Ihe Polyurethane Hydrophobic A na-emepụta site na Theoremchem Dimeryl Diisocyanate DDI
Ihe Ndị Dị Mkpa Ị Ga-eburu n'Obi
- Theoremchem DDI na-eji ogologo carbon agbụ ígwè egbochi mmiri ma na-echebe polyurethanes site na mmebi mmiri.
- Ihe ndị e ji DDI mee na-anọgide na-agbanwe agbanwe n'oge oyi ma na-eguzogide odo odo site na ikpughe anyanwụ.
- Ndị na-emepụta ihe na-eji DDI emepụta ihe siri ike mkpuchi mmiri anaghị agba mmiri, ihe mkpuchi mmiri, na nchekwa eletrọniki.
Nhazi Kemịkalụ na Usoro Mmiri Hydrophobic nke DDI
Theoremchem Dimeryl Diisocyanate (DDI) na-agbanwe usoro polyurethane ọkọlọtọ ka ọ bụrụ polima ndị na-egbochi mmiri. Usoro kemịkalụ pụrụ iche ya na-ejikọta ihe onwunwe aliphatic na nnukwu usoro hydrocarbon. Nhazi a na-emepụta ihe nchebe siri ike megide mmiri ịbanye na ọkwa molekul.
Ọkpụkpụ azụ nke na-abụghị polar C36 Dimer Fatty Acid
Isi ihe nzuzo dị n'ime ka mmiri ghara iguzogide Theoremchem DDI dị n'ime ya. Diisocyanates ọdịnala dịka MDI ma ọ bụ TDI nwere obere agbụ carbon ma ọ bụ mgbanaka aromatic. N'ụzọ dị iche, DDI nwere azụ ogologo C36 dimer fatty acid.
Isocyanates nkịtị (Agbụ dị mkpụmkpụ) ---> DDI nke nwere ike ime ka mmiri dị elu (C36 Dimer Backbone) ---> Nnukwu ihe nchebe mmiri dị oke njọ Agbụ ígwè hydrocarbon 36 a abụghị polar kpamkpam. Usoro kemịkalụ ndị na-abụghị polar anaghị emepụta njikọ hydrogen na molekul mmiri. Kama nke ahụ, agbụ ígwè alkyl dị ogologo na-akwapụ molekul mmiri na netwọk polymer. Njupụta dị elu nke atọm carbon na hydrogen na-emepụta ihe mgbochi hydrophobic na-aga n'ihu n'ime matrix a gwọrọ.
Ihe dị mkpa: Ọkpụkpụ azụ nke C36 dimer fatty acid na-arụ ọrụ dị ka usoro lipid dị n'ime polyurethane matrix. Ọ na-achụpụ mmiri mmiri ma na-egbochi mgbasa mmiri site na ihe ahụ.
Àgwà Aliphatic na Ike Elu Dị Ala
Theoremchem DDI nwere agwa aliphatic zuru oke. Ihe mejupụtara aliphatic enweghị mgbanaka na-esi ísì ụtọ, nke na-egbochi foto-oxidation na ịcha odo n'okpuru anyanwụ. Ọzọkwa, nhazi aliphatic C36 a na-ebelata ike elu nke polyurethanes emepụtara nke ukwuu.
Ihe ndị nwere ike dị ala n'elu na-eme ka mmiri dị elu karịa ịgbasa. Polyurethanes nke DDI na-egosipụta akụkụ dị elu nke njikọ mmiri.
| Ụdị Isocyanate | Ọdịdị Kemịkal | Ọkwa Ike Elu | Mmiri Na-eguzogide Mmiri |
|---|---|---|---|
| Usoro DDI nke Usoro | C36 Aliphatic | Dị Ala nke Ukwuu | Kachasị Elu |
| IPDI / HDI | Aịfatik dị mkpụmkpụ | Ọkara | Nke dị n'etiti |
| MDI / TDI | Na-esi ísì ụtọ | Elu | Ọ dịghị mma ruo n'ezi omume |
Ike dị ala n'elu ala na-egbochi mmiri mmiri ịgba mmiri n'elu polima. Mmiri ozuzo na ikuku na-agbagharị ihe ahụ n'enweghị nsogbu. Usoro a na-ekwe nkwa nchebe ogologo oge maka ihe ndị dị nro dị n'okpuru mkpuchi ma ọ bụ ihe mkpuchi.
