CN103351673A - Antifouling scale-inhibiting anti-aging exterior wall coating and preparation method thereof - Google Patents

Abstract

The invention provides an exterior wall coating which is composed of the following raw materials in parts by weight: 84-90 parts of water-based acrylic emulsion, 10-15 parts of styrene-acrylic emulsion, 16-50 parts of hydrotalcite powder, 4-6 parts of nano silicon dioxide, 0.1-0.2 part of triallyl isocyanurate, 3-4 parts of acrylic acid, 1-2 parts of aluminium nitride, 1-2 parts of dimethylethanolamine, 0.7-1 part of ureidopropyltriethoxysilane, 1-2 parts of sodium tripolyphosphate, 1-2 parts of polyvinylpyrrolidone, 1-2 parts of para toluene sulfonamide, 1-2 parts of ammonium dihydrogen phosphate, 0.4-0.6 part of triphenyl phosphite, 2-3 parts of absolute ethyl alcohol, 3-5 parts of coalescing agent, 0.1-0.2 part of polyoxypropylene glycerol ether and 10-20 parts of deionized water. The coating provided by the invention has the advantages of low raw material loss, low gel production, simple process, hard coating film, good glossiness, strong impact resistance, low cracking rate, soft texture, excellent decorative property, high weather resistance, scrubbing resistance, high adhesion force and long service life; and the coating is free of special smell and contains no heavy metals such as mercury and lead and also does not contain formaldehyde volatile, and thus the coating meets the technical requirements of an environment-friendly coating.

Description

Ageing-resistant exterior coating of a kind of antifouling scale inhibition and preparation method thereof

Technical field

The present invention relates generally to a kind of coating, relates in particular to ageing-resistant exterior coating of a kind of antifouling scale inhibition and preparation method thereof.

Background technology

In recent years; along with the raising of living standards of the people and the development of society; people are to the selection pay attention to day by day of building decoration coating, and are more simple better to the construction requirement of coating, for particularly in exterior coating; not only rest in the most basic protection to ground; decorative effect to coating is had higher requirement, and exterior coating requires to have water repelling property, requires to have from washing property; it is hard and smooth, dirty once rushing that paint film is wanted.

But the acrylic coating of throwing on the domestic market exists, and gloss is low, poor adhesive force, winter hardiness are poor, not water-fast, water vapour, soda acid, salts solution and organic polar solvent, poor flexibility under the room temperature, the shortcoming such as wear no resistance, and high temperature easily returns sticking, fragile under low temperature splitting, cause coating to ftracture easily, peel off, rainwater etc. infiltrate metope, corrosion body of wall easily, and this not only affects the beautiful decoration of buildings, and will reduce the work-ing life of buildings.

Summary of the invention

The object of the invention is exactly in order to remedy the defective of prior art, exterior coating that a kind of paint film is stable, glossiness is good, tolerance is strong and preparation method thereof to be provided.

The present invention is achieved by the following technical solutions:

The ageing-resistant exterior coating of a kind of antifouling scale inhibition, it is comprised of the raw material of following weight parts:

Aqueous acrylic emulsion 84-90, benzene emulsion 10-15, neatly stone flour 16-50, nano silicon 4-6, cyanacrylate 0.1-0.2, vinylformic acid 3-4, aluminium nitride 1-2, dimethylethanolamine 1-2, urea groups propyl-triethoxysilicane 0.7-1, tripoly phosphate sodium STPP 1-2, polyvinylpyrrolidone 1-2, para toluene sulfonamide 1-2, phosphoric acid dihydro amine 1-2, triphenyl phosphite 0.4-0.6, dehydrated alcohol 2-3, film coalescence aid 3-5, polypropylene glycerol aether 0.1-0.2, deionized water 10-20;

Described film coalescence aid is comprised of the raw material of following weight parts:

Nano silicon 30-40, polyvinyl alcohol 4-6, vinyltriethoxysilane 6-10, alkylphenol Polyoxyalkylene ethers 0.8-1, benzene emulsion 3-4, nano-sized carbon 1-2;

Polyvinyl alcohol is joined in the 4-5 times of water, be steam heated to 95-100 ℃, stirring and dissolving adds benzene emulsion, and reducing temperature is 60-70 ℃, constant temperature stirred 3-4 minute, add each raw material of residue, low speed 300-400 rev/min was disperseed 2-3 minute, and 100-120 ℃ of insulation left standstill 1-2 hour, be cooled to normal temperature, namely get described film coalescence aid.

The preparation method of the ageing-resistant exterior coating of a kind of antifouling scale inhibition may further comprise the steps:

The triphenyl phosphite of above-mentioned weight part is joined in the dehydrated alcohol, and stirring and dissolving adds nano silicon, vinylformic acid, the rising temperature fully stirs to 75-80 ℃, adds para toluene sulfonamide, tripoly phosphate sodium STPP, low speed 300-400 rev/min was disperseed 4-6 minute, add benzene emulsion, stir, the rising temperature is to 90-100 ℃, add cyanacrylate, insulation reaction 40-50 minute, add aqueous acrylic emulsion, deionized water, 900-1000 rev/min was stirred 8-10 minute; Add again the neatly stone flour, stirred 15-20 minute at 700-800 rev/min; Add each raw material of residue, under 600-700 rev/min speed, fully stir, add acetic acid or sodium acetate, adjusting PH is 8-9, stirs to be described exterior coating.

