CN102363707B - Aqueous monocomponent matting white finish and preparation method thereof - Google Patents

Abstract

The invention relates to a finish, and concretely relates to an aqueous monocomponent matting white finish. The aqueous monocomponent matting white finish is prepared through carrying out a self-chemical crosslinking reaction on 40-50% of an aqueous polyurethane dispersion and 20-30% of polyacrylic acid modified polyurethane, and mixing with a wetting agent, a thickening agent, an antifoaming agent, titanium dioxide, a matting agent, a mildew inhibitor, an antiseptic, a rheological agent, a film forming assistant and water. The aqueous monocomponent matting white finish, which has performances of solvent-based white finishes, has the characteristics of environmental protection, low carbon, good matting property, and solution of a problem that routine aqueous paints have a bad compatibility with other aqueous systems.

Description

Aqueous monocomponent matting white finish and preparation method thereof

Technical field

What the present invention relates to is a kind of finish paint, specifically refers to a kind of aqueous monocomponent matting white finish.

Background technology

Usually traditional solvent-borne type finish paint all contains hazardous solvent and the free TDIs such as benzene class, and the person and environment are all had a great impact.And conventional water-miscible paint has and the problem such as other water-based system consistencies are bad.

Summary of the invention

The purpose of this invention is to provide and a kind ofly not only have the advantage of solvent-borne type encapsulant and have environmental protection, low-carbon (LC) performance can also solve the aqueous monocomponent matting white finish of conventional water-miscible paint and other water-based system consistency problem of poor.

Realize that technical scheme of the present invention is as follows:

Aqueous monocomponent matting white finish is comprised of following compositions in weight percentage:

Aqueous polyurethane dispersion 40%～50%

Polyacrylic acid modified urethane 20%～30%

Wetting agent 0.1%～0.5%

Thickening material 1.0%～2.0%

Defoamer 0.1%～0.5%

Titanium dioxide 9.0%～15.0%

Matting agent 2.0%～8.0%

Mould inhibitor 0.1%～0.5%

Sanitas 0.1%～0.5%

Rheological agent 0.1%～0.5%

Film coalescence aid 0.1%～2.0%

Water 1.0%～5.0%.

As a kind of preferred, described wetting agent is the BYK 156 type wetting agents of the high Tego 752w type wetting agent of ADS 6109 type wetting agents, the enlightening of Hai Chuan, German Bi Ke or the EFKA 4759 type wetting agents of EFKA, and described defoamer is the BYK 028 type defoamer of the peaceful FOAMSTAR A10 type defoamer of the high Tego of enlightening 801 type defoamers, section or German Bi Ke.

A kind of preparation method of aqueous monocomponent matting white finish, its preparation process is as follows:

(1) under the whipped state of stirred vessel 600～800r/min, adding successively weight percent is 40%～50% aqueous polyurethane dispersion, 20%～30% polyacrylic acid modified urethane, 0.1%～0.5% wetting agent, 1.0%～2.0% thickening material, 0.1%～0.5% defoamer, stirs;

(2) continue under the agitation condition of 600～800r/min, slowly adding weight percent is 9.0%～15.0% titanium dioxide and 2.0～8.0% matting agent, regulate the rotating speed of stirred vessel, be stirred to fineness less than or equal to 25um under the speed of 1200～1500r/min;

(3) regulate the rotating speed to 600 of stirred vessel～800r/min, and to add successively weight percent be 0.1%～0.5% mould inhibitor, 0.1%～0.5% sanitas, 0.1～0.5% rheological agent, 0.1%～2.0% film coalescence aid, stir;

(4) be that 1.0%～5.0% water cleans this stirred vessel with weight percent, viscosity adjusted to 120KU～130KU get final product.

The present invention has the following advantages and beneficial effect:

1, the present invention is take water as solvent or the coating of dispersion medium, and it has important environment protection significance, asepsis environment-protecting, and the hazardous solvent such as containing benezene, do not contain free TDI.

2, the invention solves the conventional water-miscible paint problem poor to the timber wettability, and the phenomenon bad with other water-based system consistencies; Solved the possibility of emulsion meeting breakdown of emulsion under high-speed stirring.

3, the present invention has excellent extinction, stain resistance, chemical moral character and mechanical property, the present invention can with other paint construction simultaneously such as emulsion paint, processing ease and variation.

Embodiment

The present invention is described further below in conjunction with embodiment, but embodiments of the present invention are not limited to this.

