{"id":3378,"date":"2026-06-05T07:15:57","date_gmt":"2026-06-05T07:15:57","guid":{"rendered":"https:\/\/www.sheenmaterials.com\/?p=3378"},"modified":"2026-06-05T07:15:58","modified_gmt":"2026-06-05T07:15:58","slug":"can-sheens-af1000-silicone-free-thermal-pad-meet-130c-thermal-requirements-in-ev-battery-packs","status":"publish","type":"post","link":"https:\/\/www.sheenmaterials.com\/ru\/can-sheens-af1000-silicone-free-thermal-pad-meet-130c-thermal-requirements-in-ev-battery-packs\/","title":{"rendered":"Can SHEEN\u2019s AF1000 Silicone-Free Thermal Pad Meet 130\u00b0C+ Thermal Requirements in EV Battery Packs?"},"content":{"rendered":"

Thermal design for EV battery packs has one critical mission: move heat away from the cells quickly, safely, and reliably \u2014 without compromising electrical insulation or mechanical integrity.<\/strong><\/p>\n\n\n\n

As EV battery architecture moves toward CTP battery packs<\/strong> \u0438 800V high-voltage platforms<\/strong>, the thermal interface system is no longer a simple \u201cheat transfer layer.\u201d It has become a safety-critical component that must handle heat, voltage, vibration, flame resistance, contamination control, and long-term aging at the same time.<\/p>\n\n\n\n

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\"EV<\/div>\n<\/div>\n <\/div><\/div>\n\n\n\n

The following table summarizes the key thermal management requirements for modern EV battery packs.<\/p>\n\n\n\n

Performance Dimension<\/th>Key Requirement \/ Target<\/th>\u041f\u043e\u0447\u0435\u043c\u0443 \u044d\u0442\u043e \u0432\u0430\u0436\u043d\u043e<\/th><\/tr><\/thead>
\u26a1 High Thermal Conductivity<\/td>Thermal adhesive \/ thermal pad:<\/strong> mainstream demand is around 3\u20136 W\/m\u00b7K<\/strong>, with some applications requiring 5 W\/m\u00b7K or higher<\/strong>.Thermally conductive plastics:<\/strong> typically around 1.5\u20133 W\/m\u00b7K<\/strong>, and can approach aluminum-like performance through structural design.Phase change materials (PCM):<\/strong> typically around 5\u201315 W\/m\u00b7K<\/strong>, often enhanced with graphene or other high-performance fillers.<\/td>Heat generated by battery cells must be transferred rapidly to cooling components such as liquid cooling plates, helping control the maximum cell temperature within a safer range of around 50\u00b0C<\/strong>.<\/td><\/tr>
\ud83d\udee1\ufe0f High-Voltage Electrical Insulation<\/td>Breakdown voltage:<\/strong> typically required to be >5 kV\/mm<\/strong>.Volume resistivity:<\/strong> typically >10\u00b9\u00b3 \u03a9\u00b7cm<\/strong>.<\/td>800V EV platforms place much higher demands on insulation. Thermal materials must transfer heat while preventing high-voltage breakdown and electrical safety failures.<\/td><\/tr>
\ud83d\udd25 Flame Retardancy and Temperature Resistance<\/td>Flame rating:<\/strong> should meet UL94 V-0<\/strong>.Operating temperature:<\/strong> stable performance from -40\u00b0C to 150\u00b0C<\/strong>.<\/td>In a thermal runaway scenario, the material must not accelerate fire spread. The thermal interface material itself must not become a weak link in battery safety.<\/td><\/tr>
\ud83d\udd27 Reliable Mechanical Performance<\/td>Bonding strength:<\/strong> structural thermal adhesives often require shear strength >8 MPa<\/strong>.Flexibility:<\/strong> elongation at break typically >100%<\/strong> to absorb vibration and shock.Low thermal resistance:<\/strong> compression behavior is critical; contact resistance is often reduced by controlled compression, such as a 2.0 mm deflection<\/strong> design.<\/td>The material must remain mechanically stable under vehicle vibration while filling micro-gaps between cells and cooling plates, reducing interface thermal resistance.<\/td><\/tr>
\u2696\ufe0f Lightweight Design<\/td>Low density:<\/strong> target is typically below 3 g\/cm\u00b3<\/strong>, with some advanced materials reaching around 2.3 g\/cm\u00b3<\/strong>.<\/td>Battery pack weight directly affects vehicle range. Lightweight thermal materials, such as thermally conductive plastics, can reduce weight by 25%\u201345%<\/strong> compared with aluminum structures.<\/td><\/tr>
\u23f3 Long-Term Reliability<\/td>Low volatile content:<\/strong> for example, low-molecular siloxane content <100 ppm<\/strong>.Aging resistance:<\/strong> should pass 1000+ hours<\/strong> of high-temperature\/high-humidity aging, thermal cycling, or related reliability tests.<\/td>Volatile substances can contaminate cells, connectors, BMS circuits, or cause materials to dry out and crack. EV battery thermal materials must survive a service life of 10 years or more<\/strong>.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