Advantage of the present invention is:

The coating raw material loss that the present invention produces is few, gel generates few, technique is simple, paint film is hard, glossiness is good, anti-impact force is strong, be not easy cracking, texture is soft, ornamental strong, high weather resisteant is arranged, brushing resistance, strong adhesion, long service life, without special odor, not mercurous, the plumbous heavy metal that waits, formaldehydeless volatile matter, meet the technical requirements of environmental protection coating material, the film coalescence aid of adding has very high stability, efficient binding property, film-forming properties has increased the density of coated membrane, improved quality of forming film, so that rete has strong adhesion, without the cavity, split sunken, the fine and close advantage such as even.

Embodiment

Embodiment 1

The ageing-resistant exterior coating of a kind of antifouling scale inhibition, it is comprised of the raw material of following weight parts (kilogram):

Aqueous acrylic emulsion 90, benzene emulsion 15, neatly stone flour 50, nano silicon 6, cyanacrylate 0.2, vinylformic acid 3-4, aluminium nitride 1, dimethylethanolamine 2, urea groups propyl-triethoxysilicane 0.7, tripoly phosphate sodium STPP 2, polyvinylpyrrolidone 2, para toluene sulfonamide 2, phosphoric acid dihydro amine 2, triphenyl phosphite 0.6, dehydrated alcohol 3, film coalescence aid 3, polypropylene glycerol aether 0.2, deionized water 20;

Described film coalescence aid is comprised of the raw material of following weight parts:

Nano silicon 40, polyvinyl alcohol 4, vinyltriethoxysilane 10, alkylphenol Polyoxyalkylene ethers 0.8, benzene emulsion 3, nano-sized carbon 2;

Polyvinyl alcohol is joined in 5 times of water, be steam heated to 100 ℃, stirring and dissolving adds benzene emulsion, reducing temperature is 70 ℃, and constant temperature stirred 4 minutes, adds each raw material of residue, 400 rev/mins of dispersions of low speed 2 minutes, 120 ℃ of insulations were left standstill 1 hour, were cooled to normal temperature, namely got described film coalescence aid.

The preparation method of the ageing-resistant exterior coating of a kind of antifouling scale inhibition may further comprise the steps:

The triphenyl phosphite of above-mentioned weight part is joined in the dehydrated alcohol, and stirring and dissolving adds nano silicon, vinylformic acid, rising temperature to 80 ℃ fully stirs, and adds para toluene sulfonamide, tripoly phosphate sodium STPP, 300 rev/mins of dispersions of low speed 4 minutes, add benzene emulsion, stir, rising temperature to 100 ℃, add cyanacrylate, insulation reaction 50 minutes adds aqueous acrylic emulsion, deionized water, and 1000 rev/mins were stirred 10 minutes; Add again the neatly stone flour, stirred 20 minutes at 800 rev/mins; Add each raw material of residue, under 700 rev/mins speed, fully stir, add acetic acid or sodium acetate, regulating PH is 9, and stirring is described exterior coating.

Performance test:

Paint film appearance is full, smooth, good without lump, glossiness;

Corrosion resistance test: pass through for 10000 times, paint film is without breakage;

The artificial ageing resistance test: 2000 hours non-foaming, do not peel off, flawless;

Temperature-change resistance (5 circulations): without unusual;

Alkali resistance: 200 hours without unusual.

Claims (2)

1. ageing-resistant exterior coating of antifouling scale inhibition is characterized in that what it was comprised of the raw material of following weight parts:

Aqueous acrylic emulsion 84-90, benzene emulsion 10-15, neatly stone flour 16-50, nano silicon 4-6, cyanacrylate 0.1-0.2, vinylformic acid 3-4, aluminium nitride 1-2, dimethylethanolamine 1-2, urea groups propyl-triethoxysilicane 0.7-1, tripoly phosphate sodium STPP 1-2, polyvinylpyrrolidone 1-2, para toluene sulfonamide 1-2, phosphoric acid dihydro amine 1-2, triphenyl phosphite 0.4-0.6, dehydrated alcohol 2-3, film coalescence aid 3-5, polypropylene glycerol aether 0.1-0.2, deionized water 10-20;

Described film coalescence aid is comprised of the raw material of following weight parts:

Nano silicon 30-40, polyvinyl alcohol 4-6, vinyltriethoxysilane 6-10, alkylphenol Polyoxyalkylene ethers 0.8-1, benzene emulsion 3-4, nano-sized carbon 1-2;

Polyvinyl alcohol is joined in the 4-5 times of water, be steam heated to 95-100 ℃, stirring and dissolving adds benzene emulsion, and reducing temperature is 60-70 ℃, constant temperature stirred 3-4 minute, add each raw material of residue, low speed 300-400 rev/min was disperseed 2-3 minute, and 100-120 ℃ of insulation left standstill 1-2 hour, be cooled to normal temperature, namely get described film coalescence aid.

2. the preparation method of the ageing-resistant exterior coating of antifouling scale inhibition as claimed in claim 1 is characterized in that may further comprise the steps:

The triphenyl phosphite of above-mentioned weight part is joined in the dehydrated alcohol, and stirring and dissolving adds nano silicon, vinylformic acid, the rising temperature fully stirs to 75-80 ℃, adds para toluene sulfonamide, tripoly phosphate sodium STPP, low speed 300-400 rev/min was disperseed 4-6 minute, add benzene emulsion, stir, the rising temperature is to 90-100 ℃, add cyanacrylate, insulation reaction 40-50 minute, add aqueous acrylic emulsion, deionized water, 900-1000 rev/min was stirred 8-10 minute; Add again the neatly stone flour, stirred 15-20 minute at 700-800 rev/min; Add each raw material of residue, under 600-700 rev/min speed, fully stir, add acetic acid or sodium acetate, adjusting PH is 8-9, stirs to be described exterior coating.