Epoxy Cob ED-20: Yam Ntxwv Thiab Daim Ntawv Thov, Xaiv Tawv, GOST Qib Qib, Cov Lus Qhia Rau Kev Siv

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2024-01-18 12:13

ED-20 epoxy-diane resin hom tau tsim hauv Russia rau ntau dua 60 xyoo. Thaum pib, nws yog cov khoom lag luam npaj rau kev tiv thaiv kev lag luam, thiab niaj hnub no cov khoom siv tau siv hauv lub neej txhua hnub thiab hauv kev tsim khoom. Ob qhov kev sib xyaw ua ke muaj qib siab ntawm qhov zoo thiab ntseeg tau, tab sis qhov tseem ceeb tshaj plaws yog nws tus nqi qis thiab muaj. Koj tuaj yeem yuav epoxy ntawm txhua lub khw muag khoom kho vajtse.

Cov yam ntxwv tseem ceeb

Epoxy resin ED-20 yog tsim tawm ntawm Lavxias FPC "Cov nroj tsuag muaj npe tom qab Sverdlov", cov chaw tsim khoom muab nws cov khoom tsis tsuas yog rau kev ua lag luam hauv tsev, tab sis kuj txawv teb chaws. Cov nroj tsuag nyob hauv nroog Dzerzhinsk, thaj tsam Nizhny Novgorod. Tsis tas li, epoxy-diane resin tau tsim los ntawm ntau lub tuam txhab nyob hauv CIS lub tebchaws.

Raws li GOST 10587-84 qib ED-20 suav nrog epichlorohydrin thiab diphenylolpropane. Raws li cov lus piav qhia, nws yog cov khoom siv polymer ua kom sib xyaw ua ke ntawm cov khoom siv no hauv qhov nruab nrab alkaline, uas muaj fusibility thiab yas. Ntxiv rau alkaline condensate, muaj toluene cob rau ntawm lub khw, tab sis cov khoom ntawm ob yam khoom zoo ib yam. Txij li ED-20 yog qhov xav tau tshaj plaws hauv kev lag luam, nws tau ntim rau hauv cov hwj lossis cov nruas hlau, qhov ntim uas yog 50 kg . Cov khoom lag luam npaj rau siv hauv tsev yog fwj hauv cov thawv me me. Dian epoxy resin yog ob yam khoom lag luam. Nws qhov tseem ceeb zoo li tuab thiab pob tshab tsis muaj zib mu. Cov tawv tawv (tuab tuab thiab xim amber) tau ntxiv rau qhov kev sib xyaw no.

Yog tias koj sib xyaw ob qho tib si thiab muab lub sijhawm cob rau polymerize, qhov tshwm sim yog cov khoom siv uas tiv taus txhua yam ntawm cov kuab tshuaj thiab tsis ua hluav taws xob tam sim no los ntawm nws tus kheej.

Yog tias peb txiav txim siab ntau ntxiv cov tshuaj lom neeg muaj pes tsawg leeg ntawm epoxy-diane cob, nws zoo li no:

• Cheebtsam epoxy - los ntawm 20 txog 22.4%;
• saponifiable chlorine - los ntawm 0.3 txog 0.8%;
• cov khoom hloov pauv - ntawm 0.3 txog 0.7%;
• hydroxyl pawg ntawm cov tshuaj - 1,8%;
• chlorine ions - los ntawm 0, 002 txog 0, 006%.

Tsis muaj cov yas yas ntxiv thaum tsim cov ED-20 epoxy-diane cob, yog li ntawd, nyob rau hauv kev cuam tshuam ntawm kev co lossis kev txav chaw ntawm lub hauv paus, cov txheej khov khov tuaj yeem ua rau tawg. Txog thaum lub sijhawm polymerization, cov khoom muaj viscosity zoo thiab yas . Cov kua nplaum qee zaum yaj nrog cov kuab tshuaj organic kom txo qib viscosity ua ntej sib xyaw nrog cov tawv tawv.

