High Heat Resistant Zinc Borate

High Heat Resistant Zinc Borate has broken through the dehydration temperature bottleneck of traditional hydrated zinc borate at around 290 ° C, significantly increasing its thermal stability window to above 350 ° C. Specially developed for applications that require extremely stable material properties in high-temperature processing environments, long-term thermal aging conditions, or rigorous flame retardant testing, it is the cornerstone of ensuring the "longevity" and "safety" of polymers in thermal fields.

Core strengths

·Excellent delayed dehydration characteristics: The starting temperature of thermal weight loss is>350 ° C, significantly expanding the safe processing window in engineering plastics (such as PBT, PA6, PA66) and high-temperature curing systems, and preventing early decomposition.

·Long term thermal aging guardian: At continuous operating temperatures above 150 ° C, it can effectively delay the thermal oxidative degradation of polymer matrices, improve the relative temperature index (RTI) of materials, and ensure the long-term reliability of electronic and electrical components.

·Efficient synergy at high temperatures: It can continue to exert its charcoal, smoke suppression, and free radical capture effects stably during the high-temperature stage of a fire (350-500 ° C), providing a more durable fire barrier.

·Balance between process and performance: While pursuing high thermal stability, it retains the synergistic benefits of partial hydration structure for flame retardancy, achieving intelligent thermal response with "delayed release and efficient action".

Mechanism of action

1. "Lattice bound water" and delayed dehydration effect

The crystallization water of traditional zinc borate exists in the form of physical adsorption or weak bonding, and is prone to escape when heated. The Taixing High Heat Resistant Series integrates water molecules more deeply into the metal borate lattice network through reconstruction

·Higher dissociation energy: Breaking down this structure requires more energy, thereby increasing the dehydration initiation temperature from 290 ° C to 350 ° C+.

·Wide temperature range release: The dehydration process becomes a gentle and wide temperature range instead of a sharp peak, avoiding product defects caused by the release of a large amount of gas in a short period of time during the processing.

2. "Secondary activation" of flame retardant efficacy during high temperature stage

Traditional flame retardants may be exhausted before polymer decomposition. Our product is designed with a 'stepped function release':

·Phase 1 (>350 ° C): Slowly release water vapor and cool the surface of the melt.

·The second stage (400-600 ° C): A large amount of B ₂ O3 is released, which happens to be the stage when most polymers undergo severe decomposition and produce combustible gases. B ₂ O ∝ can efficiently cover combustibles, promote carbonization, capture free radicals, and achieve a "precise spatiotemporal matching" between flame retardancy and fire development.

3. Long term heat stabilizer effect

Under long-term thermal aging conditions, trace amounts of moisture and acidic substances in the material will catalyze degradation. The high stability of high heat-resistant zinc borate enables it to:

·Continuously absorbing trace degradation products to delay polymer chain breakage.

·The residue after stable decomposition forms a protective barrier, reducing further thermal oxygen invasion.

Application field

High temperature and long-life electronic appliances

·LED lighting: LED driver power housing, heat sink, requiring high RTI and excellent long-term thermal stability.

·Automotive electronics: engine compartment connectors, ECU housing, environmental temperature>125 ° C for a long time.

·Household appliances: internal components of hair dryers and ovens that need to withstand periodic high temperatures.

High temperature curing coatings and composite materials

·High temperature powder coating: The curing temperature of automotive and household appliance wheels often reaches over 200 ° C, requiring absolute stability of the filler.

·High performance composite materials: glass fiber/carbon fiber reinforced thermoplastic or thermosetting composite materials, used for aerospace or automotive structural components, with high processing temperatures.

Fields that require rigorous flame retardant testing

·Glow Wire Test (GWT) sensitive applications: Components that require GWIT (Glow Wire Ignition Temperature)>850 ° C or 875 ° C.

·New energy battery pack: The insulation and heat insulation components of battery modules require materials to remain stable and functional during the initial stage of thermal runaway.