TWI401308B - Nano-scale heat sink material - Google Patents
Nano-scale heat sink material Download PDFInfo
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- TWI401308B TWI401308B TW97150291A TW97150291A TWI401308B TW I401308 B TWI401308 B TW I401308B TW 97150291 A TW97150291 A TW 97150291A TW 97150291 A TW97150291 A TW 97150291A TW I401308 B TWI401308 B TW I401308B
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本發明提出一種奈米散熱材料；更進一步言之，本發明係有關於一種低成本且具有極佳散熱效能之高效奈米散熱材料。The present invention provides a nano heat dissipating material; more particularly, the present invention relates to a high efficiency nano heat dissipating material which is low in cost and has excellent heat dissipating performance.
散熱材料可應用於各種方面，例如作為膏體、塗料或塑料等，搭配高熱電子元件協助其散熱。The heat-dissipating material can be applied to various aspects, such as paste, paint or plastic, with high-heat electronic components to help it dissipate heat.
在散熱材料開發過程中，如何兼顧成本考量，在儘可能低的成本下製作出具有高散熱效能的散熱材料，乃為重點。In the development process of heat dissipation materials, how to balance cost considerations and produce heat dissipation materials with high heat dissipation performance at the lowest possible cost is the focus.
日商KYOTOKU公司型號Y-500的散熱膏為目前市面上具代表性的產品，其熱傳導率約在2.8 W/mK左右。 本發明的目的是以較低的成本達成匹配或更佳的效果。The heat-dissipating paste of Japanese manufacturer KYOTOKU model Y-500 is a representative product on the market, and its thermal conductivity is about 2.8 W/mK. The object of the invention is to achieve a match or better effect at a lower cost.
有鑒於以上所述，本發明乃提出一種低成本且具有極佳散熱效能之高效奈米散熱材料。In view of the above, the present invention proposes a high-efficiency nano heat-dissipating material which is low in cost and has excellent heat dissipation performance.
根據本發明，奈米散熱材料中包含分散劑與固含量，分散劑可為矽油、高分子塗料或塑料，固含量中包含主劑、金屬粉末、添加劑，其中主劑選自氮化鋁、或氮化硼、或碳化矽，金屬粉末為鋁粉或銅粉，添加劑為以下之一或兩者以上之複合材料：(1)奈米銀或奈米氧化鋅；或 (2)奈米碳片(graphene)或單壁奈米碳管(SWCNT, Single-Wall Carbon Nano-Tube)或多壁奈米碳管(MWCNT, Multiple-Wall Carbon Nano-Tube)和奈米氧化鋅之複合材料、或奈米矽烷和奈米氧化鋅之複合材料、或石墨和奈米氧化鋅之複合材料、或石墨加奈米氧化鋅加奈米氧化矽之複合材料、或奈米黏土(Nanoclay)和奈米氧化鋅之複合材料、或奈米黏土加奈米氧化鋅加奈米氧化矽之複合材料、或奈米銀與奈米氧化鋅之複合材料、或奈米銀與奈米黏土之複合材料、或奈米銀與奈米氧化矽之複合材料；或(3)以上任一種複合材料(2)再與氧化鋅調配之多重複合材料；或(4)以上任一種複合材料(2)再與氧化鋅和鋁調配之多重複合材料。According to the present invention, the nano heat dissipating material comprises a dispersing agent and a solid content, and the dispersing agent may be an emu oil, a polymer coating or a plastic, and the solid content comprises a main agent, a metal powder, an additive, wherein the main agent is selected from the group consisting of aluminum nitride, or Boron nitride, or tantalum carbide, the metal powder is aluminum powder or copper powder, and the additive is a composite material of one or more of the following: (1) nano silver or nano zinc oxide; or (2) Graphene or Single-Wall Carbon Nano-Tube (SWCNT) or Multi-Wall Carbon Nano-Tube (MWCNT) and nano-oxidation Composite of zinc, or a composite of nano-decane and nano-zinc oxide, or a composite of graphite and nano-zinc oxide, or a composite of graphite plus nano-zinc oxide plus nano-cerium oxide, or nanoclay a composite material with nano zinc oxide, or a composite of nano clay, nano zinc oxide, and nanometer cerium oxide, or a composite material of nano silver and nano zinc oxide, or a composite material of nano silver and nano clay, Or a composite material of nano silver and nano cerium oxide; or (3) a composite material of any of the above composite materials (2) and zinc oxide; or (4) any of the above composite materials (2) and oxidation Multiple composites formulated with zinc and aluminum.
