High-density soft melamine foam and preparing method

• Main Authors: YE RUI, GOU HANG, ZHANG LU, SU HUA, FU HAO
• Format: Patent
• Language: English
• Published: 15.07.2015
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

The invention discloses high-density soft melamine foam which comprises the raw materials of water-based melamino-formaldehyde resin initial polymers, solid hydroxymethyl melamine, a polar solvent, a surface active agent, a foaming agent, a curing agent and an adding agent. The invention further discloses a preparing method of the high-density soft melamine foam. The method comprises the steps that the water-based melamino-formaldehyde resin initial polymers are prepared; the water-based melamino-formaldehyde resin initial polymers, the polar solvent, the surface active agent and the adding agent are evenly mixed to obtain a mixture A; the mixture A and the solid hydroxymethyl melamine are evenly mixed, and a mixture B is obtained; the mixture B and the foaming agent are evenly mixed, and a mixture C is obtained; the mixture C and the curing agent are evenly mixed, and a mixture D is obtained; and the mixture D is subjected to microwave radiation foaming, solidifying, drying and quenching in a microwave foaming device in a microwave foaming device, and the high-density soft melamine foam is obtained. The melamine foam has high density and high strength performance.