CN103756396A - Mixed wax capable of enhancing smoothness of coating and preparation method of mixed wax - Google Patents
Mixed wax capable of enhancing smoothness of coating and preparation method of mixed wax Download PDFInfo
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- CN103756396A CN103756396A CN201310730682.7A CN201310730682A CN103756396A CN 103756396 A CN103756396 A CN 103756396A CN 201310730682 A CN201310730682 A CN 201310730682A CN 103756396 A CN103756396 A CN 103756396A
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Abstract
The invention provides mixed wax capable of enhancing smoothness of a coating and a preparation method of the mixed wax. The preparation method comprises the following steps: in a reaction kettle, adding a certain amount of dispersant, imitator, and polyethylene (PE) wax/hexafluoropropene trimer/silicyl vinyl unsaturated silane; heating to reaction temperature, thus obtaining surface-grafted PE wax powder after reaction; then, mixing the PE wax powder with polytetrafluoroethylene (PTFE) powder; and grinding and crushing the mixture in a flour mill to obtain the mixed wax provided by the invention. PE wax spheres are surface-modified through the hexafluoropropylene trimer and the hydrolytic silicyl vinyl unsaturated silane, so that the compatibility of the PE wax spheres with PTFE is improved. Meanwhile, the hexafluoropropene trimer and the hydrolytic silicyl vinyl unsaturated silane are polymerized to form a net structure with branch chains, thereby improving binding force of the PE wax powder with the PTFE micro powder in blending. The mixed wax can be widely applied to various water-based paints or alcohol soluble paints.
Description
Technical field
The present invention relates to a kind of preparation method of blended wax, particularly a kind of blended wax that strengthens the smooth performance of coating and preparation method thereof.
Background technology
Tetrafluoroethylene wax is added into polymer coating, can improvement table top or transmit the non-wettability of adhesion article travelling belt, and easily sticky article do not stick containing wax coating.Tetrafluoroethylene wax is added into mineral oil or synthetic oil, as viscosifying agent, prepares special oil.Because tetrafluoroethylene wax has the characteristic of high-low temperature resistant, anticorrosive and low friction, thereby the grease of institute's multiviscosisty also correspondingly had these valuable performances, can get rid of in the special occasions of environment harshness
In the preparation of coating material, generally with 0.01-10% concentration, add wax.Generally PE wax, PTFE wax, PP wax, amide waxe, FT paraffin, montanin wax, natural wax, coarse-grain and microcrystalline wax, polyethylene and ethylene copolymers, Isosorbide Dinitrate and metallocenes wax, with same their blend, form with thin slice, particle, powder, dispersion, emulsion or powder compounds adds these wax, and conventional type of service is the fine powder powder that granularity is at most 4 μ m.Use these waxes to reach following effect in coating material: better scratch-resistant, better wear resistance, the better dispersion of pigment, better pigment stability, the improvement of sedimentation tendency, the improvement of pigment redispersion, for the activity orientation material of effect pigment, effectively delustring, gratifying sense of touch, the improvement of oilness, the improvement of metal mark, reach effective introducing of effect pigment, the impact of rheological property, better adhesion inhibiting properties, better sand milling, degassed additive in powder coating, for increasing the additive of powder coating output.
These wax additives can be used for all coating systems, as low solid, medium solid, high solid, solvent-based coating material, moisture or can release rare coating material, powder coating material, physical dryness coating system, chemosetting coating material and radiation curable coating material by water, as UV coating material.
CN1429257 provides the purposes of wax mixture for improvement of coating material performance, this wax mixture comprises homopolymer or the multipolymer of the C2-C18 alpha-olefin of a) preparing by metallocene catalyst, with equally from the degradation wax of the relative high chain length manufacture of polyolefins of producing by metallocene catalyst, with, as auxiliary agent, one or more are selected from other following wax: b) PE wax, c) PTFE wax, d) PP wax, e) amide waxe, f) FT paraffin, g) montanin wax, h) natural wax, i) coarse-grain and microcrystalline wax, j) polar polyolefin waxes, or k) Isosorbide Dinitrate, 1) polymeric amide, m) polyolefine, n) PTFE, o) wetting agent, p) silicate.