以上固含量中之主劑、添加劑、金屬粉末之較佳比例範圍如下(容許10%的誤差)：主劑/(主劑＋添加劑＋金屬粉末)=(15~35/100)The preferred ratio of the main agent, additive, and metal powder in the above solid content is as follows (allows 10% error): main agent / (main agent + additive + metal powder) = (15 ~ 35 / 100)
添加劑/(主劑＋添加劑＋金屬粉末)=(5~12.5/100)Additive / (main agent + additive + metal powder) = (5 ~ 12.5 / 100)
金屬粉末/(主劑＋添加劑＋金屬粉末)=(57.5~75/100)Metal powder / (main agent + additive + metal powder) = (57.5 ~ 75 / 100)
如添加劑使用複合材料再與氧化鋅調配之多重複合材料，則其較佳之比例範圍為(容許10%的誤差)：含石墨複合材料/ZnO=9:1至1:1If the additive uses a composite material and then multi-composite compounded with zinc oxide, the preferred ratio range is (allows 10% error): graphite-containing composite / ZnO = 9:1 to 1:1
含MWCNT複合材料/ZnO=1:1至1:4，以1:4尤佳MWCNT composites/ZnO=1:1 to 1:4, especially 1:4
含矽烷複合材料/ZnO=1:1至1:4，以1:4尤佳矽-containing composite material / ZnO = 1:1 to 1:4, especially 1:4
為便於了解起見，以下根據實施例來說明本發明的內 容，但應了解的是，實施例僅係說明本發明的較佳實施形態，而非用以限制本發明的範圍。For the sake of convenience, the following description of the present invention will be made based on the embodiments. It is to be understood that the embodiments are merely illustrative of the preferred embodiments of the invention and are not intended to limit the scope of the invention.
根據本發明，散熱材料中包含兩個主要成分：分散劑和固含量。若製作膏體時，分散劑例如可為矽油；若欲製作塗料時，分散劑可為高分子塗料如環氧樹脂、PU樹脂、或耐高溫的工程樹脂等；若欲製作塑料時，分散劑可為高分子塑料如PC、ABS、或耐高溫的工程塑料等。而固含量中又包含三個主要成分：主劑、金屬粉末、添加劑。本發明的重點在於固含量中之成分材料與其間之比例，至於分散劑和固含量的比例則非本發明的重點，熟悉本技術者當可在了解本發明所揭示內容後，依應用上的需要而自行調配。舉一例而言，製作膏體時，矽油和固含量的比例可為20%:80%至50%:50%，但本發明並不侷限於上述範圍。According to the invention, the heat dissipating material contains two main components: a dispersant and a solid content. When the paste is prepared, the dispersing agent may be, for example, eucalyptus oil; if the coating is to be prepared, the dispersing agent may be a polymer coating such as an epoxy resin, a PU resin, or a high temperature resistant engineering resin; if a plastic is to be used, the dispersing agent It can be a polymer plastic such as PC, ABS, or high temperature resistant engineering plastics. The solid content also contains three main components: the main agent, metal powder, and additives. The focus of the present invention is on the ratio of the constituent materials in the solid content to the ratio between the dispersant and the solid content. The proportion of the dispersant and the solid content is not the focus of the present invention, and those skilled in the art can understand the disclosure of the present invention, depending on the application. Need to deploy it yourself. For example, when the paste is prepared, the ratio of the eucalyptus oil to the solid content may be 20%: 80% to 50%: 50%, but the present invention is not limited to the above range.
根據本發明，固含量中之主劑可為氮化鋁、氮化硼、碳化矽等。According to the present invention, the main component in the solid content may be aluminum nitride, boron nitride, tantalum carbide or the like.
