CN104650718A - Scraping-resistant waterproof external wall coating and preparation method thereof - Google Patents

Abstract

The invention discloses a scraping-resistant waterproof external wall coating. The scraping-resistant waterproof external wall coating is characterized by being prepared from the following raw materials in parts by weight: 20-45 parts of organic silicon rubber emulsion, 3-8 parts of an organosilicone waterproof agent, 2-7 parts of a graphene preformed dispersoid, 0.1-0.6 part of an emulsion type defoaming agent, 0.1-0.5 part of sodium carboxymethylcellulose, 2-3 parts of polyving akohol, 2-4 parts of sodium silicate, 2-3 parts of diglycerol polydiglycidyl ether, 2-4 parts of sodium nitrite, 6-9 parts of mica powder, 1-2 parts of a water reducer, 3-5 parts of white carbon black and 10-16 parts of coarse quartz sand. According to the scraping-resistant waterproof external wall coating, two functions of an elastic waterproof coating and a permeation waterproof layer are combined together; by adding graphene, ultra-long weather fastness and hydrophobicity are achieved; the scraping-resistant waterproof external wall coating is nontoxic, environmentally friendly and capable of resisting ageing and scraping, and a film is continuously coated and has no any seam; the scraping-resistant waterproof external wall coating is good in waterproof effect, applicable to internal and external walls, low in cost, good in decoration and worthy of being generalized.

Description

A kind of scrape resistant exterior wall waterproof paint and preparation method thereof

Technical field

The present invention relates to a kind of coating and preparation method thereof, particularly a kind of scrape resistant exterior wall waterproof paint and preparation method thereof.

Background technology

Graphene is a kind of carbon nanomaterial of novel individual layer sheet structure, there is high-specific surface area, good conduction, thermal conductivity, excellent chemical stability, outstanding mechanical property etc., it is made to be with a wide range of applications in coating, electroconductibility or salt spray resistance can not only be improved, coat-thickness can also be reduced further simultaneously, increase the sticking power to base material, promote the wear resistance of coating.The waterproofing membrane that waterproof paint is formed after solidification has certain extensibility, elastoplasticity, splitting resistance, impermeability and weathering resistance, can play waterproof, prevent blending provide protection.Waterproof paint has good thermal adaptability, easy and simple to handle, for ease of maintenaince with maintenance.But it is short for the waterproof paint effective storage life of external wall at present, one occur body of wall jaundice, not wear-resisting, cracking situation, effect is bad, the later stage need drop into human and material resources safeguard, waste time and energy, do not meet the aim of green that country advocates, energy-conservation, low-carbon (LC).

Summary of the invention

The object of this invention is to provide a kind of scrape resistant exterior wall waterproof paint and preparation method thereof.

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

A kind of scrape resistant exterior wall waterproof paint, 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 0.1-0.5, polyvinyl alcohol 2-3, water glass 2-4, Glycerol dimer polypropylene glycol ether 2-3, Sodium Nitrite 2-3, mica powder 6-9, water reducer 1-2, white carbon black 3-5, rubble sand 10-16;

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.

A kind of scrape resistant exterior wall waterproof paint 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, rubble sand, white carbon black and water reducer dispersed with stirring 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, the Graphene added realizes super weathering resistance of a specified duration and hydrophobic nature, waterproof paint asepsis environment-protecting of the present invention, ageing-resistant, scrape resistant, film are continuously without any seam, good water-proof effect, be applicable to inner-outer wall to use, cost is low, good decorative property, is worthy to be popularized.

specific embodiments

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

A kind of scrape resistant exterior wall waterproof paint, is made up of the raw material of following weight part (kilogram): the prefabricated dispersion 7 of organosilicon rubber emulsion 34, waterproofing agent of organosilicon 7, Graphene, emulsion type defoaming agent 0.3, Xylo-Mucine 0.5, polyvinyl alcohol 2, water glass 4, Glycerol dimer polypropylene glycol ether 3, Sodium Nitrite 2, mica powder 7, water reducer 1, white carbon black 4, rubble sand 16;

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.

A kind of scrape resistant exterior wall waterproof paint 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, rubble sand, white carbon black and water reducer dispersed with stirring 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. a scrape resistant exterior wall waterproof paint, 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 0.1-0.5, polyvinyl alcohol 2-3, water glass 2-4, Glycerol dimer polypropylene glycol ether 2-3, Sodium Nitrite 2-3, mica powder 6-9, water reducer 1-2, white carbon black 3-5, rubble sand 10-16;

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. a kind of scrape resistant exterior wall waterproof paint 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, rubble sand, white carbon black and water reducer dispersed with stirring 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.