CN102363697B

CN102363697B - Waterborne double-component dull finishing type finish paint and preparation method thereof

Info

Publication number: CN102363697B
Application number: CN 201110181607
Authority: CN
Inventors: 吕跃文
Original assignee: CHENGDU BEIDA COATING Co Ltd
Current assignee: CHENGDU BEIDA COATING Co Ltd
Priority date: 2011-06-30
Filing date: 2011-06-30
Publication date: 2013-08-28
Anticipated expiration: 2031-06-30
Also published as: CN102363697A

Abstract

The invention discloses waterborne double-component dull finishing type finish paint and a preparation method thereof and belongs to the field of paint. The waterborne double-component dull finishing type finish paint comprises a component A and a component B, wherein the component A comprises the following materials in part by weight: 50-60 parts of polyacrylic polyols, 0.1-0.5 part of dispersing agents, 0.1-0.5 parts of anti-settling agents, 0.1-0.5 parts of de-foaming agents, 0.2-8.0 parts of dull finishing agents, 0.1-0.5 part of flatting agents, 0.1-2.0 parts of film-forming auxiliaries and 1.0-5.0 parts of water; the component B is an anionic modified HDI (Hexamethylene Diisocyanate) polyisocyanate; and the weight ratio of the component A to the component B is 1: (0.2-0.3). The waterborne double-component dull finishing type finish paint has excellent glossiness and appearance, is excellent in stain resistance and chemical property, never becomes yellow, is rust-proof and high-temperature resistant, and can be simultaneously applied together with other paint, such as emulsion paint.

Description

Aqueous dual-component extinction type clear finish and preparation method thereof

Technical field

The invention belongs to paint field, be specifically related to a kind of aqueous dual-component extinction type clear finish and preparation method thereof.

Background technology

Various coating types on the market are various now, mainly are divided into organic coating and inorganic paint, and organic coating is divided into organic solvent type coating and organic water-borne coatings again according to the solvent difference of using.Organic solvent type coating is because the VOC height, can not satisfy that people strengthen day by day to environmental protection requirement.

Organic water-borne coatings, being water-borne coatings, becoming the focus of research now day by day, is the aqueous woodware paint of main component with vinylformic acid, principal feature is that sticking power is good, can not deepen the color of woodenware, but wear-resisting and anti-chemical is relatively poor, hardness of paint film is softer, the examination of pencil rule is HB, fullness ratio is relatively poor, and over-all properties is general, and construction easily produces defective.

Existing coating causes easily that paint film is inhomogeneous, degradation after for some time, do not have lacquer such as sticking power sick, and stain resistance and chemical moral character are poor, easily poor, the non-refractory of xanthochromia, antirust ability etc.

Summary of the invention

The technical problem to be solved in the present invention is that coating causes easily that paint film is inhomogeneous, degradation after for some time, do not have lacquer such as sticking power sick in the prior art, and stain resistance and chemical moral character are poor, easily the problem of poor, the non-refractory of xanthochromia, antirust ability.

The technical scheme that the present invention solves this technical problem is: aqueous dual-component extinction type clear finish, it is made of component A and B component, the weight proportion of described component A is: 50～60 parts of polyacrylic acid polyvalent alcohols, 0.1～0.5 part of dispersion agent, 0.1～0.5 part of anti-settling agent, 0.1～0.5 part of defoamer, 2.0～8.0 parts of matting agents, 0.1～0.5 part of flow agent, 0.1～2.0 part of film coalescence aid, 1.0～5.0 parts in water; Described B component is anion-modified HDI polyisocyanates; The weight ratio of component A and B component is 1:0.2～0.3.

Wherein, in the weight proportion of component A described above, the polyacrylic acid polyvalent alcohol is 55 parts, and dispersion agent is 0.3 part, and anti-settling agent is 0.3 part, and defoamer is 0.3 part, and matting agent is 5 parts, and flow agent is 0.3 part, and film coalescence aid is 1 part, and water is 0.3 part.

