CN104277546A - UV wood lacquer jelly-type transparent earth-invigorating putty and preparation method thereof - Google Patents

Abstract

The invention relates to UV wood lacquer jelly-type transparent earth-invigorating putty and a preparation method thereof. The earth-invigorating putty is composed of the following substances: 35-40 parts of bisphenol A epoxy acrylate, 3-5 parts of a photoinitiator, 0.2-0.5 part of a defoaming agent, 1-2 parts of a wetting dispersant, 10-15 parts of surface area non-processed fumed silica, 30-35 parts of a TPGDA reactive diluent, and 10-15 parts of a TMPTA reactive diluent. The putty disclosed by the invention is purely transparent and can well embody the original wood grains of woods, so that a paint coating of furniture can achieve a better coating effect; and the putty can achieve an effect of instantaneous one-second cured coating through ultraviolet light curing, so that the production efficiency can be greatly improved.

Description

Native putty of a kind of UV wood lacquer transparent benefit of jelly type and preparation method thereof

Technical field

The present invention relates to wood lacquer and mend native putty field, particularly the native putty of the transparent benefit of a kind of UV wood lacquer jelly type.

Background technology

Furniture industry life-time service benefit soil putty mainly traditional solvent-borne benefit soil putty and aqueous putty etc., it is undesirable that the sticking power effect of soil containing a large amount of unintelligible effects of organic-inorganic fillers affect lumber grain, colored film mended by solvent-borne type putty, and pass through manual operation, efficiency is low, cost is high, contaminate environment, affects the health of workmen; Water-based mend native putty application operation water will be waited to volatilize after could film forming, the application operating time is longer.

The transparent Wood putty being exclusively used in woodwork coating is commercially rarely found, and existing product transparency is relatively low, affect the attractive in appearance of woodenware, a kind of environment-friendly type aqueous transparent Wood putty (Authorization Notice No. CN 100577749C) has been invented in Hiachuan Industry Co., Ltd., Shenzhen, benzene emulsion containing 10-80% by weight percentage in component, the filler of 5-20%, the solubility promoter of 0-20%, the wetting agent of 0.1-1.0%, the defoamer of 0.1-1.0, the film coalescence aid of 1.0-2.0, the hydroxyethyl ether cellulose of 0.1-1.0, the thickening material of 0.2-2.0%, the sanitas of 0-2.0%, pH value conditioning agent and the deionized water adding 100% to of 0.1-1.0%, although its putty is transparent, because it is aqueous putty, operating time is longer.

Summary of the invention

For solving the problems of the technologies described above, the invention provides native putty of the transparent benefit of a kind of UV wood lacquer jelly type and preparation method thereof, it is characterized in that, meter comprises by weight: prepolymer 30-40 part, reactive thinner 40-50 part, light trigger 3-5 part, M-5 non-process type aerosil 10-15 part;

Described prepolymer is bisphenol A epoxy acrylate, and as preferably adopting Changxing, Taiwan chemistry 621A-80UV prepolymer, solid content is 99.5%, and outward appearance is transparent liquid, containing 2 functional groups, molecular weight is 25000 dalton; There is the solidification that is swift in response, chemicals-resistant be good, hardness high.

As preferably also comprising wetting dispersing agent 1-2 part, adopting Dutch EFKA4010 wettability dispersion agent, its composition is modified polyurethane, pigment dyestuff and mineral dye cohesion can be prevented.

As preferably also comprising defoamer 0.2-0.5 part, adopting German Bi Ke chemistry BYK141 defoamer, chemical constitution for broken bubble polymkeric substance and siloxane solution, having and good pressing down bubble effect.

Described reactive thinner is the mixture of tripropylene glycol class diacrylate ester activated diluting agent and pentaerythritol triacrylate reactive thinner, its ratio of quality and the number of copies is 2:1-3.5:1, as preferably, described tripropylene glycol diacrylate is reactive monomer, and containing 2 functional groups, described pentaerythritol triacrylate is reactive monomer, is 95-100% containing 3 functional groups, solid content, containing OH hydroxyl bond, sticking power and the toughness of paint film and base material can be increased.

As preferably, described light trigger is that base benzophenone is cracking type free radical photo-initiation to 1-hydroxyl alkane, outward appearance is White crystal body, λ max is at 246nm, 280nm, 330nm, by absorbing the photoemissive ultraviolet quantum of strong ultraviolet lamp, thus initiated polymerization is crosslinked and graft reaction, make interior formation liquid part second solid film.

As optimization, described M-5 non-process type aerosil, for U.S. Cabot CAB-O-SIL@aerosil, be a kind of intermediate surface area non-process type aerosil, can significantly enhance liquid system viscosity, Cabot CAB-O-SIL M-5 has makes liquid system obtain rheology control, solid suspension, the effects such as anti-stream change, can improve enhancement for solid system, are increased the thixotropy of coating by the use of volume, reach completely transparent effect, present g., jelly-like.

