CN116218295B - Low-density high-damping PVC (polyvinyl chloride) coating and preparation method thereof - Google Patents
Low-density high-damping PVC (polyvinyl chloride) coating and preparation method thereof Download PDFInfo
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- CN116218295B CN116218295B CN202310187820.5A CN202310187820A CN116218295B CN 116218295 B CN116218295 B CN 116218295B CN 202310187820 A CN202310187820 A CN 202310187820A CN 116218295 B CN116218295 B CN 116218295B
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- 238000013016 damping Methods 0.000 title claims abstract description 76
- 238000000576 coating method Methods 0.000 title claims abstract description 46
- 239000011248 coating agent Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 229920000915 polyvinyl chloride Polymers 0.000 title description 32
- 239000004800 polyvinyl chloride Substances 0.000 title description 32
- 239000011347 resin Substances 0.000 claims abstract description 64
- 229920005989 resin Polymers 0.000 claims abstract description 64
- 239000004014 plasticizer Substances 0.000 claims abstract description 49
- 239000000945 filler Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 18
- 239000013543 active substance Substances 0.000 claims abstract description 14
- 239000012767 functional filler Substances 0.000 claims abstract description 14
- 238000013040 rubber vulcanization Methods 0.000 claims abstract description 8
- WQTQAWKFHJCUML-UHFFFAOYSA-N CC(COC=O)OCC(C)OC=O Chemical group CC(COC=O)OCC(C)OC=O WQTQAWKFHJCUML-UHFFFAOYSA-N 0.000 claims abstract description 4
- ZVFDTKUVRCTHQE-UHFFFAOYSA-N Diisodecyl phthalate Chemical group CC(C)CCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC(C)C ZVFDTKUVRCTHQE-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 43
- 238000002156 mixing Methods 0.000 claims description 42
- 238000003756 stirring Methods 0.000 claims description 36
- 238000006116 polymerization reaction Methods 0.000 claims description 12
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 8
- 239000003963 antioxidant agent Substances 0.000 claims description 7
- 230000003078 antioxidant effect Effects 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 7
- 229920002647 polyamide Polymers 0.000 claims description 7
- 239000013008 thixotropic agent Substances 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 6
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 claims description 4
- 239000002318 adhesion promoter Substances 0.000 claims description 4
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 3
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 229910021485 fumed silica Inorganic materials 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 150000002978 peroxides Chemical class 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229940096522 trimethylolpropane triacrylate Drugs 0.000 claims 2
- 230000001737 promoting effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 17
- 238000005507 spraying Methods 0.000 abstract description 12
- 239000003973 paint Substances 0.000 abstract description 10
- 238000007306 functionalization reaction Methods 0.000 abstract description 3
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical group CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 20
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000012258 stirred mixture Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000010426 asphalt Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- 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
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/04—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C09D127/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- 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
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C09D7/65—Additives macromolecular
-
- 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
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
-
- 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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Vibration Prevention Devices (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The application relates to a low-density high-damping PVC coating and a preparation method thereof, wherein the coating at least comprises the following components in percentage by mass: 15 to 30 percent of common plasticizer, 5 to 10 percent of high temperature resistant damping plasticizer, 4 to 8 percent of quick plasticizing plasticizer, 0.8 to 1.2 percent of tackifier, 0.5 to 2 percent of functional filler, 0.1 to 0.5 percent of rubber vulcanization assistant active agent, 0.1 to 0.3 percent of cross-linking agent, 2 to 5 percent of high damping filler, 10 to 20 percent of light filler and 40 to 50 percent of PVC paste resin. Wherein the common plasticizer is diisononyl phthalate, the high-temperature resistant damping plasticizer is diisodecyl phthalate, and the quick plasticizing plasticizer is dipropylene glycol diformate. The high-temperature-resistant damping type paint is endowed with more functionalization by adding 5-10% of high-temperature-resistant damping type plasticizer and 0.5-2% of functional filler, so that the complexity of the whole car spraying process is reduced, and the paint also has 10-20% of light filler, so that the paint has lighter weight after being sprayed, and the light-weight requirement of the whole car is met.
Description
Technical Field
The application relates to the technical field of automotive coatings, in particular to a low-density high-damping PVC coating and a preparation method thereof.
