2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28
Epoxy resin yog ib yam khoom uas muaj kev tiv thaiv zoo rau cov kua qaub, halogens thiab alkalis. Qhov no yog hluavtaws oligomer. Nws tuaj yeem siv los nplaum yuav luag txhua yam khoom siv. Nyob rau hauv cov kua hauv lub xeev, nws yog pob tshab epoxy resin uas muaj xim daj-txiv kab ntxwv, thiab tom qab hardening nws tig xim av thiab xyaum zoo rau kev noj qab haus huv. Txawm li cas los xij, nws tsis tuaj yeem siv qhov twg yuav muaj peev xwm tiv tauj nrog cov kuab tshuaj uas ntxuav tawm cov sol feem. Hauv nws lub xeev cov kua, nws muaj tshuaj lom heev, yog li nws siv yuav tsum muaj qee yam kev cai.
Tau kawg, nws tsis tuaj yeem siv rau cov tais diav lossis lwm yam khoom uas tuaj yeem cuam tshuam nrog zaub mov lossis dej haus, muaj lwm yam tshuaj rau qhov no. Txawm li cas los xij, vim nws cov khoom, epoxy resin yog ib qho kev pabcuam tseem ceeb hauv ntau qhov kev lag luam. Ob txoj hauv kev tseem ceeb ntawm kev siv cov khoom siv no: ua cov nplaum thiab impregnation. Nrog nws cov kev pab, pob zeb thiab hlau raug tiv thaiv los ntawm corrosion, casting pwm yog tsim, ntau yam, tseem ceeb heev, qhov chaw yog glued ua ke nyob rau hauv yuav luag tag nrho cov ceg ntawm engineering. Epoxy resin thiab fiberglass yogpib cov ntaub ntawv rau zus tau tej cov fiberglass, dav siv nyob rau hauv kev tsim kho, nkoj thiab aircraft tsim. Tsis tas li ntawd, thawj tus yog siv rau pouring hauv electronics thiab txawm nyob rau hauv tsim.
Epoxy resin yog siv nyob rau hauv tandem nrog ib tug hardener. Qhov kev kho cua sov tsis tuaj yeem lees txais, hauv cov xwm txheej hauv tsev, hauv kev cob qhia me me, cov tshuaj txias yog siv. Thiab rau cov khoom tseem ceeb tsim los ua hauj lwm nyob rau hauv siab zoo li qub thiab dynamic loads, nyob rau hauv nruj ib puag ncig - kub curing reagents. Nyob rau hauv cov ntaub ntawv no, ib tug denser network yog tsim los tuav lub polymer molecules ua ke. Tsis tas li ntawd, muaj epoxy resins thiab hardeners tsim tshwj xeeb rau cov av noo siab, dej ntsev.
Thaum ua haujlwm nrog nws hauv lub neej txhua hnub, nws yuav tsum nkag siab tias thaum nws ua ke nrog lub hardener, cov tshuaj tiv thaiv exothermic tshwm sim, thiab qhov loj ntawm cov polymer, qhov kub ntau yog tsim. Hauv qhov no, nws yog ib qho tsim nyog yuav tsum xaiv cov khoom siv kom raug thiab sib txuas nrog lub hom phiaj ntawm kev siv, vim tias qhov tshwm sim yuav tsum yog cov khoom sib xws (tsis muaj npuas) khoom. Tsis tas li ntawd, cov tshuaj tiv thaiv ntawm hardener thiab resin yog irreversible, thiab tom qab nws cov thermoplastic, tsis zoo li cov thermoplastic, tsis tuaj yeem yaj los yog yaj kom remake qhov tshwm sim.
