identical conditions, and none is an automotive upholstery result. HDPE is not offered here as an automotive-seat route.<\/p>\n<h2>What has been measured in fabric samples<\/h2>\n<p>A white nylon knit measured q-max 0.31 W\/cm\u00b2 at a 15\u00b0C temperature difference under GB\/T 35263-2017. The same submitted knit recorded UPF &gt;50 (reported as 74) under GB\/T 18830-2009. A separately tested white fabric recorded a 52.5% thermal-blocking rate under GB\/T 41560-2022 at a 10 mm sample-to-blackboard distance. These are results for the specified samples and methods, not a combined result for one construction. The thermal-blocking rate is neither NIR reflectance nor a predicted temperature reduction in a garment or seat. Ask for the corresponding test records when selecting a sample.<\/p>\n<p>For a closer look at how to compare contact, sunlight and moisture results, read our <a href=\"https:\/\/www.smartexyarn.com\/blog\/boron-nitride-cooling-fabric-contact-sun-heat\/\">BNX cooling fabric guide<\/a>.<\/p>\n<div class=\"panel\"><strong>Heat-flow direction matters.<\/strong> High q-max records stronger initial heat exchange under the stated laboratory temperature difference. If the seat or fabric is hotter than skin after parking in sun, faster exchange can make contact feel hotter. Solar exposure needs its own final-colour testing before a \u201cless hot after sun\u201d claim.<\/div>\n<h2>UV, sunlight and long-wave emission need separate decisions<\/h2>\n<p>UPF concerns ultraviolet transmission. Solar heat gain includes visible and near-infrared energy, which a visually similar colour may absorb differently. Radiative cooling in the 8\u201313 \u03bcm band remains a development direction for BNX; final-fabric spectral-emissivity evidence is needed before making that claim. For a sun-exposed product, compare spectral or solar reflectance and a defined heating test on colour-matched finished samples. For prolonged contact, examine moisture and vapour pathways in the whole assembly.<\/p>\n<h2>From yarn to a relevant sample<\/h2>\n<p>Start with the end use, colour and construction, then identify a conventional control with comparable mass, thickness and finish. Ask which fabric face is tested, how it will be bonded or backed, and whether pores remain open. For upholstered seating, the cover, adhesive, backing, foam and any ventilation need to work together. <a href=\"https:\/\/www.smartexyarn.com\/product\/8c-pro-cool-touch-moisture-wicking-antibacterial-and-anti-uv-yarn\/\">8C Pro&#8217;s moisture-management route<\/a> may be discussed as a separate, optional development component; its apparel positioning is not proof of seat performance.<\/p>\n<h2>Applications and availability<\/h2>\n<p>Polyester and nylon provide development routes for clothing and related textiles; the present HDPE route is for home textiles. For seating, explore our <a href=\"https:\/\/www.smartexyarn.com\/creative-textile-lab\/woven-car-seat-fabric-sun-heat-moisture\/\">woven textile car-seat development concept<\/a>. It is a proposed application, not an available or automotive-qualified finished product. For another IcSnow formulation, see our <a href=\"https:\/\/www.smartexyarn.com\/product\/icsnow-nir-reflective-cooling-nylon-yarn-upf50-certified\/\">cooling nylon yarn<\/a>; its test results apply to that product&#8217;s samples. Our <a href=\"https:\/\/www.smartexyarn.com\/blog\/q-max-contact-cooling-how-to-read-the-physics-test-data-and-durability-questions-behind-a-cool-touch-claim\/\">q-max guide<\/a> explains the contact test in more detail.