Inkcazo ecacileyo yeempawu zerabha ye-nitrile
I-rubber ye-Nitrile i-copolymer ye-butadiene kunye ne-acrylonitrile, kunye nomxholo wayo odibeneyo we-acrylonitrile unempembelelo ebalulekileyo kwiimpawu zayo zokwenza izinto, iimpawu zokubambelela, kunye nokumelana nokushisa. Ngokweempawu ze-butadiene kunye ne-acrylonitrile monomers, i-butadiene ine-polarity ebuthakathaka, ngelixa i-acrylonitrile ine-polarity enamandla. Ngoko ke, umxholo we-acrylonitrile kwikhonkco eliphambili le-rubber ye-nitrile, ngakumbi ukuguquguquka kwekhonkco eliphambili. Okukhona iqondo lobushushu eliphantsi brittleness lobushushu, kokukhona iqondo eliphantsi ukumelana nobushushu ukusebenza; Kwelinye icala, i-acrylonitrile inokumelana nobushushu obuhle kuba ngexesha lenkqubo yokufudumeza, i-acrylonitrile kwirabha ye-nitrile inokuvelisa izinto ezinyibilikayo zotywala ukuthintela ukuthotywa kwe-thermal oxidative. Ngoko ke, ukuchasana nokushisa kwerubha ye-nitrile kwanda ngokunyuka komxholo we-acrylonitrile; Okwangoku, ngenxa ye-polarity factor ye-acrylonitrile, ukwandisa umxholo we-acrylonitrile kunokuphucula amandla okunamathela kwi-rubber ye-nitrile. Ngoko ke, kubaluleke kakhulu ukuvavanya umxholo we-acrylonitrile eboshiweyo kwirubha ye-nitrile.
Umxholo we-acrylonitrile unempembelelo enkulu ekusebenzeni kwe-NBR. Umxholo we-acrylonitrile werubha ye-acrylonitrile nitrile jikelele iphakathi kwe-15% kunye ne-50%. Ukuba umxholo we-acrylonitrile uyanda ukuya kwi-60%, uya kuba nzima, ufana nesikhumba, kwaye awusenampahla yerubha.
1. Ukuxhathisa i-oyile kunye nokumelana ne-solvent: I-rubber ye-Nitrile inokumelana ne-oyile kwirabha eqhelekileyo. Irabha ye-nitrile imelana kakhulu ne-oyile esekwe kwi-petroleum, benzene, kunye nezinye izinyibilikisi ezingezizo ezipolar kunerabha yendalo, irabha ye-styrene butadiene, irabha ye-butyl, kunye nezinye iirubha ezingezizo ezipolar, kodwa ikwangcono kune-polar chlorinated rubber. Nangona kunjalo, irabha ye-nitrile ayixhathisi kakuhle kwi-oyile ye-polar kunye ne-solvents (efana ne-ethanol), kodwa ukuxhathisa okungahambi kakuhle kwirabha engekho kwi-polar.
2. Iimpawu zokusebenza komzimba: I-rubber ye-Nitrile iyisakhiwo esingaqhelekanga se-nitrile copolymers engabonakali phantsi koxinzelelo. Ke ngoko, iipropathi ezibonakalayo kunye nezomatshini zerabha ecocekileyo ye-nitrile yerabha evulziweyo ziyafana nezo zerabha ye-nitrile ye-styrene, esezantsi kakhulu kunerabha yendalo. Emva kokongeza izihluzi eziqinisayo ezifana nekhabhoni emnyama kunye ne-phenolic resin, amandla okuqina erabha ene-nitrile enomlilo anokufikelela kwinqanaba lerabha yendalo, ihlala ijikeleze i-24.50mpa. Njengoko umxholo we-polarity we-NBR ukhula, ukuguquguquka kwekhonkco ye-macromolecular kuncipha, amandla e-athomu phakathi kweeathomu ayanda, amabhondi aphindwe kabini ayancipha, kwaye ikhonkco ye-macromolecular ayinayo i-unsaturated, okubangelwa uchungechunge lweenguqu zokusebenza. Xa umxholo we-ACN uphakathi kwe-35% kunye ne-40%, yindawo ebalulekileyo yokuguqulwa koxinzelelo, ukuqina, kunye nobunzima kwi-75 ℃. Ukuba ukuchasana kweoli kuhlangabezana neemfuno, iintlobo nge-ACN ngaphantsi kwe-40% kufuneka zisetyenziswe kangangoko kunokwenzeka. I-elasticity yerabha ye-nitrile incinci kunerabha yendalo kunye ne-styrene butadiene rubber. I-elasticity ye-NBR inxulumene ngokusondeleyo nobushushu. Xa kuthelekiswa ne-NBR, ukubakho kobushushu kunye nokunyuka kwe-elasticity kukhulu. Ke ngoko, irabha ye-nitrile ifaneleke kakhulu ukwenza i-absorbers ezothusayo ezinokumelana neoyile ephezulu. Iimpawu ze-elasticity yerabha ye-nitrile eguqukayo kunye nokubopha i-acrylonitrile
3. Ukuphefumla: I-rubber ye-Nitrile inobunzima bomoya obungcono kune-rubber yendalo kunye ne-styrene butadiene irabha, kodwa ayilungile njengerabha ye-polysulfide, efana ne-rubber ye-butyl.
