Flame retardant for pressure sensitive adhesive

Acrylic monomer copolymerization is a kind of resin-type pressure sensitive adhesive, which can be prepared by copolymerization and cross-linking. Flame retardant acrylic pressure sensitive adhesive can be prepared in the following three ways.

One: the introduction of flame-retardant polymers

At present, many flame-retardant pressure sensitive adhesives add one or more flame retardants to meet the performance requirements, but the performance of the pressure sensitive adhesives will be affected after addition. At the same time, due to the cross-linking effect, flame retardants can not play a good role. At present, the most advanced method is to add flame retardant polymer to achieve the best performance of pressure sensitive adhesives and flame retardants.

Two: the introduction of flame retardant monomer

1: The use of chemical synthesis reaction to introduce flame-retardant groups, gives acrylic pressure sensitive adhesive flame retardant. At the same time, the acrylic pressure sensitive adhesive can be modified by the synthetic phosphate ester-modified acrylic polymer and the compound flame retardant chlorine and phosphorus elements to achieve a variety of monomer-free radical copolymerization, so that the acrylic adhesive has a good flame retardant function.

2: Silicone-modified acrylic resin and nano dihydroxyl composite metal oxide in a certain range of compounds, so that acrylic resin has high flame retardant.

Three: The use of 1,2 composite technology made of flame-retardant acrylic pressure sensitive adhesive.

Pressure sensitive adhesive flame retardant – flame retardant polymer

In flame retardant polymer and acrylic polymer mix, the internal components can be uniform, and will not affect the performance of the pressure sensitive adhesive, commonly used acrylic flame retardant pressure sensitive adhesive is the flame retardant polymer added to the base material and then through irradiation ionization polymerization to achieve the internal composition of uniform, the copolymer can be mixed with a self-extinguishing uniform thermoplastic components, In practical application, a small amount of organophosphate ester can be added to increase the flame retardant effect and plasticity.

Polyacetylene benzene polymer is a new type of polymer flame retardant because the molecular structure of the benzene ring determines its own easy-to-form copolymer with other monomers, it can be pyrolysis into carbon at high temperatures, and the formation of the carbon layer is very high-temperature resistance, resistance to more than 2000 degrees, and oxidation resistance. So the flame retardancy of acrylic pressure sensitive adhesive made of this polymer is quite high. There is also a kind of flame-retardant acrylic pressure sensitive adhesive mixed by the silicone oxygen group, the glued structure formed after mixing has strong flame retardant and thermal oxygen stability.