<\/p>\n<h2>Start a BNX sample discussion<\/h2>\n<div class=\"cta\">\n<p>Tell us the target textile, polymer preference, colour, construction, intended exposure, backing or lamination, and the claim you need to verify. Include a control fabric if you have one. We can use those details to discuss an appropriate BNX development route and the evidence needed for the final fabric.<\/p>\n<p><a href=\"https:\/\/www.smartexyarn.com\/contact-us\/\">Discuss your BNX sample brief<\/a><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Explore IcSnow\u00ae BNX\u2122 boron nitride cooling yarn development in polyester and nylon routes. Check cool touch, UV protection and solar heat response on the relevant finished fabric.<\/p>\n","protected":false},"featured_media":23539,"comment_status":"open","ping_status":"closed","template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"IcSnow BNX Boron Nitride Cooling Yarn | Annie's Smartex","_seopress_titles_desc":"Explore IcSnow BNX polyester and nylon yarn development routes, reported fabric-level cool-touch evidence and the separate tests needed for sun-exposed applications.","_seopress_robots_index":"","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[99,33,22],"product_tag":[],"class_list":{"0":"post-23544","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-cooling-moisture-wicking","7":"product_cat-performance-yarn","8":"product_cat-summer-winter","9":"desktop-align-center","10":"tablet-align-center","11":"mobile-align-center","12":"ast-product-gallery-layout-horizontal","13":"ast-product-gallery-with-no-image","14":"ast-product-tabs-layout-horizontal","16":"first","17":"instock","18":"shipping-taxable","19":"product-type-simple"},"spectra_custom_meta":{"_uagb_previous_block_counts":["a:90:{s:21:\"uagb\/advanced-heading\";i:0;s:15:\"uagb\/blockquote\";i:0;s:12:\"uagb\/buttons\";i:0;s:18:\"uagb\/buttons-child\";i:0;s:19:\"uagb\/call-to-action\";i:0;s:15:\"uagb\/cf7-styler\";i:0;s:11:\"uagb\/column\";i:0;s:12:\"uagb\/columns\";i:0;s:14:\"uagb\/container\";i:0;s:21:\"uagb\/content-timeline\";i:0;s:27:\"uagb\/content-timeline-child\";i:0;s:14:\"uagb\/countdown\";i:0;s:12:\"uagb\/counter\";i:0;s:8:\"uagb\/faq\";i:0;s:14:\"uagb\/faq-child\";i:0;s:10:\"uagb\/forms\";i:0;s:17:\"uagb\/forms-accept\";i:0;s:19:\"uagb\/forms-checkbox\";i:0;s:15:\"uagb\/forms-date\";i:0;s:16:\"uagb\/forms-email\";i:0;s:17:\"uagb\/forms-hidden\";i:0;s:15:\"uagb\/forms-name\";i:0;s:16:\"uagb\/forms-phone\";i:0;s:16:\"uagb\/forms-radio\";i:0;s:17:\"uagb\/forms-select\";i:0;s:19:\"uagb\/forms-textarea\";i:0;s:17:\"uagb\/forms-toggle\";i:0;s:14:\"uagb\/forms-url\";i:0;s:14:\"uagb\/gf-styler\";i:0;s:15:\"uagb\/google-map\";i:0;s:11:\"uagb\/how-to\";i:0;s:16:\"uagb\/how-to-step\";i:0;s:9:\"uagb\/icon\";i:0;s:14:\"uagb\/icon-list\";i:0;s:20:\"uagb\/icon-