Kua Silicone Roj Hmab (LSR) yog tov nrog tus neeg sawv cev ua npuas dej thiab tshuaj lom neeg tsim cov roj ntsha, yog li sib sau ua ke thiab cov qauv microcellular foaming.
1. Cov Khoom Siv Khoom Siv:
Siv ob {- sib xyaw ua kua siicone roj hmab (A & B cov khoom siv). Lub hauv paus roj hmab compound yog feem ntau ua ntej- npaj los ntawm tus neeg xa khoom. Feem ntau ib feem ntau muaj cov catalyst, thiab sib xyaw B muaj cov neeg sawv cev hla. Nyob ntawm cov kev xav tau ntawm cov khoom kawg (xws li ntom ntom, thiab xim ua kom zoo dua qub (xws li xim retesants thiab lwm yam ntxiv rau cov roj hmab roj hmab. Cov tshuaj ntxiv no feem ntau yog tov tusyees nrog tivthaiv ib lossis tiv thaiv b ua ntej.
2. Tus neeg sawv cev ua npuas ncauj qhia (Foaming Tus Neeg Sawv Cev Taw Qhia)Nov yog qhov txuas tseem ceeb tshaj plaws. Raws li hom kev ua npuas ncauj, nws yog feem ntau muab faib ua ob txoj hauv kev:
Cov txheej txheem: Tsim cov supercritical bu: Cov khoom siv ua kua yog rhuab thiab nias rau lub xeev supercritical los ntawm cov cuab yeej siv. Meteration thiab kev txhaj tshuaj: los ntawm kev mob siab - kub ntsuas yog txhaj mus rau hauv cov roj sib tshooj ntawm cov kua silicone roj hmab. Kev sib xyaw ua ke: Cheebtsam A (twb muaj SCCO₂) thiab cov khoom siv B yog cov sib xyaw ua ke thaum dhau los ntawm cov zoo nkauj. Meanwhile, Progy yog uniformly yaj nyob rau hauv cov roj hmab compound nyob rau hauv kev kub siab, sib sau ib tug tib- theem homogeneous sib xyaw. Tag nrho cov txheej txheem yog tswj hwm nyob rau hauv kev kub siab kom tiv thaiv kev sib koom ua ke los ntawm kev khiav dim ntxov.
b) Siv tshuaj lom neeg ua npuas ncauj rau tus neeg sawv cev ua npuas ncauj:Siv cov neeg sawv cev ua npuas ncauj foaming ua npuas ncauj, xws li azodicarbonamide (AC foaming tus neeg sawv cev). Txheej txheem: Pre6 {{1} mix tov cov npuas dej hmoov cov hmoov daj uas muaj kev tivthaiv ib lossis tiv thaiv b nyob rau hauv ib qho khoom siv stiring. Txhawm rau kom cov khoom puas yog qhov tsis taus {{3} pub dawb, lub tshuab nqus tsev DEACHER yog feem ntau yuav tsum tau tshem tawm cov pa tawm thaum lub sijhawm tawv.
3.Vulcanization thiab foaming:
Kev ua kom zoo nkauj lub cev: Tom qab cov roj hmab sib txuas tau txhaj rau hauv cov pwm kab noj hniav, thiab cov kev ntsuas siab yog tso tawm hauv cov roj hmab sib txuas, ua npuas nuclei. Lub caij no, qhov kub siab ua rau vulcanization thiab hla-} kev sib txuas hauv cov qauv sib xyaw ua npuas thiab kev sib sau cov qe.
Tshuaj lom neeg ua npuas ncauj: qhov kub ntawm tus pwm ua rau cov neeg sawv cev tshuaj lom neeg ua rau cov tshuaj lom neeg ua rau cov tshuaj lom neeg, ua cov roj (xws li n₂, CO₂). Nyob rau tib lub sijhawm, cov roj hmab silicone yog vulcanized, thiab roj yog encapsulated nyob rau hauv cov tsim roj hmab network, tsim cell.
4. Txhim Kho:Tom qab vulcanization foaming lub voj voog ua tiav (feem ntau nyob rau hauv kaum ob feeb mus rau ob peb feeb), qhib cov pwm thiab tshem tawm cov khoom. Vim tias cov viscosity qis ntawm LSR, cov khoom lag luam feem ntau tsis txhob lo rau pwm thiab yooj yim rau kev ua kom yooj yim.
5. Post - kev kho (thib ob vulcanization)(Post {{{0} Kho cov khoom lag luam) cov khoom ua kom muaj nuj nqis tom qab muaj kwv yees li 150} {degree rau 1-2 teev.