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Toughened confining liquid for anti-collision steel barrier of dacromet road

A sealing liquid and guardrail technology, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of low hardness and coating acid and alkali resistance, achieve the effect of increasing hardness and Rockwell hardness, and ensuring effective implementation

Active Publication Date: 2016-03-09
WEIFANG YUANDA METAL SURFACE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of tempering and sealing liquid for Dacromet highway anti-collision steel guardrail, which significantly strengthens the defects of Dacromet coating surface hardness and low coating acid and alkali resistance. The hardness of the surface of the highway anti-collision steel guardrail is greatly improved, and its anti-corrosion performance is greatly improved. The indicators are not only far optimized from the traditional hot-dip galvanizing process standards, but also greatly superior to the existing Dacromet technology treatment effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The tempering and sealing liquid used on the anti-collision steel guardrail of Dacromet highway is composed of the following volume ratio raw materials: KH-550 1.3%, zinc 14%, aluminum 2.5%, ethylene glycol 5%, GR-203 oxidation 2.5% polyethylene wax emulsifier, 0.15% BYK-161 silicone dispersant, 0.1% water-based defoamer, 0.1% hydroxyethyl cellulose, 0.55% metal reflective powder, and the balance is deionized water.

[0026] It is measured by the surface Rockwell hardness test: the Rockwell hardness of the Dacromet coating coated with the tempering sealing solution described in Example 1 is increased by 25.9% compared with the existing one.

[0027] The national standard neutral salt spray test was carried out on the Dacromet coating coated with the toughening sealing solution described in Example 1, and it was measured that the time for red rust to appear was prolonged by 114.7 hours.

Embodiment 2

[0029] The tempering and sealing liquid used on the anti-collision steel guardrail of Dacromet highway is composed of the following volume ratio raw materials: KH-550 1.9%, zinc 18%, aluminum 6.5%, ethylene glycol 3.5%, GR-203 oxidation 2.5% polyethylene wax emulsifier, 0.45% BYK-161 silicone dispersant, 0.3% water-based defoamer, 0.1% hydroxyethyl cellulose, 0.55% metal reflective powder, and the balance is deionized water.

[0030] It is measured by the surface Rockwell hardness test: the Rockwell hardness of the Dacromet coating coated with the toughening sealing solution described in Example 2 is increased by 30% compared with the existing one.

[0031] The national standard neutral salt spray test was carried out on the Dacromet coating coated with the toughening sealing solution described in Example 2, and it was measured that the time for red rust to appear was prolonged by 150 hours.

Embodiment 3

[0033] The tempering and sealing liquid used on the anti-collision steel guardrail of Dacromet highway is composed of the following volume proportioned raw materials: KH-550 2.2%, zinc 22%, aluminum 5.5%, ethylene glycol 6.5%, GR-203 oxidation 2.5% polyethylene wax emulsifier, 0.35% BYK-161 silicone dispersant, 0.25% water-based defoamer, 0.1% hydroxyethyl cellulose, 0.55% metal reflective powder, and the balance is deionized water.

[0034] It is measured by the surface Rockwell hardness test: the Rockwell hardness of the Dacromet coating coated with the toughening sealing solution described in Example 3 is increased by 28.2% compared with the existing one.

[0035] The national standard neutral salt spray test was carried out on the Dacromet coating coated with the toughening sealing solution described in Example 3, and it was measured that the time for red rust to appear was prolonged by 137 hours.

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PUM

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Abstract

The invention belongs to the technical filed of road facilities, and specifically relates to a toughened confining liquid for anti-collision steel barrier of dacromet road. The toughened confining liquid comprises the following raw materials: silane coupling agent, zinc, aluminum, glycol, emulsifier, dispersant, antifoaming agent, hydroxyethyl cellulose, metal reflective powder, and deionized water. The toughened confining liquid prominently enhances the hardness of surface of road anti-collision steel barriers, and largely improves the anticorrosion performance of the steel barriers. Each index is far better than the technological standards of conventional hot-dip galvanizing technology, and the treatment effect of the confining liquid is largely better than that of conventional dacromet technology.

Description

technical field [0001] The invention belongs to the technical field of road facilities, and in particular relates to a tempering sealing liquid used on anti-collision steel guardrails of Dacromet roads. Background technique [0002] Traditional guardrail wave beams, columns, anti-blocking blocks, fastening bolts, etc. are treated by hot-dip galvanizing. Because of the thick coating and the problems of surface sagging and roughness, the bolts have a large clearance and high tightening torque requirements, which are easy to affect The integrity and rigidity of the bolted connection reduces the connection performance and increases the difficulty of construction; after the surface of the substrate is pickled, hydrogen embrittlement occurs due to acid corrosion, the corrosion resistance is reduced, and the strength is reduced; the surface of the hot-dip galvanized guardrail is rough and frictional The coefficient is high. When the vehicle hits the guardrail, the greater friction ...

Claims

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Application Information

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IPC IPC(8): C09D5/10C09D7/12
Inventor 张景平耿雷张文浩
Owner WEIFANG YUANDA METAL SURFACE TECH CO LTD
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