According to the AF1000 silicone-free thermal pad datasheet, AF1000 can meet most of the critical thermal management requirements for EV battery packs<\/strong>, especially in thermal conductivity, flame retardancy, silicone-free contamination control, and reliability.<\/p>\n\n\n\n

However, one point must be treated with engineering caution: AF1000\u2019s breakdown voltage is slightly below the >5 kV\/mm benchmark often expected in some high-end 800V battery platforms.<\/strong> For conventional voltage platforms or applications with additional insulation design, it can still be a very strong candidate.<\/p>\n\n\n\n

Key Technical Parameters: AF1000<\/a> vs. EV Battery Pack Requirements<\/h2>\n\n\n\n
Performance Dimension<\/th>Industry Requirement<\/th>AF1000 Tested Value<\/th>Compliance<\/th>Engineering Comment<\/th><\/tr><\/thead>
\ud83d\udd25 Thermal Conductivity<\/td>Mainstream demand: 3\u20136 W\/m\u00b7K<\/strong><\/td>10,0 \u0412\u0442\/\u043c-\u041a<\/strong><\/td>\u2705 Exceeds Requirement<\/td>Far beyond mainstream thermal pad requirements. This gives AF1000 powerful heat transfer capability for battery pack thermal management.<\/td><\/tr>
\ud83d\udee1\ufe0f Breakdown Voltage<\/td>>5 kV\/mm<\/strong><\/td>\u22654 kV\/mm<\/strong><\/td>\u26a0\ufe0f Slightly Below<\/td>This is the key parameter to verify for 800V platforms. It is lower than the ideal high-voltage benchmark, but still strong for many standard EV battery applications.<\/td><\/tr>
\ud83d\udd25 Flame Retardancy<\/td>UL94 V-0<\/strong><\/td>V-0<\/strong><\/td>\u2705 Meets Requirement<\/td>Provides strong flame-retardant performance and helps reduce fire propagation risk.<\/td><\/tr>
\ud83c\udf21\ufe0f Operating Temperature<\/td>-40\u00b0C to 150\u00b0C<\/strong><\/td>-40\u00b0C to 150\u00b0C<\/strong><\/td>\u2705 Meets Requirement<\/td>Fully covers the typical extreme operating temperature range of EV battery packs.<\/td><\/tr>
\u26a1 Volume Resistivity<\/td>Typically >10\u00b9\u00b3 \u03a9\u00b7cm<\/strong><\/td>1\u00d710\u00b9\u00b2 \u03a9\u00b7cm<\/strong><\/td>\u26a0\ufe0f Application-Dependent<\/td>Provides strong electrical insulation, but should be verified against the exact insulation requirement of the battery platform.<\/td><\/tr>
\ud83e\uddea Silicone-Free \/ Low Volatility<\/td>No siloxane volatility<\/td>Silicone-oil-free \/ siloxane-free<\/strong><\/td>\u2705 Core Advantage<\/td>Reduces the risk of contamination to BMS circuits, high-voltage connectors, and sensitive electronic components.<\/td><\/tr>
\u23f3 Long-Term Reliability<\/td>Pass 1000h+ aging tests<\/strong><\/td>Passed 1000-hour reliability testing<\/strong><\/td>\u2705 Meets Requirement<\/td>Supports long-term performance stability across the EV service life.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>\n\n\n\n