Wherein, the weight ratio of component A described above and B component is 1 ︰ 0.25.

The present invention also provides a kind of preparation method of aqueous dual-component extinction clear finish, and it may further comprise the steps:

A, preparation component A: by weight ratio, in stirred vessel, add 50～60 parts of polyacrylic acid polyvalent alcohols, 0.1～0.5 part of dispersion agent, 0.1～0.5 part of anti-settling agent, 0.1～0.5 part of defoamer successively, after stirring, 600～800r/min slowly adds 2.0～8.0 parts of matting agents, mixing speed is adjusted to 1200～1500r/min to be stirred 10～15 minutes, add 0.1～0.5 part of flow agent, 0.1～2.0 part of film coalescence aid then successively, 600～800r/min stirs, 1.0～5.0 parts of cleaning equipments of water and adjustment viscosity are filtered and are obtained component A.

B, the component A that a step is obtained and B component add the water allotment evenly by weight the proportioning of 1 ︰ 0.2～0.3, get product, and described B component is anion-modified HDI polyisocyanates.

Wherein, adjustment viscosity described above refers to viscosity is adjusted into 120～130KU.

The present invention is to be the coating of solvent or dispersion medium with water, and it has important environment protection significance, asepsis environment-protecting, and hazardous solvent such as containing benezene does not contain free TDI, by the invisible transformation of solvent-borne type PU hydrotropisms PU.

The present invention adopts polyacrylic acid polyvalent alcohol and polyisocyanates to send out through chemically crosslinked and answers, and generates a kind of high performance polyether polyols with reduced unsaturation.Solved polyacrylic acid polyvalent alcohol and the perfect emulsification of anion-modified HDI polyisocyanates under low-shearing power, be easy to mix; Solved owing to the emulsifying agent of bonding not moves in coating and caused that paint film is inhomogeneous, degradation after for some time, do not had lacquer such as sticking power sick, guaranteed that the emulsifying agent group is connected on the polymer chain and evenly distributes, and makes coating have permanent stability.

The present invention has excellent gloss and outward appearance, and stain resistance and chemical moral character are excellent, xanthochromia, antirust, high temperature resistant not, can with other paint construction simultaneously such as emulsion paint.

Embodiment

In the following example, the polyacrylic acid polyvalent alcohol adopts the Bayhydrol A145 of Bayer A.G, and film coalescence aid adopts DPnB (dipropylene glycol butyl ether).

Embodiment 1

A, by weight, in stirred vessel, add 50 parts of polyacrylic acid polyvalent alcohols successively, 0.1 part of dispersion agent (BYK194 of German Bi Ke), 0.1 part of anti-settling agent (Supreme Being Si Balong LA530), 0.1 part of defoamer (Tego902W that enlightening is high), after stirring, 600r/min slowly adds matting agent (TS100 of Degussa) 2.0 parts, mixing speed is adjusted to 1200r/min to be stirred 15 minutes, add 0.1 part of flow agent (BYK346 of German Bi Ke) then successively, 0.1 part of film coalescence aid (DPnB), 600r/min stirs, 1.0 parts of cleaning equipments of water and adjustment viscosity are filtered and are obtained component A to 120KU.

B, even by the proportioning allotment of component A ︰ component B ︰ water=1 ︰, 0.2 ︰ 0.3 gets product, and described B component is anion-modified HDI polyisocyanates.

Embodiment 2

A, by weight, in stirred vessel, add 60 parts of polyacrylic acid polyvalent alcohols successively, 0.5 part of dispersion agent (Tego360 that enlightening is high), 0.5 part of anti-settling agent (Supreme Being Si Balong LA530), 0.5 part of defoamer (BYK028 of German Bi Ke), after stirring, 800r/min slowly adds matting agent (TS100 of Degussa) 8.0 parts, mixing speed is adjusted to 1500r/min to be stirred 10 minutes, add 0.5 part of flow agent (BYK346 of German Bi Ke) then successively, 2.0 parts of film coalescence aid (DPnB), 800r/min stirs, 5.0 parts of cleaning equipments of water and adjustment viscosity are filtered and are obtained component A to 130KU.

