What is the Free Radical Initiator?

Introduction of Free Radical Initiator

Generally, initiators are compounds with weak base, which are easily decomposed into active species, and their valence bonds have two forms: homogeneous cleavage and heterogeneous cleavage. Also known as starter. Chemical carcinogens that can transform normal cells into dominant tumor cells. The initiator has the following characteristics: it is carcinogenic and must be given before the growth promoter. It can produce effect after a single contact or exposure, and its effect can be cumulative but irreversible, and there is no threshold amount; The electrophilic substances can be covalently bound to cell macromolecules (DNA), and most of them are mutagens. For example, trans -4- acetylamino stilbene is the initiator.

An initiator is a substance that can initiate the polymerization of monomers. The polymerization active centers of unsaturated monomers include free radical type, anion type, cation type and coordination compound, etc. At present, the free radical type is widely used in adhesive industry, which shows unique chemical activity. Under the action of heat or light, covalent bonds are split to generate two free radicals, which can initiate polymerization.

Functions of Free Radical Initiator

Initiators play an important role in the research and production of adhesives and sealants, such as acrylate solvent polymerization to prepare pressure-sensitive adhesive, vinyl acetate solvent polymerization to manufacture building adhesive and building sealant, synthesis of styrene-acrylic emulsion, ethylene-propylene emulsion, VAE emulsion, styrene-butadiene latex, neoprene emulsion, white latex, etc., graft neoprene adhesive, sBs graft adhesive, crosslinking curing of unsaturated polyester resin, curing of anaerobic adhesive, curing of fast-curing acrylate structural adhesive, etc. Initiator can directly affect the polymerization process, the polymerization rate and the shelf life of the product.

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What is the Free Radical Initiator?

Introduction of Free Radical Initiator

Functions of Free Radical Initiator

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