4. Ukusebenza kobushushu obuphantsi: Irabha ye-Nitrile inomgangatho ophantsi wobushushu obuphantsi kwirubha jikelele. Ukusebenza kweqondo lokushisa eliphantsi kuhambelana nomxholo we-acrylonitrile, kwaye iqondo lokushisa lokutshintsha kweglasi liyenyuka ngokunyuka komxholo we-acrylonitrile. Inokunciphisa ubushushu beglasi yokutshintsha kwerabha ye-nitrile kwaye iphucule ukusebenza kwayo okuphantsi kobushushu.
5. Ukumelana nokushisa: Irabha ye-Nitrile inokumelana nokushisa okungcono kunerubha yendalo kunye ne-styrene butadiene irabha. Ngokukhetha ifomula efanelekileyo, iimveliso zerabha ze-nitrile zingasetyenziswa ngokuqhubekayo kwi-120 ℃; Iyakwazi ukumelana neoli eshushu kwi-150 ℃; Emva kokungena kwi-oyile kwi-191 ℃ iiyure ezingama-70, isenamandla okugoba. 6. Ukumelana ne-ozone: Irabha ye-Nitrile inoxhathiso olubi lwe-ozone kwaye ngokubanzi iphuculwa ngokongeza i-ozone resistant agents. Nangona kunjalo, iimveliso ezidibana neoli ngexesha lokusetyenziswa ziyakwazi ukususa i-agent echasene ne-ozone kunye nokulahlekelwa ukuchasana kwe-ozone. Idityaniswe nePVC, umphumo ubalulekile.
7. Ukumelana namanzi: Irabha ye-Nitrile inokumelana nokungcono kwamanzi. Ukuphakama komxholo we-acrylonitrile, ngcono ukuchasana kwamanzi.
8. Ukusebenza kwe-insulation yombane: I-rubber ye-Nitrile inokusebenza okungahambi kakuhle kombane ngenxa ye-polarity yayo. Yeyerabha ye-semiconductor kwaye akufuneki isetyenziswe njengemathiriyeli yokugquma.
9. Ukuchasana nokuguga: I-NBR ngaphandle kwe-agent anti-aging ine-anti-aging resistance, ngelixa i-NBR ene-anti-aging agents inokuguga okungcono kunye nokumelana nobushushu kunerabha yendalo. Emva kokuguga kwe-oxidative ye-thermal, amandla okuqina erabha yendalo ayancipha kakhulu, kodwa ukwehla kwerabha ye-nitrile ngokwenene kuncinci kakhulu.
Ukumelana nokushisa kwerabha ye-nitrile kufana nokumelana nokuguga. Xa ubudala be-L0000H kwi-100 ℃, ubude bayo busengadlula i-100%. Iimveliso zerabha ze-Nitrile zingasetyenziselwa ixesha elifutshane kwi-130 ° C kwaye zingasetyenziselwa kumaqondo aphezulu ngaphandle kwe-oxygen. Ke ngoko, irabha ye-nitrile inokumelana nobushushu obungcono kunerabha yendalo kunye nerabha ye-styrene butadiene. Nangaphezulu kwerabha yeklororene. Irabha ye-Nitrile inesimo sezulu esifanayo kunye nokumelana ne-ozone njengerabha yendalo, kodwa iphantsi kancinci kunerubha yendalo. Ukongeza i-polyvinyl chloride kwirabha ye-nitrile inokuphucula ukuxhathisa kwemozulu kunye nokuchasana kwe-ozone.
