{"id":2643,"date":"2025-07-29T09:09:52","date_gmt":"2025-07-29T09:09:52","guid":{"rendered":"https:\/\/rifengcable.com\/?p=2643"},"modified":"2025-07-29T09:12:04","modified_gmt":"2025-07-29T09:12:04","slug":"fire-coating-standard-protect-cable-in-800c-fires","status":"publish","type":"post","link":"https:\/\/rifengcable.com\/ja\/fire-coating-standard-protect-cable-in-800c-fires\/","title":{"rendered":"New Fire Coating Standard: Protect Cables in 800\u00b0C Fires"},"content":{"rendered":"<div class=\"row\"  id=\"row-842189\">\n\n\t<div id=\"col-90557010\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_75 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u30c8\u30b0\u30eb\u76ee\u6b21\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u30c8\u30b0\u30eb<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/rifengcable.com\/ja\/fire-coating-standard-protect-cable-in-800c-fires\/#Cable_%E2%80%9CFireproof_Coat%E2%80%9D_The_Invisible_Guardian_Protecting_the_Lifeline_of_Electricity\" >Cable \u201cFireproof Coat\u201d: The Invisible Guardian Protecting the Lifeline of Electricity<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/rifengcable.com\/ja\/fire-coating-standard-protect-cable-in-800c-fires\/#The_Deadly_Threat_of_Cable_Fires\" >The Deadly Threat of Cable Fires<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/rifengcable.com\/ja\/fire-coating-standard-protect-cable-in-800c-fires\/#The_Scientific_Defense_Mechanism_of_Fire_Retardant_Coatings\" >The Scientific Defense Mechanism of Fire Retardant Coatings<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/rifengcable.com\/ja\/fire-coating-standard-protect-cable-in-800c-fires\/#Technical_Upgrades_Under_the_New_National_Standard\" >Technical Upgrades Under the New National Standard<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/rifengcable.com\/ja\/fire-coating-standard-protect-cable-in-800c-fires\/#Precision_Application_Techniques\" >Precision Application Techniques<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/rifengcable.com\/ja\/fire-coating-standard-protect-cable-in-800c-fires\/#Economic_and_Environmental_Advantages\" >Economic and Environmental Advantages<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/rifengcable.com\/ja\/fire-coating-standard-protect-cable-in-800c-fires\/#Home_Improvement_Safety_Upgrade_Options\" >Home Improvement Safety Upgrade Options<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/rifengcable.com\/ja\/fire-coating-standard-protect-cable-in-800c-fires\/#Summary\" >\u6982\u8981<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/rifengcable.com\/ja\/fire-coating-standard-protect-cable-in-800c-fires\/#FAQ\" >\u3088\u304f\u3042\u308b\u3054\u8cea\u554f<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 id=\"cable-fireproof-coat-the-invisible-guardian-protecting-the-lifeline-of-electricity\"><span class=\"ez-toc-section\" id=\"Cable_%E2%80%9CFireproof_Coat%E2%80%9D_The_Invisible_Guardian_Protecting_the_Lifeline_of_Electricity\"><\/span>Cable \u201cFireproof Coat\u201d: The Invisible Guardian Protecting the Lifeline of Electricity<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<blockquote>\n<p>How can a special coating, less than a millimeter thick, create a miraculous escape from blazes?<\/p>\n<\/blockquote>\n<p>In modern buildings, subway tunnels, industrial plants, and other places, <a href=\"https:\/\/rifengcable.com\/ja\/products-electric-cables\/\">cables<\/a>, like the human body\u2019s blood vessels, carry the core task of transmitting electrical energy. Once caught in a fire, these seemingly ordinary cables can become \u201cinvisible drivers\u201d of fire spread. Their outer plastic layer rapidly melts and decomposes at high temperatures, releasing large amounts of heat and toxic fumes. Approximately 40% of the smoke and carbon monoxide in building fires comes from cable combustion.<\/p>\n<p>Even more dangerously, flames can quickly spread along cable lines, damaging the power supply system and causing firefighting equipment to lose power, creating a vicious cycle of \u201cfire spread, power outage, and firefighting failure.