CN106700875A - Waterborne chemical-milling-protection strippable coating and preparing method thereof - Google Patents

Waterborne chemical-milling-protection strippable coating and preparing method thereof Download PDF

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CN106700875A
CN106700875A CN201611205160.5A CN201611205160A CN106700875A CN 106700875 A CN106700875 A CN 106700875A CN 201611205160 A CN201611205160 A CN 201611205160A CN 106700875 A CN106700875 A CN 106700875A
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byk
milling
waterborne
water
aqueous
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CN106700875B (en
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吴明霞
李清材
于建龙
滕志春
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North Paint and Coatings Industry Research and Design Institute
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F287/00Macromolecular compounds obtained by polymerising monomers on to block polymers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/20Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
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    • C09D7/61Additives non-macromolecular inorganic
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/65Additives macromolecular
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/014Additives containing two or more different additives of the same subgroup in C08K
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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Abstract

The invention discloses a waterborne chemical-milling-protection strippable coating and a preparing method thereof. The waterborne chemical-milling-protection strippable coating is prepared from 16%-25% of waterborne dispersion, 20%-30% of waterborne polyurethane strippable resin, 6%-8% of waterborne polyester-polyurethane strippable resin, 0.5%-1.5% of waterborne silicone oil, 40%-45% of slurry, 0.3%-1% of an antifoaming agent, 4%-10% of deionized water and 2%-6% of a thickening agent. The waterborne dispersion is prepared from acrylic-ester-modified SBS resin and C5 hydrogenated petroleum resin in a compounded mode, and the acrylic-ester-modified SBS resin is obtained through waterborne acrylic-ester-modified SBS resin. According to the waterborne chemical-milling-protection strippable coating and the preparing method, the successful waterborne effect of SBS thermoplastic elastomer in the chemical-milling-protection coating is achieved, the prepared chemical-milling-protection coating has the excellent water resistance and the excellent alkali resistance, the problems that the waterborne strippable resin is poor in water resistance, and the adhesiveness of the waterborne strippable resin is poor in chemical-milling liquid, and the waterborne effect of the chemical-milling-protection coating is achieved.

Description

A kind of aqueous milling protection stripping lacquer and preparation method thereof
Technical field
The present invention relates to paint field, and in particular to a kind of aqueous milling protection stripping lacquer and preparation method thereof.
Background technology
Chemistry milling processing (abbreviation milling) is to surface of workpiece by chemical solution (acid solution, alkaline solution) A kind of process technology of dissolving, i.e., using the method processing workpiece of chemolysis.Compared with machining process, milling technique Simply, quickly, the particularly big thin material of area can only can be just processed speed using chemistry milling.
Milling protective coating is mainly a kind of temporary protective coat during chemistry milling, plays in process Temporary transient protective effect, removes the protective layer again after the completion of milling operation, be mainly used in the chemistry milling of aluminium alloy, titanium alloy Processing, the processing of high rigidity metal, the artistic products engraving of the anodization, plating and complex process of aluminium alloy processes provisional guarantor Shield, it may also be used for the anti-chemical corrosion masking protection in coated article face, or as preventing from scratching scratch in instrument surface, plant equipment Interim protection field.
Water resistance and chemical resistance are always the problem that water paint is difficult to capture, and milling protective coating is being constructed and made Paint film is generally required during good water resistance and chemical resistance.The water resistance of existing commercially available aqueous stripping lacquer and Chemical resistance is poor, and in the water after long-term immersion, adhesive force and tensile strength significantly decline, and tack is poor, and film is from base material Surface departs from, and loses the protection to base material.Therefore, a kind of low VOC emission is prepared, environment-friendly, water resistance and chemical resistance are good, Smaller on adhesive force and tensile strength influence after long period of soaking, the good aqueous milling protective coating of fissility turns into milling and protects painting Expect the Main way of future development.
The chemistry milling protective coating for using both at home and abroad at present is solvent based coating, mainly there is external Henkel KGaA TURCO5580G, the AC-850 of AC companies of the U.S. and the HX-150 of domestic North Paint & Coating Industry Research and Design Insitute of China Haohua Chemical (Group) Corporation (HX-500) chemistry milling protective coating, these existing chemistry milling protective coatings are all often using toluene, dimethylbenzene, tetrachloro The non-environmental protection type organic solvent such as ethene is used as diluent, and its high cost, smell is big, and environmental pollution is serious, and long-term use is to applying Each organ of body of work person causes major injury.
