CN104927431A - Composite exterior wall latex paint with addition of activated modified fillers and preparation method thereof - Google Patents

Abstract

The invention discloses composite exterior wall latex paint with the addition of activated modified fillers. The composite exterior wall latex paint with the addition of the activated modified fillers is characterized by being prepared by the following raw materials including, by weight, 30-32 parts of pure acrylic emulsion, eight-10 parts of fluorocarbon emulsion, one-1.5 parts of methacrylic acyloxy propyl group trimethoxy silane, 14-17 parts of anatase type nano-titanium dioxide, six-eight parts of wollastonite, nine-11 parts of zeolite, four-six parts of saw powder, seven-nine parts of pearl wool leftover materials, one-1.5 parts of sldium lauryl sulfate, two-2.5 parts of dry dextrin, two-three parts of carbon powder and 103-110 parts of water. According to the preparation method of the composite exterior wall latex paint with the addition of the activated modified fillers, the method of composition of the pure acrylic emulsion and the luorocarbon emulsion is adopted, the weather resistance of a coated film is improved, the anatase type nano-titanium dioxide is added in a matched mode, and the soiling resistance and the self cleaning effect are further improved; the prepared paint is safe and environmentally friendly, the production cost is low, the good weather resistance, the soiling resistance and the self cleaning property are achieved, the paint is suitable for multiple exterior wall surfaces, and the adhesive force is good.

Description

A kind of composite exterior wall latex coating adding activation modification filler and preparation method thereof

Technical field

The present invention relates to a kind of coating and preparation method thereof, particularly a kind of composite exterior wall latex coating adding activation modification filler and preparation method thereof.

Background technology

Nano titanium oxide has special photocatalysis performance, Superhydrophilic, shielding ultraviolet rays performance, apply it to coating and make it in coating, keep nanoscale regime, not only can improve existing coating weathering resistance poor, the shortcomings such as easy contamination, also can give coating good germ resistance simultaneously, self-cleaning property and the performance that purifies air, wherein nanometer anatase titania is a kind of excellent white powder pigment, there is good light scattering ability, thus whiteness is good, tinting strength is high, strong covering power, there is higher chemical stability and good weathering resistance simultaneously, nonpoisonous and tasteless, human body is had no stimulation.

Exterior coating requires to have elegance, pure and fresh decorative effect and nontoxic, tasteless environment-friendly function, and its performance comprises weathering resistance, resistance to soiling, tint retention, water tolerance, alkali resistance, abrasion resistance, opacifying power, freeze thawing etc.; Also to consider workability, shelf characteric and the film forming properties when low-temperature construction and anticorrosion sex change energy etc. simultaneously.In recent years, along with the deterioration of environment, coat the exterior coating of buildings except being exposed to the sun and rain, be also subject to the impact etc. that acid rain and the ultraviolet that causes because of depletion of the ozone layer strengthen, the resistance to soiling of these factor External Wall coating is had higher requirement.Therefore, raising resistance to soiling and automatically cleaning effect are the developing direction of exterior coating.

Summary of the invention

The object of this invention is to provide a kind of composite exterior wall latex coating adding activation modification filler and preparation method thereof.The present invention not only adds nanometer anatase titania, also the filler such as silica, sawdust is carried out surface active, then add appropriate pore-forming material powdered carbon and carry out granulation, pulverize after final high temperature sintering, the powder made has loose porous feature, there is certain sound-absorbing and the effect of insulation, there is good surface tension simultaneously, make to be uniformly dispersed in coating.The present invention makes coating and has good heat insulation and preservation effect, has good resistance to soiling and automatically cleaning effect simultaneously.

In order to realize object of the present invention, the present invention is by following scheme implementation:

Add a composite exterior wall latex coating for activation modification filler, be made up of the raw material of following weight part: pure-acrylic emulsion 30-32, fluorine carbon emulsion 8-10, methacryloxypropyl trimethoxy silane 1-1.5, nanometer anatase titania 14-17, wollastonite 6-8, zeolite 9-11, sawdust 4-6, PE Foam scrap stock 7-9, sodium laurylsulfate 1-1.5, dry dextrin 2-2.5, powdered carbon 2-3, water 103-110;

A kind of composite exterior wall latex coating adding activation modification filler of the present invention, be made up of following concrete steps:

(1) 200 order powder are ground into by after zeolite, wollastonite, sawdust mixing, then ball milling 20 minutes, water and the sodium laurylsulfate of 3 times amount is added in the mixed powder after ball milling, dispersed paste is formed after stirring 40 minutes with the speed of 600 revs/min, again by dispersed paste spraying dry, control spray-dired inlet temperature 150-180 DEG C, temperature out 60-75 DEG C, obtain surface active filler;

(2) dry dextrin is added in the water of 3 times amount, be stirred to formation viscous liquid, then granulation in tablets press is jointly joined with surface active filler, powdered carbon in step (1), the particle obtained first is sintered 60 minutes at the temperature of 220-250 DEG C, then 500-550 DEG C of sintering 2-2.5 hour is warming up to, be ground into 250 orders after being cooled to room temperature, obtain mixed powder A;

(3) PE Foam scrap stock are ground into 200 orders for subsequent use, the water of residual content is joined in dispersion cylinder, slowly pure-acrylic emulsion, fluorine carbon emulsion, methacryloxypropyl trimethoxy silane is added under the rotating speed of 450-500 rev/min, disperse after 20-30 minute, improve rotating speed to 800 rev/min, add the mixed powder A of step (2), the PE Foam scrap stock of pulverizing and all the other remaining components successively, disperse after 30 minutes, raise speed to 1500 revs/min again, continue dispersion until fineness is less than 60 μm and get final product.

