CN110041798A - A kind of preparation method of PVC water-repellent paint - Google Patents
A kind of preparation method of PVC water-repellent paint Download PDFInfo
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- CN110041798A CN110041798A CN201910266576.5A CN201910266576A CN110041798A CN 110041798 A CN110041798 A CN 110041798A CN 201910266576 A CN201910266576 A CN 201910266576A CN 110041798 A CN110041798 A CN 110041798A
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- epoxy resin
- repellent paint
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- 238000002360 preparation method Methods 0.000 title claims abstract description 48
- 239000003973 paint Substances 0.000 title claims abstract description 34
- 239000005871 repellent Substances 0.000 title claims abstract description 29
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 107
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 107
- 239000003822 epoxy resin Substances 0.000 claims abstract description 52
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 52
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 40
- 239000002002 slurry Substances 0.000 claims abstract description 20
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229960000935 dehydrated alcohol Drugs 0.000 claims abstract description 11
- 239000004014 plasticizer Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 48
- 239000003795 chemical substances by application Substances 0.000 claims description 40
- 230000004048 modification Effects 0.000 claims description 30
- 238000012986 modification Methods 0.000 claims description 30
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 17
- 238000010792 warming Methods 0.000 claims description 15
- VVJKKWFAADXIJK-UHFFFAOYSA-N allylamine Natural products NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 claims description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- RHQDFWAXVIIEBN-UHFFFAOYSA-N Trifluoroethanol Chemical compound OCC(F)(F)F RHQDFWAXVIIEBN-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- -1 trihydroxy methyl Chemical group 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 9
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 9
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 9
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims description 9
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 8
- 238000005215 recombination Methods 0.000 claims description 7
- 230000006798 recombination Effects 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 125000005442 diisocyanate group Chemical group 0.000 claims description 4
- 238000005292 vacuum distillation Methods 0.000 claims description 4
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001294 propane Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 239000002537 cosmetic Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 42
- 239000011248 coating agent Substances 0.000 abstract description 37
- 125000003545 alkoxy group Chemical group 0.000 abstract description 18
- 238000007711 solidification Methods 0.000 abstract description 15
- 230000008023 solidification Effects 0.000 abstract description 15
- 230000002209 hydrophobic effect Effects 0.000 abstract description 11
- 230000003712 anti-aging effect Effects 0.000 abstract description 10
- 230000009471 action Effects 0.000 abstract description 5
- 125000001153 fluoro group Chemical group F* 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 description 20
- 239000000853 adhesive Substances 0.000 description 15
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 8
- 239000002131 composite material Substances 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 6
- 229910052731 fluorine Inorganic materials 0.000 description 6
- 239000011737 fluorine Substances 0.000 description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 5
- 125000003700 epoxy group Chemical group 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical class CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000036541 health Effects 0.000 description 4
- 238000004901 spalling Methods 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 229920001596 poly (chlorostyrenes) Polymers 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000010410 dusting Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000003682 fluorination reaction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007142 ring opening reaction Methods 0.000 description 2
- GGDYAKVUZMZKRV-UHFFFAOYSA-N 2-fluoroethanol Chemical compound OCCF GGDYAKVUZMZKRV-UHFFFAOYSA-N 0.000 description 1
- 206010067484 Adverse reaction Diseases 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 125000001820 oxy group Chemical group [*:1]O[*:2] 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
- C08F8/32—Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/42—Introducing metal atoms or metal-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/14—Polycondensates modified by chemical after-treatment
- C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
- C08G59/1438—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing oxygen
- C08G59/1455—Monocarboxylic acids, anhydrides, halides, or low-molecular-weight esters thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Emergency Medicine (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of preparation methods of PVC water-repellent paint, specific preparation process is as follows: the branch chlorinated polynvinyl chloride (CPVC) and dehydrated alcohol of preparation are added in stirred tank, nano-titanium dioxide, plasticizer and defoaming agent is added thereto simultaneously, it is uniformly mixed to obtain main slurry, the fluorinated epoxy resin powder of preparation is added in main slurry, it is stirred to react 30-40min at 40-45 DEG C, obtains sticky slurry, as PVC water-repellent paint.The present invention is by directly carrying out solidification crosslinked action for alkoxy grafted polyvinyl chloride and fluorinated epoxy resin, so that branch chlorinated polynvinyl chloride (CPVC) and fluorinated epoxy resin solidification are cross-linked into reticular structure, so that nano-titanium dioxide package is wherein, and then it can be realized and nano-titanium dioxide is preferably fixed, it is evenly distributed with alkoxy and fluorine functional group on reticular structure simultaneously, so that coating has uniform hydrophobic, anti-aging and thermal stability.
Description
Technical field
The invention belongs to coating preparation fields, are related to a kind of preparation method of PVC water-repellent paint.
