CN102850916B - Unsaturated polyester prime coat and preparation method thereof - Google Patents

Abstract

The invention provides an unsaturated polyester prime coat, which comprises a main agent, a solvent, a promoter, and an initiator, wherein the main agent comprises, by weight, 30-50 parts of an unsaturated polyester resin, 30-50 parts of a filler and a pigment, 3-5 parts of a grinding agent, 3-5 parts of styrene, 0.1-0.2 part of an antifoaming agent, 0.1-0.2 part of a leveling agent, 0.2-0.6 part of an aliphatic polyurethane soft resin, and 0.2-0.5 part of an anti-sedimentation agent. According to the prime coat of the present invention, the unsaturated polyester prime coat is added with the aliphatic polyurethane soft resin, wherein the aliphatic polyurethane soft resin acts with the dicyclopentadiene unsaturated polyester resin, and forms stable hydrogen bonds with the double decoration panel, such that the problem of poor adhesion of the unsaturated polyester paint on the double decoration panel can be effectively solved.

Description

A kind of unsaturated polyester priming paint and preparation method thereof

Technical field

The invention belongs to coating composition field, be specially a kind of coating composition containing macromolecular compound.

Background technology

The performance of water-borne coatings, photo-cured coating was also in the middle of being constantly familiar with in recent years, and unsaturated polyester coating is because of its excellent property, obtains swift and violent development.Not only improve sagging performance with the priming paint of unsaturated polyester resin preparation, also have good fullness ratio, hardness, sanding property, good time of drying, particularly it is highly filled is that bicomponent polyurethane coating can not match in excellence or beauty.Unsaturated polyester coating can keep the business of more than 50% to increase every year substantially.The advantage of unsaturated polyester varnish is a lot, and not only color is very abundant, and film thickness is large, spray two or three time, and can completely the material of basic unit be covered, so do furniture can in density board direct brush Polyester Paint just passable, not high to the requirement of base material.

The wood lacquer unsaturated priming paint existing clear end and the large class of white background two.No matter but if be that based white primer or clear priming paint act directly on double-veneer, the problem of sticking power all can be produced.Easy embrittlement when unsaturated polyester varnish is stressed, not easily repairs once paint film is impaired.

Summary of the invention

The object of this invention is to provide a kind of unsaturated polyester priming paint, suitably select the composition of priming paint, make this priming paint and double-veneer form stable hydrogen bond, effectively solve the problem of unsaturated polyester varnish poor adhesive force on double-veneer.

Another object of the present invention proposes a kind of method preparing described unsaturated polyester priming paint.

The present invention's the 3rd object is the method proposing the described unsaturated polyester priming paint of application.

The concrete technical scheme realizing above-mentioned purpose of the present invention is:

A kind of unsaturated polyester priming paint, be made up of host, solvent, promotor, initiator, described host comprises the composition of following weight part:

Preferably, described host comprises the composition of following weight part:

Wherein, described solvent is vinylbenzene, and add-on is 21 ~ 28 weight parts.

Wherein, described promotor to be cobalt naphthenate weight percentage be 5 ~ 8% ethyl acetate solution, add-on is 1.5 ~ 3 weight parts.

Wherein, described initiator to be methylethyl ketone peroxide weight percentage be 45 ~ 55% dimethyl phthalate solution, add-on is 1.5 ~ 3 weight parts.

Wherein, described unsaturated polyester resin is dicyclopentadiene type unsaturated polyester resin.The fatty urethane supple resin added and the effect of dicyclopentadiene class unsaturated polyester resin, form stable hydrogen bond with double-veneer, effectively can solve the problem of unsaturated polyester varnish poor adhesive force on double-veneer.

Wherein, described filler is one or more in talcum powder, transparent powder and calcium carbonate, and add-on is 30 ~ 50 weight parts; Described pigment is Rutile type Titanium Dioxide, and add-on is 0 ~ 10 weight part; Described polishing agent is Zinic stearas; Described anti-settling agent is aerosil and/or organobentonite.The preferred water-ground limestone of calcium carbonate is as calcite, marble, Wingdale grind and form by natural carbonate mineral.Preferred order number is 800 ~ 1000 object talcum powder and water-ground limestone powder.Described transparent powder is the quartzite containing certain crystal water, and preferred order number is 1000 object transparent powders.

