Tshawb Pom Lub Ntiaj Teb Ntawm PA Plastics Thiab Nws Daim Ntawv Thov

1. PA Plastic yog dab tsi?

PA, tseem hu ua Polyamide, yog ib hom thermoplastic nrog cov qauv molecular tshwj xeeb featuring rov qab amide linkages. Nws yog ib qho ntawm feem ntau siv engineering plastics, renowned rau nws exceptional txhua yam khoom thiab versatility.

PA nthuav tawm lub zog siab, txhav, thiab ua haujlwm zoo heev. Qhov tseem ceeb, nws tuaj yeem ua haujlwm tau zoo tshaj qhov kub ntau, los ntawm -40℃txog 110 degree, yam tsis muaj kev cuam tshuam nws cov qauv kev ncaj ncees lossis kev ua haujlwm. Tsis tas li ntawd, PA yog ib qho yooj yim rau txheej txheem, muaj qhov siab -gloss tiav, tsis muaj tshuaj lom, thiab tuaj yeem ua xim yooj yim.

Chemically, PA muaj cov saw hlau ntev ntev uas muaj cov pab pawg amide (N-H-C=O). PA yog synthesized los ntawm ib tug polymerization cov tshuaj tiv thaiv ntawm ib tug acid thiab ib tug amine. Ib qho piv txwv tseem ceeb yog PA66, tsim los ntawm cov tshuaj tiv thaiv ntawm adipic acid thiab hexamethylenediamine.

Nyob rau hauv cov nqe lus ntawm kev tsim, PA feem ntau yog tsim nyob rau hauv daim ntawv ntawm cov nplooj ntawv los yog rods, ua kom yooj yim ua thiab fabrication rau hauv kev cai cov khoom kom tau raws li cov neeg siv cov kev cai.

1.1 PA Cov txheej txheem tsim khoom yas

Muaj ob txoj hauv kev rau kev sib xyaw PA plastics:

Polycondensation:Qhov no suav nrog cov tshuaj tiv thaiv ntawm dicarboxylic acid thiab diamine, ua rau PA hom nrog cov saw ntev, xws li PA66, PA69, thiab PA610. Piv txwv li, PA66 yog tsim los ntawm hexamethylenediamine thiab adipic acid.

Ntiv- qhib Polymerization:Cov txheej txheem no suav nrog lub nplhaib- qhib lub lactam (ib hom amino acid), tsim PA hom xws li PA6 thiab PA12. Txoj kev no yog qhov yooj yim dua thiab tus nqi ntau dua - siv tau, yielding high -viscosity PA daws.

1.2 Molecular Structure ntawm PA Plastics

Cov qauv molecular ntawm PA plastics ncaj qha cuam tshuam cov khoom siv:

Hydrogen bonding ceev: cuam tshuam crystallinity.

Hydrogen kev sib txuas ntawm cov pab pawg amide: Pab txhawb rau cov neeg kho tshuab siab.

Carbon chain length: Influences melting point thiab dej nqus.

2. Hom PA Plastics ntawm Kev Ua Lag Luam

Ntau hom PA muaj nyob hauv khw, suav nrog PA6, PA66, PA12, thiab qib PA tshwj xeeb. Txhua hom muaj cov khoom sib txawv ntawm lub cev tsim nyog rau cov ntawv thov tshwj xeeb:

2.1. PA6 (nylon 6)

Synthesized los ntawm caprolactam, PA6 nthuav tawm:

Tensile zog: 70-85 MPa

Siab hardness: 78-80 Ntug D

Melting point: 220 degree

PA6 yog siv nyob rau hauv fiber ntau lawm, iav manufacturing, bearings, thiab hluav taws xob khoom vaj tse nyob.

2.2. PA66 (Nylon 66)

Synthesized los ntawm hexamethylenediamine thiab adipic acid, PA66 pov thawj:

Tensile zog: 75-90 MPa

Melting point: 260 degree

Siab hardness dua PA6: 82-85 Shore D

PA66 yog siv rau hauv cov khoom siv tsheb, cov khoom siv hluav taws xob hauv tsev, thiab cov hlua siv.

