CN1986709B - Elastic paint - Google Patents

Abstract

The elastic paint consists of water in 13.0-15.0 weight portions, cosolvent propylene glycol in 1.5-2.5 weight portions, dispersant Hydropalat in 34 1.0-2.0 weight portions, wetting agent Hydropalat 306 in 0.1-0.3 weight portions, defoaming agent Defoamer 334 in 0.1-0.3 weight portions, defoaming agent FoamStar A10 in 0.1-0.3 weight portions, antiseptic Alex 251 in 0.1-0.3 weight portions, mildewinhibitor Alex 254 in 0.1-0.3 weight portions, pigment R706 in 16.0-18.0 weight portions, stuffing 1250 mesh BaSO4 in 13.0-15.0 weight portions, stuffing MXK401 in 8.0-15.0 weight portions, emulsion Nacrylic 2800 in 30.0-40.0 weight portions, plasticizer EFC-100 in 1.0-3.0 weight portions, pH regulator AMP-95 in 0.1-0.5 weight portions, and thickener Thicklevelling 632 in 0.3-0.6 weight portions.The elastic paint is used for inner and outer walls, and has low cost and environment friendship.

Description

A kind of elastic coating

[technical field]

The present invention relates to paint field, particularly be a kind of elastic coating.

[background technology]

Buildings is many to be basic unit with the cement sand plaster.Motar reduces the sclerosis crack that produces owing to volume when sclerosis; During temperature variation; the thermal cracking that produces owing to expanding with heat and contract with cold; when doing wet the variation, the desciccation crack that the drying shrinkage that rises owing to wetting produces is during freeze thawing; the freeze thawing crack that produces owing to the water freezing volumetric expansion; basic unit's sedimentation produces structural cracks etc., causes protecting the decorative coveringn cracking, and rainwater enters body of wall with the crack seepage; intensification jeopardizes buildings to the destruction of buildings as steel bar corrosion etc.Elastic coating keeps higher elasticity, toughness and elongation in certain temperature range, be coated on substrate surface, films when basic unit's body of wall cracks and can not rupture, and has waterproofing and anti-leakage leakage property preferably.Elastic coating is filmed and can be hidden the following capillary fracture usually: the crack is below 0.2mm, and elasticity is flat to be coated with and can to cover in, and production elastic coating starting material emulsion, wetting dispersing agent, defoamer are selected very important.

Along with the enhancing of people's environmental consciousness, particularly various countries' environmental regulation has promoted to be the development of the low-contamination type coating of representative with the water-borne coatings to the strict demand of volatile organic compounds in the coating system (VOC) content.

[summary of the invention]

The purpose of this invention is to provide a kind of elastic coating that in ordinary emulsion adds, adds softening agent and prepare, this elastic coating is used for interior external wall of building elasticity, the micro-elasticity face is coated with or is coated with, hide hair line, can reduce the cost of producing elastic coating and micro-elasticity coating.

A kind of elastic coating consists of by weight:

13.0～15.0 parts in water;

Solubility promoter, 1.5～2.5 parts of propylene glycol;

Dispersion agent 34,1.0～2.0 parts;

Wetting agent 306,0.1～0.3 part;

334,0.1～0.3 part of defoamer Defoamer;

Defoamer A10,0.1～0.3 part;

251,0.1～0.3 part of sanitas Alex;

254,0.1～0.3 part of mould inhibitor Alex;

Pigment R706,16.0～18.0 parts;

Filler, 1250 purpose BaSO ₄, 13.0～15.0 parts;

Filler MXK401,8.0～15.0 parts;

2800,30.0～40.0 parts of emulsion Nacrylic;

1.0～3.0 parts of softening agent EFC-100;

PH value conditioning agent AMP-95,0.1～0.5 part;

632,0.3～0.6 part of thickening material Thicklevelling.

Elastic coating of the present invention is used for interior external wall of building elasticity, the micro-elasticity face is coated with or is coated with, and hides hair line, can reduce the cost of producing elastic coating and micro-elasticity coating, belongs to environmental protection coating material, reduces VOC.

[embodiment]

The dispersion agent that is added among the present invention is sodium polyacrylate, polyacrylic acid amine salt, polyacrylic acid and copolymer-maleic anhydride salt, molecular weight ranges 5000～6000, can disperse inorganic color stuffing effectively, and be adsorbed on the color stuffing surface, hydrophilic color stuffing is carried out the surface hydrophobicity modification, simultaneously and between the fluoropolymer resin good consistency is arranged, can improve the water resisting property of coating effectively; Emulsion is acrylic polymer emulsion (i.e. a Chang Gui ordinary emulsion), and solids content is greater than 42%, second-order transition temperature＜30 ℃, and pH value 7.0～8.0, emulsion particle diameter are 0.1～0.5 μ m, add nonvolatile softening agent, improve coating elasticity.

