Kutanga, ipa chidzidzo sumo pfupi kune aramid nePE.
Aramid fiber midziyo Aramid, inozivikanwawo seKevlar (zita remakemikari inonzi phthalamide) akazvarwa mukupera kwema1960. Irwo rudzi rutsva rwehigh-tech synthetic fiber, ine high tembiricha kuramba, asidhi uye alkali kuramba., Chiremba uremu, simba rakawanda uye zvimwe zvakanakira, yakashandiswa zvakanyanya mumidziyo yekudzivirira-bullet-proof, kuvaka uye midziyo yemagetsi nezvimwe. minda.
Asi aramid inewo zvikanganiso zviviri zvinouraya:
1) Ichadzikisira paunosangana nemirairo ye ultraviolet; iri nyore kuita hydrolyze, kunyangwe ikachengetwa munzvimbo yakaoma, inotora unyoro mumhepo uye zvishoma nezvishoma hydrolyze.
Naizvozvo, aramid bulletproof inopinza uye bulletproof vests hazvina kukodzera kushandiswa kwenguva refu mune yakasimba ultraviolet uye humid environments, izvo zvichanyanya kuderedza kushanda kwavo kwekudzivirira uye hupenyu hwebasa. Pamusoro pezvo, kugadzikana kwakashata uye hupenyu hupfupi hwearamid zvakare inodzikamisa kushandiswa kwearamid mumunda webulletproof.
Mutengo wepamusoro-soro aramid wakakwirawo kupfuura wePE, inogona kunge iri 30% kusvika 50% yakawanda. Parizvino, zvigadzirwa zvisingapindi bara vachishandisa aramid zvakadzikira zvishoma nezvishoma uye zvakatanga kutsiviwa nezvigadzirwa zvePE bulletproof. Kunze kwekunge iri munharaunda yakakosha kana ine zvakakosha zvinodiwa, senge tembiricha yepamusoro yeMiddle East, zvinokurudzirwa kushandisa PE zvinhu bulletproof midziyo.
1. PE yakambotaurwa muPE fiber midziyo inoreva chaizvo UHMW-PE, inova yepamusoro-yepamusoro molecular weight polyethylene. Iyo yakakwira-inoshanda organic fiber yakagadzirwa mukutanga 1980s, uye inonzi nyika nhasi pamwe nekabhoni fiber uye aramid. Matatu epamusoro-tech fiber. Iwo mabhegi epurasitiki anoshandiswa muhupenyu hwedu hwezuva nezuva zvigadzirwa zve polyethylene, zvine kugadzikana kwepamusoro uye zvakanyanya kuoma kudzikisira, izvo zvinokonzeresa kusvibiswa kwezvakatipoteredza. Asi ndizvo chaizvo nekuda kwehunhu uhu hwave chinhu chakanakira kugadzira nhumbi dzokurwa dzemuviri. Mukuwedzera, ine hunhu hwekudzikira tembiricha kuramba, UV kuramba, uye kudzivirira mvura.
Panyaya yekudzivirira kubva kune yakaderera-speed mabara, UHMW-PE fiber's ballistic resistance inenge 30% yakakwirira kudarika yearamid fiber;
Panyaya yekudzivirira kubva kune-high-speed bullets, iyo bulletproof kugona kweUHMW-PE fiber ndeye 1.5 kusvika 2 nguva yearamid fiber, saka PE parizvino inozivikanwa seyemhando yepamusoro-soro.
Nekudaro, UHMW-PE zvakare ine zvimwe zvinokanganisa: kupisa kwayo kwekushisa kwakanyanya kushoma pane iyo aramid. Iyo tembiricha yekushandisa yeUHMWPE bulletproof zvigadzirwa inoda kudzorwa mukati me80 ° C (iyo inogona kusangana nezvinodiwa tembiricha zvemuviri wemunhu uye midziyo -kupikiswa kwekushisa 55 ° C). Kana tembiricha iyi yadarika, kushanda kwayo kuchadonha nekukurumidza, uye kana tembiricha yasvika 150°C kana kupfuura, inonyungudika. Iyo aramid bulletproof zvigadzirwa zvinogona kuramba zvakagadzikana chimiro uye yakanaka kuchengetedza kuita munzvimbo yakanyanya tembiricha ye200 ℃. Naizvozvo, zvigadzirwa zve PE bulletproof hazvina kukodzera kushandiswa munzvimbo dzakanyanya kupisa.
Uye zvakare, iyo inokambaira kuramba yePE haina kunaka seye aramid, uye zvishandiso zvinoshandisa PE zvinokanganisa zvishoma nezvishoma kana zvichiiswa mukumanikidzwa kunoramba kuripo. Naizvozvo, midziyo yakaita sengowani ine maumbirwo akaomarara uye inoda kumira kumanikidza kwenguva yakareba haigone kugadzirwa nePE.
Pamusoro peaya maitiro, mutengo wePE wakaderera zvakanyanya pane wearamid sezvambotaurwa.
Kazhinji, PE uye aramid vane zvavo zvakanakira nekuipira. Nekudaro, iri kunyanya kushandiswa mazuvano kushandisa PE senge bulletproof layer. Zvichiri kudikanwa kusarudza iyo bulletproof midziyo inokodzera iwe zvinoenderana nemamiriro ako chaiwo.
Nguva yekutumira: Aug-20-2021