Background
With the continuous progress and maturity of the automobile industry, the automobile is taken as a riding instead of walking tool, and meanwhile, the comfort, the economy and the environmental protection of the automobile are also required to be considered. In the development process of automobiles, the automobile body structure of the automobiles gradually goes from a single steel structure to an aluminum space frame structure to a composite material frameless automobile body, and the weight of the whole automobile is lighter. Therefore, when the vehicle body is coated for spraying, the requirements of corrosion resistance, sealing, noise reduction and the like of the whole vehicle are required to be met, and the requirements of the quality of the vehicle body are met by spraying coatings with different functions on different parts of the vehicle body.
In the traditional vehicle body spraying process, PVC stone-impact-resistant paint is required to be sprayed on the outer side of a vehicle body bottom plate to meet the corrosion-resistant requirement of the bottom plate, and LASD (liquid application muffler: coating sprayed on a vehicle frame can absorb sound and vibration) or asphalt damping film is required to be sprayed on the inner side of the bottom plate, so that vehicle body resonance is reduced, and the noise of the whole vehicle is reduced. The total amount of the finished automobile to the products is about 15-20 kg, the types of the used paint are more, the complexity of the spraying technology of the finished automobile is increased, the consumption is larger, and the weight of the automobile body is increased.
Therefore, the traditional whole vehicle spray coating increases the complexity of the spray coating process to a certain extent and reduces the weight of the vehicle body.
Disclosure of Invention
Based on the above, it is necessary to provide a low-density high-damping PVC coating and a preparation method thereof, which can simplify the whole vehicle spraying process and improve the weight reduction of the whole vehicle.
In a first aspect, the application provides a low-density high-damping PVC coating, which at least comprises the following components in percentage by mass:
15-30% of a common plasticizer;
5-10% of high-temperature resistant damping plasticizer;
4% -8% of a quick plasticizing plasticizer;
0.8 to 1.2 percent of tackifier;
0.5 to 2 percent of functional filler;
0.1 to 0.5 percent of rubber vulcanization-assisting active agent;
0.1 to 0.3 percent of cross-linking agent;
2% -5% of high damping type filler;
10% -20% of light filler;
40% -50% of PVC paste resin;
The high-temperature-resistant damping type plasticizer is diisodecyl phthalate, and the quick plasticizing type plasticizer is dipropylene glycol diformate.
In one embodiment, the adhesion promoter is one or both of a polyamide-based and a polyurethane-based adhesion promoter.
In one embodiment, the functional filler is fumed silica having a moisture barrier calcium oxide and thixotropic agent content of 99.8% or more and an antioxidant zinc oxide.
In one embodiment, the rubber vulcanization accelerator is one or more of trimethylolpropane triacrylate (TMPTA), trimethylolpropane trimethacrylate (TMPTAMA), and Ethylene Glycol Diacrylate (EGDA).
In one embodiment, the crosslinking agent is dicumyl peroxide or di-t-butylperoxyisopropyl benzene in a peroxide crosslinking agent.
In one embodiment, the high damping type filler is one or more of mica powder, needle-shaped powder and nano calcium carbonate.
In one embodiment, the lightweight filler is borosilicate with a particle size of 5-110 μm, a true density of 0.2-0.7 g/cm 3, and a maximum compressive strength of 20 megapascals.
In one embodiment, the PVC paste resin is one or more of a first homo paste resin, a second homo paste resin and a third homo paste resin;
The first homo-paste resin is homo-paste resin with the polymerization degree of 1700-1950 and the viscosity of 153-173 lm/g, the second homo-paste resin is homo-paste resin with the polymerization degree of 1000-1200 and the viscosity of 80-100 lm/g, and the third homo-paste resin is homo-paste resin with the polymerization degree of 1400-1600 and the viscosity of 90-110 lm/g.
In a second aspect, the present application provides a method for preparing a low-density high-damping PVC coating according to the first aspect of the present application, the method comprising:
Adding 15-30% by mass of common plasticizer, 5-10% by mass of high-temperature-resistant damping plasticizer and 4-8% by mass of quick plasticizing plasticizer into a mixing kettle to obtain a first mixture;
Stirring the first mixture in the mixing kettle at a rotating speed of 26 revolutions per minute, and adding 0.8-1.2% by mass of tackifier, 0.5-2% by mass of functional filler, 0.1-0.5% by mass of rubber vulcanization assistant active agent and 0.1-0.3% by mass of cross-linking agent to obtain a second mixture;
Controlling the mixing kettle to start a dust removing device, and adding 2-5% by mass of high damping filler and 10-20% by mass of light filler into the second mixture to obtain a third mixture;
continuously stirring the third mixture by controlling the mixing kettle for more than three minutes, and controlling the temperature in the mixing kettle to be less than 35 ℃ to obtain a fourth mixture;
Adding 40-50% of PVC paste resin by mass percent into the fourth mixture, and controlling the mixing kettle to continuously stir for more than 15 minutes to obtain a fifth mixture;
And transferring the fifth mixture into a curing tank, controlling the curing time of the fifth mixture to be more than 16 hours, and vacuumizing for more than 30 minutes to obtain the low-density high-damping PVC coating.
