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Adhesive for producing concrete fade curing membrane

A curing film and concrete technology, applied in the direction of non-polymer organic compound adhesives, adhesives, etc., can solve the problem that the performance cannot meet the requirements for the use of concrete water-saving and moisturizing curing films, and cannot effectively bond the bottom film and the mask, and the concrete facade. Maintenance failure and other problems, to achieve the effect of improving the quality of concrete maintenance, broadening the scope of use, and moderate adhesion

Inactive Publication Date: 2013-10-23
湖南圣华节水科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the weight of the polymer water-absorbing material increases by about 200 times after absorbing water, the performance of the adhesives currently used in the market cannot meet the requirements for the use of concrete water-saving and moisturizing curing membranes, resulting in the following problems in practical application:
[0004] 1. If the acrylic monomer is used as the main bonding component, peroxide is added as an auxiliary agent, and other auxiliary raw materials are added at the same time, the synthesized adhesive has a strong adhesive force at one time. , the bonding strength between the base film and the mask is good; but during the maintenance and construction of the curing film, the adhesive loses its rewetting function, resulting in a significant decrease in the water absorption capacity of the polymer water-absorbing material sandwiched between the base film and the mask; serious Affect the quality of concrete curing, and even lead to curing failure
[0005] 2. For example, stamp adhesives based on polyvinyl alcohol and modified starch have the function of rewetting, but their adhesive force is too small in the rewetting state to effectively bond the base film and mask. After the molecular water-absorbing material absorbs water and the weight increases, the bottom film and the mask slip off, resulting in the failure of the concrete facade maintenance

Method used

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  • Adhesive for producing concrete fade curing membrane

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0022] The present invention is that the modified rosin in the embodiment all adopts the following techniques to modify:

[0023] Heat the rosin to 85°C to melt, take 0.13% of the mass of the rosin and dissolve it in alcohol with a volume concentration of 75%, and add the sodium hydroxide alcohol solution to the rosin melt while stirring to realize the modification of the rosin.

Embodiment 1

[0025] Take 5 kg of polyvinyl formal, 10 kg of modified rosin, 1 kg of industrial grade corn starch with an acidity of 16, 20 kg of acrylic acid, 30 kg of acrylamide with a content of 99%, and 34 kg of water, and heat to 90~ Stir evenly at 95°C to obtain an adhesive that meets the requirements. The mass percent of each component of this embodiment is shown in Table 1:

[0026] Table 1

[0027] Element

Weight (kg)

Polyvinyl formal

5

Modified rosin

10

corn starch

1

acrylic

20

Acrylamide

30

[0028] The adhesive prepared in this embodiment is painted on the base film or facial film at 100 g / square meter, and the mixture obtained by mixing methyl methacrylate and acrylic acid in a mass ratio of 2:1 is sandwiched between the base film and the facial film. The super-absorbent polymer material is used to compact the base film and the mask and dry it to prepare the concrete facade curing film.

...

Embodiment 2

[0031] Take 15 kg of polyvinyl formal, 20 kg of modified rosin, 1 kg of industrial grade corn starch with an acidity of 17, 20 kg of acrylic acid, 30 kg of acrylamide with a content of 98.8%, and 14 kg of water, and heat to 90~ Stir evenly at 95°C to obtain an adhesive that meets the requirements. The mass percent of each component of this embodiment is shown in Table 2:

[0032] Table 2

[0033] Element

Weight (kg)

Polyvinyl formal

15

Modified rosin

20

corn starch

1

acrylic

20

Acrylamide

30

[0034] The adhesive prepared in this embodiment is applied on the base film or the facial film at 2500 g / m2, starch is sandwiched between the base film and the facial film as a super absorbent polymer material, and the base film and the facial film are compacted. After drying, the concrete facade curing film is prepared.

[0035] During the curing construction of the concrete facade curing film, wa...

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PUM

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Abstract

An adhesive for a producing concrete fade curing membrane comprises the following components of polyvinylformal, modified rosin, corn starch, crylic acid, acrylamide and water, wherein the crylic acid has a good adhesive performance, the polyvinylformal, the modified rosin, the corn starch and the acrylamide are water-soluble adhesive ingredients, the adhesive which is moderate in adhesive performance and applicable to the concrete fade curing membrane can be produced under normal temperatures and pressure, and water sucking performances of core materials of the curing membrane are not influenced. The adhesive is reasonable in component proportion, easy to process and manufacture, moderate in adhesive force, capable of effectively improving qualities of the concrete water-saving moisture-keeping curing membrane, broadening usage ranges and improving concrete curing qualities and applicable to industrialization application and has a rewetting function.

Description

technical field [0001] The invention relates to an adhesive, in particular to an adhesive for producing a concrete facade curing film, and belongs to the technical field of adhesive material preparation. Background technique [0002] Concrete water-saving and moisturizing curing film is a new type of concrete curing material. It has special functions that other concrete curing materials do not have, such as water saving, moisturizing, heat preservation, effective inhibition of concrete micro-cracks and early carbonation. Its core technology is the application of polymer water-absorbing materials. With the characteristics of fast water absorption and slow release of water, the product is watered once during concrete curing, and does not need to be watered again during the entire concrete curing cycle. After the product is put into the market, it has been widely used in the field of flat concrete maintenance such as highway poor concrete base, concrete pavement, airport, etc.,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/02C09J4/06C04B40/04
Inventor 刘晓剑唐冬汉罗建阳
Owner 湖南圣华节水科技股份有限公司