Preparation method and application of cork prepolymer and construction method of cork floor

Abstract

The invention discloses a preparation method and an application of a cork prepolymer and a construction method of a cork floor, and belongs to the field of cork floors. Cork or oak bark is used as a raw material to prepare cork particles, and the cork particles are treated to obtain the cork prepolymer. The preparation method comprises the following steps: stirring and mixing the cork particles and polyurethane to obtain a mixed material; carrying out baking hardening in a baking channel and normal-temperature hardening on the mixed material to harden the cork particles and the polyurethane into an agglomerated polymer; stirring, crushing and separating the polymer, adding a single-component rigid polyurethane adhesive, and uniformly stirring and mixing; after stirring is completed, carrying out baking hardening in a baking channel and normal-temperature hardening again to enable the polymer to be in an agglomerated state; and then stirring and crushing the polymer again, and crushingthe blocks into single particles to obtain the granular cork prepolymer. According to the preparation method, the cork particles are firstly treated to obtain the cork prepolymer, and the surface of the cork prepolymer is fully coated with polyurethane, so that the hardness and the impact strength of cork can be improved.

Description

technical field [0001] The invention relates to the field of cork floors, in particular to a method for preparing a cork prepolymer and its application and a construction method for cork floors. Background technique [0002] Cork, commonly known as cork, cork, and cork, is the outer skin product of a very developed tree species, and the surface protection tissue after the stem and root grow thicker. Different from other tree species, cork oak can be repeatedly peeled every 8 years after peeling, which is a renewable resource. [0003] Cork consists of many flattened cells arranged radially. The lumen often contains resin and tannin compounds, and the cells are filled with air. It consists of dead cells in a 14-sided shape, arranged radially with each other in a hexagonal prism. Typical cell diameter is 30 microns and cell thickness is 1-2 microns. There are ducts between the cells. The interval between two adjacent cells is composed of 5 layers, two of which are fibrous...

AI Technical Summary

Problems solved by technology

The vast majority of existing outdoor sports ground pavement materials are mainly plastic particles, which are prone to "poisonous runways", and cork is relatively scarce in road surface applications

[0004] The main reason is: the material of cork itself is light. If it is directly paved on the road, because of the elasticity of the cork, the cork particles will be in a state of particle accumulation after spreading, and the road surface will not be formed.