Sinking expansion polyurethane with strong tearing property and preparation method thereof

Abstract

The invention discloses sinking expansion polyurethane with strong tearing property and a preparation method thereof. The polyurethane is prepared from the following raw materials in parts by weight:80-90 parts of modified polyester polyol, 50-60 parts of modified isocyanate, 10-20 parts of polyether polyol, 0.01-0.02 part of a catalyst, 1-1.5 parts of an antioxidant, 1-1.5 parts of ethylene glycol, 1-1.5 parts of a surfactant and 6-8 parts of a hydrophilic agent. The invention discloses sinking expansion polyurethane with strong tearing property and a preparation method thereof, and the prepared polyurethane not only can sink to adsorb pollutants at the bottom of water, but also has excellent tearing strength and tensile strength and excellent mechanical properties, can be applied to filtering processes such as sewage treatment and the like, and has higher practicability.

Description

technical field [0001] The invention relates to the technical field of polyurethane, in particular to a bottom-sinking expanded polyurethane with strong tear resistance and a preparation method thereof. Background technique [0002] With the rapid development of the economy, the increasing discharge of oily sewage in the industry has caused great environmental problems. The large discharge of industrial sewage will not only damage the ecosystem, but also damage people's health. Therefore, researchers have been committed to finding and researching Simpler and more efficient sewage treatment materials and treatment methods, and in the existing treatment process, filter sponge is one of our commonly used materials. [0003] Filter sponge, also known as mesh sponge, blasting sponge, conventional filter sponge is generally polyurethane sponge, which is processed by ordinary open-cell soft foam through net treatment, and net treatment removes the original mask between the foam net...

AI Technical Summary

Problems solved by technology

[0003] Filter sponge, also known as mesh sponge, blasting sponge, conventional filter sponge is generally polyurethane sponge, which is processed by ordinary open-cell soft foam through net treatment, and net treatment removes the original mask between the foam network Or the wall membrane, obtained the main frame network structure, but the mechanical properties of the existing filter sponge are poor, the tearing property is poor, and the service life is short, which brings inconvenience to practical application