English
聯系我們
網站地圖
郵箱
舊版回顧



寧波材料所在高分子復合材料3D打印方面取得進展

文章來源:寧波材料技術與工程研究所   發布時間:2019-05-10  【字號:     】  

  隨著科技的不斷發展進步,3D打印技術作為一種全新的數字化模擬制造技術應運而生并迅速發展。其中,熔融沉積技術具有設備簡單、工藝潔凈、運行成本低且不產生過多加工殘留物等優點,被廣泛應用于快速原型和教育等領域。但現有的熔融沉積材料主要以ABS和PLA等通用塑料為主,需要針對工業產品制造開發適合高強度工程塑料等材料的3D打印成型技術。

  中國科學院寧波材料技術與工程研究所增材制造重點實驗室許高杰團隊針對高性能工程塑料3D打印技術開展了一系列研究工作。選取了具有高堅韌度和抗疲勞特性的半晶態尼龍12和高強度聚醚酰亞胺作為基體,研究了熔體流變特性對熔融長絲燒結特性的影響,對高性能工程塑料的3D打印工藝參數、工業可用性進行了研究。研究發現,半結晶高分子具有較好的流變性能和快速燒結特性,在合適的打印條件下能夠獲得接近注塑件的力學性能。拓展了高溫高強度工程塑料在熔融沉積技術中的應用(Rapid Prototyping Journal, 2017, 23(6), 973–982. High Performance Polymers, 2019, 31(1): 97-106)。

  由于熔融沉積層層疊加成型過程產生的空隙會不可避免地降低3D打印產品的機械強度,嚴重制約了熔融沉積技術的應用推廣。研究人員在工藝研究的基礎上,開發了尼龍12/氧化石墨烯、尼龍12/碳纖維復合材料。研究發現兩種填料在熔融沉積成型過程中可實現取向分布,不僅有效提高了產品的機械強度(GNPs 7%和CFs 251.1%),還能夠對產品熱導率(提高51.4%)進行靈活調控(Journal of Applied Polymer Science, 2017, 134(39), 45332.; Materials & Design, 2018, 139: 283-292)。

  最近,研究人員以聚乳酸(PLA)為基體,以熱塑性聚氨酯(TPU)為填料,通過熔融沉積技術的整個加工流程實現了彈性體TPU原位成纖,纖維狀TPU的平均長度可以實現從67.24μm到103.72μm的精準調控。同時,TPU成纖有效改善了其與PLA基體的界面結合力。研究發現,3D打印形成的網格狀TPU可有效補償打印空隙對打印件力學強度的弱化效應,使產品的韌性達到甚至超過注塑水平。該熔融沉積原位纖維技術為制備高韌性聚乳酸復雜結構零件提供了簡便有效的方法(Macromolecular Materials and Engineering, 2019, 1900107)。

  以上工作得到國家自然科學基金(11574331, 11674335)和寧波市科技局(2016B10005, 2018A610009)的資助。

 

圖1 共混物熔融沉積成型流程圖

 

圖2 注塑(a)和打印(b)成型件中TPU的分布形貌

 

圖3 TPU含量和分布結構對制件沖擊強度的影響




(責任編輯:葉瑞優)

附件:

