Umatshini we-polyurethane foaming sisixhobo esikhethekileyo sokufakela kunye nokukhupha amagwebu e-polyurethane.Logama nje icandelo le-polyurethane imathiriyeli ekrwada (icandelo le-isocyanate kunye necandelo le-polyether polyol) izibonisi zokusebenza ziyahlangabezana neemfuno zefomula.Iimveliso ze-foam ezifanayo kunye nezifanelekileyo zinokuveliswa ngomatshini we-polyurethane ophezulu kunye noxinzelelo oluphantsi.Yenziwe ngeplastiki enogwebu ngokwekhemikhali ephuma ugwebu lwepolyether polyol kunye ne-polyisocyanate kubukho bezongezo zekhemikhali ezahlukeneyo ezifana ne-ejenti yogwebu, i-catalyst kunye ne-emulsifier.
Imigqaliselo yokusebenza kweumatshini wepolyurethane ugwebu
1. Iumatshini wepolyurethane ugwebukufuneka banxibe iiglasi zokukhusela, iimpahla zokusebenza kunye neekepusi zokusebenza, kunye neeglavu zerabha xa usebenzisa i-polyurethane A kunye ne-B yokudibanisa imathiriyeli.Indawo ekusetyenzwa kuyo kufuneka ingene umoya kwaye icoceke.Xa ubushushu be-ambient buphezulu, i-agent ekhupha ugwebu kwi-polyurethane A iya kunyuka ngokuyinxenye kwaye ivelise uxinzelelo, ngoko ke i-exhaust cover kufuneka ivulwe kuqala ukukhulula uxinzelelo lwegesi, kwaye isivalo sombhobho kufuneka sivulwe.
2. Xa umatshini we-polyurethane we-foaming uneemfuno ze-flame retardant kwi-foam, umatshini we-polyurethane we-foaming unokusebenzisa i-additive flame retardant.Umlinganiselo wokongezwa kwe-flame retardant eqhelekileyo yi-15-20% yobunzima bezinto ezimhlophe, kunye ne-flame retardant yongezwa kwi-polyurethane A.Kufuneka ixutywe ngokulinganayo phambi kokuba igwebu.
3. Ngethuba lokusebenza kwe-foaming manual yomatshini we-polyurethane we-foaming, ulinganise ngokuchanekileyo izinto ezidibeneyo ze-polyurethane A kunye ne-B ngomlinganiselo kwaye uzigalele kwisitya ngexesha elifanayo.Emva kokuvuselela imizuzwana eyi-8 ukuya kwe-10 nge-stirrer engaphezu kwe-2000 rpm, uthele kwi-mold kunye ne-foam.Ixesha lokudiliza lixhomekeke kwiimfuno zemveliso, ubukhulu be-foam, njl.
4. Xa ulusu ludibana nezinto ezidibeneyo ze-polyurethane A, kufuneka zihlanjwe ngesepha kunye namanzi.Xa umatshini we-polyurethane we-foaming usebenza izinto ze-polyurethane B (kukho ukucaphuka okuthile), musa ukukhupha umphunga wayo kwaye ungawutshizi esikhumbeni namehlo.Xa kuziwa kwesikhumba kunye namehlo, kufuneka kusulwe ngekotoni yonyango ngokukhawuleza, emva koko ihlanjululwe ngamanzi amaninzi kwimizuzu eyi-15, kwaye ihlanjululwe ngesepha okanye utywala.
Ukuthenga izakhono zomatshini we-polyurethane foaming
1. Luqonde ngokupheleleyo uhlobo lomatshini wogwebu
Umgaqo osisiseko womatshini we-polyurethane we-foaming kukungenisa igesi kwisisombululo samanzi se-agent ekhupha amagwebu, kodwa iintlobo ezahlukeneyo zoomatshini bokugwebu bazisa igesi ngeendlela ezahlukeneyo.Umzekelo, uhlobo olushukumisayo olunesantya esiphantsi luxhomekeke kwiincakuba ezijikelezayo ezicothayo ukwazisa irhasi, nto leyo ekhokelela ekuphumeni kwamaqamu amancinci kunye nempumelelo ephantsi yogwebu;i-speed-speed impeller incike kwi-impeller ejikelezayo ye-high-speed to air bleed, ubukhulu beebhubhu abukwazi ukulawulwa, kwaye i-foam ayilingani;Uxinzelelo oluphezulu kunye neentlobo eziphantsi-eziphantsi zivelisa igwebu Isantya esiphezulu, ukusebenza kakuhle, ukufana kunye namaqamza amancinci.
2. Iiparamitha ezisisiseko zomatshini we-polyurethane ogwebu:
I-1) Isivuno: Isivuno sisixa se-foam esiveliswayo, ekufuneka sibe phezulu kancinci kunomthamo ofunekayo we-foam ngama-20%.Ukuze ushiye indawo yesixa se-foam eveliswayo, umda ophantsi kufuneka usetyenziswe njengesiseko sokubala nokubala, kwaye umda ophezulu awukwazi ukusetyenziswa.
2) Umthamo ofakiweyo womatshini we-polyurethane we-foaming: umthamo ofakiweyo ngumbane ofakiweyo.Le parameter ibaluleke kakhulu ekubaleni ukulungelelaniswa kwesekethe yombane kusetyenziso lwamandla lulonke.
3) Ubungakanani kunye nobubanzi boluhlu lomatshini we-polyurethane ogwebu.
Ixesha lokuposa: Jul-27-2022