Mgbochi Steric megide Mwepụ Mmiri Hydrolytic
Mmiri na-emebi polyurethanes nkịtị site n'ịwakpo njikọ ester na urethane. A na-akpọ usoro mmebi kemịkalụ a hydrolysis. Theoremchem DDI na-egbochi hydrolysis site na usoro a maara dị ka mgbochi steric.
Ogologo agbụ C36 dimer na-emepụta nnukwu oghere gburugburu njikọ kemịkalụ ndị na-adịghị ike. Ogwe aka hydrocarbon ndị a buru ibu na-egbochi molekul mmiri ($H_2O$) iru njikọ urethane.
- Ndị otu C36 buru ibu jupụtara na mbara ala molekul gbara otu ester na urethane gburugburu.
- Mkpụrụ ndụ mmiri enweghị ike ịnweta njikọ kemịkalụ iji kpalite nkewa njikọ.
- Netwọk polima ahụ na-ejigide ike nrụgide mbụ ya na ike mgbanwe ya ka oge na-aga.
Nnyocha Ngwa nke DDI (Dimeryl Diisocyanate) gosiri na nnukwu ìgwè aliphatic na-egbochi molekul mmiri ka ha ghara iru ebe njikọ dị mfe. N'ihi ya, polyurethanes ejiri Theoremchem DDI mepụta na-adịgide ndụ mgbe niile na gburugburu ebe ọkụ, mmiri mmiri, na mmiri dị n'ime ala na-enweghị mmebi nhazi.
Uru Arụmọrụ nke Polyurethanes Dabere na DDI
Theoremchem Dimeryl Diisocyanate (DDI) na-enye ihe polyurethane pụrụ iche n'ahụ na kemikal. Ndị na-emepụta ihe mmepụta ihe na-enweta uru arụmọrụ pụrụ iche mgbe ha na-eji DDI dochie isocyanates ọdịnala. Agbụ aliphatic C36 dị ogologo na-enye nguzozi kachasị mma n'etiti ike igwe na ntachi obi gburugburu ebe obibi.
Nguzogide Mmiri Dị Elu na Ịka nká
Mkpụrụ ndụ mmiri na-akpata mbibi dị egwu nke agbụ ígwè polymer ruo ogologo oge. Theoremchem DDI na-edozi nsogbu a site n'ikpuchi njikọ urethane nke nwere mmetụta hydrolytic.
Isi Nghọta: Usoro eji DDI eme ihe na-ejigide ruo 95% nke ike nrụgide mbụ ha mgbe ha nwalechara ogologo oge n'ime mmiri, ebe polyurethanes nke dabeere na TDI na-emebi emebi nke ukwuu.
Nnyocha Ngwa nke DDI (Dimeryl Diisocyanate na-egosi ike ya ichekwa ihe ndị dị n'ime igwe mgbe o kpughesịrị ya ruo ogologo oge na mmiri na okpomọkụ. Nnukwu azụ C36 hydrophobic na-egbochi mmiri ịbanye. N'ihi ya, polima na-eguzogide nkụcha ígwè, ime ka ọ dị nro, na mmebi n'ime ndụ ọrụ ọtụtụ afọ.
Mmiri dị ala na ike ịpụ apụ nke ọma
Netwọk polyurethane nke nwere DDI na-egosi obere mmiri mmiri na-anabata nke ọma. Ngwugwu hydrophobic dị oke njọ na-emepụta ihe mgbochi anụ ahụ siri ike n'ime elastomer ejikọtara ọnụ.
- Mmiri Dị Ala nke Ukwuu: Elastomers nke dabeere na DDI na-amịkọrọ mmiri na-erughị 0.5% site na ibu mgbe awa 24 nke mikpuru kpamkpam.
- Ihe Mgbochi Uzuoku Na-adịgide: Netwọk hydrophobic na-egbochi nnyefe uzuoku mmiri site na ihe nkiri polymer dị gịrịgịrị.
- Nchedo Nrụgide: Mbelata nke ikuku na-egbochi ihe ndị dị n'okpuru ígwè megide nchara na mmebi oxidative.
Mmetụta dị ala nke mmiri a na-egbochi ọnya na mfu nke ihe mkpuchi ndị e tinyere n'ime mmiri ma ọ bụ n'okpuru mmiri.
