Txoj kev ua
CPU: Nws yog cov khoom siv reasive. Nws yog kho thiab tsim los ntawm cov tshuaj lom neeg ntawm cov prepolymer thiab cov saw txuas lossis crosslinking tus neeg sawv cev nyob rau hauv qee qhov kev mob los ua ib tug peb- qhov chaw mesh. Feem ntau, pouring cov txheej txheem yog siv, xws li phau ntawv pinging, tshuab pouring, thiab lwm yam.
TPU: Nws yog cov khoom siv thermoplastic uas tau softened thiab ntws los ntawm cua sov, thiab tom qab ntawd txias thiab puab. Nws tuaj yeem ua tiav los ntawm kev txhaj tshuaj molding, extrusion, tshuab moulding thiab lwm cov thermoplastics.
Molecular qauv qauv
CPU: Nws muaj cov pab pawg ua haujlwm. Thaum lub sij hawm kho tus txheej txheem, cov pab pawg ua haujlwm no muaj kev sib txuam los ua ib qho kev sib tw mesh, thiab muaj ib qho kev sib tw messsal, thiab muaj ib qho kev sib tw messional, thiab muaj ib qho kev ua kom muaj zog ntawm molecular.
TPU: cov molecular chains yog feem ntau lub cev crosslinked. Ib lub kob zoo sib xws yog tsim los ntawm micro -}} theem sib cais ntawm cov tawv thiab ntu muag. Thaum rhuab, lub cev crosslinking yog rhuav tshem, cov khoom siv los ua mos thiab ntws, thiab lub xeev crosslinking xeev tau rov qab los tom qab txias.
Cov yam ntxwv ua tau zoo
CPU: Lub hardness ntau ntau yog dav, thiab cov kev ua tsis kam thiab cov tshuab ua tau zoo, tab sis kev ua haujlwm thev naus laus zis yog qhov nyuaj thiab tsis yooj yim rau kev rov ua haujlwm.
TPU: Nws muaj kev hloov pauv tau zoo, elasticity, txias kuj thiab ua kom muaj fluidity. Cov khib nyiab tuaj yeem siv rov ua dua tshiab thiab rov ua dua tshiab, tab sis cov kub ua kom tsis kam thiab cov kuab tiv thaiv kuj tsis zoo.
Molecular muaj pes tsawg leeg
Same
Nws yog tsim los ntawm cov tshuaj tiv thaiv ntawm ortocyanates (xws li diphenyrance diisocyanate tdi, thiab lwm yam) thiab lwm yam) los ua ib tus prepolymer. Cov molecular chart ntawm cov prepolymer muaj cov kev tsis raug yog ecyananate pawg (- NCO). Thaum lub sij hawm molding txheej txheem, cov pab pawg Isocyanate pab cuam tshuam nrog cov saw txuas ntxiv (xws li cov diols (cov kab ke, thiab lwm yam ntawm cov qauv sib txuas.
Tpu
It is usually formed by the reaction of diisocyanates (such as MDI, TDI, etc.), short-chain diols (chain extenders) and long-chain diols (polyethers or polyester polyols).Among them, long-chain diols form soft segments, which give the material flexibility and Elasticity, thiab Diisocyanates thiab luv- saw diols thiab hardness thiab hardness thiab hardness thiab hardness thiab cov khoom siv muag muag yog teem ib sab.