IT202000006412A1 - COATING COMPOSITION TO INCREASE HEAT DISSIPATION - Google Patents
COATING COMPOSITION TO INCREASE HEAT DISSIPATION Download PDFInfo
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- IT202000006412A1 IT202000006412A1 IT102020000006412A IT202000006412A IT202000006412A1 IT 202000006412 A1 IT202000006412 A1 IT 202000006412A1 IT 102020000006412 A IT102020000006412 A IT 102020000006412A IT 202000006412 A IT202000006412 A IT 202000006412A IT 202000006412 A1 IT202000006412 A1 IT 202000006412A1
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- 239000008199 coating composition Substances 0.000 title claims description 11
- 230000017525 heat dissipation Effects 0.000 title description 2
- 239000000203 mixture Substances 0.000 claims description 38
- 239000000049 pigment Substances 0.000 claims description 13
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 7
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910021389 graphene Inorganic materials 0.000 claims description 6
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 6
- 229920001225 polyester resin Polymers 0.000 claims description 6
- 239000004645 polyester resin Substances 0.000 claims description 6
- 150000004756 silanes Chemical class 0.000 claims description 2
- -1 siloxanes Chemical class 0.000 claims description 2
- 239000003973 paint Substances 0.000 description 8
- 238000003475 lamination Methods 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009423 ventilation Methods 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- 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
Description
DESCRIZIONE DESCRIPTION
del brevetto per invenzione industriale dal titolo: ?COMPOSIZIONE DI RIVESTIMENTO PER AUMENTARE LA DISSIPAZIONE DI CALORE? of the patent for industrial invention entitled:? COATING COMPOSITION TO INCREASE HEAT DISSIPATION?
Campo dell'invenzione Field of the invention
La presente invenzione si riferisce ad una composizione di rivestimento in particolare per aumentare la conducibilit? termica di una superficie. The present invention relates to a coating composition in particular for increasing the conductivity? of a surface.
E? noto che l?applicazione di vernici ad un substrato aumenta l?emissivit? termica del substrato. Tuttavia, questo vantaggio viene inficiato dallo spessore delle vernici applicate. AND? known that the application of paints to a substrate increases the emissivity? substrate thermal. However, this advantage is undermined by the thickness of the paints applied.
Gli spessori delle vernici tradizionali non possono essere ridotte pi? di un certo valore in quanto queste perderebbero le loro peculiari propriet? meccaniche. Per questo motivo l?emissivit? non ? mai stata considerata per un possibile efficientamento di un substrato. The thicknesses of traditional paints can not be reduced more? of a certain value as these would lose their peculiar properties? mechanical. For this reason the emissivity? Not ? never been considered for a possible efficiency of a substrate.
E? pertanto sentita la necessit? nell?arte di nuove vernici in grado di sfruttare questa propriet? che ? rimasta inespressa nei materiali. AND? therefore felt the need? in the art of new paints able to exploit this property? that ? remained unexpressed in the materials.
In particolare, ? sentita la necessit? di fornire composizioni di rivestimento che possano aumentare le capacit? di dissipazione termica di una superficie esposta ad una fonte di calore, qualunque sia la natura della superficie. In particular, ? felt the need? to provide coating compositions that can increase the capacities? of thermal dissipation of a surface exposed to a heat source, whatever the nature of the surface.
Lo scopo della presente invenzione ? pertanto quello di risolvere i problemi tecnici precedentemente menzionati. The purpose of the present invention? therefore that of solving the previously mentioned technical problems.
In particolare, ? scopo della presente invenzione quello di fornire una composizione di rivestimento in grado di aumentare la conducibilit? termica di una superficie di qualsiasi natura. In particular, ? purpose of the present invention is to provide a coating composition capable of increasing the conductivity? of a surface of any nature.
Lo scopo della presente invenzione ? raggiunto da una composizione di rivestimento secondo la rivendicazione 1, dal suo uso secondo la rivendicazione 5 e da un substrato rivestito con la composizione dell?invenzione secondo la rivendicazione 6. The purpose of the present invention? achieved by a coating composition according to claim 1, its use according to claim 5 and a substrate coated with the composition of the invention according to claim 6.