Mgbanwe Kachasị Mma na Arụmọrụ Okpomọkụ Dị Ala
Usoro DDI nke Theoremchem nwere usoro dimer ogologo aliphatic. Agbụ ígwè a na-agbanwe agbanwe na-ebelata okpomọkụ mgbanwe iko ($T_g$) nke akụkụ dị nro na nhazi polyurethane nke ukwuu.
Ogologo Aliphatic Dimer Chain ---> Ala Tg ---> Njem Chain Dị Elu na Sub-Zero Temps DDI na-enye ngagharị dị elu na ime plastik dị n'ime na-achọghị ihe mgbakwunye mpụga na-agbanwe agbanwe. Tebụl dị n'okpuru na-akọwa mmezi arụmọrụ emere na sistemụ DDI:
| Metric / Atụmatụ | Arụmọrụ Sistemụ DDI/IPDI megide TDI nkịtị | Usoro dị n'okpuru |
|---|---|---|
| Ogologo oge na mmụba ezumike | >150% dị elu (>2.51 ugboro dị elu) | E si na nhazi aliphatic dimer gbasaara nweta ya |
| Mgbanwe dị n'akụkụ gburugburu | Na-ejigide ike ọkpụkpụ na-enweghị mgbawa ma ọ bụ mgbawa | A na-ahụta ya site na obere okpomọkụ mgbanwe iko ($T_g$) |
Ndị na-emepụta ihe na-enweta ike iguzogide mmetụta dị elu n'ofe windo okpomọkụ ọrụ sara mbara.
- Ogologo oge na Mmezi Nkwụsị: Usoro nhazi aliphatic nke DDI nke ogologo agbụ ígwè na-enye ngagharị na ike mgbanwe dị elu, na-egbochi mgbawa n'okpuru nrụgide ugboro ugboro ma ọ bụ nrụgide mmetụta.
- Mgbanwe dị ala na okpomọkụ: DDI na-ebelata okpomọkụ mgbanwe iko ($T_g$) nke akụkụ dị nro nke polyurethane, na-eme ka elastomer nwee ike ịnọgide na-adị elu mgbanwe na obere okpomọkụ na-enweghị nsogbu site na embrittlement.
Nguzogide Kemịkalụ na UV dị mma
Aliphatic isocyanates na-enye ike iguzogide radieshon anyanwụ na kemịkalụ siri ike. N'adịghị ka ihe ndị na-esi ísì ụtọ, DDI enweghị njikọ abụọ nke carbon-carbon nke na-amịkọrọ ìhè anyanwụ.
| Ụdị Isocyanate | Nguzogide Mbibi UV na Ịchacha Yellowing | Mmetụta na Ngwa |
|---|---|---|
| Aliphatic DDI Polyurethane | Nguzogide pụrụ iche megide mmebi na mgbanwe agba nke UV kpatara | Na-ahụ na mma na arụmọrụ ogologo oge na ihe ndị dị n'èzí |
| Isocyanates na-esi ísì ụtọ | Ọ dịghị mma / Ọ na-adị mfe ibute mmebi UV na ịcha odo | Na-ebelata ịdị mma maka ngwa ndị dị elu n'èzí ogologo oge |
Mkpuchi DDI na-eguzogide ìhè ultraviolet na-aga n'ihu na-enweghị agba odo odo, chalk, ma ọ bụ obere mgbawa elu. Ọzọkwa, azụ hydrocarbon na-abụghị polar na-eguzogide asịd, alkalis, na nnu, na-echekwa iguzosi ike n'ezi ihe ogologo oge n'ebe siri ike nke ụlọ ọrụ mmepụta ihe.
Ntuziaka Nhazi na Nhazi maka Mmiri Mmiri Kachasị Mma
Ndị na-emepụta ihe ga-agbaso usoro nhazi ziri ezi iji mee ka àgwà ndị na-egbochi mmiri dịkwuo elu Usoro DDI nke UsoroNhazi kemịkalụ na nhọrọ akụkụ dị iche iche na-eme ka a gwọọ ya nke ọma ma nwee njupụta netwọk dị elu.
Nhazi Stoichiometric na Nhazi NCO/OH
Inweta oke hydrophobicity chọrọ njikwa ziri ezi nke stoichiometric index. Ndị na-emepụta ihe na-enwekarị oke NCO/OH n'etiti 1.03 na 1.08.
- Ndị otu isocyanate gabigara ókè na-akwụghachi mmiri dị n'ime ala n'oge nhazi.
