Si loo dhimo qiimaha badeecada loona helo waxqabad dheeri ah,poliurethane thermoplasticelastomers waxa loo isticmaali karaa sida caadiga ah loo isticmaalo maaddooyinka adkaynaya si loo adkeeyo heerkulbeegyo kala duwan iyo agab caag la beddelay.
Sababo la xiriirapolyurethaneisagoo ah polymer polar aadka u sarreeya, waxay la jaan qaadi kartaa resins polar ama caag, sida marka lagu daro koloriin polyetylen (CPE) si loo soo saaro alaabada caafimaadka; Isku darka ABS waxay bedeli kartaa isticmaalka balaastikada thermoplastic injineernimada; Marka lagu daro polycarbonate (PC), waxay leedahay sifooyin ay ka mid yihiin caabbinta saliidda, caabbinta shidaalka, iyo caabbinta saameynta, waxaana loo isticmaali karaa in lagu sameeyo meydka baabuurta; Isku-dhafka polyester-ka wuxuu hagaajin karaa waxqabadkiisa adag; Intaa waxaa dheer, waxay si fiican ula socon kartaa chloride polyvinyl, polyoxymethylene (POM), ama chloride polyvinylidene; Polyester polyurethane wuxuu si fiican ula socon karaa 15% caag nitrile ah ama 40% caag nitrile ah / caag isku darka polyvinyl chloride; Polyether polyurethane sidoo kale waxay si fiican ula socon kartaa 40% caag nitrile ah / koollada isku dhafka ah ee polyvinyl; Waxa kale oo ay la jaan qaadi kartaa acrylonitrile styrene (SAN) copolymers; Waxa ay samayn kartaa qaab-dhismeedka shabakad isku xidhan (IPN) oo leh polysiloxanes fal-celin ah. Inta badan xabagyada isku dhafan ee kor lagu soo sheegay ayaa durba si rasmi ah loo soo saaray.
Sanadihii la soo dhaafay, waxaa jiray tiro sii kordheysa oo cilmi baaris ah oo ku saabsan xoojinta POM byTPUShiinaha. Isku darka TPU iyo POM ma aha oo kaliya inay hagaajiyaan iska caabbinta heerkulka sare iyo sifooyinka farsamada ee TPU, laakiin sidoo kale waxay si weyn u adkeyneysaa POM. Cilmi-baadhayaasha qaarkood waxay muujiyeen in tijaabooyinka jabka jilicsan, marka la barbardhigo POM matrix, POM alloys oo leh TPU-da oo lagu daro kala-guurka jabka jaban ilaa jabka ductile. Ku darida TPU waxay sidoo kale ku siinaysaa POM waxqabadka xusuusta qaabka. Gobolka crystalline ee POM wuxuu u adeegaa sida marxaladda go'an ee qaabka xusuusta qaabka, halka gobolka amorphous ee TPU iyo POM ay u adeegto marxaladda dib loo celin karo. Marka heerkulka jawaabta soo kabashada uu yahay 165 ℃ iyo wakhtiga soo kabashada waa 120 s, heerka soo kabashada ee daawaha wuxuu gaaraa in ka badan 95%, saameynta soo kabashada ayaa ah tan ugu fiican.
TPU way adagtahay in ay la jaanqaado qalabka polymer-ka ee aan polarka ahayn sida polyetylen, polypropylene, caag ethylene propylene, caag butadiene, caag isoprene, ama budada caagga ah, mana soo saari karto walxo isku dhafan oo leh waxqabad wanaagsan. Sidaa darteed, hababka daawaynta dusha sare sida balasmaha, dheecaanka corona, chemistry qoyan, primer, olol, ama gaasas fal-celin ah ayaa inta badan loo isticmaalaa kuwa dambe. Tusaale ahaan, alaabada hawada Maraykanka iyo shirkadaha kiimikaad waxay si weyn u wanaajin karaan moduleska foorarsiga, xoogga xajinta, iyo xidhashada caabbinta budada ganaaxa ee miisaanka molecular ultra-high molecular oo leh miisaan kelli ah 3-5 milyan ka dib F2/O2 daawaynta dusha sare ee gaaska, iyo ku darida elastomers polyurethane ee saamiga 10%. Waxaa intaa dheer, F2/O2 daawaynta dusha sare ee gaaska firfircoon ayaa lagu dabaqi karaa fiilooyinka gaaban ee dhererka leh ee dhererkoodu yahay 6-35mm ee kor ku xusan, kaas oo hagaajin kara qallafsanaanta iyo jeexjeexyada walxaha isku dhafan.
Waqtiga boostada: Jan-19-2024