Aliphatic Polyurethane Prepolymers PrepolymersSawv cev rau cov qeb tseem ceeb nyob hauv tsev neeg polyurethane, muab cov txiaj ntsig tshwj xeeb ua rau cov ntsiab lus ntawm kev ua kom ruaj khov, kev ua kom zoo nkauj, thiab cov kev tiv thaiv ib puag ncig. Piv nrog cov ntxhiab tsw qab, aliphatic polyurethanes nthuav tawm cov xim zoo nkauj, thiab lub neej kev pabcuam ntev hauv kev xav tau tshav ntuj, cua sov, lossis noo noo. Tsis pub dhau cov qeb no, ob txoj koob tshiab no tuaj yeem txheeb tau: Lub LFH aliphatic prepolymers thiab Lw Aliphatic Preporacers, txhua tus muaj nws tus kheej kev ua tau zoo thiab thaj chaw ntawm daim ntawv thov.
Lub Lfh Aliphaatic Prepolymer series muab cov khoom siv tau zoo tshaj plaws uas yog cov aliphatic elastomers. Cov kev npaj ua ntej no yog tsim siv HDI (Hoxamethylene Diisocyanate) Raws li LF qis - dawb cov qib ntawm residual HDI monomers. Qhov tsawg - Kev siv tshuab dawb tsuas yog ua rau muaj kev phom sij uas lawv tau ua haujlwm tau zoo vim tias lub siab vapor siab ntawm cov hiam siab. Raws li qhov tshwm sim, LFH cov khoom ua haujlwm pabcuam ua cov khoom hauv paus zoo heev rau ob qho tib si cam khwb cia elastomers thiab siab {{}} Perform ua txheej txheej.
Lub Lw Aliphaatic Prepolymer Series yog lwm qhov kev tsim kho uas tsom mus rau txheej txheem txheej txheem thiab ntev {}} lub sij hawm kev ua haujlwm. Cov kev npaj ua ntej no yog tsiag ntawv los ntawm lawv cov khoom siv ntev ntev, muab cov ntaub ntawv tso tawm lub neej, muab cov ntaub ntawv tsim khoom thiab cov chaw tsim khoom siv tau yooj yim thaum cov txheej txheem sib xyaw, lossis txheej txheem txheej txheem. Ntxiv nrog rau UV tsis kam, LW cov precolymers kuj tseem ua rau pom muaj kev cuam tshuam hydrolysis tsis txaus ntseeg, txawm tias nyob ntawm ntug dej kub. Qhov kev sib xyaw ua ke ntawm cov tshuab LW tswj lawv txoj kev ncaj ncees thiab kev ua si txawv teb chaws nyob rau hauv phem {4 4}}}}} siv nyob rau ib puag ncig.
Los ntawm daim ntawv thov kev pom zoo, ib aliphatic polyurethane Prepolershane Prepenized rau lawv lub luag haujlwm hauv cov txheej txheem hlau thiab kev tiv thaiv cov txheej txheem hlau. Lawv lub peev xwm los tawm tsam daj, tuav cov kab ke sab nraud, thiab tiv thaiv sab nraum zoov sab nraud ua rau lawv muaj kev lag luam tawm tsam rau kev lag luam uas xav tau ob qho tib si kev thov kom zoo nkauj thiab kev ua haujlwm ntev. Piv txwv li, lawv feem ntau siv nyob rau hauv cov cuab yeej siv lub tsho loj, kho tsheb thiab cov txheej txheem thauj mus los kom tiav, thiab cov txheej txheem tiv thaiv rau cov qauv tsim duab kos duab thiab nag. Ib qho ntxiv, vim yog lawv cov kev ruaj khov zoo dua, cov prepolymers tau raug qhia hauv marine txheej thiab sab nraum zoov elastomer daim ntawv thov, qhov chaw dej tsis taus, qhov chaw dej tsis taus thiab kev pabcuam dej nraum zoov tsis tseem ceeb.
