Wb sib tham txog vim li cas cov khoom silicone tau pwm los ntawm tus qauv tsim qauv kev xav.

Raws li cov khoom tsim qauv engineers, Kuv feem ntau nug cov lus nug xws li: "Lub nplhaib silicone sealing no tsuas yog siv rau lub hlis xwb, ua li cas nws twb moldy? Nws puas muaj teeb meem nrog cov khoom siv?" Kuv cov lus teb ib txwm yog: cov khoom siv tsuas yog ib feem ntawm qhov laj thawj; Qhov teeb meem loj dua nyob rau hauv kev tsim qauv. Niaj hnub no, los ntawm tus qauv engineers txoj kev xav, cia peb tham txog engineering logic qab silicone pwm. I. Nkag siab txog Silicone Ntshiab Silicone (polydimethylsiloxane) yog cov khoom siv tsis muaj roj polymer nrog Si-O daim ntawv cog lus hauv nws cov saw tseem ceeb molecular, nthuav tawm cov tshuaj muaj zog heev. Pwm lub enzyme system tsuas yog tsis tuaj yeem rhuav tshem cov qauv no. Dab tsi yog cov qauv molecular yam ntxwv ntawm silicone roj hmab? Dab tsi yog nws qhov tseem ceeb siv? _obsh foaming tus neeg saib xyuas|ib puag ncig accelerator Yog li ntawd, nruj me ntsis hais lus, silicone nws tus kheej tsis pwm. Pwm yog tshwm sim los ntawm deposits ntawm silicone nto. Tab sis raws li tus qauv engineers, peb tsis tuaj yeem nres ntawm qhov xaus tias cov khoom nws tus kheej zoo. Yam uas cov neeg siv pom yog pwm; qhov peb yuav tsum tau daws yog -vim li cas cov av thiaj ruaj khov rau cov silicone thiab tsis tuaj yeem ntxuav tawm? II. Kev soj ntsuam ntawm qhov ua rau pwm loj hlob hauv Silicone Cheebtsam 1. Nto Microstructure Los ntawm kev tsim qauv kev xav, txhua qhov chaw sib cuag yog ib qho mating nto. Thaum siv, cov khoom siv silicone rov ua dua rau cov khoom tawv, ua rau micro- khawb rau ntawm qhov chaw. Cov khawb no feem ntau nyob nruab nrab ntawm ob peb micrometers thiab kaum micrometers sib sib zog nqus- pom tsis tau ntawm qhov muag liab qab, tab sis txaus kom haum rau pwm spores thiab cov organic residue. Thaum cov dej nkag mus rau hauv cov micro-grooves, lawv tsim cov reservoirs me me uas cov pwm loj tuaj sai heev. Engineering Implications: Yog tias cov khoom siv silicone yuav tsum tau nyob ntev -lub sij hawm sib cuag nrog cov zaub mov los yog tib neeg lub cev, lub hom phiaj tsim rau saum npoo tiav (Ra tus nqi) yuav tsum tsawg li tsawg tau. Txawm li cas los xij, qhov tseeb, cov txheej txheem kho saum npoo rau cov khoom siv silicone hauv ntau cov khoom tsis suav nrog hauv kev tshuaj xyuas kev tsim qauv, uas yog qhov tsis txaus ntawm cov txheej txheem tsim qauv. 2. Cov Kab Ntsig Qhov no yog qhov uas cov kws tsim qauv tsim qauv yuav tsum xav txog feem ntau. Ntau cov khoom siv silicone yog tsim los nrog cov grooves sib sib zog nqus, qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob. Piv txwv li: Qhov sib txawv ntawm lub nplhaib silicone sealing thiab cov hlau / yas plhaub Qhov sib txawv ntawm lub pob silicone thiab lub vaj huam sib luag Lub puab tais ntawm silicone folding qauv Cov chaw no muaj cov yam ntxwv zoo: noo noo tuaj yeem nkag mus, tab sis tsis tuaj yeem evaporate. Tsis tas li ntawd, cov cuab yeej tu tsis tuaj yeem ncav cuag lawv txhua. Los ntawm DFM foundations, cov qauv no yuav zoo nyob rau hauv 3D qauv, tab sis nyob rau hauv kev siv tiag tiag, lawv dhau los ua pwm loj - thaj chaw uas muaj kab mob. Kev cuam tshuam txog engineering: Thaum lub sij hawm tsim kev tshuaj xyuas, ntxiv rau kev txiav txim siab rau kev sib dhos thiab kev pom zoo, yuav tsum ntxiv qhov loj me ntxiv - kev ntsuas kev huv. Rau