I-UHMWPE, ekwabizwa ngokuba yi-high-high-modulus polyethylene, ngoku yenye yezinto ezisebenza kakhulu kwihlabathi.Ngenxa yeepropathi zayo ezigqwesileyo ezigqwesileyo ezinje ngokumelana nomhlwa, ukuxhathisa ukunxiba kunye noxinzelelo oluphantsi, okwangoku isetyenziswa kwizinto zokhuselo lomkhosi, izixhobo zomkhosi, izixhobo ze-aerospace kunye namanye amacandelo omkhosi.
I-UHMWPE, ekwabizwa ngokuba yi-high-high-modulus polyethylene, ngoku yenye yezinto ezisebenza kakhulu kwihlabathi.Ngenxa yeepropathi zayo ezigqwesileyo ezigqwesileyo ezinje ngokumelana nomhlwa, ukuxhathisa ukunxiba kunye noxinzelelo oluphantsi, okwangoku isetyenziswa kwizinto zokhuselo lomkhosi, izixhobo zomkhosi, izixhobo ze-aerospace kunye namanye amacandelo omkhosi.Ukuphuhliswa kwefiber ephezulu yokusebenza sisiseko sezixhobo zomkhosi welizwe, kwaye izinto ezihambele phambili zinokukhokelela kubuchwephesha bezomkhosi obuphambili, obuye baba sisiseko esibalulekileyo sokwakhiwa kwelizwe lanamhlanje elinamandla, kwaye lithatha indawo eqinisekileyo. intsimi yezinto zomkhosi ehlabathini lonke.
- Iipropati ze-UHMWPE fiber
Ifayibha ye-UHMWPE ineempawu ezibalaseleyo ezibanzi, ukuxinana kwayo kuncinci, inokudada emanzini.KwayeUHMWPE ifayibhayeyona fiber inamandla ehlabathini ngoku.Xa kuthelekiswa nentsimbi, ifayibha ye-UHMWPE yomelele ngokuphindwe kalishumi kunentsimbi ekumgangatho ophezulu.Ukongeza, ifayibha ye-UHMWPE ikwanazo noxhathiso oluqinileyo lwe-corrosion, ukumelana neekhemikhali, ukumelana nokunxiba kunye nezinye iipropathi, ukusebenza okubanzi, ifayibha ye-UHMWPE kwiinkalo ezininzi ezibalulekileyo e-China zidlala indima ebalulekileyo.
1.1 Iipropati ezigqwesileyo zoomatshini
Xa kuthelekiswa nezinye iintsinga ezisebenza kakhulu, i-UHMWPE i-fiber density yeyesibini kuphela kwifiber ye-PE yesiqhelo kunye ne-polypropylene fiber, kwaye iyona nto ifanelekileyo yefiber kunye noxinano oluncinci phakathi kwezixhobo ze-bulletproof.Inokunciphisa ubunzima bezinto eziphathekayo kwaye ifezekise isiphumo esilula ngelixa iqinisekisa ukusebenza okungcono kwe-bulletproof.
Xa kuthelekiswa nezinye iipropati, amandla e-tensile ye-UHMWPE kuphela okwesibini kwi-PBO kunye ne-polyaryl ester fiber, kwaye i-0.1 kuphela eyahlukileyo kwi-polyaryl ester fiber.Inokubonwa ukuba i-UHMWPE inamandla abalaseleyo okuqina.
Xa kuthelekiswa nezinye iintsinga, imodyuli yokuqala ikwisibini kuphela kwi-PBO kunye ne-carbon fiber, ebonisa ukuba ifayibha inokumelana kakuhle nokonakaliswa koxinzelelo kwaye ayithandeki kwi-deformation.Luhlobo lwefiber yeempawu ezinamandla akhethekileyo aphezulu kunye nemodyuli ethile, edlala indima ebalulekileyo kwizinto ezingangenwa bullet.
1.2 Ukusebenza kokufakelwa kombane
I-UHMWPE i-fiber reflectance radar wave phenomenon imbalwa kakhulu, inokuqhuba kakuhle kakhulu, iphucula idielectric engaguqukiyo yezinto ezidibeneyo.Nangona i-dielectric engaguqukiyo kunye nexabiso lelahleko le-polyethylene lincinci phakathi kwezinye izinto, ifayibha ye-UHMWPE inomsebenzi ongenakufikelela kwifiber ye-polyethylene, kwaye inesiphumo esingcono kunemathiriyeli jikelele, ngoko ke yeyona nto ikhethwayo kwiradome yerada, kunye umgangatho ophezulu kunye nesiphumo sokukhanya.
1. 3 Ukumelana nemozulu kunye nokumelana nokunxiba
Ifayibha ye-UHMWPE inokumelana nemozulu ebalaseleyo kwaye inokugcina ukusebenza okuphezulu koqobo kungatshintshwanga emva kwexesha elide lokukhanya kunye nokusingqongileyo okurhabaxa.Kwangaxeshanye, ifayibha ye-UHMWPE inokumelana nokunxiba okuphezulu kunye nokugoba ukudinwa kunefayibha ye-aramid kwizinto zokusebenza eziphezulu, ngoko ke ukuxhathisa kokunxiba kwale fayibha kungcono kunezinye iintsinga eziphezulu zokusebenza.Ngenxa yokunganyangeki kwayo okuphezulu kunye nokusebenza ngokulula kokulungiswa, inethuba elihle lokufaka isicelo kwintsimi yezoshishino.