Background technique
Polyvinyl chloride has excellent acidproof, alkaline-resisting, corrosion resistance, higher hydrophobic performance, while mechanical performance height, electricity
Insulation performance is strong, is widely used in the protection of plate surface, but polyvinyl chloride is since thermal stability and light resistance are poor,
Start to decomposite hydrogen chloride at 150 DEG C, with how much generation adverse reactions of plasticizer loading, therefore in processing use process
Usually addition modifying agent, improves its thermal stability and anti-aging property.
In existing PVC coating preparation process be usually by polyvinyl chloride carry out polymeric modification after with antiaging agent,
Heat stabilizer carries out melting mixing and coating is made, and there are interfacial tensions between polyvinyl chloride and modifying agent, causes fusion dispersion not
Uniformly, and then improved performance is influenced, so that the thermal stability and anti ageing property of modified polyvinyl chloride are still lower, simultaneously
It is only dissolve in due to polyvinyl chloride in the solvent that cyclohexanone, dichloroethanes and tetrahydrofuran etc. are more toxic, in the painting of preparation
These dissolutions are directly added in material will cause environmental pollution and harm health, at the same the adhesive property of polyvinyl chloride and adhesive force compared with
Low, the prior art is usually to be coated with one layer of binding material in bottom when being coated with PVC coating, realizes pvc coating
Stick, coating process is complicated, and the compatibility being directly coated between two layers, two layers equally influences the adhesive force of polyvinyl chloride.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods of PVC water-repellent paint, by the way that alkoxy is grafted polychlorostyrene second
Alkene and fluorinated epoxy resin directly carry out solidification crosslinked action, so that branch chlorinated polynvinyl chloride (CPVC) is cross-linked into fluorinated epoxy resin solidification
Reticular structure so that nano-titanium dioxide package is wherein, and then can be realized and preferably fix to nano-titanium dioxide, simultaneously
Alkoxy and fluorine functional group are evenly distributed on reticular structure, so that coating has uniform hydrophobic, anti-aging and thermostabilization
Property, solve in the prior art directly by melt mixing methods, polyvinyl chloride mixed with modifying agent, due to polyvinyl chloride with change
Property agent between there are interfacial tension, cause fusion dispersion uneven, and then influence improved performance, so that modified polyvinyl chloride
Thermal stability and the still lower problem of anti ageing property.
The present invention by the way that alkoxy grafted polyvinyl chloride and fluorinated epoxy resin are directly carried out solidification crosslinked action so that
Branch chlorinated polynvinyl chloride (CPVC) and fluorinated epoxy resin solidification are cross-linked into reticular structure, so that epoxy resin and polyvinyl chloride dispersion are equal
It is even, due to epoxy resin adhesive property with higher, it can ensure that coating is firmly bonded in the surface of plate, without making
It is bonded with adhesive, coating process is simple, it is only necessary to which being coated with one layer can be firmly bonded, and solve the prior art and be coated with
It is usually to be coated with one layer of binding material in bottom when PVC coating, realizes sticking for pvc coating, coating process is complicated,
And the problem of compatibility being directly coated between two layers, two layers equally influences the adhesive force of polyvinyl chloride.
The present invention is by the way that polyvinyl chloride to polymerize with branching graft modification agent, so that introducing a large amount of ether in polyvinyl chloride chain
Base, amino, alkoxy etc. increase the flexibility of polyvinyl chloride, while destroying the symmetry of polyvinyl chloride, and then improve branch
The branch chlorinated polynvinyl chloride (CPVC) of the solubility property of chlorinated polynvinyl chloride (CPVC), preparation can directly dissolve in acetone, dehydrated alcohol, and then solve
Existing polyvinyl chloride is dissolved in the solvent that cyclohexanone, dichloroethanes and tetrahydrofuran etc. are more toxic, and will cause environment dirt
The problem of dye and harm health.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of preparation method of PVC water-repellent paint, specific preparation process are as follows:
The first step prepares branching graft modification agent, and specific preparation process is as follows:
1. trihydroxymethylpropanyltri diglycidyl ether is added in reaction kettle, it is cooled to 5-10 DEG C, is added thereto dropwise
Allylamine is warming up to 30-35 DEG C of reaction 1-1.5h after being stirred to react 3-4h, obtains colorless and transparent solution；
2. r- aminopropyltriethoxywerene werene is added into the reaction kettle of step 1., it is warming up to 80-90 DEG C and is stirred at reflux
9-10h is reacted, is then reduced to room temperature that ethylenediamine is added into reaction kettle, constant temperature back flow reaction 4-5h depressurizes product
Distillation, obtains branching graft modification agent, and reaction structure formula is as shown in Figure 1, wherein every mole of trimethylol propane three-glycidyl