The content of the invention
It is an object of the invention to provide a kind of aqueous milling protection stripping lacquer and preparation method thereof, the milling protective coating With excellent water resistance and alkali resistance, solve it is aqueous can peelable resin poor water resistance and tack difference is asked in chemical milling solution Topic, realizes milling protective coating Water-borne modification.
To reach above-mentioned purpose, main technical schemes of the invention are as follows:
A kind of aqueous milling protection stripping lacquer, including following component, by mass percentage:
The water-borne dispersions are by acrylate modified SBS resins and C5Hydrogenated petroleum resin is compounded and obtained, and is specifically included Following component, by mass percentage:
Wherein, the acrylate modified SBS resins include following component, by mass percentage:
The formula of the slurry is, by mass percentage:
Wherein, described wetting dispersing agent is at least one in BYK-151, BYK-333, BYK-154, BYK-2012.
Described levelling agent is at least one in BYK-380N, BYK-420, BYK-425, BYK-381.
Preferably, described defoamer be BYK-028, BYK-024, BYK-011, BYK-094BYK-1711 at least It is a kind of.
Preferably, described thickener is at least one in RM-2020, BYK-425.
Again, the emulsifying agent in the water-borne dispersions is emulsifying agent CO436, is commercial industrial product.
Preferably, the mixed solvent in the acrylate modified SBS resins is in hexamethylene, butanone, cyclohexanone, toluene At least one.
Preferably, the initiator in the acrylate modified SBS resins is benzoyl peroxide or azodiisobutyronitrile.
Heretofore described aqueous polyurethane can peelable resin, waterborne polyester polyurethane can peelable resin be commercially available industrial goods.
Further, the preparation method of acrylate modified SBS resins of the present invention, gets the raw materials ready according to above-mentioned formula, its Mainly comprise the following steps:SBS resins are uniformly dissolved into 60~65% mixed solvent, are added in reaction system, It is warming up to 80 ± 5 DEG C;In the case where system flows back, to dropwise addition methyl methacrylate, butyl acrylate, methyl-prop in system The mixed liquor of olefin(e) acid, initiator and remaining mixed solvent, time for adding is controlled in 3h ± 10min;Insulation 1h after being added dropwise completely ± 10min, is cooled to less than 30 DEG C filtering and dischargings, obtains final product acrylate modified SBS resins of the invention.
The preparation method of water-borne dispersions of the present invention, gets the raw materials ready according to above-mentioned formula, and it mainly comprises the following steps: By C5Hydrogenated petroleum resin is dissolved in toluene, the acrylate modified SBS resins that addition is prepared, and is warming up to 80 ± 5 DEG C, is obtained To oiliness mixed system;Emulsifying agent is distributed in the deionized water that temperature is 90 ± 5 DEG C, an emulsifier water prose style free from parallelism is obtained; Under the rotating speed at least stirring condition of 3000r/min, an emulsifier water prose style free from parallelism is added drop-wise in oiliness mixed system, time for adding control System emulsifier water prose style free from parallelism temperature during 30 ± 5min, dropwise addition is maintained at 90 ± 5 DEG C, continues in rotating speed at least after dripping Stirred under conditions of 3000r/min, filtering and discharging obtains final product water-borne dispersions of the invention.
The preparation method of slurry of the present invention, is formulated gets the raw materials ready as described above, and it mainly comprises the following steps:By face Filler (i.e. white carbon, titanium dioxide, talcum powder, kaolin and bentonite) and auxiliary agent (wetting dispersing agent and levelling agent) are separately added into To in quick worker's bottle, deionized water and bead are added, grinding distribution is to obtain slurry of the invention in quick worker's disperse mill Material.
The preparation method of aqueous milling protective coating of the present invention, is formulated gets the raw materials ready as described above, and it mainly includes Following steps:By aqueous polyurethane can peelable resin, waterborne polyester polyurethane can peelable resin, water-borne dispersions, slurry, deionized water It is added in beaker with aqueous silicone oil, stirs 30 ± 5min, adds defoamer to continue to stir 30 ± 5min, in rotating speed at least Working viscosity required for dropwise addition thickener reaches under the stirring condition of 700r/min, continuation 20 ± 5min of stirring, filtering and discharging, Obtain final product aqueous milling protection stripping lacquer.
