Hexamethoxy methylmelamine (HMMM) is a versatile compound that plays a crucial role in improving the bond strength between rubber and reinforcements when combined with dry bonding chemicals and resorcinol formaldehyde resins. Unlike hexamine, HMMM offers numerous advantages, including lower toxicity and the absence of corrosive effects on steel cord, polyester cord, and metal molds. Moreover, HMMM finds application in conjunction with phenolic reinforcing novalak resin to enhance various properties of rubber compounds. By incorporating HMMM, rubber compounds exhibit increased modulus, tensile strength, stiffness, and hardness, making it a valuable additive for achieving optimal performance.
In the realm of rubber manufacturing, HMMM emerges as a game-changer for enhancing bonding capabilities. By synergizing with dry bonding chemicals and resorcinol formaldehyde resins, HMMM surpasses its counterpart, hexamine, with its improved safety profile and non-corrosive nature towards steel cord, polyester cord, and metal molds. Furthermore, the benefits of HMMM extend to its collaboration with phenolic reinforcing novalak resin, enabling rubber compounds to achieve superior modulus, tensile strength, stiffness, and hardness. With HMMM’s incorporation, manufacturers can unlock a wide range of possibilities, ensuring their rubber products deliver outstanding performance and durability in diverse applications.
Resin Type | Typical Properties |
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PP-1890L Hexamethoxy methyl melamine (HMMM) | Reactive Content (%): >98 Nitrogen Content (%): 21.5 – 24.0 |
PP-1890S HMMM resin on inert inorganic carrier | Reactive Content (%): 63-67 Ash Content (%): 30-35 Moisture Content (%): < 4 |
PP-1890V HMMM resin on inert inorganic carrier | Reactive Content (%): 48-52 Ash Content (%): 44 – 48 Moisture Content (%): < 5 |
HEXAMETHYLENE TETRAMINE (HEXA)
Treated hexamine is an essential additive in enhancing bond strength when combined with methylene acceptors. To ensure optimal performance, hexamine undergoes a treatment process involving the use of precipitated silica and/or processing oil. This treatment not only prevents the formation of lumps but also minimizes dusting while improving the dispersion within rubber compounds. With treated hexamine, manufacturers can achieve superior bonding properties, reduced dusting, and improved dispersion, making it a valuable component in various applications.
Resin Type | Typical Properties |
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PP-1891 Hexamine treated with oil and silica | Reactive Content (%): 90-93 Ash Content (%): < 4 Moisture Content (%): < 1 |
PP-1891S Hexamine | Reactive Content (%): 96-98 Ash Content (%): <3 Moisture Content (%): < 1 |