list-child\";i:0;s:10:\"uagb\/image\";i:0;s:18:\"uagb\/image-gallery\";i:0;s:13:\"uagb\/info-box\";i:0;s:18:\"uagb\/inline-notice\";i:0;s:11:\"uagb\/lottie\";i:0;s:21:\"uagb\/marketing-button\";i:0;s:10:\"uagb\/modal\";i:0;s:18:\"uagb\/popup-builder\";i:0;s:16:\"uagb\/post-button\";i:0;s:18:\"uagb\/post-carousel\";i:0;s:17:\"uagb\/post-excerpt\";i:0;s:14:\"uagb\/post-grid\";i:0;s:15:\"uagb\/post-image\";i:0;s:17:\"uagb\/post-masonry\";i:0;s:14:\"uagb\/post-meta\";i:0;s:18:\"uagb\/post-taxonomy\";i:0;s:18:\"uagb\/post-timeline\";i:0;s:15:\"uagb\/post-title\";i:0;s:20:\"uagb\/restaurant-menu\";i:0;s:26:\"uagb\/restaurant-menu-child\";i:0;s:11:\"uagb\/review\";i:0;s:12:\"uagb\/section\";i:0;s:14:\"uagb\/separator\";i:0;s:11:\"uagb\/slider\";i:0;s:17:\"uagb\/slider-child\";i:0;s:17:\"uagb\/social-share\";i:0;s:23:\"uagb\/social-share-child\";i:0;s:16:\"uagb\/star-rating\";i:0;s:23:\"uagb\/sure-cart-checkout\";i:0;s:22:\"uagb\/sure-cart-product\";i:0;s:15:\"uagb\/sure-forms\";i:0;s:22:\"uagb\/table-of-contents\";i:0;s:9:\"uagb\/tabs\";i:0;s:15:\"uagb\/tabs-child\";i:0;s:18:\"uagb\/taxonomy-list\";i:0;s:9:\"uagb\/team\";i:0;s:16:\"uagb\/testimonial\";i:0;s:14:\"uagb\/wp-search\";i:0;s:19:\"uagb\/instagram-feed\";i:0;s:10:\"uagb\/login\";i:0;s:17:\"uagb\/loop-builder\";i:0;s:18:\"uagb\/loop-category\";i:0;s:20:\"uagb\/loop-pagination\";i:0;s:15:\"uagb\/loop-reset\";i:0;s:16:\"uagb\/loop-search\";i:0;s:14:\"uagb\/loop-sort\";i:0;s:17:\"uagb\/loop-wrapper\";i:0;s:13:\"uagb\/register\";i:0;s:19:\"uagb\/register-email\";i:0;s:24:\"uagb\/register-first-name\";i:0;s:23:\"uagb\/register-last-name\";i:0;s:22:\"uagb\/register-password\";i:0;s:30:\"uagb\/register-reenter-password\";i:0;s:19:\"uagb\/register-terms\";i:0;s:22:\"uagb\/register-username\";i:0;}"],"_thumbnail_id":["23539"],"_seopress_titles_title":["IcSnow BNX Boron Nitride Cooling Yarn | Annie's Smartex"],"_seopress_titles_desc":["Explore IcSnow BNX polyester and nylon yarn development routes, reported fabric-level cool-touch evidence and the separate tests needed for sun-exposed applications."],"_edit_lock":["1792313196:1"],"_edit_last":["1"],"_wp_page_template":["default"],"rwpp_sortorder_99":["0"],"rwpp_sortorder_33":["0"],"rwpp_sortorder_22":["0"],"sp_wc_barcode_type_field":["none"],"total_sales":["0"],"_tax_status":["taxable"],"_tax_class":[""],"_manage_stock":["no"],"_backorders":["no"],"_sold_individually":["no"],"_virtual":["no"],"_downloadable":["no"],"_download_limit":["-1"],"_download_expiry":["-1"],"_stock":[null],"_stock_status":["instock"],"_wc_average_rating":["0"],"_wc_review_count":["0"],"_product_version":["10.2.4"],"sp_wc_barcode_field":[""],"_wpcode_header_scripts":["a:4:{s:14:\"disable_global\";b:0;s:3:\"any\";s:0:\"\";s:7:\"desktop\";s:0:\"\";s:6:\"mobile\";s:0:\"\";}"],"_wpcode_footer_scripts":["a:4:{s:14:\"disable_global\";b:0;s:3:\"any\";s:0:\"\";s:7:\"desktop\";s:0:\"\";s:6:\"mobile\";s:0:\"\";}"],"_wpcode_body_scripts":["a:4:{s:14:\"disable_global\";b:0;s:3:\"any\";s:0:\"\";s:7:\"desktop\";s:0:\"\";s:6:\"mobile\";s:0:\"\";}"],"_wpcode_page_snippets":["a:0:{}"],"_seopress_robots_primary_cat":["none"],"_seopress_redirections_type":["301"],"_seopress_redirections_logged_status