Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Coated steel bar and preparation method thereof

A coating and steel bar technology, applied in coatings, anti-corrosion coatings, epoxy resin coatings, etc., to achieve the effects of good film-forming properties, improved hardness, and high adhesion

Active Publication Date: 2015-12-23
SUNYOUNG CONSTR GROUP +1
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology requires the addition of a considerable amount of curing agent

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coated steel bar and preparation method thereof
  • Coated steel bar and preparation method thereof
  • Coated steel bar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The coating steel bar of this embodiment, the coating material on its surface is made of following components and weight percentage thereof:

[0032]

[0033] The epoxy resin is epoxy resin GY2600 from CIBA Company, Eq=0.25.

[0034] The mass content of the aminopropyl triethoxysilane is more than or equal to 98%.

[0035] The mass content of the tetraethyl orthosilicate is 28%.

[0036] According to the above ratio, mix epoxy resin, tetraethyl orthosilicate TEOS, and ethanol (transparent liquid) into the glass reactor, stir pneumatically, and circulate water at a temperature of 20-30°C. After constant temperature, start to add aminosilane (aminopropyl Grade triethoxysilane), after a few minutes (can be 1-10 minutes), the temperature rises to 35°C, and the rate of addition is controlled to keep the temperature below 40°C for reaction, and then keep warm for 4 hours after the dropwise addition to obtain the above coating Material.

[0037] Then follow the steps bel...

Embodiment 2

[0043] The coating steel bar of this embodiment, the coating material on its surface is made of following components and weight percentage thereof:

[0044]

[0045] The epoxy resin is epoxy resin GY2600 from CIBA Company, Eq=0.25.

[0046] The mass content of the aminopropyl triethoxysilane is more than or equal to 98%.

[0047] The mass content of the tetraethyl orthosilicate is 28%.

[0048] Follow the steps below to apply the above coating materials to the surface of the reinforcement:

[0049] Step 1, sandblasting to make the surface roughness of the steel bar 3.0-3.5 μm;

[0050] Step 2, remove the sand and dust on the surface of the steel bar to ensure that the surface of the workpiece is clean and free of oil or other foreign matter;

[0051] Step 3, uniformly coat the surface of the steel bars treated in the above step 2 with a dry film thickness of 5-15 μm;

[0052] Step 4: Curing at room temperature for 0.5-1 hour, and then keeping at 150°C-180°C for 30-60 mi...

Embodiment 3

[0054] The coating steel bar of this embodiment, the coating material on its surface is made of following components and weight percentage thereof:

[0055]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a coated steel bar and a preparation method thereof. The coated steel bar comprises a steel bar and a coating on the surface of the steel bar; the coating is prepared from, by weight, 20%-35% of epoxy resin, 30%-50% of aminopropyltriethoxysilane, 12%-25% of ethyl orthosilicate and 12%-25% of absolute ethyl alcohol. The preparation method comprises the steps that sand blasting is conducted to make the roughness of the surface of the steel bar range from 3.0 micrometers to 3.5 micrometers; gravel and dust on the surface of the steel bar are removed, and it is guaranteed that the surface of a workpiece is clean and without any greasy dirt or other foreign bodies; the coating is evenly coated on the surface of the treated steel bar, and the thickness of a dry film is required to reach 5-15 micrometers; curing molding is conducted at the room temperature, and the coated steel bar is obtained. The coated steel bar is formed by spraying coating materials on the surface of the steel bar, and the hardness and the corrosion resistance of the coated steel bar are greatly improved.

Description

technical field [0001] The invention relates to a steel bar in the technical field of construction engineering, in particular to a steel bar that can be coated with a coating and a preparation method thereof. Background technique [0002] Reinforced concrete is widely used in the field of civil engineering as an economical and durable material. Under the action of various external environmental conditions, the durability of concrete will decline, and the protection of its internal steel bars will gradually be lost. When the concrete outside the steel bar becomes neutral or cracks, the steel bar loses the protection of the alkaline concrete, the passivation film is destroyed and begins to rust. Corroded steel bars not only lose the cross-sectional area, but also degrade the properties of the material, which affects the bearing capacity and performance of concrete components. Steel bar corrosion is the most important and direct factor that causes the durability decline of con...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09D163/00C09D7/12C09D5/08E04C5/01
Inventor 杨海华赵鸣李迥李尚龙
Owner SUNYOUNG CONSTR GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com