固含量中之金屬粉末可為鋁粉、銅粉等。The metal powder in the solid content may be aluminum powder, copper powder or the like.
根據本發明，固含量中之添加劑可為：(1)單一奈米材料，如奈米銀、奈米氧化鋅；或(2)包含奈米材料之複合材料，如奈米碳片(graphene)或單壁奈米碳管(SWCNT)或多壁奈米碳管(MWCNT)和奈米氧化鋅之複合材料、奈米矽烷和奈米氧化鋅之複合材料、 石墨和奈米氧化鋅之複合材料、石墨加奈米氧化鋅加奈米氧化矽之複合材料、奈米黏土(Nanoclay)和奈米氧化鋅之複合材料、奈米黏土加奈米氧化鋅加奈米氧化矽之複合材料、奈米銀與奈米氧化鋅之複合材料、奈米銀與奈米黏土之複合材料、奈米銀與奈米氧化矽之複合材料；或(3)以上任一種複合材料(2)再與氧化鋅調配之多重複合材料；或(4)以上任一種複合材料(2)再與氧化鋅和鋁調配之多重複合材料。在(3)(4)中，複合調配時之氧化鋅和鋁可以不為奈米材料，但當然亦可為奈米材料。According to the present invention, the additive in the solid content may be: (1) a single nano material such as nano silver or nano zinc oxide; or (2) a composite material comprising a nano material such as graphite (graphene) Or a composite of single-walled carbon nanotubes (SWCNTs) or multi-walled carbon nanotubes (MWCNTs) and nano zinc oxide, a composite of nano-decane and nano-zinc oxide, Composite of graphite and nano zinc oxide, composite of graphite plus nano zinc oxide and nanometer cerium oxide, composite of nanoclay and nano zinc oxide, nano clay, nanometer zinc oxide, nanometer cerium oxide Composite material, composite of nano silver and nano zinc oxide, composite of nano silver and nano clay, composite of nano silver and nano cerium oxide; or (3) any composite material (2) Multiple composite materials formulated with zinc oxide; or (4) multiple composite materials of any of the above composite materials (2) and zinc oxide and aluminum. In (3) (4), the zinc oxide and aluminum in the compounding may not be a nano material, but may of course be a nano material.
以上所有材料均可獲致勝於先前技術Y-500的效果，但經本案發明人研究，使用MWCNT和奈米氧化鋅之複合材料，或使用MWCNT和奈米氧化鋅之複合材料再與氧化鋅調配之多重複合材料，其效果尤佳。All of the above materials can achieve better results than the prior art Y-500, but the study by the inventor of the present invention uses a composite of MWCNT and nano zinc oxide, or a composite of MWCNT and nano zinc oxide and then blended with zinc oxide. The multiple composite materials have a particularly good effect.
以上固含量中之主劑、添加劑、金屬粉末之較佳比例範圍如下(容許10%的誤差)：主劑/(主劑＋添加劑＋金屬粉末)=(15~35/100)The preferred ratio of the main agent, additive, and metal powder in the above solid content is as follows (allows 10% error): main agent / (main agent + additive + metal powder) = (15 ~ 35 / 100)
添加劑/(主劑＋添加劑＋金屬粉末)=(5~12.5/100)Additive / (main agent + additive + metal powder) = (5 ~ 12.5 / 100)
金屬粉末/(主劑＋添加劑＋金屬粉末)=(57.5~75/100)Metal powder / (main agent + additive + metal powder) = (57.5 ~ 75 / 100)
如添加劑使用複合材料再與氧化鋅調配之多重複合材料，則其較佳之比例範圍為(容許10%的誤差)：含石墨複合材料/ZnO=9:1至1:1If the additive uses a composite material and then multi-composite compounded with zinc oxide, the preferred ratio range is (allows 10% error): graphite-containing composite / ZnO = 9:1 to 1:1
含MWCNT複合材料/ZnO=1:1至1:4，以1:4尤佳MWCNT composites/ZnO=1:1 to 1:4, especially 1:4
含矽烷複合材料/ZnO=1:1至1:4，以1:4尤佳 其中，MWCNT和奈米氧化鋅之複合材料例如可使用頂尖奈米科技公司所生產之型號為SP-CZ0101的產品，該產品中MWCNT與奈米氧化鋅之比例為1.2/100，但本發明並不侷限於此一範圍。矽-containing composite material / ZnO = 1:1 to 1:4, especially 1:4 Among them, the composite material of MWCNT and nano zinc oxide can be, for example, a product of SP-CZ0101 produced by the top nanotechnology company, in which the ratio of MWCNT to nano zinc oxide is 1.2/100, but the present invention Not limited to this range.
