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“Ukuqina” kubhekisela enanini lamandla adingekayo ukuze kuguqulwe iyunithi yento; “Ukuguquguquka” kubhekisela enanini lokuguquguquka kwento ngaphansi kwamandla eyunithi. Uma “ukuqina” kukhulu, kungenzeka ukuthi kuguquke kancane; lapho “ukuguquguquka” kukhulu, kulapho kuthambekele khona ekuguqukeni. Izinto ezinokuqina okuhle zithambile, futhi ukunwebeka kokuqina lapho kuphuka futhi kunamandla okushaya kukhulu, kuyilapho ubulukhuni, amandla okuqina kanye ne-modulus yokuqina yokuqina kuncane.
Njengoba kungabonakala encazelweni engenhla, ukuqina nokuqina kuyaphikisana, kodwa kumapulasitiki aguquliwe ayancintisana. Isibonelo, lapho amapulasitiki aqiniswe nge-fiberglass eba lukhuni kakhulu, kokubili amandla okubamba kanye namandla okushaya kunganda.
Indlela yokuthuthukisa ukuqina kwepulasitiki?
Kutholakale ukuthi ukwandisa ukuqina kwe-matrix resin kungathuthukisa umphumela wokuqina kwamapulasitiki aqinile.
Kunezindlela eziningi zokuqinisa, njengokwandisa isisindo sama-molecule se-matrix resin ukuze kuncishiswe ukusatshalaliswa kwesisindo sama-molecule, noma ukulawula ukwakheka kwama-crystal, ukwakheka kwama-crystal, usayizi wama-crystal kanye nesimo sama-crystal ukuze kuthuthukiswe ukuqina okuphezulu.
Ungahlukanisa kanjani i-ejenti yokuqinisa esetshenziswa kakhulu epulasitiki?
• I-elastomer yerabha eqinile
I-EPR (i-ethylene-propylene enama-binary), i-EPDM (EPDM), irabha ye-butadiene (BR), irabha yemvelo (NR), irabha ye-isobutene (IBR), irabha ye-nitrile (NBR), njll. Ifanele zonke izinguquko zokuqinisa i-resin yepulasitiki;
• Ama-elastomer e-thermoplastic aqinile
I-SBS, i-SEBS, i-POE, i-TPO, i-TPV, njll. Ukuze kuqiniswe i-polyolefin noma i-non-polar resin, ukuze kuqiniswe i-polyester, i-polyamide namanye ama-polymer aqukethe amaqembu asebenzayo e-polar, ukuqinisa kudinga ukwengeza ama-compatibilizer;
• I-copolymer yegobolondo eliyinhloko eliqinile kanye ne-terpolymer ephendulayo
I-ACR (i-acrylate), i-MBS (i-methyl acrylate-butadiene-styrene copolymer), i-PTW (i-ethylene-butyl acrylate-glycidyl methacrylate copolymer), i-E-MA-GMA (i-ethylene-methyl acrylate-glycidyl methacrylate copolymer), njll. Isetshenziselwa ubunjiniyela bepulasitiki kanye nokuqina kwe-polymer alloy engamelana nokushisa okuphezulu;
• Kuqiniswa ngokuxuba amapulasitiki aqinile kakhulu
I-PP/PA, i-PP/ABS, i-PA/ABS, ama-HIPS/PPO, i-PPS/PA, i-PC/ABS, i-PC/PBT, njll. Ubuchwepheshe be-polymer alloy buyindlela ebalulekile yokulungiselelaamapulasitiki obunjiniyela obuqinile kakhulu.
• Ezinye izindlela zokuqinisa
Ukuqinisa izinhlayiya ezincane (njenge-nano-cacO3), ukuqinisa i-sarin resin (i-Dupont metal ionomer), njll.
Okuqukethwe
Njengoba eseneminyaka ecishe ibe ngu-20 embonini yemishini yokukhipha izinto ezihlakaniphile, ubelokhu ephethe izindima ezibalulekile eJwell Machinery, okuhlanganisa noMphathi Jikelele kanye noSihlalo Ojikelezayo. Kusukela ngo-2024, uphathe izinkampani eziningi ezingaphansi kwakhe, eqhuba ukwanda kwebhizinisi kanye nokuthuthukiswa kwezimboni, ngenkathi ehola ukusungula izinto ezintsha ekukhiqizeni izinto ezihlakaniphile kanye nokukhula komhlaba wonke.