Allylamine 1.01-1.02mol is added in ether, r- aminopropyltriethoxywerene werene 1-1.02mol is added, ethylenediamine 1.1- is added
1.2mol；Due in trihydroxymethylpropanyltri diglycidyl ether containing there are three epoxy group, can be with the amino in allylamine
It carries out ring-opening reaction and controls the additional amount of allylamine so that allyl is introduced into trihydroxymethylpropanyltri diglycidyl ether,
So that only one epoxy group progress ring-opening reaction in trihydroxymethylpropanyltri diglycidyl ether, and other two epoxy group
In one of them reacted with r- aminopropyltriethoxywerene werene so that alkoxy is introduced into modifying agent, the second two being eventually adding
Amine is reacted with another epoxy group, so that ethylenediamine is introduced into modifying agent, so that introducing amino, alkane in final modifying agent
Oxygroup and allyl；
A certain amount of polyvinyl chloride is added in cyclohexanone second step, leads to nitrogen 20- after stirring and dissolving into reaction vessel
Benzoyl peroxide is then added in 30min into reaction vessel under nitrogen protection, is added after being uniformly mixed thereto
The branching graft modification agent prepared in one step is warming up to 120 DEG C of isothermal reaction 8-10h after being added dropwise completely, then carries out decompression steaming
Recycling solvent cyclohexanone therein is evaporated, branch chlorinated polynvinyl chloride (CPVC) is obtained；Branching graft modification agent 1.83- is added in every gram of polyvinyl chloride
1.86g, is added benzoyl peroxide 0.46-0.48g, and the free radical that benzoyl peroxide generates captures the tertiary carbon on polyvinyl chloride
Hydrogen and allylic hydrogen, while the free radical that benzoyl peroxide generates captures the hydrogen in branching graft modification agent on alkylene, makes
It obtains in polyvinyl chloride chain and generates free radical in branching graft modification agent, by Raolical polymerizable branching grafting is changed
Property agent be grafted on polyvinyl chloride so that amino and alkoxy are introduced in the monomer in polyvinyl chloride chain, due to alkoxy
It is introduced directly into polyvinyl chloride monomer, so that a large amount of alkoxy is introduced on polyvinyl chloride, so that the branching polychlorostyrene of preparation
Ethylene thermal stability with higher, simultaneously because introducing the increase such as a large amount of ether, amino, alkoxy in polyvinyl chloride chain
The flexibility of polyvinyl chloride, while the symmetry of polyvinyl chloride is destroyed, and then improve the solubility property of branch chlorinated polynvinyl chloride (CPVC),
The branch chlorinated polynvinyl chloride (CPVC) of preparation can directly dissolve in acetone, dehydrated alcohol, and then solve existing polyvinyl chloride and be dissolved in
In the solvent that cyclohexanone, dichloroethanes and tetrahydrofuran etc. are more toxic, the problem of environmental pollution and harm health will cause；
By epoxy resin adding into acetone stirring and dissolving, while trifluoroethanol is added in third step thereto, is uniformly mixed
Afterwards, diisocyanate is added thereto under room temperature, is stirred to react 5-6h, then heat to 80-85 DEG C of evaporation, obtain fluorinated epoxy
Toner；Trifluoroethanol 0.032-0.035mol is wherein added in every gram of epoxy resin, wherein trifluoroethanol and diisocyanate
The ratio between amount of ester substance is 1:1.1-1.2；
The branch chlorinated polynvinyl chloride (CPVC) and dehydrated alcohol that prepare in second step are added in stirred tank 4th step, while thereto
Nano-titanium dioxide, plasticizer and defoaming agent is added, is uniformly mixed to obtain main slurry, the fluorination ring that will be prepared in third step
Oxygen toner is added in main slurry, is stirred to react 30-40min at 40-45 DEG C, obtains sticky slurry, as PVC waterproof
Coating；Main slurry and fluorinated epoxy resin powder are ready-to-use when the coating uses, and the PVC water-repellent paint after configuration is good is at 35 DEG C
Under at a temperature of need use in 8-9h to finish, be otherwise easy solidification and agglomerate；There is amino due to introducing in branching polyvinyl chloride chain,
It can carry out curing reaction with the epoxy group at fluorinated epoxy resin both ends to react, so that branch chlorinated polynvinyl chloride (CPVC) and fluorinated epoxy tree
Rouge solidification is cross-linked into reticular structure, so that nano-titanium dioxide package is wherein, and then can be realized to nano-titanium dioxide more
Good fixation, simultaneously because epoxy resin adhesive property with higher, can ensure that coating is firmly bonded in the table of plate
Face, without using adhesive to be bonded；
Wherein the parts by weight of each component raw material are as follows in PVC water-repellent paint:
57-62 parts of branch chlorinated polynvinyl chloride (CPVC), 63-67 parts of fluorinated epoxy resin powder, 2-3 parts of nano-titanium dioxide, plasticizer
3-5 parts, 3-5 parts of defoaming agent, 130-140 parts of dehydrated alcohol；
The viscous paste prepared in 4th step is coated directly onto the surface of plate by the 5th step, is solidified at 60-65 DEG C
20-30min, at this time one layer of PVC waterproof membrane of the surface recombination of plate.
