Dab tsi yog lub ntsiab molding txheej txheem ntawm epoxy iav fiber board

1. Muab tes tso rau ntawm qhov chaw ntub dej

Siv tus neeg sawv cev tso tawm thiab txheej txheej ntawm cov kua dej nruab nrab ntawm cov thermosetting resin nrog viscosity ntawm 0.3-0.4PaS rau saum npoo ntawm cov pwm nyob rau hauv lem (tom qab lub gel lub tsho yog coagulated) thiab ib txheej ntawm fiber reinforced cov ntaub ntawv. Cov ntaub ntawv fiber ntau muaj qhov xav tau ntawm qhov chaw thiab tsis yog qhov sib tw ntxhib Muaj ntau ntau hom gauze (cov ntaub checkered). Siv ib lub tes tuav cov menyuam los yog txhuam kom impregnate cov khoom siv fiber ntau nrog cov resin, tshem tawm cov npuas npuas, thiab ua kom lub hauv paus txheej. Kev ua haujlwm layup yog rov ua ntau zaus kom txog rau thaum tus tsim thickness ntawm cov khoom mus txog. Cov resin yog kho nyob rau hauv chav tsev kub vim yog cov tshuaj tiv thaiv polymerization. Yuav tau rhuab kom ceev curing. Tam sim no, tes lay-up yog daim ntawv tseem ceeb hauv kuv lub teb chaws, uas suav txog li 80% ntawm cov khoom siv sib xyaw ua ke.

2. Resin txhaj tshuaj thiab hloov tshuaj hloov RTM molding

RTM yog kaw-pwm qis-siab molding txheej txheem. Muab cov khoom siv ua kom muaj fiber ntau nruab nrab ntawm cov pwm sab saud thiab qis dua; kaw cov pwm thiab kaw cov pwm; txhaj cov tshuaj nyob rau hauv siab; qhib cov pwm tom qab cov tshuaj kho tau zoo, thiab tshem tawm cov khoom. Ua ntej txheej txheej txheej gelation pib, cov tshuaj yuav tsum tau ntim rau hauv cov kab noj hniav pwm, thiab lub siab ua kom cov tshuaj hloov pauv sai sai rau hauv cov pwm thiab ua rau cov khoom siv fiber ntau.

3. Moulding ntawm daim ntawv SMC (ntau BMC)

Ntxiv cov neeg pib, cov fillers, pigments, sab hauv pwm tso cov neeg ua haujlwm, cov khoom siv qis qis, cov thickeners, thiab lwm yam rau hauv cov resin, thiab sib tov los ua cov tshuaj txhuam. Cov tshuaj nplaum nplaum ntog rau ntawm cov yeeb yaj kiab hauv qab ntawm SMC chav tsev (feem ntau yog siv polyethylene zaj duab xis los yog nylon zaj duab xis), thiab tib lub sijhawm, nws nyob rau hauv cov yeeb yaj kiab qis thiab txiav rau hauv 25 ~ 55mm iav fiber ntau strands, thiab tom qab ntawd npog nrog ib daim ntaub. txheej zaj duab xis los ua ib daim ntawv. Sandwich yob. Khaws lub kauj rau ob peb hnub kom tuab cov khoom kom ncav cuag lub viscosity moldable. SMC yog muab los ua ib qho thaub qab hauv lub xeev bundled. Lub kauj yog unrolled, txiav, hnyav, muab tso rau hauv lub rhuab steel pwm platinum, pressurized rau solidify thiab pwm, thiab ces cov khoom tiav lawm.