Tsab xov xwm no feem ntau xaiv MMA, BA, AA ua monomers, thiab tham txog cov yam ntxwv ntawm kev sib txuas polymerization nrog lawv, xws li kev sib ntxiv, qhov ntau ntxiv thiab qhov kub ntawm cov tshuaj tiv thaiv ntawm tus pib thiab txhua monomer, thiab nrhiav pom cov xwm txheej zoo tshaj plaws ntawm cov txheej txheem polymerization graft. Cov roj hmab yog thawj zaug masticated, tom qab ntawd do thiab yaj nrog cov kuab tshuaj sib xyaw ntawm 70 ~ 80 ° C, thiab tom qab ntawd tus pib BPO raug ntxiv rau hauv cov khoom. Thawj monomer MMA yaj nrog BOP raug ntxiv ntawm 80 ~ 90 ° C rau 20 feeb, thiab tom qab ntawd ntxiv nrog tus thib ob monomer ntawm BPO, tom qab lwm 20 feeb, ntxiv tus thib peb monomer ntawm 84 ~ 88 ℃ thiab do rau 45 feeb, khaws cia sov rau 1.5 ~ 2 teev, tom qab ntawd tau txais CR / MMA-BA-AA peb-txoj kev graft polymerization nplaum, Peel zog ntau dua CR / MMA-BA, nws tus nqi yog 6.6 KN.m-1.
Cov lus tseem ceeb: Cov nplaum neoprene, Cov kua nplaum khau, Cov nplaum neoprene ntau yam.
Cellulose etherMCthiabHPMCmuaj kev ua tau zoo dispersion, emulsification, thickening, adhesion, zaj duab xis tsim, dej retention, thiab kuj muaj dej zoo solubility, surface activity, stability, thiab dissolve hauv organic solvents.
Cov khoom tseem ceeb uas tam sim no tsim tawm yog RT series MC thiab HPMC ntau yam, uas nws cov qib yog 50RT (Methylcellulose), 60RT (Hydroxypropylmethylcellulose), 65RT (Hydroxypropylmethylcellulose), 75RT (Hydroxypropylmethylcellulose), sib raug rau cov qib ntawm DOW Chemical Company yog Methocel A, E, F thiab K, raws li.
Cov khoom RT series yog cov khoom siv ntxiv uas muaj txiaj ntsig zoo rau cov ntaub ntawv siv hauv kev tsim kho vim lawv qhov sib koom ua ke, kev ruaj khov ntawm kev ncua thiab kev khaws cia dej. Piv txwv li, lawv tuaj yeem tsim ua cov "ceramic phab ntsa thiab pem teb nplaum", feem ntau hu ua roj hmab hmoov, uas tau siv hauv Beijing West Railway Station, qhov cuam tshuam zoo. Tsis tas li ntawd, nws tuaj yeem siv ua cov electrolyte gelled hauv electrolytic capacitors thiab bonded electrode grids hauv cov khoom siv hluav taws xob, ua atropine, aminopyrine thiab anal crystals hauv tshuaj, thiab ua cov thickener rau cov dej emulsions hauv cov xim. Hauv cov xim latex thiab cov xim yaj hauv dej, nws tuaj yeem siv ua tus neeg sawv cev ua zaj duab xis, thickener, emulsifier thiab stabilizer, thiab lwm yam rau kev nplaum phab ntsa, dej rov ntub roj hmab hmoov, thiab lwm yam.
Cov lus tseem ceeb: Methyl Cellulose, Hydroxy Propyl Cellulose, nplaum, daim ntawv thov.
Kev tsim cov kua nplaum yas ua los ntawm cov ntawv dej
Nyob rau xyoo tas los no, ib txoj kev tshiab ntawm kev nplaum yas zaj duab xis rau ntawm cov ntawv luam tawm tau tsim. Nws yog BOPP (biaxially oriented polypropylene zaj duab xis) coated nrog nplaum thiab tom qab ntawd sib txuas ua ke nrog cov ntawv luam tawm tom qab raug nias los ntawm lub tog raj kheej roj hmab thiab lub tshuab cua sov los ua daim ntawv. / Yas 3-hauv-1 luam tawm. Qhov no cuam tshuam txog qhov teeb meem ntawm daim ntawv thiab yas sib txuas. BOPP yog cov khoom siv tsis-polar, yog li ntawd, muaj qhov xav tau rau cov nplaum uas muaj kev nplaum zoo rau ob qho tib si polar thiab tsis-polar.
