Yintoni iDimeryl Diisocyanate (DDI)
I-Dimeryl Diisocyanate (DDI) yi-aliphatic diisocyanate eyahlukileyo enokusetyenziselwa ukulungiselela iipolymers ezineekhompawundi eziqulethe i-hydrogen esebenzayo. Yikhompawundi ende ene-36-carbon dimer fatty acid backbone. Ulwakhiwo oluphambili lwekhompawundi lunika i-DDI ukuguquguquka okuphezulu, ukumelana namanzi kunye nobuthi obuphantsi kwezinye ii-aliphatic isocyanates. I-DDI lulwelo olune-viscosity ephantsi olunyibilikayo lula kwii-solvents ezininzi ze-polar okanye ezingezizo ze-polar. Ngenxa yokuba yi-aliphatic isocyanate, ineempawu zokungatyheli. Inezibonelelo ezininzi zobuthi obuphantsi, kulula ukuyisebenzisa, ukunyibilika kwii-solvents ezininzi, ixesha lokuphendula elilawulekayo kunye nobuthathaka obuphantsi bamanzi. Luhlobo oluqhelekileyo lwe-isocyanate ekhethekileyo eluhlaza evuselelekayo, enokusetyenziswa kakhulu ekugqityweni kwelaphu, ii-elastomers, izincamathelisi kunye nezitywina, ii-coating, ii-inki kunye neminye imimandla yomkhosi kunye neyoluntu.
HAYI yaziwa ngokusebenza kwayo ngendlela engaqhelekanga kunye nokuguquguquka kwayo, nto leyo eyenza ukuba ibe lukhetho olufanelekileyo lokwenza iimveliso ze-polyurethane ezikumgangatho ophezulu. Ulwakhiwo lwayo lweemolekyuli luqulathe amaqela amabini e-isocyanate, ayenza ikwazi ukusabela ngee-polyols kunye nezinye izinto zokwenza ii-polyurethane polymers. Olu tshintsho luvumela ukwenziwa ngokwezifiso kwezinto ze-polyurethane ezineempawu ezithile, ezinje ngokuguquguquka, ukuqina, kunye nokumelana nobushushu.
Enye yezona nzuzo ziphambili ze HAYI yikhono layo lokuphucula ukusebenza kunye nokuqina kweemveliso ze-polyurethane. Ngokufaka i-DDI kwifomyula ye-polyurethane, abavelisi banokuphucula amandla, ukumelana nokukrweleka, kunye nokumelana neekhemikhali zezinto eziphuma kuyo. Oku kwenza i-DDI ibe yinxalenye ebalulekileyo ekuvelisweni kweengubo kunye nezincamathelisi ezisetyenziswa kwizicelo ezifuna amandla, ezifana neengubo zeemoto, zokwakha, kunye nezemizi-mveliso.
Ukongeza ekusetyenzisweni kwayo kwiingubo kunye nezinto zokuncamathelisa, HAYI ikwasetyenziswa kakhulu ekuveliseni ii-polyurethane elastomers kunye neefoam. Ezi zinto zixatyiswa ngenxa yokuqina kwazo, ukumelana nempembelelo, kunye neempawu zokuthambisa, nto leyo ezenza zifaneleke ukusetyenziswa kumashishini afana nezihlangu, ifenitshala, kunye nezixhobo zemidlalo. Ngokusebenzisa iimpawu ezizodwa ze-DDI, abavelisi banokwenza ii-polyurethane elastomers kunye neefoam ezihlangabezana neemfuno zokusebenza ezingqongqo zezi marike zahlukeneyo.
Ngaphezu koko, HAYI Inika ukuhambelana okuhle kakhulu noluhlu olubanzi lwee-polyols kunye nezongezo, ivumela abaqulunqi ukuba balungelelanise iipropati zezinto ze-polyurethane ukuhlangabezana neemfuno ezithile zesicelo. Olu kuguquguquka lwenza kube lula ukuphuhliswa kwezisombululo ezenzelwe wena kumashishini ahlukeneyo, kubandakanya ulwakhiwo, uthutho, kunye neempahla zabathengi. Nokuba kukuphucula ukuqina kweengubo zokukhusela okanye ukuphucula intuthuzelo yezinto zokuthambisa, i-DDI idlala indima ebalulekileyo ekuvumeleni ukuveliswa kwezinto ezintsha kunye nokusebenza kwiimveliso ezisekwe kwi-polyurethane.
Njengomthengisi ophambili we HAYI, sizimisele ukubonelela abathengi bethu ngeemveliso ezikumgangatho ophezulu nezithembekileyo. Ubuchule bethu bobuchwephesha kunye nolwazi lwethu kushishino lusenza sikwazi ukuxhasa abavelisi ekwenzeni ngcono iindlela zabo zokwenziwa kunye nokufezekisa ukusebenza kwemveliso abayifunayo. Ngoluhlu lwethu olubanzi lwamanqanaba e-DDI kunye nenkxaso yobugcisa, sizama ukuba liqabane elithembekileyo kumashishini afuna ukuphucula ukusebenza kunye nozinzo lweemveliso zawo ze-polyurethane. Okwangoku, sinamandla ophando nophuhliso oluqinileyo, oluqinisekisa ukuba sinokuphanda kwaye siphuhlise i-DDI entsha ngokwemfuno ekhethekileyo yabathengi bethu.
I HAYI ukuba nePropati ethile ebonakalayo xa kuthelekiswa ne-IPDI, i-MDI, i-TDI.
| Inkcazo | Ubunzima bemolekyuli obuhambelanayo | Umxholo we-NCO, % | I-chlorine enokutsalwa ngamanzi, % | Uxinzelelo lomphunga, mmHg | Indawo yokunyibilika, ℃ | Ubuthi |
| HAYI | 600 | 13.6 ~ 15.2 | 0.05 | ＜0.001（25℃） | -34.4 | ubuthi obuphantsi |
| I-IPDI | 222.2 | 37.8 | 0.02 | 0.003(20℃） | -60 | ubuthi obuphakathi |
| I-TDI | 174 | 48.3 | 0.01 | 0.042(20℃） | 5 ~ 6.5 | ubuthi obukhulu |
| I-MDI | 250.26 | 33.6 | 0.05 | - | 38 | ubuthi obuphakathi |
Inkcazo yethu ye HAYI ngolu hlobo lulandelayo:
| INTO | ISALATHISO |
| Inkangeleko | Ulwelo olunamafutha olungenambala nolubonakalayo |
| Umxholo we-Isocyanate, % | 13.60 ~ 15.00 |
| I-hydrolytic chloride, % | ≤0.05 |
| Ixabiso le-PH | 6.0 ~ 7.0 |
| Ubuninzi, g/ml | 0.920 ~ 0.930 |
| Ukufuma, % | ≤0.02 |
| Ukuxinana, mPa.s, 20℃ | ≤170 |
| * Ukongeza: Inkampani ingaphanda kwaye iphuhlise i-DDI entsha ngokweemfuno ezikhethekileyo zabathengi bethu. | |
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