Yuav Hloov Epoxy Cob Li Cas? Analogs Rau Nchuav Thiab Muaj Tswv Yim, Hloov Pauv Pheej Yig Thiab Lwm Txoj Hauv Kev Rau Epoxy Hauv Tsev

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

Dab tsi tuaj yeem hloov epoxy resin tau muaj txiaj ntsig zoo rau txhua tus neeg nyiam kos duab kom paub. Cov khoom siv no tau siv dav hauv ntau hom ntoo ntoo, xaws khaub ncaws, thiab cov khoom dai kom zoo nkauj. Dab tsi zoo sib xws muaj nyob rau kev sau thiab khoom siv tes ua, yuav ua li cas thiaj nrhiav tau lwm txoj hauv kev pheej yig rau epoxy hauv tsev - txhua qhov no tsim nyog kawm paub ntau ntxiv.

Yam hloov loj

Muaj ntau ntau yam los txiav txim siab thaum xaiv cov khoom los hloov epoxy nrog. Tsis yog txhua yam khoom tsim nyog rau kev nchuav lossis tsim kom muaj kev sib txuas zoo . Qhov nyuaj tseem ceeb hauv kev nrhiav lwm txoj hauv kev yog tias epoxy resin hauv nws daim ntawv qub yog oligomeric compound. Txhawm rau muab nws nrog kev hloov pauv mus rau lub xeev polymerized, yuav tsum ua kom tawv tawv uas pib ua cov txheej txheem tshuaj tsim nyog. Lub xeev zaum kawg ntawm cov khoom siv feem ntau yog nyob ntawm qhov sib piv ntawm cov khoom xyaw no: seb nws puas txhav los yog yuav muaj qhov sib xws ywj pheej thiab cov khoom nyob ze rau roj hmab.

Nws yog qhov tsim nyog los nrhiav kev hloov pauv rau epoxy hauv qhov xwm txheej uas tus tswv muaj qhov tshwm sim ntawm kev tsis haum tshuaj rau cov oligomer no . Tsis tas li ntawd, cov tshuaj tsis haum rau kev ua haujlwm zoo nrog rau cov duab zoo thiab nyuaj. Nws yuav nyuaj rau ua tiav qhov tseeb ntawm no. Tsis txhob siv cov tshuaj epoxy thaum kho cov khoom lag luam khoom noj, nrog rau cov uas npaj rau kev sib cuag nrog menyuam yaus (khoom ua si, tais diav).

Qee zaum kev tshawb nrhiav hloov pauv yog qhov laj thawj niaj hnub: qhov tsis muaj cov khw tsim khoom nyob ze, tsis muaj peev nyiaj txaus - hauv qhov no, nws yooj yim dua los nrhiav qhov kev xaiv uas muaj rau ib tus tswv yam tsis muaj kev tshawb fawb ntxiv thiab kev nqis peev.

Thaum xaiv lwm txoj hauv kev rau epoxy, nws yog ib qho tseem ceeb uas yuav tau xav txog ntau qhov kev xav tau uas cov tshuaj lom neeg yuav tsum muaj

1. Muaj peev xwm ntawm polymerization nrog kev hloov pauv mus rau lub xeev tshiab ntawm kev sib sau ua ke . Tsis tsuas yog kev sib xyaw oligomeric muaj cov khoom zoo li no.
2. Tiv taus hnav thiab rhuav . Kev hloov pauv yuav tsum tuaj yeem tiv taus cov neeg kho tshuab thiab lwm yam kev nyuaj siab thaum tseem ruaj khov.
3. Tshuaj lom neeg kuj . Tom qab polymerization, cov khoom yuav tsum tsis txhob hnov qab nrog cov kua qaub thiab alkaline media, hloov nws cov yam ntxwv hauv qab lawv cov cawv. Tib lub sijhawm, hauv acetone lossis lwm yam esters, nws yuav tsum yaj yam yam tsis muaj nag lossis daus.
4. Kev tiv thaiv ya raws siab Kev tsis txaus rau dej thiab lwm yam kua yog qhov zoo ntawm epoxy.
5. Tsis muaj cov pa phem txaus ntshai thaum ua haujlwm nrog cov khoom . Cov muaj pes tsawg leeg yuav tsum tsis txhob muaj cov sib txuas uas xav tau tshwj xeeb rau kev ua haujlwm nrog lawv.
6. Lub tshuab muaj zog siab . Thaum tsim cov kab kua nplaum, cov khoom siv yuav tsum tiv taus lub zog tensile tseem ceeb.
7. Tsis muaj shrinkage thiab deformation . Nws yog ib qho tseem ceeb uas cov ntaub ntawv khaws cov cim geometric tshwj xeeb.

Tag nrho cov yam ntxwv no twb muaj epoxy cob. Thaum nrhiav kev hloov pauv, qee zaum koj yuav tsum tau txiav txim siab txhawm rau kom tau txais cov txiaj ntsig zoo ib yam li kev ua ntawm cov khoom siv thoob ntiaj teb.

Tab sis feem ntau, nrog rau kev mob siab rau, nws tseem tuaj yeem nrhiav lwm txoj hauv kev daws teeb meem.