The present invention has synthesized a kind of water resistance and the good hydrophilic acrylic of alkali resistance for the requirement of chemistry milling processing Ester modified SBS resins, the acrylate modified SBS resins and C5Hydrogenated petroleum resin compounding prepares water-borne dispersions.Water Property dispersion and strong alkali resistance it is aqueous can peelable resin compounding to be prepared for water resistance, alkali resistance good, and long period of soaking is to coating Tack, the anti-intensity effect that rises are smaller, it is adaptable to the aqueous milling protection stripping lacquer of chemistry milling protection temporarily.
The present invention uses hydrophilic acrylate modified SBS resins, successfully accesses hydrophilic radical in SBS resins, The bridge of oleaginous system and water-based system is made, so as to realize and C5Hydrogenated petroleum resin compounding prepares water-borne dispersions. Gained water-borne dispersions can improve it is aqueous can peelable resin water resistance and alkali resistance, and improve aqueous stripping lacquer in the hot water Tensile strength after long period of soaking and the tack with base material, most milling protective coating successfully Water-borne modification at last, and guaranteeization The carrying out of miller skill.
Beneficial effects of the present invention:
1) present invention successfully prepares hydrophilic acrylate modified SBS trees using acrylate modified SBS resins Fat, so as to oleaginous system and water-based system be combined, makes water resistance and alkali resistance in aqueous peelable resin system be improved, and Successfully by the SBS thermoplastic elastomer (TPE)s success Water-borne modification in milling protective coating, and then had using water replacement cheap and easy to get Machine solvent, reduces the drawbacks of because of VOC emission environmental pollution, environmentally friendly aqueous milling protection has successfully been obtained peelable Coating.
2) present invention uses C5Hydrogenated petroleum resin compounds acrylate modified SBS resin-mades for water-borne dispersions, carries It is high it is aqueous can peelable resin tensile strength and adhesive force, make paint film not easy to break when peeling off, and during milling, it is to avoid Due in buck long-term immersion decline paint film adhesion and cause milling while " during race " phenomenon generation, in milling plus The grazing on milling side is ensure that during work.
Specific embodiment
Technical scheme is described in further detail below in conjunction with specific embodiment, but present disclosure is not limited In this.
Embodiment and the raw material used by comparative example are except being technical grade commercially available product in the present invention (specialty goods is otherwise noted).
The present embodiment demonstrates acrylate modified SBS resins and C5The water-borne dispersions and water of hydrogenated petroleum resin compounding Property milling protect stripping lacquer preparation.
Embodiment 1
(1) preparation of acrylate modified SBS resins:With 1:The mixing of 1 proportions 100g hexamethylenes and butanone is molten Agent, is added to 6.0g SBS resins stirring (rotating speed is 700r/min) in the there-necked flask equipped with 60.0g mixed solvents and is allowed to Dissolving, heats to 75 DEG C, and system starts backflow.35.0g methyl methacrylates, 57.0g third are separately added into beaker Olefin(e) acid butyl ester, 1.4g methacrylic acids, 0.60g initiators benzoyl peroxide and residue 40.0g mixed solvents, after stirring To being slowly added dropwise in the there-necked flask equipped with SBS resins, time for adding is 3h.Insulation 1h after being added dropwise completely, cooling is filtered out Material, that is, obtain acrylate modified SBS resins.
(2) acrylate modified SBS resins and C5The preparation of the water-borne dispersions of hydrogenated petroleum resin compounding:Take 72.0g C5Hydrogenated petroleum resin is dissolved in 90.0g toluene, is stirred, the acrylate modified SBS resins 23.0g that addition makes, Heating stirring makes whole system temperature be increased to 80 DEG C, obtains oiliness mixed system.25.0g emulsifying agents CO436 is distributed to In the deionized water of 90 DEG C of 140.0g, heat emulsifier dispersion is obtained.In the condition with rotating speed as 3200r/min high-speed stirreds The lower emulsifier dispersion by heat is slowly added drop-wise in the oiliness mixed system of heat (this process 80 DEG C of system temperature of holding is constant), Time for adding is 25min, with 3500r/min high-speed stirreds 20 minutes after dripping, is cooled to 30 DEG C, and filtering and discharging obtains Acrylate modified SBS resins and C5The water-borne dispersions of hydrogenated petroleum resin compounding.
(3) preparation of slurry:Quick worker bottle in sequentially add 5.0g white carbons, 5.0g titanium dioxides, 20.0g talcum powder, 28.0g kaolin, 0.9g bentonites, 40.0g deionized waters, are stirring evenly and then adding into 0.3g BYK-381,0.8g BYK-151 56.0g beades are stirring evenly and then adding into, quick worker's bottle are put into and are disperseed 2h in quick worker's disperse mill, filtering obtains slurry.