Beneficial effects of the present invention:
By the way that alkoxy grafted polyvinyl chloride and fluorinated epoxy resin are directly carried out solidification crosslinked action, so that branching is poly-
Vinyl chloride and fluorinated epoxy resin solidification are cross-linked into reticular structure, so that nano-titanium dioxide package is wherein, and then can be real
Now nano-titanium dioxide is preferably fixed, while being evenly distributed with alkoxy and fluorine functional group on reticular structure, so that applying
Material has uniform hydrophobic, anti-aging and thermal stability, solves in the prior art directly by melt mixing methods, by polychlorostyrene second
Alkene is mixed with modifying agent, since there are interfacial tensions between polyvinyl chloride and modifying agent, causes fusion dispersion uneven, Jin Erying
Improved performance is rung, so that the problem that the thermal stability and anti ageing property of modified polyvinyl chloride are still lower.
The present invention by the way that alkoxy grafted polyvinyl chloride and fluorinated epoxy resin are directly carried out solidification crosslinked action so that
Branch chlorinated polynvinyl chloride (CPVC) and fluorinated epoxy resin solidification are cross-linked into reticular structure, so that epoxy resin and polyvinyl chloride dispersion are equal
It is even, due to epoxy resin adhesive property with higher, it can ensure that coating is firmly bonded in the surface of plate, without making
It is bonded with adhesive, coating process is simple, it is only necessary to which being coated with one layer can be firmly bonded, and solve the prior art and be coated with
It is usually to be coated with one layer of binding material in bottom when PVC coating, realizes sticking for pvc coating, coating process is complicated,
And the problem of compatibility being directly coated between two layers, two layers equally influences the adhesive force of polyvinyl chloride.
The present invention is by the way that polyvinyl chloride to polymerize with branching graft modification agent, so that introducing a large amount of ether in polyvinyl chloride chain
Base, amino, alkoxy etc. increase the flexibility of polyvinyl chloride, while destroying the symmetry of polyvinyl chloride, and then improve branch
The branch chlorinated polynvinyl chloride (CPVC) of the solubility property of chlorinated polynvinyl chloride (CPVC), preparation can directly dissolve in acetone, dehydrated alcohol, and then solve
Existing polyvinyl chloride is dissolved in the solvent that cyclohexanone, dichloroethanes and tetrahydrofuran etc. are more toxic, and will cause environment dirt
The problem of dye and harm health.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the drawings.
Fig. 1 is branching graft modification agent reaction structure formula of the present invention；
Fig. 2 is branching pvc response structural formula of the present invention；
Fig. 3 is water-repellent paint curing reaction structural formula of the present invention；
Fig. 4 is partial structurtes formula in Fig. 3；
Fig. 5 is partial structurtes formula in Fig. 3.
Specific embodiment
Fig. 1-5 is please referred to, is described in detail in conjunction with following examples:
Embodiment 1:
The specific preparation process of branching graft modification agent is as follows:
1. 3.02kg trihydroxymethylpropanyltri diglycidyl ether is added in reaction kettle, it is cooled to 5-10 DEG C, dropwise to it
Middle addition 0.57kg allylamine is warming up to 30-35 DEG C of reaction 1-1.5h after being stirred to react 3-4h, obtains colorless and transparent solution；
2. 2.21kgr- aminopropyltriethoxywerene werene is added into the reaction kettle of step 1., it is warming up to 80-90 DEG C and stirs
Back flow reaction 9-10h is mixed, is then reduced to room temperature that 0.66kg ethylenediamine is added into reaction kettle, constant temperature back flow reaction 4-5h will
Product is evaporated under reduced pressure, and branching graft modification agent is obtained.
Embodiment 2:
The specific preparation process of branching graft modification agent is as follows:
1. 3.02kg trihydroxymethylpropanyltri diglycidyl ether is added in reaction kettle, it is cooled to 5-10 DEG C, dropwise to it
Middle addition 0.57kg allylamine is warming up to 30-35 DEG C of reaction 1-1.5h after being stirred to react 3-4h, obtains colorless and transparent solution；
2. 1.77kgr- aminopropyltriethoxywerene werene is added into the reaction kettle of step 1., it is warming up to 80-90 DEG C and stirs
Back flow reaction 9-10h is mixed, is then reduced to room temperature that 0.78kg ethylenediamine is added into reaction kettle, constant temperature back flow reaction 4-5h will
Product is evaporated under reduced pressure, and branching graft modification agent is obtained.