專題推薦

相關新聞


© 1996 - 中國科學院 版權所有 京ICP備05002857號  京公網安備110402500047號  聯系我們

地址:北京市三里河路52號 郵編:100864

汇丰彩票www.hf6880.com www.917817.com | www.978358.com | www.830286.com | 964006.com | www.998540.com | www.003653.com | www.758161.com | www.2033.org | www.03335.cc | www.560553.com | www.118838.com | 395903.com | www.802623.com | www.qj47.com | www.05277.com | www.087609.com | www.41016.com | www.cp911.com | www.019745.com | www.739104.com | www.661723.com | www.311141.com | www.io12.com | www.897691.com | 3717.pw | www.949163.com | www.511040.com | 354896.com | www.597759.com | www.676776.com | www.92555.com | www.837705.com | www.83ex.com | www.321056.com | www.a68.cn | www.787494.com | 017838.com | 657254.com | www.kh79.com | www.751015.com | www.9939.tv | www.945441.com | www.00322.com | 872120.com | www.23671.cc | www.939155.com | www.033542.com | www.072293.com | www.03bh.com | www.590830.com | www.88362.cc | www.987620.com | www.45899.com | www.894451.com | www.982709.com | www.912783.com | www.585085.com | www.298593.com | www.219319.com | www.496905.com | www.683812.com | 874334.com | www.9947.xyz | www.133415.com | www.468545.com | www.589066.com | www.87386.com | www.545679.com | www.878504.com | www.73367.cc | www.081719.com | www.868599.com | www.925795.com | www.587702.com | 475302.com | www.30.vip | www.116396.com | www.589826.com | 719591.com | www.03db.com | www.35715.cc | www.408168.com | www.93518.cc | 925790.com | www.mg35.com | www.cai0255.com | www.6231.pw | www.51582.cc | 696270.com | www.645881.com | www.630282.com | www.617028.com | www.676793.com | www.803869.com | www.2904.pw | www.47tq.com | www.191237.com | www.181862.com | 010043.com | www.410900.com | www.593456.com | www.66533.cc | www.jj29.com | 375958.com | www.493890.com | www.58188.com | 137903.com | www.mw27.com | www.858246.com | www.7900.vip | www.282697.com | 761269.com | www.561.red | www.114018.com | 393514.com | www.087826.com | www.789840.com | www.0443.xyz | www.384966.com | www.794654.cc | www.dt28.cc | www.713234.com | www.627608.com | www.39757.com | www.088731.com | www.397838.com | www.903301.com | www.024799.com | www.219017.com | www.68680.com | www.554504.com | www.916155.com | 772640.com | www.16335.cc | 008257.com | www.52576.cc | www.804706.com | www.74kq.com | www.058618.com | www.259782.com | www.sh62.cc | www.974070.com | www.33606.cc | www.837966.com | 368501.com | 358383.com | www.jj71.com | www.221851.com | www.837847.com | www.843588.com | www.t50.org | www.156622.com | 397462.com | www.16at.com | www.6514.xyz | www.xv3.cc | www.3764.vip | www.939116.com | www.587176.com | www.395612.com | 329124.com | www.7338.cm | www.056200.com | www.365810.com | www.888117.com | 611975.com | 8号彩票www.60108l.com | www.9591.loan | www.99503.com | www.839611.com | www.967992.com | www.60216.com | www.393385.com | www.al63.com | www.zq91.cc | www.322712.com | www.748804.com | 大赢家彩票平台www.369052.com | 374067.com | www.080165.com | www.19ds.cc | www.99889.com | www.836803.com | C9999www.318548.com | www.00716.com | www.0689.top | www.365595.cc | www.636341.com | www.432932.com | www.274511.com | www.131331.com | www.326982.com | www.687113.com | www.n23.tv | www.6330.net | www.557053.com | 673502.com | www.0278.biz | www.213861.com | 190928.com | www.qr13.com | 134277.com | www.397484.com | www.320397.com | www.529885.com | www.579869.com | www.672661.com | 中国福利彩票www.33588d.com | 256566.com | 840838.com | 13603.com | www.188584.com | www.820076.com | www.181460.com | www.04442.com | 大赢家彩票平台www.721662.com | 352448.com | www.584933.com | www.695391.com | www.949876.com | 174932.com--09320.com | www.977547.com | 675532.com | www.802739.com | www.375770.com | www.755417.com | www.027908.com | 957046.com | www.22849.com | www.603300.com | www.423559.com | www.686706.com | www.543558.com | www.9865.cm | www.530.cm | 500彩票www.338082.com | www.928553.com | 023726.com | www.cp3.cn | www.253167.com | www.568418.com | 432113.com | www.21pg.com | www.167253.com | www.445135.cc | www.749228.com | 562173.com | 049572.com | 网易彩票www.506291.com | www.446481.com | www.272963.com | www.055823.com | www.88938.cc | www.006828.com | www.520464.com | www.qo59.com | 630568.com | 梦想彩票站www.43131d.com | www.639584.com | 953694.com | www.cx98.com | 244211.com | www.607915.com | www.00bx.com | www.6476.xyz | www.039961.com | 09nu.com | 500彩票www.524277.com | www.93ed.com | www.150492.com | www.937.bid | www.025355.com | www.379646.com | 692008.com | www.930296.com | www.53296.cc | 万彩网www.wcp666888.com | 凤凰彩票www.77801l.com | www.as69.com | www.09052.com | www.3311.net | www.723559.com | www.251169.com | www.ww61.com | www.590568.com | www.63667.com | www.033262.com | 030656.com | www.57pj.cc | www.217620.com | www.062947.com | www.181469.com | www.380311.com | www.591568.com | www.521040.com | cai8777.com | www.6162.biz | www.wb02.com | 898976.com | 550630.com | www.cp294.com | www.728438.com | www.857307.com | www.40ug.com | 博乐彩票www.35918v.com | www.949247.com | www.981734.com | www.658834.com | www.116411.com | www.43hq.com | www.315325.com | www.700463.com | www.862580.com | www.234118.com | www.4813.cm | www.531291.com | 781467.com | www.255363.com | www.s32.bid | www.273567.com | www.669540.com | 692096.com | www.964191.com | www.206137.com | www.173151.com | www.3870.vip | www.327520.com | www.588908.com | www.949526.com | www.875934.com | www.53iu.com | www.mr57.com | www.954583.com | 107809.com | www.51236.com | www.930868.com | www.986440.com | www.920061.com | www.811733.com | 964335.com | 500彩票网www.65707s.com | www.85jv.com | www.y63.net | www.78xl.com | www.834.cm | www.44074.com | 404422.com | www.020473.com | www.171623.com | www.483903.com | www.460071.com | www.027025.com | www.6907.me | www.cw68.com | 090191.com | 198349.com | 彩之堂www.33czt.com | www.548.cm | www.052826.com | www.603917.com | www.559998.com | www.8060.in | www.78248.com | www.113071.com | www.96891.cc | www.275635.com | www.210679.com | www.215972.com | www.563110.com | www.666993.com | 80058.cc | www.cp8116.com | www.566627.com | www.32778.com | www.h20.com | www.22iv.com | www.n67.org | www.tz56.com | 769233.com | www.560932.com | www.18903.com | www.700427.com | www.478669.com | www.508345.com | 544918.com | www.230286.com | www.406455.com | www.505521.com | 809335.com | www.520234.com | www.5292.biz | www.969321.com | www.132507.com | www.8476.top | 012358.cc | www.563730.com | 53331.cc | 902670.com | www.5600.wang | www.7718.com | 357306.com | www.310611.com | www.949036.com | www.pj34.cc | www.2540.net | www.655941.com | 376981.com | www.ps15.com | www.0560.cn | www.773421.com | www.969159.com | 621605.com | 90ct.com | www.172158.com | www.187702.com | www.840638.com | www.675656.com | 488418.com | 565086.com | 032334.com | www.7328.tv | www.94ky.com | www.133258.com | www.712789.cc | www.697153.com | www.920833.com | www.580129.com | www.316990.com | www.1424.cn | www.6051.biz | www.851560.com | 472007.com | 922836.com | vn74.com | 4527.biz | www.vn72.com | www.2023.red | www.172700.com | www.339545.com | 415789.com | www.1084.vip | www.389257.com | www.525719.com | www.781542.com | www.1966.club | www.639382.com | www.699356.com | 616254.com | 22678.com | 040981.com | www.712018.com | www.698947.com | 561801.com | www.ix2.com | www.ip02.com | www.gn88.cc | www.03yf.com | www.001473.com | www.497658.com | www.489321.com | www.882822.com | www.88645.cc | www.77174.com | www.000734.com | 263627.com | www.968218.com | 幸运众彩www.108013.com | www.03qu.com | www.083758.com | www.982064.com | www.890428.com | www.20578.com | www.89827.cc | www.80ww.com | www.505492.com | www.760514.com | www.972992.com | www.894835.com | 258849.com | www.0wj.com | www.12jx.com | www.72266.com | 634599.com | www.953415.com | www.85yb.com | www.515508.com | www.2025.tv | 748468.com | www.881986.com | www.sm13.com | www.496725.com | 793075.com | www.81vd.com | www.081225.com | www.040315.com | www.372448.com | www.345642.com | www.323392.com | www.144055.com | www.60915.com | www.112203.com | www.949131.com | 707011.cc | www.788041.com | www.471847.com | www.275525.com | www.011986.com | www.2621.pw | www.2968.shop | www.tg88.com | www.944798.com | www.zw0.cc | www.505486.com | www.910342.com | www.704569.com | www.316457.com | www.yh70.com | www.7774.in | www.052335.com | www.65167.com | www.227725.com | www.625216.com | www.502611.com | www.571821.com | www.62pq.com | www.481890.com | www.ft07.com | www.93547.com | www.233885.com | www.683133.com | www.0020.pw | www.331064.com | www.326689.com | www.418121.com | www.298556.com | www.567572.com | www.370061.com | www.270805.com | www.378812.com | 幸运彩票www.5095c.com | 500彩票www.401269.com | www.066347.com | www.21341.com | www.18213.com | www.1380.me | www.18148.cc | www.621937.com | www.654688.com | www.781237.com | www.984517.com | www.914464.com | www.7818.pw | 771781.com | www.458421.com | www.oc09.com | www.861.tv | www.gr34.com | 810286.com | www.463311.com | www.440005.com | www.84840.cc | www.75mw.com | www.97ll.cc | www.062363.com | 119174.com | 024631.com | www.41652.com | www.2797.com | www.6740.net | 791420.com | www.548342.com | www.499105.com | www.717861.com | www.440809.com | www.618524.com | www.548233.com | www.257651.com | www.37939.com | www.su03.com | www.25sv.com | www.ui60.com | www.439678.com | www.753270.com | www.887997.com | 亿发彩票www.803733.com | 009084.com | 694178.com | www.975248.com | www.273539.com | www.19725.cc | www.883885.com | www.411401.com | www.08711.com | www.538.cm | www.205290.com | www.151363.com | www.320004.com | www.157122.com | www.352231.com | www.336562.com | www.961103.com | www.191166.com | www.n31.com | www.776461.com | www.224887.com | www.354.in | www.747939.com | www.599976.com | www.474996.com | www.366161.com | www.ni8.com | 老彩票www.775701.com | 679701.com | 134872.com | 五星彩票www.5xci.com | www.4338.vip | www.y86.net | www.vf01.com | 华彩www.71399v.com | www.25993.cc | www.6440.vip | www.1431.biz | www.015376.com | www.44419.cc | www.3567.biz | www.70jn.com | www.611452.com | www.095705.com | www.77132.cc | www.102198.com | www.79813.com | www.66360.com | www.159027.com | www.123489.cc | www.58579.cc | www.206130.com | www.067714.com | www.096895.com | www.138312.com | www.200147.com | www.022041.com | www.9638.bid | www.0760.site | www.56575.com | www.48047.com | www.37299.cc | www.002.bid | www.89922.cc | www.168567.com | www.072147.com | www.435676.com | www.628152.com | www.970349.com | 849326.com | www.418704.com | www.cai9877.com | www.bt10.com | www.8896.org | www.9358.xyz | www.326543.com | www.268203.com | www.359627.com | www.712661.com | www.756591.com | www.397072.com | www.660380.com | www.798942.com | www.604495.com | www.365429.cc | www.575205.com | www.523254.com | www.369194.com | www.394322.com | www.276219.com | www.654271.com | 280881.com | 918彩票网www.918io.com | 070757.com | 459429.com | www.982018.com | www.782715.com | 753388.com | www.636208.com | www.173271.com | www.mk02.com | 034250.com | www.631779.com | www.xd45.com | www.zf29.com | www.ih3.cc | www.374972.com | www.7222.live | www.962527.com | www.84mx.com | www.52ir.cc | www.3443.xyz | www.0398.bid | www.985420.com | www.953693.com | www.521763.com | www.29233.cc | www.75oq.com | www.e56.wang | 99彩票www.99849.cc | 969466.com | www.15693.cc | www.05dx.com | www.ki72.com | www.vs06.com | 18931.cc | www.97211.cc | 747670.com | www.638217.com | www.54587.com | www.202288.com | www.69177.cc | www.6754.xyz | www.117559.com | www.63744.com | www.227160.com | www.536179.com | www.74ts.com | 530507.com | 775049.com | 购彩在线www.66332s.com | www.285233.com | 026374.com | 026014.com | www.891988.com | www.767188.com | www.86331.cc | www.926603.com | www.659413.com | www.819666.cc | www.625028.com | www.918506.com | www.668896.com | www.503055.com | www.739102.com | 亚洲彩票联盟www.696776.com | www.640813.com | 470055.com | www.010.bid | www.96629.cc | 616584.com | www.358423.com | www.562565.com | www.3029.com | www.8450.vip | www.962924.com | www.234669.com | 博汇www.828916.com | www.589035.com | www.945130.com | www.059449.com | 039094.com | www.502351.com | www.896050.com | www.731205.com | www.350896.com | www.8gs.cc | www.109822.com | www.623933.com | www.622248.com | 864792.com | 385203.com | 874933.com | 01929.com | www.1872.com | www.89557.com | www.7744.vip | www.24.m