txhua qhov tob tob thiab crevic, nug koj tus kheej: Tus neeg siv puas tuaj yeem ntxuav nws? Cov dej noo puas tuaj yeem qhuav tag? 3. Kev xaiv khoom Lub hardness (Shore A) ntawm silicone ncaj qha cuam tshuam nws qhov ntom ntom. Feem ntau hais lus: Ntau yam khoom xaiv qis- hardness silicone kom ua tiav qhov muag muag. Txawm li cas los xij, softness txhais tau tias loj dua molecular gap, uas txhais tau hais tias nws yooj yim rau nqus cov organic teeb meem thiab ya raws. Engineering Implications: Kev xaiv cov khoom siv tsis tuaj yeem ua raws li kev xav xwb. Qhov sib npaug yuav tsum raug ntaus ntawm cov neeg siv kev paub dhau los thiab kav ntev. Yog tias yuav tsum tau siv cov silicone mos, cov txheej txheem kho saum npoo tom ntej (xws li siv cov tshuaj tiv thaiv - fouling txheej) yuav tsum tsim nyog . 4. Draft Angle thiab Demolding Design Qhov no yog qee yam uas tsis yog - tus qauv engineers yuav tsis xav txog. Silicone qhov chaw feem ntau yog molded, yuav tsum muaj lub kaum sab xis ntawm cov pwm tsim. Lub kaum sab xis tsis txaus yuav ua rau lub ntsej muag silicone yuav raug khawb thaum lub sij hawm demolding, ua rau cov kua muag me me los yog burrs. Cov kev puas tsuaj no dhau los ua cov ntsiab lus nkag rau av thiab grime thaum siv tom ntej. Tsis tas li ntawd, ib qho kev tsim tawm tsis raug cai hauv cov pwm tuaj yeem ua rau me me pores ntawm silicone qhov chaw, uas kuj yog qhov chaw yug me nyuam rau pwm. Engineering Implications: Thaum lub sij hawm tshuaj xyuas pwm, ntxiv rau kev tsom mus rau qhov ntev thiab qhov pom, qhov cuam tshuam ntawm demolding ntawm qhov chaw ncaj ncees yuav tsum tau xav txog. Ib qhov zoo- tsim pwm yuav tsum tsim cov khoom siv silicone nrog rau qhov chaw tsis muaj qhov hws thiab khawb. III. Cov Lus Qhia Txog Tus Kws Tsim Qauv Tsim Qauv ✅ Tsim Theem Txo cov grooves sib sib zog nqus thiab cov kaum sab xis tuag: Siv cov qauv qhib thaum twg los tau es tsis txhob kaw cov qauv, thiab siv cov ces kaum loj loj hloov txoj cai-angled grooves. Tswjhwm Nto Roughness: Rau cov khoom silicone uas tuaj rau hauv kev sib cuag nrog cov zaub mov / tib neeg lub cev, qhov pom zoo saum npoo tiav yog Ra tsawg dua lossis sib npaug li 0.8μm. Xav txog kev tshem tawm: Yog tias cov khoom siv silicone yuav tsum raug rau qhov chaw ntub dej, tsim lawv nrog cov qauv tshem tawm kom yooj yim rau lub sij hawm sib sib zog nqus los yog hloov. ✅ Cov Khoom Siv Theem Ua Ntej Ua Ntej Khoom Noj-Qib Liquid Silicone (LSR): LSR muaj qhov purity ntau dua thiab ntom dua li cov khoom siv silicone, ua rau muaj kev tiv thaiv zoo dua. Kev xaiv Hardness tsim nyog: Zam ultra- mos silicone (<30A) unless there is a strong justification for optimal tactile feedback. ✅ Mold Stage Draft Angle ≥ 3°: Reduces demolding damage. Properly Arrange Venting Channels: Avoids surface porosity. Mold Surface Polishing: Silicone parts produced from mirror-polished molds (SPI A1/A2 grade) have a denser surface and are less prone to contamination. In Conclusion While silicone mold may appear to be due to uncleanliness, it is a result of a combination of factors related to materials, structure, and manufacturing processes. As structural engineers, our responsibility goes beyond simply making products functional and aesthetically pleasing; it's also about ensuring their durability in real-world usage scenarios. While mold may not affect functionality, it directly impacts user experience and brand reputation.