The products sold by the tape manufacturers are widely used in our lives. We all know that the adhesive tape surface is coated with a layer of adhesive to make the adhesive material. The thermal degradation of the adhesive tape during the process of manufacture is an important step. It determines the quality and service life of the tape produced.

In the thermal degradation process of adhesive tape, the depolymerized molecules break from the chain end, generate free radicals, and then chain degradation, and the monomer is rapidly produced. The reaction process is the inverse process of chain polymerization. PMMA at 300 °C; Its degradation reaction is depolymerization, which can be mostly converted into monomers. The lateral group eliminates the polymer with the lateral group, removes the substituent when heated, and finally the main chain breaks. Polyoxyethylene begins to deoxidize hydrogen at 100-120 °C, the color turns yellow, dechlorination accelerates at 200 °C, the color becomes dark, and the intensity becomes worse.

In addition, in the process of thermal degradation of adhesive for products sold directly by tape manufacturers, random breaks occur on the main chain of random broken chain molecules, and the molecular weight decreases rapidly, but the monomer yield is not large, which has a great impact on the use of tape.