Wetting agent among the present invention is a nonionogenic tenside, and composition is polyether-modified polysiloxane or amber sulfonate, and the surface tension of the aqueous solution (0.5%) is 20 dynes per centimeter ²Defoamer is mineral oil and surfactant mixture; Thickening material is polyacrylic acid and polyurethane associative thickener; Softening agent is the propylene glycol glycerolipid; Sanitas is an isothiazolinone; The PH conditioning agent is 2-amino-2-methyl-1-propanol (AMP-95).

The production process of elastic coating is: add solubility promoter, dispersion agent, wetting agent, defoamer, sanitas, mould inhibitor, filler, pigment in water successively, high speed dispersion is qualified to fineness, add softening agent, emulsion, defoamer, thickening material and PH conditioning agent, obtain the finished product elastic coating at last.

During the present invention is raw materials used, dispersion agent

34, wetting agent 306, sanitas Alex 251, mould inhibitor Alex 254, defoamer Defoamer 334, defoamer A10, softening agent EFC-100 and thickening material Thicklevelling 632 provide by COGNIS company; Pigment R706 is E.I.Du Pont Company's product; PH conditioning agent AMP-95 is provided by Dow Chemical; 1250 purpose BaSO ₄Filler effluent north Xinji provides; Filler MXK401 is provided by Meng Xi company; Emulsion Nacrylic 2800 is provided by national starch company.

Example 1:

Weighing 15.0g water; 2.0g solubility promoter propylene glycol; 1.5g dispersion agent

34; 0.1g wetting agent

306; 0.15g sanitas Alex 251; 0.2g mould inhibitor Alex 254; 0.15g defoamer Defoamer 334; 16.0g pigment R706; 14.0g1250 order BaSO ₄Filler; 15.0g filler MXK401; 0.15g defoamer A10; 30.0g emulsion Nacrylic 2800; 1.0g softening agent EFC-100; 0.6g thickening material Thicklevelling 632; 0.3gPH conditioning agent AMP95.Add solubility promoter, dispersion agent, wetting agent, defoamer Defoamer 334, sanitas, mould inhibitor, filler, pigment in water successively, high speed dispersion is qualified to fineness, adds softening agent, emulsion, defoamer A10, thickening material and PH conditioning agent obtain the finished product elastic coating at last.

Example 2:

Weighing 14.0g water; 1.5g solubility promoter propylene glycol; 1.0g dispersion agent

34; 0.3g wetting agent

306; 0.1g sanitas Alex 251; 0.3g mould inhibitor Alex 254; 0.1g defoamer Defoamer 334; 17.0g pigment R706; 15.0g1250 order BaSO ₄Filler; 8.0g filler MXK401; 0.3g defoamer A10; 40.0g emulsion Nacrylic 2800; 2.0g softening agent EFC-100; 0.3g thickening material Thicklevelling 632; 0.5gPH conditioning agent AMP95.Preparation process is with embodiment 1.

Example 3:

Weighing 13.0g water; 2.5g solubility promoter propylene glycol; 2.0g dispersion agent

34; 0.2g wetting agent 306; 0.3g sanitas Alex 251; 0.1g mould inhibitor Alex 254; 0.3g defoamer Defoamer 334; 18.0g pigment R706; 13.0g1250 order BaSO ₄Filler; 11.0g filler MXK401; 0.1g defoamer A10; 35.0g emulsion Nacrylic 2800; 3.0g softening agent EFC-100; 0.5g thickening material Thicklevelling 632; 0.1gPH conditioning agent AMP95.Preparation process is with embodiment 1.

Embodiment gained elastic coating performance such as following table:

The elastic coating that adds softening agent and prepare in ordinary emulsion adds, this elastic coating all reaches the JG/T172-2005 specified standards after normality and thermal treatment, and stablizes no abnormal when accelerated deterioration stores.External wall of building elasticity, micro-elasticity face are coated with or are coated with in being used for, and hide hair line, can reduce the cost of producing elastic coating and micro-elasticity coating.

Claims (1)

1. elastic coating consists of by weight:

13.0～15.0 parts in water;

1.5～2.5 parts of propylene glycol;

Dispersion agent

34,1.0～2.0 parts;

Wetting agent

306,0.1～0.3 part;

334,0.1～0.3 part of defoamer Defoamer;

Defoamer A10,0.1～0.3 part;

251,0.1～0.3 part of sanitas Alex;

254,0.1～0.3 part of mould inhibitor Alex;

Pigment R706,16.0～18.0 parts;

1250 purpose BaSO ₄, 13.0～15 parts;

Filler MXK401,8.0～15.0 parts;

2800,30.0～40.0 parts of emulsion Nacrylic;

Softening agent EFC-100,1.0～3.0 parts;

PH value conditioning agent AMP-95,0.1～0.5 part;

632,0.3～0.6 part of thickening material Thicklevelling.