The invention has the beneficial effects as follows: the filler such as silica, sawdust is carried out surface active by the present invention, then add appropriate pore-forming material powdered carbon and carry out granulation, pulverize after final high temperature sintering, the powder made has loose porous feature, there is certain sound-absorbing and the effect of insulation, there is good surface tension simultaneously, make to be uniformly dispersed in coating.

The present invention adopts the method for pure-acrylic emulsion and fluorine carbon emulsion compound, improves the weathering resistance of film, coordinates and adds nanometer anatase titania, further increase resistance to soiling and automatically cleaning effect; The coating safety and environmental protection that the present invention makes, production cost is low, has good weathering resistance, resistance to soiling, self-cleaning property, and be applicable to multiple exterior wall surface, sticking power is good.

Specific embodiments

Below by specific examples, the present invention is described in detail.

Add a composite exterior wall latex coating for activation modification filler, be made up of the raw material of following weight part (kilogram): pure-acrylic emulsion 30, fluorine carbon emulsion 8, methacryloxypropyl trimethoxy silane 1, nanometer anatase titania 14, wollastonite 6, zeolite 9, sawdust 4, PE Foam scrap stock 7, sodium laurylsulfate 1, dry dextrin 2, powdered carbon 2, water 103;

A kind of composite exterior wall latex coating adding activation modification filler of the present invention, be made up of following concrete steps:

(1) 200 order powder are ground into by after zeolite, wollastonite, sawdust mixing, then ball milling 20 minutes, water and the sodium laurylsulfate of 3 times amount is added in the mixed powder after ball milling, dispersed paste is formed after stirring 40 minutes with the speed of 600 revs/min, again by dispersed paste spraying dry, control spray-dired inlet temperature 150-180 DEG C, temperature out 60-75 DEG C, obtain surface active filler;

(2) dry dextrin is added in the water of 3 times amount, be stirred to formation viscous liquid, then granulation in tablets press is jointly joined with surface active filler, powdered carbon in step (1), the particle obtained first is sintered 60 minutes at the temperature of 220-250 DEG C, then 500-550 DEG C of sintering 2-2.5 hour is warming up to, be ground into 250 orders after being cooled to room temperature, obtain mixed powder A;

(3) PE Foam scrap stock are ground into 200 orders for subsequent use, the water of residual content is joined in dispersion cylinder, slowly pure-acrylic emulsion, fluorine carbon emulsion, methacryloxypropyl trimethoxy silane is added under the rotating speed of 450 revs/min, disperse after 20 minutes, improve rotating speed to 800 rev/min, add the mixed powder A of step (2), the PE Foam scrap stock of pulverizing and all the other remaining components successively, disperse after 30 minutes, raise speed to 1500 revs/min again, continue dispersion until fineness is less than 60 μm and get final product.

Water-based exterior wall paint of the present invention adopts the form of construction work of roller coat, brushing, spraying, and coating appearance of film of the present invention is full, smooth, good without lump, glossiness; Water-fast 96 hours, alkaline-resisting 48 hours without exception; Abrasion resistance is tested 2000 times and is passed through, and film is without breakage; Artificial ageing resistance test 600 hours non-foaming, do not peel off, flawless.

Claims (2)

1. one kind is added the composite exterior wall latex coating of activation modification filler, it is characterized in that, be made up of the raw material of following weight part: pure-acrylic emulsion 30-32, fluorine carbon emulsion 8-10, methacryloxypropyl trimethoxy silane 1-1.5, nanometer anatase titania 14-17, wollastonite 6-8, zeolite 9-11, sawdust 4-6, PE Foam scrap stock 7-9, sodium laurylsulfate 1-1.5, dry dextrin 2-2.5, powdered carbon 2-3, water 103-110.

2. a kind of composite exterior wall latex coating adding activation modification filler according to claim 1, is characterized in that, be made up of following concrete steps:

(1) 200 order powder are ground into by after zeolite, wollastonite, sawdust mixing, then ball milling 20 minutes, water and the sodium laurylsulfate of 3 times amount is added in the mixed powder after ball milling, dispersed paste is formed after stirring 40 minutes with the speed of 600 revs/min, again by dispersed paste spraying dry, control spray-dired inlet temperature 150-180 DEG C, temperature out 60-75 DEG C, obtain surface active filler;

(2) dry dextrin is added in the water of 3 times amount, be stirred to formation viscous liquid, then granulation in tablets press is jointly joined with surface active filler, powdered carbon in step (1), the particle obtained first is sintered 60 minutes at the temperature of 220-250 DEG C, then 500-550 DEG C of sintering 2-2.5 hour is warming up to, be ground into 250 orders after being cooled to room temperature, obtain mixed powder A;

(3) PE Foam scrap stock are ground into 200 orders for subsequent use, the water of residual content is joined in dispersion cylinder, slowly pure-acrylic emulsion, fluorine carbon emulsion, methacryloxypropyl trimethoxy silane is added under the rotating speed of 450-500 rev/min, disperse after 20-30 minute, improve rotating speed to 800 rev/min, add the mixed powder A of step (2), the PE Foam scrap stock of pulverizing and all the other remaining components successively, disperse after 30 minutes, raise speed to 1500 revs/min again, continue dispersion until fineness is less than 60 μm and get final product.