CN104650717A - High-weather resistance low-discoloration-tendency waterproof paint and preparation method thereof - Google Patents

Abstract

The invention discloses a high-weather resistance low-discoloration-tendency waterproof paint. The invention is characterized in that the waterproof paint is prepared from the following raw materials in parts by weight: 20-45 parts of organic silicon rubber emulsion, 3-8 parts of organosilicon waterproofing agent, 2-7 parts of graphene pre-dispersion, 0.1-0.6 part of emulsion-type defoaming agent, 0.1-0.6 part of sodium carboxymethyl cellulose, 2-6 parts of propylene glycol monobutyl ether, 6-8 parts of lime powder, 1-2 parts of sorbitan fatty acid ester, 8-14 parts of mica powder, 2-3 parts of triethanolamine and 3-4 parts of sodium petroleum sulfonate. By combining the functions of the elastic waterproof coating and permeable waterproof layer, the waterproof paint can form a waterproof membrane, so the waterproof time is long; the added graphene implements super-durable weather resistance and hydrophobicity; and the paint has the advantages of favorable waterproof quality, high weather resistance, low powdering and discoloration tendency, low cost and favorable application prospects, and is convenient for construction.

Description

Not allochroic waterproof paint of a kind of weathering resistance height and preparation method thereof

Technical field

The present invention relates to a kind of coating and preparation method thereof, particularly not allochroic waterproof paint of a kind of weathering resistance height and preparation method thereof.

Background technology

Waterproof paint is at building field; apply very general; at present; use more cement based penetration crystallization type water proofing paint; because can only repair micro-cracks, and easily there is the phenomenon of mortar hollowing when waterproof construction does mortar cover in this kind of waterproof paint, affects the quality of buildings; therefore, the scope of its application is limited.Existing coating water-proof is poor, easy to leak, erasibility and weathering resistance are not strong, the demand of people can not be met, the present invention is directed to this situation adopts organosilicon rubber emulsion as filmogen, the Graphene added improves the perviousness of coating, preservative property, weathering resistance, the performance such as wear-resisting, coating asepsis environment-protecting of the present invention, green safety, easy construction, with low cost, as building coating, there is splendid weathering resistance, preservative property, water-repellancy and not easy to change, decorate properties is high, has wide range of applications.

Summary of the invention

The object of this invention is to provide not allochroic waterproof paint of a kind of weathering resistance height and preparation method thereof.

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

The not allochroic waterproof paint of a kind of weathering resistance height, is made up of the raw material of following weight part: organosilicon rubber emulsion 20-45, waterproofing agent of organosilicon 3-8, the prefabricated dispersion 2-7 of Graphene, emulsion type defoaming agent 0.1-0.6, Xylo-Mucine 0.1-0.6, propandiol butyl ether 2-6, lime powder 6-8, sorbitan-fatty acid ester 1-2, mica powder 8-14, trolamine 2-3, petroleum sodium sulfonate 3-4;

The prefabricated dispersion of described Graphene is made up of the raw material of following weight part: Graphite Powder 99 10-15, silane resin acceptor kh-550 1-2, dehydrated alcohol 20-40, hydrazine hydrate 2-4, DMF 5-8, distilled water 80-120, preparation method adopts Hummers method that Graphite Powder 99 is prepared into graphite oxide, graphite oxide is scattered in distilled water, ultrasonic vibration peels off 30-40 minute, after ultrasonic end under the rotating speed of 2500-2600 rev/min centrifugal 25-35 minute, get its supernatant liquor, slowly add the ethanolic soln of silane resin acceptor kh-550 while stirring, continue reaction 1-2 hour, add hydrazine hydrate reduction reaction 2-3 hour under 95-100 ° of C again, use dehydrated alcohol and distilled water wash products therefrom again, again by this product ultrasonic disperse in volume ratio be the N of 9:1, in the mixing solutions of dinethylformamide and distilled water, obtain the prefabricated dispersion of Graphene,

Described emulsion type defoaming agent is made up of the raw material of following weight part: IPBC 1-2, polysiloxane 10-15, sorbitan monooleate 0.2-0.4, polyoxyethylene 20 sorbitan monolaurate 0.3-0.4, deionized water 10-20, aniline triethyl Trimethoxy silane 1-2, polyvinyl ether 1-2, water drain silica 3-5, polyoxyethylene glycol 1-2, Red copper oxide 1-2, calcium ricinoleate 0.5-0.7; Preparation method is (1) by anilinomethyl triethoxysilane and water drain silica mixing, then adds polysiloxane reacting by heating 1-2 hour while stirring under 120-150 ° of C, is cooled to room temperature after reaction terminates; (2) sorbitan monooleate and polyoxyethylene 20 sorbitan monolaurate are mixed, be heated to 40-60 ° of C, be added in the product of step (1), all the other remaining compositions beyond deionizing water are added again after high-speed stirring 20-40 minute, control temperature at 70-80 ° of C, stirring at low speed; (3) by deionized water slowly, at the uniform velocity be added in step (2), Temperature fall while stirring, when temperature is down to room temperature, stop stir, by gained material colloidal mill grinding can obtain emulsion type defoaming agent 2-3 time.

