Epoxy cob: ib tug indispensable cuab tam nyob rau hauv tag nrho cov sectors

Epoxy cob - tshuaj muaj siab kuj mus acids, bases thiab halogens. Nws yog ib tug hluavtaws oligomer. Nws yuav siv tau los muab zoo yam khoom. Nyob rau hauv lub kua hauv lub xeev yog ib tug ntshiab epoxy cob, uas muaj ib tug daj-txiv kab ntxwv nqaij daim tawv, thiab tom qab hardening nws yuav xim av thiab suab zoo rau kev kho mob. Txawm li cas los, nws siv qhov twg muaj tej zaum yuav tej zaum kev sib cuag nrog cov kuab tshuaj, huab-leachable feem tsis yooj yim sua. Nyob rau hauv lub kua hauv lub xeev nws yog heev tshuaj lom, li ntawd, nws siv yuav tsum tau ua raws li ib tug set ntawm cov kev cai.

Ntawm cov hoob kawm, rau tsevneeg cov tais diav los yog lwm yam khoom uas tuaj mus rau hauv kev sib cuag nrog cov zaub mov los yog dej haus, nws yuav siv tsis tau rau lub hom phiaj no muaj lwm yam tshuaj. Txawm li cas los, vim rau lawv lub zog, lub epoxy cob yog ib tug indispensable cuab tam nyob rau hauv ib tug heev ntau yam ntawm industries. Ob lub ntsiab siv ntawm cov khoom: raws li ib tug nplaum thiab impregnation. Nrog nws cov kev pab tiv thaiv xeb ua vaj tse, hlau, siv pwm, kua nplaum ntau yam, txawm tias ib tug tseem ceeb heev ib feem nyob rau hauv yuav luag tag nrho cov ceg ntawm engineering. Epoxy cob thiab fiberglass yog pib cov ntaub ntawv rau zus tau tej cov iav fiber, uas yog dav siv nyob rau hauv kev tsim kho, boat- thiab cua kev lag luam. Tsis tas li ntawd, cov thawj yog siv los sau nyob rau hauv electronics thiab txawm nyob rau hauv lub tsim.

Epoxy cob yog siv nyob rau hauv tandem muaj ib tug hardener. Qhov twg lub tshav kub kev kho mob yog tsis tsim nyog nyob rau hauv ib tug domestic ib puag ncig, lawv yog siv nyob rau hauv me me kev cob qhia txias substance. Thiab rau ib qho tseem ceeb cov khoom, tsim los ua hauj lwm thaum muaj kev kub zoo li qub thiab dynamic loads nyob rau hauv corrosive npuas - kub tua cov neeg ua hauj. Nyob rau hauv cov ntaub ntawv no, ib tug denser daim phiaj fastening polymer molecules. Tsis tas li ntawd, muaj ib tug epoxy cob thiab hardeners, tsim los rau cov tej yam kev mob ntawm high humidity, ntsev dej.

Ua hauj lwm nrog nws lub neej, nws yuav tsum tau to taub hais tias lub compound thiab nws hardener ib exothermic cov tshuaj tiv thaiv, thiab ntau dua tus luj ntawm lub polymer, ntau dua qhov lub tshav kub generated. Nyob rau hauv no kev twb kev txuas nws yog tsim nyog los xaiv txoj cai tooj ntawm cov kab mob, thiab mus correlate nws nrog lub hom phiaj ntawm qhov kev siv, raws li ib tug tshwm sim, yuav tsum tau txais ib yam (tsis muaj npuas) khoom. Tsis tas li ntawd, cov tshuaj tiv thaiv ntawm resin thiab hardener yog irreversible, thiab tom qab ntawd thermoset, tsis zoo li thermoplastic yuav tsis yaj los yog yaj rau rework tshwm sim. Cov ntau heev thiab pheej yig ntaub ntawv rau lub curing ntawm epoxy ntaub ntawv yog tam sim no xam tau tias yog PEPA, DETA, TETA, TEPA thiab №1 (hexamethylene diamine yaj nyob rau hauv ethyl cawv). Vim lub fact tias cov pa ob-tivthaiv compound - ib tug es lub cev tsis kho tshaj plaws, nws elasticity yog nce los ntawm kev ntxiv lwm tivthaiv. Qhov no lub caij no yog hu ua "tej yam modifier", tej zaum nws yuav muaj ib tug txawv tshuaj nyob tus yeees thiab, nyob ntawm seb qhov no, muaj tej yam ntxwv. Yeej muaj tseeb chemists muaj sab ntaub ntawv uas muaj peev xwm ua ob yam li ib tug hardener, thiab ib feem modifier.