Embodiment 3:
The specific preparation process of branching graft modification agent is as follows:
1. 3.02kg trihydroxymethylpropanyltri diglycidyl ether is added in reaction kettle, it is cooled to 5-10 DEG C, dropwise to it
Middle addition 0.57kg allylamine is warming up to 30-35 DEG C of reaction 1-1.5h after being stirred to react 3-4h, obtains colorless and transparent solution；
2. 2.43kgr- aminopropyltriethoxywerene werene is added into the reaction kettle of step 1., it is warming up to 80-90 DEG C and stirs
Back flow reaction 9-10h is mixed, is then reduced to room temperature that 0.66kg ethylenediamine is added into reaction kettle, constant temperature back flow reaction 4-5h will
Product is evaporated under reduced pressure, and branching graft modification agent is obtained.
Embodiment 4:
A kind of preparation method of PVC water-repellent paint, specific preparation process are as follows:
1kg polyvinyl chloride is added in 15L cyclohexanone the first step, leads to nitrogen 20- after stirring and dissolving into reaction vessel
0.46kg benzoyl peroxide is then added, after being uniformly mixed thereto in 30min into reaction vessel under nitrogen protection
Branching graft modification agent prepared by 1.83kg embodiment 1 is added, is warming up to 120 DEG C of isothermal reaction 8-10h after being added dropwise completely, then
It carries out vacuum distillation and recycles solvent cyclohexanone therein, obtain branch chlorinated polynvinyl chloride (CPVC)；
1kgE44 type epoxy resin is added stirring and dissolving in 10L acetone, while 3.2kg tri- being added thereto by second step
6.12kg toluene di-isocyanate(TDI) is added after mixing in fluoroethanol thereto under room temperature, be stirred to react 5-6h, then heat up
It is evaporated to 80-85 DEG C, obtains fluorinated epoxy resin powder；
Third step the branch chlorinated polynvinyl chloride (CPVC) prepared in the 5.7kg first step and 13kg dehydrated alcohol is added in stirred tank, together
When 0.2kg nano-titanium dioxide, 0.3kg plasticizer and 0.3kg defoaming agent are added thereto, be uniformly mixed to obtain main slurry
The fluorinated epoxy resin powder prepared in 6.3kg second step is added in main slurry, is stirred to react 30- at 40-45 DEG C by material
40min obtains sticky slurry, as PVC water-repellent paint；Main slurry and fluorinated epoxy resin powder are now matched when the coating use
It is current, PVC water-repellent paint after configuration is good at 35 DEG C at a temperature of need in 8-9h using finishing, be otherwise easy solidification knot
Block；
The viscous paste prepared in third step is coated directly onto the surface of plate by the 4th step, is solidified at 60-65 DEG C
20-30min, at this time one layer of PVC waterproof membrane of the surface recombination of plate.
Embodiment 5:
A kind of preparation method of PVC water-repellent paint is same as Example 4, the implementation that will be added in the first step in embodiment 4
Branching graft modification agent prepared by example 1 replaces with the branching graft modification agent of the preparation of embodiment 2.
Embodiment 6:
A kind of preparation method of PVC water-repellent paint is same as Example 4, the implementation that will be added in the first step in embodiment 4
Branching graft modification agent prepared by example 1 replaces with the branching graft modification agent of the preparation of embodiment 3.
Embodiment 7:
A kind of preparation method of PVC water-repellent paint is same as Example 4, the implementation that will be added in the first step in embodiment 4
Branching graft modification agent prepared by example 1 replaces with γ-(methacryloxypropyl) propyl trimethoxy silicane.
Embodiment 8:
A kind of preparation method of PVC water-repellent paint is same as Example 4, the fluorination that will be added in third step in embodiment 4
The content of epoxy resin replaces with 5.2kg.
Embodiment 9:
A kind of preparation method of PVC water-repellent paint, specific preparation process are as follows:
1kg polyvinyl chloride is added in 15L cyclohexanone the first step, leads to nitrogen 20- after stirring and dissolving into reaction vessel
0.46kg benzoyl peroxide is then added, after being uniformly mixed thereto in 30min into reaction vessel under nitrogen protection
1.83kg γ-(methacryloxypropyl) propyl trimethoxy silicane is added, is warming up to 120 DEG C of isothermal reaction 8- after being added dropwise completely
Then 10h carries out vacuum distillation and recycles solvent cyclohexanone therein, obtains branch chlorinated polynvinyl chloride (CPVC)；
Second step the branch chlorinated polynvinyl chloride (CPVC) prepared in the 5.7kg first step and 13kg dehydrated alcohol is added in stirred tank, together
When 0.2kg nano-titanium dioxide, 0.3kg plasticizer and 0.3kg defoaming agent are added thereto, be uniformly mixed to obtain main slurry
6.3kg epoxy resin and 18.2kg are added trifluoroethanol and are added in main slurry, is stirred to react 30- at 40-45 DEG C by material
40min obtains sticky slurry, as PVC water-repellent paint；Main slurry and fluorinated epoxy resin powder are now matched when the coating use
It is current, PVC water-repellent paint after configuration is good at 35 DEG C at a temperature of need in 8-9h using finishing, be otherwise easy solidification knot
Block；
The viscous paste prepared in second step is coated directly onto the surface of plate by third step, is solidified at 60-65 DEG C
20-30min, at this time one layer of PVC waterproof membrane of the surface recombination of plate.