\u201d<\/p>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<div class=\"row\"  id=\"row-592772465\">\n\n\t<div id=\"col-1476419962\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_359357838\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"667\" height=\"500\" src=\"https:\/\/rifengcable.com\/wp-content\/uploads\/2025\/07\/u14757567602545301136fm253fmtautoapp138fJPEG.webp\" class=\"attachment-original size-original\" alt=\"Cable &quot;Fireproof Coat&quot;\" srcset=\"https:\/\/rifengcable.com\/wp-content\/uploads\/2025\/07\/u14757567602545301136fm253fmtautoapp138fJPEG.webp 667w, https:\/\/rifengcable.com\/wp-content\/uploads\/2025\/07\/u14757567602545301136fm253fmtautoapp138fJPEG-300x225.webp 300w, https:\/\/rifengcable.com\/wp-content\/uploads\/2025\/07\/u14757567602545301136fm253fmtautoapp138fJPEG-16x12.webp 16w, https:\/\/rifengcable.com\/wp-content\/uploads\/2025\/07\/u14757567602545301136fm253fmtautoapp138fJPEG-600x450.webp 600w\" sizes=\"auto, (max-width: 667px) 100vw, 667px\" title=\"\">\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_359357838 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<p>Coating cables with fireproof coatings is like draping these \u201clifelines\u201d of electricity with a protective armor less than a millimeter thick. This microscopic line of defense received a technological upgrade in 2025: the newly released national mandatory standard GB 28374-2025 \u201cFire-retardant Coatings for Cables\u201d will be implemented in June 2026, providing a stronger barrier for cable safety.<\/p>\n<h3 id=\"the-deadly-threat-of-cable-fires\"><span class=\"ez-toc-section\" id=\"The_Deadly_Threat_of_Cable_Fires\"><\/span>The Deadly Threat of Cable Fires<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The outer layer of cables is typically made of plastics (such as PVC and polyethylene). In a fire, these materials serve not only as fuel but also as deadly gas generators. When heated, they decompose, releasing toxic gases such as hydrogen chloride and dioxins. Over 70% of casualties in fires are caused by asphyxiation or poisoning from smoke.<\/p>\n<p>In high-rise buildings, the conduit shafts where cables are laid act as natural \u201cchimneys,\u201d accelerating the vertical spread of flames and smoke. Statistics show that in cable fires without fire prevention measures, the average fire spreads more than three times faster than that of ordinary combustible materials, and widespread combustion can occur in just minutes.<\/p>\n<h3 id=\"the-scientific-defense-mechanism-of-fire-retardant-coatings\"><span class=\"ez-toc-section\" id=\"The_Scientific_Defense_Mechanism_of_Fire_Retardant_Coatings\"><\/span>The Scientific Defense Mechanism of Fire Retardant Coatings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The protective power of fire retardant coatings stems from their sophisticated chemical composition and physical structure. When exposed to flames, the coating\u2019s aluminum hydroxide, expanded graphite, and other substances immediately activate a triple defense mechanism:<\/p>\n<ul>\n<li>Flame Retardancy and Smoke Suppression: Absorbs heat and releases flammable gases, catalyzing the formation of a dense carbon layer on the plastic surface, reducing toxic smoke emissions by over 50%.<\/li>\n<li>Heat Insulation and High-Temperature Resistance: At temperatures above 200\u00b0C, the intumescent coating rapidly expands to 50 times its original volume, forming a porous carbon layer that can isolate flames exceeding 800\u00b0C.<\/li>\n<li>Circuit Integrity Guarantee: In critical locations like data centers and hospitals, emergency lighting, smoke exhaust systems, and other circuits remain operational for over two hours, creating prime time for evacuation.<\/li>\n<\/ul>\n<h3 id=\"technical-upgrades-under-the-new-national-standard\"><span class=\"ez-toc-section\" id=\"Technical_Upgrades_Under_the_New_National_Standard\"><\/span>Technical Upgrades Under the New National Standard<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>**GB 28374-2025 \u201cFire Retardant Coatings for Cables,\u201d released in July 2025, sets higher standards for cable fire protection. The new standard stipulates that flame retardancy testing requires measuring the charring height of the cable after a 40-minute continuous burning period. It also specifies:<\/p>\n<ul>\n<li>Charring height measurements must be accurate to two decimal places<\/li>\n<li>Key information such as the test substrate type and coating thickness must be fully recorded<\/li>\n<li>The coating must pass the \u201chydrocarbon fire test\u201d\u2014which simulates the sudden increase in temperature experienced by petrochemical fires\u2014without peeling or failure within 30 minutes.