High Purity Melamine Cyanurate

Taixing's high purity melamine cyanurate is produced using innovative precision complex crystallization and dual purification modification core technologies. With a 1:1 molar ratio to accurately synthesize a layered hydrogen bond structure as the base, it achieves a purity of over 99.8% and a nitrogen content of ≥59%. Only 8%-20% addition is required to achieve UL 94 V-0 flame retardancy, effectively addressing the industry challenges of traditional MCA—insufficient compliance, significant performance degradation, and processing instability—providing a safe and environmentally friendly flame retardant solution for global high-end manufacturing.

Core strengths

1. Ultra-pure Synthesis and Impurity Control

· Chromatographic purity: Utilizing multi-stage solvent recrystallization and nanofiltration technology, the main content is ≥99.8%, with byproduct residues (such as dicyandiamide) and catalyst remnants (chloride ions, sulfate ions) controlled at ppm levels, effectively eliminating performance degradation caused by processing yellowing and high-temperature decomposition from the source.

· Precise pH regulation: The aqueous suspension maintains a stable pH of 6.5-7.5 (neutral range), completely eliminating the potential corrosion risks to processing equipment caused by the acidic nature of traditional MC, as well as the hydrolytic catalytic risks to polymer matrices (especially PA).

· Extremely low free melamine content: <0.05%, ensuring long-term heat aging resistance of the material and preventing surface blooming (blooming) and gradual degradation of electrical performance.

2. Multi dimensional flame retardant mechanism, efficient protection without dead corners

-Triple synergistic flame retardant effect: Under high temperature, the three mechanisms of heat absorption cooling (heat absorption decomposition above 320 ℃), gas phase dilution (release of inert gases such as nitrogen and ammonia), and condensed phase barrier (promote the formation of a dense carbon layer) work together to construct a comprehensive flame retardant protection network, and the limit oxygen index (LOI) can be increased to over 31%.

-Adapting to low additive and high-performance requirements: Adding 10% to pure nylon 6 can achieve UL 94 V-0 grade, and adding 8% to nylon 66 can meet flame retardant standards, reducing the amount of MCA added by 15% -20% compared to ordinary MCA and significantly reducing formulation costs.

-Wide temperature range thermal stability: 1% thermal decomposition temperature ≥ 320 ℃, fully decomposed at 440-450 ℃, suitable for processing temperature windows of 240-330 ℃, meeting the requirements of high-temperature extrusion and injection molding processes for engineering plastics, with no risk of premature degradation.

3. Modification optimization adaptation, win-win situation for processing and performance

-Breakthrough pain point in surface compatibility modification: By using environmentally friendly silane coupling agents for surface treatment, the compatibility with non-polar substrates (such as PE) is greatly improved, solving the problems of uneven dispersion and high mechanical property loss in traditional MCA. The impact strength retention rate of PA6 products is ≥ 90%.

-Narrow distribution particle size ensures processing: The average particle size D50 is 2-4 μ m, D98 ≤ 12 μ m, excellent flowability, and can be stored in a 60% humidity environment for 6 months without clumping. It can be directly fed without pre drying and does not stick to the mold, foam, or frost during processing.

-Excellent electrical performance: volume resistivity ≥ 10 ¹⁴Ω· cm, high leakage tracking index (CTI), added without affecting the dielectric properties of the substrate, especially suitable for the needs of electronic and electrical products.

4. Full scene adaptation, wide application coverage

-Wide compatibility of substrate: It has excellent compatibility with various polymer materials such as nylon (PA6/PA66), PE, EVA, epoxy resin, rubber, etc. It is suitable for both pure resin systems and glass fiber filling systems, and can still reach UL 94 V-2 level or above in reinforcement materials.

-Minimal impact on mechanical properties: minimal damage to the mechanical properties of the substrate, flame retardant nylon products can be reused 5 times after crushing, with a mechanical property retention rate of>85%, solving the contradiction between traditional flame retardants meeting flame retardant standards and deteriorating performance.

-Balancing aesthetics and practicality: Whiteness ≥ 96, odorless and tasteless, does not affect the natural color of the substrate, can be directly used for white or light colored products, meeting the requirements of appearance design.

Application scenarios

1. Polyamide (nylon) halogen-free flame retardant

·PA6/PA66 glass fiber free reinforcement: Adding 8-12% MC-UHP can achieve UL94 V-0 (1.6mm/0.8mm), CTI value can reach 600V, maintaining over 90% of the original impact strength and excellent surface smoothness. Suitable for small circuit breakers and electrical connectors.

·Fiberglass Reinforced PA (FR-GFPA): Using MC-SC (special coupling agent treatment) and synergistic agents such as hypophosphite, V-0 can be achieved by adding 15-18% in a 25-30% fiberglass filling system, while effectively solving the problem of CTI decrease caused by fiberglass exposure (CTI>400V). Used for electric vehicle charging gun casing and water pump impeller.

·High temperature Nylon (PPA, PA46): The high thermal stability and decomposition temperature of MC-UHP perfectly match the processing window of high-temperature nylon (300-330 ° C), avoiding foaming and performance degradation caused by premature decomposition of flame retardants.

2. Polyester and special engineering plastics

·PBT/PET flame retardant modification: When used in combination with synergists such as polydimethylsiloxane, the addition of MC-SF is 10-15%, achieving thin-walled V-0 and significantly improving the common droplet problem of flame retardant PBT, enhancing long-term thermal aging performance.

·Thermoplastic polyurethane (TPU): Adding 18-25% MC-SF provides excellent flame retardancy, flexibility, and transparency balance for halogen-free flame-retardant TPU cable materials and films.

3. High end color masterbatch and functional masterbatch

·By utilizing the ultra whiteness and extremely low impurity characteristics of MC-UHP, it serves as the core flame retardant component of high-quality white or light colored flame retardant masterbatch, avoiding the color shift caused by traditional flame retardants.

If you are looking for high-purity melamine cyanurate, ultra pure MC flame retardant, and halogen-free flame retardant nylon special MC, Taixing will be your best partner and we will provide the most favorable price cooperation!