Company Introduction
Sane ZenChem (Shanghai) Co., Ltd. is a professional Rubber Solution Provider, adhering to the principles of “Enterprising, Efficient, Win-Win,” and dedicated to offering professional and specialized services to the rubber and plastic industry.
I. The Importance of Flame Retardancy
Fires are catastrophic, causing casualties, property damage, environmental harm, and socio-political impacts. Lethal factors include heat, toxic substances, smoke, and oxygen deprivation. Standards like EN13501 and GB31247-2014 set clear requirements for flame retardancy. Flame retardant technology equates to safety and is an irresistible trend.
II. Classification of Flame Retardants
Globally, widely used flame retardants include inorganic types (e.g., Aluminum Hydroxide, Antimony Trioxide) and organic types (e.g., Halogen-based, Phosphorus-based). The European and American markets primarily use ATH, Phosphorus-based, and Brominated flame retardants, while China currently relies more on Brominated types. With growing environmental awareness, flame retardants are developing towards being environmentally friendly, low-toxicity, highly efficient, and multi-functional. The application of halogen free, eco friendly, composite, and highly efficient flame retardants is becoming increasingly widespread.
III. Market Trends of Flame Retardants
Global demand for flame retardants was approximately 2.96 million tons in 2018, with an annual growth rate of about 5%, and the consumption focus is shifting to the Asia-Pacific region. China’s demand reached 1 million tons in 2019, with a market size of about RMB 17.24 billion. Although brominated flame retardants hold a high share, halogen free alternatives are becoming the trend. It is estimated that China’s consumption will reach nearly 1.2 million tons by 2023, with halogen free flame retardants (e.g., alumina compounds, phosphorus-based) accounting for over 60%.
IV. Polymer Combustion and Flame Retardant Mechanisms
Polymer combustion is a complex process involving thermal decomposition producing combustible gases and free radical chain reactions. Flame retardants work through various effects:
Endothermic Effect: e.g., ATH, Borax, decomposing and absorbing heat to cool down.
Covering/Barrier Effect: e.g., Phosphates, forming a protective layer to isolate oxygen and heat.
Dilution Effect: e.g., Ammonium compounds, decomposing to produce non-flammable gases that dilute combustible gases.
Transfer Effect: e.g., Ammonium phosphate, altering the polymer decomposition pathway to promote charring instead of producing combustibles.
Inhibition Effect (Gas Phase Retardancy): e.g., Brominated/Chlorinated flame retardants, trapping free radicals to interrupt the chain reaction.
Synergistic Effect: e.g., combining Antimony Trioxide with halogen compounds significantly enhances flame retardant efficiency.
V. Development Trends and Regulations of Flame Retardants
Brominated flame retardants carry risks of producing toxic, corrosive gases and dioxins, leading to restrictions in Europe. Future development trends include lower toxicity, polymeric brominated types, micro-sizing/smoke suppression/heat resistance for inorganic retardants, and composite synergistic systems. Ideal flame retardants should be efficient, low-toxicity/low-smoke, thermally stable, minimally affecting substrate properties, environmentally friendly, easy to recycle, and cost-effective. Various global regulations exist (e.g., RoHS, WEEE, GADSL).
VI. Application and Practice of Flame Retardants in Rubber
The Oxygen Index (OI) is a key indicator of material flammability; OI > 27% indicates self-extinguishing materials. Halogen-containing rubbers (e.g., CSM, CR) and silicone rubber (VMQ) are inherently flame retardant, whereas EPDM, NBR, IIR, NR often require adding flame retardants.
The GreenThink® FR series of highly efficient composite flame retardants, developed by Sane ZenChem’s subsidiary PowerFlexNew Materials, is an advanced solution addressing these trends:
Mechanism: Upon heating, it expands and forms an intumescent char layer on the material surface, isolating oxygen and heat. It also decomposes to capture free radicals, terminating the chain reaction, while absorbing heat and releasing water and CO₂.
Features: Halogen-free (free of PBDE, Cl, F, Sb, etc.), highly efficient, low smoke, low toxicity, compliant with RoHS/WEEE directives. High efficiency (easily achieves UL V-0), excellent physical properties, low density, good processability (good dispersion, flow, energy saving, reduced cure time).
Product Line: Includes FR21RP (high FR/OI rating), FR35RP (excellent overall performance, UL & RoHS certified), FR97RP (low smoke density, fast curing), etc., suitable for EPDM, NBR, SBR, PVC, and other polymers. As leading Halogen free flame retardant Manufacturers and Halogen free flame retardant Suppliers, we ensure premium quality.
Advantages: Globally sourced raw materials, 100% surface treatment, excellent dispersion, provides integrated solutions for fire retardant for rubber.
Play Video: GreenThink® FR Series – Halogen-Free Flame Retardan]
VII. Introduction to SaneZen Group
SaneZen Group is a leader in green rubber technology innovation. Its subsidiaries include SaneZen Group International (international trade), Powerflex New Materials (R&D and sales), Sanexin Polymer (produces environmentally friendly flame retardants), and Anhui Lixin Rubber Technology (compound manufacturing factory). The group provides a comprehensive range of environmentally friendly rubber raw materials and compound services, covering full systems including raw rubber, plasticizers, functional fillers, silicone-fluorine systems, and functional additives.
As a renowned Halogen free environmentally friendly flame retardant Manufacturers China, we collaborate with global Halogen flame retardant Suppliers to ensure cutting-edge solutions. With a diverse product portfolio and a robust supply chain, we serve numerous industries such as automotive, locomotives, aerospace, electronics and electrical appliances, construction, power, energy, healthcare, and household products. We are a true one-stop rubber solution provider, offering customized solutions along with a service network in Guangzhou, Xiamen, Tianjin, Chengdu, and other locations.
Conclusion
The development of flame retardants continues towards being environmentally friendly, low-toxicity, highly efficient, and multi-functional. Through products like the GreenThink® FR series from Powerflex New Materials, Sane ZenChem Group leads the development of halogen free flame retardants towards super-fining, activation, functionalization, and compounding, providing safe and eco friendly flame retardant solutions for industries like cables, rail transit, electronics, automotive, and oil & coal mining. As dedicated Fire retardant Manufacturers and Halogen free environmentally friendly flame retardant Manufacturers China, we are committed to advancing global safety standards.
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