BMC yog cov ntawv luv ntawm cov iav fiber reinforced unsaturated polyester thermosetting yas, thiab tam sim no nws yog cov khoom siv dav tshaj plaws ntawm cov khoom siv thermosetting yas.
BMC Nta thiab daim ntawv thov
BMC muaj lub cev zoo, hluav taws xob thiab khoom siv hluav taws xob, yog li nws muaj ntau yam kev siv, xws li kev tsim khoom ntawm cov khoom siv xws li cov kav dej, lub valve npog, thiab cov manhole npog thiab rims.Nws kuj yog siv dav hauv aviation, kev tsim kho, rooj tog zaum, khoom siv hluav taws xob, thiab lwm yam, uas yuav tsum muaj av qeeg, nplaim hluav taws kub, kev zoo nkauj thiab kav ntev.
Cov yam ntxwv ntawm kev ua BMC
1. Fluidity: BMC muaj fluidity zoo thiab muaj peev xwm tswj tau zoo fluidity nyob rau hauv qis siab.
2. Curability: Lub curing ceev ntawm BMC kuj ceev, thiab lub sij hawm kho yog 30-60 vib nas this / hli thaum molding kub yog 135-145 ° C.
3. Tus nqi shrinkage: Lub shrinkage tus nqi ntawm BMC yog tsawg heev, ntawm 0-0.5%.Tus nqi shrinkage kuj tuaj yeem hloov kho los ntawm kev ntxiv cov khoom ntxiv raws li xav tau.Nws tuaj yeem muab faib ua peb theem: tsis muaj shrinkage, qis shrinkage, thiab siab shrinkage.
4. Colorability: BMC muaj xim zoo.
5. Disadvantages: lub sij hawm molding kuj ntev, thiab cov khoom burr kuj loj.
BMC compression pwm
BMC compression molding yog ntxiv ib qho nyiaj ntawm molding compound (agglomerate) rau hauv pwm preheated, pressurize thiab kub, thiab ces solidify thiab zoo li.Cov txheej txheem tshwj xeeb yog qhov hnyav → pub → molding → filling (cov agglomerate nyob rau hauv siab Nws ntws thiab puv tag nrho cov pwm) → kho → (tag nrho kho tom qab khaws cia ntawm qhov kub thiab txias rau ib lub sij hawm ntawm lub sij hawm) → qhib lub pwm thiab tshem tawm cov khoom → sib tsoo lub burr, thiab lwm yam → tiav cov khoom.
BMC compression molding txheej txheem txheej txheem
1. Moulding siab: 3.5-7MPa rau cov khoom lag luam zoo tib yam, 14MPa rau cov khoom uas muaj qhov xav tau siab.
2. Moulding kub: Cov pwm kub feem ntau yog 145 ± 5 ° C, thiab cov pwm ruaj khov tuaj yeem txo qis los ntawm 5-15 ° C rau demolding.
3. Pwm clamping ceev: qhov zoo tshaj plaws pwm clamping tuaj yeem ua tiav hauv 50 vib nas this.
4. Lub sijhawm kho: Lub sijhawm kho ntawm cov khoom siv nrog phab ntsa tuab ntawm 3 hli yog 3 feeb, lub sijhawm kho nrog phab ntsa thickness ntawm 6 hli yog 4-6 feeb, thiab lub sijhawm kho nrog phab ntsa thickness ntawm 12 hli yog 6-10. feeb.
Post lub sij hawm: May-13-2021
