yabo88登陆

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yabo88登陆

2020年12月14日
yabo88登陆研制各向同性全生物质仿生木材

mucaiyizhishibeiguangfanshiyongdeyizhongjiegoucailiao,dantianranshimushouzhiyudachicuncailiaodexiyouxinghelixuedegexiangyixing,yincimuqianguangfanshiyongdegongchengmucailiaozhuyaoshirenzaoban。renzaobanlingyushichangguimojuda,woguorenzaobannianchanliangchaoguo3.25yilifangmi,shichangguimojinwanyiyuan。chuantongrenzaobanzhuyaotongguohanyoujiaquandeshuzhidengzhanhejijiangmuxiedengshengwuzhiyuanliaozhanjieqilai,zheibujintigaolerenzaobandechengben,haihuizaishiyongguochengzhongchixushifangjiaquandengyouduyouhaideqiti,youhaishiyongzhedeshentijiankang。yinci,fazhangaoxingnengwujiaquanlvsehuanbaobancaiduichuantongrenzaobanchanyeshengjifazhanzhiguanzhongyao。

jinri,yabo88dengluyushuhongyuanshituanduitongguoshenrujiexishengwuzhiweiguanjiegou,tichuleyizhongliyongshengwuzhitianrannamijiegoudequanxindeshengwuzhibiaomiannamihuacelve,jiyuzheizhongcelvegouzhuleyizhongkechixuxinxinggexiangtongxingfangshengmucai(“rgi-wood”)。gaicelveqiaomiaodiliyonglemuxiedengshengwuzhizhongtianrandexianweisunamixianwei,jiangqibaoluzaimuxiekelibiaomian,bingshiqihuxiangjiaoliancongergouzhuwuxurenhezhanhejidegaoxingnengrenzaomucai(tu1)。xiangguanyanjiuchengguoyu12yue12riyi“regenerated isotropic wood”weitifabiaozai《guojiakexuepinglun》national science reviewshang。

图1.基于自下而上微米/纳米结构设计制备各向同性木材(RGI-wood)的示意图。(a)天然木屑图片;(b)表面蚀刻后的木屑颗粒;(c)表面纳米化的木屑(SNWP)结构示意图;(d)Ca2+和氢键诱导的SNWP的组装过程;(e)通过热压制备RGI-wood。

2.yabo88登陆各向同性仿生木材与天然木材的性能对比。(a)弯曲强度对比;(b)压缩强度对比;(c)各向同性仿生木材具有远超常用聚合物材料的强度和模量;(d)与天然木材的燃烧热释放率对比;(e)与天然木材的燃烧失重对比;(f)与天然木材的燃烧发烟量对比。

yabo88登陆yunyongzheizhongcelvesuozhibeiderenzaomucaizaigefangxiangshangjuyouxiangtongdelixueqiangdu,qiechaoyueleshimucaihechuantongrenzaoban。zheizhongxinxingrenzaomucaizixiaershangdezhibeifangshishiqizaichicunshangjiangbushouxianzhi,keyikefudakuaishimucailiaodexiquexing,dadatuokuanlezheileimuzhicailiaodeyingyongfanwei。lingwai,qihaibiaoxianchuyouyidezuranxingxinghefangshuixing。zaizheizhonggaoxingnengrenzaomucaizhong,weimijimuxiekelidebaoluzhedaliangdenamichidudexianweisuxianwei,zheixienamixianweitongguolizijian、qingjian、fandehualiyijiwulijiuchandengxianghuzuoyongjiehezaiyiqi,weimijidemuxiekeliyebeizheixiehuxiangchanraodenamixianweiwangluojinmidijieheyiqixingchenggaoqiangdudezhimijiegou,erwuxutianjiarenhezhanjieji。zheizhongjiegoutezhengdailailegaoda170 mpadegexiangtongxingkangwanqiangduheyue10 gpadewanqumoliang,yuanchaotianranshimudelixueqiangdu。ciwai,xinxingrenzaomucaihaixianshichuyouyideduanlierenxing,jixiankangyaqiangdu,yingdu,kangchongjixing,chicunwendingxingyijiyouyutianranmucaidezuranxing。zuoweiyizhongquanshengwujidehuanbaocailiao,xinxingrenzaomucaibujinbuhanrenhezhanjieji,haijuyouyuanchaoshuzhijicailiaohechuantongsuliaodelixuexingneng,yincijuyoufeichangguangfandeyingyongqianjing。

ciwai,zheizhongyounamixianweigouchengdewangluoyeweizhibeimujinamifuhecailiaotigongleyizhongxintujing。tongguojiangtannamiguan(cnt)chanrumuxiekelijiandenamiwangluodangzhong,keyihuodedaodianzhinengrenzaomucai,yintannamiguannenggouzaiqizhongxingchenglianxudesanweiwangluo,yinciqijuyoubichuantongjuhewu/tannamiguanfuhecailiaogenghaodedaodianwangluohegenggaodiandaolv。jiyuzheizhongzhinengrenzaomucaidegaodaodianxing,takeyishixianchuangan、zifareyijidiancipingbidengduozhongyingyong。zheizhongzhinengrenzaomucaibiaoxianchulechusedediancipingbixingneng(xboduanchaoguo90 db),keyimanzujingmidianziyiqipingbibiaozhundeyaoqiu。zheizhongzhinengrenzaomucaihaikeyizai1.75 vdidianyaxia(yuedengyuliangjiewuhaodianchidedianya)shixianzifare,kezai5fenzhongneishengzhi60sheshidu,zheizhongzaididianyaxiajikezifaremucaikeyouxiaodiquebaozijiareshebeideanquanxing,tongshijianshaonenghao。

yabo88登陆zheixiangyanjiutichuleyizhongshengwuzhikelibiaomiannamihuafangfahecelve,keyongyugouzhuquanshengwuzhi,buhanrenhezhanjieji,juyouyouyidelixuexingneng,kefuhedexinxingrenzaomucai。tongshi,zheizhongquanxindeshengwuzhibiaomiannamihuacelveyekeyikuozhandaoqitashengwuzhi(liru,shuye、daocaohejiegandeng),bingkeyishixianduogongnenghua,youwangyongyuzhizaoyixilielvsequanshengwuzhidekechixujiegoucailiao,jiangjinyibutuidongrenzaobanxingyexianglvse、huanbaoheditanfangxiangfazhan。

yabo88登陆zheixiangyanjiushoudaoguojiazirankexuejijinweichuangxinyanjiuqunti、guojiazirankexuejijinzhongdianxiangmu、zhongguokexueyuanqianyankexuezhongdianyanjiuxiangmu、zhongguokexueyuannamikexuezhuoyuechuangxinzhongxin、hefeizonghexingguojiakexuezhongxindengzizhu。

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(hefeiweichiduwuzhikexueguojiayanjiuzhongxin、huaxueyucailiaokexuexueyuan、keyanbu)


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