KR19980033419A - Method for preparing a water soluble release agent - Google Patents

Abstract

The present invention provides a novel water-soluble solution containing 100 wt% of a mixture of wax and metal soap mixed from 1: 0.1 to 0.1: 1 in order to improve the disadvantages of the conventional water-soluble release agent and to prepare an excellent water-soluble release agent that does not have any problems in general use. The focus was on the development of release agents. Examples of the wax used herein include chlorides in which Li, Zn, Al, Ca, Mg, Co, Cu, Ti, Na, Zr, K, Ba, Mn, Sn, etc. are substituted with C5-C25 saturated or unsaturated fatty acids. The fatty acid amine substituents used are those obtained by substituting triethylenetetraamine, diethylenetriamine, tetraethylenepentaamine, and the like into fatty acids.

Description

Method for preparing a water soluble release agent

The present invention relates to a method for producing a water-soluble release agent used in curing of concrete.

As the industry develops, a lot of cured concrete is used in various constructions, and the curing by molds, panels, foams, etc. has been increased in the field. Accordingly, release agents used in molds, panels, and foams, which are mainly used for curing, have become more important than in the past.

In general, mold release agents include oil-soluble mold release agents and water-soluble release agents, and oil-soluble release agents are mostly used by mixing rosin, wax, oil, and polymers in mineral oils. Is common.

Recently, due to the importance of the environment, the use of mineral oils is gradually limited, in particular, the workplace environment of companies that cure and sell centrifuge tubes, fume tubes, piles, etc. is becoming important, so the conversion to a water soluble release agent is concerned. In particular, the oil or mineral oil release agent used in curing, such as buildings, bridges, high-speed trains, such as contamination of the soil, rivers, rivers around the construction site is causing a bad effect on the environment.

Due to this necessity, there is a tendency to increase the use of water-soluble releasing agents.

However, since the conventional water-soluble release agent is used by dispersing soap, wax, surfactant, polymer, etc. in water alone or in combination, it is less stable than the useful release agent, and the film has a weak release effect when curing steam or vibrating objects. There was a disadvantage of disappearing.

In addition, since the weather resistance and water repellency after the application of the release agent applied for a long time after the application of the bridge or high-speed railway construction, because the release agent film is easily damaged due to ultraviolet rays and rainy weather, many restrictions have been followed.

In order to compensate for these drawbacks, the water-soluble release agent is used in the product containing a large amount of mineral organic or oil group was not actually a completely water-soluble release agent, in particular, most of the products close to useful enough to be concerned about the ignition in the tunnel or closed.

The present invention is to solve such a problem,

It is an object of the present invention to provide a method for preparing a water-soluble release agent which is free of mixed contamination and which can be used universally.

Another object of the present invention is to provide a method for preparing a water-soluble releasing agent that can maintain a coating film for a long time due to durability and waterproofness, even after UV releasing agent coating and UV and rain water.

This object can be achieved as a water-soluble releasing agent to which 100 wt% of a dispersion in which wax and metal soap are mixed from 1: 0.1 to 0.1: 1 is added.

In particular, such a water-soluble releasing agent can be achieved by substituting a fatty acid amine substituent or by adding a small amount of various preservatives, antioxidants, and surfactants after fatty acid amine substitution.

Hereinafter, a method for preparing a water-soluble release agent of the present invention will be described in detail as specific examples.

In order to manufacture excellent water-soluble release agent that can be used universally in curing of concrete, the emphasis was on the development of a new water-soluble release agent containing 100 wt% of a dispersion in which wax and metal soap were mixed from 1: 0.1 to 0.1: 1. .

Examples of the wax used herein include chlorides in which Li, Zn, Al, Ca, Mg, Co, Cu, Ti, Na, Zr, K, Ba, Mn, Sn, etc. are substituted with C5-C25 saturated or unsaturated fatty acids. The fatty acid amine substituents used are those obtained by substituting triethylene tetraamine, diethylene triamine, tetraethylene pentaamine, and the like into fatty acids.

