Flame-retardant reinforced polyurethane grouting material and preparation method thereof

Abstract

The invention discloses a flame-retardant reinforced polyurethane grouting material comprising the following raw materials in parts by weight: 15-30 parts of polyether glycol, 20-35 parts of polyurethane reactive monomers, 15-30 parts of polyester, 2-10 parts of a compatilizer, 1-2.5 parts of an amine catalyst, 0-2 parts of a tin catalyst, 2-5 parts of a flame retardant, 15-30 parts of isocyanate, 1-5 parts of a plasticizer, 10-25 parts of an organic solvent, 15-30 parts of flame-retardant polyalcohol, 15-30 parts of halogenated phosphate and 1-4 parts of antimony trioxide. A preparation method of the flame-retardant reinforced polyurethane grouting material is simple, and the prepared grouting composition can be flame-retardant and is suitable for popularization.

Description

technical field [0001] The invention relates to the technical field of grouting materials, in particular to a flame-retardant reinforced polyurethane grouting material and a preparation method thereof. Background technique [0002] The grouting material is selected to achieve a certain engineering purpose, can exist in liquid form, and is convenient to use hydraulic pressure, air pressure or electrochemical principles to inject into the internal space of the corresponding medium, such as cracks, cracks, pores, etc., and has the ability to cement and solidify, so that the medium The general term for a class of engineering materials whose leakage channels are blocked and whose physical properties and mechanical properties are improved. However, the existing grouting materials have a low melting point and produce molten droplets when exposed to fire at a high temperature, which is prone to secondary combustion and has an extremely fast flame propagation speed. Therefore, we pr...