Musiyano uripo pakati pePolyurethane yakavakirwa pamvura nePolyurethane yakavakirwa pamafuta
Kuputira kwepolyurethane isingapindi mvura kwakavakirwa mumvura chinhu chisingakuvadzi nharaunda chine mamorekuru akawanda epolymer elastic isingapindi mvura ine mamorekuru akanaka uye isingapindi mvura. Inobata zvakanaka zvinhu zvakagadzirwa nesimende zvakaita sekongiri, matombo nesimbi. Chigadzirwa ichi chine makemikari akasimba uye chinogona kutsungirira kuratidzwa kwezuva kwenguva refu. Chine hunhu hwekupfava kwakanaka uye kureba kukuru.
Zvimiro zveKushanda kweChigadzirwa
1. Chitarisiko: Chigadzirwa chinofanira kunge chisina mapundu mushure mekukurunga uye chakafanana.
2. Ine simba guru rekudhonza, kureba kwakanyanya, kusimba kwakanaka, kushanda zvakanaka kana tembiricha yakakwira neyakaderera, uye inokwanisa kuchinjika zvakanaka pakukotama, kutsemuka, uye kuchinja kwesubstrate.
3. Kunamira kwayo kwakanaka, uye hapana mushonga weprimer unodiwa pamhando dzakasiyana dzesubstrates dzinoenderana nezvinodiwa.
4. Pendi yacho inooma yoita firimu mushure mezvo isingapindi mvura, haipindi ngura, haipindi chakuvhuvhu, uye haipindi kuneta.
5. Kushanda kwayo zvakanaka pakuchengetedza nharaunda, sezvo isina benzene kana coal tar, uye hapana chimwe chinhu chinonyungudutsa chinodiwa panguva yekuvaka.
6. Chinhu chimwe chete, chinoiswa muchando chiri nyore kushandisa uye kuisa.
Kushandiswa kwechigadzirwa ichi
1. Yakakodzera makamuri epasi pevhu, nzvimbo dzekupaka mota pasi pevhu, nzira dzepasi pevhu dzakavhurika uye matunnel
2. Makicheni, dzimba dzekugezera, madziro epasi, mabhakoni, matenga asina kuvharwa.
3. Kudzivirira mvura yakamira uye kudzivirira mvura yemakona, majoini nezvimwe zvinhu zvakanaka, pamwe nekuvhara majoini ekudzivirira mvura.
4. Kudzivirira mvura mumadziva ekushambira, matsime ekugadzira, matangi emvura, uye nzira dzekudiridza.
5. Kudzivirira mvura munzvimbo dzekupaka mota nedenga remba.
Kuputira kwepolyurethane isingapindi mvura kwakavakirwa pamafuta ipurasitiki yakawanda isingapindi mvura inooma uye inooma pamusoro. Yakagadzirwa ne isocyanates ne polyols sezvinhu zvikuru, ine zvinhu zvakasiyana-siyana zvinobatsira zvakaita sekubatanidza ma hardeners akavanzika uye ma plasticizers, uye inogadzirwa nemaitiro akakosha ekushaya mvura mumuviri uye polymerization reaction. Kana ikashandiswa, inoiswa pa substrate isingapindi mvura, uye firimu re polyurethane risingapindi mvura rinoumbwa pamusoro pe substrate ne chemical reaction pakati pe -NCO end group ye polyurethane prepolymer nehunyoro mumhepo.
Zvimiro zveKushanda kweChigadzirwa
1. Chitarisiko: Chigadzirwa ichi chakafanana uye chakakora chisina gel nemapundu.
2. Chinhu chimwe chete, chakagadzirira kushandiswa panzvimbo yacho, chakagadzirwa nechando, chiri nyore kushandisa, uye chinodiwa chehunyoro hwepasi hachisi chakaoma.
3. Kunamatira kwakasimba: Kunamatira zvakanaka pakongiri, dhaka, ceramics, plaster, huni, nezvimwewo, zvinhu zvekuvaka, kuchinjika zvakanaka pakupwanyika, kutsemuka uye kuchinja kwepasi.
4. Firimu risina misono: Yakabatana zvakanaka, hapana chikonzero chekuisa primer pamhando dzakasiyana dzepasi dzinoenderana nezvinodiwa.
5. Simba guru rekudhonza firimu, mwero wekureruka kukuru, kusimba kwakanaka, kugona kuchinjika zvakanaka pakuderera uye kuchinja kwechikamu chepasi.
6. Kusabatwa nemakemikari, kusabatwa nekupisa kwakaderera, kusakwegura, kusabatwa nefungus, kusapinda mvura zvakanaka. Chiyero chekushandisa chigadzirwa ichi
Kuputira kwepolyurethane isingapindi mvura kwakavakirwa pamafuta kunogona kushandiswa pakuvaka zvivakwa zvitsva nezvekare, matenga, makamuri epasi, dzimba dzekugezera, madziva ekushambira, mapurojekiti ekudzivirira veruzhinji, nezvimwewo. Inogona zvakare kushandiswa pakuvaka mapaipi esimbi asingapindi mvura.
Musiyano uripo pakati pe polyurethane yakagadzirwa nemafuta ne polyurethane yakagadzirwa nemvura:
Polyurethane yakagadzirwa nemafuta ine huwandu hwakasimba kupfuura polyurethane yakagadzirwa nemvura, asi yakagadzirwa neisocyanate, polyether, nezvimwe zvinhu zvinobatsira zvakaita se mixed latent curing agent uye plasticizers, zvakagadzirwa nenzira dzakasiyana pakupisa kwakanyanya, senge kubvisa mvura uye polymerization reaction. Ine mwero mukuru wekusvibiswa, zvichienzaniswa ne polyurethane yakagadzirwa nemvura, inova chigadzirwa chegirini uye chine hushamwari kune nharaunda chisina kusvibiswa. Yakakodzera kushandiswa mumba, senge makicheni nedzimba dzekugezera.
Nguva yekutumira: Chivabvu-29-2024