(4) preparation of stripping lacquer is protected in aqueous milling:Taking 28.0g aqueous polyurethanes respectively can peelable resin (road profit chemistry Technology Co., Ltd.), 6.0g waterborne polyesters polyurethane can peelable resin (the lucky Chemical Co., Ltd. in Zhuhai), the aqueous silicone oil of 0.5g, The acrylate modified SBS resins of 18.0g and C5The water-borne dispersions of hydrogenated petroleum resin compounding are added to equipped with 4.0g deionizations In the beaker of water water, stirring (rotating speed is 700r/min) is uniform, adds 41.0g slurries, continues to stir 20min, adds 0.5g After BYK-028 stirrings (rotating speed is 700r/min) 20min, (10~15d/min of rate of addition) thickener RM- is slowly added dropwise 2020, when adding 2.0g thickeners RM-2020 just to can be good at implementing doctor blade process, continue to stir (rotating speed is 700r/min) 10min, filtering and discharging obtains Water-borne modification milling protection stripping lacquer.
The present embodiment prepares the performance test results of the aqueous milling protection stripping lacquer of gained referring to table 1.
Embodiment 2
(1) preparation of acrylate modified SBS resins:With hexamethylene and cyclohexanone with 3:4 proportions 10.0Kg is mixed 0.6Kg SBS Petropols are added to stirring (rotating speed 800r/min) in the reactor equipped with 7.0Kg mixed solvents by bonding solvent It is allowed to dissolve, heats to 75 DEG C, system starts backflow.Be separately added into beaker 3.8Kg methyl methacrylates, 5.4Kg butyl acrylates, 0.15Kg methacrylic acids, 0.05Kg azodiisobutyronitriles and residue 3.0Kg mixed solvents, stirring are equal It is slowly added dropwise in the even backward reactor equipped with SBS resin solutions, time for adding is 3.1h.Insulation 1.1h after being added dropwise completely, drop Temperature, filtering and discharging obtains acrylate modified SBS resins.
(2) acrylate modified SBS resins and C5The preparation of the water-borne dispersions of hydrogenated petroleum resin compounding:Take 8.5Kg C5Hydrogenated petroleum resin is dissolved in 9.0Kg toluene, is stirred, the acrylate modified SBS resins 2.5Kg that addition makes, Heating stirring (rotating speed 800r/min) makes whole system temperature be increased to 80 DEG C, obtains oiliness mixed system.By 4.0Kg emulsifying agents CO436 is distributed in 90 DEG C of deionized waters of 16.0Kg, obtains heat emulsifier dispersion.With rotating speed as 3400r/min at a high speed Under conditions of stirring by heat emulsifier dispersion be slowly added drop-wise to heat oiliness mixed system in (this process keep system temperature not Become), time for adding is 30min, and with 3500r/min high-speed stirred 20min after dripping, cooling, filtering and discharging obtains propylene Acid esters modified SBS resin and C5The water-borne dispersions of hydrogenated petroleum resin compounding.
(3) preparation of slurry:Sequentially added in material-compound tank 0.6Kg white carbons, 0.6Kg titanium dioxides, 1.8Kg talcum powder, 2.8Kg kaolin, 0.1Kg bentonites, 4.0Kg deionized waters, are stirring evenly and then adding into 0.02Kg BYK-381,0.08Kg After BYK-2012 stirrings (rotating speed 800r/min) is uniform, with basket type sand grid grinding machine grinding distribution 2h, filtering obtains slurry.
(4) preparation of stripping lacquer is protected in aqueous milling:Taking 2.5Kg aqueous polyurethanes respectively can the peelable resin (source of Beijing one hundred Chemical Co., Ltd.), 0.75Kg waterborne polyesters polyurethane can peelable resin (the source Chemical Co., Ltd. of Beijing one hundred), the aqueous silicon of 0.07Kg Oil, the acrylate modified SBS resins of 1.8Kg and C5Hydrogenated petroleum resin compounding aqueous dispersion be added to equipped with 0.6Kg go from In the material-compound tank of sub- water, stir, add 4.0Kg slurries, continue to stir 30min, add 0.03Kg BYK-011 stirrings Thickener RM-2020 is added dropwise after 30min, when adding 0.25Kg thickeners RM-2020 to can be good at implementing doctor blade process, continues Stirring 20min, filtering and discharging obtains Water-borne modification milling protection stripping lacquer.
The present embodiment prepares the performance test results of the aqueous milling protection stripping lacquer of gained referring to table 1.
