Polyols: Zvishandiso Zvizhinji zveMashandisirwo eMaindasitiri neVatengi
Minda mikuru yekushandisa
Muindasitiri yemakemikari, mapolyol ndiwo akakosha pakugadzira zvinhu zvine huremu hwakawanda senge mapolyester, mapolyether, uye mapolyurethane. Semuenzaniso, ethylene glycol inoshandiswa kugadzira polyethylene terephthalate (PET), inoshandiswa zvakanyanya mumabhodhoro epurasitiki nemafiber. Polyethylene glycol (PEG) inoshandiswa kugadzira masurfactants akasiyana-siyana uye mafuta ekuwedzera. Pamusoro pezvo, mapolyol anogona kushanda sezvinhu zvinonyungudutsa makemikari akasiyana-siyana, zvichiwedzera kushanda zvakanaka kwemhinduro.
Muindasitiri yemishonga, mapolyol anoshandiswa zvakanyanya sezvinhu zvinonyungudutsa, zvinogadzirisa purasitiki, uye zvinobvisa hunyoro. Semuenzaniso, propylene glycol neglycerol zvinowanzo shandiswa mukugadzira majekiseni, zvinwiwa zvinonwiwa, uye mafuta ekuwedzera kunyungudika kwemishonga uye kugadzikana kwayo. Pamusoro pezvo, mapolyol anogona kushandiswa kugadzira mishonga inodzorwa, ichidzora huwandu hwemishonga inoburitswa.
Muindasitiri yezvekudya, mapolyol anoshandiswa sezvinotapira, zvinonhuwirira, uye zvinosanganisa chikafu. Semuenzaniso, glycerol ne polyethylene glycol zvinogona kushandiswa mukugadzira zvinwiwa zvinonaka, zvinhu zvakabikwa, nezvinwiwa, zvichiita kuti zvitapire uye zvirambe zvichichengetedza hunyoro. Pamusoro pezvo, mapolyol anogona kushandiswa kugadzirisa magadzirirwo uye kunzwa kwemuromo kwechikafu, zvichiwedzera hupenyu hwacho.
Muindasitiri yezvizoro nekuchengetedza ganda, mapolyol anoshandiswa zvakanyanya sema humectants uye emulsifiers. Semuenzaniso, propylene glycol neglycerol zvinogona kunwisa hunyoro, zvichiita kuti ganda nebvudzi zvirambe zvakanyorova. Pamusoro pezvo, mapolyol anogona kushandiswa mukugadzira mafuta ekudzivirira zuva, shampoos, uye conditioners, zvichipa hunyoro uye mafuta anozora.
Muindasitiri yemapurasitiki, mapolyol anoshandiswa semapurasitiki kuti mapurasitiki agone kuchinjika uye kugadziriswa. Semuenzaniso, glycerol ne polyethylene glycol zvinogona kushandiswa semapurasitiki e polyvinyl chloride (PVC), zvichivandudza kuchinjika kwayo uye kugara kwayo kwenguva refu. Pamusoro pezvo, mapolyol anogona kushandiswa kugadzira mapurasitiki anogona kuora, zvichideredza kukanganisa kwezvakatipoteredza.
Muindasitiri yekupenda neinki, mapolyol anoshandiswa sezvinhu zvinonyungudutsa uye zvinosanganisa makemikari. Anogona kunyungudutsa maresini akasiyana-siyana uye pigment, zvichipa hunhu hwakanaka hwekugadzira firimu. Semuenzaniso, polyethylene glycol inogona kushandiswa kugadzira machira ekudzivirira nemvura uye inki, zvichipa mhinduro dzinoshanda uye dzisingakuvadzi nharaunda.
Magadzirirwo
| Zita rechigadzirwa | Polyester Polyols | |||||||||
| Chitarisiko | Mvura yakasimba kana yakasimba isina ruvara kusvika yeyero yakapfava | |||||||||
| Kurema kweMorekuru | 500-5000 g/mol | |||||||||
| Nzvimbo Yokubikira | >200 | |||||||||
| Kuchena | 98%,99.5% | |||||||||
| Kuwanda kwevanhu | 1.10-1.15 | |||||||||
| Kodhi yeHS | 3907910000 | |||||||||
| Kushandiswa | Kuputira nepolyurethane, inki; zvigadziko zveshangu, zvisimbiso, matai | |||||||||
Pepa Rekudzora Hunhu
| Zita rechigadzirwa | Polyester Polyols | ||||||
| CHINHU | Zvakajairika | Mhedzisiro | |||||
| Chroma (APHA) | ≤30 | 11 | |||||
| Kusviba pa25℃ (mPas) | 1100-1500 | 1296 | |||||
| Mvura Yakawanda (%) | ≤0.08 | 0.017 | |||||
| Kukosha kweHydroxyl(mgKOH/g) | 32.5-35.5 | 34.2 | |||||
| Kukosha kweAsidhi (meKOH/s) | ≤0.08 | 0.029 | |||||
| Kukosha kwepH | 5.0-7.5 | 6.7 | |||||
| K+(mgkg) | ≤5 | 1.0 | |||||
| Mhedziso | Anokodzera | ||||||
Muchidimbu
Muchidimbu, mapolyol, sezvinhu zvakakosha zvemakemikari emuchadenga, anoita basa guru mumaindasitiri akawanda. Haangosimudziri chete mashandiro ezvigadzirwa uye mhando asiwo anotsigira kukura kwemaindasitiri emazuva ano. Nekufambira mberi kwetekinoroji, mikana yekushandisa mapolyol ichave yakakura zvakanyanya.