Main Applications of Melamine Cyanurate

MCA is commonly used as a flame retardant in nylon, rubber, phenolic resins, epoxy resins, acrylic emulsions, PVC and other olefins, with low dosage and good flame-retardant effect. MCA is also a good lubricant additive, coating matting agent and plating grade plastic additive.

  1. MCA flame retardant nylon

The addition of 8% MCA to PA6 gives nylon a V-0 rating to UL 94, but is not stable. Usually, 1 or 2 out of 5 test strips produce dripping ignition, and even increasing the amount of MCA added does not change this. However, nanoscale MCA has a more stable flame-retardant effect on PA6 and the addition of 8% MCA results in a V-0 rating of UL 94 for PA6.

The tensile strength of the MCA flame retardant PA6 system is lower than that of the pure PA6 system, with only a slight decrease. The impact strength is approximately 13% lower than that of the pure nylon product; however, the flame retardancy is significantly higher, with the LOI value rising from 22. 3% to 28. 5% and the UL 94 flame retardancy level rising from V-2 to V-0. The melt flow rate increases slightly, but the nanoscale MCA results in a lower melt flow rate and reduced flow.

The addition of MCA to glass fibre (GF)/PA66 results in a GF/PA66 composite with a UL 94 V-0 rating. The MCA crystals are homogeneously dispersed in the nylon matrix and during combustion the MCA decomposes by its own heat absorption, producing non-combustible gases, resulting in a gas phase flame retardant effect and leaving nano-scale pores on the surface of the carbon residue of the composite.

  1. MCA synergistic flame-retardant PET

MCA is used in flame-retardant PET tapes. By adding MCA to the adhesive of PET tapes, the PET tapes have good flame-retardant properties, i.e. they curl and curl on ignition and are self-extinguishing.

In addition, MCA is also used in the preparation of MCA-blended flame-retardant PET.

At a phosphorus content of 0. 6% and an MCA addition of 5%, the ultimate oxygen index of the composite reached 28% and the V-0 class of UL 94 was achieved. This indicates that the addition of MCA improves the flame-retardant properties of PET.

  1. MCA flame retardant rigid polyurethane foam (RPUF/MCA)

MCA was used as a flame retardant in the preparation of RPUF/MCA. 30 parts of MCA enabled the RPUF/MCA composite to achieve a V-1 rating of UL 94 and an ultimate oxygen index of 22. 0%. The addition of MCA reduced both the initial thermal decomposition temperature and the combustion smoke density of the composite, effectively improving the flame retardancy of the composite.

More information or free samples or price quotations, please contact us via, or voice to us at: +86-28-8411-1861.

Some pictures and texts are reproduced from the Internet, and the copyright belongs to the original author. If there is any infringement, please contact us to delete.