3.5 Zinc borate hydrate is a Flame Retardant for smoke and afterglow suppressant, and anti-arcing agent in polyvinyl chloride, nylon, epoxy, polyethylene, polypropylene, polyesters, thermoplastic elastomers and rubbers,flame-retardant powder zinc borate at preferential prices.
3.5 Zinc borate hydrate, also known as ZB-2335 flame retardant, is a derivative of zinc borate containing 3.5 molecules of crystalline water. Its appearance is a white powder with a molecular weight of 434.62. It has a triple flame retardant mechanism of heat absorption and cooling, oxygen barrier carbonization, and smoke suppression and toxicity reduction: above 320 ℃, it releases crystalline water to absorb heat and reduce combustion temperature; The generated borate glass layer covers the combustion surface, blocking oxygen and heat transfer; When compounded with halogen or halogen-free flame retardants, it significantly improves flame retardant efficiency and reduces smoke generation. The product complies with international environmental standards such as RoHS and REACH, and is widely used in the formulation design of flame retardant polymer materials.
Physical and Chemical Properties
| Items | Unit | ZB-2335 |
| Appearance | — | White Powder |
| B2O3 | % | 47.0 ～ 49.0 |
| ZnO | % | 37.5 ～ 39.5 |
| Moisture | % | ≤0.3 |
| Loss on Ignition | % | 13.0~15.5（450℃) |
| Whiteness | % | ≥96.0 |
| Particle Size,D50 | µm | ≤7.0 |
| TGA(1%) | ℃ | ≥345 |
| Chloride(Cl- ) | % | ≤0.05 |
| Sulphate(SO42-) | % | ≤0.005 |
application area
1. Plastic industry
General plastic flame retardant: Adding 15-30% to PP, PE, ABS, and compounding with brominated epoxy resin can achieve a flame retardant rating of UL94 V-0 (1.6mm thickness) for materials such as home appliance casings and automotive interior parts.
Halogen free flame retardant system: compounded with magnesium hydroxide in a ratio of 1:3, adding 40-50% to cable materials (such as XLPE), passing the IEC 60332-1 flame retardant test, suitable for scenarios such as rail transit and building wiring.
2. Rubber industry
Tires and seals: Adding 10-15% of nitrile rubber (NBR) to enhance flame retardancy and improve ozone aging resistance, used for automotive engine compartment seals and oil pipeline rubber coatings.
Mining rubber products: Used in combination with chlorinated paraffin for coal mine conveyor belts. Through MT 147-2005 flame retardant testing, the flame retardant performance meets the strict safety requirements underground.
3. Coatings and Building Materials
Steel structure fireproof coating: used as a core filler (with an addition amount of 20-25%) for water-based expansion coatings, it forms an expanded carbon layer in synergy with ammonium polyphosphate at high temperatures, with a fire resistance limit of over 1.5 hours, in compliance with GB 14907 standard.
PVC sheet and wood plastic: Adding 10-15% to WPC (wood plastic composite material), the combustion grade reaches GB 8624 B1 level, while improving weather resistance, suitable for outdoor flooring and indoor decorative panels.
Shandong Taixing New Materials Co., Ltd. fully demonstrates its advantages in the production of zinc borate. We have independently developed advanced production processes that have undergone years of technological innovation and practical optimization. These processes can accurately regulate reaction conditions, achieve strict control over key indicators such as product purity, particle size, and chemical composition, and ensure that each batch of zinc borate has stable and excellent performance. The company has introduced internationally leading production equipment with high automation and significantly improved production efficiency, while ensuring the accuracy and consistency of the production process, effectively reducing product quality fluctuations. In the quality inspection process, we have established a comprehensive and strict quality control system, which includes source testing of raw material procurement, real-time monitoring during the production process, and multiple inspection processes for finished products. We ensure that only zinc borate products that meet international first-class standards can leave the factory, providing customers with worry free quality products.
If you are looking for high-quality zinc borate products, Shandong Taixing is your ideal choice. We warmly welcome you to place an order! Whether you have trial needs for small businesses or large-scale procurement for large enterprises, we will provide comprehensive and personalized services. From professional product consultation, to fast order processing, and efficient logistics delivery, our professional team will follow up throughout the entire process to ensure that every cooperation with you is pleasant and smooth. Choosing Shandong Taixing's zinc borate means choosing quality, professionalism, and peace of mind. Looking forward to working together with you to create a brilliant future!
Contact us immediately for exclusive flame retardant solutions! Empower your product safety with 3.5 zinc borate hydrate and lead the new trend of green flame retardancy!
Get in touch, 24 hours a day, 7 days a week.
Address
Lvye Road West, Diao Town Chemical Industry Park, Mingshui Economic & Technology Development Zone, Zhangqiu, Jinan , China
Tel / WhatsApp