\u0422\u0438\u043f \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430<\/th>\u0421\u0442\u0430\u043d\u0434\u0430\u0440\u0442 \u0438\u0441\u043f\u044b\u0442\u0430\u043d\u0438\u0439<\/th>AF1000 (2 mm)<\/a><\/th><\/tr><\/thead>
\u0426\u0432\u0435\u0442<\/td>\u0412\u0438\u0437\u0443\u0430\u043b\u044c\u043d\u044b\u0439<\/td>\u0421\u0435\u0440\u044b\u0439<\/td><\/tr>
\u0422\u043e\u043b\u0449\u0438\u043d\u0430 (\u043c\u043c)<\/td>ASTM D374<\/td>1\u20132 mm<\/td><\/tr>
Density (g\/cm\u00b3)<\/td>ASTM D792<\/td>3.3 \u00b1 0.2<\/td><\/tr>
\u0422\u0435\u043f\u043b\u043e\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u043e\u0441\u0442\u044c (\u0412\u0442\/\u043c-\u041a)<\/td>ASTM D5470<\/td>10 \u00b1 1<\/td><\/tr>
Hardness (Shore 00)<\/td>ASTM D2240<\/td>50\u201365<\/td><\/tr>
Breakdown Voltage (kV, @AC)<\/td>ASTM D149<\/td>\u2265 4<\/td><\/tr>
\u0412\u043e\u0441\u043f\u043b\u0430\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0441\u0442\u044c<\/td>UL94<\/td>V-0<\/td><\/tr>
Volume Resistivity (\u03a9\u00b7cm, @250V)<\/td>ASTM D257<\/td>\u2265 10\u00b9\u00b2<\/td><\/tr>
Dielectric Constant (F\/m, @1MHz)<\/td>ASTM D150<\/td>\u2265 6<\/td><\/tr>
Application Temperature (\u00b0C)<\/td>\/<\/td>-40 ~ 150<\/td><\/tr>
Thermal Resistance (\u00b0C\u00b7in\u00b2\/W, @50psi)<\/td>ASTM D5470<\/td>\u2264 0.13<\/td><\/tr>
RoHS<\/td>IEC 62321<\/td>PASS<\/td><\/tr>
\u0413\u0430\u043b\u043e\u0433\u0435\u043d<\/td>EN 14582<\/td>PASS<\/td><\/tr>
REACH<\/td>EN 14372<\/td>PASS<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n
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\"AF1000<\/div>\n\n\n\n
<\/div><\/div>\n<\/div>\n <\/div><\/div>\n\n\n\n

Three Core Advantages of AF1000<\/a>: Stronger Heat Transfer, Cleaner Chemistry, Safer Battery Design<\/h2>\n\n\n\n
    \n
  • High thermal conductivity \u2014 10.0 W\/m\u00b7K<\/strong>
    With a thermal conductivity of 10,0 \u0412\u0442\/\u043c-\u041a<\/strong>, AF1000 is far above many conventional 3\u20136 W\/m\u00b7K thermal pads on the market. This means it can transfer heat from battery cells to the liquid cooling plate much faster, helping suppress temperature rise and improve cell-to-cell thermal consistency.<\/li>\n\n\n\n
  • Silicone-free formulation<\/strong>
    This is one of AF1000\u2019s most important differentiators. Unlike traditional silicone-based thermal pads, AF1000 contains no silicone oil and no volatile siloxane compounds<\/strong>. That matters because silicone migration can contaminate precision BMS circuits, high-voltage connectors, and other sensitive electrical interfaces. In EV battery packs, contamination is not a small defect \u2014 it can become a serious reliability risk.<\/li>\n\n\n\n
  • Excellent flame retardancy<\/strong>
    AF1000 reaches UL94 V-0<\/strong> flame-retardant performance. In battery safety design, this is critical. When thermal runaway risk appears, the thermal interface material must help control the situation \u2014 not make it worse.<\/li>\n<\/ul>\n\n\n\n

    Key Features: Why AF1000 Is a Strong Choice for EV Battery Packs<\/h2>\n\n\n\n

    Beyond thermal conductivity alone, AF1000 fits EV battery pack applications because it addresses several high-priority engineering concerns at the same time.<\/p>\n\n\n\n

      \n
    • \ud83d\udd27 Silicone-free design<\/strong>
      AF1000 uses an acrylic resin-based system and contains no silicone components. This helps eliminate the risk of siloxane volatilization or silicone oil bleeding, reducing potential contamination-related failures in circuits, connectors, and electronic control systems.<\/li>\n\n\n\n
    • \u26a1 High-performance heat transfer<\/strong>
      Its 10.0 W\/(m\u00b7K)<\/strong> thermal conductivity enables efficient heat transfer from battery cells to the cooling system, supporting stable battery pack thermal management under demanding operating conditions.<\/li>\n\n\n\n
    • \ud83d\udee1\ufe0f High reliability and safety<\/strong>
      AF1000 provides strong electrical insulation performance and UL94 V-0 flame retardancy<\/strong>, both of which are essential for EV battery systems where safety margins cannot be compromised.<\/li>\n\n\n\n
    • \ud83c\udfaf Strong application fit<\/strong>
      SHEEN\u2019s AF series is positioned for applications such as \u0411\u0430\u0442\u0430\u0440\u0435\u0439\u043d\u044b\u0435 \u0431\u043b\u043e\u043a\u0438 \u0434\u043b\u044f \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043c\u043e\u0431\u0438\u043b\u0435\u0439<\/strong> \u0438 BDU battery disconnect units<\/strong>. From a product positioning perspective, AF1000 is highly aligned with the thermal, electrical, and reliability requirements of EV battery systems.<\/li>\n<\/ul>\n\n\n\n
      \n
      \n
      \n
      <\/div>\n <\/div><\/div>\n<\/div>\n <\/div><\/div>\n\n\n\n

