CN104497835A - Environmentally-friendly PU transparent priming paint producing no prickly heat when thickly coated at high temperature - Google Patents

Abstract

An environmentally-friendly PU transparent priming paint producing no prickly heat when thickly coated at high temperature is disclosed. according to the invention, fatty acid short-oil alkyd resin, 8% organobentonite slurry, talcum powder, zinc stearate, cyclohexanone, butyl acetate, a dispersant, a leveling agent and an antifoaming agent are used to prepare a first component; butyl acetate, IL 1351 BA and L75(C) are used to prepare a second component; n-butyl ester, propylene glycol methyl ether acetate, cyclohexanone and xylene are used to prepare a third component; and during construction, the first component, the second component and the third component are mixed to prepare the environmentally-friendly PU transparent priming paint producing no prickly heat when thickly coated at high temperature. Through a one-time 660g/ square meter construction test on the PU transparent priming paint in an environment of 30 DEG C and 70% relative humidity, it proves that the paint film has no prickly heat when thickly coated once at high temperature and has advantages of good hardness, good abrasiveness, high fullness and little VOC emission. The environmentally-friendly PU transparent priming paint is suitable for priming paint coating of wooden offices and wooden door furniture.

Description

A kind of high gentle and kind painting environmental protection PU transparent priming that heat rash appears

Technical field

The present invention relates to the gentle and kind painting of a kind of height for the woodwork coating environmental protection PU transparent priming that heat rash appears.

Background technology

At furniture paint industry, in common PU transparent priming hot environment, during disposable thick painting, very easily heat rash appears, and priming paint just must can reach requirement, painting inefficiency through repeatedly application, and this is the insoluble problem of industry always.The present invention improves the disposable thick painting of paint film high temperature heat rash appears performance, makes disposablely to complete during primer painting, improves the production efficiency of application, also reduce VOC discharge.The present invention is the material utilizing the good solvent release of large arch dam fullness ratio good: coco-nut oil fatty acid Synolac and large arch dam toluene diisocyanate solidifying agent are to improve the fullness ratio of paint film; By utilize toluene diisocyanate trimer and improve the third curing components agent consolidate the hardness and abrasive property that contain and improve paint film, by the surface drying time utilizing solvent-borne type flow agent to extend paint film, regulate the solvent release of paint film, improve the gentle and kind painting of height of paint film heat rash appears performance, comprehensive above-mentioned every can obtain there is low VOC, hardness is good, abrasive property is good, the thick painting of the high humidity PU transparent priming product that heat rash appears.

Summary of the invention

The object of the invention is: provide a kind of and there is the thick painting of the high humidity environmental protection PU transparent priming that heat rash appears, there is low VOC, hardness be high, abrasive property good, the disposable thick painting performance that heat rash appears of high temperature, to adapt to the disposable thick painting demand under different furniture woodwork hot environment.

The present invention is achieved in that a kind of high gentle and kind painting environmental protection PU transparent priming that heat rash appears, and during application, first, second, the third component weight ratio are 1:0.5:0.5 ~ 0.7;

The weight percent of 8% organobentonite slurry formula:

Production method is according to the following steps: select clean satisfactory dispersion cylinder, drop into coconut oil fat acid resin 40%, dimethylbenzene 50%, wetting dispersing agent 0.2%, after stirring under 600 ~ 800 revs/min of rotating speeds, drop into organobentonite 8%, wash cylinder limit with the dimethylbenzene of remaining 1.8%, be dispersed to fineness≤30um with 1000 ~ 1200 revs/min of rotating speeds, shut down with rear barrelling stand-by;

Described coconut oil fat acid resin be DSM first reach synthetic resins (Foshan) company limited produce resin (trade mark: 3815X70C, admittedly contain: 70%);

Wetting dispersing agent (EFKA-4010).