- Mmeghachi omume zuru oke nke otu hydroxyl na-egbochi ebe hydrophilic na-adịghị emeghachi omume n'ime matrix ahụ.
- Njupụta njikọ dị elu na-emepụta matriks polymer siri ike nke na-eguzogide ịbanye mmiri.
Nhazi stoichiometric kwesịrị ekwesị na-eme ka e nwee njikọ polymer zuru oke. N'ihi ya, polyurethane a gwọrọ agwọ na-achụpụ mmiri ma na-eme ka usoro ahụ kwụsie ike.
Nhọrọ Polyol maka Mmetụta Mmiri Na-eme Ka Mmadụ Synergistic
Nhọrọ Polyol na-emetụta ike ikpeazụ nke polyurethane elastomer ozugbo. Ijikọta Theoremchem DDI na hydrophobic polyols na-emepụta ike siri ike nke iguzogide mmiri.
Ndụmọdụ maka nhazi: Ijikọ DDI na polyol ndị na-abụghị polar dịka Polybutadiene nke a kwụsịrị na hydroxyl (HTPB) na-emepụta polyurethane na-ebelata mmiri nke ukwuu.
Nnyocha Ngwa nke DDI (Dimeryl Diisocyanate na-egosi na ijikọta DDI na polyols dabere na dimer acid na-eme ka nkwụsi ike hydrolytic dịkwuo mma. Akụkụ ndị a dị nro na-abụghị polar na-arụ ọrụ n'akụkụ azụ C36, na-emechi matrix polymer nke ọma megide mwakpo mmiri mmiri.
Nhọrọ Okpomọkụ Mmeghachi omume na Ihe Mmegide
Mmeghachi omume nke Theoremchem DDI na-enye ohere ijikwa mmeghachi omume ngwa ngwa. Ndị ọkachamara na kemịkalụ na-ejigide okpomọkụ mmepụta n'etiti 70°C na 90°C n'oge nkwadebe prepolymer.
| Usoro Mmeghachi omume | Oke / Ụdị akwadoro | Uru Usoro |
|---|---|---|
| Okpomọkụ njikọta | 70°C – 90°C | Na-achịkwa ọsọ mmeghachi omume na-enweghị mmeghachi omume ndị ọzọ |
| Ụdị ihe mkpali | Bismuth ma ọ bụ Tin Octoate | Na-eme ka mmepụta urethane dị ngwa nke ọma |
Profaịlụ okpomọkụ a na-achịkwa na-egbochi mmeghachi omume n'akụkụ ma na-echekwa usoro hydrophobic nke yinye polymer.
Nnyocha Ngwa nke DDI (Dimeryl Diisocyanate)
Ndị na-emepụta ihe mmepụta ihe na-ejikọta Theoremchem Dimeryl Diisocyanate n'ime usoro polymer pụrụ iche. Isi C36 hydrophobic pụrụ iche na-enye nchebe ka mma n'ofe ngalaba teknụzụ siri ike.
Mkpuchi Mmiri na Akpụkpọ Nchedo
Ndị na-emepụta ihe na-eji Theoremchem DDI arụ ọrụ dị elu nke na-egbochi mmiri. Agbụ C36 na-anaghị echebe ihe ndị e ji simenti, osisi, na ígwè mee ka mmiri ghara ịbanye n'ime ha. Nnyocha Ngwa nke DDI (Dimeryl Diisocyanate na-egosi mgbanwe pụrụ iche nke ihe nkiri na ikike ịgbawa mgbawa n'okpuru ọnọdụ ihu igwe na-agbanwe agbanwe.
Ihe mkpuchi mmiri na ihe mmịpụta mmiri dị n'okpuru mmiri
Gburugburu mmiri chọrọ iguzogide ihe ndị na-anaghị agbanwe agbanwe megide mmiri nnu na imikpu n'ime mmiri. Polyurethanes nke DDI na-enye ike nrapado siri ike ogologo oge n'elu mmiri mmiri na-enweghị mmiri kemịkalụ.
| Metric Arụmọrụ | Polyurethane ọkọlọtọ | Usoro DDI Polyurethane |
|---|---|---|
| Nkwụsi ike nke mmiri | Mbibi nke Mmiri | Iguzosi Ike n'Ezi Ihe Owuwu Zuru Ezu |
| Mgbakwunye dị n'okpuru ala | Ihe Ize Ndụ nke Ọnya Mmiri | Njikọ siri ike nke ihu |
Ndị injinia na-akọwapụta ihe mkpuchi ndị a na-adịgide adịgide maka ụgbọ mmiri, njikọ akụkụ ahụ, na njikọ pipeline ndị dị n'ime mmiri.
