阅读说明：本技术 一种新型混凝土制品用脱模剂及其制备方法 (Novel release agent for concrete product and preparation method thereof ) 是由 王海燕 于 2020-11-12 设计创作，主要内容包括：本发明提供一种新型混凝土制品用脱模剂及其制备方法,包括以下重量份数组分：白油：20-40份；阻锈剂：1-3份；高分子聚合物：0.5-1.0份；去离子水：51-74.5份；乳化剂：15-27份；所述乳化剂为乙氧基化异十三醇、山梨醇酐油酸酯中的一种或两种的混合。本发明的脱模剂,成膜性好,脱模效果比传统脱模剂提升明显,最重要的是相对于传统的水包油型脱模剂对钢模板不产生锈蚀作用,可以喷涂施工,提高了施工效率。(The invention provides a novel release agent for concrete products and a preparation method thereof, wherein the release agent comprises the following components in parts by weight: white oil: 20-40 parts; a rust inhibitor: 1-3 parts; high molecular weight Polymer: 0.5-1.0 part; deionized water: 51-74.5 parts; emulsifier: 15-27 parts; the emulsifier is one or a mixture of two of ethoxylated isotridecanol and sorbitan oleate. The release agent disclosed by the invention is good in film forming property, the release effect is obviously improved compared with that of the traditional release agent, and most importantly, compared with the traditional oil-in-water release agent, the release agent does not generate a rust effect on a steel template, can be applied to spraying construction, and improves the construction efficiency.)

1. The novel release agent for the concrete product is characterized by comprising the following components in parts by weight:

white oil: 20-40 parts;

a rust inhibitor: 1-3 parts;

high molecular weight Polymer: 0.5-1.0 part;

deionized water: 51-74.5 parts;

emulsifier: 15-27 parts;

the emulsifier is one or a mixture of two of ethoxylated isotridecanol and sorbitan oleate.

2. The novel release agent for concrete products as claimed in claim 1, wherein said high-molecular polymer is a crosslinked polyacrylate.

3. The novel release agent for concrete products as claimed in claim 2, wherein said rust inhibitor is triethanolamine oleate soap.

4. The novel concrete product release agent according to claim 3, wherein the emulsifier is a mixture of ethoxylated isotridecanol and sorbitan oleate in a mass ratio of 1: 1-3.

5. The novel release agent for concrete products as claimed in claim 4, characterized by comprising the following components in parts by weight:

white oil: 25-35 parts;

a rust inhibitor: 1.5-2.2 parts;

high molecular weight Polymer: 0.6-0.8 part;

deionized water: 55-74 parts;

emulsifier: 17-22 parts.

6. The novel release agent for concrete products as claimed in claim 5, characterized by comprising the following components in parts by weight:

30 parts of white oil;

1.9 parts of triethanolamine oleate soap;

0.7 part of crosslinking polyacrylate;

73.3 parts of deionized water;

emulsifier: 19 parts of (A).

7. The preparation method of the novel release agent for the concrete product is characterized by comprising the following steps of: firstly weighing 20-40 parts of white oil, then respectively adding 1-3 parts of triethanolamine oleate soap and 0.5-1.0 part of cross-linked polyacrylate, uniformly stirring, then adding 15-27 parts of emulsifier, emulsifying at 1000-4000r/min for 5-15min, finally adding 51-74.5 parts of deionized water while stirring, and after adding the deionized water, continuously stirring for 20-40min to obtain the finished product.

Technical Field

The invention belongs to the technical field of concrete, and particularly relates to a novel release agent for a concrete product and a preparation method thereof.

Background

The traditional concrete products are usually produced by recycling waste engine oil, mineral oil, vegetable oil and even some kitchen waste grease purificates as release agents. The product has no obvious technical requirements, the quality control threshold is low, the appearance quality of the produced concrete is poor, and even the interface of the steel bar and the concrete is affected, so that the structural strength of the concrete is affected. In addition, emulsion release agents generally popularized in the market have poor film forming property with templates, influence the release effect and generate corrosion action on steel templates.

Disclosure of Invention

In view of the above, the invention provides a novel release agent for concrete products and a preparation method thereof.

The technical scheme of the invention is as follows:

the novel release agent for the concrete product is characterized by comprising the following components in parts by weight:

white oil: 20-40 parts;

a rust inhibitor: 1-3 parts;

high molecular weight Polymer: 0.5-1.0 part;

deionized water: 51-74.5 parts;

emulsifier: 15-27 parts;

the emulsifier is one or a mixture of two of ethoxylated isotridecanol and sorbitan oleate.