以下再略舉數個實例來說明本發明的效果。各實例中，係將本發明製作成膏體後，將先前技術Y-500和本發明分別塗在加溫下治具上，蓋上上治具後，測量上治具之溫度。上治具之溫度愈高，表示熱傳導率愈佳，亦即散熱效果愈佳。Several examples will be exemplified below to illustrate the effects of the present invention. In each of the examples, after the present invention was made into a paste, the prior art Y-500 and the present invention were respectively applied to a heating fixture, and after the upper fixture was covered, the temperature of the upper fixture was measured. The higher the temperature of the upper fixture, the better the thermal conductivity, that is, the better the heat dissipation effect.
為製作膏體與先前技術Y-500做對照比較，因此分散劑採用矽油，以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：金屬粉末如表1之比例，製作成膏體，依前述方式實驗並與先前技術Y-500比對，其結果如圖1。For the comparison of the preparation of the paste with the prior art Y-500, the dispersant is made of eucalyptus oil, the ratio of eucalyptus oil and solid content is 25%: 75%, and the solid content is the ratio of the main agent: additive: metal powder as shown in Table 1. The paste was prepared and tested in the foregoing manner and compared with the prior art Y-500. The results are shown in Fig. 1.
如圖1所示，編號為69, 74, 78的三種配方均有優於Y-500之散熱表現，其中69, 74兩種配方的表現尤佳。As shown in Figure 1, the three formulations numbered 69, 74, and 78 all have better heat dissipation performance than the Y-500, with 69 and 74 formulations performing particularly well.
本實例分為兩部份，首先以矽油和固含量為25%:75%之比例，且固含量中單純僅含主劑氮化鋁進行實驗，但實驗中選用同廠牌不同型號之氮化鋁，得出圖2A，獲知型號B之氮化鋁具有較佳之散熱效果。其次以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：金屬粉末如表2之比例，製作成膏體，依前述方式實驗並與先前技術Y-500比對，其結果如圖2B。This example is divided into two parts. Firstly, the ratio of eucalyptus oil and solid content is 25%:75%, and the solid content is purely only containing the main agent aluminum nitride. However, the experiment uses different models of nitriding from the same brand. Aluminum, which is shown in Fig. 2A, is known to have a better heat dissipation effect of aluminum nitride of model B. Secondly, the ratio of eucalyptus oil and solid content is 25%:75%, and the main component in the solid content: additive: metal powder is prepared into a paste according to the ratio of Table 2, and is tested in the foregoing manner and compared with the prior art Y-500. The result is shown in Fig. 2B.
本實驗中，編號67和77之添加劑成份相同，但主劑採用型號B之氮化鋁和型號AB混合之氮化鋁。如圖2B所示，雖然型號B之氮化鋁具有較佳之散熱效果，但編號67之配方僅具有與Y-500相匹配的效果，而編號77之配方反具有優於Y-500之散熱表現。本實驗證明石墨加奈米氧化鋅加奈米氧化矽之複合材料為可選用之添加劑材料。In this experiment, the additives of Nos. 67 and 77 were the same, but the main agent was aluminum nitride of Model B and Type AB. As shown in FIG. 2B, although the aluminum nitride of the model B has a better heat dissipation effect, the formula of the number 67 has only the effect matched with the Y-500, and the formula of the number 77 has the heat dissipation performance superior to that of the Y-500. . This experiment proves that graphite plus nano zinc oxide plus nano cerium oxide composite is an optional additive material.
以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：金屬粉末如表3之比例，製作成膏體，依前述方式實驗並與先前技術Y-500比對，其結果如圖3。The ratio of eucalyptus oil and solid content is 25%:75%, and the main component in the solid content: additive: metal powder is prepared into a paste according to the ratio of Table 3, and is tested in the foregoing manner and compared with the prior art Y-500. The result is shown in Figure 3.