B, even by the proportioning allotment of component A ︰ component B ︰ water=1 ︰, 0.3 ︰ 0.5 gets product, and described B component is anion-modified HDI polyisocyanates.

Embodiment 3

A, by weight, in stirred vessel, add 55 parts of polyacrylic acid polyvalent alcohols successively, 0.3 part of dispersion agent (BYK194 of German Bi Ke), 0.3 part of anti-settling agent (Supreme Being Si Balong LA530), 0.3 part of defoamer (BYK028 of German Bi Ke), after stirring, 700r/min slowly adds 5 parts of TS100 matting agents, mixing speed is adjusted to 1400r/min to be stirred 12 minutes, add 0.3 part of flow agent (EFKA3600 of EFKA company) then successively, 1 part of film coalescence aid (DPnB), 700r/min stirs, 3 parts of cleaning equipments of water and adjustment viscosity are filtered and are obtained component A to 125KU.

B, even by the proportioning allotment of component A ︰ component B ︰ water=1 ︰, 0.25 ︰ 0.4 gets product, and described B component is anion-modified HDI polyisocyanates.

Embodiment 4

A, by weight, in stirred vessel, add 55 parts of polyacrylic acid polyvalent alcohols successively, 0.2 part of dispersion agent (BYK194 of German Bi Ke), 0.4 part of anti-settling agent (Supreme Being Si Balong LA530), 0.3 part of defoamer (BYK028 of German Bi Ke), after stirring, 750r/min slowly adds matting agent (TS100 of Degussa) 4 parts, mixing speed is adjusted to 1400r/min to be stirred 13 minutes, add 0.2 part of flow agent (BYK346 of German Bi Ke) then successively, 1.5 parts of film coalescence aid (DPnB), 750r/min stirs, 4 parts of cleaning equipments of water and adjustment viscosity are filtered and are obtained component A to 120KU.

B, even by the proportioning allotment of component A ︰ component B ︰ water=1 ︰, 0.25 ︰ 0.3 gets product, and described B component is anion-modified HDI polyisocyanates.

Embodiment 5

A, by weight, add 52 parts of polyacrylic acid polyvalent alcohols successively at stirred vessel, 0.2 part of dispersion agent (BYK194 of German Bi Ke), 0.1 part of anti-settling agent (Supreme Being Si Balong LA530), 0.5 part of defoamer (BYK028 of German Bi Ke), after stirring, 650r/min slowly adds matting agent (TS100 of Degussa) 7 parts, mixing speed is adjusted to 1280r/min to be stirred 10 minutes, add 0.2 part of flow agent (Tego410 that enlightening is high) then successively, 0.8 part of film coalescence aid (DPnB), 650r/min stirs, 2 parts of cleaning equipments of water and adjustment viscosity are filtered and are obtained component A to 125KU.

Each embodiment product parameters performance of table 1 and solvent type contrast table:

Test event

Solvent-borne type

Embodiment 1

Embodiment 2

Embodiment 3

Embodiment 4

Embodiment 5

Paint film appearance

Smooth smooth

The feature of environmental protection

Contain hazardous solvents such as benzene

Do not contain hazardous solvents such as benzene

Free TDI

Contain

Do not contain

Sticking power

0 grade

Pencil hardness

H

Chemicals-resistant

Excellent

Levelling property

Excellent

Generally

Can accept

Excellent

Defoaming

Excellent

Generally

Excellent

Can accept

Surface drying (min)

10-20

16

17

15

16

15

Tack-free (h)

2-4

3

VOC（g/l）

Less than 580

180

Application property

Easily

As seen from Table 1, product VOC content of the present invention is starkly lower than solvent type lacquer, and does not contain benzene and free TDI, environmental protection more, and other indexs also are equal to solvent-borne type.