Embodiment 10:
A kind of preparation method of PVC water-repellent paint, specific preparation process are as follows:
1kg polyvinyl chloride is added in 15L cyclohexanone the first step, leads to nitrogen 20- after stirring and dissolving into reaction vessel
0.46kg benzoyl peroxide is then added, after being uniformly mixed thereto in 30min into reaction vessel under nitrogen protection
1.83kg γ-(methacryloxypropyl) propyl trimethoxy silicane is added, is warming up to 120 DEG C of isothermal reaction 8- after being added dropwise completely
Then 10h carries out vacuum distillation and recycles solvent cyclohexanone therein, obtains branch chlorinated polynvinyl chloride (CPVC)；
Second step the branch chlorinated polynvinyl chloride (CPVC) prepared in the 5.7kg first step and 13kg dehydrated alcohol is added in stirred tank, together
When 0.2kg nano-titanium dioxide, 0.3kg plasticizer and 0.3kg defoaming agent are added thereto, be uniformly mixed to obtain main slurry
18.2kg is added trifluoroethanol and is added in main slurry, is stirred to react 30-40min at 40-45 DEG C, obtain water-repellent paint by material；
The viscous paste prepared in third step is coated directly onto the surface of plate by third step, is solidified at 60-65 DEG C
20-22h, at this time one layer of PVC waterproof membrane of the surface recombination of plate.
Embodiment 11:
The plate of one layer of PVC waterproof membrane of surface recombination in embodiment 4-10 is irradiated under identical ultraviolet light simultaneously
Then 100h, 150h, 200h, 250h observe the situation of change of waterproof film surface, the results are shown in Table 1:
PVC waterproof membrane PVC waterproof film surface dusting degree under different ultraviolet lights in 1 embodiment 4-10 of table
As shown in Table 1, the PVC waterproof membrane anti-aging property with higher prepared in embodiment 4 and embodiment 5, it is ultraviolet
Light irradiation 300h occurs still without the case where any dusting；And due to being used in branch chlorinated polynvinyl chloride (CPVC) preparation process in embodiment 6
Branching graft modification agent preparation process in, the r- aminopropyltriethoxywerene werene content of addition is more, causes trihydroxy methyl
The amino content being grafted in propane triglycidyl ether is reduced, so that the amino content in branching polyvinyl chloride chain is reduced,
In branch chlorinated polynvinyl chloride (CPVC) and fluorinated epoxy resin crosslinking curing, the fluorinated epoxy resin being crosslinked between branching polyvinyl chloride chain subtracts
It is few, so that unfluorinated epoxy resin is dispersed between coating, so that fluorinated epoxy resin dispersion is uneven in the coating of preparation
It is even, being unevenly distributed for fluorine element in coating is in turn resulted in, so that its ageing resistance reduces；Branching is poly- in embodiment 7 simultaneously
Vinyl chloride directly polymerize with γ-(methacryloxypropyl) propyl trimethoxy silicane, so that the branched polyethylene chain of preparation
Upper no amino, cannot carry out crosslinking fixation with fluorinated epoxy resin, so that fluorinated epoxy resin and branched polyethylene are not
Can be evenly dispersed, it is uneven in turn result in fluorine element dispersion, so that its ageing resistance reduces；Fluorinated epoxy in embodiment 8
The additional amount of resin reduces, and fluorine element content in coating is caused to reduce, and the ageing resistance of coating reduces, while 9 He of embodiment
Directly trifluoroethanol is added in coating in dope preparing process in embodiment 10, due to trifluoroethanol and branch chlorinated polynvinyl chloride (CPVC)
It is poor with the compatibility of epoxy resin, so that trifluoroethanol not can be uniformly dispersed in coating, greatly reduce coating
Anti-aging property.
