Polyurethane sound insulation coating and production process thereof

Abstract

The invention relates to a polyurethane sound insulation coating and a production process thereof, belonging to the technical field of preparation of sound insulation materials. The production process comprises the following steps: 1, mixing polyester diol, isocyanate, epoxy resin and dibutyltin dilaurate according to a formula ratio, carrying out heating to 75-90 DEG C, and performing stirring for a reaction for 1-2 hours to obtain a polyurethane prepolymer; and 2, adding N-methyl pyrrolidone into the polyurethane prepolymer, carrying out stirring and reacting for 20-60 minutes, adding triethylamine and water, conducting heating to 70-90 DEG C, performing stirring for 2-3 hours, then adding modified hollow glass beads, aminated tetrapod-like zinc oxide whiskers, a defoaming agent and a coalescing agent, and carrying out stirring and reacting at 70-80 DEG C for 1-2 hours to obtain the polyurethane sound insulation coating. According to the invention, by adding the modified hollow glass beads and the modified tetrapod-like zinc oxide whiskers, the polyurethane coating is endowed with excellent sound insulation and noise reduction performance, and the problems that an existing floor in a building of a community is poor in sound insulation effect and tedious in construction are solved.

Description

technical field [0001] The invention belongs to the technical field of sound-insulating material preparation, and in particular relates to a polyurethane sound-insulating coating and a production process thereof. Background technique [0002] The impact of noise on people's physical and mental health is increasing. The sound insulation effect of existing residential quarter floors is poor. The traditional sound insulation method is to lay sound insulation materials with special structures. Research and development of sound insulation composite materials. [0003] With the development of the coatings industry, sound insulation coatings have emerged, especially polyurethane sound insulation coatings. Polyurethane (PU) has good wear resistance and high elasticity. Its macromolecular main chain contains glass above and below room temperature. The rigid segment and the flexible segment at a higher temperature can obtain an ideal damping temperature range and have a certain sound...

AI Technical Summary

Problems solved by technology

[0002] The impact of noise on people's physical and mental health is increasing. The sound insulation effect of existing residential quarter floors is poor. The traditional sound insulation method is to lay sound insulation materials with special structures. Research and development of sound insulation composite materials

[0003] With the development of the coatings industry, sound insulation coatings have emerged, especially polyurethane sound insulation coatings. Polyurethane (PU) has good wear resistance and high elasticity. Its macromolecular main chain contains glass above and below room temperature. The rigid segment and the flexible segment at a higher temperature can obtain an ideal damping temperature range and have a certain sound insulation performance. Existing technicians also reduce the projected sound wave energy by adding microparticles with heat insulation effect, so as to achieve sound insulation. Among them, the representative one is the addition of airgel materials. Although airgel has excellent thermal insulation and sound insulation properties, its production cost is high, the product is expensive, it does not use large-scale production, and the strength of polyurethane is not high enough. The damping performance in the higher temperature range is unstable, and the water resistance and solvent resistance are not enough. Therefore, it is a technical problem to be solved to provide a polyurethane sound insulation coating with low cost, good sound insulation effect and high mechanical performance and its production process.

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