Vantaggiosamente l?uso della composizione dell?invenzione, preferibilmente con spessore 6-12 micron consente di ottenere un?importante resistenza chimicomeccanica e nello stesso tempo di esprimere al massimo il rendimento dell?emissivit? del substrato. Oltre all?emissivit? ulteriori studi hanno confermato che si osserva un aumento dello scambio termico per cui a 210?C si ha un aumento del 15% dello scambio termico rispetto alle vernici note nell?arte. Advantageously, the use of the composition of the invention, preferably with a thickness of 6-12 microns, allows to obtain an important chemical-mechanical resistance and at the same time to express the maximum efficiency of the emissivity. of the substrate. In addition to the emissivity? further studies have confirmed that an increase in heat exchange is observed so that at 210 ° C there is a 15% increase in heat exchange compared to paints known in the art.
L'invenzione sar? ora descritta con riferimento alle figure annesse, date a puro titolo di esempio non limitativo, in cui: The invention will be? now described with reference to the attached figures, given purely by way of non-limiting example, in which:
- la figura 1 ? un grafico che riporta i valori delle temperature misurate su un lamierino di acciaio trattato con la composizione dell?invenzione e sottoposto all?applicazione di un campo elettrico a confronto con i valori ottenuti con lo stesso lamierino non trattato; - figure 1? a graph showing the values of the temperatures measured on a steel sheet treated with the composition of the invention and subjected to the application of an electric field in comparison with the values obtained with the same untreated sheet;
- la figura 2 ? un grafico che riporta i valori della variazione della temperatura tra il lamierino trattato e quello non trattato della figura 1; - figure 2? a graph showing the values of the temperature variation between the treated and the untreated sheet of Figure 1;
- la figura 3 ? un grafico che riporta i valori delle temperature misurate su un lamierino di acciaio trattato con la composizione dell?invenzione additivata con un pigmento nero e sottoposto all?applicazione di un campo elettrico a confronto con i valori ottenuti con lo stesso lamierino trattato con una vernice epossidica dell?arte nota additivata con un pigmento nero; - figure 3? a graph showing the values of the temperatures measured on a steel sheet treated with the composition of the invention added with a black pigment and subjected to the application of an electric field in comparison with the values obtained with the same sheet treated with an epoxy paint of the known art added with a black pigment;
- la figura 4 ? un grafico che riporta i valori della variazione della temperatura tra i lamierini della figura 3; - figure 4? a graph showing the values of the temperature variation between the laminations of Figure 3;
- la figura 5 ? un grafico che riporta i valori della variazione della temperatura tra porzioni differenti dei lamierini della figura 3. - figure 5? a graph showing the values of the temperature variation between different portions of the laminations of Figure 3.
In particolare, viene fornita una composizione di rivestimento comprendente dal 15 al 40% in peso di silicio inorganico, dal 20 all?80% in peso di acetato di etile o acetato di butile e dal 2 al 5% di una resina poliestere sul peso totale della composizione e 1-3% in volume di grafene sul volume del silicio inorganico. In particular, a coating composition is provided comprising from 15 to 40% by weight of inorganic silicon, from 20 to 80% by weight of ethyl acetate or butyl acetate and from 2 to 5% of a polyester resin on the total weight. of the composition and 1-3% by volume of graphene on the volume of inorganic silicon.
Preferibilmente, la composizione comprende dal 15 al 30% in peso di silicio inorganico, dal 20 al 80% in peso di acetato di etile o acetato di butile e dal 2 al 4% di una resina poliestere sul peso totale della composizione e dall' 1 al 3% in volume di grafene sul volume del silicio inorganico. Preferably, the composition comprises from 15 to 30% by weight of inorganic silicon, from 20 to 80% by weight of ethyl acetate or butyl acetate and from 2 to 4% of a polyester resin on the total weight of the composition and from 1 to 3% by volume of graphene on the volume of inorganic silicon.
La composizione pu? inoltre comprendere 5-10% in peso di silani e/o 5-10 % in peso di silossani sul peso totale della composizione. The composition can? furthermore comprising 5-10% by weight of silanes and / or 5-10% by weight of siloxanes on the total weight of the composition.