Cov khoom epoxy-diane muaj cov khoom hauv qab no:

• cov tshuaj yog polymerized tom qab 90 feeb. tom qab sib tov nrog cov tawv tawv;
• qhov muaj pes tsawg leeg yuav ua kom muaj zog ntxiv tom qab 24 teev;
• khoov tsis kam yog 85-145 MPa;
• ua haujlwm kub ntau - los ntawm 55 txog 170 degrees;
• dynamic viscosity ntawm cov khoom yog los ntawm 13 txog 20 Pa * s;
• ntom ntom ntawm qhov kub ntawm + 20 ° C thaj tsam ntawm 1, 16 txog 1, 25 kg / m³.

Cov tuam txhab tsim khoom qhia tias lub txee lub neej ntawm cov khoom siv yog tsawg kawg 18 lub hlis. txij li hnub tsim khoom ntawm cov khoom, thaum cov tawv tawv muaj lub neej txee ntev dua 2 xyoos. Nws yog qhov tsim nyog los khaws ED-20 hauv qhov chaw tsaus ntawm qhov kub tsis tshaj 40 ° C . Cov tshuaj tuaj yeem daws tau ntawm 20 ° C - qhov no hu ua txheej txheem txias. Hauv qhov chaw tsim khoom, cov ntawv tuab ntawm cov tawv tawv tawv thaum raug rau qhov kub siab dua, thiab txoj kev ua kom tawv no hu ua kub tawv.

Cov ntawv thov

Cov khoom lag luam polymer ED-20 tau siv dav. Hauv yuav luag txhua cheeb tsam ntawm kev tsim khoom, cov khoom sib xyaw no tuaj yeem xav tau.

• Ntsuas . Nyob rau hauv daim ntawv ntawm cov hluav taws xob insulator, ntxiv rau tsim cov qauv thav duab thiab lawv cov phab ntsa nrog qib qis ntawm cov cua sov ua kom sov.
• Xov tooj cua engineering sphere . Rau kev tsim khoom ntawm cov laug cam, chips, microcircuits.
• Kev Nkoj Nkoj . Kev tsim khoom thiab kho cov thav duab rau lub nkoj, yachts, nkoj, nrog rau cov khoom siv sib xyaw rau ntau lub hom phiaj.
• Kev tsim dav hlau . Rau kev tsim cov thav duab ntawm lub fuselage, tis thiab lwm yam khoom sib xyaw.
• Kev tiv thaiv kev lag luam . Raws li lub hauv paus ntsiab lus rau kev tsim cov qauv hnyav ntawm cov cuab yeej tiv thaiv lub cev.
• Mechanical engineering . Kev tsim khoom thiab kho cov pob khawm lub cev thiab cov khoom siv sab hauv sab hauv.
• Rooj tog tsim khoom . Rau kev ua kom zoo nkauj tiav thiab tsim cov rooj tog tshwj xeeb ua piv txwv ntawm pob zeb, ntoo, hlau.
• Tsev . Raws li cov khoom siv tiv thaiv dej rau ntau yam txheej txheem txheej txheem.

Siv cov tshuaj epoxy ua lub hauv paus thiab ntxiv ib lossis lwm lub yas rau nws, ntau hom kua nplaum uas siv hauv lub neej txhua hnub tau txais los ntawm cov tshuaj polymer no. Cov kua nplaum no muaj qib siab ntawm lub zog thiab lub sijhawm sib txawv rau polymerization. Feem ntau, kua nplaum epoxy tau siv hauv lub neej txhua hnub los ua haujlwm kho.

Cov kua nplaum muaj peev xwm ntseeg tau txuas cov khoom ua los ntawm yas, hlau, pob zeb.

