Iifayibha zePolypropylene zisetyenziswa kakhulu kwikhonkrithi:
1) Thintela ukuqhekeka kweplastiki kwikhonkrithi.
Ngexesha lokuseta nokuqinisa i-concrete, ukulahleka kwamanzi angaphezulu kunokukhokelela ekuncipheni kweplastiki kunye nokuqhekeka. Ukongeza ii-polypropylene fibers kwi-concrete kunokuthintela ezi qhekeko. Ngenxa ye-modulus ephantsi ye-elastic ye-polypropylene fibers xa ithelekiswa ne-concrete eqinileyo, ukuphucuka kokuxhathisa ii-crack (ukuqhekeka okubangelwa kuxinzelelo lobushushu okanye umthwalo woomatshini) kwi-concrete eqinileyo kuncinci, kwaye ukuphucuka kwamandla okuxinana kunye nokugoba akubalulekile, okunokuphucula okuthile kwi-concrete eqinileyo.
2) Ukuphucula ukumelana nomlilo kwekhonkrithi eqinileyo. Phantsi kwesenzo sobushushu obuphezulu, iifayibha ze-polypropylene ziya kuqala zithambe kwaye zitshise, zenze iimbobo ezininzi kwikhonkrithi. Amanzi aphehlwa ngubushushu obuphezulu kwikhonkrithi anokukhutshwa ecaleni kwezi mbobo, ethintela ukwakheka koxinzelelo oluphezulu lwangaphakathi ngenxa yokufuma kwamanzi kwaye kubangele ukuba ikhonkrithi iqhume, ngaloo ndlela iphucula kakhulu ixesha lokumelana nomlilo kunye nomgangatho wekhonkrithi.
Iifayibha zePolypropylene zinokwahlulwa zibe ziifayibha ezinde, iifayibha ezimfutshane, iifayibha ezingalukwanga ze-spunbond, iifayibha ezingalukwanga ezinyibilikisiweyo, njl.njl.
(1) Ilula
Uxinano lwefayibha yepolypropylene yi-0.90-0.92 g/cm, eyona ilula kakhulu kuzo zonke iifayibha zeekhemikhali, ilula ngama-20% kunenylon, ilula ngama-30% kunepolyester, kwaye ilula ngama-40% kunefayibha yeviscose. Ke ngoko, ifanelekile kakhulu ukusetyenziswa njengesizalisi sempahla yasebusika okanye njengelaphu lokuskiya, ukunyuka intaba, kunye nezinye iimpahla.
(2) Amandla aphezulu, ukuthamba okuhle, ukumelana nokuguguleka, kunye nokumelana nokugqwala
I-Polypropylene inamandla aphezulu (iyafana nakwiimeko ezomileyo nezimanzi) kwaye iyinto efanelekileyo yokwenza iminatha yokuloba kunye neentambo; Ukumelana nokuguguleka okuhle kunye nokuqina, okufana ngamandla e-polyester kunye ne-nylon, kunye nesantya sokubuyela esifana ne-nylon kunye noboya, ephezulu kakhulu kuneefayibha ze-polyester kunye ne-viscose; I-Polypropylene izinzile kancinci, ithambekele ekuqhekekeni nasekuguqulweni, ayixhathisi kwiintsholongwane, kwaye ayibangeli monakalo; Ukumelana neekhemikhali kungaphezulu kuneefayibha eziqhelekileyo.
(3) Ineempawu zokuthintela ubushushu kunye nokugcina ubushushu
I-polypropylene fiber ine-resistivity ephezulu yombane (7 × 10 Ω. cm) kwaye i-thermal conductivity iphantsi. Xa ithelekiswa nezinye ii-chemical fibers, i-polypropylene fiber ine-insulation engcono kakhulu yombane kunye nokugcina ubushushu, kodwa ithambekele ekuveliseni umbane ongashukumiyo ngexesha lokucubungula.
(4) Ukusebenza kakubi kobushushu kunye nokumelana nokwaluphala
Iifayibha zePolypropylene zinendawo yokunyibilika ephantsi (165-173 ℃) kwaye azizinzanga ekukhanyeni nasekufudumaleni. Ngenxa yoko, iifayibha zePolypropylene azizinzanga ekufudumaleni, azikwazi ukuguga, kwaye azikwazi uku-ayina. Nangona kunjalo, ipropati yokulwa nokuguga ingaphuculwa ngokongeza i-arhente yokulwa nokuguga ngexesha lokujikeleza.
(5) Ukufunxwa komswakama okungalunganga kunye neempawu zokudaya
Iipropati zokufunxa umswakama kunye nokudaya zeefayibha zepolypropylene zezona zimbi kakhulu phakathi kweefayibha zeekhemikhali, phantse azifunxa umswakama kwaye izinga lokubuyisa umswakama lingaphantsi kwe-0.03%. I-polypropylene ethambileyo inefuthe elinamandla lokufunxa umswakama, kwaye umphunga wamanzi unokususwa ngee-capillaries kwiifayibha. Emva kokuba yenziwe impahla, intuthuzelo yempahla ingcono, ngakumbi ngeefayibha zepolypropylene ezicolekileyo kakhulu. Ngenxa yokwanda kommandla womphezulu, ukubila kunokudluliselwa ngokukhawuleza, kugcina ulusu lukhululekile. Ngenxa yokufunxa umswakama kunye nesantya esiphantsi sokuncitshiswa kweefayibha, amalaphu epolypropylene aneempawu zokuhlanjwa lula nokomiswa ngokukhawuleza.
I-Polypropylene ayinazo iimpawu zokudaya kakuhle, imibala ekhanyayo, kwaye ayikhawulezi ukudaya. Amafutha aqhelekileyo awakwazi ukuyidaya, kwaye uninzi lweefayibha ze-polypropylene ezinemibala zenziwa ngokudaya kwangaphambili. Umbala wezinto eziluhlaza kunye nokuguqulwa kwefayibha kunokusetyenziswa, kwaye ii-agents ze-fuel complexing zinokuxutywa ngaphambi kokuyinyibilikisa.