La composizione di rivestimento dell?invenzione pu? comprendere inoltre un pigmento, ad esempio un pigmento nero. The coating composition of the invention can? further comprise a pigment, for example a black pigment.
Essa viene usata per aumentare la conducibilit? termica di una superficie. Vantaggiosamente la composizione dell?invenzione consente l?applicazione di un rivestimento molto sottile, di uno spessore compreso tra 5 e 20 ?m, preferibilmente 6-13 ?m, sopra la superficie da trattare a differenza dei 150 ?m necessari per le composizioni di rivestimento note nell?arte. It is used to increase the conductivity? of a surface. Advantageously, the composition of the invention allows the application of a very thin coating, with a thickness of between 5 and 20 µm, preferably 6-13 µm, on the surface to be treated, unlike the 150 µm necessary for the compositions of coating notes in the art.
Preferibilmente, la composizione secondo l?invenzione pu? essere usata per agevolare l?emissivit? delle superfici, ad esempio per consentire la realizzazione di motori elettrici in alluminio anzich? in acciaio, senza l?utilizzo di ventilazione. In tal modo, il metallo ? in grado di dissipare fino a 920 W/m<2 >di energia termica e in questo modo abbassare le temperature di esercizio del motore. Inoltre, la composizione crea una resistenza alla corrosione che favorisce l?uso di motori in alluminio. Preferably, the composition according to the invention can? be used to facilitate the emissivity? of the surfaces, for example to allow the construction of electric motors in aluminum instead of? in steel, without the use of ventilation. Thus, the metal? able to dissipate up to 920 W / m <2> of thermal energy and in this way lower the operating temperatures of the motor. In addition, the composition creates a corrosion resistance that favors the use of aluminum engines.
La composizione pu? inoltre essere utilizzata per schermare le onde elettromagnetiche e onde radio. The composition can? Also be used to shield electromagnetic waves and radio waves.
Ulteriori caratteristiche della presente invenzione risulteranno dalla descrizione che segue di alcuni esempi meramente illustrativi e non limitativi. Further characteristics of the present invention will emerge from the following description of some merely illustrative and non-limiting examples.
ESEMPIO 1 EXAMPLE 1
Una composizione secondo l?invenzione comprendente: 30g in peso di silicio inorganico, A composition according to the invention comprising: 30g by weight of inorganic silicon,
66,5g in peso di acetato di butile, 66.5g by weight of butyl acetate,
2g in peso di una resina poliestere, e 2g by weight of a polyester resin, e
5% in volume di grafene sul volume di silicio, 5% by volume of graphene on the volume of silicon,
? stata applicata ad una singola superficie di un lamierino di alluminio mediante verniciatura per formare uno strato di rivestimento di 8 ?m. Sul lamierino ? stata montata una resistenza elettrica da 27 ?. Per controllo, un?identica resistenza ? stata montata su un lamierino di alluminio non trattato con la composizione dell?invenzione. ? was applied to a single surface of an aluminum sheet by painting to form a coating layer of 8? m. On the sheet metal? a 27? electric resistance has been mounted. For control, an? Identical resistance? been mounted on a sheet of aluminum not treated with the composition of the invention.
Sono state quindi misurate le temperature superficiali in un punto centrale del lamierino e in un punto periferico dello stesso al variare della tensione di alimentazione della resistenza. La tensione viene applicata in parallelo alle due resistenze in modo da avere in entrambi i circuiti la stessa potenza dissipata. The surface temperatures were then measured in a central point of the lamination and in a peripheral point of the same as the resistance supply voltage varied. The voltage is applied in parallel to the two resistors in order to have the same dissipated power in both circuits.
I risultati ottenuti sono riportati nella tabella 1, nella tabella 2 e nelle Figure 1 e 2. The results obtained are reported in Table 1, Table 2 and Figures 1 and 2.
Tabella 1. Table 1.
