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Special protective paint for expressway crash barrier, and preparation method thereof
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A technology for anti-collision guardrails and protective paint, applied in anti-corrosion coatings, fire-resistant coatings, coatings, etc., can solve problems such as galvanized layer peeling off, loss of anti-collision function, and impact on vehicle traffic
Pending Publication Date: 2020-06-30
袁洪声
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[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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preparation example Construction
[0024] The preparation method of the special protective paint for the above-mentioned expressway anti-collision guardrail consists of the following steps:
[0025] (1) Take by weighing the number of components of each component in claim 2 or 3 or 4 or 5, put acrylic resin, epoxy resin, butanol, acrylic fat, thinner, drier into the reactor and carry out stirring treatment , the stirring time is 1h, and the rotating speed is 280-530 rpm;
[0026] (2) Add the dispersant and defoamer into step 1, and then carry out the stirring treatment again, the stirring time is 1.5h, and the rotation speed is 400-600 rpm to obtain the finished product.
[0027] The invention proposes a special protective paint for highway anti-collision guardrails and a preparation method thereof. The protective paint consists of the following components by weight: 40-60 parts of acrylic resin, 50-80 parts of epoxy resin, 10-20 parts of butanol 10-20 parts of acrylic fat, 10-20 parts of thinner, 0.3-0.6 parts...
Embodiment 1
[0030] (1) Weigh 45 parts of acrylic resin, 55 parts of epoxy resin, 12 parts of butanol, 11 parts of acrylic resin, 15 parts of thinner, and 0.3 part of drier, and mix acrylic resin, epoxy resin, butanol, acrylic resin, The thinner and drier are put into the reaction kettle for stirring treatment, the stirring time is 1h, and the rotation speed is 330 rpm;
[0031] (2) Add the dispersant and the antifoaming agent into the step 1, and carry out the stirring treatment again, the stirring time is 1.5 h, the rotating speed is 450 rpm, and the finished product is obtained.
Embodiment 2
[0033] (1) Weigh 50 parts of acrylic resin, 61 parts of epoxy resin, 15 parts of butanol, 13 parts of acrylic resin, 12 parts of thinner, and 0.4 part of drier, and mix acrylic resin, epoxy resin, butanol, acrylic resin, The thinner and drier are put into the reaction kettle for stirring treatment, the stirring time is 1h, and the rotation speed is 400 rpm;
[0034] (2) Add the dispersant and the antifoaming agent into the step 1, and carry out the stirring treatment again, the stirring time is 1.5 h, and the rotation speed is 480 rpm to obtain the finished product.
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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 ...
Claims
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Application Information
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