The not allochroic waterproof paint of a kind of weathering resistance height of the present invention, be made up of following concrete steps:

(1) organosilicon rubber emulsion is added in reactor, opens machine and stir with the rotating speed of 500 revs/min, add waterproofing agent of organosilicon, dispersion 5-6 minute, then add the prefabricated dispersion of Graphene, continue to stir 5-7 minute;

(2) emulsion type defoaming agent of 50-60% weight part in formula is added in step (1), dispersed with stirring 5-7 minute, add Xylo-Mucine dispersion again and can't see particle to dissolving completely in 8-10 minute, now improve rotating speed to 800 rev/min, then add mica powder and lime powder and stirring dispersion 15-20 minute;

(3) emulsion type defoaming agent of residual content in formula is added in step (2), then adds all the other remaining composition dispersion 5-10 minute, then filter through colloidal mill speed lapping and obtain product.

Advantage of the present invention is: elastic water-proof coating and impenetrable waterproof layer two kinds of functions combine by waterproof paint of the present invention, one deck water-separating film can be formed at surface of wall, water-proofing time is long, the Graphene added realizes super weathering resistance of a specified duration and hydrophobic nature, coating of the present invention, and water resistance is good, the not easily efflorescence of weathering resistance height, variable color, and easy construction simultaneously, cost is low, and application prospect is good.

specific embodiments

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

The not allochroic waterproof paint of a kind of weathering resistance height, is made up of the raw material of following weight part (kilogram): the prefabricated dispersion 3 of organosilicon rubber emulsion 40, waterproofing agent of organosilicon 6, Graphene, emulsion type defoaming agent 0.5, Xylo-Mucine 0. 6, propandiol butyl ether 5, lime powder 7, sorbitan-fatty acid ester 1, mica powder 12, trolamine 2, petroleum sodium sulfonate 3;

The prefabricated dispersion of described Graphene is made up of the raw material of following weight part (kilogram): Graphite Powder 99 10, silane resin acceptor kh-550 2, dehydrated alcohol 40, hydrazine hydrate 2, DMF 7, distilled water 120, preparation method adopts Hummers method that Graphite Powder 99 is prepared into graphite oxide, graphite oxide is scattered in distilled water, ultrasonic vibration peels off 30-40 minute, after ultrasonic end under the rotating speed of 2500-2600 rev/min centrifugal 25-35 minute, get its supernatant liquor, slowly add the ethanolic soln of silane resin acceptor kh-550 while stirring, continue reaction 1-2 hour, add hydrazine hydrate reduction reaction 2-3 hour under 95-100 ° of C again, use dehydrated alcohol and distilled water wash products therefrom again, again by this product ultrasonic disperse in volume ratio be the N of 9:1, in the mixing solutions of dinethylformamide and distilled water, obtain the prefabricated dispersion of Graphene,

Described emulsion type defoaming agent is made up of the raw material of following weight part (kilogram): IPBC 1, polysiloxane 12, sorbitan monooleate 0.3, polyoxyethylene 20 sorbitan monolaurate 0.3, deionized water 16, aniline triethyl Trimethoxy silane 1, polyvinyl ether 2, water drain silica 4, polyoxyethylene glycol 1, Red copper oxide 2, calcium ricinoleate 0.6; Preparation method is (1) by anilinomethyl triethoxysilane and water drain silica mixing, then adds polysiloxane reacting by heating 1-2 hour while stirring under 120-150 ° of C, is cooled to room temperature after reaction terminates; (2) sorbitan monooleate and polyoxyethylene 20 sorbitan monolaurate are mixed, be heated to 40-60 ° of C, be added in the product of step (1), all the other remaining compositions beyond deionizing water are added again after high-speed stirring 20-40 minute, control temperature at 70-80 ° of C, stirring at low speed; (3) by deionized water slowly, at the uniform velocity be added in step (2), Temperature fall while stirring, when temperature is down to room temperature, stop stir, by gained material colloidal mill grinding can obtain emulsion type defoaming agent 2-3 time.

The not allochroic waterproof paint of a kind of weathering resistance height of the present invention, be made up of following concrete steps:

(1) organosilicon rubber emulsion is added in reactor, opens machine and stir with the rotating speed of 500 revs/min, add waterproofing agent of organosilicon, dispersion 5-6 minute, then add the prefabricated dispersion of Graphene, continue to stir 5-7 minute;

(2) emulsion type defoaming agent of 50-60% weight part in formula is added in step (1), dispersed with stirring 5-7 minute, add Xylo-Mucine dispersion again and can't see particle to dissolving completely in 8-10 minute, now improve rotating speed to 800 rev/min, then add mica powder and lime powder and stirring dispersion 15-20 minute;

(3) emulsion type defoaming agent of residual content in formula is added in step (2), then adds all the other remaining composition dispersion 5-10 minute, then filter through colloidal mill speed lapping and obtain product.