The native putty its preparation method of a kind of UV transparent benefit of wood lacquer jelly type, step is as follows:

(1) first reactive thinner tripropylene glycol diacrylate and pentaerythritol triacrylate reactive thinner being added mixing and stirring stirring velocity in cup controls as 800r/min, instill wetting dispersing agent again, instillation is after defoamer stirs, more slowly add 1-hydroxyl alkane base benzophenone light trigger to add stirring and dissolving in cup even; More than dissolve to add again after stirring bisphenol A epoxy acrylate prepolymer under agitation evenly after, stirring velocity is improved and slowly adds M-5 non-process type aerosil again at 2500r/min, add rear stirring and within 90 minutes, namely obtain the native putty of a kind of transparent benefit of novel a kind of UV wood lacquer jelly type;

(2) add rear control rotating speed 2500r/min and disperse 90 minutes, detection paint liquid particle diameter fineness≤45um, paint fluid viscosity: rotational viscosimeter 4# pin tested viscosity is: 800 ± 100maps/25 DEG C, UV wood lacquer compound type transparent putty ultraviolet photo-curing energy: wavelength 280-450nm, solidification energy is 250-350mj/cm2.

The present invention, by absorbing ultraviolet capability film-forming, is impel decomposition of initiator under the irradiation of 260-450nm at ultraviolet wavelength, produces free radical, initiating activity thinner and prepolymer reaction, instantaneous solidification film forming.

Compared with mending native agent with traditional solvent-borne paint render, beneficial effect of the present invention is:

(1) directly the direct application of rough sheet material can be filled and led up on timber element plate;

(2) this product is pure transparent, better can embody timber wood grain originally, have better painting effect;

(3) product is not containing VOC organic volatile, belongs to environmental type coating;

(4) spendable application mode has roller coat, blade coating, obliterating, and can mechanical application circulation painting operation, raising enterprises production efficiency.

Embodiment

The native putty its preparation method of a kind of UV transparent benefit of wood lacquer jelly type, its formula is:

Bisphenol A epoxy acrylate 370g

Wetting dispersing agent 5g

Defoamer 5g

Tripropylene glycol class diacrylate ester activated diluting agent 350g

Pentaerythritol triacrylate reactive thinner 100g

Light trigger 50g

M-5 non-process type aerosil 120g

Its preparation method, has the following steps:

(1) first reactive thinner tripropylene glycol diacrylate 350g and pentaerythritol triacrylate reactive thinner 100g being added mixing and stirring stirring velocity in cup controls as 800r/min, instill wetting dispersing agent 5g again, after instillation defoamer 5g stirs, more slowly add 1-hydroxyl alkane base benzophenone light trigger 50g to add stirring and dissolving in cup even; More than dissolve and to add after bisphenol A epoxy acrylate prepolymer 370g stirs after stirring again, stirring velocity is improved and slowly adds M-5 non-process type aerosil 120g again at 2500r/min, add rear stirring and within 90 minutes, namely obtain the native putty of a kind of transparent benefit of novel a kind of UV wood lacquer jelly type;

(2) add rear control rotating speed 2500r/min and disperse 90 minutes, detection paint liquid particle diameter fineness≤45um, paint fluid viscosity: rotational viscosimeter 4# pin tested viscosity is: 800 ± 100maps/25 DEG C, UV wood lacquer compound type transparent putty ultraviolet photo-curing energy: wavelength 280-450nm, solidification energy is 250-350mj/cm2.

The native putty of the transparent benefit of UV wood lacquer utilizing above-mentioned formula and preparation method to obtain, to the various irregular base material sheet material coating decoration containing the small holes caused by worms that scab, construction technology adopts blade coating, roller coat, obliterating mode, and glue spread is 30g/m ².

UV-lamp solidification can be crossed instantaneously after application, solidification energy is >=260mj/cm2, the coating process test performance of following furniture application can be carried out after solidification:

Sequence number	Operation	Explanation
			1	Sheet material dedusting	Sand paper: 240#
2	UV tinting material roller coat is painted	Glue spread: 15 g/m2
			3	Ultraviolet photo-curing	Solidification energy: >=260mj/cm
4	UV compound type transparent putty priming paint	Glue spread: 30 g/m2
			5	Mercury lamp half lamp semicure	Solidification energy: >=60mj/cm exempts from sanding
6	UV transparent priming	Glue spread: 15g/m2
			7	Mercury lamp 1 lamp solidifies	Solidification energy: >=120mj/cm 240# sand paper sanding
8	UV transparent priming	Glue spread: 15 g/m2
			9	Mercury lamp half lamp solidifies	Solidification energy: >=60mj/cm exempts from sanding
10	UV matte varnish	Glue spread: 15 g/m2
			11	Mercury lamp 2 lamp all solidstate	Solidification energy: >=200mj/cm

Above roller coat coating process respectively to 3 kinds of applications cross UV wood lacquer jelly type transparent mend your timber of soil element plate unify coating process test, film forming after application sheet material and the traditional solvent-borne sheet material of mending native putty application do following performance test:

