Polyacrylate pressure-sensitive adhesive composition and preparation method thereof

Abstract

According to the polyacrylate pressure-sensitive adhesive composition and the preparation method thereof disclosed by the invention, the polyacrylate pressure-sensitive adhesive prepared according to the invention does not use a flame retardant containing halogen (mainly chlorine element and bromine element), so that the polyacrylate pressure-sensitive adhesive composition can be applied to scenes (such as the electronic industry) with requirements on halogen-free; halogen-free flame retardants such as metal hydrates (aluminum hydroxide, magnesium hydroxide and the like), phosphate, ammonium polyphosphate, red phosphorus and the like are not used, so that a large amount of halogen-free flame retardants do not need to be added, and the pressure-sensitive adhesive with relatively high stripping force can be possibly obtained; the flame retardant of the component (B) is a phosphorus-containing acrylate oligomer and has good compatibility with polyacrylate, so that a transparent product can be prepared. Not only can the VTM0 grade of a UL94 vertical combustion test method be reached, but also the peeling strength and the shearing strength of the pressure-sensitive adhesive are not influenced.

Description

technical field [0001] The invention relates to the field of polyacrylate pressure-sensitive adhesives, in particular to a polyacrylate pressure-sensitive adhesive composition and a manufacturing method thereof. Background technique [0002] The descriptions in this section merely provide background information related to the present disclosure and do not constitute prior art. [0003] Compared with pressure-sensitive adhesives of other materials (such as rubber type, silicone, polyurethane, etc.), polyacrylate pressure-sensitive adhesives have many unique properties, such as: excellent aging resistance (especially resistance to ultraviolet light aging), excellent High optical transparency, no need to add tackifying resin, pressure sensitivity, high temperature resistance, low temperature resistance, moderate price, and is widely used in transportation, electronic power, home appliances and construction markets. Commonly used polyacrylate pressure sensitive adhesives are us...

AI Technical Summary

Problems solved by technology

But this combined phosphorus type flame retardant acrylate pressure-sensitive adhesive has relatively low peeling force (the result of its best embodiment peeling force is also no more than 0.55N / mm), and its flame retardancy is still not enough (the best result is: The self-extinguishing time is 19 seconds, and the burning length is 57mm), and it is necessary to add ammonium polyphosphate (APP) flame retardant to achieve the ideal flame retardant effect, which makes the pressure sensitive adhesive opaque

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