1.Hydroxyl tus nqi
Tus nqi ntawm hydroxyl (-OH) muaj nyob rau hauv 1 gram ntawm polymer polyol yog sib npaug rau cov milligrams ntawm KOH, hauv mgKOH/G.
2. sib npaug
Qhov nruab nrab molecular hnyav ntawm ib pawg ua haujlwm.
3.Isocyanate cov ntsiab lus
Cov ntsiab lus ntawm isocyanate hauv cov molecule
4.Isocyanate index
Qhia txog qib ntawm ntau tshaj isocyanate hauv cov qauv polyurethane, feem ntau qhia los ntawm tsab ntawv R.
5.Chain extender
Nws yog hais txog cov dej cawv uas tsis muaj molecular thiab amine tebchaw uas tuaj yeem txuas ntxiv, nthuav dav, lossis tsim spatial reticular crosslinking ntawm molecular chains.
6. Ntu nyuaj
Cov saw ntu tsim los ntawm cov tshuaj tiv thaiv ntawm isocyanates, cov saw txuas ntxiv, thiab cov kab sib txuas sib txuas ntawm cov saw tseem ceeb ntawm polyurethane molecules muaj kev sib koom ua ke loj, qhov loj ntawm qhov ntim, thiab loj rigidity.
7.Soft seem
Cov pa roj carbon-carbon backbone polymer polyol muaj qhov muag muag zoo thiab yog ib ntu hloov tau yooj yim hauv cov pob txha polyurethane.
8.Ib -kab ruam txoj kev
Hais txog cov txheej txheem ntawm kev sib xyaw oligomer polyols, diisocyanates, saw extenders thiab catalysts tib lub sijhawm thiab txhaj ncaj qha rau hauv pwm los kho thiab tsim ntawm qee qhov kub.
9.Prepolerization txoj kev
Ua ntej, oligomer polyol thiab diisocyanate yog prepolerized los tsim ib lub polyurethane prepoler nrog lub davhlau ya nyob twg NCO pawg. Thaum pouring, lub prepoler yog reacted nrog ib tug saw extender los npaj ib tug polyurethane elastomer. Txoj kev hu ua prepolerization method.
10.Semi- txoj kev prepolerization
Qhov txawv ntawm txoj kev semi-prepolerization thiab txoj kev prepolerization yog ib feem ntawm polyester polyol los yog polyether polyol yog ntxiv rau prepoler nyob rau hauv daim ntawv ntawm ib tug sib tov nrog ib tug saw extender, catalyst, thiab lwm yam.
11.Reactive txhaj tshuaj molding
Kuj hu ua Reaction Txhaj Moulding RIM (Reaction Txhaj Moulding), nws yog txheej txheem uas oligomers me me molecular hnyav ntsuas hauv cov kua, sib tov tam sim thiab txhaj rau hauv pwm tib lub sijhawm, thiab hnov mob sai hauv pwm kab noj hniav, qhov hnyav molecular ntawm cov khoom nce nrawm, thiab cov khoom lag luam tshiab polymer uas muaj cov qauv nrawm nrawm. Polymer txheej txheem.
12.Foaming index
Ntawd yog, tus naj npawb ntawm cov dej sib npaug rau 100 feem ntawm polyether yog txhais tau tias yog foaming index (IF).
13.Foaming cov tshuaj tiv thaiv
Feem ntau yog hais txog cov tshuaj tiv thaiv qhov twg dej reacts nrog isocyanate los hloov urea thiab tso CO2.
14.Gel tshuaj tiv thaiv
Feem ntau hais txog kev tsim cov tshuaj tiv thaiv carbamate.
15.Gel sij hawm
Nyob rau hauv tej yam kev mob, lub sij hawm nws yuav siv sij hawm rau cov kua tshuaj los ua ib tug gel.