Embodiment 1

aqueous monocomponent matting white finish, be mainly the AC 2782 type aqueous polyurethane dispersion of 43% peace cutting edge of a knife or a sword by weight percent, the polyacrylic acid modified urethane of U9800 type of 30% Bayer, the ADS 6109 type wetting agents of 0.5% Hai Chuan, 1.5% U.S. Asia is across the AQUAFLOW NHS 300 type thickening materials of dragon, the Tego 801 type defoamers that 0.5% enlightening is high, the R706 type titanium dioxide of 10% Du Pont, the TS-100 type matting agent of 6% Degussa, 0.5% PCTS BIOX CM type mould inhibitor, 0.5% PCTS BIOX VFB1 type sanitas, the BYK 346 type rheological agents of 0.5% German Bi Ke, the TM-3 type film coalescence aid of 2.0% sunrise chemical industry, 5.0% water forms.

Prepare each component according to above weight percent, be prepared according to following steps:

(1) under the whipped state of stirred vessel 700r/min, adding successively weight percent is 43% aqueous polyurethane dispersion, 30% polyacrylic acid modified urethane, 0.5% wetting agent, 1.5% thickening material, 0.5% defoamer, stirs;

(2) continue under the agitation condition of 700r/min, slowly adding weight percent is 10% titanium dioxide and 6% matting agent, regulates the rotating speed of stirred vessel, is stirred to fineness less than or equal to 25um under the speed of 1400r/min;

(3) rotating speed of regulating stirred vessel is to 700r/min, and to add successively weight percent be 0.5% mould inhibitor, 0.5% sanitas, 0.5% rheological agent, 2.0% film coalescence aid, stirs;

(4) be that 5.0% water cleans this stirred vessel with weight percent, viscosity adjusted to 120KU get final product.

During use, be that the ratio of 1 ︰ 0.4 adds this aqueous sealing primer and water by weight, it is mixed, can construct after bubble is eliminated in standing 10 minutes.Wherein, the consumption of water can adjust according to user's requirement.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 2

Compare with embodiment 1, what the difference of the present embodiment was the wetting agent employing is the high Tego 752w type wetting agent of enlightening, and what defoamer adopted is the peaceful FOAMSTAR A10 type defoamer of section, and the weight percent of each component of the present embodiment is different.

the aqueous monocomponent matting white finish of the present embodiment is mainly the AC 2782 type aqueous polyurethane dispersion of 46% peace cutting edge of a knife or a sword by weight percent, the polyacrylic acid modified urethane of U9800 type of 28% Bayer, the Tego 752w type wetting agent that 0.4% enlightening is high, 1.8% U.S. Asia is across the AQUAFLOW NHS 300 type thickening materials of dragon, the FOAMSTAR A10 type defoamer that 0.4% section is peaceful, the R706 type titanium dioxide of 13% Du Pont, the TS-100 type matting agent of 4% Degussa, 0.3% PCTS BIOX CM type mould inhibitor, 0.3% PCTS BIOX VFB1 type sanitas, the BYK 346 type rheological agents of 0.4% German Bi Ke, the TM-3 type film coalescence aid of 1.4% sunrise chemical industry, 4.0% water forms.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 3

Compare with embodiment 1, what the difference of the present embodiment was the wetting agent employing is the wetting agent of BYK 156, and the weight percent of each component of the present embodiment is different.

the aqueous monocomponent matting white finish of the present embodiment is mainly the AC 2782 type aqueous polyurethane dispersion of 48% peace cutting edge of a knife or a sword by weight percent, the polyacrylic acid modified urethane of U9800 type of 22% Bayer, the wetting agent of 0.3% BYK 156, 1.3% U.S. Asia is across the AQUAFLOW NHS 300 type thickening materials of dragon, the Tego 801 type defoamers that 0.3% enlightening is high, the R706 type titanium dioxide of 15% Du Pont, the TS-100 type matting agent of 8% Degussa, 0.4% PCTS BIOX CM type mould inhibitor, 0.4% PCTS BIOX VFB1 type sanitas, the BYK 346 type rheological agents of 0.3% German Bi Ke, the TM-3 type film coalescence aid of 1.0% sunrise chemical industry, 3.0% water forms.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 4

Compare with embodiment 1, what the difference of the present embodiment was the wetting agent employing is the high Tego 752w type wetting agent of enlightening, and what defoamer adopted is the BYK 028 type defoamer of German Bi Ke, and the weight percent of each component of the present embodiment is different.

the aqueous monocomponent matting white finish of the present embodiment is mainly the AC 2782 type aqueous polyurethane dispersion of 50% peace cutting edge of a knife or a sword by weight percent, the polyacrylic acid modified urethane of U9800 type of 25% Bayer, the Tego 752w type wetting agent that 0.4% enlightening is high, 1.3% U.S. Asia is across the AQUAFLOW NHS 300 type thickening materials of dragon, the BYK 028 type defoamer of 0.2% German Bi Ke, the R706 type titanium dioxide of 12% Du Pont, the TS-100 type matting agent of 5% Degussa, 0.1% PCTS BIOX CM type mould inhibitor, 0.1% PCTS BIOX VFB1 type sanitas, the BYK 346 type rheological agents of 0.4% German Bi Ke, the TM-3 type film coalescence aid of 0.5% sunrise chemical industry, 5.0% water forms.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 5

Compare with embodiment 1, what the difference of the present embodiment was the wetting agent employing is the EFKA 4759 type wetting agents of EFKA, as shown in table 1 by the various test parameters of the prepared product of above raw material.

