Interpenetrating network emulsion having high adhesive force to metal substrate material and synthetic method of interpenetrating network latex

Abstract

The invention discloses an interpenetrating network emulsion having high adhesive force to a metal substrate material and a synthetic method of the interpenetrating network emulsion. The interpenetrating network emulsion is an interpenetrating network polymer with a core shell structure, and has a solid content of 30-45%; the core of the interpenetrating network polymer with the core shell structure is formed by virtue of polymerization between a nuclear layer monomer and a crosslinking monomer under the action of an initiator; and the shell of the interpenetrating network polymer with the core shell structure is formed by virtue of polymerization between a shell layer monomer and a phosphate functional monomer under the action of an initiator. The emulsion synthesized by the method disclosed by the invention has the following advantages: (1) the adhesive force to the metal substrate material is good; (2) the damping factor is high and can reach a maximum value of 1.3; and (3) the emulsion has a core shell structure of an interpenetrating network.

Description

technical field [0001] The invention relates to an interpenetrating network emulsion and a preparation method thereof, in particular to an interpenetrating network emulsion with high adhesion to metal substrates and a synthesis method thereof. Background technique [0002] Interpenetrating network (IPN) polymers are a class of polymer materials with good comprehensive properties developed in recent years. It is formed by the cross-linked network of cross-linked polymer A and cross-linked polymer B, which is continuously interpenetrated with each other, and has a special spatial topology, in which at least one polymer is network-like, and other polymers Can exist in linear form. Due to the cross-penetration and mechanical entanglement between the polymer networks, it plays the role of forced mutual compatibility and synergistic effect, which provides an effective method for improving the performance of polymers. Due to the two effects of thermodynamic incompatibility and fo...

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Problems solved by technology

Another example is disclosed in the patent CN 102731731 B a kind of preparation method of hyperbranched polyurethane / polyacrylate damping material, the water-based polyurethane prepolymer of partial termination is synthesized by traditional method first; React with isocyanate groups, graft to water-based polyurethane prepolymer to obtain hyperbranched water-based polyurethane prepolymer; then add triethylamine and some vinyl monomers for ionization, and add water to disperse under high-speed stirring to obtain polyurethane / Vinyl monomer dispersion; finally, raise the temperature of the above dispersion to 65-80 °C, start to add the remaining vinyl monomer, initiator and crosslinking agent dropwise, continue the heat preservation reaction for 2-6 hours, and cool down to obtain hyperbranched polyurethane / polymer Acrylate emulsion, the material after the coating film is cured has relatively good damping performance and heat resistance performance, but there is no report that it has excellent antirust performance