A storage-stable polyurethane all-water composite material and polyurethane rigid foam material prepared therefrom

Abstract

The invention provides a storage-stable polyurethane all-water composite material and a polyurethane rigid foam material prepared therefrom. The all-water composite material includes an isocyanate component and a combined white material component. The isocyanate component is polyisocyanate; the combined white material component includes a polyol combination, a stabilizer combination, a filler, a wetting and dispersing agent, a catalyst, water, and a surfactant. The prepared spray-coated thermal insulation material has good bonding performance, thermal conductivity and surface hardness between the substrate and the base material. The composite material has a stable storage period of 1-5 years, and the prepared foam has a Shore hardness of 30-70D and a foam density of 300-900kg / m 3 , thermal conductivity 0.015‑0.040w / m·k, bonding strength 0.5‑4MPa.

Description

technical field [0001] The invention belongs to the technical field of polyurethane foam, and in particular relates to a polyurethane all-water composite material with excellent storage stability and a polyurethane rigid foam material prepared therefrom. Background technique [0002] Rigid polyurethane foam has the lowest thermal conductivity among thermal insulation materials and the best thermal insulation effect. It is widely used in refrigerators, cold storage, building panels, pipeline insulation, and the insulation layer of refrigerated containers. [0003] At present, there are gradually certain requirements for the thermal insulation performance of the bathroom industry, such as high-end hotel washbasins, jacuzzi, small swimming pools, etc., and it is also necessary to ensure the bonding performance between the material and the substrate, and the reinforcement effect of the material on the substrate. Domestic shower trays and bathtubs are generally made of resin and ...

AI Technical Summary

Problems solved by technology

The systems with fillers in the above-mentioned patents do not mention how to improve the dispersion efficiency of solid powders, how to improve storage stability, and prevent fillers from settling and agglomerating.

However, under normal circumstances, due to the low dispersion efficiency of the combined polyether system with fillers, filler agglomeration will generally occur during the preparation process, and the agglomerated filler will also settle during storage, which will directly affect the final foam quality. performance

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