According to the low-density high-damping PVC coating and the preparation method thereof, the high-temperature-resistant damping type plasticizer with the mass percentage of 5-10% and the functional filler with the mass percentage of 0.5-2% are added, so that the coating can reduce noise and has the function of asphalt damping films, more functionalization is given to the prepared coating, different coatings are not required to be sprayed on the inner side and the outer side of a whole vehicle bottom plate in the whole vehicle spraying process, and the low-density high-damping PVC coating prepared by the application can be completely sprayed, and can achieve the effects of noise reduction and damping, and the complexity of the whole vehicle spraying process is reduced to a certain extent. In addition, the paint also has 10-20% of light filler by mass percent, so that the paint has lighter mass after being sprayed, and the light-weight requirement of the whole car is met.
Drawings
FIG. 1 is a flow chart of a method for preparing a low density high damping PVC coating according to an embodiment of the application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present application for the purpose of illustration only and do not represent the only embodiment.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.
Unless defined otherwise, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used in the description of the present application includes any and all combinations of one or more of the associated listed items.
In one embodiment, the low-density high-damping PVC coating at least comprises the following components in percentage by mass: 15 to 30 percent of common plasticizer, 5 to 10 percent of high temperature resistant damping plasticizer, 4 to 8 percent of quick plasticizing plasticizer, 0.8 to 1.2 percent of tackifier, 0.5 to 2 percent of functional filler, 0.1 to 0.5 percent of rubber vulcanization assistant active agent, 0.1 to 0.3 percent of cross-linking agent, 2 to 5 percent of high damping filler, 10 to 20 percent of light filler and 40 to 50 percent of PVC paste resin.
Wherein the common plasticizer is diisononyl phthalate, the high-temperature resistant damping plasticizer is diisodecyl phthalate, and the quick plasticizing plasticizer is dipropylene glycol diformate. The tackifier is one or two of polyamide and polyurethane tackifier, the functional filler is fumed silica with moisture-proof agent calcium oxide and thixotropic agent content of more than 99.8% and antioxidant zinc oxide, the rubber vulcanization-assisting active agent is one or more of trimethylolpropane triacrylate (TMPTA), trimethylolpropane trimethacrylate (TMPTAMA) and Ethylene Glycol Diacrylate (EGDA), the crosslinking agent is dicumyl peroxide or di-tert-butyl peroxyisopropyl benzene in peroxide crosslinking agent, and the high-damping filler is one or more of mica powder, needle powder and nano calcium carbonate. The light filler is borosilicate with the grain diameter of 5-110 mu m, the true density of 0.2-0.7 g/cm 3 and the highest compressive strength of 20 megapascals.
The PVC paste resin is one or more of a first homopolymerizing paste resin, a second homopolymerizing paste resin and a third homopolymerizing paste resin, wherein the first homopolymerizing paste resin is the homopolymerizing paste resin with the polymerization degree of 1700-1950 and the viscosity of 153-173 lm/g, the second homopolymerizing paste resin is the homopolymerizing paste resin with the polymerization degree of 1000-1200 and the viscosity of 80-100 lm/g, and the third homopolymerizing paste resin is the homopolymerizing paste resin with the polymerization degree of 1400-1600 and the viscosity of 90-110 lm/g.
According to the low-density high-damping PVC coating, the high-temperature-resistant damping type plasticizer with the mass percentage of 5% -10% and the functional filler with the mass percentage of 0.5% -2% are added, so that the coating can reduce noise and has the effect of an asphalt damping film, more functionalization is given to the prepared coating, different coatings are not required to be sprayed on the inner side and the outer side of a whole vehicle soleplate in the whole vehicle spraying process, and the low-density high-damping PVC coating prepared by the application can be sprayed completely, and can achieve the effects of noise reduction and damping, and the complexity of the whole vehicle spraying process is reduced to a certain extent. In addition, the paint also has 10-20% of light filler by mass percent, so that the paint has lighter mass after being sprayed, and the light-weight requirement of the whole car is met.
