Polyamide (PA) e na le sebopeho se phahameng sa lipalesa se tsoang ho lactive acid, e nang le mafura a nang le mafura, e nang le mesifa ea moea (-nh) ka ketane e kholo. Poltamide ke eona e thata ea kristalant e tšoeu kapa e tšoeu ea mongobo ea policalar ea polical. , boitšetso, ho monya mokhalli le khang ea oli, ho hanyetsa ha Alkali, ho ikhula ha motlakase, ho daela mafutsana, clarility e ntle. Moelelo o motle, mmala o fokolang. Bothata ke hore monyaluoa oa ho monya metsi o moholo, o ama tsitsipano ea likarolo le motlakase. Matlafatsoa ka fiber li ka fokotsa ho amohela tlhokomelo ea metsi, e le hore e ka sebetsa ka mocheso o phahameng le maemong a phahameng a mongobo.
1. thepa ea li-polymam tse sebelisoang hangata
Pa6, pa66, pa11, pa11, pa111, PA60 % ea tlhahiso ea polyamide. Sebopeho sa lik'hemik'hale tsa lihlahla tse fapaneng li fapane, 'me le tsona li fapane. Lethathamo la 1-1 le thathamisa lintho tsa tse ling tse sebelisoang hangata.
Melemo ea polilymative e tloaelehileng
| Ts'ebetso | Yuniti | Pa6 | Pa66 | Pa11 | Pa12 | Pa610 | Pa612 | Pa1010 |
| Letsoalo | g / cm3 | 1.14 | 1.14 | 1.04 | 1.02 | 1.08 | 1.07 | 1.03 ~ 1.05 |
| Ntlha ea ho qhibiliha | ℃ | 220 | 260 | 187 | 178 | 215 | 210 | 200 ~ 210 |
| Shrinking shrinkhge | % | 0.6 ~ 1.6 | 0.8 ~ 1.5 | 1.0 ~ 1.5 | ||||
| Matla a tšepe | Mpa | 74.0 | 80.0 | 55 | 50 | 56.8 | 62 | 50 ~ 60 60 |
| Emplation | % | 200 | 60 | 300 | 350 | 200 | 200 | 200 |
| Matla a hoba | Mpa | 111 | 127 | 67.6 | 72.5 | 93.1 | 89 | 80 ~ 89 |
| Feto-fetoha le maemo a feto-fetoha ha elasticity | GPA | 2.5 | 3.0 | 1.0 | 1.1 | 1.96 | 2.0 | 1.3 |
| Manyatsi a canilever a kentsoe matla a tšusumetso | J / m | 56 | 40 | 39.2 | 50 | 56 | 54 | 40 ~ 50 |
| RICKEDLDESD | R | 114 | 118 | 108 | 106 | 116 | 114 | |
| Mocheso o potlakileng oa mocheso (1.82PMA) | ℃ | 63 | 70 | 55 | 55 | 60 | 60 | |
| Mocheso oa mocheso (0.45PMA) | ℃ | 150 | 180 | 155 | 150 | 150 | ||
| Semereiti ea ka kotloloho | 10-5 / ℃ | 8.0 | 9.0 | 11 | 11.2 | 10.0 | ||
| Ho Sebelisana le Pherekano | W / (m. ℃) | 0.19 | 0.34 | 0.29 | 0.23 | 0.22 | ||
| Flame Restdast | Ul94 | V-2 | V-2 | |||||
| Ho Nchafatsa Metsi | 24H,% | 1.8 | 1.3 | 0.30 | 0.25 | 0.5 | 0.4 | 0.39 |
Melemo ea 2.Mochanical
Setšoantšo sa molek'hule sa polyamide se na le lihlopha tsa mahaeng tsa Pola, li ka theha setsi sa hydrojen, Crystallity, ka hona e na le matla le matla a mangata. Ka keketseho ea takatso ea sehlopha sa sehlopha, li-crain tsa li-molecular le crystarity, matla a eona a eketseha; Ka keketseho ea sehlopha sa methyl sengoathoana sa polyamide, matla a mochini o fokotseha, ha matla a tšusumetso a eketseha butle butle. Kenyelletso ea lihlopha tsa li-aryl li-chain tsa polyamide li eketsa matla ka lebaka la keketseho ea matla a bolotsana le keketseho ea matla (mohlala, majoe a limolek'hule. Har'a poliomavides, PA66 e na le thata ka ho fetisisa le ho ba thata, empa ho thata ho ba le mathata a mangata ka ho fetisisa. Mefuta eohle ea polyamide ho latela boemo bo boholo ba ho ba thata: PA66 <PA11 <PA11 <Pa1010 <Pa610. Poltamide Crystay, e na le tšusumetso e kholo liphokotsong tsa mochini, matla a teteaneng, matla a ho teba, ho eketseha ka ho teba ho na le keketseho ea kristasta le ntlafatso. Sehlopha sa Moodemi setulong se ka sehloohong sa molek'hule ea polyamide ke sehlopha sa poldrophilic, se etsang hore polyamie e be le monyaluoa oa metsi. Ho monya metsi ho na le tšusumetso e kholo ho thepa ea polyamide, kamora ho monya matla le ho kenyelletsa matla a mangata, ha matla a tšusumetso a atoloha haholo, Bona Lethathamo la 2-1.