Embodiment 12:
By the plate of one layer of PVC waterproof membrane of surface recombination in embodiment 4-10 temperature be 25 DEG C, humidity be 75% constant temperature
It is placed one week in constant humidity cabinet, according to GB4893.4-85 standard, carries out adhesive force survey with paint film adhesion multipurpose dry film detector
Examination observes paint film spalling situation under the microscope, and counts the lattice number of score infall paint film spalling, and calculating paint film spalling rate=
The lattice number of paint film spalling/whole cutting grid lattice number %, as a result as described in Table 2:
The adhesive force measurement result of the plate surface PVC composite membrane prepared in 2 embodiment 4-10 of table
As shown in Table 2, the PVC composite membrane adhesive force prepared in embodiment 4 and embodiment 5 is stronger, is difficult to realize removing, by
Structure is reticulated after fluorinated epoxy resin and branch chlorinated polynvinyl chloride (CPVC) are cross-curing, epoxy resin is dispersed in coating, by
In epoxy resin adhesive property with higher, so that adhesive force of the PVC film of preparation on plate is uniform and adheres to
Power is stronger, is not easily stripped；But the branching graft modification agent system as used in branch chlorinated polynvinyl chloride (CPVC) preparation process in embodiment 6
During standby, the r- aminopropyltriethoxywerene werene content of addition is more, causes on trihydroxymethylpropanyltri diglycidyl ether
The amino content of grafting is reduced, so that the amino content in branching polyvinyl chloride chain is reduced, in branch chlorinated polynvinyl chloride (CPVC) and fluorine
Changing cross linking of epoxy resin solidification amount reduces, so that the reticular structure formed after crosslinking does not thereby reduce its attachment closely by force
Degree；While since branch chlorinated polynvinyl chloride (CPVC) and epoxy resin cannot directly solidify crosslinking in embodiment 7 and embodiment 9, the two is direct
It is dispersed in coating, the adhesion property of branch chlorinated polynvinyl chloride (CPVC) is poor, and the adhesive ability of epoxy resin is stronger, and then adhesive force point
It dissipates unevenly, in turn results in its part and be easily peeled off, while since epoxy resin content is reduced in embodiment 8, so that applying
The adhesive force of material reduces, and when not adding epoxy resin in embodiment 10, the adhesive force of branch chlorinated polynvinyl chloride (CPVC) is lower, is easy to appear stripping
From.
Embodiment 13:
Plate after coating PVC coating in embodiment 4-10 and the plate without being coated with PVC coating are weighed, quality
Then two kinds of plates are impregnated 5 days in water simultaneously, are done the surface wipes of two kinds of plates after pulling out, so by respectively M0 and N0
After weigh, the quality of two kinds of plates is respectively M1 and N1, then calculates water absorption rate=[(M1-N1)-(M0- of PVC composite membrane
NO)]/(M0-NO) %, measurement result are as shown in table 3:
The water absorption rate test result of the PVC composite membrane prepared in 3 embodiment 4-10 of table
As shown in Table 3, the water absorption rate of the PVC composite membrane prepared in embodiment 4, embodiment 8 and embodiment 10 is lower, due to
Structure is reticulated after fluorinated epoxy resin and branch chlorinated polynvinyl chloride (CPVC) are cross-curing in embodiment 4, branch chlorinated polynvinyl chloride (CPVC) has higher
Hydrophobic performance, while it is grafted with a large amount of alkoxy grp, has hydrophobic performance, and the fluorine element being grafted on epoxy resin
Equally there is certain hydrophobic performance, so that the coating hydrophobic performance with higher of preparation, branch chlorinated polynvinyl chloride (CPVC) and fluorine
Changing the netted dense hydrophobic structure that epoxy resin is formed makes the water absorption rate of its coating lower；Due to the r- of introducing in embodiment 5
Aminopropyltriethoxywerene werene content is less, so that alkoxy group content reduces in coating, so that its hydrophobic performance
It reduces；While since polyvinyl chloride is directly grafted γ-(methacryloxypropyl) propyl trimethoxy in embodiment 7 and embodiment 9
Silane, so that child's polyvinyl chloride is connect and epoxy resin is not crosslinked, so that not forming reticular structure in coating, in turn
So that branch chlorinated polynvinyl chloride (CPVC) and fluorinated epoxy resin are unevenly distributed, so that its hydrophobic performance of part reduces.