Claims

1. aqueous dual-component extinction type clear finish, it is characterized in that: it is made of component A and B component, the weight proportion of described component A is: the polyacrylic acid polyvalent alcohol is 55 parts, dispersion agent is 0.3 part, and anti-settling agent is 0.3 part, and defoamer is 0.3 part, matting agent is 5 parts, flow agent is 0.3 part, and film coalescence aid is 1 part, and water is 3 parts; Described B component is anion-modified HDI polyisocyanates; The weight ratio of component A and B component is 1:0.25;

Described polyacrylic acid polyvalent alcohol adopts the Bayhydrol A145 of Bayer A.G, film coalescence aid adopts the dipropylene glycol butyl ether, dispersion agent adopts the BYK194 of German Bi Ke, anti-settling agent adopts Supreme Being Si Balong LA530, defoamer adopts the BYK028 of German Bi Ke, flow agent adopts the EFKA3600 of EFKA company, and the model of matting agent is TS100.

2. the preparation method of the described aqueous dual-component extinction of claim 1 clear finish, it is characterized in that: it may further comprise the steps:

A, by weight, in stirred vessel, add polyacrylic acid polyvalent alcohol, dispersion agent, anti-settling agent, defoamer successively, after stirring, 700r/min slowly adds matting agent, mixing speed is adjusted to 1400r/min to be stirred 12 minutes, add 1 part of flow agent, film coalescence aid then successively, 700r/min stirs, and water cleaning equipment and adjustment viscosity are filtered and obtained component A to 125KU;

3. aqueous dual-component extinction type clear finish, it is characterized in that: it is made of component A and B component, the weight proportion of described component A is: the polyacrylic acid polyvalent alcohol is 50 parts, dispersion agent is 0.0 part, and anti-settling agent is 0.1 part, and defoamer is 0.1 part, matting agent is 2 parts, flow agent is 0.1 part, and film coalescence aid is 0.1 part, and water is 1 part; Described B component is anion-modified HDI polyisocyanates; The weight ratio of component A and B component is 1:0.2;

Described polyacrylic acid polyvalent alcohol adopts the Bayhydrol A145 of Bayer A.G, film coalescence aid adopts the dipropylene glycol butyl ether, dispersion agent adopts the BYK194 of German Bi Ke, anti-settling agent adopts Supreme Being Si Balong LA530, defoamer adopts the high Tego902W of enlightening, flow agent adopts the BYK346 of German Bi Ke, and matting agent adopts the TS100 of Degussa.

4. the preparation method of the described aqueous dual-component extinction of claim 3 clear finish, it is characterized in that: it may further comprise the steps:

A, by weight, in stirred vessel, add polyacrylic acid polyvalent alcohol, dispersion agent, anti-settling agent, defoamer successively, after stirring, 600r/min slowly adds matting agent, mixing speed is adjusted to 1200r/min to be stirred 12 minutes, add 1 part of flow agent, film coalescence aid then successively, 600r/min stirs, and water cleaning equipment and adjustment viscosity are filtered and obtained component A to 120KU;

5. aqueous dual-component extinction type clear finish, it is characterized in that: it is made of component A and B component, the weight proportion of described component A is: the polyacrylic acid polyvalent alcohol is 60 parts, dispersion agent is 0.5 part, and anti-settling agent is 0.5 part, and defoamer is 0.5 part, matting agent is 8 parts, flow agent is 0.5 part, and film coalescence aid is 2 parts, and water is 5 parts; Described B component is anion-modified HDI polyisocyanates; The weight ratio of component A and B component is 1:0.3;

Described polyacrylic acid polyvalent alcohol adopts the Bayhydrol A145 of Bayer A.G, film coalescence aid adopts the dipropylene glycol butyl ether, dispersion agent adopts the high Tego360 of enlightening, anti-settling agent adopts Supreme Being Si Balong LA530, defoamer adopts the BYK028 of German Bi Ke, flow agent adopts the BYK346 of German Bi Ke, and matting agent adopts the TS100 of Degussa.

