CN101735676A - Aqueous ultraviolet-curable transparent middle coating primer with high solid content and preparation method thereof - Google Patents

Abstract

The invention provides an aqueous ultraviolet-curable transparent middle coating primer with a high solid content and a preparation method thereof. The aqueous ultraviolet-curable transparent middle coating primer with the high solid content comprises the following compositions in percentage by weight: 60 to 87 percent of aqueous ultraviolet resin, 3 to 10 percent of aqueous reactive diluent, 5 to 15 percent of talcpowder, 0 to 10 percent of calcium carbonate, 0.5 to 1.0 percent of gas-phase silicon dioxide, 1.0 to 3.0 percent of photoinitiator, 0.1 to 0.5 percent of antifoaming agent, 0.1 to 0.2 percent of sterilizer, 0.1 to 0.2 percent of wetter, 0.1 to 0.2 percent of pH regulator, 0.1 to 0.5 percent of thickener and 1 to 2 percent of water. The aqueous ultraviolet resin is water-soluble type or water-dispersible type with over 90 percent of the solid content. The aqueous ultraviolet-curable transparent middle coating primer with the high solid content has the advantages of high solid content, high hardness, good transparency, environmental protection, no odor, capacity of being diluted directly by water and cured by ultraviolet, and short operation period.

Description

The UV-curable waterborne height contains admittedly primes and preparation method thereof in transparent

Technical field

The present invention relates to a kind of woodwork coating, be specially a kind of woodwork use ultraviolet light polymerization height and contain transparent priming admittedly.

Technical background

At present, woodenware use ultraviolet-curing paint contains (or effective constituent) admittedly generally below 40%, and this is that its weight is contained in about 40% admittedly because current aquosity ultraviolet light resin mostly is emulsion-type or water-dispersion build greatly, and moisture content is more than 50%.Because it is low that it contains admittedly, the water content height, the time of doing of waiting that must be long before curing just can cross ultraviolet lamp after allowing moisture evaporate as far as possible, films otherwise can not get ideal, and the drying of ultraviolet-curing paint fast can not get embodying.Therefore, this coating and be not suitable for doing in prime.It is current mainly to be to be used for seal coat to improve the defective of the not good or scrath resistance difference of solvent-borne type ultraviolet-curing paint sticking power on some base material in plant produced.It then is a blank that the UV-curable waterborne height that is used for priming contains transparent priming admittedly always.

Summary of the invention

The UV-curable waterborne height that the purpose of this invention is to provide a kind of woodenware contains admittedly primes and preparation method thereof in transparent, to overcome the defective that prior art exists, satisfies the needs of relevant industry.

The UV-curable waterborne height of woodenware of the present invention contains admittedly primes in transparent, comprises following components in weight percentage:

Aquosity ultraviolet light resin 60%～87%

Water-based response type thinner 3%～10%

Talcum powder 3%～15%

Lime carbonate 0～10%

Aerosil 0.5%～1.0%

Light trigger 1.0%～3.0%

Water 1%～2%

The per-cent sum of said components is 100%.

The chemical name of said aquosity ultraviolet light resin is the UV-curable waterborne acrylic resin, maybe can adopt the commercially available prod, as the U-30W (95% weight contains admittedly) of DSM company or the CN9245 (100% weight contains admittedly) of Sartomer company;

Said reactive diluent is methacrylic acid-beta-hydroxy ethyl ester (HEMA) or senecioate-hydroxyl ethyl ester (HEA);

Said talcous particle diameter is 1000～2000 orders;

The particle diameter of said lime carbonate is 1000～2000 orders;

Described light trigger is selected from 2-hydroxy-2-methyl-1-phenyl-1-acetone, as the RUNTECURE 1103 of Changzhou Hua Tai company or in 2-hydroxy-2-methyl-1-phenyl-1-acetone and 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide more than one, as the RUNTECURE1265 of Changzhou Hua Tai company, be better wetting ability to be arranged and better cause effect with the latter's benefit;

Preferably, also comprise the defoamer of gross weight 0.1%～0.5%, the preferred polysiloxane-polyether copolymer of defoamer, the trade mark that can adopt TEGO company is the product of TEGO810;

Preferably, also comprise the sterilant of gross weight 0.1%～0.2%, sterilant can be selected isothiazole woods ketone, as the K-20 of German Shu Mei company;

Preferably, also comprise the wetting agent of gross weight 0.1%～0.2%, the preferred polysiloxane-polyether copolymerization of base material wetting agent, the trade mark that can adopt TEGO company is the product of TEGO245;

Said defoamer and base material wetting agent are polysiloxane-polyether copolymer, and still, difference wherein is that the former wetting ability is poor, and latter's wetting ability will be got well.

Preferential, also comprise the pH value conditioning agent of gross weight 0.1%～0.5%, the PH conditioning agent is selected from ammoniacal liquor or organic amine, can select the AMP-95 of U.S. DOW company for use;

Preferential, comprise that also the thickening material of gross weight 0.1%～0.5%, thickening material select the urethane association type for use, as the PU40 of Germany bright icepro company;

Making method of the present invention comprises the steps:

(1) at first aquosity ultraviolet light resin and water-based reactive thinner are added in the cylinder, under agitation add talcum powder, lime carbonate, aerosil then, the back that stirs disperseed 5～15 minutes;

(2) add light trigger, defoamer, disperseed 3～10 minutes;

(3) add sterilant, wetting agent, pH value conditioning agent, thickening material and water, stir, regulate pH value 8～9, adjust viscosity to 60～110KU/25 ℃ and promptly obtain product.

Using method of the present invention can be spraying, also can be roller coating.

