Key Difference – Nylon 6 vs Nylon 66
Nylon 6 thiab nylon 66 yog cov nylon siv ntau tshaj plaws hauv ntiaj teb. Qhov sib txawv tseem ceeb ntawm nylon 6 thiab nylon 66 yog nylon 6 yog nylon monadic tau los ntawm diamine, thaum nylon 66 yog nylon dyadic tau los ntawm diamine thiab diacid.
Nylon yog hais txog txhua yam polymer uas los ntawm polyamides, uas muaj kev sib txuas ntawm cov pob txha hauv lawv cov pob txha polymer. Muaj ntau hom nylon fibers uas muaj ntau yam khoom nyob ntawm lawv daim ntawv thov. Feem ntau, cov yam ntxwv zoo tshaj plaws ntawm nylon fiber ntau yog lawv lub zog thiab lub teeb yuag. Tsis tas li ntawd, lawv muaj kev tiv thaiv zoo heev, tsis zoo li ntau lwm cov hluavtaws fibers. Nylon yog elastic heev thiab lawv thib ob tsuas yog spandex xov paj thiab roj hmab. Nylon yog resilient, ua rau nws resistant rau wrinkles. Cov luster ntawm nylon muab qhov zoo ib yam li paj rwb thiab ntaub plaub. Cov ntaub nylon nruj nreem yuav hnov lub teeb, tab sis nws ntxiab ya raws, huab cua, thiab cua sov. Yog li ntawd, nws yog qhov zoo tshaj plaws los ua fabrics ntawm umbrellas thiab raincoats. Kab thiab mildew tsis cuam tshuam rau nylon. Txawm li cas los xij, raug tshav ntuj tuaj yeem txo cov khoom ntawm nylon. Qee qhov teeb meem ntxiv ntawm nylon suav nrog kev nyiam ntawm lint thiab av thiab cov khoom zoo li qub. Cov ntaub ntawv tseem ceeb ntawm nylon suav nrog cov khoom siv hluav taws xob, kev lag luam tsheb, ntim khoom thiab lwm yam. Muaj ob hom nylon, uas yog; lub monaidic (-[RNHCO] n -), thiab dyadic (-[NHRNHCOR'COn]-). Hom nylon feem ntau yog luv li 'nylon x' lossis 'nylon xy', qhov twg x thiab y sawv cev rau cov pa roj carbon atoms hauv cov monomer uas lawv tau ua ke.
Nylon 6 yog dab tsi?
Nylon 6 yog ib qho tseem ceeb tshaj plaws monadic nylons feem ntau yog siv los ua fiber ntau ua polymer thiab ua cov yas engineering. Nylon 6 yog synthesized los ntawm yaj polymerization ntawm Ɛ-aminocaproic acid los yog Ɛ- caprolactam. Nylon 6 absorbs noo noo mus rau ib qho twg, thiab Tg (iav hloov kub) ntawm nylon 6 yog txo nrog nce noo noo.
Daim duab 01: Nylon 6 thiab Nylon 66
Zig-zag molecular conformation thiab anti-parallel kev npaj ntawm Nylon 6 chains ua rau ntau hydrogen bonds ntawm amide pawg. Lub tensile zog ntawm Nylon 6 kuj txo nrog nce noo noo cov ntsiab lus. Lub tenacity ntawm fibers tuaj yeem txhim kho los ntawm yaj spun thiab kub daim duab ntawm fibers. Thaum piv nrog nylon 66, nylon 6 muaj kev cuam tshuam lub zog. Cam khwb cia nylon 6 yog siv los tsim lub zog khawm thiab bearings, roj tso tsheb hlau luam, lub tsev kaw, thiab ntau qhov chaw ntawm cov ntawv tsim cov tshuab thiab cov cuab yeej siv. Fiberglass reinforced nylon 6 resins yog siv los tsim tsheb radiator shrouds, cua ducts, cov khoom siv, roj hlwb, thiab reservoir.
Nylon 66 yog dab tsi?
Nylon 66 yog cov nylon dyadic ua los ntawm cov kub kub yaj polymerization ntawm adipic acid thiab hexamethylenediamine. Nylon 66 yog ib qho tseem ceeb tshaj plaws thiab siv tau nylons hauv ntiaj teb, vim muaj qhov sib npaug ntawm cov khoom thiab tus nqi qis. Lub melting point ntawm nylon 66 yog nyob ib ncig ntawm 260-265 ° C thiab T gyog li 50 ° C thaum qhuav. Zoo ib yam li nylon 6, nylon 66 muaj zig-zag saw conformation, uas ua rau intramolecular hydrogen bonds. Iav-fiber ntim nylon 66 muaj qhov tshwj xeeb nruj thiab tawv uas ua rau nws siv tau rau hauv cov ntawv thov xws li molded industrial xyaum thiab cov khoom siv hauv tsev. Lub zog tensile ntawm nylon 66 yog ntau dua li ntawm nylon 6. Cov ntawv thov ntawm molded nylon 66 muaj xws li cov nyom mower blades, tsheb laij teb hood extensions, tsheb kauj vab log, skate log, skis rau snowmobiles, bearings, hluav taws xob sib txuas, thiab maus taus crankcases. Nylon 66 fibers yog siv rau hauv cov khaub ncaws, ntaub thiab ntaub pua plag kev lag luam.
Qhov txawv ntawm Nylon 6 thiab Nylon 66 yog dab tsi?
Nylon 6 vs Nylon 66 |
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| Nylon 6 yog nylon monadic muab los ntawm Ɛ-aminocaproic acid lossis Ɛ- caprolactam | Nylon 66 yog nylon dyadic muab tau los ntawm adiapic acid thiab hexamethylenediamine |
| tshuaj npe | |
| poly-(6-aminocarproic acid) | poly-[imino-(1, 6-dioxohexamethylene)iminohexamethylene |
| tshuaj formula | |
| -(-NH-(CH2)5-CO-)- | -(NH-(CH2)6-NH-CO-(CH2)4-CO-)- |
| Crystalline Melting Point | |
| Crystalline melting point yog 225 °C. | Crystalline melting point yog 265 °C. |
| Ib puag ncig lub zog (Izod: cm-N / cm of notch) | |
| 160 | 80 |
| Density | |
| 1.15 g/mL | 1.2 g/mL |
| Recyclability | |
| Nylon 6 tuaj yeem siv tau ntau zaus dua li nylon 66. | Nylon 66 tsis yog siv tau zoo li nylon 6. |
| Tensile Strength | |
| 6.2 x 104 kPa | 8.3 x 104kPa |
Summary – Nylon 6 vs Nylon 66
Nylon 6 thiab nylon 66 yog cov tseem ceeb tshaj plaws thiab siv dav siv polyamides. Nylon 6 yog nylon monadic muab los ntawm Ɛ-aminocaproic acid lossis Ɛ- caprolactam, hos nylon 66 yog nylon dyadic muab tau los ntawm adipic acid thiab hexamethylenediamine. Qhov no yog qhov sib txawv tseem ceeb ntawm Nylon 6 thiab Nylon 66. Ob hom muaj qhov tawv thiab tawv, yog li siv los ua engineering plastics hauv ntau daim ntawv thov kev lag luam.