As shown in fig. 1, in one embodiment, a method for preparing a low-density high-damping PVC paint, includes the steps of:
and step S110, adding 15-30% by mass of common plasticizer, 5-10% by mass of high-temperature-resistant damping plasticizer and 4-8% by mass of quick plasticizing plasticizer into a mixing kettle to obtain a first mixture.
Specifically, a common plasticizer with the mass percentage of 15-30%, a high-temperature-resistant damping plasticizer with the mass percentage of 5-10% and a quick plasticizing plasticizer with the mass percentage of 4-8% are added into a mixing kettle to obtain a mixed material, namely a first mixture.
Step S120, stirring the first mixture in a mixing kettle at a rotating speed of 26 revolutions per minute, and adding 0.8-1.2% by mass of tackifier, 0.5-2% by mass of functional filler, 0.1-0.5% by mass of rubber vulcanization assistant active agent and 0.1-0.3% by mass of cross-linking agent to obtain a second mixture.
Specifically, on the basis of step S110, the first mixture is stirred in a mixing kettle at a rotational speed of 26 revolutions per minute, and 0.8 to 1.2 mass percent of tackifier, 0.5 to 2 mass percent of functional filler, 0.1 to 0.5 mass percent of rubber vulcanization assistant active agent and 0.1 to 0.3 mass percent of cross-linking agent are added to obtain a mixed material, namely a second mixture.
And S130, controlling the mixing kettle to start a dust removing device, and adding 2-5% of high damping filler and 10-20% of light filler by mass percent into the second mixture to obtain a third mixture.
Specifically, on the basis of step S120, the mixing kettle is controlled to start the dust removing device, and the second mixture is added with 2-5% by mass of high damping filler and 10-20% by mass of light filler to obtain a further mixture, namely a third mixture.
And step S140, controlling the mixing kettle to continuously stir the third mixture for more than three minutes, and controlling the temperature in the mixing kettle to be less than 35 ℃ to obtain a fourth mixture.
Specifically, based on step S130, the third mixture is continuously stirred by controlling the mixing kettle, the stirring time is more than three minutes, and the temperature in the mixing kettle is controlled to be less than 35 ℃, so as to obtain a stirred mixture, namely a fourth mixture.
And step S150, adding 40-50% by mass of PVC paste resin into the fourth mixture, and controlling the mixing kettle to continuously stir for more than 15 minutes to obtain a fifth mixture.
Specifically, based on the step S140, adding 40% -50% of PVC paste resin by mass percentage into the mixed material after stirring, and controlling the mixing kettle to continuously stir for more than 15 minutes, so as to obtain a to-be-cured mixed material, namely a fifth mixture.
And step S160, transferring the fifth mixture into a curing tank, controlling the curing time of the fifth mixture to be more than 16 hours, and vacuumizing the curing tank for more than 30 minutes to obtain the low-density high-damping PVC coating.
Specifically, the mixture to be cured obtained in the step S150 is moved into a curing tank, the curing time of the curing tank is controlled to be more than 16 hours, the vacuumizing time is controlled to be more than 30 minutes, and finally the required low-density high-damping PVC coating is obtained.
Next, the low-density high-damping PVC coating is further described by examples 1 to 4, in which the homo-paste resin having a polymerization degree of 1700 to 1950 and a viscosity of 153 to 173lm/g is replaced with 1# paste resin, the homo-paste resin having a polymerization degree of 1000 to 1200 and a viscosity of 80 to 100lm/g is replaced with 2# paste resin, the homo-paste resin having a polymerization degree of 1400 to 1600 and a viscosity of 90 to 110lm/g is replaced with 3# paste resin, the mixing tank is a WSH horizontal mixing tank, and the curing tank is a 20-stage PVC curing tank.
Example 1:
Firstly, adding 20% of common plasticizer, 8% of high-temperature resistant damping plasticizer and 5% of quick plasticizing plasticizer into a mixing kettle, stirring materials added into the reaction kettle at a rotating speed of 26 revolutions per minute, adding 1% of polyamide tackifier, 0.5% of thixotropic agent, 0.5% of moisture-proof agent, 1% of antioxidant, 0.3% of rubber vulcanization-assisting active agent and 0.2% of cross-linking agent in the stirring process, and continuously stirring to obtain further mixed materials. Starting a dust removing device in the stirring process, adding 5% by mass of high damping filler and 15% by mass of light filler, controlling the stirring time to be more than 3 minutes, controlling the temperature in a mixing kettle to be less than 35 ℃, and then adding 20% by mass of 1# paste resin, 13.5% by mass of 2# paste resin and 10% by mass of 3# paste resin, so as to finish feeding. After the material feeding is completed, the stirring time of the mixed materials in the mixing kettle exceeds 15 minutes, and the temperature in the mixing kettle is still lower than 35 ℃. And finally, transferring the stirred mixture into a curing tank for curing, wherein the curing time is controlled to be more than 16 hours, and the vacuumizing time is more than 30 minutes, so that the low-density high-damping PVC coating is obtained.