Cov lus qhia rau kev siv

Cov tshuaj tsis kho tau zoo li cov yas yas uas muaj pob tshab zoo kawg nkaus. Tsis tas yuav ntxiv cov tawv tawv, nws khaws nws cov khoom qub . Lub zog ua haujlwm ua tus txheej txheem rau txheej txheem tshuaj lom neeg polymerization, thaum lub sijhawm uas cov tshuaj sib xyaw maj mam thiab sib npaug. Qhov nrawm thiab zoo ntawm cov txheej txheem polymerization tau cuam tshuam los ntawm kev faib ua feem uas cov tshuaj tau sib xyaw nrog cov tawv tawv, nrog rau qhov kub ib puag ncig. Cov neeg tsim khoom feem ntau xa cov lus qhia ntxaws rau lawv cov khoom qhia qhov sib piv ntawm ob lub khoom siv sib xyaw rau lawv. Rau kev ua haujlwm, 10 feem ntawm cov cob thiab 1 feem ntawm cov tawv tawv raug coj los.

Tab sis qee qhov xwm txheej, cov kws ua haujlwm xaiv qhov zoo tshaj plaws ntawm cov ntaub ntawv los ntawm kev sim, hloov pauv cov lej no.

Kev siv ED-20 tau ua tiav hauv theem.

Kev cob qhia

Yog tias koj npaj ua kom tawv tawv ntawm qhov kub hauv chav (txheej txheem txias), tom qab ntawd npaj ua ntej rau cov txheej txheem no tsis tas yuav ua. Thaum siv txoj hauv kev kub, koj yuav tsum ua kom sov epoxy nrog dej da dej . Txhawm rau ua qhov no, cov kua nplaum tau nchuav rau hauv lub khob thiab muab tso rau hauv lub taub ntim nrog dej kub, thaum nws tsim nyog los xyuas kom meej tias cov dej tsis nkag mus rau hauv cov tshuaj, txwv tsis pub cov polymer yuav raug puas tsuaj. Cov muaj pes tsawg leeg yuav tsum tau ua kom sov me ntsis thiab tsis muaj qhov xwm txheej twg nws yuav tsum raug coj mus rhaub. Cov cua sov kub ntawm epoxy yuav tsum tsis pub tshaj 55 ° C.

Yog tias cov tawv ntoo tuab thaum khaws cia ntev, nws tseem tau ua kom sov, tab sis qhov no qhov kub yuav tsum tsis pub tshaj 40 ° C . Hauv cov txheej txheem cua sov hauv chav da dej, cov tshuaj yuav tsum maj mam muab maj mam muab txhuam nrog ntoo lossis iav lo.

Qhov no yuav tsum tau ua thoob plaws lub sijhawm cua sov tag nrho.

Cov txheej txheem ua haujlwm

Yog tias nws xav tau tias cov nplaim dej kho epoxy tuaj yeem tiv taus cov khoom siv dag zog, tom qab ntawd cov yas tshwj xeeb tau ntxiv rau cov tshuaj polymer, thiab tom qab ntawd tawv dua. Txoj kev no tau siv, piv txwv li, txhawm rau txuas cov nqaws txhawm rau muab lawv cov kev ywj pheej . Raws li cov yas yas, DBP (dibutyl phthalate) tuaj yeem siv tau, uas tau ntxiv txhawm rau txhawm rau txhawm rau tiv thaiv kev kho cov tshuaj epoxy cob kom sov thiab ua kom puas tsuaj. DBP tau ntxiv rau hauv qhov nyiaj ntawm 2 txog 5% rau tag nrho cov ntim ntawm cov khoom sib xyaw.

Lwm cov yas yas ntau yog DEG-1 (diethylene glycol) . Cov tshuaj tiv thaiv no tau ntxiv rau hauv qhov ntim ntawm 3 txog 10%, thiab cov khoom ntxiv no tso cai ua kom muaj kev ywj pheej siab ntawm cov tawv tawv epoxy. Qhov ntau DEG-1 muaj nyob hauv ED-20, ntau qhov ua tiav cov khoom yuav zoo li roj hmab. Tab sis cov yas yas muaj qhov tsis zoo - nws xim cov xim hauv cov xim txiv kab ntxwv nplua nuj.