如圖3所示，編號為49, 61, 63的三種配方均有優於Y-500之散熱表現，其中編號63的配方表現尤佳。請注意編號61之材料中含石墨複合材料/ZnO助劑之比例為9:1，編號61之材料中含石墨複合材料/ZnO助劑之比例則為1:1。本實驗顯示含石墨複合材料/ZnO之比例可為9:1至1:1。本實驗同時顯示以奈米氧化鋅為單一添加劑亦屬可行。As shown in Figure 3, the three formulations numbered 49, 61, and 63 all have better heat dissipation performance than the Y-500, with the formulation number 63 being particularly good. Please note that the ratio of the graphite composite/ZnO additive in the material of No. 61 is 9:1, and the ratio of the graphite composite/ZnO additive in the material of No. 61 is 1:1. This experiment shows that the ratio of graphite-containing composite/ZnO can be from 9:1 to 1:1. This experiment also shows that it is feasible to use nano zinc oxide as a single additive.
以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：金屬粉末如表4之比例，製作成膏體，依前述方式實驗互相比對，其結果如圖4。The ratio of eucalyptus oil and solid content was 25%: 75%, and the main component in the solid content: additive: metal powder was prepared into a paste according to the ratio of Table 4, and the experiments were compared with each other in the above manner, and the results are shown in Fig. 4.
如圖4所示，本實驗發現其他配方均有相似的效果，但編號為62的配方表現明顯偏離，因此判定金屬粉末之較佳比例宜不低於57.5%。As shown in Fig. 4, this experiment found that other formulations have similar effects, but the formulation with the number 62 shows a significant deviation, so it is determined that the preferred ratio of the metal powder is not less than 57.5%.
以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：金屬粉末如表5之比例，製作成膏體，依前述方式實驗互相比對，其結果如圖5。The ratio of eucalyptus oil and solid content is 25%: 75%, and the main component in the solid content: additive: metal powder is prepared into a paste according to the ratio of Table 5, and the experiments are compared with each other in the above manner, and the results are shown in Fig. 5.
如圖5所示，本實驗同樣得出結論，金屬粉末之較佳比例宜不低於57.5%，但主劑量可下降。As shown in Fig. 5, this experiment also concludes that the preferred ratio of metal powder is preferably not less than 57.5%, but the main dose can be decreased.
以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：金屬粉末如表6之比例，製作成膏體，依前 述方式實驗並與先前技術Y-500比對，其結果如圖6。The ratio of eucalyptus oil and solid content is 25%:75%, and the main component in the solid content: additive: metal powder is in the proportion of Table 6, and is made into a paste, according to the former The mode experiment was compared with the prior art Y-500, and the results are shown in Fig. 6.
如圖6所示，本實驗發現添加劑固可單純使用含MWCNT之複合材料(MWCNT+ZnO)，但若添加劑使用含MWCNT之複合材料和氧化鋅助劑之多重複合材料時，(MWCNT+ZnO)/ZnO的比例以1:4為最佳。As shown in Fig. 6, this experiment found that the additive can be used simply by using MWCNT-containing composite material (MWCNT+ZnO), but if the additive uses multiple composite materials containing MWCNT composite material and zinc oxide auxiliary agent, (MWCNT+ZnO) The ratio of /ZnO is preferably 1:4.
以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：金屬粉末如表7之比例，製作成膏體，依前述方式實驗並與先前技術Y-500比對，其結果如圖7。The ratio of eucalyptus oil and solid content is 25%:75%, and the main component in the solid content: additive: metal powder is prepared into a paste according to the ratio of Table 7, and is tested in the foregoing manner and compared with the prior art Y-500. The result is shown in Fig. 7.
如圖7所示，本實驗發現添加劑之比例佔固含量中之較佳比例宜不大於12.5%。As shown in Fig. 7, this experiment found that the ratio of the proportion of the additive to the solid content is preferably not more than 12.5%.