Cov khoom siv ntau tshaj plaws thiab pheej yig rau kev kho cov ntaub ntawv epoxy niaj hnub no yog PEPA, DETA, TETA, TEPA thiab No. 1 (hexamethylenediamine yaj hauv ethyl cawv). Vim lub fact tias ib txwmob lub ntsiab lus yog ib qho yooj yim heev, nws elasticity yog nce los ntawm kev ntxiv lwm yam. Cov khoom no hu ua "elasticizer", nws tuaj yeem muaj cov tshuaj sib txawv thiab, nyob ntawm qhov no, muaj qee yam ntxwv. Muaj tseeb tiag, cov kws tshawb fawb tau tshawb pom cov ntaub ntawv uas muaj peev xwm los ua ob qho tib si hardener thiab elasticizer.
Pom zoo:
Kev lag luam ntawm kev lag luam: hom, kev faib tawm, kev tswj hwm thiab kev lag luam. Cov ceg tseem ceeb ntawm kev lag luam hauv tebchaws
Txhua lub tebchaws muaj nws txoj kev lag luam. Nws yog ua tsaug rau kev lag luam uas cov peev nyiaj tau ntxiv, cov khoom tsim nyog, cov khoom lag luam, thiab cov khoom siv raw yog tsim. Lub degree ntawm kev loj hlob ntawm lub xeev feem ntau nyob ntawm qhov ua tau zoo ntawm lub teb chaws kev khwv nyiaj txiag. Qhov siab dua nws yog tsim, ntau dua kev lag luam muaj peev xwm ntawm lub teb chaws thiab, raws li, tus qauv ntawm kev ua neej nyob ntawm nws cov pej xeem
Yuav qhib kev lag luam hauv chaw nres tsheb li cas? Kev lag luam hauv tsev hauv chaw nres tsheb. Mini lag luam nyob rau hauv lub garage
Yog tias koj muaj chaw nres tsheb, ua cas koj tsis xav ua lag luam hauv nws? Cov nyiaj tau los ntxiv tsis tau cuam tshuam rau leej twg, thiab nws muaj peev xwm ua tau tias nws yuav dhau los ua qhov tseem ceeb yav tom ntej. Nyob rau hauv tsab xov xwm no, peb yuav txiav txim siab seb hom kev lag luam twg yuav tsum ua hauv chav nres tsheb yog qhov tsim nyog tshaj plaws. Hauv qab no yuav muab cov kev xav thiab cov tswv yim uas ntau tus neeg twb tau siv thiab ua kom tau txais txiaj ntsig zoo
Nrhiav cov tub ua lag luam nyob qhov twg thiab ua li cas? Qhov twg yuav nrhiav tau tus neeg ua lag luam rau kev lag luam me, rau kev pib, rau qhov project?
Kev pib ua lag luam hauv ntau qhov xwm txheej yuav tsum tau nqis peev. Tus neeg ua lag luam yuav nrhiav tau lawv li cas? Dab tsi yog cov txheej txheem rau kev tsim kev sib raug zoo nrog tus neeg ua lag luam?
Kev lag luam wholesale yog qhov tseem ceeb hauv kev lag luam ntawm txhua lub tebchaws
Kev muag khoom yog qhov txuas tseem ceeb hauv cov saw hlau ntawm kev lag luam kev sib raug zoo, nws ua haujlwm ntau yam tseem ceeb. Vim li cas ho txhim kho nws? Lub xeev cov hauj lwm yog dab tsi?
Qhov txawv ntawm tus neeg ua lag luam thiab tus ua lag luam yog dab tsi: nta thiab qhov sib txawv tseem ceeb
Koj puas tau xav paub qhov txawv ntawm tus neeg ua lag luam thiab tus ua lag luam? Nws puas zoo li koj hais tias cov no yog ob lo lus uas muaj lub ntsiab lus ib yam, tsuas yog ib qho yog qiv los ntawm Askiv, thiab lwm qhov yog los ntawm domestic? Qhov no tsis muaj tseeb. Tsis muaj ob lo lus muaj lub ntsiab lus tib yam hauv ib hom lus. Tom qab ntawd qhov txawv yog dab tsi?