<\/li>\n<\/ul>\n<p>These stringent requirements are driving companies to develop higher-performance products. For example, ceramic-based fire-retardant coatings, which can withstand temperatures of 1200\u00b0C, are specifically designed for use in refineries and nuclear power plants; and water-based environmentally friendly coatings, suitable for confined spaces like subways and shopping malls, to prevent chemical contamination in the early stages of a fire.<\/p>\n<h3 id=\"precision-application-techniques\"><span class=\"ez-toc-section\" id=\"Precision_Application_Techniques\"><\/span>Precision Application Techniques<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The effectiveness of fire-retardant coatings is highly dependent on standardized application procedures:<\/p>\n<ol>\n<li>Surface Treatment: Thoroughly remove dust and oil stains from the cable surface, ensuring the substrate is dry and clean.<\/li>\n<li>Layered Coating: For plastic or rubber-sheathed cables, apply directly to the cable with at least five applications, leaving 24 hours between each application.<\/li>\n<li>Thickness Control: The final coating thickness should reach 0.5-1mm (approximately 1.5kg\/m\u00b2 of coating consumption).<\/li>\n<li>Special Treatment: Oil-paper insulated cables should be wrapped with glass cloth before coating. In humid environments, a topcoat varnish should be applied.<\/li>\n<\/ol>\n<p>It is important to note that while the coating is still wet, it must be strictly protected from water, sunlight, and bending. Any damage can become a fatal weakness in the fire protection chain.<\/p>\n<h3 id=\"economic-and-environmental-advantages\"><span class=\"ez-toc-section\" id=\"Economic_and_Environmental_Advantages\"><\/span>Economic and Environmental Advantages<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Compared to traditional protection measures such as fire-resistant troughs and fire-resistant bridges, applying fire-retardant coatings can increase cable current carrying capacity by 15%-20%, avoiding the increased energy consumption associated with enclosed protection. In a 2020 data center fire, cables coated with fire-retardant coatings protected 80% of servers not exposed to direct flames, preventing economic losses exceeding 200 million yuan.<\/p>\n<p>Environmentally friendly coatings also offer ecological benefits: water-based environmentally friendly coatings achieve low VOC emissions, while the integrated anti-corrosion and fire-resistant coating used on submarine cables protects against both seawater erosion and welding sparks, significantly extending the cable\u2019s service life.<\/p>\n<h3 id=\"home-improvement-safety-upgrade-options\"><span class=\"ez-toc-section\" id=\"Home_Improvement_Safety_Upgrade_Options\"><\/span>Home Improvement Safety Upgrade Options<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Low-smoke, halogen-free, flame-retardant electrical wiring is becoming the new safety standard for home renovations. Made of polyolefin, this type of wiring boasts a smoke transmittance exceeding 50% during combustion (compared to 20% for standard PVC wiring) and releases less than 0.5% hydrogen chloride gas, reducing the risk of toxic gases by over 90% compared to traditional wiring.<\/p>\n<p>For families with elderly, children, or those with respiratory problems, this means significantly longer fire escape times. Twelve cities, including Beijing and Shanghai, have introduced subsidies of up to 5% of the total renovation cost for homes equipped with this type of wiring to promote safety upgrades.<\/p>\n<hr \/>\n<h2 id=\"summary\"><span class=\"ez-toc-section\" id=\"Summary\"><\/span>\u6982\u8981<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A fire-retardant coating, thinner than a coin, provides a lifeline against blazing flames. From the newly released national mandatory standard GB 28374-2025, to the strict requirements for cable channel construction in Chengdu\u2019s \u201cTwo Guidelines and One Method,\u201d to the widespread adoption of low-smoke, halogen-free wiring in home renovations, China is building a multi-level fire protection system for cables.<\/p>\n<p>When the fire-retardant coating solidifies on the cable surface, it becomes more than just a line of technical specification; it embodies the safety philosophy of \u201cpreventing disasters before they occur.