Kev Ntsuam Xyuas Kev Ntsuas ntawm Liquid Silicone-Encapsulated PC Txhaj Moulding Technology: Txheej Txheem, Teeb meem, thiab Kev daws teeb meem (Part 1)

Cov lus tseem ceeb: Liquid Silicone Rubber (LSR) encapsulating PC, LSR txhaj tshuaj molding, kua silicone overmolding, silicone overmolding, txheej txheem txhaj tshuaj molding, LSR-encapsulated PC txhaj molding txheej txheem

Liquid Silicone Rubber Encapsulating PC
I. Kev Taw Qhia

Hauv kev tsim khoom niaj hnub no, kev tsim kho tshiab hauv cov ntaub ntawv thiab molding thev naus laus zis yog qhov tseem ceeb rau kev txhim kho cov khoom lag luam thiab nthuav dav daim ntawv thov. Liquid silicone roj hmab (LSR) encapsulating polycarbonate (PC) txhaj tshuaj molding tshuab, raws li ib tug advanced ob-cov ntaub ntawv molding txheej txheem, organically combines cov zoo elasticity, huab cua tsis kam, thiab physiological inertness ntawm LSR nrog lub siab zog, siab transparency, thiab seem stability ntawm PC, muab ib txoj hauv kev zoo los tsim high{2}}kev ua tau zoo. Kab lus no tsom mus rau kev txheeb xyuas cov khoom siv sib txuas, kev sib txuas ntawm cov txheej txheem, cov txheej txheem ntws, cov teeb meem sib txawv thiab cov kev daws teeb meem, cov qauv tswj kev ua haujlwm zoo, kev siv thaj chaw, thiab kev txhim kho thev naus laus zis ntawm cov thev naus laus zis no, muab cov kev qhia dav dav rau cov kws tshaj lij kev lag luam.

Liquid Silicone Rubber Encapsulating PC
I. Kev Taw Qhia

Hauv kev tsim khoom niaj hnub no, kev tsim kho tshiab hauv cov ntaub ntawv thiab molding thev naus laus zis yog qhov tseem ceeb rau kev txhim kho cov khoom lag luam thiab nthuav dav daim ntawv thov. II. Bonding Mechanisms

Kev sib raug zoo ntawm PC thiab LSR feem ntau ua tiav los ntawm peb lub tswv yim hauv qab no:

1. Mechanical Interlocking: Cov txheej txheem tshwj xeeb, xws li cov kab zoo, grooves, barbs, thiab pores, yog tsim los ntawm PC nto. Thaum LSR raug txhaj rau hauv pwm thiab kho, nws embeds rau hauv cov microstructures, tsim ib tug neeg kho tshuab anchoring nyhuv, yog li pab txhawb lub zog ntawm kev sib raug zoo ntawm ob. Qhov no mechanical interlocking mechanism plays lub luag haujlwm tseem ceeb hauv kev txhim kho kev sib raug zoo, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov raug siab shear thiab tev rog.

2. Tshuaj Bonding: Ib qho tshwj xeeb primer yog siv los pretreat lub PC nto. Cov khoom xyaw nquag hauv cov primer tuaj yeem ua tshuaj lom neeg nrog cov molecules ntawm PC nto los tsim cov tshuaj tiv thaiv. Tib lub sijhawm, kev sib txuas tshuaj lom neeg kuj tshwm sim ntawm primer thiab LSR, tsim kom muaj kev sib txuas ntawm cov tshuaj muaj zog ntawm PC thiab LSR. Tsis tas li ntawd, qee qhov ntawm tus kheej - nplaum LSR cov ntaub ntawv tuaj yeem tsim cov tshuaj sib txuas ncaj qha nrog lub PC nto thaum lub sij hawm molding txheej txheem, ntxiv cov txheej txheem yooj yim dua thiab txhim kho kev sib koom ua ke.