T1: temperatura misurata in un punto centrale del lamierino trattato con la composizione dell?invenzione; T1: temperature measured in a central point of the sheet treated with the composition of the invention;
T2: temperatura misurata in un punto laterale del lamierino trattato con la composizione dell?invenzione; T2: temperature measured in a lateral point of the sheet treated with the composition of the invention;
T3: temperatura misurata in un punto centrale del lamierino non trattato con la composizione dell?invenzione; T3: temperature measured in a central point of the sheet not treated with the composition of the invention;
T4: temperatura misurata in un punto laterale del lamierino non trattato con la composizione dell?invenzione. T4: temperature measured in a lateral point of the sheet not treated with the composition of the invention.
Tabella 2 Table 2
ESEMPIO 2 EXAMPLE 2
L?esperimento dell?esempio 1 ? stato ripetuto con una composizione alla quale ? stato aggiunto 20% di un pigmento nero. The experiment of example 1? been repeated with a composition to which? 20% of a black pigment was added.
La composizione utilizzata pertanto ? la seguente: The composition used therefore? the following:
30g in peso di silicio inorganico, 30g by weight of inorganic silicon,
46,5g in peso di acetato di butile, 46.5g by weight of butyl acetate,
2g in peso di una resina poliestere, 2g by weight of a polyester resin,
20g in peso di pigmento nero, 20g by weight of black pigment,
5 % in volume di grafene sul volume di silicio. 5% by volume of graphene on the volume of silicon.
Come controllo ? stato usato un lamierino di alluminio verniciato su un lato con una vernice epossidica additivata con la stessa percentuale di pigmento nero. How do I check? An aluminum sheet was used painted on one side with an epoxy paint with the same percentage of black pigment.
I risultati ottenuti sono mostrati nelle tabelle 3, 4 e 5 e nelle Figure 3, 4 e 5. The results obtained are shown in Tables 3, 4 and 5 and in Figures 3, 4 and 5.
Tabella 3 Table 3
T1: temperatura misurata in un punto centrale del lamierino trattato con la composizione dell?invenzione additivata con un pigmento nero; T1: temperature measured in a central point of the sheet treated with the composition of the invention added with a black pigment;
T2: temperatura misurata in un punto laterale del lamierino trattato con la composizione dell?invenzione additivata con un pigmento nero; T2: temperature measured in a lateral point of the sheet treated with the composition of the invention added with a black pigment;
T3: temperatura misurata in un punto centrale del lamierino non trattato con la composizione dell?invenzione additivata con un pigmento nero; T3: temperature measured in a central point of the sheet not treated with the composition of the invention added with a black pigment;
T4: temperatura misurata in un punto laterale del lamierino non trattato con la composizione dell?invenzione additivata con un pigmento nero. T4: temperature measured in a lateral point of the sheet not treated with the composition of the invention added with a black pigment.
Tabella 4 Table 4
Tabella 5 Table 5
Dai valori riscontrati risulta evidente che la temperatura dei lamierini trattati con la composizione dell?invenzione additivata con un pigmento nero ? notevolmente inferiore a quella dei lamierini trattati con una vernice dell?arte nota. From the values found it is evident that the temperature of the laminations treated with the composition of the invention added with a black pigment? considerably lower than that of the laminations treated with a paint of the known art.
La differenza di temperatura ? soprattutto pi? marcata nel punto centrale dove ? applicata la potenza. The temperature difference? especially pi? marked at the central point where? power applied.
Infine l?uso della composizione dell?invenzione riduce la differenza di temperatura tra il punto centrale e la periferia del lamierino, ottenendo pertanto una temperatura pi? uniforme del lamierino. Finally, the use of the composition of the invention reduces the temperature difference between the central point and the periphery of the lamination, thus obtaining a lower temperature. uniform sheet.
ESEMPIO 3 EXAMPLE 3
Un lamierino di alluminio di spessore di 5 mm ? stato sottoposto al test di determinazione dell?emissivit?. An aluminum sheet with a thickness of 5 mm? was subjected to the emissivity determination test.
Il lamierino rivestito con la composizione dell?esempio 1 applicata con uno spessore di 11 micron ? stato analizzato a confronto con lo stesso lamierino non rivestito. The lamination coated with the composition of Example 1 applied with a thickness of 11 microns? was analyzed in comparison with the same uncoated sheet.
