CN101117483A - Aqueous fluorine-carbon paint and method for making same - Google Patents

Abstract

The invention discloses a waterborne fluorocarbon coating, which comprises the following substances: 0.1 to 0.3 percent of cellulose; 0.3 to 0.6 percent of dispersant; 0.1to 0.5 percent of wetting agent; 0.1 to 0.3 percent of multi-functional additive; 0.1 to 0.3 percent of defoamer; 0.1 to 0.2 percent of preservative; 0.2 to 0.6 percent of antimildew agent; 1.0 to 4.0 percent of antifreeze; 1.0 to 3.0 percent of film forming additive; 0.3 to 0.6 percent of levelling agent; 0.3 to 0.6 percent of PU thickener; 16 to 25 percent of rutile titanium dioxide; 35 to 50 percent of waterborne fluorocarbon emulsion; the left is solvent deionized water, and the percentage is percentage by weight. The invention has advantages of environment protection, high weatherability, strong anti-contamination and anti-aging performance.

Description

Aqueous fluorine-carbon paint and preparation method thereof

Technical field

The present invention relates to coating, be specifically related to a kind of aqueous fluorine-carbon paint that is used for outer surface of wall and preparation method thereof.

Background technology

Decorative material for wall surface rises buildings and decorates and provide protection, improves the weather resistance of buildings, prolongs its work-ing life.Because the fast development of construction industry and the raising of people's living standard, China's Modern Decorative material have also obtained development rapidly.Domestic and international application mainly contains decorative stone, glass curtain wall, exposed wall facing brick, various decorative board, building coating etc. in the material of decoration of exterior wall at present, the comprehensive characteristics and the development trend of external wall decorative material both at home and abroad, China's exterior wall finish material should be with the high performance outer wall paint of environmental protection as main developing direction, in the high performance exterior coating, should first-selected fluorine carbon lacquer.Concern and favor that fluorine carbon lacquer is subjected to decorating the boundary with its distinctive weathering resistance, anti-contamination, anti-solvent, acid and alkali-resistance, characteristic such as hydrophobic.Present fluorine carbon lacquer mainly is based on solvent-borne type, and because solvent-borne type fluorine carbon lacquer contains higher VOC, solvent directly volatilizees and can't reclaim in air during construction, cause the wasting of resources, contaminate environment also has certain murder by poisoning to the workmen, and service tool is difficult to clean up.In addition, the paint film densification of solvent-borne type fluorine carbon lacquer, ventilation property is poor, forms local bubble easily.And on the other hand, the weathering resistance of emulsion paint of the prior art, anti-staining property and ageing resistance can not satisfy the needs of use again.

Summary of the invention

The objective of the invention is to overcome above-mentioned defective of the prior art, the aqueous fluorine-carbon paint that a kind of environmental protection is provided and has higher weathering resistance, anti-staining property and ageing resistance.

Aqueous fluorine-carbon paint of the present invention comprises following material:

Mierocrystalline cellulose 0.1-0.3%

Dispersion agent 0.3-0.6%

Wetting agent 0.1-0.5%

Multifunctional assistant 0.1-0.3%

Defoamer 0.1-0.3%

Sanitas 0.1-0.2%

Mould inhibitor 0.2-0.6%

Frostproofer 1.0-4.0%

Film coalescence aid 1.0-3.0%

Flow agent 0.3-0.6%

PU thickening material 0.3-0.6%

Rutile type 16-25%

Water-base fluorocarbon emulsion 35-50%

All the other are solvent deionized water, and described per-cent is weight percentage.

Described Mierocrystalline cellulose is the 250HBR of Aqualon company.

Described dispersion agent is the 716W of German Degussa company.

Described wetting agent is the Triton X-405 of DOW Chemical.

Described multifunctional assistant is the AMP-95 of LG-DOW.

Described defoamer is the BYK-028 of German Bi Ke chemical company, or the NopcoNXZ of German Kening Co.,Ltd.

Described sanitas is Kathon LXE.

Described frostproofer, composition are 1, the 2-propylene glycol.

Described flow agent is the RM2020 and the RM-8W of ROHM AND HAAS, or NHS300 and NLS200, or other polyurethane thickeners.