3. Lub cev adsorption: Los ntawm optimizing lub zog saum npoo ntawm PC thiab LSR, lawv qhov chaw nyiam ib leeg ntawm qib molecular, ua tiav lub cev adsorption bonding. Kev sib piv ntawm lub zog saum npoo tuaj yeem ua tiav los ntawm kev kho cov thev naus laus zis (xws li kev kho ntshav plasma thiab kev kho nplaim taws). Cov txheej txheem no tuaj yeem hloov kho cov tshuaj muaj pes tsawg leeg thiab microstructure ntawm cov khoom nto, ua kom lub zog saum npoo thiab txhawb nqa lub cev adsorption. Hauv kev siv cov tswv yim, peb txoj kev sib koom ua ke no feem ntau ua haujlwm sib koom ua ke kom muaj kev ruaj ntseg thiab txhim khu kev qha kev sib txuas ntawm PC thiab LSR.

III. Cov txheej txheem Flow thiab cov cuab yeej tseem ceeb

Cov kua silicone-coated PC txhaj tshuaj molding tshuab siv cov txheej txheem overmolding. Nws cov txheej txheem yooj yim ntws yog raws li nram no:

1. PC Txhaj Moulding: PC granules yog ntxiv rau lub tshuab txhaj tshuaj molding chim, rhuab thiab melted, thiab ces txhaj rau hauv kab noj hniav ntawm precision pwm nyob rau hauv tej kub, siab, thiab lub sij hawm. Tom qab tuav lub siab thiab txias, lub PC substrate yog tsim.

2. Kev kho deg (Yeem): Txhawm rau txhim kho kev sib txuas ntawm PC thiab LSR, qhov saum npoo ntawm PC substrate raug kho raws li qhov xav tau tiag tiag. Feem ntau siv cov kev kho mob saum npoo muaj xws li kev kho ntshav ntshav, kho cov nplaim taws, thiab kev kho mob primer . 3. LSR Txhaj Molding: Qhov saum npoo - kho PC substrate yog muab tso rau hauv pwm (lossis hloov mus rau lwm qhov kab noj hniav). Siv cov txheej txheem tshwj xeeb LSR txhaj tshuaj molding, cov khoom A thiab B ntawm cov kua silicone tau raug ntsuas thiab sib xyaw hauv qhov sib piv 1: 1, thiab tom qab ntawd txhaj rau hauv pwm ntawm qhov kub thiab siab qis, txheej txheej PC substrate nto.

4. Kev kho: LSR yog rhuab thiab kho hauv pwm, ua rau tus ntoo khaub lig- txuas cov tshuaj tiv thaiv uas tsim cov roj hmab elastic, ua tiav daim ntawv cog lus nrog PC substrate.

5. Txias thiab Demolding: Tom qab kho, pwm yog txias kom txo cov khoom kub mus rau qhov tsim nyog demolding kub. Cov pwm yog tom qab qhib, thiab cov khoom molded raug tshem tawm.

6. Nto Kho Tshuab

5.1 Plasma Treatment: Siab- cov khoom siv hluav taws xob plasma tuaj yeem ua rau lub PC ntog kom tshem tawm cov kab mob ntawm qhov chaw thiab ua kom cov molecules ntog, ua kom lub zog saum npoo. Feem ntau siv plasma gases muaj xws li cua, oxygen, thiab nitrogen. Lub zog ua haujlwm feem ntau yog 500-1000W, thiab lub sijhawm ua haujlwm yog 30-120 vib nas this. Plasma kev kho mob muaj qhov zoo xws li kev ua haujlwm siab, kev phooj ywg ib puag ncig, thiab tsis muaj tshuaj lom neeg, txhim kho qhov adhesion ntawm PC thiab LSR.

5.2 Primer Kev Kho Mob: Ib qho tshwj xeeb primer yog uniformly thov rau lub PC nto, tsim ib tug nruab nrab txheej nrog active pab pawg neeg. Cov primer concentration feem ntau yog tswj ntawm 5% -10%. Tom qab daim ntawv thov, nws qhuav nyob rau hauv qhov cub ntawm 70-80℃rau 30-60 feeb kom tso cai rau cov primer kom tag nrho kho thiab tsim ib tug tshuaj daim ntawv cog lus nrog lub PC nto. Kev kho mob primer zoo txhim kho cov tshuaj sib txuas ntawm PC thiab LSR, tab sis ceev faj xaiv thiab siv cov primer yog qhov tseem ceeb los xyuas kom muaj kev sib raug zoo nrog PC thiab LSR cov ntaub ntawv.