CN103980778A - High solid content exterior wall coating - Google Patents

Abstract

The invention discloses a high solid content exterior wall coating. The high solid content exterior wall coating is prepared form following raw materials, by weight, 65 to 70 parts of aqueous acrylic emulsion, 5 to 10 parts of kaolin, 5 to 10 parts of fly ash, 3 to 5 parts of zinc oxide, 4 to 5 parts of titanium dioxide, 1 to 2 parts of 4, 4'-oxybis(benzenesulfonyl hydrazide), 2 to 3 parts of anhydrous calcium chloride, 1 to 2 parts of hydrated zinc borate, 2 to 3 parts of polypropylene adipate, 1 to 2 parts of N-[3-(trimethoxysilyl)propyl]aniline, 1 to 3 parts of sodium monoflurophosphate, 0.1 to 0.2 part of dimethicone, 2 to 3 parts of an auxiliary agent, and an appropriate amount of water. The high solid content exterior wall coating possesses high weather resistance, washing resistance, high adhesive force, and excellent cover effects; is long in service life, and low in viscosity; is convenient for construction; can be used for direct construction in exterior wall construction processes; and is capable of reducing construction time and construction cost effectively.

Description

A kind of exterior coating of high solids content

Technical field

The present invention relates generally to a kind of coating, relates in particular to a kind of exterior coating of high solids content.

Background technology

Along with the raising of living standards of the people and the development of society; the selection of people's External Wall coating; not only rest on the most substantially in the protection of ground, more require the construction of coating succinctly convenient simultaneously, require color to keep the lasting high-decoration requirement that waits simultaneously.At present, the exterior coating that China adopts mainly be take ACRYLIC EMULSION as base-material.Water soluble acrylic acid coating has that cost is moderate, weathering resistance is good, adjustable is good, and the advantages such as organic solvent-free release, are development in recent years class coating products very rapidly.

Summary of the invention

The object of the invention is just to provide a kind of exterior coating of high solids content.

The present invention is achieved by the following technical solutions:

An exterior coating for high solids content, it is comprised of the raw material of following weight parts:

Aqueous acrylic emulsion 65-70, kaolin 5-10, flyash 5-10, zinc oxide 3-5, titanium dioxide 4-5,4,4 '-OBSH 1-2, Calcium Chloride Powder Anhydrous 2-3, hydration zinc borate 1-2, hexanodioic acid propanediol polyester 2-3, N-phenyl-3-TSL 8330 1-2, sodium monoflurophosphate 1-3, dimethyl silicone oil 0.1-0.2, auxiliary agent 2-3, water are appropriate;

Described auxiliary agent is comprised of the raw material of following weight parts: PET resin 10-20, polyamide wax micropowder 3-5, butyl polyacrylate 2-3, peroxidation tert-butyl acetate 0.3-0.4, polyoxyethylene nonylphenol ether NP-40.1-0.2; Polyoxyethylene nonylphenol ether NP-4 steam heating, to 60-70 ℃, is added to butyl polyacrylate, and insulation reaction 10-15 minute, adds PET resin, and normal temperature 100-200 rev/min of dispersed with stirring 2-4 minute adds each raw material of residue, stirs.

A preparation method for exterior coating, comprises the following steps:

Above-mentioned kaolin, flyash are mixed, 1000-1200 ℃ of calcining 10-20 minute, discharging is cooled to normal temperature, mixes with zinc oxide, titanium dioxide, hexanodioic acid propanediol polyester, low speed 200-300 rev/min is stirred 20-30 minute, add N-phenyl-3-TSL 8330, after fully stirring, add again each raw material of residue, 600-700 rev/min of dispersed with stirring 1-2 hour, 80-90 ℃ of insulation 3-5 minute, be cooled to normal temperature, adjusting PH is 7-8, obtains described coating.

