Polyester resin thiab epoxy resin: qhov sib txawv, yam ntxwv thiab tshuaj xyuas

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Epoxy thiab polyester resins, qhov sib txawv ntawm qhov yuav raug txiav txim siab hauv kab lus no, yog nyob rau hauv chav kawm ntawm thermosetting. Qhov no txhais tau hais tias tom qab cov txheej txheem solidification, lawv tsis tuaj yeem rov qab mus rau lub xeev cov kua. Ob qho tib si muaj cov yam ntxwv sib txawv, uas txiav txim siab txog lawv qhov kev thov. Txhawm rau kom nkag siab lub hom phiaj ntawm cov ntaub ntawv no, nws yog qhov tsim nyog los nyeem cov ntsiab lus ntawm polyester thiab epoxy resins.

Epoxy resin

Epoxy yog hais txog cov khoom siv hluavtaws. Hauv nws daim ntawv ntshiab, nws tsis tsim nyog rau kev siv, vim nws tsis tuaj yeem mus rau hauv lub xeev ruaj khov ntawm nws tus kheej. Rau hardening, ib tug tshwj xeeb hardener yog ntxiv rau epoxy resin nyob rau hauv txoj cai proportions.

Kev siv kom raug, koj yuav tsum paub qhov zoo thiab qhov tsis zoo ntawm epoxy. Resin ntawm hom no muaj nuj nqis rau nws cov yam ntxwv muaj zog. Nws tiv taus cov tshuaj lom neeg xws li acids thiab alkalis. Qhov zoo ntawm epoxy muaj xws li: nruab nrabshrinkage, siab hnav tsis kam, thiab zoo heev toughness. Cov txheej txheem solidification tshwm sim nyob rau hauv ntau qhov kub thiab txias, tab sis qhov pom zoo ntau yam hauv lub neej txhua hnub yog los ntawm +18 txog +25 degrees. Txoj kev kub kub yog siv los tsim cov khoom muaj zog uas tuaj yeem tiv taus qhov hnyav.

hom resin no yog siv ob qho tib si hauv kev lag luam thiab hauv tsev. Lub Scope ntawm lawv cov kev siv yog ua wider vim lub creation ntawm tshiab compositions nrog optimized zog. Los ntawm kev sib xyaw ntau hom epoxy resins thiab hardeners, koj tuaj yeem tau txais cov khoom kawg nrog cov yam ntxwv sib txawv kiag li.

Epoxy resin daim ntawv thov

Epoxy hom resin feem ntau yog siv los ua cov khoom sib txuas: ntoo, tawv, hlau thiab lwm yam tsis ntxeem tau. Xws li ib tug muaj pes tsawg leeg yog xav tau nyob rau hauv electronics, mechanical engineering thiab aviation. Fiberglass, uas nquag siv hauv kev tsim kho, kuj yog tsim los ntawm epoxy. Cov resin yog siv rau waterproofing pem teb thiab phab ntsa, nrog rau sab nraud. Cov khoom tiav ua los ntawm fiberglass tom qab sib tsoo thiab ua ntxiv yog nrov hauv kev kho kom zoo nkauj sab hauv.

YEpoxy Hardener

Cov khoom siv Epoxy muaj ob yam, tom qab sib xyaw uas cov txheej txheem polymerization pib. Cov khoom uas ua rau epoxy kho yog hu ua hardener. Nyob ntawm daim ntawv thov ntawm ntau yam resins thiab hardeners, nws yog ua tau kom tau tag nrhosib txawv epoxy mixes.

Qhov feem ntawm cov hardener nyob rau hauv muaj pes tsawg leeg yuav txawv thiab nyob ntawm seb lub hom ntawm resin. Cov tshuaj tiv thaiv polymerization ntawm epoxy resin yog irreversible, uas yog, nws tsis muaj peev xwm yaj cov khoom twb solidified.

Nws yog ib qho yuam kev rau kev xav tias los ntawm overestimating tus nqi ntawm hardener, hardening yuav sai. Ib txoj hauv kev zoo los ua kom cov txheej txheem nrawm yog kom qhov kub thiab txias ntawm qhov sib tov. Kev ua haujlwm kub nce 10 degrees tso cai rau koj kom ceev cov txheej txheem los ntawm 3 zaug. Rau cov hom phiaj no, cov khoom tshwj xeeb yog muag. Tseem muaj cov epoxy sib tov uas ua rau qhov kub thiab txias.

Kev xaiv tsis raug ntawm tus nqi hardener cuam tshuam rau qhov zoo ntawm cov khoom tiav. Ua ntej tshaj plaws, nws lub zog thiab kev tiv thaiv rau cov tshuaj raug txo. Nrog ib tug me me ntawm hardener, qhov sib xws ntawm ib feem yuav nplaum, nrog ib tug ntau tshaj, lub polymer yog tso tawm nyob rau saum npoo ntawm cov khoom. Feem ntau cov resin / hardener piv yog 1/2 lossis 1/1. Ua ntej sib tov, nws raug nquahu kom nyeem cov lus qhia rau qhov tseeb piv ntawm cov khoom.