Organobentonite (Zhejiang Feng Hong HFGEL-140)

The weight percent proportioning of first component:

Be uniformly dispersed to fineness≤30um, viscosity 5000 ~ 8000mpa.s/25 DEG C;

Described lipid acid short-oil alkyd: DSM first reach synthetic resins (Foshan) company limited produce resin (trade mark: 3815-X-70C, Gu containing being 70 ± 2%, OH value 140,

Acid number (by solid part)≤18mg KOH/g,

Color and luster (60%:Fe-Co)≤2, viscosity 30000 ~ 50000CPS/25 DEG C);

The modified polyurethane polymeric dispersant (trade mark: EFKA-4010) that described wetting dispersing agent is produced for EFKA company;

Described solvent-borne type flow agent is the solvent-borne type flow agent (trade mark: BYKETOL-OK) that German Bi Ke company produces;

Described organosilicon flow agent is the modified polyorganosiloxane flow agent (trade mark: 466) of the modest chemical production of extra large name Si De;

Described defoamer A is the trade mark that German Bi Ke company produces is BYK-066N silicone antifoam agent;

Described defoamer B is the trade mark that German Bi Ke company produces is BYK-052 silicone antifoam agent;

Coating (ink) the level Zinic stearas of described Zinic stearas to be the trade mark that the safe material Science and Technology Ltd. in Huaming, Lianyun Harbour produces be BT-1826;

Described 800 order talcum powder are the K board 800 order superfine talcum powder that Guilin Gui Guang talcum development corporation, Ltd. produces.

The proportioning of component B:

Described n-butyl acetate is urethane level solvent;

Described L 75 (C) for the trade mark that German Bayer company produces be the TDI solidifying agent of L75 (C), admittedly be 12.9 ~ 13.4% containing 75%, NCO%, free TDI≤0.5%;

Described IL 1351 BA is the trade mark that German Bayer company produces is the TDI trimer curing agent of IL 1351 BA, admittedly be 7.8 ~ 8.5% containing 50%, NCO%, and free TDI≤0.5%.

Production technique: drop into L 75 (C) 50% ~ 65%, IL 1351 BA 15% ~ 25%, n-butyl acetate 10% ~ 30%, 400r/min dispersed with stirring 30 minutes successively, it is stand-by that sealing is filtered in discharging.

The proportioning of the third component

Stir, stand-by;

The preparation of described first component comprises the following steps:

Production technique: select clean standard compliant dispersion cylinder, add lipid acid short-oil alkyd 61.8% ~ 78.3% successively, organobentonite slurry 6% ~ 8%, pimelinketone 3%, wetting dispersing agent 0.1% ~ 0.3%, defoamer A 0.1% ~ 0.2%, defoamer B 0.2 ~ 0.3%, solvent-borne type flow agent 2%, organosilicon flow agent 0.1% enters in dispersion cylinder, 10 minutes are stirred to full and uniform under the rotating speed of low speed 600 ~ 800 revs/min, Zinic stearas 3 ~ 5% is added under the rotating speed of low speed 600 ~ 800 revs/min, 800 order talcum powder 5% ~ 20%, with the n-butyl acetate cleaning cylinder limit of 0.5%, with 1200 ~ 1500 revs/min of high speed dispersion 10 ~ 15 minutes, to fineness≤30UM, with 0.5 ~ 2.5% n-butyl acetate adjustment viscosity to 5000 ~ 8000mpa.s/25 DEG C of remainder, obtained first component.

With the n-butyl acetate cleaning cylinder limit of 0.5%, namely account for the consumption cleaning cylinder limit of 0.5% of first component gross weight with n-butyl acetate;

With 0.5 ~ 2.5% n-butyl acetate of remainder, namely account for the n-butyl acetate adjustment viscosity of the consumption of 0.5% ~ 2.5% of first component gross weight with n-butyl acetate.

The proportioning of first group, second group, third group, three component is 1:0.5:0.5 ~ 0.7, and the third component does not participate in chemical reaction, only rises and adjusts rare construction action.

The present invention a kind ofly has the disposable thick painting of the high temperature PU transparent priming that heat rash appears, PU transparent priming of the present invention, after testing and probationary certificate, its coating adhesion is strong, fullness ratio good, hardness is high, abrasive property is good, heat rash appears for the disposable thick painting of high temperature, is suitable for the application of wooden office and timber furniture.

Embodiment

Below in conjunction with embodiment, the invention will be further described.

