Prepreg yog ib qho kev sib txuas ntawm cov qauv matrices thiab cov cuabyeej ua rau lub cev muaj zog lossis cov ntaub qhwv ziab nrog cov pobtxiv uas muaj cov tawv nqaij, thiab yog cov khoom siv rau cov khoom siv, uas yog siv ncaj qha los tsim ntau yam khoom siv sib xyaw.
A. Kev Xav Kom Zoo rau cov ntaub ntawv ua ntej
Prepreg yog lub hauv paus ntawm cov khoom sib txuam, nws zoo yog ncaj qha ntsig txog qhov zoo ntawm cov ntaub ntawv sib xyaw, kev sib xyaw cov txheej txheem thiab cov khoom siv dag zog yog nyob ntawm kev ua tau zoo ntawm Prepreg. Yog li no, Prepreg tseem ceeb rau kev thov thiab kev tsim kho ntawm cov ntawv cog lus. Cov txheej txheem yooj yim rau prepreg feem ntau yog raws li nram no:
1. Hloov matrix thiab qhov cuab lub zog kom phim: qhov kev kho qhov cuab lub zog kom zoo dua qub thiab rov ua kom yooj yim tshaj, xws li cov composites muaj peev xwm zoo sib xws.
2. Ua kom zoo txaus thiab paving: viscosity yuav tsum tsis txhob loj dhau, yog li ntawd qhov tso ntawm qhov tsis ncaj ncees lawm, tuaj yeem rov paving, thiab cov khoom uas tsis yog pre-leaching. Ntawm qhov tod tes, viscosity tsis dhau me me, yog viscosity tsawg dhau, thaum ua hauj lwm kub, ob prepreg tsis tau pasted ua ke, yog li tsis tau futie muab tshuaj txhuam ntawm cov pwm, tshem tawm sab nraud quab yuam yuav thim rov qab, Los ntawm cov pwm.
3. Cov ntsiab lus ntawm cov ntaub qhwv yuav tsum muaj tsawg li tsawg tau: tsawg kawg yog ± 3%% kom paub meej tias cov kua nplaum thiab cov khoom siv dag zog. Nyob rau hauv kev, prepregant non-absorbent, cov ntsiab lus sib txawv yog qhov zoo tshaj plaws kev tswj hauv ±% 1 %%.
4. Cov ntsiab lus tsawg tsawg li tsawg tau: kev tswj dav hauv 2%, kom txo cov ntsiab lus hauv cov ntawv sau ua kom zoo ntxiv rau cov khoom siv sib xyaw kom haum. Cov ntsiab lus ntawm cov txheej txheem tseem ceeb ntawm cov kabmob taub hau Prepreg yog tswj los ntawm 0.8 %%.
5. Lub sij hawm ntev cia: feem ntau yuav tsum muaj sij hawm cia nyob rau hauv chav tsev kub tshaj 1 hlis, -18 degrees Celsius siab dua 6 lub hlis, aiming kom tau raws li lub tshuab paving composite thiab kev ua haujlwm kev ua haujlwm.
6. Kev kho molding muaj ib txoj hlua siv kom zoo: qhov ntawd yog, nyob rau hauv ntau qhov kub siab, muaj peev xwm nrhiav tau cov khoom siv sib xyaw kom haum, tiam sis kev ua haujlwm tsis muaj teeb meem loj.
7. Kev tsim nyog muaj: Lub cev ntim ntawm qhov prepreg nrog prepreg tuaj yeem tsim kom loj dua, yog li ntawd lub pob zeb yuav sib npaug thiab suav nrog cov khoom siv ntxiv; Lub pob txha cob ntawm prepreg nyob rau hauv cov qauv khoob khoob pob zeb yuav tsum me dua, thiaj li hais tias cov phiajcim thiab cov ntaub ntawv tseem ceeb yuav muab sib xyaw ua ke.
Ob. Kev siv cov yam ntxwv ntawm prepreg
1. Tswj cov ntsiab lus thiab kev kho ntawm lub cev zoo;
2. Yooj yim rau qhov tawv;
3. Npaj kom tiav, tsis muaj npuas, tsim tau cov khoom zoo zoo;
4. Kev ruaj ntseg thaum muaj ntau lawm;
5. Kev tsim cov txheej txheem ntau kim.
Peb. Ntau Cov Khoom Siv ntawm Prepreg
Cov khoom ntawm prepreg yog cov txheej txheem ntawm cov pob txha hnav daim tawv nqaij (lossis fabrics), kev siv cov txheej txheem ntawm cov khoom rhuav pov tseg ntau ntau hom.
Txoj kev ua tiav ntawm kev thermosetting resin substrate yog ib txoj kev paub tab. Lub prepreg ntawm thermosetting resins yog mas muab faib ua ob lub txheej txheem: cov tshuaj Impregnation thiab cov hau kub kub. Ob txoj kev ua tau zoo thiab qhov tsis zoo thiab sib ntxiv. Nws yog kwv yees tias ob hom ntawm cov txheej txheem ntau lawm yuav tuaj tib lub sij hawm kom tau raws li cov kev xav tau sib txawv, tab sis qhov kub yaj txoj kev ua neeg ntau dua. Nyob hauv txawv teb chaws, kev tsim cov kub yaj yog pom tau los ntawm kev tswj xyuas tsis siv neeg txoj kev siv, siv lub computer los tswj cov thickness ntawm yas zaj duab xis nyob rau hauv cov pwm theem, yog li ua kom uniformity ntawm cov ntaub ntawv cob.
