Kev taw qhia txog polyamid pa6
Polyamide, hu ua polyamide pa luv luv, feem ntau hu ua nylon.Nws yog ib hom crystalline thermoplastic yas tsim los ntawm polymerization ntawm binary amines thiab diacid los yog lactam.Muaj ntau hom PA, raws li tus naj npawb ntawm cov pa roj carbon atom hauv cov monomer koom nrog cov tshuaj tiv thaiv polymerization, thiab ntau hom PA nrog cov kev ua tau zoo sib txawv tuaj yeem tsim, xws li PA6, PA66, PA612, PA1010, PA11, PA12, PA46 , PA9, PA1212, thiab lwm yam. PA6 thiab PA66 feem ntau yog siv, suav txog 90% ntawm tag nrho cov khoom.
Cov yam ntxwv ntawm polyamid pa6
Polyamid pa6 muaj cov polarity, uas tsis yog-tshuaj lom, saj tsis qab thiab yooj yim rau xim; Crystalline hom (50 mus rau 60%), translucent milky dawb los yog lub teeb daj granule; Newtonian kua (Newtonian kua xa mus rau cov kua uas qhov kev nyuaj siab yog proportional rau Tus nqi strain); Qhov ntom: 1.02 txog 1.20g / cm³; Kev nqus dej siab, cov tshuaj tiv thaiv hydrolysis yuav tshwm sim ntawm 230 degrees Celsius; Kev nqus dej PA46> PA6> PA66> PA1010> PA11> PA12> PA1212; Loj shrinkage.PP, PE > PA > PS, ABS.Medium barrier khoom thiab muaj zog barrier rau huab cua.
Mechanical zog ntawm polyamid pa6
Cov khoom siv kho tshuab ntawm polyamid pa6 feem ntau cuam tshuam nrog crystallinity: qhov siab dua crystallinity, lub zog siab dua thiab muaj zog dua qhov rigidity.Nyob rau hauv cov nqe lus ntawm lub zog, PC> PA66> PA6> POM> ABS.Strength yog heev cuam tshuam los ntawm hygroscopicity, qhov kub thiab txias, siab dua lub hygroscopicity, lub zog tensile thiab lwm yam khoom.
Qhov cuam tshuam toughness cuam tshuam zoo heev los ntawm kev ua haujlwm hygroscopic.Nrog rau qhov nce ntawm qhov kub thiab txias, cov dej nqus dej nce ntxiv thiab cov toughness nce.(Feem ntau, toughness yog tsis zoo nyob rau hauv ib tug qhuav lub xeev thiab tsis kub, thiab nws yuav muaj kev ntxhov siab tawg nrog cov khoom hlau thiab lub nkig tawg ntawm 0 ℃.
Polyamid pa6 muaj qhov zoo ntawm tus kheej lubricity thiab zoo hnav tsis kam.
Zoo heev tiv taus roj, eg.roj av.
Lub zog qaug zog yog siab, feem ntau 20% mus rau 30% ntawm lub zog tensile.Lub zog qaug zog ntawm PA6 thiab PA66 tuaj yeem ncav cuag li 22MPa, thib ob tsuas yog POM (35MPa) thiab siab dua PC (10-14MPa).Cov kab ke ntawm lub zog qaug zog: POM > PBT, PET > PA66 > PA6 > PC > PSF > PP.
Siab hardness, PA66: 108 txog 120HRR;PA 6120 HRR.
Tsis zoo Creep kuj: Zoo dua PP thiab PE, thiab phem dua li ABS thiab POM.
Kev ntxhov siab tsis zoo tawg tsis kam: Annealing lossis humidification kho yuav tsum tau ua tom qab ua cov khoom.
Post lub sij hawm: Feb-21-2022