Embodiment 14:
The plate that PVC composite membrane is compounded in embodiment 4-10 is individually positioned in 85 DEG C, 90 DEG C, 100 DEG C and 120 DEG C
5min is toasted in baking oven, then observes the form of PVC composite membrane, the results are shown in Table 4:
4 embodiment 4-10 plate surface PVC composite membrane of table toasts in 85 DEG C, 90 DEG C, 100 DEG C and 120 DEG C of baking oven
The variation of form when 5min
As shown in Table 4, embodiment 4, the film for preparing in embodiment 6 are still unchanged slightly soft at 160 DEG C at 120 DEG C
Change, and since the r- aminopropyltriethoxywerene werene content introduced in graft modification agent is less in embodiment 5, so that applying
Alkoxy group content reduces in material, so that the thermal stability of branch chlorinated polynvinyl chloride (CPVC) reduces, so that surface is just at 90 DEG C for film
Slightly soften, while since wherein branch chlorinated polynvinyl chloride (CPVC) and epoxy resin are not handed in embodiment 7 and embodiment 9, embodiment 10
Connection, so that branch chlorinated polynvinyl chloride (CPVC) cannot be dispersed in coating, causes the dispersion of siloxanes in coating uneven, in turn
So that its thermal stability reduces.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (6)
1. a kind of preparation method of PVC water-repellent paint, which is characterized in that specific preparation process is as follows:
A certain amount of polyvinyl chloride is added in cyclohexanone the first step, leads to nitrogen 20- after stirring and dissolving into reaction vessel
Benzoyl peroxide is then added in 30min into reaction vessel under nitrogen protection, and branch is added after being uniformly mixed thereto
Change graft modification agent, be warming up to 120 DEG C of isothermal reaction 8-10h after being added dropwise completely, it is therein molten then to carry out vacuum distillation recycling
Agent cyclohexanone obtains branch chlorinated polynvinyl chloride (CPVC)；
By epoxy resin adding into acetone stirring and dissolving, while trifluoroethanol is added, after mixing, often in second step thereto
Diisocyanate is added under temperature thereto, is stirred to react 5-6h, then heats to 80-85 DEG C of evaporation, obtains fluorinated epoxy resin
Powder；
The branch chlorinated polynvinyl chloride (CPVC) and dehydrated alcohol that prepare in the first step are added in stirred tank, while being added thereto by third step
Nano-titanium dioxide, plasticizer and defoaming agent are uniformly mixed to obtain main slurry, the fluorinated epoxy tree that will be prepared in second step
Cosmetics end is added in main slurry, is stirred to react 30-40min at 40-45 DEG C, obtains sticky slurry, and as PVC waterproof applies
Material；
The viscous paste prepared in third step is coated directly onto the surface of plate by the 4th step, solidifies 20- at 60-65 DEG C
30min, at this time one layer of PVC waterproof membrane of the surface recombination of plate.
2. a kind of preparation method of PVC water-repellent paint according to claim 1, which is characterized in that gather for every gram in the first step
Branching graft modification agent 1.83-1.86g is added in vinyl chloride, benzoyl peroxide 0.46-0.48g is added.
3. a kind of preparation method of PVC water-repellent paint according to claim 1, which is characterized in that branching graft modification agent
Specific preparation process it is as follows:
1. trihydroxymethylpropanyltri diglycidyl ether is added in reaction kettle, it is cooled to 5-10 DEG C, allyl is added thereto dropwise
Amine is warming up to 30-35 DEG C of reaction 1-1.5h after being stirred to react 3-4h, obtains colorless and transparent solution；
2. r- aminopropyltriethoxywerene werene is added into the reaction kettle of step 1., it is warming up to 80-90 DEG C and is stirred at reflux reaction
Then 9-10h is reduced to room temperature that ethylenediamine is added into reaction kettle, product is evaporated under reduced pressure by constant temperature back flow reaction 4-5h,
Obtain branching graft modification agent.
4. a kind of preparation method of PVC water-repellent paint according to claim 3, which is characterized in that every mole of trihydroxy methyl
Allylamine 1.01-1.02mol is added in propane triglycidyl ether, r- aminopropyltriethoxywerene werene 1-1.02mol is added,
Ethylenediamine 1.1-1.2mol is added.
5. a kind of preparation method of PVC water-repellent paint according to claim 1, which is characterized in that every gram of ring in second step
Trifluoroethanol 0.032-0.035mol is added in oxygen resin, wherein the ratio between amount of trifluoroethanol and diisocyanate species is 1:
1.1-1.2。
6. a kind of preparation method of PVC water-repellent paint according to claim 1, which is characterized in that each in PVC water-repellent paint
The parts by weight of component raw material are as follows: 57-62 parts of branch chlorinated polynvinyl chloride (CPVC), 63-67 parts of fluorinated epoxy resin powder, nano-titanium dioxide
2-3 parts, 3-5 parts of plasticizer, 3-5 parts of defoaming agent, 130-140 parts of dehydrated alcohol.
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| CN108084865A (en) * | 2017-12-15 | 2018-05-29 | 安徽省华腾农业科技有限公司 | A kind of preparation method of water-repellent paint |
| CN108913000A (en) * | 2017-04-11 | 2018-11-30 | 南宁马瑞娜装饰工程有限公司 | A kind of water-repellent paint and preparation method |
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| CN108913000A (en) * | 2017-04-11 | 2018-11-30 | 南宁马瑞娜装饰工程有限公司 | A kind of water-repellent paint and preparation method |
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