":["both"],"_seopress_analysis_target_kw":[""],"site-sidebar-layout":["default"],"ast-site-content-layout":["default"],"site-content-style":["default"],"site-sidebar-style":["default"],"theme-transparent-header-meta":["default"],"astra-migrate-meta-layouts":["set"],"stick-header-meta":["default"],"_elementor_page_assets":["a:0:{}"],"_uag_css_file_name":["uag-css-23544.css"]},"uagb_featured_image_src":{"full":["https:\/\/www.smartexyarn.com\/wp-content\/uploads\/2026\/10\/bnx-yarn-concept-feature.jpg",800,800,false],"thumbnail":["https:\/\/www.smartexyarn.com\/wp-content\/uploads\/2026\/10\/bnx-yarn-concept-feature-150x150.jpg",150,150,true],"medium":["https:\/\/www.smartexyarn.com\/wp-content\/uploads\/2026\/10\/bnx-yarn-concept-feature-300x300.jpg",300,300,true],"medium_large":["https:\/\/www.smartexyarn.com\/wp-content\/uploads\/2026\/10\/bnx-yarn-concept-feature-768x768.jpg",768,768,true],"large":["https:\/\/www.smartexyarn.com\/wp-content\/uploads\/2026\/10\/bnx-yarn-concept-feature.jpg",800,800,false],"1536x1536":["https:\/\/www.smartexyarn.com\/wp-content\/uploads\/2026\/10\/bnx-yarn-concept-feature.jpg",800,800,false],"2048x2048":["https:\/\/www.smartexyarn.com\/wp-content\/uploads\/2026\/10\/bnx-yarn-concept-feature.jpg",800,800,false],"woocommerce_thumbnail":["https:\/\/www.smartexyarn.com\/wp-content\/uploads\/2026\/10\/bnx-yarn-concept-feature-500x500.jpg",500,500,true],"woocommerce_single":["https:\/\/www.smartexyarn.com\/wp-content\/uploads\/2026\/10\/bnx-yarn-concept-feature-600x600.jpg",600,600,true],"woocommerce_gallery_thumbnail":["https:\/\/www.smartexyarn.com\/wp-content\/uploads\/2026\/10\/bnx-yarn-concept-feature-100x100.jpg",100,100,true]},"uagb_author_info":{"display_name":"Annie Kwok","author_link":"https:\/\/www.smartexyarn.com\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"Explore IcSnow\u00ae BNX\u2122 boron nitride cooling yarn development in polyester and nylon routes. Check cool touch, UV protection and solar heat response on the relevant finished fabric.","_links":{"self":[{"href":"https:\/\/www.smartexyarn.com\/wp-json\/wp\/v2\/product\/23544","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.smartexyarn.com\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.smartexyarn.com\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.smartexyarn.com\/wp-json\/wp\/v2\/comments?post=23544"}],"version-history":[{"count":5,"href":"https:\/\/www.smartexyarn.com\/wp-json\/wp\/v2\/product\/23544\/revisions"}],"predecessor-version":[{"id":23564,"href":"https:\/\/www.smartexyarn.com\/wp-json\/wp\/v2\/product\/23544\/revisions\/23564"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.smartexyarn.com\/wp-json\/wp\/v2\/media\/23539"}],"wp:attachment":[{"href":"https:\/\/www.smartexyarn.com\/wp-json\/wp\/v2\/media?parent=23544"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.smartexyarn.com\/wp-json\/wp\/v2\/product_brand?post=23544"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.smartexyarn.com\/wp-json\/wp\/v2\/product_cat?post=23544"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.smartexyarn.com\/wp-json\/wp\/v2\/product_tag?post=23544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}