Cov yam ntxwv tseem ceeb ntawm Nylon

Chemical Structure: Cov saw tseem ceeb molecular muaj cov pab pawg amide rov ua dua (–NHCO–), npaj los ntawm polycondensation ntawm diacid nrog diamine lossis los ntawm lub nplhaib - qhib polymerization ntawm lactam.

Hom Hom:
Nylon 6 (PA6): Ua los ntawm lub nplhaib- qhib polymerization ntawm ε-caprolactam, melting point txog 220-225 degree, siab dua noo noo nqus (saturated water absorption 7-9%).

Nylon 66 (PA66): Ua los ntawm polycondensation ntawm hexamethylenediamine nrog adipic acid, melting point txog 255-265 degree, qis noo noo nqus (li 3-4%), siab zog thiab rigidity.

Lub cev muaj zog:
Ceev: Txog 0.91–1.09 g / cm³, cais raws li lub teeb yuag engineering yas.

Melting Point: PA6 txog 220 degree, PA66 txog 255-265 degree.
Iav Hloov Kub Kub (Tg): 45-70℃.

Mechanical Properties:
Siab zog: Tensile zog 60-85 MPa, flexural zog 80-120 MPa.

High Toughness: Notched cuam tshuam lub zog mus txog 80-120 kJ / m².
Zoo hnav tsis kam: Tsis tshua muaj kev sib txhuam coefficient, haum rau cov iav, bearings, thiab lwm yam kev sib txhuam.

Moisture Absorption:
Vim lub polarity ntawm cov pab pawg amide, muaj zog noo noo nqus (PA6 saturated water absorption 7-9%, PA66 txog 3-4%), cuam tshuam qhov seem stability thiab hluav taws xob.

Thermal stability:
Thermal decomposition temperature >300 °C (PA66 can reach >350℃), tuaj yeem siv tau ntev -lub sijhawm ntawm 80-120 degree, cov qauv siv zog tuaj yeem ncav cuag 250℃.

Hluav taws xob rwb thaiv tsev: siab ntim resistivity (piv txwv li, PA66 ncav cuag 1.83 × 10¹⁵ Ω·cm), ua rau nws yog ib qho zoo heev insulating khoom.

Chemical Resistance:
Resistant rau roj, alkalis, thiab feem ntau cov kuab tshuaj organic; tsis resistant rau muaj zog acids (xws li, concentrated sulfuric acid tuaj yeem rhuav tshem cov amide daim ntawv cog lus).