Example 2:
Firstly, adding 20% of common plasticizer, 8% of high-temperature resistant damping plasticizer and 5% of quick plasticizing plasticizer into a mixing kettle, stirring materials added into the reaction kettle at a rotating speed of 26 revolutions per minute, adding 1% of polyamide tackifier, 0.5% of thixotropic agent, 0.5% of moisture-proof agent, 1% of antioxidant, 0.3% of rubber vulcanization-assisting active agent and 0.2% of cross-linking agent in the stirring process, and continuously stirring to obtain further mixed materials. Starting a dust removing device in the stirring process, adding 5% by mass of high damping filler and 18% by mass of light filler, controlling the stirring time to be more than 3 minutes, controlling the temperature in a mixing kettle to be less than 35 ℃, and then adding 17% by mass of 1# paste resin, 13.5% by mass of 2# paste resin and 10% by mass of 3# paste resin, so as to finish feeding. After the material feeding is completed, the stirring time of the mixed materials in the mixing kettle exceeds 15 minutes, and the temperature in the mixing kettle is still lower than 35 ℃. And finally, transferring the stirred mixture into a curing tank for curing, wherein the curing time is controlled to be more than 16 hours, and the vacuumizing time is more than 30 minutes, so that the low-density high-damping PVC coating is obtained.
Example 3:
firstly, adding 20% of common plasticizer, 8% of high-temperature resistant damping plasticizer and 5% of quick plasticizing plasticizer into a mixing kettle, stirring materials added into the reaction kettle at a rotating speed of 26 revolutions per minute, adding 1% of polyamide tackifier, 0.5% of thixotropic agent, 0.5% of moisture-proof agent, 1% of antioxidant, 0.3% of rubber vulcanization-assisting active agent and 0.2% of cross-linking agent in the stirring process, and continuously stirring to obtain further mixed materials. Starting a dust removing device in the stirring process, adding 5% by mass of high damping filler and 20% by mass of light filler, controlling the stirring time to be more than 3 minutes, controlling the temperature in a mixing kettle to be less than 35 ℃, and then adding 15% by mass of 1# paste resin, 13.5% by mass of 2# paste resin and 10% by mass of 3# paste resin, so as to finish feeding. After the material feeding is completed, the stirring time of the mixed materials in the mixing kettle exceeds 15 minutes, and the temperature in the mixing kettle is still lower than 35 ℃. And finally, transferring the stirred mixture into a curing tank for curing, wherein the curing time is controlled to be more than 16 hours, and the vacuumizing time is more than 30 minutes, so that the low-density high-damping PVC coating is obtained.
Example 4:
Firstly, adding 20% of common plasticizer, 8% of high-temperature resistant damping plasticizer and 5% of quick plasticizing plasticizer into a mixing kettle, stirring materials added into the reaction kettle at a rotating speed of 26 revolutions per minute, adding 1% of polyamide tackifier, 0.5% of thixotropic agent, 0.5% of moisture-proof agent, 1% of antioxidant, 0.3% of rubber vulcanization-assisting active agent and 0.2% of cross-linking agent in the stirring process, and continuously stirring to obtain further mixed materials. Starting a dust removing device in the stirring process, adding 5% by mass of high damping filler and 18% by mass of light filler, controlling the stirring time to be more than 3 minutes, controlling the temperature in a mixing kettle to be less than 35 ℃, and then adding 17% by mass of 1# paste resin, 11.5% by mass of 2# paste resin and 12% by mass of 3# paste resin, so as to finish feeding. After the material feeding is completed, the stirring time of the mixed materials in the mixing kettle exceeds 15 minutes, and the temperature in the mixing kettle is still lower than 35 ℃. And finally, transferring the stirred mixture into a curing tank for curing, wherein the curing time is controlled to be more than 16 hours, and the vacuumizing time is more than 30 minutes, so that the low-density high-damping PVC coating is obtained.