L?emissivit? ? stata misurata utilizzando il metodo standard ASTM C1371 ? 15 del dicembre 2015. The emissivity ? been measured using the ASTM C1371 standard method? 15 of December 2015.
I risultati ottenuti sono mostrati nella tabella 6. Anche in questo caso l?emissivit? ? stata misurata utilizzando il metodo standard ASTM C1371 ? 15 del dicembre 2015. The results obtained are shown in table 6. Also in this case the emissivity? ? been measured using the ASTM C1371 standard method? 15 of December 2015.
L?apparecchiatura utilizzata per la misurazione dell?emissivit? a temperatura ambiente ? l?emissometro ?AE1? (Device & Service Company). The equipment used for the measurement of emissivity? at room temperature? the emissometer? AE1? (Device & Service Company).
Il test ? stato eseguito determinando la normale emissivit? secondo lo standard ECSS-Q-ST-70-09 C.6. L?emissivit? superficiale del campione ? stata misurata utilizzando un emissometro che rispetto lo standard ASTM C1371 ? 15. The test ? was performed by determining the normal emissivity? according to ECSS-Q-ST-70-09 C.6 standard. The emissivity surface of the sample? been measured using an emissometer that complies with the ASTM C1371 standard? 15.
Dopo l?opportuna calibrazione utilizzando due standard con emissivit? nota (s/n 1759 con ?= 0,87 e s/n 1730 con ? = 0,06 forniti da Devices & Services Company), questo strumento produce un voltaggio in uscita che ? proporzionale all?emissivit? della superficie analizzata. After the proper calibration using two standards with emissivity? note (s / n 1759 with? = 0.87 and s / n 1730 with? = 0.06 provided by Devices & Services Company), this instrument produces an output voltage that? proportional to the emissivity? of the analyzed surface.
Le condizioni ambientali durante il test sono state le seguenti: (20?1)?C temperatura media e (50?5)% umidit? relativa. The environmental conditions during the test were as follows: (20? 1)? C average temperature and (50? 5)% humidity? relative.
I risultati sono riportati in tabella 7 The results are reported in table 7
Tabella 6 Table 6
Come ? possibile osservare dalla tabella sopra riportata la composizione della presente invenzione ? in grado di creare emissivit? a bassi spessori. How ? Is it possible to observe the composition of the present invention from the above table? able to create emissivity? at low thicknesses.
Lo stesso test ? stato ripetuto con la stessa composizione e sono stati ottenuti i risultati riportati nella tabella 7. The same test? was repeated with the same composition and the results reported in Table 7 were obtained.
Tabella 7 Table 7
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| Application Number | Priority Date | Filing Date | Title |
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| IT102020000006412A IT202000006412A1 (en) | 2020-03-26 | 2020-03-26 | COATING COMPOSITION TO INCREASE HEAT DISSIPATION |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102020000006412A IT202000006412A1 (en) | 2020-03-26 | 2020-03-26 | COATING COMPOSITION TO INCREASE HEAT DISSIPATION |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107189546A (en) * | 2017-06-29 | 2017-09-22 | 太仓市顺昌锻造有限公司 | A kind of ink |
| CN107793823A (en) * | 2017-11-21 | 2018-03-13 | 广东顺德洋紫薇化工有限公司 | Graphene is modified heat conduction coating ink and preparation method |
| CN109326202A (en) * | 2018-09-07 | 2019-02-12 | 深汕特别合作区昌茂粘胶新材料有限公司 | A kind of shielding special type heat dissipation polyimides electronic tag material and preparation method thereof |
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2020
- 2020-03-26 IT IT102020000006412A patent/IT202000006412A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107189546A (en) * | 2017-06-29 | 2017-09-22 | 太仓市顺昌锻造有限公司 | A kind of ink |
| CN107793823A (en) * | 2017-11-21 | 2018-03-13 | 广东顺德洋紫薇化工有限公司 | Graphene is modified heat conduction coating ink and preparation method |
| CN109326202A (en) * | 2018-09-07 | 2019-02-12 | 深汕特别合作区昌茂粘胶新材料有限公司 | A kind of shielding special type heat dissipation polyimides electronic tag material and preparation method thereof |
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