Concrete releasing agent for aluminum alloy template of building

A technology of concrete release agent and aluminum alloy formwork, which is applied in the field of coatings in the construction field, and can solve problems such as erosion and blistering, intensified corrosion, and roughness on smooth surfaces

Inactive Publication Date: 2015-05-20
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the protective layer of aluminum alloy material is composed of aluminum oxide film, it has good corrosion resistance to acidic medium, but in alkaline medium, aluminum oxide reacts with alkali to form aluminate, the protective film is destroyed, and the corrosion is intensified , resulting in rough surface erosion and blistering

Method used

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  • Concrete releasing agent for aluminum alloy template of building
  • Concrete releasing agent for aluminum alloy template of building

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In a stainless steel reaction kettle equipped with a disc dispersing and stirring device, heat up to 40-60°C, add 10 parts of soybean oil, 3 parts of stearic acid, 1 part of monoglyceride stearate, and a terpene resin with a softening point of 100°C 1 part, 0.05 part of sodium hydroxide, after all the solids are dissolved, add 3 parts of mica powder, stir until the mixture is evenly dispersed. Transfer the above-prepared mixture into a sand mill dispersing device, grind and disperse for 1-3 hours, until the solid particle size of the dispersion is less than 75 μm. Add 3 parts of solvent to adjust the viscosity of the dispersed material to 250-500cp.

Embodiment 2

[0038] In a stainless steel reaction kettle equipped with a disc dispersing and stirring device, heat up to 40-60°C, add 10 parts of corn oil, 1 part of stearic acid, 2 parts of oleic acid, 1 part of monoglyceride stearate, and the softening point is 1 part of terpene resin at 100°C, 0.05 part of sodium hydroxide, after all the solids are dissolved, add 3 parts of talcum powder, and stir until the mixture is evenly dispersed. Transfer the above-prepared mixture into a sand mill dispersing device, grind and disperse for 1-3 hours, until the solid particle size of the dispersion is less than 75 μm. Add 3 parts of solvent to adjust the viscosity of the dispersed material to 150-450cp.

Embodiment 3

[0040]In a stainless steel reaction kettle equipped with a disc dispersing and stirring device, heat up to 40-60°C, add 10 parts of rapeseed oil, 3 parts of stearic acid, 1 part of monoglyceride stearate, and a terpene with a softening point of 100°C 1 part of resin, 0.05 part of sodium hydroxide, after all the solids are dissolved, add 3 parts of barite powder, stir until the mixture is evenly dispersed. Transfer the above-prepared mixture into a sand mill dispersing device, grind and disperse for 1-3 hours, until the solid particle size of the dispersion is less than 75 μm. Add 5 parts of solvent to adjust the viscosity of the dispersed material to 250-500cp.

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Abstract

The invention provides a concrete releasing agent for an aluminum alloy template of a building. The releasing agent comprises the following components in parts by weight: 8-15 parts of grease, 1-3 parts of fatty acid monoglyceride or fatty acid diglyceride, 2-5 parts of fatty acid, 1-3 parts of resin, 0.05-0.5 parts of basic metal compound, 3-5 parts of inorganic filler and 1-5 parts of solvent. The releasing agent coats the aluminum alloy template of the building and is used in the concrete pouring technology, the concrete releasing quality is good without obvious blister, and the releasing agent residue surface matter is easily removed and the releasing agent is suitable for use for single or multiple times, and the service life of the template is prolonged.

Description

technical field [0001] The invention belongs to the paint used in the construction field, and in particular relates to a release agent for aluminum alloy formwork concrete used in construction. Background technique [0002] Concrete molding needs to be fixed by formwork, and the formwork must be removed after the concrete has a certain strength. Concrete release agent, also known as template separation agent or release agent, is a kind of coating or spraying on the inner wall of the formwork, which acts as isolation and lubrication between the formwork and the concrete surface, to overcome the bond between the formwork and the concrete surface, The admixture that enables the concrete to be separated from the formwork smoothly when the formwork is removed, which not only keeps the shape of the concrete intact but also protects the formwork from damage. Concrete release agent is mainly used in large-scale construction, slip form construction, prefabricated component forming m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04B28B7/38C10N40/36
Inventor 张青周寅宁罗正鸿
Owner SHANGHAI JIAO TONG UNIV
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