Advantage of the present invention is:

Exterior coating of the present invention has high weather resisteant, brushing resistance, strong adhesion, long service life, and low viscosity, easily construction can directly be constructed when external wall construction, have very high opacifying power effect, thereby can effectively save engineering time and construction cost.

Embodiment

Embodiment 1

An exterior coating for high solids content, it is comprised of the raw material of following weight parts:

Aqueous acrylic emulsion 70, kaolin 10, flyash 10, zinc oxide 3-5, titanium dioxide 4,4,4 '-OBSH 2, Calcium Chloride Powder Anhydrous 2, hydration zinc borate 2, hexanodioic acid propanediol polyester 3, N-phenyl-3-TSL 8330 2, sodium monoflurophosphate 3, dimethyl silicone oil 0.2, auxiliary agent 2-3, water are appropriate;

Described auxiliary agent is comprised of the raw material of following weight parts: PET resin 20, polyamide wax micropowder 3, butyl polyacrylate 3, peroxidation tert-butyl acetate 0.4, polyoxyethylene nonylphenol ether NP-40.2; By polyoxyethylene nonylphenol ether NP-4 steam heating to 70 ℃, add butyl polyacrylate, insulation reaction 15 minutes, adds PET resin, and 200 revs/min of dispersed with stirring of normal temperature 2 minutes add each raw material of residue, stir.

A preparation method for exterior coating, comprises the following steps:

Above-mentioned kaolin, flyash are mixed, 1200 ℃ of calcining 10-20 minute, discharging is cooled to normal temperature, mixes with zinc oxide, titanium dioxide, hexanodioic acid propanediol polyester, low speed 200-300 rev/min is stirred 30 minutes, add N-phenyl-3-TSL 8330, after fully stirring, add again each raw material of residue, 700 revs/min of dispersed with stirring 2 hours, 90 ℃ are incubated 5 minutes, be cooled to normal temperature, regulating PH is 8, obtains described coating.

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

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

Alkali resistance: 200 hours without abnormal;

Water tolerance: 100 hours without abnormal;

Contamination resistance :≤5%;

Time of drying: < 1.5 hours.

Claims (2)

1. an exterior coating for high solids content, is characterized in that what it was comprised of the raw material of following weight parts:

Aqueous acrylic emulsion 65-70, kaolin 5-10, flyash 5-10, zinc oxide 3-5, titanium dioxide 4-5,4,4 '-OBSH 1-2, Calcium Chloride Powder Anhydrous 2-3, hydration zinc borate 1-2, hexanodioic acid propanediol polyester 2-3, N-phenyl-3-TSL 8330 1-2, sodium monoflurophosphate 1-3, dimethyl silicone oil 0.1-0.2, auxiliary agent 2-3, water are appropriate;

Described auxiliary agent is comprised of the raw material of following weight parts: PET resin 10-20, polyamide wax micropowder 3-5, butyl polyacrylate 2-3, peroxidation tert-butyl acetate 0.3-0.4, polyoxyethylene nonylphenol ether NP-40.1-0.2; Polyoxyethylene nonylphenol ether NP-4 steam heating, to 60-70 ℃, is added to butyl polyacrylate, and insulation reaction 10-15 minute, adds PET resin, and normal temperature 100-200 rev/min of dispersed with stirring 2-4 minute adds each raw material of residue, stirs.

2. a preparation method for exterior coating as claimed in claim 1, is characterized in that comprising the following steps:

Above-mentioned kaolin, flyash are mixed, 1000-1200 ℃ of calcining 10-20 minute, discharging is cooled to normal temperature, mixes with zinc oxide, titanium dioxide, hexanodioic acid propanediol polyester, low speed 200-300 rev/min is stirred 20-30 minute, add N-phenyl-3-TSL 8330, after fully stirring, add again each raw material of residue, 600-700 rev/min of dispersed with stirring 1-2 hour, 80-90 ℃ of insulation 3-5 minute, be cooled to normal temperature, adjusting PH is 7-8, obtains described coating.