發(fā)布時(shí)間：2018-05-18 21:17

  本文選題：柔性導(dǎo)體 + 材料柔性�。� 參考：《深圳大學(xué)》2017年碩士論文

【摘要】：柔性導(dǎo)體,一種在機(jī)械形變情況下依然可以保持導(dǎo)電的電極材料,目前在可穿戴設(shè)備、能源器件、電子皮膚、健康監(jiān)測(cè)設(shè)備等領(lǐng)域具有非常廣闊的應(yīng)用前景。本論文根據(jù)“材料柔性”和“結(jié)構(gòu)柔性”兩種策略,分別在材料與結(jié)構(gòu)方面引入柔性,從而制備出具有高機(jī)械穩(wěn)定性、高導(dǎo)電能力的柔性導(dǎo)體。材料柔性,是利用材料自身的柔性,使得制備出的柔性導(dǎo)體具有優(yōu)異的機(jī)械靈活性。結(jié)構(gòu)柔性,就將拉伸性能低的材料制備成具有可拉伸結(jié)構(gòu),從而實(shí)現(xiàn)柔性導(dǎo)體。為了驗(yàn)證以上兩種策略和開(kāi)發(fā)出具有高機(jī)械穩(wěn)定性和高導(dǎo)電能力的柔性導(dǎo)體,在本畢業(yè)論文中,我們研發(fā)了聚合物輔助的微流原位無(wú)電沉積制備金屬圖案化技術(shù)、三維柔性導(dǎo)電金屬硅橡膠海綿和液態(tài)金屬導(dǎo)電海綿,并將所制備的柔性導(dǎo)體成功運(yùn)用于柔性電路的構(gòu)筑與應(yīng)用。具體內(nèi)容主要包括以下三個(gè)方面:第一,我們研發(fā)了基于聚合物輔助的微流原位無(wú)電沉積方法,在柔性基底(苯二甲酸乙酯(PET)薄膜)上制備多種金屬圖案,并將其成功應(yīng)用于制備具有高導(dǎo)電性的柔性電路的研究。在實(shí)驗(yàn)中,我們?cè)赑ET基底上分別制備出Cu-PET,Ag-PET和Ni-PET金屬圖案,且得到的金屬圖案具有極高導(dǎo)電性和優(yōu)異的機(jī)械靈活性。其中,Cu-PET,Ag-PET和Ni-PET金屬圖案的電導(dǎo)率分別為3.0×107 S/m、5.2×107 S/m和1.0×107 S/m。所制制備的金屬圖案具有極高的可彎曲柔性。實(shí)驗(yàn)結(jié)果表明,金屬圖案在不同的彎曲曲率半徑下彎曲循環(huán)5000次,仍然表現(xiàn)出穩(wěn)定的導(dǎo)電性�；诮饘賵D案的LED電路實(shí)驗(yàn)和時(shí)間穩(wěn)定性測(cè)試,進(jìn)一步證明了在PET基底上制備的金屬結(jié)構(gòu)具有較高的耐氧化性和實(shí)用性。該方法同時(shí)還具有成本低、設(shè)備簡(jiǎn)單、污染小、制備條件溫和等特點(diǎn),具有可工業(yè)化生產(chǎn)的前景。第二,基于聚合物輔助無(wú)電沉積法和“結(jié)構(gòu)柔性”的策略,我們?cè)谌S彈性結(jié)構(gòu)(如硅橡膠海綿)基底上制備了金屬涂層,得到了三維可拉伸、可壓縮、可彎曲的金屬柔性導(dǎo)體。實(shí)驗(yàn)首先在硅橡膠(PDMS)海綿表面通過(guò)聚合物改性,離子交換、金屬無(wú)電沉積等步驟,制備出多種金屬PDMS海綿。在本論文研究中,我們成功地制備了Cu-,Ag/Cu-和Au/Cu-PDMS導(dǎo)電海綿。通過(guò)檢測(cè)其在拉伸、壓縮和彎曲狀態(tài)下的電阻變化,我們發(fā)現(xiàn)了該三維導(dǎo)電海綿具有極高的機(jī)械靈活性和穩(wěn)定性。金屬PDMS海綿導(dǎo)體在重復(fù)循環(huán)拉伸和壓縮(高達(dá)5000次)形變下,電阻幾乎保持恒定。為了進(jìn)一步證明其實(shí)際使用能力,實(shí)驗(yàn)通過(guò)構(gòu)筑以三維金屬導(dǎo)電海綿為導(dǎo)體的發(fā)光二極管(LED)電路,成功驗(yàn)證了其導(dǎo)電性、穩(wěn)定性及機(jī)械靈活性。第三,為了構(gòu)筑一種全軟的三維導(dǎo)體,我們研發(fā)了一種基于液態(tài)金屬的彈性海綿。液態(tài)金屬(GaIn Sn)在室溫條件下是液態(tài),可流動(dòng)且無(wú)固定形狀。本研究中將液態(tài)金屬注入到硅橡膠海綿內(nèi),形成三維互通的液態(tài)金屬海綿。該方法可被認(rèn)為是基于“材料與結(jié)構(gòu)皆柔性”的策略。3D多孔互連彈性PDMS海綿作為儲(chǔ)存和支持液態(tài)GaInSn金屬的3D骨架,整個(gè)導(dǎo)體表現(xiàn)出高的機(jī)械靈活性,當(dāng)導(dǎo)體變成不同形狀,其仍能夠保持極高的導(dǎo)電性。實(shí)驗(yàn)通過(guò)加載量不同的液態(tài)金屬到不同形狀的PDMS海綿上,制備得到具有可控電導(dǎo)率的導(dǎo)體,最高可達(dá)1.62 x104 S/cm,接近GaInSn的導(dǎo)電率。實(shí)驗(yàn)還進(jìn)一步研究液態(tài)金屬-PDMS海綿的拉伸性和抗疲勞性。實(shí)驗(yàn)結(jié)果表明,該導(dǎo)體的電阻在50%拉伸應(yīng)變下和10000次拉伸循環(huán)下幾乎恒定不變。實(shí)驗(yàn)最后,成功地實(shí)現(xiàn)了由GaInSn-PDMS海綿導(dǎo)體與發(fā)光二極管燈組裝成的電路應(yīng)用。
[Abstract]:Flexible conductor, a kind of electrode material that still can maintain electrical conductivity in the condition of mechanical deformation, has a very broad application prospect in the fields of wearable equipment, energy devices, electronic skin, health monitoring equipment and so on. In this paper, the material and structure are introduced according to the two strategies of "material flexibility" and "structural flexibility". Flexible conducting flexible conductors with high mechanical stability and high conductivity. Material flexibility is to make use of the flexibility of the material itself to make the flexible conductor with excellent mechanical flexibility. In the last two strategies and the development of flexible conductors with high mechanical stability and high conductivity, we developed a polymer assisted microflow in situ electroless deposition for the preparation of metal patterned technology, a three-dimensional flexible conducting metal silicon rubber sponge and a liquid metal conductive sponge, and the successful operation of the prepared flexible conductors. The construction and application of flexible circuits mainly include the following three aspects: first, we developed a polymer assisted microfluidic in situ electroless