      <\/p>","protected":false},"excerpt":{"rendered":"

      AF1000 is a thermal management solution for battery packs that offers high thermal conductivity, high safety, and zero contamination.<\/p>","protected":false},"author":1,"featured_media":3381,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"#gspb_row-id-gsbp-2d9e455,#gspb_row-id-gsbp-56aca1d,#gspb_row-id-gsbp-c2b576f,#gspb_row-id-gsbp-f1885ad,#gspb_row-id-gsbp-fa01ecf{justify-content:space-between;margin-top:0;margin-bottom:0;display:flex;flex-wrap:wrap}#gspb_row-id-gsbp-56aca1d>.gspb_row__content{display:flex;justify-content:space-between;margin:0 auto;width:100%;flex-wrap:wrap}.gspb_row{position:relative}div[id^=gspb_col-id]{box-sizing:border-box;position:relative;padding:var(--gs-row-column-padding, 15px min(3vw, 20px))}#gspb_col-id-gsbp-7f21af9.gspb_row__col--12{width:100%}@media (max-width:575.98px){#gspb_col-id-gsbp-7f21af9.gspb_row__col--12{width:100%}}#gspb_row-id-gsbp-f1885ad>.gspb_row__content{display:flex;justify-content:space-between;margin:0 auto;width:100%;flex-wrap:wrap}body.gspb-bodyfront #gspb_row-id-gsbp-56aca1d>.gspb_row__content,body.gspb-bodyfront #gspb_row-id-gsbp-f1885ad>.gspb_row__content{width:var(--theme-container-width, 1200px);max-width:var(--theme-normal-container-max-width, 1200px)}#gspb_col-id-gsbp-18c583f.gspb_row__col--12{width:100%}@media (max-width:575.98px){#gspb_col-id-gsbp-18c583f.gspb_row__col--12{width:100%}}#gspb_row-id-gsbp-2d9e455>.gspb_row__content{display:flex;justify-content:space-between;margin:0 auto;width:100%;flex-wrap:wrap}#gspb_col-id-gsbp-50b501c.gspb_row__col--12{width:100%}@media (max-width:575.98px){#gspb_col-id-gsbp-50b501c.gspb_row__col--12{width:100%}}#gspb_row-id-gsbp-c2b576f>.gspb_row__content,#gspb_row-id-gsbp-fa01ecf>.gspb_row__content{display:flex;justify-content:space-between;margin:0 auto;width:100%;flex-wrap:wrap}body.gspb-bodyfront #gspb_row-id-gsbp-2d9e455>.gspb_row__content,body.gspb-bodyfront #gspb_row-id-gsbp-c2b576f>.gspb_row__content,body.gspb-bodyfront #gspb_row-id-gsbp-fa01ecf>.gspb_row__content{width:var(--theme-container-width, 1200px);max-width:var(--theme-normal-container-max-width, 1200px)}#gspb_col-id-gsbp-67cc0d9.gspb_row__col--12{width:100%}@media (max-width:575.98px){#gspb_col-id-gsbp-67cc0d9.gspb_row__col--12{width:100%}}#gspb_image-id-gsbp-4f47bd1 img,#gspb_image-id-gsbp-88ecd13 img{vertical-align:top;display:inline-block;box-sizing:border-box;max-width:100%;height:auto}","footnotes":""},"categories":[36],"tags":[92,93,85],"class_list":["post-3378","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-use-guides","tag-af1000","tag-ev-battery-packs","tag-silicone-free-thermal-pad"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"_links":{"self":[{"href":"https:\/\/www.sheenmaterials.com\/ru\/wp-json\/wp\/v2\/posts\/3378","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sheenmaterials.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sheenmaterials.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sheenmaterials.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sheenmaterials.com\/ru\/wp-json\/wp\/v2\/comments?post=3378"}],"version-history":[{"count":2,"href":"https:\/\/www.sheenmaterials.com\/ru\/wp-json\/wp\/v2\/posts\/3378\/revisions"}],"predecessor-version":[{"id":3382,"href":"https:\/\/www.sheenmaterials.com\/ru\/wp-json\/wp\/v2\/posts\/3378\/revisions\/3382"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sheenmaterials.com\/ru\/wp-json\/wp\/v2\/media\/3381"}],"wp:attachment":[{"href":"https:\/\/www.sheenmaterials.com\/ru\/wp-json\/wp\/v2\/media?parent=3378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sheenmaterials.com\/ru\/wp-json\/wp\/v2\/categories?post=3378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sheenmaterials.com\/ru\/wp-json\/wp\/v2\/tags?post=3378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}