Embodiment 3
(1) preparation of acrylate modified SBS resins:With 1:The mixing of 1 proportions 200g hexamethylenes and toluene is molten 12.0g SBS Petropols are added to stirring in the there-necked flask equipped with 140.0g mixed solvents and are allowed to dissolve by agent, and heating rises To 75 DEG C, system starts backflow to temperature.Be separately added into beaker 74.0g methyl methacrylates, 110.0g butyl acrylates, 2.8g methacrylic acids, 1.2g benzoyl peroxides and residue 60.0g mixed solvents, drop after stirring (rotating speed 700r/min) is uniform It is added in the there-necked flask equipped with SBS resins, time for adding is 2.8h.Insulation 1.2h after being added dropwise completely, cooling, filtering and discharging, Obtain acrylate modified SBS resins.
(2) acrylate modified SBS resins and C5The preparation of the water-borne dispersions of hydrogenated petroleum resin compounding:Take 150.0g C5Hydrogenated petroleum resin is dissolved in 176g toluene, is stirred, the acrylate modified SBS resins 50.0g that addition makes, plus Thermal agitation makes whole system temperature be increased to 85 DEG C, obtains oiliness mixed system.66.0g emulsifying agents CO436 is distributed to In the deionized water of 90 DEG C of 308.0g, heat emulsifier dispersion is obtained.In the condition with rotating speed as 3200r/min high-speed stirreds The lower emulsifier dispersion by heat is slowly added drop-wise in the oiliness mixed system of heat (this process holding system is temperature-resistant), is added dropwise Time is 25min, and with 3500r/min high-speed stirred 20min after dripping, cooling, filtering and discharging obtains acrylate modified SBS resins and C5The water-borne dispersions of hydrogenated petroleum resin compounding.
(3) preparation of slurry:5.0g white carbons, 7.0g titanium whites, 20.0g talcum powder, 26.0g are sequentially added in quick worker's bottle Kaolin, 1.0g bentonites, 40.0g deionized waters, are stirring evenly and then adding into 0.3g BYK-420,0.7g BYK-154 stirring equal 60g beades are added after even, quick worker's bottle is put into and is disperseed 2h in quick worker's disperse mill, filtering obtains slurry.
(4) preparation of stripping lacquer is protected in aqueous milling:Taking 20.0g aqueous polyurethanes respectively can peelable resin (Guangzhou sky standing grain Chemical products Co., Ltd), 8.0g waterborne polyesters polyurethane can peelable resin (the lucky Chemical Co., Ltd. in Zhuhai), the aqueous silicon of 0.5g Oil, the acrylate modified SBS resins of 20.0g and C5The aqueous dispersion of hydrogenated petroleum resin compounding is added to equipped with 4.0g deionizations In the beaker of water, stirring (rotating speed 700r/min) is uniform, adds 45.0g slurries, continues to stir 20min, adds 0.5g BYK- 2.0g thickener BYK-425 are added dropwise after 1711 stirring 20min, can be good at implementing doctor blade process, continue to stir 10min, mistake Material is leached, that is, obtains Water-borne modification milling protection stripping lacquer.
The present embodiment prepares the performance test results of the aqueous milling protection stripping lacquer of gained referring to table 1.
The aqueous milling protection stripping lacquer product of embodiment 1-3 is applied on aluminium sheet, in the drying 3 days of (35 DEG C) of lamp box Afterwards, quarter type carries out chemistry milling technique (referring in particular to People's Republic of China (PRC) Aviation Industry standard HB 5453-2004), test Result is referring to table 1.
As shown in Table 1, during milling, the paint film warp after aqueous milling protection stripping lacquer spraying prepared by the present invention After the immersion of long-time chemical solvent, milling is stuck up when paint film is without running without volume, and milling side grazing is good, illustrates that paint film still has very Good adhesive force, it is ensured that the grazing on milling side, paint film is easily shelled after etch ratio also complies with milling technology requirement, and milling Remove.
Table 1

Claims (9)

1. a kind of aqueous milling protection stripping lacquer, including following component, by mass percentage:
Wherein, the water-borne dispersions are by acrylate modified SBS resins and C5Hydrogenated petroleum resin is compounded and obtained, and is specifically included Following component, by mass percentage:
The acrylate modified SBS resins include following component, by mass percentage:
The slurry includes following component, by mass percentage:
2. aqueous milling protection stripping lacquer according to claim 1, it is characterised in that the defoamer be BYK-028, At least one in BYK-1711, BYK-011, BYK-094, BYK-024;The thickener is in RM-2020, BYK-425 It is at least one;The wetting dispersing agent is at least one in BYK-151, BYK-154, BYK-333, BYK-2012;The stream Flat agent is at least one in BYK-380N, BYK-381, BYK-420, BYK-425.
