Alkali-dawb Chopped Strand Mat: Classification Thiab Performance Analysis
Alkali-dawb chopped strand lev (CSM)yog cov khoom siv tseem ceeb hauv kev tsim cov fiberglass reinforced plastics (FRP). Nws cov txheej txheem ntau lawm suav nrog: chopping alkali-dawb "E" iav fiber ntau filaments rau hauv ruaj khov- ntev fibers; uniformly nteg cov fibers rau ntawm ib tug txav conveyor siv ib tug airflow system; siv cov nplaum nplaum (polyester hmoov lossis PVAc emulsion); thiab thaum kawg kho ntawm qhov kub thiab txias ua ntej winding mus rau hauv ib daim ntawv lev tas mus li.
Classification thiab Manufacturing txheej txheem
Raws li hom binder, tws strand lev tau muab faib ua ob pawg:
1. Hmoov Mat
Binder: Polyester hmoov
Txheej Txheem: Fiber chopped → Txau polyester hmoov → ziab → Txias dov thiab teeb tsa
Cov yam ntxwv: Loose fiber nto, binder yog granular (pom rau ntawm qhov muag liab qab) Fast resin nkag (lub sij hawm impregnation Tsawg tshaj los yog sib npaug rau 100s, nkag mus tsawg dua los yog sib npaug rau 40s) High tensile zog (Ntau dua los yog sib npaug rau 100N), dav siv
Disadvantages: Txheej plua plav, fibers qhuav yog nquag detachment
2. Emulsion Mat
Khoom siv: PVAc emulsion
Txheej Txheem: Fiber ncaj qha txau nrog PVAc emulsion → ziab → Ntuj txias thiab teeb tsa
Yam ntxwv: Muaj zog adhesion, plua plav me me, kev ua haujlwm zoo ib puag ncig Ntau cov khoom siv fiber ntau, muaj zog sib xws (Ntau dua lossis sib npaug rau 130N) Mos rau qhov kov, haum rau phau ntawv txheej.
Qhov tsis zoo: Cov resin impregnation tsis zoo (lub sij hawm impregnation Tsawg dua los yog sib npaug rau 180s, lub sij hawm nkag tsawg dua lossis sib npaug li 80s)
Daim ntawv thov thiab xaiv cov lus pom zoo
Powder lev daim ntawv thov scenarios: Cov txheej txheem yuav tsum tau ceev resin impregnation, ua ntej kev tsim khoom, thiab lees txais cov kev cai tswj cov plua plav.
Emulsion mat daim ntawv thov scenarios: Phau ntawv txheej (tes nteg-nce, tshuaj tsuag), hais txog ib puag ncig tus phooj ywg, cov khoom sib xws, thiab adhesion rau complex curved nto.
Xaus
Qhov kev ua tau zoo sib txawv ntawm chopped strand mats qia los ntawm qhov xwm ntawm cov nplaum -polyester hmoov muab kev ua haujlwm siab impregnation, thaum PVAc emulsion txhim kho kev ua haujlwm. Kev xaiv yuav tsum muaj kev xav txog cov yam ntxwv ntawm cov txheej txheem, cov kev xav tau ntawm kev ua haujlwm, thiab ib puag ncig tsim khoom kom ua tiav cov khoom zoo.