1. 4 Ukumelana nokutyiwa kweekhemikhali
Ulwakhiwo lwangaphakathi lwefayibha ye-UHMWPE luqinile.Kungenxa ngokuchanekileyo ngenxa yekristali ephezulu kunye nokuqhelaniswa kwekhonkco lemolekyuli ngaphakathi kwefiber ukuba ifayibha ine-inertia eyomeleleyo yeekhemikhali.Ngoko ke, phantsi kwe-asidi kunye nesiseko sombuso okanye umgangatho ophezulu kunye nomgangatho ophantsi, i-fiber inokugcina ukusebenza kwayo kwasekuqaleni ingatshintshi ixesha elide, kwaye isalungelelanisa kwaye idlale ixabiso layo kwindawo enzima.
1. Iipropati ezi-5 zokuzithambisa
Izinto ze-UHMWPE xa zithelekiswa nezinye izinto zobunjineli, izinto ze-UHMWPE zineempembelelo eziphantsi kakhulu, i-friction factor ephantsi yenza ukuba ifayibha ngokwayo isebenze ngcono ngokuzithambisa, yeyona nto ilungileyo kwizixhobo zeplastiki phantsi kwemeko yokungathambisi, ngoko ke izinto ze-UHMWPE zisetyenziswa ngokubanzi. kubunjineli, ngexabiso eliphezulu kakhulu lokusetyenziswa.I-fiber ye-UHMWPE isetyenziselwa ukusebenza komatshini, xa kuthelekiswa nentsimbi yendabuko kunye nobhedu phantsi kokusebenza kwe-lubricant kungcono.Ke ngoko, xa kuthelekiswa nezinto eziqhelekileyo, ifayibha ye-UHMWPE ayigcini nje kuphela iindleko zempahla ekrwada, kodwa ikwaqinisekisa umphumo ogqwesileyo wokusebenza, ngoko inexabiso eliphezulu lokusetyenziswa.
2. Indlela yokulungiselela i-UHMWPE fiber
2.1 Indlela yokusonta ijeli
Kukho iindlela ezininzi zokulungisa i-fiber ye-UHMWPE ephezulu, kodwa ngenxa yesizathu sokunyibilika ngokwayo, ukulungiswa kwefayibha ye-UHMWPE ayinakufezekiswa.I-gel spinning yeyona ndlela ifanelekileyo.Indlela yokujikeleza ye-Gel yahlukile kwisisombululo esijikelezileyo sokujikeleza okanye ukujikeleza okumanzi, ngokubanzi kusetyenziswa iipolymers ezinobunzima bemolekyuli njengezinto eziluhlaza, ezenziwe ngesisombululo se-semi-dilute njenge-dope ejikelezayo, isisombululo se-molekyuli eguquguqukayo kwi-tangles kwisisombululo se-semi dilute, kwaye emva koko ukujikeleza, i-crystallization, ikhonkco eliphezulu lokwelula, emva konyango lokutsalwa ukuya kumaxesha ukolula kwe-thermal, eyenziwa ngamandla amakhulu kunye ne-high modulus fibers.Indlela yokusonta ijeli inezi mpawu zisisiseko zilandelayo: (1) i-polymer yobunzima bemolekyuli ephezulu kakhulu isetyenziswa njengemathiriyeli ekrwada;(2) sebenzisa isisombululo sesemi-dilute njengesitokhwe sokusonta;(3) ukolulwa kwe-hyperthermal kwenziwa, kwaye umlinganiselo we-tensile wawungaphezulu kwe-30.
2.2 Indlela yokusonta yeplastiki yokunyibilika
I-Melt spinning yenziwe nge-polymer enyibilikayo ngokujikeleza kunye nokukhupha.I-Plasticized melt spinning isekelwe kwisiseko sokunyibilika kokunyibilika, ukongeza isixa esifanelekileyo sokunyibilika kwipolymer enyibilikayo ukuze ijikelezwe, ngaphaya kwewele lesijivu esixutyiweyo sokunyibilikisa, emva koko sakhutshwa, sifakwe kwi-arhente yotsalo, emva koko ukolula okuphindaphindiweyo kunokufumana amandla aphezulu ekugqibeleni. kunye ne-modulus polyethylene fiber ephezulu.
2.3 Uxinzelelo oluphezulu lwendlela ye-solid state extrusion
Umgaqo wokwenziwa kwe-extrusion kukuba i-solvent ye-granular eqinile yongezwa kwi-extruder, i-barrel yezinto equkethe i-solvent eqinile ifudunyezwa kwiqondo lokushisa elinyibilikayo, ukwenzela ukuba izinto eziqinileyo zinyibilike, i-arhente etyhidiweyo ihanjiswe kwintloko yomatshini nge imilo esisigxina, kwaye emva kokupholisa kunye nokubumba, imveliso yokugqibela iyaqina.Uxinzelelo oluphezulu oluqinileyo indlela ye-extrusion isekelwe kwi-extrusion eyenza ukunyibilika koxinzelelo oluphezulu, ukwenza i-solvent, emva koko ngomngxuma we-jet, kwaye emva koko kuphezulu, kwaye ekugqibeleni ufumane ubunzima be-molecular polyethylene.
2.4 Indlela yokuqaqambisa umphezulu
Ngenxa yokucotha kwesantya sokukhula kwefibrous crystal, le ndlela ayifane isetyenziswe ekulungiseleleni i-UHMWPE fiber.
Ixesha lokuposa: Oct-14-2018