Analogs

Nrhiav qhov pheej yig sib piv ntawm epoxy resin rau kev muaj tswv yim, rau nchuav cov txee lossis ua cov khoom sab hauv tsis zoo li yuav ua haujlwm. Hauv tsev, cov tshuaj uas muaj peev xwm ua kom polymerize tau, yog qhov txawv los ntawm cov qauv pob tshab thiab lub zog yog qhov kev xaiv zoo . Rau kev siv tes ua, kev tsim cov hniav nyiaj hniav kub, kev hloov pauv ntawm kev sib tsoo, polishing, thiab lwm yam kev ua haujlwm kuj tseem yog qhov tseem ceeb. Thaum tsim cov khoom lag luam loj - lub rooj, lub teeb - yuav tsum tau them nyiaj ntau dua rau qhov nrawm ntawm nws cov tawv thiab qhov sib npaug ntawm cov khoom. Qee zaum qhov zoo sib xws tseem dhau los ua qhov tsis zoo dua li cov epoxy cob qub, tab sis kuj tseem muaj piv txwv ntawm kev ua tiav kev tshawb fawb rau lwm txoj hauv kev.

Cyanoacrylate nplaum

Cov no yog cov sib xyaw "Titan", "Moment", paub zoo rau cov neeg nyiam kos duab, nrog rau superglues nrog cov polymerization tam sim thaum tiv nrog huab cua. Ntawm qhov pom tau zoo ntawm cov nplaum no yog:

• transparency ntawm lub seam tom qab polymerization;
• siab zog lub zog;
• ntau yam kev xaiv - muaj cov tshuaj tiv thaiv tshav kub;
• ya raws tsis kam

Tseem muaj qhov tsis zoo. Dua li ntawm qhov muaj zog nyob rau hauv cov khoom qub, cyanoacrylate hom cov nplaum tsis tiv taus rau kev puas tsuaj thiab kev cuam tshuam. Lawv muaj lub sijhawm txwv lub txee, thiab cov tshuaj lom neeg sib xyaw lawv tus kheej yog tshuaj lom thiab tuaj yeem ua rau muaj kev tsis haum tshuaj.

Ib qho ntxiv, nws yuav tsis ua haujlwm txuas nrog fluoroplastic lossis polyethylene nrog lawv cov kev pab - tsuas yog cov yas lossis cov hlau zoo tib yam.

Silicate kua nplaum

Nws qee zaum piv rau plexiglass, vim tias tom qab ua tiav cov polymerization, qhov sib xyaw tau txais lub zog thiab pob tshab. Ntawm qhov zoo ntawm cov kua nplaum silicate yog:

• tsis tshua muaj toxicity;
• ntau yam;
• hluav taws tsis kam;
• yooj yim ntawm kev npaj.

Qhov tsis zoo yog qhov txwv txwv ntawm kev thov: rau hlau, ceramics, iav, yas, textiles thiab ntoo. Koj tuaj yeem ua kom cov khoom muaj txiaj ntsig zoo los ntawm kev ntxiv cov khoom xyaw ntxiv rau nws. Piv txwv li, sib tov ntawm cov iav tawg thiab asbestos muab cov nplaum silicate txhim kho tshuaj lom neeg ua haujlwm. Thaum sib xyaw nrog mis nyuj casein, nws tau txais kev tiv thaiv ya raws.

Thaum ua ke nrog asbestos thiab quartz xuab zeb, nws tuaj yeem tiv taus alkaline thiab acidic cuam tshuam.

Cov iav ua kua

Kev sib xyaw nquag siv hauv ntau hom kev muaj tswv yim. Nws muaj ntau yam zoo:

• hypoallergenic;
• siab kom qhuav sai;
• du thiab ci ntawm qhov ua tiav.

Tseem muaj qhov tsis zoo. Piv txwv li, cov npe khoom txwv uas "iav iav" muaj cov nplaum zoo. Ib qho ntxiv, nws yog ib qho tseem ceeb kom ua raws li cov txheej txheem thov siv thev naus laus zis ntau dua.

Txij li "iav dej" yog sodium silicate, nws nthuav tawm cov yam ntxwv zoo tshaj plaws thaum siv rau iav . Hauv qhov no, saum npoo yog thawj txheej nrog ib txheej nyias ntawm cov muaj pes tsawg leeg. Tom qab 24 teev, nws yuav nplaum heev - kom tshem tawm cov nyhuv no, so nws nrog cawv tsis tu ncua. Tom qab ntawd koj tuaj yeem thov txheej thib ob. Cov txheej txheej tiav yuav tsis lo ntxiv lawm, nws yuav muab cov polymerization zoo thiab ci ntsa iab ntev.

UV Gel Polish

Qhov tawv ntawm qhov sib xyaw no tshwm sim yuav luag tam sim thaum kho kom raug nrog lub teeb ci ultraviolet. Hauv qhov ntawd cov kua nplaum thiab cov kua roj vanish rau manicure zoo dua li epoxy, uas lawv muaj feem cuam tshuam nrog cov hauv paus ntoo . Tab sis cov kev sib xyaw ua ke no muaj cov yam ntxwv tsis muaj zog. Thaum tsoo lossis lwm yam kev ntxhov siab, lawv poob sai sai lawv cov hniav zoo nkauj, dhau los nrog cov kab nrib pleb thiab nti.