Ihe mkpuchi eletrọniki na ihe ndị e ji eme ite
Ihe ndị dị nro na eletriki chọrọ nchebe a pụrụ ịtụkwasị obi megide iru mmiri ikuku na nchara kemịkalụ. Ngwakọta ite polyurethane nke ejiri DDI mepụta na-ekewapụ obere sekit ndị dị nro nke ọma.
Uru dị mkpa: Ngwakọta ite DDI na-ejigide mkpuchi dielectric dị elu na ikike ikuku mmiri dị ala nke ukwuu, na-echebe eletrọniki dị nro megide sekit eletriki dị mkpụmkpụ.
Akpụkpọ anụ e ji akpụ akpụ na akpụkpọ anụ e ji akpụ akpụ mee nke na-eme ka mmiri ghara ịdị ọcha.
Ndị na-emepụta ákwà na-etinye ihe emulsions DDI mmiri iji mechaa ákwà teknụzụ dị elu na akpụkpọ anụ sịntetik. Ọgwụgwọ pụrụ iche a na-enye mmiri na-adịgide adịgide ma na-eme ka ákwà dị nro ma na-agbanwe agbanwe. Nnyocha ojiji nke DDI (Dimeryl Diisocyanate) na-egosi na ákwà e ji aka gwọọ na-anagide usoro ịsa ákwà ugboro ugboro n'efu n'enweghị ihe ọ bụla na-egbochi mmiri.
Usoro ozizi Dimeryl Diisocyanate (DDI) na-enye ngwọta kemịkalụ dị elu maka polyurethanes nke chọrọ mgbochi mmiri zuru oke na ogologo oge igwe. Ịtinye azụ C36 na-abụghị polar na-egbochi mmebi nhazi na gburugburu mmiri mmiri, mmiri, na eletrọnịkị. Ndị na-emepụta ihe na-emepụta ihe mkpuchi siri ike, ihe mkpuchi, na elastomers na-adịgide adịgide nke nwere ntụkwasị obi na-adịgide adịgide. Nnyocha Ngwa nke DDI (Dimeryl Diisocyanate na-egosipụta uru dị mkpa nke ihu igwe:
| Ụdị Uru | Uru Mbụ | Mkpa Ngwa |
|---|---|---|
| Ihu Igwe na Anya | Njirimara na-abụghị odo odo | Na-edobe iguzosi ike n'ezi ihe anya n'okpuru ìhè UV |
| Mgbochi Mmiri | Mmetụta mmiri dị ala | Na-egbochi mmebi n'ebe mmiri dị |
| Arụmọrụ Mekaniki | Ike na mgbanwe dị elu | Na-arapara nke ọma n'enweghị mgbawa elu |
| Ntachi Obi Gburugburu Ebe Obibi | Nnukwu kemịkalụ na iguzogide oyi | Na-anagide nrụgide anụ ahụ na nke okpomọkụ siri ike |
Ajụjụ Ndị A Na-ajụkarị
Kedu ka Theoremchem DDI si eme ka iguzogide mmiri polyurethane ka mma?
Usoro DDI nke Theoremchem nwere ogologo azụ hydrocarbon C36 na-abụghị polar. Nhazi hydrophobic a na-achụpụ molekul mmiri ma na-echebe njikọ kemịkalụ dị nro site na mgbawa hydrolytic.
Ndị na-emepụta ihe hà nwere ike iji Theoremchem DDI mee ihe n'èzí?
Ee. Nhazi aliphatic nke Theoremchem DDI na-egbochi foto-oxidation na odo n'okpuru anyanwụ. Ihe ndị e ji mee ihe na-eme ka ìhè dị elu, mgbanwe, na iguzogide ihu igwe ka oge na-aga.
Kedu polyols kacha mma na Theoremchem DDI?
Polyol ndị na-abụghị polar dị ka Polybutadiene nke a kwụsịrị na hydroxyl (HTPB) Jikọta nke ọma na Theoremchem DDI. Nchikota a na-eme ka polyurethanes nwee mmiri dị ala nke ukwuu ma nwee ike ịgbanwe agbanwe nke ọma.