CN101469148 discloses a kind of fluorine-containing polymer dispersant for water paint.It is take vinylformic acid hexafluoro butyl ester, vinylformic acid, methyl methacrylate, be polymerization single polymerization monomer, Diisopropyl azodicarboxylate is initiator, and Virahol is solvent, and sodium hydroxide is neutralizing agent, adopt free radical polymerization process, prepare a kind of fluorine-containing polymer dispersant for water paint.Resulting dispersion agent can be suitable for pigment dyestuff and mineral dye, remarkable for the surface tension effect that reduces water, the mill base obtaining after dispersion has that viscosity is low, concentration is high, bright in colour, the characteristic of good stability, and when being diluted with water to lower concentration, thick phenomenon can not assembled yet, be returned to mill base
Existing known technology all has complicated components, and cost is high, and between high molecular polymer, consistency is poor, mixes the shortcomings such as inhomogeneous, has affected the use effect in full scale plant
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of blended wax that strengthens the smooth performance of coating and preparation method thereof.
In reactor, squeeze into pure water, stopper, adds a certain amount of dispersion agent, initiator, polyethylene wax PE/ hexafluoropropylene trimer/silyl vinyl insatiable hunger silane, be warming up to temperature of reaction, question response finishes. and dry closing bag, obtain the polyethylene wax powder of surface grafting. then mix with polytetrafluoroethylene PTFE powder, in pulverizing mill, grind fragmentation, obtain this patent product.
The present invention introduces the hexafluoropropylene trimer C of the two keys of a small amount of band on polyethylene wax pellets surface
9f
18with the 3rd monomer silyl vinyl insatiable hunger silane as comonomer, carry out surface modification, hydrolyzable silyl vinyl unsaturated silane facile hydrolysis in water, generate vinyl silanol, its vinyl and hexafluoropropylene trimer occur free-radical polymerized, and the product of generation has certain 3 D cross-linked reticulated structure.Can improve the consistency of PE/PTFE polymkeric substance.
The invention provides a kind of blended wax that strengthens the smooth performance of coating and preparation method thereof, by following steps, realize:
The preparation of step 1. water
By weight, add 1000 parts of water in reactor, 0.5-10 part emulsifying agent (preferably 2 parts), stirs;
Described chemical dispersant comprises anionic emulsifier, is any one in chain alkyl type anionic emulsifier, Perfluorocaprylic Acid sylvite or the ammonium salts such as ammonium lauryl sulfate, Sodium dodecylbenzene sulfonate, hexadecyl benzene sulfonic acid sodium salt, B-53, Voranol EP 2001 sodium sulfate and paraffinic hydrocarbons sodium sulfonate and the pungent sulfonate sodium of perfluor alkane or ammonium salt.And nonionic emulsifier, be any one in Voranol EP 2001, polyoxyethylene alkyl phenyl ether, polyxyethylated allyl ether, polyoxyethylene shrink Sorbitol Powder fatty acid ester, polyoxyethylene sorbitol fatty acid ester, glycerol fatty acid ester.Preferred hexadecyl benzene sulfonic acid sodium salt.
The preparation of step 2. oil phase
By weight, by 100 parts of PE waxes, 0-10 part (preferably 3 parts) hexafluoropropylene trimer, 0-10 part (preferably 1 part) silyl vinyl insatiable hunger silane monomer mixes, then adds 0.05-1 part peroxide initiator (preferably 0.2 part), stirs.
Step 3. suspension polymerization
The oil-phase solution preparing in step 2 beaker is added in step 1 and is equipped with in the reactor of preparing water, first slow rear fast stirring, then from 40-80 ℃ of (preferably 50 ℃) temperature reaction 10-15h (preferably 10h), reaction finishes rear blowing, washing microballoon is limpid to water, obtains product.
