Nano silicon dioxide modifying water composite road sign dope and preparation method thereof

Abstract

The invention discloses nano silica dioxide modified waterborne composite road sign paint and a preparation process. The paint comprises the following components which are counted with parts by mass, 35-44 parts of paint emulsion, 1-3 parts of polyamine polymer, 2-5 parts of film-forming auxiliary agent, 1-4 parts of nano silica dioxide dispersion, 5-8 parts of titanium dioxide, 8-20 parts of heavy calcium carbonate, 5-20 parts of wollastonite, 5-15 parts of silica flour, 5-20 parts of glass bead, 5-20 parts of mica powder, 2-5 parts of propylene glycol butyl ether, 1-3 parts of methyl-ethyl ketone, 1-4 parts of ammonial solution and deionized water which is filled to reach the whole weight of 100 parts. The paint of the invention has the characteristics of quick-drying in normal temperature, self cross-linking, excellent abrasion resistance and water resistance, which is an environment-friendly paint with high property whose organic solvent content is smaller 5%.

Description

technical field [0001] The invention relates to the technical field of environmentally friendly functional composite coatings, in particular to a nano-silica modified water-based composite road marking coating and a preparation method thereof. Background technique [0002] The 21st century is a period of rapid urbanization in China, increasing expressways, urban and rural roads, and airport runways. The amount of road marking paint is also increasing accordingly. Road marking paint has played a huge role in traffic guidance and control. The annual consumption is more than 200,000 tons, and the average annual consumption increases by 15%. [0003] At present, the output of water-based environmental protection road marking paint in my country is very small, and the quality is low. The main types of coatings currently used are solvent coatings and hot melt adhesives. The solid content of solvent-based coatings is generally about 75%, and more film-forming materials are alkyd ...

AI Technical Summary

Problems solved by technology

It is characterized by fast curing, thick coating, and good abrasion resistance of the coating film, but it cannot adhere to the old paint during construction (the old paint needs to be removed), the construction machinery is expensive, and a primer must be applied, and the construction efficiency is low

In addition, hot-melt coatings are applied at high temperatures, resulting in high energy consumption for heating, and the film-forming material of the coatings is prone to localized carbonization and scalding of construction personnel. The above problems have been plaguing the transportation industry.