Wherein, described defoamer is organic silicon modified by polyether defoamer and/or non-organic silicon defoamer; Described flow agent is one or more in fluorine-carbon modified polyacrylate flow agent, polyether modified silicon oil flow agent or acrylic acid esters co-polymer flow agent.

Prepare a method for unsaturated polyester priming paint of the present invention, comprise step:

1) be mixed in proportion unsaturated polyester resin, defoamer, flow agent, fatty urethane supple resin, the vinylbenzene of 20 ~ 30% part by weight, stir 5 ~ 15min;

2) add filler, anti-settling agent, pigment, polishing agent in proportion, be dispersed to fineness≤30 μm;

3) vinylbenzene of 30% ~ 60% weight is added;

4) residual styrene is added, obtained host;

5) host, solvent, promotor, initiator are packed separately separately.

Described dispersion be carry out pulverizing for the raw material of different viscosity pulpous state, disperse, emulsification, mixing operation, running up by equipment, strong shearing at a high speed, shock, pulverizing, dispersion are carried out to material, reaches the function of rapid mixing, dissolving, dispersion, refinement.

The application of unsaturated polyester priming paint in surface-coated that the present invention proposes, it is mixed host, solvent, promotor, initiator, is sprayed on the surface of parts.Because can crosslinking reaction be there is after each component mixing, to spray within the 30min time after mixing.

Beneficial effect of the present invention is:

In unsaturated polyester priming paint, with the addition of fatty urethane supple resin, itself and the effect of dicyclopentadiene class unsaturated polyester resin, form stable hydrogen bond with double-veneer, effectively can solve the problem of unsaturated polyester varnish poor adhesive force on double-veneer.This priming paint can be painted on double-veneer, does not need to spray other transition priming paint etc., and the paint film formed can provide extraordinary sticking power, has excellent glossiness, sanding property, sticking power, levelling property, fully satisfies the demands of consumers.

Embodiment

Following case study on implementation for illustration of the present invention, but is not used for limiting the scope of the invention.In embodiment, as do not specialized, equipment used is this area conventional equipment.

Dicyclopentadiene type unsaturated polyester resin used in embodiment is the JD3309 unsaturated polyester resin that Shenzhen Zhan Chen group produces.In embodiment, defoamer used is the BYK8801 of German BYK company production or EFKA2720, EFKA8209 of BASF Aktiengesellschaft's production.In embodiment, fatty urethane supple resin used is the NeoRez U-335 of DSM Jie Likang.In embodiment, flow agent used is BYK358N, the EFKA3777 of BASF Aktiengesellschaft's production, the HX-3130 of China's Chemical Group that German BYK company produces.Anti-settling agent is aerosil or organobentonite, the wilkinite CD-1 that A-200, De Qian Chemical Co., Ltd. selecting German Degussa company to produce produces.Filler is talcum powder, water-ground limestone, is selected from 1000 order talcum powder, the TP1250 talcum powder of Guilin ultrafine powder company limited production, the CC-800 water-ground limestone of Jiangxi Guang Yuan chemical industry limited liability company production that the magnificent talcum development corporation, Ltd. of LONGSHENG IN GUANGXI produces.Pigment is Rutile type Titanium Dioxide, and the CR595 that R-706, Ke Meiji pigment company limited of Du Pont selecting Dupont Chemical Group to produce produces or Sichuan Lomon Titanium Industry Co., Ltd. produce R-996.Polishing agent is Zinic stearas, is selected from the PLB of BT1819, BT1818 or Huan Qi Chemical Co., Ltd. production that hundred Li He Chemical Co., Ltd.s produce.

The vinylbenzene (analytical pure) that vinylbenzene is produced purchased from Dongfang Chemical Plant, Beijing, The East Chemical Plant,Beijing.

Promotor to be cobalt naphthenate weight percentage be 6% cobalt naphthenate-ethyl acetate solution, be the EC-8 of the good plastic cement company limited in Shanghai ten thousand; Initiator to be methylethyl ketone peroxide weight percentage be 50% methylethyl ketone peroxide-dimethyl phthalate solution, be the 808-A of the good plastic cement company limited in Shanghai ten thousand.

