Furo rakasimba rePolyurethaneinoshandiswa zvakanyanya muzvinhu zvinodzivirira kupisa, midziyo yekutonhodza, mapaneru ekuvaka, mafuro ekupfapfaidza, uye mapaneru esandwich nekuda kwekudzivirira kupisa kwakanaka uye hunhu hwemakanika. Zvisinei, mukugadzirwa kwemaindasitiri, rimwe rematambudziko anowanzo sangana nevagadziri nderekutikupora zvishoma nezvishoma kwefuro rakasimba repolyurethaneKugadzika zvishoma nezvishoma hakungoderedzi chete kushanda zvakanaka kwekugadzira asiwo kunokanganisa kunaka kwefuro, kugadzikana kwehukuru, uye kunamira.
Muchinyorwa chino, tichaongororazvikonzero zvikuru zvinoita kuti furo rakasimba repolyurethane rigare richipora zvishoma nezvishomauye kupamhinduro dzinoshandakune vagadziri.
Zvikonzero Zvinowanzoita Kuti Foam Irambe Ichishanda Zvishoma Nezvishoma muPolyurethane Rigid Foam
1. Kusarudzwa kwePolyurethane Catalyst Isina Kufanira
Iyo polyurethane catalyst inoita basa guru mukuenzanisakuita kwefuro(mvura + isocyanate → CO₂) uyemaitiro e gelling(polyol + isocyanate → urethane). Kana sisitimu ye catalyst isina kusarudzwa nemazvo kana kuti dosage isina kukwana, kumhanya kwekupisa kunoderera.
- Zvinokonzera aminedzora zvakanyanya maitiro ekufema furo.
- Zvinokonzera simbi (senge tin ne potassium salts) zvinokurumidzisa maitiro ekugadzira gelling nekupisa.
Kusawirirana pakati pezviviri izvi kunogona kutungamira nyore nyore kukupora zvishoma nezvishoma kwefuro rakaoma.
2. Tembiricha yakaderera kana kuti zvinhu zvisina kucheneswa
Maitiro epolyurethane anoenderana zvakanyanya nekupisa. Kana tembiricha yemhepo kana tembiricha yezvinhu zvisina kugadzirwa yakaderera zvakanyanya, mwero wekuita unoderera zvakanyanya, zvichiita kuti nguva yekupisa irebe.
3. Nhamba yeIsocyanate Isina Kururama
Nhamba ye isocyanate index (NCO/OH ratio) inofanira kudzorwa nokungwarira. Nhamba yakaderera inokonzera kusakwana kwekubatana uye kunonoka kugayiwa. Kune rumwe rutivi, nhamba yakakura kwazvo inogona kukonzera kuputsika asi kazhinji inoita kuti kugayiwa kukurumidze.
4. Mvura Yakawandisa MuSisitimu
Mvura inowanzo shandiswa mu polyurethane rigid foam systems. Zvisinei, mvura yakawandisa inowedzera kugadzirwa kweCO₂, inononoka kupera, uye inogona kukonzera kudonha kwefuro kana kupararira kwehuwandu husina kuenzana.
5. Zvimwe Zvisingaenderane Nezvimwe kana Zvine Surfactants
Kusawirirana zvakanaka kwezvinhu zvinoshandisa masurfactant, zvinodzivisa moto, kana zvimwe zvinowedzera zvine polyol systems zvinogona kukanganisa kuyera kwekupisa, zvichikonzerakuoma zvishoma nezvishomauye chimiro chisina kunaka chefuro.
Mhinduro dzekuvandudza kumhanya kwePolyurethane Rigid Foam
1. Gadzirisa Sisitimu yeCatalyst
- Sarudzazvinokonzeresa polyurethane zvakaringanazvinoita kuti furo nejeli zvienderere mberi nekukurumidza kwakakodzera.
- Sanganisazvinokonzeresa aminenezvinokonzeresa simbi(senge dibutyltin dilaurate, potassium octanoate, kana tertiary amines) kuti pave nekupora kwakafanana uye kunodzorwa.
- Gadzirisa chiyero che catalyst zvichienderana netembiricha uye fomura.
2. Kudzora Kugadzirisa Tembiricha
- Pisa zvinhu zvakabikwa kusvika patembiricha inokurudzirwa yekugadzirisa (kazhinji 20–25°C).
- Chengetedza mamiriro enzvimbo yekushandira munzvimbo dzakasiyana-siyana.
3. Gadzirisa Isocyanate Index
- Gadzirisa chiyero cheNCO/OH kuti chienzanise reactivity uye mashandiro efuro.
- Itai miedzo midiki musati magadzira zvakawanda kuti mudzivise matambudziko emhando yepamusoro.
4. Kutarisira Zviri Mumvura
- Chengeta huwandu hwemvura huri mukati mehuwandu hunokurudzirwa.
- Dzivisa kuwedzera mvura yakawanda iyo inononoka kupora uye inokanganisa kugadzikana kwefuro.
5. Ita shuwa kuti Kuwedzera Kunoenderana
- Sarudzazvigadzirwa zvesilicone zvemhando yepamusoroizvo zvinosimbisa chimiro chemasero uye zvinovandudza kufanana kwemasero.
- Shandisa zvinodzivisa moto uye zvinozadza zvisingakanganisi maitiro epolyurethane.
Mhedziso
Iyokupora zvishoma nezvishoma kwefuro rakasimba repolyurethanekazhinji kunokonzerwa nekusarudzwa kusina kunaka kwe catalyst, tembiricha yakaderera, index isiriyo ye isocyanate, mvura yakawandisa, kana kusashanda zvakanaka kwezvinowedzera.kugadzirisa masisitimu ekugadzirisa, kudzora mamiriro ekushanda, uye kusarudza zvinowedzera zvinoenderana, vagadziri vanogona kuvandudza zvakanyanya kukurumidza kwekupisa, mhando yefuro, uye kushanda zvakanaka kwekugadzira.
At Mingxu Zvitsva Zvishandiso, tanga tichinyanya kugadzirakugadzirwa kwefuro rakasimba repolyurethanekwemakore anopfuura makumi maviri. Tinopazvinhu zvinogadzirisa polyurethane zvakagadzirwa, zvinhu zvinogadzirisa manyuko emvura, uye nhungamiro yehunyanzvikubatsira vatengi kugadzirisa matambudziko anoshanda mukugadzirwa kwefuro.
Tinogamuchira nemufaro vadyidzani veindasitiri iyikuchinjana mazano, dzidzai kubva kune mumwe nemumwe, uye mubatsire pamwe chete mukusimudzira indasitiri yefuro rakasimba repolyurethane.
Nguva yekutumira: Gunyana-10-2025