Embodiment 1

The high gentle and kind painting environmental protection PU transparent priming that heat rash appears, during application, first, second, the third component weight ratio are 1:0.5:0.5 ~ 0.7;

The weight percent proportioning of first component:

Be uniformly dispersed to fineness≤30um, viscosity 7000 ~ 8000mpa.s/25 DEG C;

The preparation of described first component comprises the following steps:

Production technique: select clean standard compliant dispersion cylinder, add lipid acid short-oil alkyd 61.8Kg successively, organobentonite slurry 8Kg, pimelinketone 3Kg, wetting dispersing agent 0.3Kg, defoamer A 0.2Kg, defoamer B0.3Kg, solvent-borne type flow agent 2Kg, organosilicon flow agent 0.1Kg enters in dispersion cylinder, 10 minutes are stirred to full and uniform under the rotating speed of low speed 600 ~ 800 revs/min, Zinic stearas 3Kg is added under the rotating speed of low speed 600 ~ 800 revs/min, 800 order talcum powder 20Kg, with the n-butyl acetate cleaning cylinder limit of 0.5Kg, with 1200 ~ 1500 revs/min of high speed dispersion 10 ~ 15 minutes, to fineness≤30UM, with remaining 0.8Kg n-butyl acetate adjustment viscosity to 7000 ~ 8000mpa.s/25 DEG C, obtained first component.

The n-butyl acetate cleaning cylinder limit of described 0.5Kg, consumption is account for each component weight 0.5%;

Described use remaining 0.8Kg n-butyl acetate adjustment viscosity to 7000 ~ 8000mpa.s/25 DEG C is the weight percent proportioning of component B: consumption is account for each component weight 0.8%.In technical scheme of the present invention, described n-butyl acetate add-on, surplus roughly the same, is not described in detail.

L 75 (C) 50%, IL 1351 BA 20%, n-butyl acetate 30%;

Production technique: drop into L 75 (C) 50%, IL 1351 BA 20% and n-butyl acetate 30%, dispersed with stirring 30 minutes successively, discharging sealing is stand-by.

The weight percent proportioning of the third component

Stir, stand-by;

The proportioning of first group, second group, third group of three component is 1:0.5:0.5, and the third component does not participate in chemical reaction, only rises and adjusts rare construction action.

The weight percent of the formula of 8% organobentonite slurry:

Production technique: select clean satisfactory dispersion cylinder; drop into coconut oil fat acid resin 40Kg; dimethylbenzene 50Kg; wetting dispersing agent (EFKA-4010) 0.2Kg; after stirring under 600 ~ 800 revs/min of rotating speeds, drop into organobentonite (Zhejiang Feng Hong HFGEL-140) 8Kg, wash cylinder limit with the dimethylbenzene of 1.8Kg; be dispersed to fineness≤30um with 1000 ~ 1200 revs/min of rotating speeds, after shutting down, barrelling is stand-by.

Embodiment 2

The high gentle and kind painting environmental protection PU transparent priming that heat rash appears, during application, first, second, the third component weight ratio are 1:0.5:0.5 ~ 0.7;

The weight percent proportioning of first component:

Be uniformly dispersed to fineness≤30um, viscosity 5000 ~ 6000mpa.s/25 DEG C

The weight percent proportioning of component B:

L 75 (C) 65%, IL 1351 BA 25%, n-butyl acetate 10%;

Production technique: drop into L 75 (C) 50%, IL 1351 BA 20%, n-butyl acetate 30%, dispersed with stirring 30 minutes successively, discharging sealing is stand-by.

The weight percent proportioning of the third component

Stir, stand-by;

The preparation of described first component comprises the following steps:

Production technique: select clean standard compliant dispersion cylinder, add lipid acid short-oil alkyd 78.3% successively, organobentonite slurry 6%, pimelinketone 3%, wetting dispersing agent 0.1%, defoamer A 0.1%, defoamer B0.1%, solvent-borne type flow agent 2%, organosilicon flow agent 0.1% enters in dispersion cylinder, 10 minutes are stirred to full and uniform under the rotating speed of low speed 600 ~ 800 revs/min, Zinic stearas 4% is added under the rotating speed of low speed 600 ~ 800 revs/min, 800 order talcum powder 5%, with the n-butyl acetate cleaning cylinder limit of 0.5%, with 1200 ~ 1500 revs/min of high speed dispersion 10 ~ 15 minutes, to fineness≤30UM, with remaining 0.7% n-butyl acetate adjustment viscosity to 5000 ~ 6000mpa.s/25 DEG C, obtained first component.

The proportioning of first group, second group, third group, three component is 1:0.5:0.7, and the third component does not participate in chemical reaction, only rises and adjusts rare construction action.

The preparation of 8% organobentonite slurry:

Production technique: select clean satisfactory dispersion cylinder; drop into coconut oil fat acid resin 40%; dimethylbenzene 50%; wetting dispersing agent (EFKA-4010) 0.2%; after stirring under 600 ~ 800 revs/min of rotating speeds, drop into organobentonite (Zhejiang Feng Hong HFGEL-140) 8%, wash cylinder limit with the dimethylbenzene of remaining 1.8%; be dispersed to fineness≤30um with 1000 ~ 1200 revs/min of rotating speeds, after shutting down, barrelling is stand-by.