Embodiment 1:

A clear priming paint on double-veneer, described priming paint comprises host, solvent, promotor, initiator four components:

(1) host:

By 50kg dicyclopentadiene type unsaturated polyester resin (the JD3309 unsaturated polyester resin of Shenzhen Zhan Chen group), 1kg vinylbenzene and 0.2kg defoamer (German BYK company, BYK8801), 0.2kg acrylic acid esters co-polymer flow agent (German BYK company, BYK358N), 0.5KG fatty urethane supple resin (DSM Jie Likang NeoResins, NeoRez U-335) mixes, and stirs 10min;

(2) 33kg transparent powder (Hou Sheng Chemical Co., Ltd. of Foshan City is added, TM-2500), 7kg talcum powder (the magnificent talcum development corporation, Ltd. of LONGSHENG IN GUANGXI, 1000 orders), 0.3kg aerosil anti-settling agent (German Degussa company, A-200), 4.8kg Zinic stearas polishing agent (hundred Li He Chemical Co., Ltd.s, BT1819), fineness≤30 μm are dispersed to high speed dispersor (Yixing City lean machinery GFJ-B-75Kw);

(3) add the vinylbenzene of 2kg, be uniformly dispersed;

(4) add 1kg vinylbenzene, stir; Independent packaging.

Solvent: 25kg vinylbenzene, packs separately;

Promotor: 2kg cobalt iso-octoate promotor (the good plastic cement company limited in Shanghai ten thousand produces EC-8), packs separately;

Initiator: 2kg methylethyl ketone peroxide initiator (the good plastic cement company limited in Shanghai ten thousand produces 808-A), packs separately.

The made unsaturated polyester priming paint of the present embodiment does not add pigment, is priming paint clearly.

Embodiment 2

A based white primer on double-veneer, this priming paint comprises following host, solvent, promotor, initiator four components:

The preparation of host:

By 40kg allyl ethers modification dicyclopentadiene type unsaturated polyester resin (Shenzhen Zhan Chen group, JD3309), 1kg vinylbenzene and 0.1kg non-organic silicon defoamer (BASF Aktiengesellschaft, EFKA2720), the fluorine-carbon modified polyacrylate flow agent (BASF Aktiengesellschaft of 0.2kg, EFKA3777), 0.3KG fatty urethane supple resin mixes, and stirs 15min;

(2) 20kg talcum powder (Guilin ultrafine powder company limited is added, TP1250), 20kg water-ground limestone (Jiangxi Guang Yuan chemical industry limited liability company, CC-800), 0.4kg aerosil anti-settling agent, 10kg pigment rutile titanium white powder (Dupont Chemical Group, Du Pont R-706), 5kg polishes agent Zinic stearas, is dispersed to fineness≤30 μm;

(3) add the vinylbenzene of 2kg, be uniformly dispersed;

(4) add 1kg vinylbenzene, stir, pack separately;

Solvent: 25kg vinylbenzene, packs separately;

Promotor: 2kg cobalt iso-octoate promotor, packs separately;

D component: 2kg methylethyl ketone peroxide initiator, packs separately.

Embodiment 3

Unsaturated polyester priming paint, comprises host, solvent, promotor, initiator four components:

The preparation of host:

(1) by 45kg allyl ethers modification dicyclopentadiene type unsaturated polyester resin (Shenzhen Zhan Chen group, JD3309), 1kg vinylbenzene and 0.2kg non-organic silicon defoamer, 0.1kg fluorine-carbon modified polyacrylic ester stream flow agent, 0.3Kg fatty urethane supple resin mix, and stirs 10min;

(2) add 20kg talcum powder, 18kg water-ground limestone, 0.4kg aerosil anti-settling agent, 10kg rutile titanium white powder pigment, 5kg Zinic stearas polishing agent, be dispersed to fineness≤30 μm;

(3) add the vinylbenzene of 2kg, be uniformly dispersed;

(4) add 1kg vinylbenzene, stir, pack separately;

Solvent: 25kg vinylbenzene, packs separately;

Promotor: 2kg cobalt iso-octoate promotor, packs separately;

Initiator: 2kg methylethyl ketone peroxide initiator, packs separately.

Embodiment 4

Carry out Performance Detection to priming paint obtained in embodiment 1,2, detected result is as table 1.

