Roof concrete waterproof base coat material

Abstract

The invention discloses a roof concrete waterproof base coat material, which comprises the following raw materials by mass: 45-65% of polyurethane; 10-20% of natural asphalt organic gel; 3-5% of a polymer modifier; 1-2%of natural rubber butyl ester; 3-5% of hydroxypropyl methyl cellulose; 2-4% of phenolic resin; 3-7% of polyethylene glue; 2-7% of a coupling agent; and 1-3% of a hydrophobic agent.The waterproof base coat material has the advantages of tensile resistance, cracking resistance, low temperature resistance, capability of generating chemical reaction with nitrogen in air, high binding power, long service life and the like, and by adding hydroxypropyl methyl cellulose, phenolic resin and polyvinyl chloride, the water retention property and processability of the waterproof base coat material can be effectively improved, the bonding strength of the waterproof base coat material to a substrate in the use process and the waterproof effect after use are enhanced, and the stabilityof the waterproof base coat material after use is improved.

Description

technical field [0001] The invention relates to the technical field of waterproof primer materials, in particular to a roof concrete waterproof primer material. Background technique [0002] Most of the water contained in the formed concrete exists between solid particles in the form of free water, and a small part of water participates in the hydration reaction inside the concrete, changing from liquid water to insoluble hydrates, and most of the water evaporates The form of the concrete leaves the concrete, and with the evaporation of water, a large number of voids appear in the concrete, resulting in an imbalance of internal and external pressure, causing the concrete to dry shrink, and produce fine cracks. When the longitudinal cracks inside the concrete connect with each other to form capillary channels, water seepage occurs. There are many kinds of waterproof materials to solve concrete leakage, which can be divided into body waterproofing agent and surface waterproofi...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing roof concrete waterproof primer materials still have some deficiencies, for example; the existing roof concrete waterproof primer materials have weak tensile strength, cannot chemically react with nitrogen in the air, and have strong adhesion. Poor and short service life, and the existing roof concrete waterproof primer material can not improve the water retention and processability of the waterproof primer material, which weakens the bonding strength of the waterproof primer material to the substrate during use and the waterproof effect after use , which reduces the stability of the waterproof primer material after use