\u201d This microscopic barrier, invisible to the naked eye, will become an invisible guardian in times of crisis, safeguarding the lifeblood of modern society\u2019s electricity supply\u2014because the most reliable safety often lies in the mere millimeters of forethought before disaster strikes.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>\u3088\u304f\u3042\u308b\u3054\u8cea\u554f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><strong>Q1: Why are cables dangerous in fires?<\/strong><br \/>A: Burning cables release toxic smoke (causing 70% fire deaths) and accelerate flame spread 3x faster.<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Q2: How does fireproof coating work?<\/strong><br \/>A: It expands 50x at 200\u00b0C, forms heat-insulating char layer, and cuts toxic smoke by 50%.<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Q3: What\u2019s new in GB 28374-2025 standard?<\/strong><br \/>A: Requires hydrocarbon fire tests (1200\u00b0C), 40min burn resistance, and precise carbonization records.<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Q4: Is this coating suitable for homes?<\/strong><br \/>A: Yes. Low-smoke cables (50%+ light transmittance) with coatings reduce toxins by 90% for safer escapes.<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>Q5: How thick is the fireproof layer?<\/strong><br \/>A: Only 0.5-1mm thick (1.5kg\/m\u00b2), but withstands 800\u00b0C for 2+ hours.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u30b1\u30fc\u30d6\u30eb\u3092\u8010\u706b\u6027\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u3067\u8986\u3046\u3053\u3068\u306f\u3001\u96fb\u6c17\u306e\u3053\u308c\u3089\u306e\u300c\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\u300d\u30921\u30df\u30ea\u30e1\u30fc\u30c8\u30eb\u4ee5\u4e0b\u306e\u4fdd\u8b77\u88c5\u7532\u3067\u8986\u3046\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002\u3053\u306e\u5fae\u7d30\u306a\u9632\u5fa1\u7dda\u306f2025\u5e74\u306b\u6280\u8853\u7684\u306a\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3092\u53d7\u3051\u307e\u3057\u305f\u3002\u65b0\u305f\u306b\u767a\u8868\u3055\u308c\u305f\u56fd\u5bb6\u5fc5\u9808\u898f\u683cGB 28374-2025\u300c\u30b1\u30fc\u30d6\u30eb\u7528\u96e3\u71c3\u6027\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u300d\u304c2026\u5e746\u6708\u306b\u65bd\u884c\u3055\u308c\u3001\u30b1\u30fc\u30d6\u30eb\u306e\u5b89\u5168\u6027\u306b\u5bfe\u3059\u308b\u3088\u308a\u5f37\u529b\u306a\u969c\u58c1\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u30b1\u30fc\u30d6\u30eb\u706b\u707d\u306e\u81f4\u547d\u7684\u306a\u8105\u5a01 \u30b1\u30fc\u30d6\u30eb\u306e\u5916\u5c64\u306f\u901a\u5e38\u3001\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\uff08PVC\u3084\u30dd\u30ea\u30a8\u30c1\u30ec\u30f3\u306a\u3069\uff09\u3067\u3067\u304d\u3066\u3044\u307e\u3059\u3002\u706b\u707d\u304c\u767a\u751f\u3059\u308b\u3068\u3001\u3053\u308c\u3089\u306e\u6750\u6599\u306f\u71c3\u6599\u3068\u3057\u3066\u3060\u3051\u3067\u306a\u304f\u3001\u81f4\u547d\u7684\u306a\u30ac\u30b9\u767a\u751f\u88c5\u7f6e\u3068\u3057\u3066\u3082\u6a5f\u80fd\u3057\u307e\u3059\u3002\u52a0\u71b1\u3055\u308c\u308b\u3068\u5206\u89e3\u3057\u3001\u5869\u5316\u6c34\u7d20\u3084\u30c0\u30a4\u30aa\u30ad\u30b7\u30f3\u306a\u3069\u306e\u6709\u6bd2\u30ac\u30b9\u3092\u653e\u51fa\u3057\u307e\u3059\u300270%\u4ee5\u4e0a\u304c[...]","protected":false},"author":3,"featured_media":2644,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2643","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/rifengcable.com\/ja\/wp-json\/wp\/v2\/posts\/2643","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rifengcable.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rifengcable.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rifengcable.com\/ja\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/rifengcable.com\/ja\/wp-json\/wp\/v2\/comments?post=2643"}],"version-history":[{"count":2,"href":"https:\/\/rifengcable.com\/ja\/wp-json\/wp\/v2\/posts\/2643\/revisions"}],"predecessor-version":[{"id":2646,"href":"https:\/\/rifengcable.com\/ja\/wp-json\/wp\/v2\/posts\/2643\/revisions\/2646"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rifengcable.com\/ja\/wp-json\/wp\/v2\/media\/2644"}],"wp:attachment":[{"href":"https:\/\/rifengcable.com\/ja\/wp-json\/wp\/v2\/media?parent=2643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rifengcable.com\/ja\/wp-json\/wp\/v2\/categories?post=2643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rifengcable.com\/ja\/wp-json\/wp\/v2\/tags?post=2643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}