deposition method to prepare a variety of metal patterns on a flexible base (PET) film and successfully apply it to the preparation of a flexible circuit with high conductivity. In the experiment, we have prepared Cu-PET, Ag-PET, and Ni-PET metal patterns on the PET substrate, and the metal patterns obtained have high conductivity and excellent mechanical flexibility. Among them, the conductivity of the Cu-PET, Ag-PET and Ni-PET metal patterns is 3 * 107 S/m, 5.2 * 107 S/m and 1 x 107 S/m. respectively. The experimental results show that the metal patterns bend 5000 times under different curvature radius and still exhibit stable conductivity. The metal pattern based LED circuit experiment and time stability test further prove that the metal structure prepared on the PET substrate has high oxidation resistance and practicability. The method also has the characteristics of low cost, simple equipment, small pollution and mild preparation conditions. Second, based on the strategy of polymer assisted electroless deposition and "structural flexibility", we have prepared a metal coating on the three dimensional elastic structure (such as silicone rubber sponge) and obtained a three-dimensional stretch. Compressible, flexiable metal flexible conductors. Experiments were made to prepare a variety of metal PDMS sponges on the surface of silicone rubber (PDMS) sponge through polymer modification, ion exchange, metal electroless deposition and other steps. In this paper, we successfully prepared Cu-, Ag/Cu- and Au/Cu-PDMS conductive sponges. By detecting it in tension, compression and bending The resistance changes in the curved state show that the three-dimensional conductive sponge has high mechanical flexibility and stability. The resistance of the metal PDMS sponge is almost constant under the repeated cycle stretching and compression (up to 5000 times). In order to further prove its practical use, the experiment is constructed by a three-dimensional metal conductive sponge. The electrical conductivity, stability and mechanical flexibility of the conductor (LED) circuit have been successfully verified. Third, in order to build a fully soft three-dimensional conductor, we developed an elastic sponge based on liquid metal. The liquid metal (GaIn Sn) is liquid, fluidity and no fixed shape at room temperature. In this study, liquid gold is in the study. It is injected into the silicon rubber sponge to form a three-dimensional interworking liquid metal sponge. This method can be considered based on the "flexible material and structure" strategy.3D porous interconnect elastic PDMS sponge as the 3D skeleton for storing and supporting the liquid GaInSn metal, the whole conductor shows high mechanical flexibility, and when the conductor becomes different shape, it is still in different shapes. The experimental results show that the tensile and anti fatigue properties of the liquid metal -PDMS sponge are further studied. The experimental results show that the conductivity and fatigue resistance of the liquid metal -PDMS sponge are further studied by loading different liquid metals into different shapes of PDMS sponges. The conductivity is up to 1.62 x104 S/cm, close to the conductivity of GaInSn. The resistance of the conductor is almost invariable under 50% tensile strain and 10000 tension cycles. At the end of the experiment, the circuit application composed of GaInSn-PDMS sponge conductor and light emitting diode lamp is successfully realized.
【學(xué)位授予單位】：深圳大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TM24

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本文編號(hào)：1907243