The preparation method of aqueous fluorine-carbon paint may further comprise the steps:

(a), part deionized water, Mierocrystalline cellulose, dispersion agent, wetting agent, multifunctional assistant, half defoamer, sanitas, mould inhibitor, frostproofer, film coalescence aid, flow agent, PU thickening material are added in the container, stirred 10 minutes;

(b), again add rutile type, with the inwall of part washed with de-ionized water container, then high speed dispersion 20-30 minute qualified to fineness;

(c), under stirring at low speed, add water-base fluorocarbon emulsion again, add proper amount of deionized water and half remaining defoamer after stirring again, continue stir about and can finish in 20 minutes.

The present invention has following advantage:

1, superpower washability, the waterproof self-cleaning function is strong;

2, superpower ageing-resistant, uvioresistant, weathering resistance keep metope lasting as new;

3, rich color, health environment-friendly, not easy to change;

4, superpower contamination resistance, acid and alkali-resistance, corrosion-resistant, temp. variation resistant performance, chemical-resistant.

5, good sticking power, high ventilation function, all-round protection wall;

6, have mildew-resistant, anti-algae function, prolong the work-ing life of paint film;

7, construction technology is simple, can spraying, roller coat, brushing;

8, be easy to repeat cover with paint, lacquer, colour wash, etc. and repair;

9, high-decoration, and salt fog resistance and ageing-resistant performance excellence;

10, paint film mechanical property excellence, pollution resistance is good, is easy to clean.

Embodiment

The preparation method of embodiment 1:

(a), in one liter of container, part deionized water, Mierocrystalline cellulose, dispersion agent, wetting agent, multifunctional assistant, half defoamer, sanitas, mould inhibitor, frostproofer, film coalescence aid, flow agent, PU thickening material are added in the container, stirred 10 minutes;

(b), again add rutile type, with the inwall of part washed with de-ionized water container, then high speed dispersion 20-30 minute qualified to fineness;

(c), under stirring at low speed, add water-base fluorocarbon emulsion again, add proper amount of deionized water and half remaining defoamer after stirring again, continue stir about and can finish in 20 minutes.

The preparation method of embodiment 2-4 is with embodiment 1.

Table 1 embodiment 1～4 proportioning raw materials wt/wt

Material name	Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4
					Mierocrystalline cellulose	0.1	0.2	0.2	0.2
Dispersion agent	0.3	0.4	0.5	0.5
					Wetting agent	0.1	0.1	0.2	0.2
Multifunctional assistant	0.1	0.2	0.2	0.2
					Defoamer	0.2	0.3	0.3	0.3
Sanitas	0.1	0.2	0.2	0.2
					Mould inhibitor	0.2	0.3	0.4	0.4
Propylene glycol	1.0	1.2	1.2	1.2
					Film coalescence aid	1.0	1.2	1.5	1.8
Flow agent	0.3	0.4	0.4	0.4
					The PU thickening material	0.3	0.3	0.3	0.3
Rutile type	16	20	22	25
					Deionized water	In right amount	In right amount	In right amount	In right amount
Water-base fluorocarbon emulsion	35	40	45	50

Table 2 paint film property test data

Test event	Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4
					60 ° of gloss mill bases of initial viscosity consistency water tolerance alkali resistance coating temp. variation resistant brush application contamination resistance package stability	100KU 21% has loose colour no abnormal no abnormal good 15% general	103KU 12% has loose colour no abnormal no abnormal good 12% good	106KU 17% no loose colour no abnormal no abnormal good 10% is good	106KU 26% no loose colour no abnormal no abnormal good 7% is good

Table 3 aqueous fluorine-carbon paint censorship of the present invention result

Test item	Standard (premium grads)	Detected result
			State application property low-temperature stability time of drying (surface drying) h≤appearance of film contrast ratio in the container (white or light color) water tolerance alkali resistance abrasion resistance/time 〉=artificial ageing resistance efflorescence/level≤variable color/level≤contamination resistance % coating temp. variation resistant (5 circulations)	Be after no lump stirs uniform state brush accessible no abnormal 2000 600h of the no abnormal 48h of 2 normal 0.93 96h that never degenerate in two roads non-foaming, do not peel off, flawless 12 15 is no abnormal	Being uniform state after no lump stirs brushes that two roads are accessible to never degenerate≤and the no abnormal 48h of 2 normal 0.98 96h is no abnormal＞and 2000 1200h are non-foaming, do not peel off, flawless 129 is no abnormal