Each performance index of the gentle and kind painting of the height of the present invention environmental protection PU transparent priming that heat rash appears are as follows:

Each performance index of commercially available common matte varnish are as follows:

PU transparent priming of the present invention and the Performance comparision (constructing at 30 DEG C) of the transparent priming bought back on the market, see the following form:

Interventions Requested	The present invention	Commercial samples
			Sticking power	1 grade	1 grade
Snappiness mm	1	2
			Surface drying time min	48	30
Do solid work time H	3	5
			Hardness 24h	H	HB
Abrasive property 24h	Excellent	Good
			Anti-prickly heat (the 660g/m of thick painting 2)	Good	Generally
Package stability	Meet	Meet
			VOC	533	635

Detection method: performance index can refer to GB/23997-2009, limits of harmful substances is with reference to GB18581-2009.

From above correlation data, PU transparent priming properties of the present invention is more environment protection health compared with market product all, free TDI content and VOC discharge all obvious than commercially available prod low, drying property and hardness are also obvious good than commercially available prod, on 30 DEG C of high temperature, heat rash appears in disposable thick painting construction, can meet the construction requirement of disposable thick painting during Furniture Factory's hot weather.

Above-described is only preferred embodiments of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the principles of the present invention, can also make some improvement and modification, this is also considered as protection scope of the present invention.

Claims (1)

1. the high gentle and kind painting environmental protection PU transparent priming that heat rash appears, during application, first, second, the third component weight ratio are 1:0.5:0.5 ~ 0.7;

The weight percent of 8% organobentonite slurry formula:

Coconut oil fat acid resin 40%, dimethylbenzene 51.8%,

Wetting dispersing agent 0.2%, organobentonite 8%,

Production method is according to the following steps: select clean satisfactory dispersion cylinder, drop into coconut oil fat acid resin 40%, dimethylbenzene 50%, wetting dispersing agent 0.2%, after stirring under 600 ~ 800 revs/min of rotating speeds, drop into organobentonite 8%, the dimethylbenzene with 1.8% washes cylinder limit, be dispersed to fineness≤30um with 1000 ~ 1200 revs/min of rotating speeds, shut down with rear barrelling stand-by;

The weight percent proportioning of first component:

Be uniformly dispersed to fineness≤30um, viscosity 5000 ~ 8000mpa.s/25 DEG C;

The preparation of described first component comprises the following steps:

Production technique: select clean standard compliant dispersion cylinder, add lipid acid short-oil alkyd 61.8% ~ 78.3% successively, organobentonite slurry 6% ~ 8%, pimelinketone 3%, wetting dispersing agent 0.1% ~ 0.3%, defoamer A 0.1% ~ 0.2%, defoamer B 0.2 ~ 0.3%, solvent-borne type flow agent 2%, organosilicon flow agent 0.1% enters in dispersion cylinder, 10 minutes are stirred to full and uniform under the rotating speed of low speed 600 ~ 800 revs/min, Zinic stearas 3 ~ 5% is added under the rotating speed of low speed 600 ~ 800 revs/min, 800 order talcum powder 5% ~ 20%, with the n-butyl acetate cleaning cylinder limit of 0.5%, with 1200 ~ 1500 revs/min of high speed dispersion 10 ~ 15 minutes, to fineness≤30UM, with 0.5 ~ 2.5% n-butyl acetate adjustment viscosity to 5000 ~ 8000mpa.s/25 DEG C of remainder, obtained first component,

The proportioning of component B:

L 75(C) 50％～65％， IL 1351 BA 15％～25％，

N-butyl acetate 10% ~ 30%;

Described n-butyl acetate is urethane level solvent;

Production technique: drop into L 75 (C), IL 1351 BA and n-butyl acetate successively, 400r/min dispersed with stirring 30 minutes, it is stand-by that sealing is filtered in discharging;

The proportioning of the third component

Dimethylbenzene 45% ~ 55%, n-butyl acetate 20% ~ 30%,

1-Methoxy-2-propyl acetate 10% ~ 20%, pimelinketone 5% ~ 20%;

Production method is for stirring, stand-by;

The proportioning of first group, second group, third group, three component is 1:0.5:0.5 ~ 0.7, and the third component does not participate in chemical reaction, only rises and adjusts rare construction action.