Special protective paint for expressway crash barrier, and preparation method thereof

Abstract

The invention provides a special protective paint for an expressway crash barrier, and a preparation method of the special protective paint. The protective paint consists of the following components in parts by weight: 40-60 parts of an acrylic resin, 50-80 parts of an epoxy resin, 10-20 parts of butanol, 10-20 parts of propyl ester, 10-20 parts of a thinner and 0.3-0.6 part of a drier. The preparation method comprises: placing the components into a reaction kettle, carrying out stirring treatment for 1 h at a rotating speed of 280-530 r / min, then adding a dispersing agent and a defoaming agent into the mixture obtained in the step 1, and carrying out stirring treatment again for 1.5 h at a rotating speed of 400-600 r / min to finally obtain a finished product. According to the invention, after being used, the protective paint has strong adhesive force, high-temperature resistance, water resistance, salt mist resistance, oil resistance and corrosion resistance; the protective paint is simple to process; and when the protective paint is used for spraying maintenance of an expressway crash barrier, the crash barrier can keep the complete use function, the service life of the expresswaycrash barrier is prolonged, normal passing of vehicles is not hindered, and the maintenance cost can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of protective coatings, in particular to a special protective coating for highway anti-collision guardrails and a preparation method thereof. Background technique [0002] Expressway is an important infrastructure for rapid economic development, and it is also an important symbol of a country's economic development. As of June 2017, the total mileage of expressways in my country has exceeded 130,000 kilometers, forming a criss-cross expressway network extending in all directions with the capital Beijing as the center and provincial capital cities as hubs. [0003] In order to ensure the normal operation of the expressway, the maintenance of its safety facilities is very important. At present, my country's expressway anti-collision fence nets are all made of steel plates with a width of 40-50 cm, punched into corrugated plates, and then hot-dip galvanized surface treatment before installation. Its function ...

AI Technical Summary

Problems solved by technology

[0004] The guardrail is used outdoors and is often exposed to wind and sun, rain and snow, low-temperature freezing and erosion from automobile exhaust, which will lead to oxidation and peeling of the galvanized layer, causing the steel plate to be corroded and damaged, resulting in loss of anti-collision function. High-speed vehicles pose safety hazards

[0005] However, most of the guardrails are four meters long, connected by steel pipes piled into the ground, fixed with anti-theft bolts, and have a certain stress and tension in the stroke. It will seriously affect the traffic of vehicles or even cut off the traffic, making the passing vehicles need to detour

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