Step 4. blend is pulverized
80-98 part step 3 is obtained to the polyethylene wax powder of surface modification. then mix with 2-20 part PTFE powder, weight is ground broken in pulverizing mill, obtains this patent product.
The preferred Potassium Persulphate of peroxide initiator described in step 2, ammonium persulphate.
Described pulverizing mill can be used to preparation/mixed powder or other materials, and described equipment can comprise, without limitation, for example: multiple agitator, comprise revolving stirrer, and multiple pulverizing mill, comprise ball mill, electromagnetic ball grinding machine, disc flour mill, needle mill, high energy impact shredder, stream energy impact mill, reversal nozzle jet mill, fluidised-bed spray grinding machine, beater grinder, tumbling mill, mechanic diffusion handler, or impact mill.In described pulverizing mill, at a high speed and high strength can be employed or be applied on dry powder material, to realize high-shear or HI high impact is applied to dry powder material, be preferably fluidised-bed spray grinding machine.
Described water-disintegrable silyl vinyl insatiable hunger silane is vinyltrimethoxy silane, vinyl methyldiethoxysilane, vinyl methyl dimethoxysilane, vinyltriethoxysilane and vinyl ethyl diethoxy silane, (methyl) acryloyl-oxy propyl trimethoxy silicane, (methyl) acryloyl-oxy propyl-triethoxysilicane, Y-(methyl) acryloyl-oxy propyl group organoalkoxysilane, the alkoxysilylalkyl Vinyl Ethers such as trimethoxy-silylpropyl Vinyl Ether and triethoxysilylpropyltetrasulfide Vinyl Ether, any one in trimethoxysilyl capric acid ethene and triethoxysilyl capric acid ethene.
Beneficial effect of the present invention:
Polyethylene wax spheroid is through hexafluoropropylene trimer and water-disintegrable silyl vinyl insatiable hunger silane modified surface, improved the consistency with tetrafluoroethylene, can contact fully in being pulverized and mixed process, and dispersion more even.Simultaneously hexafluoropropylene trimer forms branched reticulated structure with water-disintegrable silyl vinyl insatiable hunger polymerizable silane, is conducive to improve in blend and the bonding force of ptfe micropowder; For water-based or alcohol dissolubility (polar solvent system) coating system, can increase substantially the slipping of coating, due to acrylic resin, urethane resin, Synolac, epoxy resin, Vinylite, nitrocellulose resin etc. can be compatible, so can be widely used in all kinds water-borne coatings or alcohol soluble paint.
Embodiment
Following examples are only to further illustrate the present invention, are not restriction the scope of protection of the invention.
The invention provides a kind of printing-ink blended wax processed and preparation method thereof, by following steps, realize:
The preparation of step 1. water
By weight, add 1000 parts of water in reactor, 2 parts of hexadecyl benzene sulfonic acid sodium salts, stir.
The preparation of step 2. oil phase
By weight, by 100 parts of PE waxes, 3 parts of hexafluoropropylene trimers, 1 part of silyl vinyl insatiable hunger silane monomer mixes, then adds 0.2 part of peroxide initiator, stirs.
Step 3. suspension polymerization
The oil-phase solution preparing in step 2 beaker is added in step 1 and is equipped with in the reactor of preparing water, first slow rear fast stirring, then, from 50 ℃ of reactions 10, reaction finishes rear blowing, and washing microballoon is limpid to water, obtains product.
Step 4. blend is pulverized
90 parts of steps 3 are obtained to the polyethylene wax powder of surface grafting. then mix with 10 parts of PTFE powders, weight is ground broken in fluidised-bed spray grinding machine, obtains this patent product.Be numbered SX-1.
Embodiment 2
80 parts of steps 3 are obtained to the polyethylene wax powder of surface grafting. then mix with 20 parts of PTFE powders, weight is ground broken in fluidised-bed spray grinding machine, obtains this patent product.Be numbered SX-2.
Embodiment 3
98 parts of steps 3 are obtained to the polyethylene wax powder of surface grafting. then mix with 2 parts of PTFE powders, weight is ground broken in fluidised-bed spray grinding machine, obtains this patent product.Be numbered SX-3.
