{"id":4528,"date":"2026-07-31T01:38:56","date_gmt":"2026-07-30T17:38:56","guid":{"rendered":"https:\/\/sanezenrubber.com\/?p=4528"},"modified":"2026-07-31T01:38:56","modified_gmt":"2026-07-30T17:38:56","slug":"halogenfree-flame-retardants-factory-achieving-ul94-v0-performance-without-compromising-mechanical-properties-in-epdm-nbr-and-silicone-sealants","status":"publish","type":"post","link":"https:\/\/sanezenrubber.com\/ru\/technical-communication\/halogenfree-flame-retardants-factory-achieving-ul94-v0-performance-without-compromising-mechanical-properties-in-epdm-nbr-and-silicone-sealants\/4528\/","title":{"rendered":"HalogenFree Flame Retardants\u00a0factory : Achieving UL94 V0 Performance Without Compromising Mechanical Properties in EPDM, NBR, and Silicone Sealants"},"content":{"rendered":"

The global flame retardant elastomer market reached USD 2.84 billion in 2025 and is projected to expand to USD 4.62 billion by 2033, representing a compound annual growth rate of 6.2%. Behind this growth lies a fundamental industry challenge: how to achieve UL94 V-0 flame retardancy in rubber compounds and silicone sealants without sacrificing tensile strength, heat aging resistance, compression set, or processability.<\/p>\n\n\n\n

Traditional halogenated flame retardants deliver high efficiency but face increasing regulatory restrictions under REACH and RoHS. Conventional halogen-free alternatives often require loadings of 80\u2013130 phr, degrading mechanical properties and compromising extrusion quality. As a leading <\/u>FR98 RP<\/strong><\/u><\/strong>,<\/u><\/a> Sanexin Polymer has developed the GreenThinking\u00ae FR Series to address these challenges through three distinct technological approaches: ultra-fine processing, surface modification, and synergistic compounding.<\/p>\n\n\n\n

Sanexin Polymer’s GreenThinking\u00ae FR Series\u2014comprising FR99RP, FR98RP, and FR76RP\u2014addresses this challenge through three distinct technological approaches: ultra-fine processing, surface modification, and synergistic compounding. As a recognized UL94 V0 Flame Retardant Manufacturer in China<\/strong><\/u><\/strong><\/a>, Sanexin delivers proven performance across EPDM, NBR, and silicone sealant formulations. This technical report presents comparative performance data across EPDM, NBR, and silicone sealant formulations, enabling compounders and manufacturers to select the optimal flame retardant for their specific application requirements.<\/p>\n\n\n\n

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1. What Is the Halogen-Free Flame Retardant Challenge in Rubber Compounding?<\/p>\n\n\n\n

Definition: The halogen-free flame retardant challenge refers to the technical difficulty of achieving high-level flame retardancy (UL94 V-0) in rubber and elastomer compounds without using halogenated chemicals (PBBs, PBDEs, chlorine, fluorine, or antimony trioxide), while simultaneously maintaining mechanical properties, processability, and long-term durability.<\/p>\n\n\n\n

1.1 Why Are Halogenated Flame Retardants Being Phased Out?<\/p>\n\n\n\n

Halogenated flame retardants\u2014particularly brominated and chlorinated compounds\u2014have been the industry standard for decades due to their high efficiency at low loadings. However, their combustion releases toxic and corrosive byproducts including hydrogen halides, dioxins, and furans. Regulatory pressure has intensified:<\/p>\n\n\n\n