Tom qab cov yas yas tau ntxiv rau cov tshuaj epoxy, cov catalyst tau ntxiv rau nws hauv daim ntawv ua kom tawv tawv. Txij lub sijhawm no, cov txheej txheem polymerization hloov tsis tau pib. Raws li cov lus qhia, cov tawv tawv tau nkag mus rau hauv cov khaub thuas txias lossis rau hauv cov dej rhaub kom kub tsis tshaj 40 ° C . Tshaj li qhov ntsuas no tuaj yeem ua rau qhov tseeb tias thaum lub sijhawm qhia cov tawv tawv, cov khoom sib xyaw yuav rhaub. Cov tawv tawv yuav tsum tau ntxiv maj mam thiab tusyees, nplawm tas li. Thaum epoxy resin thiab hardener tau sib xyaw, cov tshuaj lom tshwm sim, thaum lub sijhawm cua sov tso tawm. Yog tias cov tawv tawv raug txhaj nrawm heev, cov kua nplaum yuav kub thiab tawv tam sim ntawd.

Thaum ua haujlwm, qhov tshwj xeeb no yuav tsum raug coj mus rau hauv tus account.

Cov hom catalysts hauv qab no tau siv los ua tawv tawv rau epoxy resin:

• PEPA;
• THETA;
• DEET;
• NTSE-45.

Thaum siv cov tawv tawv ntawm ETAL-45 lub npe, koj tsis tas yuav ntxiv cov yas rau cov tshuaj sib xyaw, vim tias cov tshuaj tiv thaiv no twb muaj tag nrho cov khoom tsim nyog.

Ib txheej rau tsev neeg siv epoxy resin ED-20 tau ua tiav ncaj qha ntawm cov chaw tsim khoom, nws muaj cov tshuaj thiab cov tawv tawv, yog li cov khoom no tsis tas yuav yuav ib leeg cais los ntawm ib leeg. Feem ntau, txoj hauv kev txias tau siv hauv tsev, uas yog, ob qho khoom siv sib xyaw ntawm chav sov . Hauv cov khoom siv, uas tau muag hauv cov khw muag khoom, cov tshuaj tau ua tiav nrog PEPA (polyethylene polyamine) tawv, txawm hais tias qee zaum TETA tawv (triethylenetetramine) kuj tseem yuav suav nrog hauv cov khoom siv.

TETA tawv tawv yog pob tshab, thaum PEPA polymerizer muaj xim xim daj-xim daj, uas tseem pleev xim rau cov tshuaj epoxy hauv tib qhov ntxoov ntxoo.

Qhov ua ntej ntawm kev teeb tsa nrog PEPA tawv tawv tau piav qhia los ntawm qhov tseeb tias cov khoom no suav tias yog txheej txheem txias, yog li cov neeg siv khoom tsis tas yuav tsim cov xwm txheej ntxiv rau cua sov cov khoom. Dhau li, PEPA tawv tawv tsis zoo li kho avalanche yog tias tus neeg siv pib hno cov tawv mus rau hauv cov tshuaj sai sai.

Raws li rau tawv tawv TETA, nyob rau nruab nrab ntawm lub sijhawm ua kom tawv, nws yog qhov tsim nyog los tsim cov xwm txheej rau cov khoom uas huab cua puag ncig yuav sov li 80 ° C. Hauv qhov no, kev kho cov ntaub ntawv zoo dua thiab nrawm dua.

Nws yog teeb meem heev kom tau txais qhov ntsuas kub nyob hauv tsev.

Kev kho tag nrho ntawm cov tshuaj polymer, tsis hais hom twg siv tawv tawv, ntawm chav sov tshwm sim hauv ib teev. Cov theem ntawm polymerization no yog hu ua thawj solidification lossis gelation . Ntxiv nrog rau thawj, kev ua kom tawv tawv ntxiv yuav tsum tshwm sim. Nws lub sijhawm yog los ntawm 1 txog 2 hnub. Lub sijhawm no, nws tseem ntxov dhau los siv cov khoom lag luam, txij li nws yog qhov yuav tsum tau tos kom ua tiav qhov kawg ntawm cov tshuaj tiv thaiv tshuaj lom neeg ntawm cov polymers.