6. the preparation method of the described aqueous dual-component extinction of claim 5 clear finish, it is characterized in that: it may further comprise the steps:

A, by weight, in stirred vessel, add polyacrylic acid polyvalent alcohol, dispersion agent, anti-settling agent, defoamer successively, after stirring, 800r/min slowly adds matting agent, mixing speed is adjusted to 1500r/min to be stirred 12 minutes, add 1 part of flow agent, film coalescence aid then successively, 800r/min stirs, and water cleaning equipment and adjustment viscosity are filtered and obtained component A to 130KU;

7. aqueous dual-component extinction type clear finish, it is characterized in that: it is made of component A and B component, the weight proportion of described component A is: the polyacrylic acid polyvalent alcohol is 55 parts, dispersion agent is 0.2 part, and anti-settling agent is 0.4 part, and defoamer is 0.3 part, matting agent is 4 parts, flow agent is 0.2 part, and film coalescence aid is 1.5 parts, and water is 3 parts; Described B component is anion-modified HDI polyisocyanates; The weight ratio of component A and B component is 1:0.25;

Described polyacrylic acid polyvalent alcohol adopts the Bayhydrol A145 of Bayer A.G, film coalescence aid adopts the dipropylene glycol butyl ether, dispersion agent adopts the BYK194 of German Bi Ke, anti-settling agent adopts Supreme Being Si Balong LA530, defoamer adopts the BYK028 of German Bi Ke, flow agent adopts the BYK346 of German Bi Ke, and matting agent adopts the TS100 of Degussa.

8. the preparation method of the described aqueous dual-component extinction of claim 7 clear finish, it is characterized in that: it may further comprise the steps:

A, by weight, in stirred vessel, add polyacrylic acid polyvalent alcohol, dispersion agent, anti-settling agent, defoamer successively, after stirring, 750r/min slowly adds matting agent, mixing speed is adjusted to 1400r/min to be stirred 12 minutes, add 1 part of flow agent, film coalescence aid then successively, 750r/min stirs, and water cleaning equipment and adjustment viscosity are filtered and obtained component A to 120KU;

9. aqueous dual-component extinction type clear finish, it is characterized in that: it is made of component A and B component, the weight proportion of described component A is: the polyacrylic acid polyvalent alcohol is 52 parts, dispersion agent is 0.2 part, and anti-settling agent is 0.1 part, and defoamer is 0.5 part, matting agent is 7 parts, flow agent is 0.2 part, and film coalescence aid is 0.8 part, and water is 2 parts; Described B component is anion-modified HDI polyisocyanates; The weight ratio of component A and B component is 1:0.25;

Described polyacrylic acid polyvalent alcohol adopts the Bayhydrol A145 of Bayer A.G, film coalescence aid adopts the dipropylene glycol butyl ether, dispersion agent adopts the BYK194 of German Bi Ke, anti-settling agent adopts Supreme Being Si Balong LA530, defoamer adopts the BYK028 of German Bi Ke, flow agent adopts the high Tego410 of enlightening, and matting agent adopts the TS100 of Degussa.

10. the preparation method of the described aqueous dual-component extinction of claim 9 clear finish, it is characterized in that: it may further comprise the steps:

A, by weight, in stirred vessel, add polyacrylic acid polyvalent alcohol, dispersion agent, anti-settling agent, defoamer successively, after stirring, 650r/min slowly adds matting agent, mixing speed is adjusted to 1280r/min to be stirred 12 minutes, add 1 part of flow agent, film coalescence aid then successively, 650r/min stirs, and water cleaning equipment and adjustment viscosity are filtered and obtained component A to 125KU;