Embodiment 4
In step 2, water-disintegrable silyl vinyl insatiable hunger silane monomer is selected vinyltrimethoxy silane, the other the same as in Example 1.Products obtained therefrom is numbered SX-4
Embodiment 5
In step 2, water-disintegrable silyl vinyl insatiable hunger silane monomer is selected vinyl methyldiethoxysilane, the other the same as in Example 2.Products obtained therefrom is numbered SX-5.
Embodiment 6
In step 2, water-disintegrable silyl vinyl insatiable hunger silane monomer is selected vinyl methyl dimethoxysilane, the other the same as in Example 3.Products obtained therefrom is numbered SX-6.
Embodiment 7
In step 2, water-disintegrable silyl vinyl insatiable hunger silane monomer is selected (methyl) acryloyl-oxy propyl trimethoxy silicane, the other the same as in Example 1.Products obtained therefrom is numbered SX-7.
Embodiment 8
In step 2, water-disintegrable silyl vinyl insatiable hunger silane monomer is selected trimethoxysilyl capric acid ethene, the other the same as in Example 1.Products obtained therefrom is numbered SX-8.
Embodiment 9
In step 2, water-disintegrable silyl vinyl insatiable hunger silane monomer is selected trimethoxy-silylpropyl Vinyl Ether, the other the same as in Example 1.Products obtained therefrom is numbered SX-9.
Embodiment 10
Polyethylene wax powder does not carry out grafting, only carries out the blend of step 4, does not carry out the reaction of step 1-3, the other the same as in Example 1.Products obtained therefrom is numbered SX-10.
Embodiment 11
Micro mist wax is used for the object of delustring and slip to the introducing in nitrocellulose standard varnish: by dissolver, by disperseing the NC varnish neutralization of 2wt% micro mist wax being introduced to 98wt% then to use framework applicator to be drawn to (60 μ m wet-film thickness) on sheet glass downwards.After dry, measure gloss.
By means of framework applicator, varnish is coated to (at least two plates in each case) (60 on glass
μm wet-film thickness).Plate in baking oven 50 ℃ at stored 24 hour thereafter.In the case, plate is placed, have coating thereon with load 500g weight.Thereafter, evaluation adhesion behavior
| ? | Gloss (60 ° of angles) | Slide | Blocking characteristics |
| NC varnish is without wax | 143 | 0.48 | Sizable |
| SX-1 | 41 | 0.13 | Nothing |
| SX-2 | 23 | 0.11 | Nothing |
| SX-3 | 48 | 0.21 | Trace |
| SX-4 | 44 | 0.18 | Nothing |
| SX-5 | 29 | 0.21 | Nothing |
| SX-6 | 59 | 0.23 | Trace |
| SX-7 | 18 | 0.11 | Nothing |
| SX-8 | 22 | 0.17 | Nothing |
| SX-9 | 19 | 0.19 | Nothing |
| SX-10 | 108 | 0.31 | Some |
Claims (2)
1. blended wax that strengthens the smooth performance of coating and preparation method thereof, is characterized in that comprising the following steps: the preparation of step 1. water
By weight, add 1000 parts of water in reactor, 0.5-10 part emulsifying agent, stirs;
Described chemical dispersant comprises anionic emulsifier, is any one in chain alkyl type anionic emulsifier, Perfluorocaprylic Acid sylvite or the ammonium salts such as ammonium lauryl sulfate, Sodium dodecylbenzene sulfonate, hexadecyl benzene sulfonic acid sodium salt, B-53, Voranol EP 2001 sodium sulfate and paraffinic hydrocarbons sodium sulfonate and the pungent sulfonate sodium of perfluor alkane or ammonium salt.And nonionic emulsifier, be any one in Voranol EP 2001, polyoxyethylene alkyl phenyl ether, polyxyethylated allyl ether, polyoxyethylene shrink Sorbitol Powder fatty acid ester, polyoxyethylene sorbitol fatty acid ester, glycerol fatty acid ester.Preferred hexadecyl benzene sulfonic acid sodium salt.
