Okwepulasitiki-okujwayelekile ngaphandle kwezinqamuleli zomlilo ezingeziwe,{1}}izikulufu ezijwayelekile ezijwayelekile zingasetshenziswa; mane ukhethe ububanzi obufanele ngokusekelwe ku-viscosity encibilikayo. Kodwa-ke, kumapulasitiki anezakhiwo ezikhethekile, imikhiqizo ekhethekile, noma amapulasitiki anezimo ezikhethekile ze-granule, izikulufa ezikhethekile kufanele zisetshenziswe. -Izikulufu zenhloso ezijwayelekile zingaphansi kunezikulufu ezikhethekile ngokuya ngokwenziwa kwepulasitiki kanye nokusetshenziswa kwamandla epulasitiki ethile. Ngezansi kunesingeniso esiningiliziwe sezikulufu ezikhethekile ezenzelwe imikhiqizo nezidingo ezikhethekile.
I-PC Specialized Screw: I-PC iyipulasitiki-ebonakalayo, engeyona{1}}i-crystalline engagelezi kahle. Ijwayele ukuwohloka ngaphansi kokushisisa isikhathi eside, inetorque ephezulu yokudla, inzima ukuncibilika, futhi ijwayele ukuvimbeka. Idinga izinga lokushisa eliphezulu lempahla kanye{4}}nomjovo wokucindezela okuphezulu, inobubanzi obuncane bokulawula izinga lokushisa, futhi ukucutshungulwa kwayo akukuhle njenge-PMMA.
Isikulufu senziwe ngensimbi ephezulu{0}}ye-alloy engenisiwe enokwelashwa okuqinile okugcwele, ukumelana ngempumelelo ne-torque ephezulu nomthelela{1}}wokucindezela okuphezulu. Ayigugi-iyamelana, inendawo ene-electroplated ukuze imelane nokugqwala, futhi ibushelelezi,{4}}engenazimbobo ukuze kwehliswe ukunamathela nokuwohloka kwendawo. Isakhiwo esinemininingwane sicutshungulwa ngokucophelela ukuze kuvinjelwe ngokuphumelelayo ukuqoqwa kweglue. Ihlanganisa{7}}idizayini yokugunda okuphansi kanye nokukhiqiza ukushisa okuphansi. Ngokuvamile, amadayamitha amancane kuya kwamaphakathi asetshenziswa, futhi isebenza kahle ekubumbeni i-PCABS+PCPP-R kanye ne-flame{11}}i-ABS engemuva. Ingakwazi futhi ukubumba amapulasitiki avamile kanye nemikhiqizo evamile ye-PMMA, kodwa umphumela wokuxuba umbala umbi kakhulu. Uma impushana yombala yengezwa kupulasitiki,{14}}umbala oqinisiwe owenziwe ngokwezifiso{15}}udingeka isikulufu.
Ukuze uthole ukubumba okunembe kakhulu-okuncane okunemba embonini, sinikeza ukuncishiswa kobubanzi besikulufu nokunciphisa ubude, ukukhuphuka komfutho womjovo ube ngaphezu kuka-3000 kgf/cm, kanye nokuguqulwa kokuthuthela phambili kweyunithi yomjovo (ingabuyiselwa esimweni sayo sangempela ngemva kokulungiswa).
I-PMMA-isikulufu esithile: I-PMMA iyipulasitiki-engeyona i-viscosity ephezulu{2}}engeyona{2}}ikristalu enezici eziqinile neziqinile, i-torque ephezulu yokuphakelayo, ukuncibilika okunzima, ukuvaleka okulula, ukuzwela kwe-shear, kanye nokuwohloka kalula. Inokugeleza okubuthakathaka kancane futhi idinga izinga lokushisa eliphezulu lempahla kanye nomjovo wengcindezi ephezulu. Inobubanzi obubanzi bokulungiswa kwezinga lokushisa kanye nokucutshungulwa okuhle.
I-CP kanye ne-CA acidic screw assemblies: Uma kucatshangelwa isimo sokugqwala okukhulu kwamapulasitiki ane-asidi njenge-CP ne-CA, isikulufu, umphongolo oncibilikayo, nezinye izingxenye zepulasitiki ziklanywe ngokukhethekile ngokwesakhiwo nokwelashwa kwendawo. I-screw assembly inokumelana nokugqwala okuhle. Kunconywa ukusebenzisa umgqomo we-bimetallic ukumelana nokugqwala.
I-PVC-izikulufu ezithize. Ipulasitiki ye-PVC ingahlukaniswa ibe amafomu e-granular kanye ne-powder. Izwela kakhulu ekushiseni futhi ibola kalula, ine-viscosity ephezulu kanye nokugqwala okuqinile. Idizayini yesikulufu inezici ezimbili: indawo engaphezulu kufanele ibe yi-chrome{4}}ecwecwe; futhi azikho izindandatho zesihlukanisi noma izihlukanisi.