Table 4 styrene-acrylic latex coating, pure third emulsion paint, silicon third emulsion paint, solvent-type double-component fluorine carbon lacquer and aqueous fluorine-carbon paint performance comparison of the present invention

Project	Aqueous fluorine-carbon paint	Solvent-borne type fluorine carbon lacquer	Silicon third emulsion paint	Pure third emulsion paint	Styrene-acrylic latex coating
						Δ E ultraviolet resistance gloss retention contamination resistance water tolerance alkali resistance coating temp. variation resistant	4 85% 7% is no abnormal no abnormal	3.5 90% 6% no abnormal no abnormal	5.5 70% 15% no abnormal no abnormal	6.5 70% 18% no abnormal no abnormal	8.5 60% 16% no abnormal no abnormal

By above test as can be seen, aqueous fluorine-carbon paint of the present invention has excellent performance, be applied on the metope and have better weather resistance and anti-stain characteristic and ageing-resistant performance than general emulsion paint, and compare with solvent-borne type fluorine carbon lacquer, in the paint film property that keeps solvent-borne type fluorine carbon lacquer, significantly reduced the content of VOC again.Therefore, the paint film property of aqueous fluorine-carbon paint and environmental-protecting performance can satisfy the requirement of modern wall decoration finishing comprehensively.

Claims (10)

1. an aqueous fluorine-carbon paint is characterized in that, it comprises following material:

Mierocrystalline cellulose 0.1-0.3%

Dispersion agent 0.3-0.6%

Wetting agent 0.2-0.5%

Multifunctional assistant 0.1-0.3%

Defoamer 0.1-0.3%

Sanitas 0.1-0.2%

Mould inhibitor 0.2-0.6%

Frostproofer 1.0-4.0%

Film coalescence aid 1.0-3.0%

Flow agent 0.3-0.6%

PU thickening material 0.3-0.6%

Rutile type 16-25%

Water-base fluorocarbon emulsion 35-50%

All the other are solvent deionized water, and described per-cent is weight percentage.

2. aqueous fluorine-carbon paint according to claim 1 is characterized in that, described Mierocrystalline cellulose is the 250HBR of Aqualon company.

3. aqueous fluorine-carbon paint according to claim 1 is characterized in that, described dispersion agent is the 716W of German Degussa company.

4. aqueous fluorine-carbon paint according to claim 1 is characterized in that, described wetting agent is the Triton X-405 of DOW Chemical.

5. aqueous fluorine-carbon paint according to claim 1 is characterized in that, described multifunctional assistant is the AMP-95 of LG-DOW.

6. aqueous fluorine-carbon paint according to claim 1 is characterized in that, described defoamer is the BYK-028 of German Bi Ke chemical company or the Nopco NXZ of German Kening Co.,Ltd.

7. aqueous fluorine-carbon paint according to claim 1 is characterized in that, described sanitas is Kathon LXE.

8. aqueous fluorine-carbon paint according to claim 1 is characterized in that, the composition of described frostproofer is 1, the 2-propylene glycol.

9. aqueous fluorine-carbon paint according to claim 1 is characterized in that, described flow agent is the RM2020 and the RM-8W of ROHM AND HAAS, or NHS300 and NLS200, or other polyurethane thickeners.

10. the preparation method of aqueous fluorine-carbon paint according to claim 1 is characterized in that, may further comprise the steps:

(a), part deionized water, Mierocrystalline cellulose, dispersion agent, wetting agent, multifunctional assistant, half defoamer, sanitas, mould inhibitor, frostproofer, film coalescence aid, flow agent, PU thickening material are added in the container, stirred 10 minutes;

(b), again add rutile type, with the inwall of part washed with de-ionized water container, then high speed dispersion 20-30 minute qualified to fineness;

(c), under stirring at low speed, add water-base fluorocarbon emulsion again, add proper amount of deionized water and half remaining defoamer after stirring again, continue stir about and can finish in 20 minutes.