以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：金屬粉末如表8之比例，製作成膏體，依前述方式實驗並與先前技術Y-500比對，其結果如圖8。The ratio of eucalyptus oil and solid content is 25%:75%, and the main component in the solid content: additive: metal powder is prepared into a paste according to the ratio of Table 8, and is tested in the foregoing manner and compared with the prior art Y-500. The result is shown in Fig. 8.
如圖8所示，本實驗發現主劑與金屬粉末佔固含量中之比例可在30:60至15:75之間變動，均仍可獲致優於Y-500的散熱效果。As shown in Fig. 8, this experiment found that the ratio of the main agent to the metal powder in the solid content can be varied from 30:60 to 15:75, and the heat dissipation effect superior to Y-500 can still be obtained.
以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：多屬粉末如表9之比例，製作成膏體，依前述方式實驗並與先前技術Y-500比對，其結果如圖9。The ratio of eucalyptus oil and solid content is 25%:75%, and the main component in the solid content: additive: mostly powder, as shown in Table 9, is made into a paste, and is tested in the above manner and compared with the prior art Y-500. The result is shown in Figure 9.
如圖9所示，本實驗發現含矽烷之複合材料(矽烷＋ZnO)同樣可獲致優於Y-500的散熱效果，但氮化鋁之比例不宜過低，否則效果較差。As shown in Figure 9, this experiment found that the composite material containing decane (decane + ZnO) can also achieve better heat dissipation than Y-500, but the proportion of aluminum nitride should not be too low, otherwise the effect is poor.
以矽油和固含量為40%:60%之比例，且固含量暫不添加金屬粉末，以如表10之比例，製作成膏體，依前述方式實驗互相比對，其結果如圖10。The ratio of eucalyptus oil and solid content was 40%: 60%, and the solid content was not added with metal powder at present. The paste was prepared in the proportions shown in Table 10, and the experiments were compared with each other in the above manner. The results are shown in Fig. 10.
圖10結果對照實例三，可推知以純奈米銀、奈米銀與奈米氧化鋅之複合材料、奈米銀與奈米黏土之複合材料或奈米銀和奈米氧化矽之複合材料取代氧化鋅作為添加劑，可得相似或更佳之效果。Figure 10 Results Comparative Example 3, it can be inferred that the composite material of pure nano silver, nano silver and nano zinc oxide, nano silver and nano clay composite or nano silver and nano cerium oxide composite oxidation Zinc as an additive gives a similar or better effect.
以矽油和固含量為30%:70%之比例，且固含量暫不添加金屬粉末，以如表11之比例，製作成膏體，依前述方式實驗互相比對，其結果如圖11。The ratio of eucalyptus oil and solid content was 30%:70%, and the solid content was not added with metal powder at present, and the paste was prepared in the proportions shown in Table 11 and compared with each other in the above manner. The results are shown in Fig. 11.
圖11結果顯示以上配方之效果極為相似，對照實例三與實例10，可推知以純奈米銀、奈米銀與奈米氧化鋅之複合材料、奈米銀與奈米黏土之複合材料或奈米銀和奈米氧化矽之複合材料取代氧化鋅作為添加劑，可得相似或更佳之效果。The results in Figure 11 show that the effects of the above formulas are very similar. In Comparative Example 3 and Example 10, it can be inferred that the composite material of pure nano silver, nano silver and nano zinc oxide, nano silver and nano clay composite or nano A composite of silver and nano-cerium oxide replaces zinc oxide as an additive to obtain a similar or better effect.
以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：金屬粉末如表12之比例，製作成膏體，依前述方式實驗並與先前技術Y-500比對，其結果如圖12。The ratio of eucalyptus oil and solid content is 25%:75%, and the main component in the solid content: additive: metal powder is prepared into a paste according to the ratio of Table 12, and is tested in the foregoing manner and compared with the prior art Y-500. The result is shown in Fig. 12.
如圖12所示，本實驗發現含矽烷之複合材料(矽烷＋ZnO)同樣可獲致優於Y-500的散熱效果，但氮化鋁之比例宜等於或高於15%，否則效果較差。As shown in Figure 12, this experiment found that the composite material containing decane (decane + ZnO) can also achieve better heat dissipation than Y-500, but the ratio of aluminum nitride should be equal to or higher than 15%, otherwise the effect is poor.
