1. Inkcazelo yeefayibha ze-aramid
I-Aramid fiber ligama elidityanisiweyo lee-aromatic polyamide fibers.
2. Ukwahlulahlula iifayibha ze-aramid
I-Aramid fiber ngokwesakhiwo se-molecular ingahlulwahlulwa ibe ziintlobo ezintathu: i-para-aromatic polyamide fiber, i-inter-aromatic polyamide fiber, i-aromatic polyamide copolymer fiber. Phakathi kwazo, i-para-aromatic polyamide fibers yahlulwe yaba yi-poly-phenylamide (poly-p-aminobenzoyl), i-poly-benzenedicarboxamide terephthalamide fibers, i-inter-position benzodicarbonyl terephthalamide fibers yahlulwe yaba yi-poly-m-tolyl terephthalamide fibers, i-poly-N,Nm-tolyl-bis-(isobenzamide) terephthalamide fibers.
3. Iimpawu zeefayibha ze-aramid
1. Iimpawu ezilungileyo zoomatshini
I-Interposition aramid yipolymer eguquguqukayo, ephula amandla ngaphezu kwe-polyester eqhelekileyo, umqhaphu, i-nylon, njl.njl., ubude bukhulu, buthambile xa buchukunyiswa, buyakwazi ukujikeleza kakuhle, bunokuveliswa bube bubuncinci obahlukeneyo, ubude beefayibha ezimfutshane kunye neefilaments, ngokubanzi oomatshini belaphu abenziwe ngeenombolo ezahlukeneyo zeentambo ezilukiweyo zibe ngamalaphu, amalaphu angalukwanga, emva kokugqitywa, ukuhlangabezana neemfuno zeendawo ezahlukeneyo zempahla yokukhusela.
2. Ukumelana kakuhle komlilo nobushushu
I-limiting oxygen index (LOI) ye-m-aramid yi-28, ngoko ayiqhubeki ivutha xa iphuma elangatyeni. Iimpawu ze-m-aramid ezithintela ilangatye zimiselwa bubume bayo beekhemikhali, nto leyo eyenza ukuba ibe yifayibha ethintela ilangatye ngokusisigxina engaboliyo okanye ilahlekelwe ziimpawu zayo ze-flame ezithintela ilangatye ngokuhamba kwexesha okanye ngokuhlanjwa. I-m-aramid izinzile ngokobushushu kwaye ingasetyenziswa rhoqo kwi-205°C kwaye igcina amandla aphezulu kumaqondo obushushu angaphezu kwe-205°C. I-m-aramid inobushushu obuphezulu bokubola kwaye ayinyibiliki okanye ithontsi kumaqondo obushushu aphezulu, kodwa iqala ukutsha kuphela kumaqondo obushushu angaphezu kwe-370°C.
3. Iimpawu zeekhemikhali ezizinzileyo
Ukongeza kwiiasidi eziqinileyo kunye neziseko, i-aramid ayichaphazeleki zizinto ezinyibilikisayo kunye neeoyile eziphilayo. Amandla amanzi e-aramid aphantse alingane namandla omileyo. Ukuzinza komphunga wamanzi ogcweleyo kungcono kunokwezinye iifayibha eziphilayo.
I-Aramid ayivani kakhulu nokukhanya kwe-UV. Ukuba ivezwa elangeni ixesha elide, ilahlekelwa ngamandla amaninzi kwaye ke ngoko kufuneka ikhuselwe ngomaleko okhuselayo. Olu maleko okhuselayo kufuneka lukwazi ukuthintela umonakalo kwi-aramid skeleton ekukhanyeni kwe-UV.
4. Ukumelana nemisebe
Ukumelana nemisebe ye-interposition aramids kuhle kakhulu. Umzekelo, phantsi kwe-1.72x108rad/s ye-r-radiation, amandla ahlala engaguquki.
5. Ukuqina
Emva kokuhlamba izihlandlo ezili-100, amandla okukrazula kwamalaphu e-m-aramid asenokufikelela ngaphezulu kwe-85% yamandla awo okuqala. Ukumelana nobushushu be-para-aramids kuphezulu kunokwe-inter-aramids, kunye nomgangatho wobushushu osetyenziswa rhoqo ukusuka kwi--196°C ukuya kwi-204°C kwaye akukho kuboleka okanye ukunyibilika kwi-560°C. Uphawu olubalulekileyo lwe-para-aramid kukuqina kwayo okuphezulu kunye ne-modulus ephezulu, amandla ayo angaphezu kwe-25g/dan, okuphindwe ka-5~6 yentsimbi esemgangathweni ophezulu, ka-3 yefayibha yeglasi kunye ka-2 yeyayile ye-nylon enamandla ephezulu; i-modulus yayo iphindwe ka-2~3 yefayibha yentsimbi okanye yeglasi esemgangathweni ophezulu kunye ka-10 yeyayile ye-nylon enamandla ephezulu. Ulwakhiwo olukhethekileyo lomphezulu we-aramid pulp, olufunyanwa yi-surface fibrillation yeefayibha ze-aramid, luphucula kakhulu ukubamba kwe-compound kwaye ke ngoko lufanelekile njengefayibha yokuqinisa ukungqubana kunye nokutywina iimveliso. I-Aramid Pulp eneHexagonal Special Fibre I I-Aramid 1414 I-Pulp, inombala otyheli okhanyayo, ithambile, inee-plumes ezininzi, inamandla aphezulu, izinzo ezilungileyo, ayiqhekeki, ayimelani nobushushu obuphezulu, ayimelani nokugqwala, iqinile, ayinciphi, ayimelani nokugqwala, indawo enkulu, ibotshelelwe kakuhle nezinye izinto, izinto eziqinisayo ezinokubuyiselwa kokufuma kwe-8%, ubude obuphakathi be-2-2.5mm kunye nommandla womphezulu we-8m2/g. Isetyenziswa njengezinto zokuqinisa i-gasket ezinokuqina okuhle kunye nokusebenza kokuvala, kwaye ayinabungozi kwimpilo yabantu nakwindalo esingqongileyo, kwaye ingasetyenziselwa ukuvala emanzini, ioyile, i-asidi engaqhelekanga nephakathi kunye ne-alkali media. Kuye kwangqinwa ukuba amandla emveliso alingana ne-50-60% yeemveliso eziqinisiweyo zefayibha ye-asbestos xa kongezwa ngaphantsi kwe-10% ye-slurry. Isetyenziselwa ukuqinisa izinto zokungqubana kunye nokuvala kunye nezinye iimveliso ezenziweyo, kwaye ingasetyenziswa njengendlela eyahlukileyo ye-asbestos kwizinto zokugquma zokungqubana, iphepha lokukhusela elisebenza kakuhle kunye nezinto ezihlanganisiweyo eziqinisiweyo.
Ixesha lokuthumela: Agasti-01-2022