Umlinganiselo wePolyol kunye ne-isocyanate:

I-Polyol inexabiso eliphezulu le-hydroxyl kunye nobunzima obukhulu be-molecular, nto leyo eya kunyusa uxinano lwe-crosslinking kwaye incede ekuphuculeni uxinano lwe-foam. Ukulungisa i-isocyanate index, oko kukuthi, umlinganiselo we-molar we-isocyanate kwi-hydrogen esebenzayo kwi-polyol, kuya kunyusa izinga lokudibanisa kwaye kwandise uxinano. Ngokubanzi, i-isocyanate index iphakathi kwe-1.0-1.2.

 

Ukukhethwa kunye nomthamo wearhente yokwenza amagwebu:

Uhlobo kunye nomthamo wearhente ekhupha igwebu uchaphazela ngokuthe ngqo izinga lokwanda komoya kunye noxinano lwamaqamza emva kokukhupha igwebu, uze emva koko uchaphazele ubukhulu bomphezulu. Ukunciphisa umthamo wearhente ekhupha igwebu ngokwasemzimbeni kunokunciphisa ukuxinana kwegwebu kwaye kwandise uxinano. Umzekelo, amanzi, njengearhente ekhupha igwebu ngokwekhemikhali, asabela kunye ne-isocyanate ukuvelisa i-carbon dioxide. Ukwandisa ubungakanani bamanzi kuya kunciphisa uxinano lwegwebu, kwaye ubungakanani bawo bokongeza kufuneka bulawulwe ngokungqongqo.

 

Ubungakanani be-catalyst:

I-catalyst kufuneka iqinisekise ukuba i-foam reaction kunye ne-gel reaction kwinkqubo ye-foam ifikelela kwi-dynamic balance, kungenjalo i-bubble fall okanye i-shrinkage iya kwenzeka. Ngokudibanisa i-alkaline tertiary amine compound ene-alkaline enamandla ene-catalytic effect enamandla kwi-foam reaction kunye ne-catalytic effect enamandla kwi-gel reaction, i-catalyst efanelekileyo kwinkqubo ye-self-skinning inokufunyanwa.

 

Ulawulo lobushushu:

Ubushushu bomngundo: Ubukhulu bolusu buya kwanda njengoko ubushushu bomngundo buncipha. Ukunyusa ubushushu bomngundo kuya kukhawulezisa izinga lokusabela, nto leyo enceda ekwakheni isakhiwo esixineneyo, ngaloo ndlela kwandisa uxinano, kodwa ubushushu obuphezulu kakhulu bunokubangela ukuba impendulo ingalawuleki. Ngokubanzi, ubushushu bomngundo bulawulwa kwi-40-80℃.

 

Ubushushu bokuvuthwa:

Ukulawula ubushushu bokwaluphala ukuya kwi-30-60℃ kunye nexesha ukuya kwi-30s-7min kunokufumana ibhalansi efanelekileyo phakathi kwamandla okususa kunye nokusebenza kakuhle kwemveliso.

 

Ulawulo loxinzelelo:

Ukunyusa uxinzelelo ngexesha lenkqubo yokufutha kunokuthintela ukwanda kwamaqamza, kwenze ulwakhiwo lwefoam lube ncinci ngakumbi, kwaye konyuse uxinano. Nangona kunjalo, uxinzelelo olugqithisileyo luya kunyusa iimfuno zesikhunta kwaye lonyuse iindleko.

 

Isantya sokuxukuxa:

Ukwandisa isantya sokuxukuxa ngokuchanekileyo kunokwenza izinto eziluhlaza zixubane ngokulinganayo, zenze ukusabela ngokupheleleyo, kwaye zincede ekwandiseni uxinano. Nangona kunjalo, isantya sokuxukuxa esikhawulezayo siya kungenisa umoya omninzi, nto leyo ebangela ukwehla koxinano, kwaye ngokubanzi ilawulwa kwi-1000-5000 rpm.

 

I-coefficient yokuzalisa ngaphezulu:

Ubungakanani bokujova komxube wempendulo yemveliso yokuzikhuhla kufuneka bube bukhulu kakhulu kunobungakanani bokujova kwe-free foam. Ngokuxhomekeke kwimveliso nakwinkqubo yezinto, i-coefficient yokuzalisa ngaphezulu iqhele ukuba yi-50%-100% ukugcina uxinzelelo oluphezulu lwesikhunta, nto leyo enceda ekunyibilikeni kwe-agent efuthayo kumaleko wesikhumba.

 

Ixesha lokulinganisa umaleko wolusu:

Emva kokuba i-polyurethane enegwebu igalelwe kwimodeli, okukhona umphezulu ulingana ixesha elide, kokukhona ulusu luba lutyebile. Ulawulo olufanelekileyo lwexesha lokulinganisa emva kokugalela lukwayenye yeendlela zokulawula ubukhulu bolusu.