Kev sib xyaw SBS nplaum nrog epoxy resin muaj kev sib raug zoo. SBS yog elastomer viscose. Nws tuaj yeem pom los ntawm nws cov kab nkhaus tsis ua haujlwm tias txhawm rau kom ua kom zoo dua qhov kev puas tsuaj ntawm cov nplaum viscose, nws yuav tsum tau tswj hwm nyob ib puag ncig SBS: epoxy resin = 2: 1. Los ntawm cov kab nkhaus lub zog tev tawm, nws tuaj yeem pom tias thaum qhov piv siab, lub zog tev tawm yuav zoo heev, tab sis qhov nplaum kuj yuav nce ntxiv. Txhawm rau kom tsis txhob muaj kev nplaum, SBS: epoxy resin = 1: 1 ~ 2.5: 1 tuaj yeem tswj tau kom tau txais lub zog tev tawm maj mam nce. Xav txog kom meej, txiav txim siab SBS hauv cov kua nplaum tseem ceeb: epoxy resin = 1: 1 ~ 3.5: 1.
Lub luag haujlwm tseem ceeb ntawm kev siv tackifying resin yog kom ua kom lub zog sib txuas ntawm lub matrix thiab txhim kho qhov ntub ntawm cov kua nplaum thiab qhov chaw sib txuas. Cov tackifying resin siv hauv kev tshawb fawb no yog rosin tackifier uas muaj cov rosin ib txwm thiab dimerized rosin hauv ntau qhov sib txawv. Los ntawm ntau qhov kev sim, nws tau xaus lus tias feem pua ntawm dimerized rosin hauv tackifier yog 22.5%, thiab lub zog tev ntawm cov kua nplaum npaj raws li qhov piv no yog 1.59N / 25mm (ntawv-yas).
Qhov ntau ntawm cov tackifier muaj qee yam cuam tshuam rau cov khoom nplaum. Qhov zoo tshaj plaws yog thaum qhov piv ntawm cov kua nplaum tseem ceeb thiab tackifier yog 1:1. Lub zog tev tawm N/mm yas-yas 1.4, ntawv-yas 1.6.
Hauv txoj kev tshawb fawb no, MMA tau siv los ua cov tshuaj diluent los sib tov SBS thiab MMA. Cov kev sim tau pom tias kev siv MMA tsis yog tsuas yog ua tiav lub hom phiaj ntawm kev sib tov cov khoom hauv colloid, tab sis kuj txo qhov viscosity thiab txhim kho lub zog nplaum. Yog li ntawd, MMA yog cov tshuaj diluent hloov kho tsim nyog. Tom qab kev sim, qhov ntau ntawm MMA siv yog tag nrho cov kua nplaum 5% ~ 10% yog qhov tsim nyog.
Vim tias cov viscose uas tau tsim yuav tsum yaj tau hauv dej, peb xaiv cov roj hmab dawb (polyvinyl acetate emulsion) ua cov khoom siv yaj tau hauv dej. Cov roj hmab dawb suav txog 60% ntawm tag nrho cov viscose. Tom qab cov viscose uas muaj dej tau emulsified mus rau hauv lub xeev dej-emulsion los ntawm kev sib kis thiab emulsification ntawm cov khoom siv emulsified, yog tias nws qhov sib xws tsis haum rau kev siv, nws tuaj yeem diluted nrog dej. Txoj kev dilution no yog ob qho tib si pheej yig thiab tsis muaj tshuaj lom (tsis tas yuav siv cov kuab tshuaj organic), thiab qhov zoo tshaj plaws ntawm cov dej dilution yog 10% ~ 20%.
Yuav kom tshem tawm cov seem ntawm viscose, nws tau sim tias cov tshuaj Na2CO3 dilute siv ua tus neeg sawv cev alkalizing, thiab qhov cuam tshuam yog qhov zoo tshaj plaws. Lub tswv yim ntawm cov nyhuv ntawm tus neeg sawv cev alkalizing tej zaum yuav yog tias cov tshuaj tiv thaiv saponification qhia txog qee cov ions polar muaj zog, xws li sodium ions, yog li cov kua qaub tsis yaj thawj zaug hloov mus ua ntsev sodium soluble. Tsis tas li ntawd, yog tias ntxiv ntau lub hauv paus muaj zog rau cov kua nplaum, lub zog nplaum yuav ploj mus, yog li cov kua nplaum tsis ua haujlwm, yog li cov kua nplaum tsis haum rau ib puag ncig alkaline.
Cov txheej txheem tsim nyog.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024