Yuav ua li cas txhim kho qhov adhesion ntawm silicone?

Yuav ua li cas txhim kho qhov adhesion ntawm silicone?
Koj tuaj yeem pib los ntawm qhov tseem ceeb ntawm silicone nws tus kheej, cov ntaub ntawv sib txuas, kev kho saum npoo thiab kev sib txuas:
Silicone xaiv thiab hloov kho
Xaiv cov khoom siv silicone tsim nyog: Xaiv cov khoom siv silicone raws li cov ntaub ntawv sib koom ua ke thiab kev siv cov xwm txheej. Piv txwv li, rau kev sib txuas yas, xaiv silicone tshwj xeeb rau kev sib txuas yas; Rau kev siv sab nraum zoov, xaiv silicone nrog huab cua tsis zoo.
Ntxiv cov viscosity-txhim kho cov neeg ua haujlwm: Ntxiv cov viscosity-txhim kho cov neeg ua haujlwm xws li silane coupling agents rau silicone tuaj yeem txhim kho cov tshuaj lom neeg ntawm silicone thiab qhov chaw ntawm cov khoom sib txuas thiab txhim kho cov adhesion. Tom qab silane coupling tus neeg sawv cev yog hydrolyzed, ib kawg reacts nrog silanol pab pawg neeg nyob rau hauv silicone thiab lwm kawg reacts nrog cov active pab pawg neeg nyob rau saum npoo ntawm cov khoom sib koom ua ke los tsim ib tug tshuaj daim ntawv cog lus thiab txhim khu lub adhesion.
Ua kom zoo dua cov mis silicone: Los ntawm kev kho cov qauv silicone, xws li hloov cov hom polymer, qhov sib piv ntawm tus neeg sawv cev crosslinking thiab hom catalyst, cov qauv thiab kev ua tau zoo ntawm silicone tom qab kho tuaj yeem ua kom zoo dua los txhim kho qhov adhesion. Kev tsim nyog ntawm tus neeg sawv cev crosslinking tuaj yeem ua rau kom cov crosslinking ntom ntom ntawm silicone thiab txhim khu kev sib koom ua ke, uas yog qhov tsim nyog rau kev txhim kho qhov adhesion, tab sis ntau dhau ntawm crosslinking yuav ua rau cov silicone nkig thiab yuav tsum tau tswj kom tsim nyog.
Kev xaiv thiab kho cov khoom sib txuas
Xaiv cov ntaub ntawv yooj yim-rau-kev sib cog lus: muab qhov tseem ceeb rau cov ntaub ntawv sib txuas nrog lub zog saum npoo thiab muaj zog polarity, xws li hlau, iav thiab ceramic, uas yooj yim rau kev sib cuam tshuam nrog silicone thiab muaj kev sib txuas zoo.
Kev Kho Mob Kho Siab: Sandblast, Polish lossis RUB los ntawm cov khoom sib cog lus nrog cov khoom sib ze, nthuav dav ntawm silicone, tsim cov tshuab ua ke ua ke thiab ua kom muaj zog sib luag. Piv txwv li, sandblasting cov hlau nto yuav tsim cov pob me me rau ntawm qhov chaw, tso cai rau silicone kom zoo dua.
Kev kho tshuaj lom neeg: kho qhov chaw ntawm cov khoom sib txuas nrog cov tshuaj reagents los hloov nws cov khoom siv tshuaj thiab ua kom cov dej ntog. Piv txwv li, kho polyolefin plastics nrog cov tshuaj chromic acid los qhia cov pawg polar; aluminium alloys yog degreased nrog alkali tov thiab corroded nrog acid los tsim ib tug active oxide zaj duab xis los txhim kho cov tshuaj tiv thaiv muaj peev xwm nrog silicone.
Nto pretreatment
Kev ntxuav ntawm qhov chaw: siv cov kuab tshuaj organic xws li acetone thiab toluene, los yog dej deionized thiab cov tshuaj ntxuav tes kom tshem tawm cov impurities xws li roj, plua plav, pwm tso tus neeg sawv cev thiab oxide txheej rau ntawm qhov chaw ntawm cov khoom sib txuas los xyuas kom meej kev sib cuag ntawm silicone thiab cov khoom. nto. Yog tias cov hlau saum npoo yog oily, so nws ntxuav nrog cov kuab tshuaj organic.
Kev kho mob primer: Siv cov primer rau saum npoo ntawm cov khoom sib txuas los yog silicone los txhim kho qhov sib txuam thiab adhesion ntawm ob. Primer tuaj yeem hnov ​​​​mob chemical lossis lub cev adsorb nrog rau saum npoo ntawm cov khoom sib txuas, thiab tib lub sijhawm ua ke zoo nrog silicone. Piv txwv li, thaum cov roj hmab thiab silicone sib txuas, siv cov primer uas muaj cov silane coupling tus neeg sawv cev los txhim kho qhov adhesion.
Optimize kev sib txuas lus
Tswj cov kua nplaum siv: Cov kua nplaum siv yuav tsum yog nruab nrab los xyuas kom meej tias cov silicone npog tag nrho cov khoom sib txuas, thiab tsis txhob sagging ntau dhau thiab npuas uas cuam tshuam rau kev sib raug zoo. Rau qhov sib txawv ntawm qhov sib txuas thiab cov duab, qhov tsim nyog ntawm cov kua nplaum yuav tsum tau txiav txim siab los ntawm kev sim.
Ua kom cov kua nplaum zoo ib yam: Siv cov txheej txheem siv kua nplaum tsim nyog, xws li txhuam, txau, thiab khawb, kom ntseeg tau tias cov silicone sib npaug sib npaug ntawm cov khoom sib txuas. Kev txhuam hniav yog tsim rau thaj chaw me me thiab cov duab nyuaj; Cov tshuaj tsuag muaj kev ua haujlwm siab thiab cov kua nplaum zoo ib yam, thiab yog siv rau kev sib txuas loj hauv cheeb tsam; scraping tuaj yeem tswj tau qhov tuab ntawm cov nplaum txheej.
Ua kom zoo curing tej yam kev mob: nruj me ntsis tswj lub curing kub, av noo thiab lub sij hawm raws li cov lus qhia ntawm silicone khoom. Kev ua kom qhov kub zoo tuaj yeem ua kom qhov kho ntawm silicone, nce qib ntawm kev sib txuas, thiab txhim kho lub zog sib txuas, tab sis kub dhau heev yuav ua rau silicone aging thiab kev ua haujlwm degradation. Qee cov silicones yuav tsum tau kho nyob rau hauv ib qho chaw noo noo, yog li cov av noo ntawm ib puag ncig yuav tsum tau tswj.