Further, the high molecular polymer is cross-linked polyacrylate.

Further, the rust inhibitor is triethanolamine oleate soap.

Further, the emulsifier is a mixture of ethoxylated isotridecanol and sorbitan oleate, and the mass ratio of the ethoxylated isotridecanol to the sorbitan oleate is 1: 1-3.

The invention is based on white oil, and adopts ethoxylated isotridecanol, sorbitan oleate and cross-linked polyacrylate as main film forming matter, so that the release agent has the features of high adhesion, high demolding effect, high flushing resistance, high temperature resistance, etc.

Further, the release agent comprises the following components in parts by weight:

white oil: 25-35 parts;

a rust inhibitor: 1.5-2.2 parts;

high molecular weight Polymer: 0.6-0.8 part;

deionized water: 55-74 parts;

emulsifier: 17-22 parts.

Further, the release agent comprises the following components in parts by weight:

30 parts of white oil;

1.9 parts of triethanolamine oleate soap;

0.7 part of crosslinking polyacrylate;

73.3 parts of deionized water;

emulsifier: 19 parts of (A).

In the invention, the crosslinking polyacrylate is a copolymer which takes acrylate as a monomer and is crosslinked into macromolecules through chemical bonds between macromolecular chains; triethanolamine oleic soap is a nonionic surfactant formed by amidating oleic acid and triethanolamine, is generally used as a finishing agent and a softening agent, is used as a metal cleaning agent, and can play a role in short-term rust prevention. Ethoxylated isotridecyl alcohol, as emulsifier E-1303, is a condensate of an isomeric alcohol with ethylene oxide; sorbitan oleate, as emulsifier S-80, is insoluble in water, soluble in hot oil and organic solvents, insoluble in isopropanol, tetrachloroethylene, xylene, cottonseed oil, mineral oil, etc.

The preparation method of the novel release agent for the concrete product is characterized by comprising the following steps of: firstly weighing 20-40 parts of white oil, then respectively adding 5-8 parts of triethanolamine oleate soap and 0.5-1.0 part of cross-linked polyacrylate, uniformly stirring, then adding 15-27 parts of emulsifier, emulsifying at 1000-4000r/min for 5-15min, finally adding 51-74.5 parts of deionized water while stirring, and after adding the deionized water, continuously stirring for 20-40min to obtain the finished product.

The release agent disclosed by the invention is good in film forming property, the release effect is obviously improved compared with that of the traditional release agent, and most importantly, compared with the traditional oil-in-water release agent, the release agent does not generate a rust effect on a steel template, can be applied to spraying construction, and improves the construction efficiency.

The invention has the beneficial effects that:

by using the release agent, the member after concrete molding and demolding has high surface smoothness, no mold sticking phenomenon and uniform color;

compared with blank reinforcing steel bars, the bond stress between the reinforcing steel bars coated with the lubricating oil and concrete is slightly reduced by about 5 percent and is greatly lower than the bond stress between the reinforcing steel bars coated with the lubricating oil and the concrete contact surface; meanwhile, the invention does not generate corrosion action on the steel mould.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but it should not be construed that the scope of the present invention is limited to the examples.

Example 1

The novel release agent for the concrete product is characterized by comprising the following components in parts by weight:

white oil: 20 parts of (1);

a rust inhibitor: 1 part;

high molecular weight Polymer: 0.5 part;

deionized water: 51 parts of a mixture;

emulsifier: 19 parts of a mixture;

further, the high molecular polymer is cross-linked polyacrylate.

Further, the rust inhibitor is triethanolamine oleate soap.

Further, the emulsifier is ethoxylated isotridecanol.

The invention is based on white oil, and adopts the ethoxylation isotridecanol and the crosslinking polyacrylate as main film forming matters of the release agent, so that the release agent has the characteristics of strong adhesive force, good release effect, scouring resistance, temperature resistance, capability of being used for many times and the like.

Example 2

The novel release agent for the concrete product is characterized by comprising the following components in parts by weight:

white oil: 40 parts of a mixture;

a rust inhibitor: 3 parts of a mixture;

high molecular weight Polymer: 1.0 part;

deionized water: 74.5 parts;

emulsifier: 27 parts of (1);

further, the high molecular polymer is cross-linked polyacrylate.

Further, the rust inhibitor is triethanolamine oleate soap.

