Elastic waterproof emulsion

A waterproof emulsion and elastic technology, applied in the field of preparation of elastic waterproof emulsion, can solve the problems of loss of waterproof function, emulsion does not have calcium ion stability, demulsification, etc.

Active Publication Date: 2016-03-02
湖南金利源新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method generates a complex of metal ions and carboxyl groups by adding polyvalent metal ion compounds and carboxyl groups, and the complexes will be dissolved under alkaline conditions, so it is not suitable for waterproofing of strongly alkaline concrete. The emulsion prepared by the above methods does not have sufficient calcium ion stability, and is not suitable for mixing with strong alkaline cement mortar, otherwise it will cause demulsification and lose the waterproof function

Method used

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  • Elastic waterproof emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In a 2000ml three-necked reaction kettle equipped with a mechanical stirrer, a condenser and a constant pressure funnel, add 1g of buffering agent sodium bicarbonate and 250ml of water, stir to dissolve and heat to 80°C; mix 196g of styrene, 140g of butyl acrylate, and 145g of isooctyl ester, 7.5g of hydroxyethyl acrylate, 7.5g of acrylic acid, 4g of the composition of hexanediol diacrylate and trimethylolpropane triacrylate, and 4g of diacetone acrylamide were stirred and dissolved completely to obtain mixed monomers, which were Pour it into 250ml of water dissolved with 1.8g of reactive emulsifier, 1.8g of anionic emulsifier, and 3.6g of nonionic emulsifier under high-speed stirring, emulsify for 15min to obtain pre-emulsified monomer, add 10% of pre-emulsified monomer to the reaction In the kettle, add 1.5g of ammonium persulfate initiator to initiate the polymerization reaction. After the system turns blue and the reflux of the monomer disappears, add the remaining p...

Embodiment 2

[0050] In a 2000ml three-necked reactor equipped with a mechanical stirrer, a condenser and a constant pressure funnel, add 1g of buffering agent sodium bicarbonate and 250ml of water, stir to dissolve and heat to 75°C; mix 290g of vinyl acetate, 198g of butyl acrylate, and Acrylic acid 5g, composition 7.5g of octapentyl glycol diacrylate and pentaerythritol triacrylate, 7.5g of acetoacetoxyethyl acrylate were stirred and dissolved to obtain mixed monomers, which were poured into the dissolved reaction type under high-speed stirring. Put 2g of emulsifier, 2g of anionic emulsifier, and 4g of nonionic emulsifier in 250ml of water, emulsify for 15min to obtain pre-emulsified monomer, add 10% of the pre-emulsified monomer to the reaction kettle, add 1.5g of ammonium persulfate initiator to initiate polymerization Reaction, after the system turns blue and the reflux of the monomer disappears, add the remaining pre-emulsified monomer dropwise, and the addition is completed in about 3...

Embodiment 3

[0052] In a 2000ml three-necked reaction kettle equipped with a mechanical stirrer, a condenser and a constant pressure funnel, add 1g of buffering agent sodium bicarbonate and 250ml of water, stir to dissolve and heat to 50°C; add 25g of glycidyl methacrylate, vinyl chloride 100g, 70g of butyl acrylate, 300g of vinylidene chloride, 5g of tetrahydrophthalic anhydride, 7.5g of diethylene glycol acrylate and butanediol diacrylate, 5g of acetoacetamidoethyl methacrylate, stirred and dissolved completely Obtain the mixed monomer, pour it into 250ml water dissolved with 2g of reactive emulsifier, 2g of anionic emulsifier, and 4g of nonionic emulsifier under high-speed stirring, emulsify for 15min to obtain pre-emulsified monomer, and mix 10% of the pre-emulsified monomer Add it into the reaction kettle, and add 1.5g of redox initiator tert-butyl hydroperoxide and 1.5g of sodium formaldehyde sulfoxylate dropwise at the same time. Add the pre-emulsified monomer and redox initiator in...

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Abstract

The invention discloses an elastic waterproof emulsion, and is characterized in the emulsion is obtained by the steps of carrying out emulsion polymerization of an olefinic compound (a) at least having one unsaturated group in one molecule, an olefinic compound (b) at least having two unsaturated groups in one molecule, an unsaturated compound (c) having a group which can undergo a cross-linking reaction at room temperature in a molecule and an unsaturated compound (d) having a carboxyl or anhydride group under the action of an emulsifier (e), and then adding a compound (f) which is soluble in water and can undergo a chemical cross-linking reaction with the compound (c) at room temperature. The produced elastic emulsion has the characteristics of excellent calcium ion stability, good compatibility with cement, excellent waterproof performance, good anti-cracking performance, simple preparation, low cost and the like, is suitable for the fields of concrete waterproof and cement waterproof mortar, building exterior wall coatings, adhesives and other biological materials, and is especially suitable for the foam concrete waterproof and cement waterproof mortar, the building exterior wall coatings and the like.

Description

technical field [0001] The invention relates to a preparation method of an elastic waterproof emulsion, which belongs to the field of polymer synthesis. As an elastic waterproof emulsion, the invention is mainly used in the fields of concrete waterproof, cement waterproof mortar, building exterior wall coating, adhesive and biological materials, etc., especially suitable for foam concrete waterproofing, cement waterproof mortar, building exterior wall coating, etc. . Background technique [0002] At present, there are more than 10 kinds of external insulation materials for building exterior walls in my country, such as expanded polystyrene (EPS) boards and extruded polystyrene (XPS) boards. These organic insulation boards have the advantages of light weight and good heat preservation effect, but there are Flammable, easy to cause fire and other ills. Foamed concrete is fire-resistant, flame-retardant, non-toxic, and highly safe, which makes up for the defects of organic ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/18C08F220/06C08F222/14C08F220/58C08F2/26C08F2/30C04B24/26C04B24/16C04B38/02C04B28/00C04B103/65C04B111/27
Inventor 张继德汤建新吕晓虹段艳华
Owner 湖南金利源新材料科技有限公司
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