Solvent-type flame-retardant pressure-sensitive adhesive and preparation method thereof

Abstract

The invention discloses a solvent-type flame-retardant pressure-sensitive adhesive and a preparation method thereof, belonging to the field of adhesives. The flame-retardant pressure-sensitive adhesive is composed of a solvent-type pressure-sensitive adhesive and an organic flame retardant blended in a weight ratio of 10:0.5-2.0; wherein, the organic flame retardant is a phosphorus-based flame retardant; The solvent-type pressure-sensitive adhesive is composed of the following components by weight percentage: 20% to 35% of acrylate type soft monomers, 5% to 20% of enolate type hard monomers, 5% to 20% of enolate type functional monomers 0.5-5%, organic solvent 42-70%, oil-soluble initiator 0.1-3%, chain transfer agent 0.05-0.5%. The flame-retardant pressure-sensitive adhesive adopts a solvent system, and the flame-retardant coating in the flame-retardant pressure-sensitive adhesive is selected from a solvent-based coating, and the melting film-forming of the solvent-based coating ensures The flame-retardant pressure-sensitive adhesive itself is more uniform in the film-forming process, making the flame-retardant efficiency of the same amount of flame retardant higher, so that the solvent-based flame-retardant pressure-sensitive adhesive has high initial viscosity and high efficiency. flame retardant effect.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a solvent-type flame-retardant pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] At present, acrylic acid is mostly used to prepare flame-retardant pressure-sensitive adhesives, but with the development of water-based polymerization technology of acrylate monomers, the existing technology is more and more focused on the development technology of acrylic series pressure-sensitive adhesives. It tends to be more water-based, which inevitably leads to a substantial reduction in the initial tack of the pressure-sensitive adhesive. Moreover, because the particle accumulation and film-forming mechanism of the aqueous emulsion will cause the phase separation of the flame retardant and the latex particles, the flame-retardant effect of the existing flame-retardant pressure-sensitive adhesives cannot be guaranteed. Contents of the invention [0003] Bas...

AI Technical Summary

Problems solved by technology

[0002] At present, acrylic acid is mostly used to prepare flame-retardant pressure-sensitive adhesives, but with the development of water-based polymerization technology of acrylate monomers, the existing technology is more and more focused on the development technology of acrylic series pressure-sensitive adhesives. Be more water-based, which necessarily results in significantly lower initial tack for pressure-sensitive adhesives

Moreover, due to the particle accumulation and film-forming mechanism of the aqueous emulsion, the phase separation between the flame retardant and the latex particles will cause the flame retardant effect of the existing flame retardant pressure-sensitive adhesives to be unguaranteed.