Anhydrous Zinc Borate

The anhydrous zinc borate produced by Taixing Manufacturing is a highly stable flame retardant produced through advanced high-temperature calcination and surface passivation processes, which completely eliminate the crystallization water in traditional zinc borate. Specially produced to address core pain points such as foaming, porosity, decreased electrical performance, and flame retardant failure caused by water release in high-temperature processed polymers (such as PEEK, PPS), high-temperature cured powder coatings, special adhesives, and high-performance composite materials.

Core strengths

·Ultimate thermal stability: The starting temperature of thermal weight loss is>380 ° C, surpassing all hydrated zinc borate and perfectly matching the high-temperature engineering plastic processing window.

·Eliminate processing defects: Zero moisture release, completely eliminate the "vapor pressure effect" during high-temperature processing, prevent the production of bubbles and pores in the product, and ensure excellent electrical performance.

·High surface hardness and weather resistance: Decomposition products form a denser inorganic ceramicization barrier, endowing coatings and composite materials with higher surface hardness, wear resistance, and resistance to moisture and heat aging.

·Broad spectrum and efficient synergy: synergistically enhanced with phosphorus based, nitrogen based, and inorganic flame retardants, exhibiting flame retardant, smoke suppression, and carbonization promoting effects over a wider temperature range.

Mechanism of action

1. Overcome the problem of "steam pressure" in high-temperature processing

During injection molding, high-temperature extrusion, or powder coating curing (often>200 ° C), the crystalline water released by traditional hydrated zinc borate will vaporize instantly. Local high pressure is generated inside the melt or coating, resulting in:

·Internal bubbles and pores in products: affecting mechanical strength, sealing, and appearance.

·Surface "pinholes" and orange peel: severely reduce the glossiness and anti-corrosion performance of the coating.

·Deterioration of electrical performance: Pores become channels for electrical breakdown and leakage current.

Fundamentally eliminating this physical defect source, ensuring a clean, smooth, and dense high-temperature processing process.

2. Expand the upper temperature limit for flame retardant protection

Traditional flame retardants become ineffective after self decomposition. The stable period of Anhydrous Zinc Borate extends to above 380 ° C, allowing it to continue to function in the earlier and more intense stages of a fire (when the material begins to thermally decompose):

·Early carbonization: When the polymer matrix begins to decompose, B₂O₃ begins to flow and promotes the formation of an initial protective layer of carbon.

·Continuous barrier: At higher temperatures, it forms a harder and more ceramic expanded carbon layer with the carbon source, providing long-lasting insulation and oxygen protection.

Application field

Special high-temperature engineering plastics (processing temperature>300 ° C)

·Polyphenylene sulfide (PPS): used for automotive engine peripheral components and electronic sensor housings. Require flame retardancy, high temperature resistance, and dimensional stability.

·Polyether ether ketone (PEEK): used in aerospace, medical sterilization equipment, and high-performance gears. UL94 V-0 is required and does not release harmful gases.

·Polyether imide (PEI), liquid crystal polymer (LCP): used for 5G communication equipment and micro connectors.

High performance industrial coatings and adhesives

·High temperature curing powder coating: used as a base powder or flour for automotive and household appliance wheels, requiring no pinholes, high flowability, and weather resistance.

·Heavy anti-corrosion and ship coatings: require flame-retardant epoxy and polyurethane systems, with no moisture to ensure coating integrity.

·Electronic potting adhesive and encapsulation material: used for electric vehicle electronic control units and power modules, requiring high thermal conductivity, high CTI, and no bubbles.

New Energy and Aerospace Composite Materials

·Thermal management materials for battery packs: flame retardant fillers for phase change materials or thermal conductive gaskets.

·Carbon fiber/glass fiber reinforced composite material: used for interior parts or secondary load-bearing structures, requiring low smoke and non-toxic (FST standard) flame retardant.

Storage

This product has extremely low moisture absorption, but it is still recommended to store it in a dry environment and seal it after use.

If you are looking for a manufacturer of anhydrous zinc borate, Taixing will be your best choice. Welcome to discuss cooperation.