本文關(guān)鍵詞：基于近場電紡直寫的微納3D打印平臺(tái)搭建及其圖案精確沉積性能研究　出處：《深圳大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 3D打印 微納米器件 電紡直寫 圖案化精確沉積

【摘要】：微納3D打印發(fā)展至今,在技術(shù)上已經(jīng)取得了不少的突破和進(jìn)展,尤其是柔性電子、微傳感器、微流控芯片等微納米器件具有巨大的發(fā)展?jié)摿�。微納3D打印是快速成型制造的發(fā)展前沿。本課題提出了一種基于近場電紡直寫的微納3D打印新工藝,并自行搭建了近場直寫的靜電紡絲平臺(tái)。近場靜電紡絲技術(shù)通過減小紡絲距離從而降低紡絲電壓,不僅可以減少能耗,也有效地解決了傳統(tǒng)遠(yuǎn)場靜電紡絲過程的高電壓不安全性、沉積成形效果不穩(wěn)定等問題。但是距離短、電壓低也會(huì)帶來沉積圖案的精度低、成形效果不好等一系列問題。本文針對(duì)近場靜電紡絲技術(shù)現(xiàn)存的問題,主要的研究工作和結(jié)論可以歸納一下幾點(diǎn):(1)高精度的設(shè)備是進(jìn)行近場靜電紡絲技術(shù)研究的基礎(chǔ),根據(jù)課題的需要,自主搭建了一套靜電紡絲設(shè)備,設(shè)計(jì)開發(fā)各個(gè)子系統(tǒng),包括三軸運(yùn)動(dòng)系統(tǒng)、成形環(huán)境系統(tǒng)、材料輸送系統(tǒng)和數(shù)控系統(tǒng),搭建了完整的電紡平臺(tái)。(2)理論分析了電場在靜電紡絲中的作用,利用Ansoft maxwell軟件進(jìn)行了單個(gè)噴頭模式的電場仿真。這樣可以直觀且快捷地模擬出理想情況下的電場分布情況,得到的結(jié)果是:垂直向下的噴頭左右兩側(cè)分布的電場電勢和電場強(qiáng)度是均勻的,電場方向是朝著收集板所在位置發(fā)射,噴頭表面電勢最大,噴頭最大電場強(qiáng)度位置位于噴頭口處,方向垂直收集板向下。(3)針對(duì)基板速度、工作電壓、工作距離、運(yùn)動(dòng)突變等因素對(duì)近場電紡纖維絲的成形的影響�？偨Y(jié)出了比較好的近場電紡絲直寫工藝:濃度在10%的PVA溶液,工作電壓在2kV,基板速度150mm/s,噴頭到基板間距2mm�；趩螌永w維絲圖案的沉積規(guī)律來實(shí)現(xiàn)多層纖維絲沉積圖案化,還對(duì)多層圖案化精確沉積的實(shí)現(xiàn)進(jìn)行探討。通過初步研究,加深了對(duì)近場直寫靜電紡絲的認(rèn)識(shí),初步掌握了電紡直寫的工藝參數(shù),為后續(xù)通過電紡工藝來完成3D打印微納米器件等研究提供了實(shí)驗(yàn)基礎(chǔ)。
[Abstract]:Micro nano 3D printing development has a lot of breakthroughs and progress has been made in technology, especially the flexible electronics, micro sensors, micro nano devices such as microfluidic chip has great potential for development. The micro nano 3D printing is the forefront of the development of rapid prototyping and manufacturing. This paper proposes a near-field electrospinning based on straight write the new micro nano technology of 3D printing, and built up the near-field electrospinning direct writing platform. Near field electrospinning technique by reducing the spinning distance so as to reduce the spinning voltage, can not only reduce energy consumption, but also effectively solve the traditional far field electrospinning process of high voltage safety problems, such as the effect of instability deposition. But a short distance, low voltage will also bring the deposition pattern of low precision, a series of problems forming effect is not good. Aiming at the existing problems of electrospinning technique in near field, the main research work and conclusions can be To sum up the following points: (1) high precision equipment is based near field electrospinning technology research, according to the requirements of the project, we build a set of electrostatic spinning equipment, the development of each subsystem design, including three axis motion system, forming system, material conveying system and control system, set up the electric spinning platform complete. (2) the theoretical analysis of the effect of electric field in electrostatic spinning, the electric field simulation of a single nozzle model using Ansoft Maxwell software. This intuitive and fast simulation of electric field distribution under ideal conditions, the result is: the vertical distribution of electric potential on both sides of the nozzle and the electric field intensity is uniform, the electric field direction is toward the collecting plate location of emission, the surface potential maximum nozzle, nozzle the maximum electric field strength is located at the mouth of the nozzle, perpendicular to the direction of the collector plate (3) for downward. The substrate speed, working voltage, working distance, motion and other factors on the forming effect of mutation of electrospun fiber filament near field. Summed up the near field electrospinning good direct writing process: concentration in 10% PVA solution, the working voltage is 2kV, the speed of 150mm/s nozzle to substrate, substrate distance 2mm. deposition of single fiber the silk pattern based on multi-layer fiber deposition of patterned multilayer patterned, also deposited precisely are discussed. Through preliminary research, deepen the understanding of the electrospinning direct writing near field, initially mastered the technology parameters of electrical spinning direct writing, through the electrospinning process for the follow-up to complete 3D printing to provide experimental basis for the study of micro and nano devices.

【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
【分類號(hào)】：TP391.73

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本文編號(hào)：1370107