The preparation of step 2. oil phase
By weight, by 100 parts of PE waxes, 0-10 part hexafluoropropylene trimer, 0-10 part silyl vinyl insatiable hunger silane monomer mixes, then adds 0.05-1 part peroxide initiator, stirs.
Step 3. suspension polymerization
By weight, the oil-phase solution preparing in step 2 beaker is added in step 1 and is equipped with in the reactor of preparing water, first slow rear fast stirring, then from 40-80 ℃ of temperature reaction 10-15h, reaction finishes rear blowing, and washing microballoon is limpid to water, obtains product.
Step 4. blend is pulverized
By weight, 80-98 part step 3 is obtained to the polyethylene wax powder of surface modification. then mix with 2-20 part PTFE powder, weight is ground broken in pulverizing mill, obtains this patent product.
2. blended wax that strengthens the smooth performance of coating and preparation method thereof, it is characterized in that, step 2) in, use hexafluoropropylene trimer, silyl vinyl insatiable hunger silane monomer carries out surface aggregate to PE wax, described water-disintegrable silyl vinyl insatiable hunger silane is vinyltrimethoxy silane, vinyl methyldiethoxysilane, vinyl methyl dimethoxysilane, vinyltriethoxysilane and vinyl ethyl diethoxy silane, (methyl) acryloyl-oxy propyl trimethoxy silicane, (methyl) acryloyl-oxy propyl-triethoxysilicane, Y-(methyl) acryloyl-oxy propyl group organoalkoxysilane, the alkoxysilylalkyl Vinyl Ethers such as trimethoxy-silylpropyl Vinyl Ether and triethoxysilylpropyltetrasulfide Vinyl Ether, any one in trimethoxysilyl capric acid ethene and triethoxysilyl capric acid ethene.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104031346A (en) * | 2014-06-20 | 2014-09-10 | 浙江衢州万能达科技有限公司 | Modified polypropylene wax-polytetrafluoroethylene composition |
| CN104031347A (en) * | 2014-06-20 | 2014-09-10 | 浙江衢州万能达科技有限公司 | Modified polyamide wax and polytetrafluoroethylene composition |
| CN104109378A (en) * | 2014-06-20 | 2014-10-22 | 浙江衢州万能达科技有限公司 | Composition of polytetramethyleneadiamide and polytetrafluoroethylene |
| CN104356313A (en) * | 2014-11-19 | 2015-02-18 | 广东华兹卜化学工业有限公司 | Water-based alkyd resin and preparation method thereof |
| CN106752270A (en) * | 2016-12-30 | 2017-05-31 | 安徽真信涂料有限公司 | A kind of special delustring micro mist wax of valve protective coating |
| CN110240824A (en) * | 2018-03-09 | 2019-09-17 | 衢州市中通化工有限公司 | A kind of preparation method of compound Wax composition |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104031346A (en) * | 2014-06-20 | 2014-09-10 | 浙江衢州万能达科技有限公司 | Modified polypropylene wax-polytetrafluoroethylene composition |
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| CN104109378A (en) * | 2014-06-20 | 2014-10-22 | 浙江衢州万能达科技有限公司 | Composition of polytetramethyleneadiamide and polytetrafluoroethylene |
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| CN104356313B (en) * | 2014-11-19 | 2017-05-31 | 广东华兹卜新材料科技有限公司 | A kind of aqueous alkide resin and preparation method thereof |
| CN106752270A (en) * | 2016-12-30 | 2017-05-31 | 安徽真信涂料有限公司 | A kind of special delustring micro mist wax of valve protective coating |
| CN110240824A (en) * | 2018-03-09 | 2019-09-17 | 衢州市中通化工有限公司 | A kind of preparation method of compound Wax composition |
| CN110240824B (en) * | 2018-03-09 | 2021-08-17 | 衢州市中通化工有限公司 | Preparation method of composite wax composition |
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