Chii chinonzi Dimeryl Diisocyanate (DDI)?
Dimeryl Diisocyanate (DDI) imhando yakasiyana ye aliphatic diisocyanate inogona kushandiswa kugadzira ma polymer ane makemikari ane active hydrogen. Imhando ye chain-long-chain ine 36-carbon dimer fatty acid backbone. Chimiro chikuru che chain chinopa DDI kuchinjika kwakanyanya, kuramba mvura uye kuchetura kushoma kune mamwe aliphatic isocyanates. DDI imvura ine viscosity yakaderera inonyungudika nyore nyore mu polar kana non-polar solvents. Nekuti i aliphatic isocyanate, ine hunhu hwekuti haisi yero. Ine mabhenefiti akawanda ekuti ine chepfu shoma, iri nyore kushandisa, inonyungudika mu solvents dzakawanda, inodzoreka nguva yekuita uye kushoma kwemvura. Imhando yakajairika ye green biorenewable special isocyanate, iyo inogona kushandiswa zvakanyanya mukupedzisa machira, elastomers, adhesives uye sealants, coatings, inks nedzimwe nzvimbo dzemauto nedzehurumende.
AIHWA inozivikanwa nekuita kwayo zvinhu zvakasiyana-siyana uye kugona kwayo kuita zvinhu zvakasiyana-siyana, zvichiita kuti ive sarudzo yakanaka yekugadzira zvigadzirwa zve polyurethane zvemhando yepamusoro. Maumbirwo ayo emamorekuru ane mapoka maviri e isocyanate, ayo anoibvumira kuita zvinhu nema polyols nemamwe ma compounds kuti igadzire ma polyurethane polymers. Kuita uku kunoita kuti zvinhu zve polyurethane zvigadzirwe zvine hunhu hwakasiyana, hwakadai sekuchinjika, kugara kwenguva refu, uye kuramba kupisa.
Chimwe chezvakanakira zvikuru zve AIHWA kugona kwayo kuwedzera mashandiro uye kugara kwenguva refu kwezvigadzirwa zve polyurethane. Nekuisa DDI mumafomu e polyurethane, vagadziri vanogona kuvandudza simba, kuramba kukwesha, uye kuramba makemikari kwezvinhu zvinobva. Izvi zvinoita kuti DDI ive chinhu chakakosha mukugadzirwa kwezvipfeko zvinonamira uye zvinonamatira zvinoshandiswa mukushandiswa kwakaoma, senge zvemotokari, zvekuvaka, uye zvemaindasitiri.
Pamusoro pekushandiswa kwayo mukuputira uye kunamira, AIHWA Inoshandiswawo zvakanyanya mukugadzira ma polyurethane elastomers nemafuro. Zvinhu izvi zvinokosheswa nekuda kwekupfava kwazvo, kuramba kukanganiswa, uye hunhu hwekutsvinda, zvichiita kuti zvikodzere kushandiswa mumaindasitiri akadai seshangu, fenicha, uye midziyo yemitambo. Nekushandisa hunhu hwakasiyana hweDDI, vagadziri vanogona kugadzira ma polyurethane elastomers nemafuro anosangana nezvinodiwa zvekushanda zvakaoma zvemisika iyi yakasiyana-siyana.
Uyezve, AIHWA inopa kuenderana kwakanaka nemarudzi akasiyana-siyana emapolyols nezvimwe zvinowedzera, zvichibvumira maformulator kugadzirisa hunhu hwezvinhu zvepolyurethane kuti zvienderane nezvinodiwa zvekushandisa. Kuchinjika uku kunogonesa kugadzirwa kwemhinduro dzakagadzirirwa maindasitiri akasiyana-siyana, kusanganisira kuvaka, kutakurwa, uye zvinhu zvevatengi. Kungave kuri kuvandudza kugara kwenguva refu kwemachira ekudzivirira kana kuwedzera kugadzikana kwezvinhu zvinodzivirira, DDI inoita basa rakakosha mukugonesa hunyanzvi uye kushanda zvakanaka muzvigadzirwa zvakagadzirwa nepolyurethane.
Semutengesi anotungamira we AIHWA, takazvipira kupa zvigadzirwa zvemhando yepamusoro uye zvakavimbika kuvatengi vedu. Hunyanzvi hwedu hwehunyanzvi uye ruzivo rweindasitiri zvinotigonesa kutsigira vagadziri mukuvandudza mafomati avo uye kuzadzisa mashandiro avo avanoda. Nerubatsiro rwedu rwakakwana rwemagiredhi eDDI uye rutsigiro rwehunyanzvi, tinoedza kuva mubatsiri akavimbika kumabhizinesi ari kutsvaga kusimudzira mashandiro uye kugara kwenguva refu kwezvigadzirwa zvavo zvepolyurethane. Panguva imwe chete nehunyanzvi hwakasimba hweR&D, hunotivimbisa kuti tinogona kutsvagisa nekugadzira DDI itsva zvichienderana nezvinodiwa nevatengi vedu.
Iyo AIHWA kuva nePfuma chaiyo chaiyo zvichienzaniswa neIPDI, MDI, TDI.
| Tsanangudzo | Kurema kwemasero emuviri | Zviri muNCO, % | Klorini inonyungudika nemvura, % | Kumanikidzwa kwemhepo, mmHg | Nzvimbo yekunyunguduka, ℃ | Huturu |
| AIHWA | 600 | 13.6 ~ 15.2 | 0.05 | ＜0.001（25℃） | -34.4 | chepfu yakaderera |
| IPDI | 222.2 | 37.8 | 0.02 | 0.003(20℃） | -60 | chepfu yepakati |
| TDI | 174 | 48.3 | 0.01 | 0.042(20℃） | 5 ~ 6.5 | chepfu yakanyanya |
| MDI | 250.26 | 33.6 | 0.05 | - | 38 | chepfu yepakati |
Tsanangudzo yedu ye AIHWA sezvinotevera:
| CHINHU | INDEX |
| Chitarisiko | Mvura ine mafuta isina ruvara uye inoonekera |
| Zviri mukati meIsocyanate, % | 13.60 ~ 15.00 |
| Hydrolytic chloride, % | ≤0.05 |
| Kukosha kwePH | 6.0 ~ 7.0 |
| Kuwanda kwemvura, g/ml | 0.920 ~ 0.930 |
| Hunyoro, % | ≤0.02 |
| Kusviba, mPa.s, 20℃ | ≤170 |
| * Pamusoro pezvo: Kambani inogona kutsvagisa nekugadzira DDI itsva zvichienderana nezvinodiwa nevatengi vedu. | |
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