Through detecting, the waterproof paint of above-described embodiment gained has following characteristic:

Alkali resistance experiment (saturated calcium hydroxide and 0.1% sodium hydroxide mixing solutions, 15 ° of C soak 15 days): do not play drum, do not come off;

Thermotolerance experiment (100 ± 1 DEG C, 6 hours): do not play drum, do not trickle, do not come off;

Heating expansion and contraction (%): extend≤1, shortens≤1;

Watertightness (0.5 MPa, 30min): waterproof;

Tensile strength > 1.5MPa;

Elongation at break > 300%;

Low temperature flexibility (around Φ 10mm rod) :-20 ° of C flawlesses;

Stretching strength retentivity (%) after burin-in process:

Heat treated > 100;

UV treatment > 100;

The alkaline purification sodium hydroxide mixing solutions of 0.1% (the saturated calcium hydroxide and) > 100;

Acid treatment (20% H ₂sO ₄soak) > 100.

Claims (2)

1. the not allochroic waterproof paint of weathering resistance height, it is characterized in that, be made up of the raw material of following weight part: organosilicon rubber emulsion 20-45, waterproofing agent of organosilicon 3-8, the prefabricated dispersion 2-7 of Graphene, emulsion type defoaming agent 0.1-0.6, Xylo-Mucine 0.1-0.6, propandiol butyl ether 2-6, lime powder 6-8, sorbitan-fatty acid ester 1-2, mica powder 8-14, trolamine 2-3, petroleum sodium sulfonate 3-4;

The prefabricated dispersion of described Graphene is made up of the raw material of following weight part: Graphite Powder 99 10-15, silane resin acceptor kh-550 1-2, dehydrated alcohol 20-40, hydrazine hydrate 2-4, DMF 5-8, distilled water 80-120, preparation method adopts Hummers method that Graphite Powder 99 is prepared into graphite oxide, graphite oxide is scattered in distilled water, ultrasonic vibration peels off 30-40 minute, after ultrasonic end under the rotating speed of 2500-2600 rev/min centrifugal 25-35 minute, get its supernatant liquor, slowly add the ethanolic soln of silane resin acceptor kh-550 while stirring, continue reaction 1-2 hour, add hydrazine hydrate reduction reaction 2-3 hour under 95-100 ° of C again, use dehydrated alcohol and distilled water wash products therefrom again, again by this product ultrasonic disperse in volume ratio be the N of 9:1, in the mixing solutions of dinethylformamide and distilled water, obtain the prefabricated dispersion of Graphene,

Described emulsion type defoaming agent is made up of the raw material of following weight part: IPBC 1-2, polysiloxane 10-15, sorbitan monooleate 0.2-0.4, polyoxyethylene 20 sorbitan monolaurate 0.3-0.4, deionized water 10-20, aniline triethyl Trimethoxy silane 1-2, polyvinyl ether 1-2, water drain silica 3-5, polyoxyethylene glycol 1-2, Red copper oxide 1-2, calcium ricinoleate 0.5-0.7; Preparation method is (1) by anilinomethyl triethoxysilane and water drain silica mixing, then adds polysiloxane reacting by heating 1-2 hour while stirring under 120-150 ° of C, is cooled to room temperature after reaction terminates; (2) sorbitan monooleate and polyoxyethylene 20 sorbitan monolaurate are mixed, be heated to 40-60 ° of C, be added in the product of step (1), all the other remaining compositions beyond deionizing water are added again after high-speed stirring 20-40 minute, control temperature at 70-80 ° of C, stirring at low speed; (3) by deionized water slowly, at the uniform velocity be added in step (2), Temperature fall while stirring, when temperature is down to room temperature, stop stir, by gained material colloidal mill grinding can obtain emulsion type defoaming agent 2-3 time.

2. the not allochroic waterproof paint of a kind of weathering resistance height according to claim 1, is characterized in that, be made up of following concrete steps:

(1) organosilicon rubber emulsion is added in reactor, opens machine and stir with the rotating speed of 500 revs/min, add waterproofing agent of organosilicon, dispersion 5-6 minute, then add the prefabricated dispersion of Graphene, continue to stir 5-7 minute;

(2) emulsion type defoaming agent of 50-60% weight part in formula is added in step (1), dispersed with stirring 5-7 minute, add Xylo-Mucine dispersion again and can't see particle to dissolving completely in 8-10 minute, now improve rotating speed to 800 rev/min, then add mica powder and lime powder and stirring dispersion 15-20 minute;

(3) emulsion type defoaming agent of residual content in formula is added in step (2), then adds all the other remaining composition dispersion 5-10 minute, then filter through colloidal mill speed lapping and obtain product.