The characteristics of Examples 1 and 2 carried out according to the use of the fatty acid amine substituents are as follows.

Example 1

Product 1 was obtained by mixing 5 wt% of ethylene triamine tetraamine substituent with 100 wt% of a dispersion (solid content of 30%) in which paraffin wax and calcium-stearate were mixed in a 1: 1 ratio. The product 1 was subjected to a release test by the following test method to obtain the results shown in Table 1.

-Test Methods-

For the test mold shaping, the test mold for the test specimen of KSL 5105 (hydraulic cement mortar compressive strength test method) 2.4 shall be used. The concrete mold is evenly applied to the wall of the molding frame, and then the general mold of Portland cement specified in KSL 5201 (Portland Cement) and sand and water specified in KSL 5001 (Standard Yarn) are mixed in a 1: 2.45: 0.48 weight ratio. The test body shall be molded according to the test method of KSL 5105 Clause 9, cured for 48 hours at room temperature and humidity, and then demolded. Test specimens are demolded three.

TABLE 1

Example 2

Product 2 was obtained by mixing 8 wt% of palmitic acid triethylenetetraamine substituent with 100 wt% of a paraffin wax and a zinc-stearate mixture of 3: 1 (20% solids). Product 2 was subjected to a release test using the same test method as in [Example 1] to obtain the results shown in Table 2.

TABLE 2

As such, when only general waxes of water-soluble mold release agents are used or surfactants or polymers are mixed and used, the strength of the film is weak, so that effective release is not possible during long-term storage, vibration, or steam curing after application of the mold release agent. As can be seen from the addition of the metal soap and fatty acid amine substituents, the film is more excellent in strength. In Example 1, the strength of the film in the metal soap, and in Example 2, the fatty acid amine substituent with the metal soap It was possible to obtain higher film strength.

In another embodiment, various preservatives, antioxidants, and the like in a water-soluble releasing agent in which 0.1-50 wt% of a fatty acid amine substituent is added to 100 wt% (solid content of 10-50) of a dispersion in which wax and metal soap are mixed from 1: 0.1 to 0.1: 1. A small amount of surfactant may be added.

At this time, various preservatives, antioxidants, surfactants, etc. are widely used in existing water-soluble soluble agents, of course, can be used by adding or subtracting the surroundings during the release process of concrete.

As described above, the present invention is a complete water-soluble releasing agent, there is no occurrence of grease produced from the oil-soluble releasing agent, no oil stains due to the oil, and the circular preservation of the mold is possible. After coating the release agent in the field by maintaining the coating film for a long time even in the ultraviolet and rain water, after the release agent is applied in the field, it can be usefully used even where a long period of small.

The present invention is a practical use, it can be usefully applied to the mold of pre-cast concrdte such as centrifugal, pile, building wall, etc., and curing under certain conditions when applied to the surface of panels, saddles, etc. in construction and civil engineering works Easily released at In addition, in the oil-soluble mold release agent, the water-soluble release agent of the present invention is also used in the molten styrene foam molten plate pattern plate to facilitate the release while maintaining a clean surface improves workability. Especially, it is very useful in the place where reinforcement work is required for a long time after application of release agent when curing bridge or high-speed railway large structures due to its excellent durability and waterproofness.

Claims (3)

A method for producing a water-soluble releasing agent using 100 wt% (solid content 10-50) of a dispersion in which wax and metal soap are mixed from 1: 0.1 to 0.1: 1. A method for producing a water-soluble releasing agent, wherein 0.1-50 wt% of a fatty acid amine substituent is added to 100 wt% (solid content of 10-50) of a dispersion in which wax and metal soap are mixed from 1: 0.1 to 0.1: 1. A small amount of various preservatives, antioxidants, and surfactants is added to the water-soluble releasing agent in which 0.1-50 wt% of the fatty acid amine substituent is added to 100 wt% (solid content of 10-50) of the dispersion in which wax and metal soap are mixed from 1: 0.1 to 0.1: 1. Manufacturing method of added water soluble release agent