Phello ea ho monya metsi a polymide ka matla
Lebitso la polyamide Matla a ho robeha / MPA Sekhahla sa nako ea nako ea nako /% Matla a Floaxural / MPA Feto-fetoha le Modululus ea Elaysticity / GPA Manyatsi a canilever a hlobaeba ka matla / j / m Pa6 (3,5% Attorption) 50 ~ 55 (75) 270 ~ 290 (150) Pa66 (sekhahla sa ho monya metsi a 3.5%) 58 (83) 270 (60) Pa46 (sekhahla sa ho monya metsi a 3.5%) 60 (100) 200 (40) Pamxd-6 (3.5% ea ho monya metsi) 76 (85) > 10 (2.0)
3. Matla a motlakase
Polyamide e na le thepa e ntle ea motlakase, tafole ea 3-1 e thathamisa mefuta ea motlakase ea polyamide. Le ha polyamide e na le thepa ea motlakase e ntle ea motlakase, e na le lihlopha tsa meeli ea Polar le kamelong e kholo ea molek'hule ebile ke polymer ea nang le metsi moeeng. Ha sekhahla sa ho monya metsi a eketseha, ho hanyetsa molumo oa bophahamo le ho etsa joalo-puo ea polyamide, ho etsa boenjiniere ba polasetiki bakeng sa mosebetsi oa mantlha le metsi.
4. LITLHAKISO TSA BOPHELO
Polelo e menyesang ea mefuta e fapaneng ea polting e fapana haholo, ntlha e phahameng ka ho fetisisa e qhibiliha ke Paul6, ho fihlela ho 295 ℃. Polyamide e na le mefuta e mengata ea lithemparetjha tse sebetsang, ka kakaretso ho tloha ka 100 ° C. Mocheso oa mocheso oa mocheso oa polyamide o its'epahalla ka matla mojaro. Mocheso o potlakileng oa mocheso oa poliotsoana o amana haholo le mojaro oo ba o amanang ka potlako, mme o fokotseha ka potlako ka mojaro o ntseng o eketseha. Taolo ea Khatholi ea Lifate tsa Polidamide ha li fapana haholo, joalo ka ha ho bontšitsoe tafoleng ea 1-1. Ho bontšoa mocheso oa tšenyo ea polistamate e fapaneng ho Lethathamo 4-1. Mocheso oa ho kopana le Pa6 le Pa66 ho joalo, ha a ntse a le holimo le a pa11 ke eona e phahameng ka ho fetisisa.
5. Mefuta ea lik'hemik'hale
Polmamide e tsitsitse ho bakoallo ba lik'hemik'hale, haholo ho peteroneng, haholo libripine le oli tse ling, ke khetho ea pele ea lisebelisoa tsa mela ea peō ea likoloi. Leha ho le joalo, e qhibiliha ho Vonol, e harelaneng ka hare ho Tebol, e hlophisitsoeng ka mocheso oa kamore, le calcium glycol, profinol clocole, profitlici acid le fluoroot ka mocheso o phahameng. Ka kakaretso, polasetiki e ngata ea polyamide e tsitsitse tharollo ea alkaline, empa ho nyenyefatsa kapa ho nyenyefatsa ho etsahala mocheso o phahameng, haholoholo ha polyamide e qhibilihile; Tlas'a maemo ana, acidganic aticacic acid, haholo-holo acid e acid e ka tiisa le ho senya polmamide ka potlako, 'me qetellong e hlahisa monomer ea polyamide. Poliyamides e theotsoe litšila tse futhumatsang mochesong o phahameng. Ntle le ho senya mocheso, ho sithabela ho oxidation ho etsahala ha polyamide e futhumatsoa moeeng. Mohlala, PA66 e ba Brittle kamora kalafo ka kalafo e 250 ° C bakeng sa 2h kapa 70 ° C bakeng sa 2h kapa 70 ° C bakeng sa 2h kapa 70 ° C bakeng sa 2h kapa 70 ° C bakeng sa lilemo tse peli. Ka tloaelo, khafetsa ts'ebetsong ea lihlahisoa tsa polyamide, eketsa li-antioxidants ho thibela ho pharalla ha axidian. Polyamide ka leseling, ka lebaka la radiation ea ultraviolet, e tla boela e hlaphoheloa ka setšoantšo kapa botsofali. Polymide e na le sehlopha sa Carbonyl, se ka monya leseli la bolebe le khanya ea letsatsi, ha ho na litšila ho H2, CO LE HYDROCKITEN. UV e akhotla le ho sitisa ba ha bobebe ba caperaned ba ka eketsoa ho ntlafatsa ho tsitsa ke polyamides.
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