1.Inkcazo yeefiber ze-aramid
I-Aramid fiber ligama elidityanisiweyo leentsinga zepolyamide ezinuka kamnandi.
2.Ukuhlelwa kweefiber ze-aramid
Ifayibha yeAramid ngokwesakhiwo semolekyuli inokwahlulwa ibe ziindidi ezintathu: ifayibha ye-para-aromatic polyamide, ifayibha ye-polyamide enuka kamnandi, ifayibha ye-polyamide enuka kamnandi. Phakathi kwazo, iintsinga ze-para-aromatic polyamide zahlulwe zibe yi-poly-phenylamide (poly-p-aminobenzoyl) fibers, i-poly-benzenedicarboxamide terephthalamide fibers, i-inter-position benzodicarbonyl terephthalamide fibers yahlulwe ibe yi-poly-m-tolyl terephthalamide fibers, i-poly-N, I-Nm-tolyl-bis-(isobenzamide) i-terephthalamide fibers.
3.Iimpawu ze-aramid fibers
1. Iimpawu ezilungileyo zoomatshini
I-aramid ye-interposition yi-polymer eguquguqukayo, ukomelela ukophuka okuphezulu kune-polyester eqhelekileyo, umqhaphu, inayiloni, njl. njl., ubude bukhulu, buthambile ekubambeni, i-spinnability elungileyo, inokuveliswa ibe bubuncinci obahlukeneyo, ubude bemicu emifutshane kunye nemicu, kwilaphu ngokubanzi. oomatshini abenziwe ngemisonto eyahlukeneyo babala abalukiweyo kwiilaphu, amalaphu angalukwanga, emva kokugqiba, ukuhlangabezana neemfuno zemimandla eyahlukeneyo yempahla ekhuselayo.
2. Ilangatye eligqwesileyo kunye nokumelana nobushushu
Isalathiso seoksijini emiselweyo (LOI) ye-m-aramid ngama-28, ngoko ke ayiqhubeki nokuvutha xa ishiya ilangatye. Iimpawu zokubuyiswa komlilo we-m-aramid zimiselwa sisimo sayo sekhemikhali, nto leyo eyenza ukuba ibe yintsinga ebambezele idangatye ngokusisigxina engohlisiyo okanye iphulukane neempawu zayo zokunqanda amadangatye ngexesha okanye ngokuhlamba. I-m-aramid izinzile ngokobushushu kwaye ingasetyenziswa ngokuqhubekayo kwi-205°C kwaye igcina amandla aphezulu kumaqondo obushushu angaphezu kwama-205°C. I-m-aramid inobushushu obuphezulu bokubola kwaye ayinyibiliki okanye ithontsize kumaqondo obushushu aphezulu, kodwa iqala ukutsha kumaqondo obushushu angaphezu kwama-370°C.
3. Iimpawu zeekhemikhali ezizinzileyo
Ukongeza kwi-acids ezomeleleyo kunye neziseko, i-aramid ayichatshazelwanga zii-solvents eziphilayo kunye namafutha. Amandla amanzi e-aramid aphantse alingane namandla omileyo. Uzinzo lomphunga wamanzi ohluthisiweyo lungcono kunolo lwezinye iintsinga eziphilayo.
I-Aramid inochuku kukukhanya kwe-UV. Ukuba ubonakaliswe elangeni ixesha elide, ulahlekelwa amandla amaninzi kwaye ngoko kufuneka ukhuselwe ngoluhlu olukhuselayo. Lo maleko okhuselayo kufuneka ukwazi ukubhloka umonakalo kwi-aramid skeleton ekukhanyeni kwe-UV.
4. Ukumelana nemitha
Ukumelana nemitha ye-interposition aramids kuhle kakhulu. Umzekelo, phantsi kwe-1.72x108rad/s ye-r-radiation, amandla ahlala ehleli.
5. Ukuqina
Emva kokuhlanjwa kwe-100, amandla okukrazula amalaphu e-m-aramid asenokufikelela ngaphezulu kwe-85% yamandla awo okuqala. Ukumelana nobushushu be-para-aramids kuphezulu kune-inter-aramids, kunye neqondo lokushisa eliqhubekayo lokusetyenziswa kwe -196 ° C ukuya kwi-204 ° C kwaye akukho ukubola okanye ukunyibilika kwi-560 ° C. Olona phawu lubalulekileyo lwepara-aramid ngamandla ayo aphezulu kunye nemodyuli ephezulu, amandla ayo angaphezulu kwe-25g/dan, eyi-5 ~ 6 amaxesha omgangatho ophezulu wentsimbi, amaxesha ama-3 efiber yeglasi kunye namaxesha ama-2 amandla aphezulu we-nylon yamashishini. ; imodyuli yayo ngamaxesha angama-2 ~ 3 entsimbi ekumgangatho ophezulu okanye ifayibha yeglasi kunye namaxesha ali-10 omelele kakhulu umsonto wenayiloni woshishino. Isakhiwo esiyingqayizivele somphezulu we-pulp ye-aramid, efunyenwe nge-fibrillation ye-surface ye-aramid fibers, iphucula kakhulu ukubamba i-compound kwaye ngoko ifanelekile njengefayibha yokuqinisa i-friction kunye nokutywinwa kweemveliso. I-Aramid Pulp Hexagonal Special Fiber I Aramid 1414 I-Pulp, i-flocculent etyheli ekhanyayo, i-plush, eneeplamu ezininzi, amandla aphezulu, uzinzo oluhle lwe-dimensional, i-non-brittle, ukumelana nobushushu obuphezulu, i-corrosion resistant, iqinile, i-shrinkage ephantsi, ukumelana kakuhle kwe-abrasion, indawo enkulu yomhlaba. , ukudibanisa okulungileyo kunye nezinye izinto, izinto eziqiniswayo kunye nokubuyiswa komswakama we-8%, ubude obuphakathi kwe-2-2.5mm kunye nommandla we-8m2 / g. Isetyenziswe njengento yokuqinisa i-gasket enokuqina kakuhle kunye nokusebenza kokutywinwa, kwaye ayinabungozi kwimpilo yabantu kunye nokusingqongileyo, kwaye ingasetyenziselwa ukutywinwa emanzini, i-oyile, i-acid engaqhelekanga kunye nephakathi kunye ne-alkali media. Kuye kwaqinisekiswa ukuba amandla emveliso alingana ne-50-60% yeemveliso ze-asbestos ze-fiber eziqinisiweyo xa ngaphantsi kwe-10% ye-slurry yongezwa. Isetyenziselwa ukuqinisa ukukhuhla kunye nokutywina kunye nezinye iimveliso ezenziweyo, kwaye inokusetyenziswa njengenye indlela ye-asbestos kwizinto zokutywinwa zokutywina, ukusebenza okuphezulu kwephepha lokugquma ubushushu kunye nemathiriyeli edibeneyo edibeneyo.
Ixesha lokuposa: Aug-01-2022