Qhov zoo ntawm cov kua nplaum suav nrog kev yooj yim hauv kev tshem tawm qhov tsis xws luag . Kev kho nrog tshem tawm cov npuas los yog rov kho qhov kev pab them nqi kho mob yuav yooj yim haum rau hauv tsev. Gel txhuam yog qhov zoo rau nchuav cov khoom lag luam nrog cov tuab tuab - cov hniav nyiaj hniav kub, cov khoom dai kom zoo nkauj. Lub teeb UV thiab ob peb feeb yog txaus rau polymerization.

Tsuas yog kev sib xyaw ua kom tiav yog qhov tsim nyog rau kev muaj tswv yim - cov hauv paus tau lo txawm tias tom qab daim ntawv thov catalyst.

Polyester tebchaw

Lawv kuj muaj cov tsos ntawm cov tshuaj uas tom qab nchuav, ua kom sai sai thiab muaj zog. Qhov kev xaiv no muaj ntau qhov zoo, suav nrog lub sijhawm kho kom luv. Hardeners tau suav nrog thaum tsim khoom.

Qhov tsis zoo ntawm polyesters suav nrog qhov txwv qis thiab qhov tshwm sim tshwm sim ntawm kev tsis haum tshuaj.

BF cov nplaum

Lawv feem ntau muag tsis yog raws li lub npe ib txwm muaj, tab sis nyob rau hauv daim ntawv ntawm kev sib xyaw hauv Moment hom thiab zoo li. Kev sib txuas yuav siv qhov chaw raws li qee txoj cai. Nws yog qhov yuav tsum tau ua kom qhuav thawj txheej - txheej txheej, tom qab ntawd siv qhov thib ob, tuav nws li 4-5 feeb, thiab tom qab ntawd nias qhov uas yuav tsum tau nplaum nrog lub zog . Kev ntseeg tau thiab lub zog ntawm kev kho yog nyob ntawm qhov no.

Cov khoom muaj ob peb qhov tsis zoo. BF kua nplaum muaj ntxhiab tsw, nws zoo dua los ua haujlwm nrog nws hauv lub tshuab ua pa. Cov khoom nplaum tseem muaj qhov txwv. Cov sib xyaw ntawm hom no tsis zoo rau kev ua haujlwm nrog iav thiab txhuam cov hlau.

Nrog txoj hauv kev kub ntawm daim ntawv thov, cov kev tsis zoo no yog qib me ntsis.

Yuav hloov tus tawv li cas?

Thaum ua haujlwm nrog epoxy, cov kws paub txuj ci sim npaj ib lub raj mis ntxiv ntawm cov tawv tawv ua ntej, tshwj xeeb tshaj yog yog qhov sib xyaw ntawm cov sib xyaw sib txawv ntawm cov qauv. Qhov laj thawj yog qhov yooj yim: cov khoom siv no los hauv qhov me me thiab tawm sai. Yog tias qhov no tshwm sim ncaj qha hauv chav kawm ntawm kev ua haujlwm, koj tuaj yeem nrhiav lwm txoj hauv kev los npaj cov khoom tsim kho ntawm cov peev txheej kho tsis tau muaj nyob hauv tsev. Cov kev xaiv uas yooj yim tshaj plaws yog:

• orthophosphoric acid;
• ammonia (ammonia cawv);
• benzoyl peroxide tshuaj.

Txhua ntawm cov tshuaj sib xyaw no muaj peev xwm ua kom nrawm ntawm kev kho cov epoxy . Ntxiv mus, cov kws ua haujlwm yooj yim tiv nrog txoj haujlwm siv cov roj qhuav qhuav, ntxiv nws hauv 10% ntawm qhov ntim ntawm tag nrho cov khoom hnyav. Polymerization yuav siv sijhawm ntev heev - txog 24 teev. Thiab koj tseem tuaj yeem ua kom zoo dua qhov ua tiav ntawm cov xim thiab cov kua roj vanish kev lag luam. Piv txwv li, tawv rau txha hniav laus tsheb los ntawm cov khw muag khoom ze tshaj plaws los yog kev sib xyaw "Etal 45M", "Telalit 410".

Qhov hloov pauv tau zoo tshaj plaws rau cov catalysts muab nrog epoxy resin yog cov tshuaj los ntawm pab pawg ntawm aliphatic polyamines - PEPA, DETA . Qhov nruab nrab, lawv qhov kev siv yog li 10%. Yog tias cov tawv tawv qub muab nrog cov oligomer me me, tab sis nws muaj, koj tuaj yeem dilute nws nrog 1% ethyl cawv.

Tsis tsim nyog raws li catalysts rau epoxy acids - nitric, hydrochloric, sulfuric. Lawv muab ua npuas dub, cov khoom hloov pauv tsis tsim nyog siv rau yav tom ntej.