2.3. PA12 (Nylon 12)

Synthesized los ntawm laurolactam, PA12 pov thawj:

Cov tshuaj tiv thaiv zoo heev

Zoo dimension stability

Kev nqus dej tsawg tshaj plaws ntawm PA hom

PA12 yog siv rau hauv tsheb roj kab, fiber ntau optic txheej, thiab cov khoom siv.

2.4 Tshwj xeeb PA Hom

PIB 46:Nrog lub siab melting point ntawm 295 degree, nws yog haum rau daim ntaub ntawv uas yuav tsum tau kub kub kuj.

PIB 612:Qhov sib npaug ntawm PA6 thiab PA12, zoo tagnrho rau cov ntawv thov kom muaj zog thiab ruaj khov.

3. Qhov zoo ntawm PA Plastics

PA plastics tau txais kev ntseeg siab los ntawm cov neeg siv khoom vim lawv muaj ntau yam zoo:

3.1. Mechanical Properties

High deg hardness: Ntug D hardness ntawm 70-85

Kev puas tsuaj zoo heev: Tsawg coefficient ntawm kev sib txhuam (0.2-0.3)

Kev tiv thaiv siab thiab cuam tshuam: Tensile zog ntawm 70-90 MPa; elongation ntawm so ntawm 20-300%

3.2. Thaum tshav kub kub Resistance

Siab melting point: PA6 220℃; PA66 260℃; PA 46 295 degree

Kev ua haujlwm ruaj khov tshaj qhov kub ntawm qhov dav: Kev ua haujlwm tsis tu ncua ntawm -40℃txog 120 degree; Lub sij hawm luv luv ua haujlwm kub txog 180 degree

3.3. Chemical Properties

Kev nyab xeeb zaub mov: Tsis yog - lom; tsis hnov ​​​​mob nrog zaub mov

Corrosion kuj: Resistant rau ntau yam tshuaj; tsawg resistant rau muaj zog acids

Organic hnyav tsis kam: Resistant rau roj, roj, thiab roj; zoo tiv thaiv hydrocarbons

Vim qhov kev sib xyaw ua ke ntawm lub zog siab, kev rwb thaiv tsev zoo heev, thiab cov khoom siv tshuaj lom neeg ruaj khov, PA plastics tau dhau los ua cov khoom siv rau kev tsim khoom thiab cov khoom siv tshuab hauv ntau yam khoom siv.

4. Kev siv ntawm PA Plastics

PA plastics pom dav siv hauv ntau qhov kev lag luam:

Automotive:Kev tsim cov khoom siv cav, roj tshuab, thiab cable coatings.

Textiles:Kev tsim cov fibers, tsoos tsho accessories, thiab industrial siv.

Hluav taws xob thiab Electronics:Kev tsim cov khoom vaj tse, cov khoom siv hluav taws xob rwb thaiv tsev, thiab cov cua sov-cov khoom tiv taus.

Kev lag luam zaub mov:Kev tsim cov ntim khoom, cov khoom siv hauv chav ua noj, thiab cov khoom siv ua zaub mov.

Hais txog peb

Luoyang Dema Ntshuam & Export Co., Ltd. aims muab siab -zoo, nqi- cov khoom zoo rau lub ntiaj teb no factories, yas khoom manufacturers, thiab cov khoom distributors. Luoyang Dema Ntshuam & Export Co., Ltd. muab qhov zoo tshaj plaws PP, PE, PVC, EVA, thiab ABS cov ntaub ntawv daws teeb meem rau cov khoom yas manufacturers, wholesalers, distributors, Hoobkas tswv, ua rhiav, thiab lwm lub koom haum.

 

Yog tias koj tab tom nrhiav cov ntaub ntawv yas dav dav, thov koj xav tias dawb tau txais cov nqi tshiab thiab cov lus hais los ntawm Luoyang Dema Import & Export Co., Ltd. Pab pawg muag khoom yuav teb rau hauv 48 teev.