High-density melamine foam and preparation method thereof

Abstract

The present invention discloses high-density melamine foam, which comprises the following raw materials; a primary polymer of waterborne melamine formaldehyde resin, solid methylol melamine, a polar solvent, a surfactant, a foaming agent, a curing agent and an additive. The present invention also discloses a preparing method of the high-density melamine foam, comprising the following steps: preparing a primary polymer of waterborne melamine formaldehyde resin; uniformly mixing the primary polymer of the waterborne melamine formaldehyde resin, the polar solvent, the surfactant and the additive to obtain a mixture A; uniformly mixing the mixture A with the solid methylol melamine to obtain a mixture B; uniformly mixing the mixture B with the foaming agent to obtain a mixture C; uniformly mixing the mixture C with the curing agent to obtain a mixture D; and carrying out microwave radiation, foaming, curing, drying and quenching on the mixture D in a microwave foaming device to obtain the high-density melamine foam. The melamine foam described in the present invention has high density and high strength performance.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of, and claims priority to, Chinese Patent Application No. 201510228178.6 with a filing date of May 7, 2015. The content of the aforementioned application, including any intervening amendments thereto, is incorporated herein by reference.TECHNICAL FIELD[0002]The present invention relates to melamine foam and a preparing method thereof, and particularly to high-density melamine foam and a preparing method thereof.BACKGROUND[0003]The existing melamine foam is low-density and high-open-ratio flame-retardant foam, has excellent flame retardant, sound absorption, thermal insulation and cleaning functions, and can be widely applied to the construction, transportation, household and industry fields. In practical applications, some fields, such as cushion, sofa, thermal insulation, cleaning and other fields, make higher requirements for the density and strength of melamine foam, but the density of the melamine f...

AI Technical Summary

Benefits of technology

The present invention concerns a method for making melamine foam using a specific mixture of raw materials that increases its thickness, solid content, and functionality. This results in a stronger and more dense foam that is useful in a variety of applications such as thermal insulation, sound insulation, and decoration. It can also be used in industrial settings for heat and cold insulation, and in civil settings for cleaning and sanitation. Additionally, it is suitable for use in cushions and sofas.

Problems solved by technology

In practical applications, some fields, such as cushion, sofa, thermal insulation, cleaning and other fields, make higher requirements for the density and strength of melamine foam, but the density of the melamine foam on the current market is generally 4 to 10 kg / m3, which is difficult to meet the requirements, thereby limiting the application fields of the melamine foam.

The above-mentioned patent technology proposes the preparing method of melamine foam, but the density and strength are still difficult to adapt to the higher requirements.