以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：金屬粉末如表13之比例，製作成膏體，依前述方式實驗並與先前技術Y-500比對，其結果如圖13。The ratio of eucalyptus oil and solid content is 25%:75%, and the main component in the solid content: additive: metal powder is prepared into a paste according to the ratio of Table 13, and is tested in the foregoing manner and compared with the prior art Y-500. The result is shown in Fig. 13.
如圖13所示，本實驗發現奈米添加劑為矽烷＋ZnO時，金屬粉末之配比可下降，仍同樣可獲致優於Y-500的散熱效果，且其散熱效果與金屬粉末所佔比例並無一定的 關係。本實驗對照實例八與實例十二，確認主劑與金屬粉末佔固含量中之比例可在30:60至15:75之間變動。As shown in Figure 13, when the nano additive is decane + ZnO, the ratio of metal powder can be reduced, and the heat dissipation effect better than Y-500 can be obtained, and the heat dissipation effect and the proportion of metal powder are not Certain relationship. In this experiment, in Comparative Example 8 and Example 12, it was confirmed that the ratio of the main agent to the metal powder in the solid content may vary from 30:60 to 15:75.
以矽油和固含量為25%:75%之比例，且固含量中主劑：添加劑：金屬粉末如表14之比例，製作成膏體，依前述方式實驗並與先前技術Y-500比對，其結果如圖14。The ratio of eucalyptus oil and solid content is 25%:75%, and the main component in the solid content: additive: metal powder is prepared into a paste according to the ratio of Table 14, and is tested in the foregoing manner and compared with the prior art Y-500. The result is shown in Fig. 14.
如圖14所示，本實驗發現使用MWCNT和奈米氧化鋅之複合材料作為奈米添加劑時，可以提高奈米添加劑的比例，仍可獲致匹配或優於Y-500的散熱效果。As shown in Fig. 14, this experiment found that when the composite material of MWCNT and nano zinc oxide is used as a nano additive, the ratio of the nano additive can be improved, and the heat dissipation effect of matching or superior to Y-500 can still be obtained.
以上實施例已針對本發明之主要重點作說明。發明人曾對以下共126種配方進行試驗，為簡化說明書起見，以上僅挑選較具代表性的實例作說明，其他則不詳細一一列舉。The above embodiments have been described with respect to the main points of the present invention. The inventors have tested the following 126 kinds of formulations. For the sake of simplifying the description, only the more representative examples are selected above, and others are not listed in detail.
以上說明之目的在闡述本發明的主要特點與效益，並顯示本發明已達可實施之階段，但並非用以限定本發明之專利範圍，熟習本技術者當可在本發明教導下加以類推，故凡未脫離本發明精神之等效變化或修改，均仍應包含本發明之權利範圍中。The above description is intended to illustrate the main features and advantages of the present invention, and it is shown that the present invention has been implemented, but is not intended to limit the scope of the invention, and those skilled in the art can be analogized by the teachings of the present invention. All changes and modifications that do not depart from the spirit of the invention are intended to be included within the scope of the invention.
圖1-14顯示本發明各實施例的散熱效果。Figures 1-14 illustrate the heat dissipation effects of various embodiments of the present invention.
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| US7196413B2 (en) * | 2004-03-03 | 2007-03-27 | Nissan Motor Co., Ltd. | Heat dissipation assembly and method for producing the same |
| US20080047809A1 (en) * | 2004-06-01 | 2008-02-28 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewan | Micromechanical Hf Switching Element and Method for the Production Thereof |
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| US7109581B2 (en) * | 2003-08-25 | 2006-09-19 | Nanoconduction, Inc. | System and method using self-assembled nano structures in the design and fabrication of an integrated circuit micro-cooler |
| US7196413B2 (en) * | 2004-03-03 | 2007-03-27 | Nissan Motor Co., Ltd. | Heat dissipation assembly and method for producing the same |
| US20080047809A1 (en) * | 2004-06-01 | 2008-02-28 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewan | Micromechanical Hf Switching Element and Method for the Production Thereof |
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