Analytical test results for examples 1-4 are shown in Table 1:
TABLE 1
As can be seen from Table 1 in combination with examples 1-4, there is a direct relationship between the amount of light filler in the coating and the damping value of the coating, but when the mass percent of light filler exceeds 18%, the damping value of the coating tends to decrease. When the mass percentage of the light filler is fixed, the proportion of the mass percentage of the No. 2 paste resin is directly related to the damping value of the coating, and when the mass percentage of the No. 2 paste resin is less than 13.5%, the damping value of the coating has a descending trend. When the mass percentage of the light filler is fixed at 18%, the mass percentage of the 1# paste resin is 17%, and the mass percentage of the 2# paste resin is 13.5, the damping value of the coating is maximum.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (8)
1. The low-density high-damping PVC coating is characterized by at least comprising the following components in percentage by mass:
15-30% of a common plasticizer;
5-10% of high-temperature resistant damping plasticizer;
4% -8% of a quick plasticizing plasticizer;
0.8 to 1.2 percent of tackifier;
0.5 to 2 percent of functional filler;
0.1 to 0.5 percent of rubber vulcanization-assisting active agent;
0.1 to 0.3 percent of cross-linking agent;
2% -5% of high damping type filler;
18% of light filler;
17% of a first homo-paste resin;
13.5% of a second homo-paste resin;
a third homo-paste resin 10%;
the first homo-paste resin, the second homo-paste resin and the third homo-paste resin are PVC paste resins;
The high-temperature-resistant damping type plasticizer is diisodecyl phthalate, and the quick plasticizing type plasticizer is dipropylene glycol diformate;
The first homo-paste resin is homo-paste resin with the polymerization degree of 1700-1950 and the viscosity of 153-173 lm/g, the second homo-paste resin is homo-paste resin with the polymerization degree of 1000-1200 and the viscosity of 80-100 lm/g, and the second homo-paste resin is homo-paste resin with the polymerization degree of 1400-1600 and the viscosity of 90-110 lm/g.
2. The low density, high damping PVC coating according to claim 1, wherein the adhesion promoter is one or both of polyamide and polyurethane type adhesion promoters.
3. The low density, high damping PVC coating according to claim 1, wherein the functional filler is fumed silica with a moisture barrier calcium oxide and thixotropic agent content of 99.8% or more and an antioxidant zinc oxide.
4. The low density, high damping PVC coating according to claim 1, wherein the rubber vulcanization promoting active agent is one or more of trimethylol propane triacrylate (TMPTA), trimethylol propane trimethacrylate (TMPTMA), ethylene Glycol Diacrylate (EGDA).
5. The low density, high damping PVC coating according to claim 1, wherein the cross-linking agent is dicumyl peroxide or di-t-butylperoxyisopropyl benzene in a peroxide cross-linking agent.
6. The low-density high-damping PVC coating according to claim 1, wherein the high-damping filler is one or more of mica powder, needle-like powder and nano calcium carbonate.
7. The low-density high-damping PVC coating according to claim 1, wherein the lightweight filler is borosilicate with a particle size of 5-110 μm, a true density of 0.2-0.7 g/cm 3 and a maximum compressive strength of 20 mpa.
8. A method for preparing a low density high damping PVC coating according to any one of claims 1 to 7, comprising:
Adding 15-30% by mass of common plasticizer, 5-10% by mass of high-temperature-resistant damping plasticizer and 4-8% by mass of quick plasticizing plasticizer into a mixing kettle to obtain a first mixture;
Stirring the first mixture in the mixing kettle at a rotating speed of 26 revolutions per minute, and adding 0.8-1.2% by mass of tackifier, 0.5-2% by mass of functional filler, 0.1-0.5% by mass of rubber vulcanization assistant active agent and 0.1-0.3% by mass of cross-linking agent to obtain a second mixture;
Controlling the mixing kettle to start a dust removing device, and adding 2-5% by mass of high damping filler and 10-20% by mass of light filler into the second mixture to obtain a third mixture;
continuously stirring the third mixture by controlling the mixing kettle for more than three minutes, and controlling the temperature in the mixing kettle to be less than 35 ℃ to obtain a fourth mixture;
Adding 17% by mass of a first homo-paste resin, 13.5% by mass of a second homo-paste resin and 10% by mass of a third homo-paste resin into the fourth mixture;
And controlling the mixing kettle to continuously stir for more than 15 minutes to obtain a fifth mixture;
And transferring the fifth mixture into a curing tank, controlling the curing time of the fifth mixture to be more than 16 hours, and vacuumizing for more than 30 minutes to obtain the low-density high-damping PVC coating.
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