Preparation method of melamine foam cotton

Abstract

The invention discloses a preparation method of melamine foam cotton. The method comprises the following steps of taking 100 weight parts of melamine formaldehyde resin; in 25-DEG C water bath environment, adding 8 to 10 weight parts of emulsifying agents, 6 to 10 weight parts of polyethylene glycol, 3 to 5 weight parts of poly ethylene glycol distearate, 6 to 9 weight parts of alkyl diethanol amide and 8 to 12 weight parts of polyvinyl alcohol; performing high-speed uniform stirring; then, adding 6 to 8 weight parts of foaming agents, 5 to 7 weight parts of pore forming agents, 12 to 18 weight parts of curing agents and 3 to 10 weight parts of propylene glycol; performing uniform mixing; next, performing foaming for 1 min at a microwave foaming furnace with the temperature being 100 DEG C, the frequency being 2450 MHz and the power being 2KW; then, performing curing shaping for 2h in a baking oven being 200 DEG C to obtain the melamine foam cotton. The prepared melamine foam cotton has excellent compression performance, anti-tension performance, heat-resistant performance and fire resistance performance, and has the advantages that the structure is uniform; the aperture ratio is high; the brittleness is low; the flexibility is high; the differentiation rate is low.

Description

technical field [0001] The invention belongs to the technical field of melamine-formaldehyde resin materials, and in particular relates to a preparation method of melamine foam. Background technique [0002] Melamine formaldehyde resin, also known as melamine resin, is a polymer obtained by the reaction of melamine and formaldehyde. Melamine resin is a new type of thermosetting plastic, which has many advantages such as non-toxic, tasteless, corrosion resistance and high temperature resistance. It has compact molecular structure, good processability, stable size, and smooth product appearance. It is widely used in daily necessities, machinery, electronics and other industries. [0003] Melamine-formaldehyde resin foam is a foam made of melamine-formaldehyde resin as a matrix through a special foaming process. Without adding any flame retardant, melamine-formaldehyde resin foam burns quickly and carbonizes without dripping , At the same time, the inert gas generated by the ...

AI Technical Summary

Problems solved by technology

[0005] The curing of melamine foam is achieved through cross-linking of methylene or dimethylene ether bonds. There are triazine rings with great steric hindrance attached to both ends of methylene, and multiple methylene and triazine rings interact with each other. Staggered, there is a relatively rigid triazine group in the melamine macromolecule, so there are defects such as high brittleness, low strength, and easy pulverization in mechanical properties, which greatly limits the industrial application of melamine foam, especially melamine foam. Therefore, further improving the mechanical properties of melamine foam is of great significance to expand and enhance the application range of melamine foam products