Use when of the present invention, note following item:

1. must select for use suitable sand paper to the sheet material sanded before the construction, to obtain fine and smooth surface.

2. this product is needing can to cross UV-light after allowing moisture volatilize fully under normal temperature or the baking condition after the construction.

UV-curable waterborne height of the present invention contains transparent priming admittedly, and following advantage is arranged: solid content height, hardness height, transparent good; Environmental protection, almost tasteless; Direct dilute with water; Ultraviolet light polymerization, short construction period.

Embodiment

Embodiment 1

Raw-material weight per-cent is as follows:

Aquosity ultraviolet light resin CN9245 65%;

Reactive diluent HEMA 5%

Talcum powder (particle diameter is 1000 orders) TP1250 15%

Lime carbonate (particle diameter is 1000 orders) CC1500 10%

Aerosil A200 0.5%

Light trigger RUNTECURE1265 2.0%

Defoamer TEGO810 0.1%

Sterilant K-20 0.2%

Wetting agent TEGO245 0.2%

PH value conditioning agent AMP-95 0.2%

Thickening material PU40 0.2%

Water 1.6%

100％

CN9245 is the aqueous photo-curing resin, and weight contains 100% admittedly;

Concrete making processes is: (1) at first adds CN9245 and HEMA in the cylinder, under agitation adds TP1250, CC1500, A200 then, the back high speed dispersion that stirs 10 minutes;

(2) adding 1265, TEGO810 middling speed were disperseed 5 minutes;

(3) add K-20, TEGO245, AMP-95, PU40 and water, stir, regulate pH value 8～9, adjust viscosity to 100～105KU/25 ℃ and promptly obtain product.

Detected result is as follows:

Solid content: 97.5% GB/T 1725-79 (second method)

Outward appearance: oyster white semi-fluid GB 1727-79

Fineness :≤45um GB/T1724-1979

Sticking power: 1 grade of GB/T9286-1979

Grinability: 320#, 400# all do not have scab phenomenon

Transparency: transparent

Form of construction work: roller coat

Glue spread: 20～30g/m ²

Solidify energy: 150 ± 50mg/cm ²

Embodiment 2

Raw-material weight per-cent is as follows:

Aquosity ultraviolet light resin U-30W 87%;

Reactive diluent HEMA 3%

Talcum powder (particle diameter is 2000 orders) TP1250 5%

Aerosil A200 0.5%

Light trigger RUNTECURE1265 2.0%

Defoamer TEGO810 0.1%

Sterilant K-20 0.2%

Wetting agent TEGO245 0.2%

PH value conditioning agent AMP-95 0.2%

Thickening material PU40 0.2%

Water 1.6%

100％

U-30 is the aqueous photo-curing resin, and weight contains 95% admittedly.

The preparation method is with embodiment 1, adjusts viscosity and gets final product to 65KU/25 ℃.

Detected result is as follows:

Solid content: 92.5% GB/T 1725-79 (second method)

Outward appearance: oyster white fluid G B 1727-79

Fineness :≤45um GB/T1724-1979

Sticking power: 1 grade of GB/T9286-1979

Grinability: 320#, 400# all do not have scab phenomenon

Transparency: very transparent

Form of construction work: spraying

Glue spread: 80～100g/m ²

Solidify energy: 150 ± 50mg/cm ²

Claims (6)

1. the UV-curable waterborne height of woodenware contains admittedly and primes in transparent, it is characterized in that comprising following components in weight percentage:

Aquosity ultraviolet light resin 60%～87%

Water-based response type thinner 3%～10%

Talcum powder 3%～15%

Lime carbonate 0～10%

Aerosil 0.5%～1.0%

Light trigger 1.0%～3.0%

Water 1%～2%

The per-cent sum of said components is 100%.

2. the UV-curable waterborne height of woodenware according to claim 1 contains admittedly and primes in transparent, it is characterized in that the chemical name of said aquosity ultraviolet light resin is the watersoluble polyurethane acrylic acid dispersion.

3. the UV-curable waterborne height of woodenware according to claim 1 contains admittedly and primes in transparent, it is characterized in that said reactive diluent is methacrylic acid-beta-hydroxy ethyl ester (HEMA) or senecioate-hydroxyl ethyl ester (HEA).

4. the UV-curable waterborne height of woodenware according to claim 1 contains admittedly and primes in transparent; it is characterized in that; described light trigger is selected from 2-hydroxy-2-methyl-1-phenyl-1-acetone, as the RUNTECURE1103 of Changzhou Hua Tai company or in 2-hydroxy-2-methyl-1-phenyl-1-acetone and 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide more than one.

5. contain admittedly according to the UV-curable waterborne height of each described woodenware of claim 1～4 and prime in transparent, it is characterized in that, also comprise wetting agent and/or 0.1%～0.5% the pH value conditioning agent and/or 0.1%～0.5% the thickening material of the defoamer of gross weight 0.1%～0.5% and/or 0.1%～0.2% sterilant and/or 0.1%～0.2%.

6. the UV-curable waterborne height of preparation claim 5 described woodenware contains the method for priming in transparent admittedly, it is characterized in that, comprises the steps:

(1) at first aquosity ultraviolet light resin and water-based reactive thinner are added in the cylinder, under agitation add talcum powder, lime carbonate, aerosil then, the back that stirs disperseed 5～15 minutes;

(2) add light trigger, defoamer, disperseed 3～10 minutes;

(3) add sterilant, wetting agent, pH value conditioning agent, thickening material and water, stir, regulate pH value 8～9, adjust viscosity to 60～110KU/25 ℃ and promptly obtain product.