Table 1: the performance index of unsaturated polyester priming paint

As shown in Table 1, the priming paint that the present invention obtains all meets every GB examination criteria.

Embodiment 5

With embodiment 1 prepare the clear priming paint of attachment directly spray, and on priming paint coated matte finish paint, its technical process is as follows:

1, material process: material is double-veneer, workpiece is timber.By the cotton wiped clean of the dust on sheet material.

2, spray clear priming paint: mixed by each composition of the clear priming paint of made for embodiment 1 unsaturated polyester, it adjusts oil viscosity to be 20 seconds (rock field-2# cup, 25 DEG C), sprays two times, totally two " ten " words (right-angled intersection method), 8 hours time of drying.

3, sanding: along the grain sand milling is smooth, smooth with 400# sand paper.

4, coated matte clear finish: after matte varnish (Shenzhen Zhan Chen group) is adjusted oil, with the spray gun spraying of 2.0mm bore, spray two " ten " words, dry 36 hours.

Test result is as shown in table 2.

Test result after table 2 sprays

As shown in Table 2, solidifying priming paint performance of the present invention is good, its appearance of film and excellence thereof, and sticking power can reach 1 grade of level.

Embodiment 6

With embodiment 2 prepare unsaturated polyester priming paint directly spray, and on priming paint coated matte white finish paint, its technical process is as follows:

1, material process: material is double-veneer, workpiece is timber.By the cotton wiped clean of the dust on sheet material.

2, spraying attachment based white primer: mixed by each composition of made for embodiment 2 unsaturated polyester white primer, it adjusts oil viscosity to be 20 seconds (rock field-2# cup, 25 DEG C), sprays two times, totally two " ten " words, 8 hours time of drying.

3, sanding: along the grain sand milling is smooth, smooth with 400# sand paper.

4, coated matte white finish paint: after matte white finish (Shenzhen Zhan Chen group) is adjusted oil, directly with the spray gun spraying of 2.0mm bore, sprays two " ten " words, dry 36 hours.

Test result is as shown in table 3.

Test result after table 3 sprays

As shown in Table 3, solidifying priming paint performance of the present invention is good, its appearance of film performance and excellence thereof, and sticking power can reach 1 grade of level.

Although above with general explanation, embodiment and test, the present invention is described in detail, and on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, all belong to the scope of protection of present invention.

Claims (3)

1. a unsaturated polyester priming paint, is made up of host, solvent, promotor, initiator, it is characterized in that, described host is grouped into by the one-tenth of following weight part:

Wherein, described solvent is vinylbenzene, and add-on is 21 ~ 28 weight parts;

Wherein, described promotor is the ethyl acetate solution of cobalt iso-octoate weight percentage 5 ~ 8%, and add-on is 1.5 ~ 3 weight parts;

Wherein, described initiator to be methylethyl ketone peroxide weight percentage be 45 ~ 55% dimethyl phthalate solution, add-on is 1.5 ~ 3 weight parts;

Wherein, described unsaturated polyester resin is dicyclopentadiene type unsaturated polyester resin;

The preparation method of described unsaturated polyester priming paint comprises step:

1) be mixed in proportion unsaturated polyester resin, defoamer, flow agent, fatty urethane supple resin, the vinylbenzene of 20 ~ 30% part by weight, stir 5-15min;

2) add filler, anti-settling agent, pigment, polishing agent in proportion, be dispersed to fineness≤30 μm;

3) vinylbenzene of 30% ~ 60% part by weight is added;

4) residual styrene is added, obtained host;

5) host, solvent, promotor, initiator are packed separately separately.

2. unsaturated polyester priming paint as claimed in claim 1, is characterized in that, described filler is one or more in talcum powder, transparent powder and calcium carbonate, and add-on is 30 ~ 50 weight parts; Described pigment is Rutile type Titanium Dioxide, and add-on is 0 ~ 10 weight part; Described polishing agent is Zinic stearas; Described anti-settling agent is aerosil and/or organobentonite.

3. unsaturated polyester priming paint as claimed in claim 1, it is characterized in that, described defoamer is organic silicon modified by polyether defoamer and/or non-organic silicon defoamer; Described flow agent is one or more in fluorine-carbon modified polyacrylate flow agent, polyether modified silicon oil flow agent or acrylic acid esters co-polymer flow agent.