Further, the emulsifier is sorbitan oleate.

The invention is based on white oil, and the sorbitan oleate and the crosslinking polyacrylate are used as main film forming substances of the release agent, so that the release agent has the characteristics of strong adhesive force, good release effect, scouring resistance, temperature resistance, repeated use and the like.

Example 3

A novel release agent for concrete products comprises the following components in parts by weight:

white oil: 25 parts of (1);

a rust inhibitor: 1.5 parts;

high molecular weight Polymer: 0.6 part;

deionized water: 55 parts of (1);

emulsifier: and 17 parts.

Further, the emulsifier is a mixture of ethoxylated isotridecanol and sorbitan oleate, and the mass ratio of the ethoxylated isotridecanol to the sorbitan oleate is 1: 1.

The invention is based on white oil, and adopts ethoxylated isotridecanol, sorbitan oleate and cross-linked polyacrylate as main film forming matter, so that the release agent has the features of high adhesion, high demolding effect, high flushing resistance, high temperature resistance, etc.

Example 4

The novel release agent for the concrete product further comprises the following components in parts by weight:

white oil: 35 parts of (B);

a rust inhibitor: 2.2 parts of;

high molecular weight Polymer: 0.8 part;

deionized water: 74 parts of;

emulsifier: 22 parts of.

Further, the emulsifier is a mixture of ethoxylated isotridecanol and sorbitan oleate, and the mass ratio of the ethoxylated isotridecanol to the sorbitan oleate is 1: 3.

The invention is based on white oil, and adopts ethoxylated isotridecanol, sorbitan oleate and cross-linked polyacrylate as main film forming matter, so that the release agent has the features of high adhesion, high demolding effect, high flushing resistance, high temperature resistance, etc.

Example 5

The novel release agent for the concrete product further comprises the following components in parts by weight:

30 parts of white oil;

1.9 parts of triethanolamine oleate soap;

0.7 part of crosslinking polyacrylate;

73.3 parts of deionized water;

emulsifier: 19 parts of (A).

Further, the emulsifier is a mixture of ethoxylated isotridecanol and sorbitan oleate, and the mass ratio of the ethoxylated isotridecanol to the sorbitan oleate is 1: 2.

The invention is based on white oil, and adopts ethoxylated isotridecanol, sorbitan oleate and cross-linked polyacrylate as main film forming matter, so that the release agent has the features of high adhesion, high demolding effect, high flushing resistance, high temperature resistance, etc.

Example 6

The preparation method of the novel release agent for the concrete product is characterized by comprising the following steps of: firstly weighing 20 parts of white oil, then respectively adding 1 part of triethanolamine oleate soap and 0.5 part of cross-linked polyacrylate, uniformly stirring, then adding 19 parts of emulsifier, emulsifying at 1000r/min for 15min, finally adding 51 parts of deionized water while stirring, and after adding the deionized water, continuously stirring for 20min to obtain a finished product.

Example 7

The preparation method of the novel release agent for the concrete product is characterized by comprising the following steps of: firstly weighing 40 parts of white oil, then respectively adding 3 parts of triethanolamine oleate soap and 1.0 part of cross-linked polyacrylate, uniformly stirring, then adding 27 parts of emulsifier, emulsifying at 4000r/min for 5min, finally adding 74.5 parts of deionized water while stirring, and after adding the deionized water, continuously stirring for 40min to obtain a finished product.

Example 8

The preparation method of the novel release agent for the concrete product is characterized by comprising the following steps of: firstly weighing 30 parts of white oil, then respectively adding 1.9 parts of triethanolamine oleate soap and 0.7 part of cross-linked polyacrylate, uniformly stirring, then adding 19 parts of emulsifier, emulsifying at 1000-4000r/min for 5-15min, finally adding 51-74.5 parts of deionized water while stirring, and after adding the deionized water, continuously stirring for 20-40min to obtain the finished product.

Testing of Release agent Performance

Comparative example 1: commercially available aqueous concrete release agents;

comparative example 2: based on example 3, ethoxylated isotridecanol and sorbitan oleate were not incorporated, and the other components and preparation process were unchanged.

The release agents of examples 3 to 5, comparative example 1 and comparative example 2 were subjected to a release test for C30 general concrete in accordance with concrete article release agent (JC/T949-2005), and the results of the test are shown in the following tables.

TABLE 1 Release agent Performance test results

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art. It should be noted that the technical features not described in detail in the present invention can be implemented by any prior art in the field.