Qhov tshwm sim ntawm kev txhim kho kev ua haujlwm ntawm silicone roj hmab nws tus kheej-nplaum daim kab xev
Ua ntej, fatty acid hlau ntsev (zinc stearate) nrog ib tug molar feem ntawm methyl vinyl siloxane saw txuas ntawm 0.15%, ib tug nruab nrab degree ntawm polymerization ntawm txog 8,000 methyl ethyl quaternary cinnamon roj hmab ntawm 100 C ~ Ib tug muab tshuaj txhuam uas muaj 50% ntawm qhov zoo. Cov khoom xyaw yog npaj rau ntawm ob-yob roj hmab tov khoom ntawm 200 ° C. Tom qab ntawd cov mole feem ntawm methyl vinyl siloxane ntu yog 0.15%, 70 feem ntawm methyl vinyl cassia roj hmab nrog rau qib ntawm polymerization ntawm txog 8,000, thiab cov seem mole ntawm methyl vinyl siloxane ntu yog 0.5%. 30 qhov chaw ntawm methylvinyl cassia roj hmab nyoos roj hmab nrog ib tug degree ntawm txog 8 000, tov uniformly nyob rau hauv ib tug kneader, ntxiv 35 qhov chaw ntawm Nihon Denki Kogyo Co., Ltd. acetylene carbon dub, rauv carbon dub (Nyiv Poj Niam, y Qiangong Xi o Xiyi Yu V 3 Yu Shao Co., Ltd. Khoom muag: 亇, y Qiangong, y Xi EC—600 JD) 5 daim ntawv thiab graphite hmoov (Co., Ltd. 1 thiab 4-,> Ib yam khoom: SBC7.彳——POG) 40 qhov chaw, sib tov rau hauv roj hmab compound. Cais cov khoom siv roj hmab ntawm ob-cov menyuam
Nws yog tov nrog cov saum toj no-hais npaj ntawm 0.6 qhov chaw ntawm fatty acid hlau ntsev uas muaj 50% suab ntaub ntawv, thiab 0.8 qhov chaw ntawm vulcanizing tus neeg saib xyuas 2,5-dimethyl-2,5-bis (tert-butylperoxy) hexane rau daim ntawv sib tov silicone roj hmab. Cov roj hmab sib xyaw silicone tau vulcanized los ntawm kub nias ntawm 150 ° C, 2.9X106 Pa rau 10 min los npaj 1 hli thiab 2 hli tuab cov ntawv xeem, thiab tom qab ntawd vulcanized ntawm 200 C rau 4 teev los ntsuas qhov ntim thiab lub cev ntawm cov khoom. . Rau kev sib piv, fatty acid hlau ntsev tsis ntxiv, thiab lwm yam kev mob zoo ib yam.
Txhawm rau npaj cov khoom siv sib xyaw ua ke silicone roj hmab, txoj kev nce cov pa roj carbon dub feem ntau yog siv, thiab hardness ntawm conductive silicone roj hmab tom qab vulcanization yog siab dua. Rau cov khoom siv roj hmab silicone uas yuav tsum tau ua kom tsis muaj zog thiab ua haujlwm siab, ob qhov tshwj xeeb carbon dub tuaj yeem siv ua ke los txo cov pa roj carbon dub ntxiv kom tau txais cov khoom siv siab thiab tsis tshua muaj zog silicone roj hmab. Ob hom carbon dub tshwj xeeb yuav tsum ua raws li cov xwm txheej: ① Cov pa roj carbon dub ua los ntawm acetylene pyrolysis; ② Carbon dub ua los ntawm non-acetylene pyrolysis, nrog toluene coloring lub teeb transmittance saum toj no 90%, thiab qhov tshwj xeeb nto ntawm carbon dub A thiab carbon dub B Qhov txawv yuav tsum siab tshaj 1,000 mm2 / g thiab qis dua 1,500 m2 / g.
Qhov piv ntawm carbon dub A rau carbon dub B yuav xam raws li cov conductivity thiab hardness ntawm lub kawg conductive silicone roj hmab ntawm 20: 80 thiab 80: 20. Tag nrho cov compounding npaum li cas ntawm A thiab B tuaj yeem yog 5-25 qhov chaw raws li 100 feem ntawm raw silicone roj hmab.