Polymerization pib tom qab qhia cov tawv tawv rau hauv cov yas - nws tsis tuaj yeem nres nws . Vim li no, nws tau pom zoo tias ua ntej ua haujlwm ntau ntau, sib xyaw ua ke cov tshuaj epoxy cob thiab pom qhov ntsuas nws qhov kev kho kom thiaj li npaj tau zoo txhua qhov koj ua haujlwm.

Kev ruaj ntseg ntsuas

Ua haujlwm nrog tshuaj polymer cov tshuaj uas sib cuam tshuam nrog ib leeg yuav tsum tau ua tib zoo saib xyuas thiab ua tib zoo saib xyuas los ntawm tus neeg siv. Kev ceev faj txog kev nyab xeeb yuav tsum tau ua raws los tiv thaiv koj tus kheej kev noj qab haus huv thiab tiv thaiv kev nyob zoo ntawm ib puag ncig . Qhov tseeb yog tias cov khoom ntawm epoxy cob tsis cuam tshuam rau tib neeg, tsiaj txhu thiab tsiaj qus tsuas yog thaum ua tiav polymerization. Hauv lwm qhov xwm txheej (nyob hauv daim ntawv ua kua, cais, nrog rau thaum sib xyaw cov tshuaj no), cov tshuaj lom neeg uas muaj teeb meem rau kev noj qab haus huv raug tso tawm rau ib puag ncig.

Epoxy resin tau muab tso rau chav kawm txaus ntshai 2 thaum raug rau tib neeg thiab tsiaj lub cev . Yog tias, thaum npaj cov khoom sib xyaw, cov khoom sib xyaw ua rau ntawm daim tawv nqaij, lawv yuav ua rau muaj kev tsis haum tshuaj. Txhawm rau tiv thaiv qhov no, daim tawv nqaij yuav tsum tau ntxuav hauv qab cov dej nrog ntxiv ntawm xab npum, thiab tom qab ntawd so nrog ib daim ntaub ntub dej hauv cawv. Tom qab ua tiav cov theem no, roj av jelly, roj castor lossis cream emollient tau siv rau ntawm daim tawv nqaij.

Thaum ua haujlwm nrog epoxy-diane resin, nws yog qhov tsim nyog los tiv thaiv cov kabmob ntawm lub zeem muag thiab ua pa . Txhawm rau ua qhov no, hnav tsom iav tiv thaiv, hnab looj tes roj hmab thiab lub tshuab ua pa. Qhov loj dua thaj chaw ua haujlwm ntawm cov tshuaj pleev xim, yuav tsum muaj kev tiv thaiv tus kheej zoo dua. Txhawm rau tshem tawm cov khoom siv tshuaj lom neeg sai, koj yuav tsum muaj dej huv, dej cawv thiab cov kua nplaum ua kua.

Nrog cawv cawv, qhov sib xyaw epoxy tuaj yeem tshem tawm sai sai ntawm khaub ncaws lossis lwm yam khoom.

Cia

Rau lub hom phiaj tsim khoom, epoxy resin tau ntim rau hauv ntim los ntawm 50 txog 200 kg, nws tseem tuaj yeem hliv rau hauv cov kaus poom, cov kaus poom lossis fwj ntawm 0.5 l. Cov kua nplaum tsuas yog thauj yog tias cov khoom raug tiv thaiv los ntawm tshav ntuj ncaj qha . Polymer muaj pes tsawg leeg ED-20 tuaj yeem khaws cia hauv lub thawv kaw nruj ntawm qhov kub ntawm +15 txog + 40 ° C. Ntawm kev sib cuag nrog huab cua, cov tshuaj ua kom tuab thiab qhuav. Nws tsis pom zoo khaws cov khoom no ze rau oxidizing lossis acidic tshuaj. Lub txee lub neej ntawm cov tshuaj zoo li no yog 12 lub hlis.