10. Ukumelana nemitha:
Irabha ye-Nitrile nayo inokonakala phantsi kwemitha yenyukliya, ekhokelela ekwandeni kobulukhuni kunye nokuncipha kobude. Nangona kunjalo, xa kuthelekiswa nezinye iirubha zokwenziwa, i-NBR ayichatshazelwa kangako yimitha, kwaye i-NBR enomxholo we-acrylonitrile we-33% -38% inokumelana nemitha elungileyo. Emva kwemitha yenyukliya, amandla okuqina e-NBR anomxholo ophezulu we-acrylonitrile anokongezwa nge-140%. Oku kungenxa yokuba i-NBR enomxholo ophantsi we-acrylonitrile iya kuthotywa phantsi kwemitha yemitha, ngelixa i-NBR enomxholo ophezulu we-acrylonitrile iya kusabela kwi-crosslinking reaction phantsi kwemitha yenyukliya.
Itheyibhile yokuSebenza yeNitrile Rubber
| isishwankathelo | uphawu | injongo |
| I-copolymer efunyenwe nge-polymerization ye-lotion ye-butadiene kunye ne-acrylonitrile ibizwa ngokuba yi-butadiene acrylonitrile rubber, okanye i-nitrile irabha emfutshane. Umxholo walo luphawu olubalulekileyo oluchaphazela iipropati zerubha ye-nitrile. Kwaye yaziwa ngokugqwesa kwayo ukumelana neoyile. | Ukuchasana kweoli kuyona nto ingcono, kwaye ayidumbanga kwi-polar kunye ne-polar ebuthakathaka i-oyile.Ubushushu kunye nokusebenza kwe-oksijini yokuguga kungcono kuneerubha eziqhelekileyo ezifana nendalo kunye ne-butadiene styrene. Inokumelana nokunxiba kakuhle, kunye nokumelana nokunxiba i-30% -45% ephezulu kunerubha yendalo. Ukumelana nokutyiwa kweekhemikhali kungcono kunerabha yendalo, kodwa ukuxhathisa kwayo kwiiasidi ezinamandla ze-oxidizing kubi. I-elasticity engalunganga, ukumelana nokubanda, ukuguquguquka okuguquguqukayo, ukuxhathisa ukukrazula, kunye nokuveliswa kobushushu obuphezulu ngenxa yokuguquka. Ukusebenza kakubi kokufakelwa kombane, eyerubha ye-semiconductor, ayifanelekanga ukusetyenziswa njengesixhobo sokugquma umbane. Ukunganyangeki kwe-ozone. Ukusebenza kakubi. | Isetyenziselwa ukwenza imibhobho yerabha, iirola zerabha, iigasket ezitywinayo, iintambo zetanki, iilayini zetanki zamafutha eenqwelo-moya, kunye neepokotho ze-oyile ezinkulu ezidibana ne-oyile.Inokwenza amabhanti okuhambisa ukuthutha izinto ezishushu. |
Iimpawu zezinto ezisetyenziswa ngokuqhelekileyo irabha yokwenziwa
| Igama lerabha | Ushunqulelo | Uluhlu lokuqina (HA) | Ubushushu bokusebenza (℃) |
| Irabha yeNitrile | NBR | 40-95 | -55~135 |
| Irabha ye-nitrile ene-hydrogen | HNBR | 50-90 | -55 ~ 150 |
| I-Fluororubber | FKM | 50-95 | -40 ~ 250 |
| Irabha ye-ethylene propylene | EPDM | 40-90 | -55 ~ 150 |
| irabha ye-silicon | VMQ | 30-90 | -100~275 |
| Irabha yeFluorosilicone | FVMQ | 45-80 | -60 ~ 232 |
| Irabha yeChloroprene | CR | 35-90 | -40 ~ 125 |
| Irabha yePolyacrylate | I-ACM | 45-80 | -25 ~ 175 |
| i-polyurethane | I-AU/EU | 65-95 | -80~100 |
| Irabha yePerfluoroether | I-FFKM | 75-90 | -25~320 |
Ixesha lokuposa: Apr-07-2024