Table 1

Test event

Technical requirements

The finish paint of conventional solvent type

Embodiment 1

Embodiment 2

Embodiment 3

Embodiment 4

Embodiment 5

Wetting agent

Nothing

Traditional wetting agent

The ADS 6109 type wetting agents of Hai Chuan

The Tego 752w type wetting agent that enlightening is high

The BYK 156 type wetting agents of Germany Bi Ke

The Tego 752w type wetting agent that enlightening is high

The EFKA 4759 type wetting agents of EFKA

Defoamer

Nothing

Traditional defoamer

The Tego 801 type defoamers that enlightening is high

The FOAMSTAR A10 type defoamer that section is peaceful

The Tego 801 type defoamers that enlightening is high

The BYK 028 type defoamer of Germany Bi Ke

The Tego 801 type defoamers that enlightening is high

Paint film appearance

Smooth smooth

Smooth smooth

Smooth smooth

Smooth smooth

Smooth smooth

Smooth smooth

Smooth smooth

Whether contain the hazardous solvents such as benzene

Nothing

Contain

Do not contain

Do not contain

Do not contain

Do not contain

Do not contain

Sticking power

≤ 0～2 grades

1 grade

0 grade

0 grade

0 grade

0 grade

0 grade

Pencil hardness

≥B

HB

HB

HB

HB

HB

HB

Chemical-resistant

2h passes through

Excellent

Excellent

Excellent

Excellent

Excellent

Excellent

Surface drying min

≤30

10～20

10～20

10～20

10～20

10～20

10～20

Tack-free h

≤8

2～4

2～4

2～4

2～4

2～4

2～4

Grinability

Good

Good

Good

Good

Good

Good

Good

VOC,g/L

Technical requirements

Less than 580

Less than 200

Less than 200

Less than 200

Less than 200

Less than 200

Application property

Nothing

Easily

Easily

Easily

Easily

Easily

Easily

Can be drawn by above data, coating of the present invention does not only contain the organic solvents such as benzene, and this product has simultaneously that solvent-borne type encapsulant sticking power is excellent, hardness is higher, wear resisting property is better, and the good and chemical resistance of physical and mechanical properties is advantage preferably.Extinction of the present invention is excellent, the content of volatile organic compounds (VOC) is significantly less than conventional solvent type coating.This watersoluble closed dose do not lump when being compatible with other water-based, not gelling, have good consistency.

According to above design, just can realize preferably the present invention.

Claims (2)

1. aqueous monocomponent matting white finish, it is characterized in that: the raw material by following weight percent forms:

Aqueous polyurethane dispersion 40%～50%

Polyacrylic acid modified urethane 20%～30%

Wetting agent 0.1%～0.5%

Thickening material 1.0%～2.0%

Defoamer 0.1%～0.5%

Titanium dioxide 9.0%～15.0%

Matting agent 2.0%～8.0%

Mould inhibitor 0.1%～0.5%

Sanitas 0.1%～0.5%

Rheological agent 0.1%～0.5%

Film coalescence aid 0.1%～2.0%

Water 1.0%～5.0%.

2. the preparation method of an aqueous monocomponent matting white finish, it is characterized in that: the step for preparing this product is as follows:

(1) under the whipped state of stirred vessel 600～800r/min, adding successively weight percent is 40%～50% aqueous polyurethane dispersion, 20%～30% polyacrylic acid modified urethane, 0.1%～0.5% wetting agent, 1.0%～2.0% thickening material, 0.1%～0.5% defoamer, stirs;

(2) continue under the agitation condition of 600～800r/min, slowly adding weight percent is 9.0%～15.0% titanium dioxide and 2.0～8.0% matting agent, regulate the rotating speed of stirred vessel, be stirred to fineness less than or equal to 25um under the speed of 1200～1500r/min;

(3) regulate the rotating speed to 600 of stirred vessel～800r/min, and to add successively weight percent be 0.1%～0.5% mould inhibitor, 0.1%～0.5% sanitas, 0.1～0.5% rheological agent, 0.1%～2.0% film coalescence aid, stir;

(4) be that 1.0%～5.0% water cleans this stirred vessel with weight percent, viscosity adjusted to 120KU～130KU get final product.