Methyl silicone roj damping khoom: Tus saib xyuas tsis pom ntawm cov khoom siv hluav taws xob thiab hluav taws xob

Raws li ib yam ntawm cov roj silicone, methyl silicone roj nthuav tawm zoo heev thiab ruaj khov damping kev ua tau zoo tshaj qhov kub thiab ntau zaus. Txhawm rau ua tiav qhov kev ua tau zoo no, cov roj methyl silicone yuav tsum muaj cov viscosity tsawg -kub coefficient kom ruaj khov damping cuam tshuam ntawm qhov kub sib txawv. Tsis tas li ntawd, txhawm rau txhim kho qhov ua tau zoo ntawm methyl silicone roj, ib qho ntawm cov muab tub lim feem ntau yog ntxiv rau kev txhim kho viscosity. Cov fillers no yuav tsum nyob twj ywm tsis- nyob rau hauv cov roj silicone nyob rau lub sij hawm ntev, thiab cov viscosity ntawm cov damping kua yuav tsum tau hloov me ntsis nyob rau hauv ib tug tej yam shear npaum li cas los tuav ruaj khov damping kev ua tau zoo.

Lub viscosity ntawm methyl silicone roj hloov nrog nce kub, tab sis cov coefficient ntawm variation txawv rau methyl silicone roj ntawm txawv viscosities. Feem ntau, cov viscosity coefficient ntawm methyl silicone roj nrog viscosity siab dua nce nrog nce viscosity. Txawm li cas los xij, viscosity-kub coefficient ntawm methyl silicone roj tsis tas li nce nrog nce viscosity. Thaum cov viscosity -kub coefficients ntawm methyl silicone roj yog tib yam, silicone roj nrog viscosity siab dua feem ntau muaj cov molar loj tis. Qhov no qhia tau hais tias cov viscosity- qhov kub thiab txias ntawm methyl silicone roj tsis yog tsuas yog cuam tshuam nrog viscosity tab sis kuj tseem cuam tshuam nrog cov molar loj faib. Yog li ntawd, nyob rau hauv cov ntaub ntawv siv, methyl silicone roj ntawm cov viscosities sib txawv tuaj yeem sib xyaw ua ke sib txawv los npaj cov roj methyl silicone nrog qis viscosity -kub coefficients raws li cov roj hauv paus rau cov kua dej damping.

Txhawm rau txhim kho qhov kev vibration damping kev ua tau zoo ntawm cov kua dej damping, ib qho ntawm cov thickening fillers yuav tsum tau ntxiv rau methyl silicone roj. Feem ntau siv cov fillers suav nrog calcium carbonate, diatomaceous earth, silica, thiab polymethylsilsesquioxane hmoov. Ntawm lawv, ultrafine calcium carbonate tau pom qhov zoo tshaj plaws thickening nyhuv ntawm methyl silicone roj, uas yog ze ze rau nws loj tshwj xeeb thaj chaw. Txawm li cas los xij, txawm tias thaum ultrafine calcium carbonate tau siv los ua cov thickener, methyl silicone roj tseem precipitated thiab sib cais tom qab ntev cia. Qhov no qhia tau hais tias txawm hais tias ultrafine calcium carbonate muaj cov nyhuv thickening zoo, nws tsis yog qhov zoo tshaj plaws muab tub lim rau thickening silicone roj.

Silica, silica-raws li muab tub lim, kuj muaj qhov cuam tshuam loj rau kev ua haujlwm ntawm cov kua dej damping. Txhawm rau kom ruaj khov damping kev ua tau zoo ntawm cov kua damping ntawm cov nqi sib txawv, cov viscosity ntawm cov kua damping yuav tsum tau hloov me ntsis nyob rau hauv ib co shear npaum li cas. Cov kev tshawb fawb tau pom tias rotor ceev muaj qhov cuam tshuam loj rau cov viscosity dynamic damping kua uas muaj ntau hom silica ntawm methyl silicone roj raws li cov khoom siv hauv paus. Yog li ntawd, thaum npaj damping kua, nws yog ib qho tsim nyog yuav tsum tswj tus nqi thiab hom silica ntxiv kom tau qhov zoo tshaj plaws damping kev ua tau zoo.