Test performance	The transparent benefit soil of roller coat UV wood lacquer jelly type	The transparent benefit soil of blade coating UV wood lacquer jelly type	The transparent benefit soil of obliterating UV wood lacquer jelly type	Traditional solvent-borne coloring and coating model
					Appearance of film	Lumber grain clear and natural	Lumber grain clear and natural	Lumber grain clear and natural	Lumber grain is sent out dim
(pencil hardness)	>=2H paint film no marking	>=2H paint film no marking	>=2H paint film no marking	>=2H paint film no marking
					Sticking power/level (hundred lattice)	5B one-level	5B one-level	5B one-level	4B secondary
Paint film water tolerance	72h is non-foaming, wrinkle resistant, do not come off	72h is non-foaming, wrinkle resistant, do not come off	72h is non-foaming, wrinkle resistant, do not come off	72h is non-foaming, wrinkle resistant, do not come off
					Film acidproof (25%H2SO4)	48h is non-foaming, wrinkle resistant, do not come off	48h is non-foaming, wrinkle resistant, do not come off	48h is non-foaming, wrinkle resistant, do not come off	48h is non-foaming, wrinkle resistant, do not come off
Weathering resistance is tested	72 hours without loss of gloss, variable color, efflorescence, crackle, bubble	72 hours without loss of gloss, variable color, efflorescence, crackle, bubble	72 hours without loss of gloss, variable color, efflorescence, crackle, bubble	72 hours without loss of gloss, variable color, efflorescence, crackle, bubble

Above-mentioned embodiment is intended to illustrate that the present invention can be professional and technical personnel in the field and realizes or use; modifying to above-mentioned embodiment will be apparent for those skilled in the art; therefore the present invention includes but be not limited to above-mentioned embodiment; any these claims or specification sheets of meeting describes; meet and principle disclosed herein and novelty, the method for inventive features, technique, product, all fall within protection scope of the present invention.

Claims (8)

1. the native putty of the transparent benefit of UV wood lacquer jelly type, is characterized in that, meter comprises by weight: prepolymer 30-40 part, reactive thinner 40-50 part, light trigger 3-5 part, M-5 non-process type aerosil 10-15 part;

Described prepolymer is bisphenol A epoxy acrylate;

Described reactive thinner is the mixture of tripropylene glycol class diacrylate ester activated diluting agent and pentaerythritol triacrylate reactive thinner, and its ratio of quality and the number of copies is 2:1-3.5:1;

Described M-5 non-process type aerosil is CAB-O-SIL ^@aerosil.

2. the native putty of the transparent benefit of a kind of UV wood lacquer jelly type according to claim 1, it is characterized in that: also comprise wetting dispersing agent 1-2 part, its composition is modified polyurethane.

3. the native putty of the transparent benefit of a kind of UV wood lacquer jelly type according to claim 1, is characterized in that: also comprise defoamer 0.5-0.5 part, and its composition is broken bubble polymkeric substance and siloxane solution.

4. the native putty of the transparent benefit of a kind of UV wood lacquer jelly type according to claim 1, it is characterized in that Changxing, described bisphenol A epoxy acrylate prepolymer Taiwan chemistry 621A-80UV type prepolymer, solid content 99.5%, outward appearance is transparent liquid, containing 2 functional groups, molecular weight is 25000 dalton.

5. the native putty of the transparent benefit of a kind of UV wood lacquer jelly type according to claim 1, is characterized in that described tripropylene glycol class diacrylate ester activated diluting agent is that reactive monomer contains 2 functional groups.

6. the native putty of the transparent benefit of a kind of UV wood lacquer jelly type according to claim 1, is characterized in that described pentaerythritol triacrylate reactive thinner is that reactive monomer contains 3 functional groups, solid content is 95-100%, containing hydroxyl bond.

7. the native putty of the transparent benefit of a kind of UV wood lacquer jelly type according to claim 1, it is characterized in that described light trigger is 1-hydroxyl alkane base benzophenone, its outward appearance is White crystal body, and λ max is 246nm, 280nm, 330nm.

8. prepare the method for the native putty of the transparent benefit of a kind of UV wood lacquer jelly type as claimed in claim 1, it is characterized in that described method comprises the steps:

(1) first reactive thinner tripropylene glycol diacrylate and pentaerythritol triacrylate reactive thinner being added mixing and stirring stirring velocity in cup controls as 800r/min, instill wetting dispersing agent again, instillation is after defoamer stirs, more slowly add 1-hydroxyl alkane base benzophenone light trigger to add stirring and dissolving in cup even; More than dissolve to add again after stirring bisphenol A epoxy acrylate prepolymer under agitation evenly after, stirring velocity is improved and slowly adds M-5 non-process type aerosil again at 2500r/min, add rear stirring and within 90 minutes, namely obtain the native putty of a kind of transparent benefit of novel a kind of UV wood lacquer jelly type;

(2) add rear control rotating speed 2500r/min and disperse 90 minutes, detection paint liquid particle diameter fineness≤45um, paint fluid viscosity: rotational viscosimeter 4# pin tested viscosity is: 800 ± 100maps/25 DEG C, UV wood lacquer compound type transparent putty ultraviolet photo-curing energy: wavelength 280-450nm, solidification energy is 250-350mj/cm2.