3. stripping lacquer is protected in aqueous milling according to claim 1, it is characterised in that the breast in the water-borne dispersions Agent is emulsifying agent CO436.
4. stripping lacquer is protected in aqueous milling according to claim 1, it is characterised in that the acrylate modified SBS Mixed solvent in resin is at least one in hexamethylene, butanone, cyclohexanone, toluene.
5. stripping lacquer is protected in aqueous milling according to claim 1, it is characterised in that the acrylate modified SBS Initiator in resin is benzoyl peroxide or azodiisobutyronitrile.
6. the preparation method of stripping lacquer is protected in the aqueous milling as described in claim any one of 1-5, it is characterised in that according to Formula is got the raw materials ready described in claim 1, and it mainly comprises the following steps:Can peelable resin, waterborne polyester polyurethane by aqueous polyurethane Can peelable resin, water-borne dispersions, slurry, deionized water and aqueous silicone oil be added in beaker, stir 30 ± 5min, add froth breaking Agent continues to stir 30 ± 5min, the construction required for thickener reaches is added dropwise under the rotating speed at least stirring condition of 700r/min and glues Degree, continues to stir 20 ± 5min, and filtering and discharging obtains final product the aqueous milling protection stripping lacquer.
7. the preparation method of stripping lacquer is protected in aqueous milling according to claim 6, it is characterised in that described aqueous point The preparation method of a prose style free from parallelism, gets the raw materials ready according to the formula described in claim 1, and it mainly comprises the following steps:By C5Non-hydrogenated petroleum tree Fat is dissolved in toluene, the acrylate modified SBS resins that addition is prepared, and is warming up to 80 ± 5 DEG C, obtains oiliness mixture System;Emulsifying agent is distributed in the deionized water that temperature is 90 ± 5 DEG C, an emulsifier water prose style free from parallelism is obtained;In rotating speed at least Under the stirring condition of 3000r/min, an emulsifier water prose style free from parallelism is added drop-wise in oiliness mixed system, time for adding control 30 ± 5min, emulsifier water prose style free from parallelism temperature is maintained at 90 ± 5 DEG C during dropwise addition, continues after dripping in rotating speed at least 3000r/ Stirred under conditions of min, filtering and discharging obtains final product the water-borne dispersions.
8. the preparation method of stripping lacquer is protected in aqueous milling according to claim 7, it is characterised in that the acrylic acid The preparation method of ester modified SBS resins, gets the raw materials ready according to formula described in claim 1, and it mainly comprises the following steps:By SBS trees Fat is uniformly dissolved into 60~65% mixed solvent, is added in there-necked flask, is warming up to 80 ± 5 DEG C;In system backflow In the case of, to dropwise addition methyl methacrylate, butyl acrylate, methacrylic acid, initiator and remaining mixing in system The mixed liquor of solvent, time for adding is controlled in 3h ± 10min;Insulation 1h ± 10min, is cooled to less than 30 DEG C after being added dropwise completely, Filtering and discharging, obtains final product the acrylate modified SBS resins.
9. the preparation method of stripping lacquer is protected in aqueous milling according to claim 6, it is characterised in that the slurry Preparation method, gets the raw materials ready according to the formula described in claim 1, and it mainly comprises the following steps:By white carbon, titanium dioxide, talcum Powder, kaolin, bentonite, and wetting dispersing agent and levelling agent are added separately in quick worker's bottle, add deionized water and glass Glass pearl, grinding distribution is to obtain the slurry in quick worker's disperse mill.
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CN115815078A (en) * 2022-10-08 2023-03-21 中昊北方涂料工业研究设计院有限公司 Method for improving quality of aluminum alloy chemical milling glue film

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CN111040562A (en) * 2019-11-29 2020-04-21 山东天汇防水股份有限公司 Colorless modified emulsion suitable for waterproof coating
CN112608654A (en) * 2020-12-07 2021-04-06 中昊北方涂料工业研究设计院有限公司 Dip-coating type chemical milling protective adhesive
CN115815078A (en) * 2022-10-08 2023-03-21 中昊北方涂料工业研究设计院有限公司 Method for improving quality of aluminum alloy chemical milling glue film
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