Polyester resin

Cov khoom no yog tsim thaum lub sijhawm ua cov cawv tshwj xeeb. Lub hauv paus ntawm cov khoom yog polyester. Cov kuab tshuaj tshwj xeeb thiab cov tshuaj inhibitors yog siv los ua kom cov txheej txheem kho kom sai. Nyob ntawm cov khoom siv, nws yuav muaj cov qauv sib txawv thiab cov khoom. Cov khoom tsim tau xav tau kev ua haujlwm ntxiv txhawm rau txhim kho kev tiv thaiv dej thiabultraviolet hluav taws xob. Cov txheej txheej ntxiv kuj tseem txhim kho lub zog cov yam ntxwv ntawm cov khoom. Polyester resin, tsis zoo li epoxy, yog tus cwj pwm los ntawm cov khoom siv hluav taws xob tsawg. Tab sis tib lub sijhawm, polyester yog qhov txawv ntawm tus nqi qis, vim tias cov khoom siv nrov dua.

Cov resins no nquag siv hauv kev tsim vaj tsev, hauv kev lag luam tsheb, kev tsim nkoj thiab cov txheej txheem tsim khoom ntim rau cov tshuaj muaj pes tsawg leeg. Polyester Cheebtsam, thaum tov nrog iav, tsim muaj zog sib txuas. Ua tsaug rau qhov no, cov khoom tsim tau siv rau hauv kev tsim cov canopies, ru tsev rau cov tsev thiab teeb pom kev zoo.

Polyester resin kuj yog ib feem ntawm cov pob zeb dag. Cov yas ua los ntawm cov khoom siv no yog siv rau hauv kev tsim cov qhov rais sills, da dej cabins, partitions thiab cov khoom zoo nkauj. Polyester resins, tsis zoo li epoxy resins, tuaj yeem dyed tau yooj yim.

Qhov txiaj ntsig tseem ceeb ntawm polyester hom resin

Polyester resin, tsis zoo li epoxy, muaj kev ua tau zoo dua. Tom qab sib tov nrog iav, qhov muaj pes tsawg leeg tau txais cov yam ntxwv muaj zog uas tshaj cov hlau. Polyester hardening tsis xav tau tshwj xeeb tej yam kev mob thiab kub. Ua hauj lwm nrog nws yog suav hais tias tsis tshua muaj zog, thiab cov khoom nws tus kheej yog pheej yig dua.

Qhov txawv yog dab tsi?

Thaum nug cov lus nug: "Qhov twg zoo dua, polyester lossis epoxy?", koj yuav tsum nkag siab tias yog vim li cas thiab qhov twg cov resin xav tau. Ob qho khoom siv muaj lawv qhov zoo thiab qhov tsis zoo, thiabQhov kev xaiv zaum kawg nyob ntawm qhov kev siv, nrog rau hom ntawm qhov chaw uas cov resin yuav siv tau.

Epoxy muaj tus nqi siab dua, tab sis nws ruaj khov dua. Muaj cov khoom nplaum zoo heev, nws ruaj khov txuas rau qhov chaw ntawm ntau yam qauv. Epoxy resin txawv ntawm cov khoom polyester nyob rau hauv tsawg shrinkage, zoo mechanical yam ntxwv, thiab hnav tsis kam.

Tib lub sijhawm, tsis zoo li polyester, epoxy xav tau sijhawm ntxiv los ua kom tawv, uas ua rau cov txheej txheem tsim khoom los ntawm cov khoom siv no qeeb. Ua hauj lwm nrog cov resin zoo li no nrog kev ntsuas kev nyab xeeb ntxiv: cov hnab looj tes yuav tsum tau siv thaum ua haujlwm nrog cov khoom ua kua, lub tshuab ua pa yuav tsum tau ua cov khoom siv. Qhov phom sij tsis yog ntau npaum li cov resin nws tus kheej, tab sis cov khoom siv los muab nws lub xeev ruaj khov. Thaum kho ntawm qhov kub thiab txias, muaj qhov ua rau poob qhov viscosity ntawm cov khoom, uas ua rau muaj teeb meem ntxiv hauv kev ua haujlwm.

Cov resin twg zoo dua, epoxy lossis polyester? Kev tshuaj xyuas qhia tau hais tias feem ntau yog thawj zaug siv cov kua nplaum, vim nws cov khoom muaj ntau dua li cov khoom siv polyester. Hauv lwm qhov xwm txheej, nws zoo li muaj kev xav ntau dua los siv polyester-hom resin, uas, thawj zaug, yuav txuag nyiaj, thiab thib ob, yuav ua kom yooj yim rau kev ua haujlwm.

Cov txiaj ntsig ntawm kev siv polyester

Polyester tsis tawm cov tshuaj lom, siv tau yooj yim, thiabkev paub tshwj xeeb tsis tas yuav ua haujlwm nrog nws. Cov muaj pes tsawg leeg yog siv los npog ntau qhov chaw, ua raws li kev kho mob nrog tus neeg saib xyuas lub zog. Nyob rau hauv cov nqe lus ntawm cov khoom nplaum, polyester yog qhov qis dua rau epoxy, thiab nws yog irrational siv nws rau gluing nto. Raws li cov khoom siv rau cov khoom siv kho kom zoo nkauj, nws tsis tsim nyog, vim nws muaj cov khoom siv tsis zoo. Thaum sib tov muaj pes tsawg leeg ntawm polyester, ib tug me me ntawm catalyst yog siv. Cov khoom tawv tawv sai sai, hauv 2-3 teev.

Qhov tiav yog elastic thiab resistant rau dabtsi yog khoov. Lub downside ntawm polyester resin khoom yog flammability. Tsis txhob siv polyester cob rau ib yam khoom uas ua los ntawm epoxy. Txhawm rau kho cov khoom epoxy, nws yog qhov zoo dua los siv nws.

Yuav ua li cas npaj lub ntsej muag kom zoo

Resin tsuas yog siv rau cov chaw uas tau npaj yav dhau los. Thawj kauj ruam yog degreasing nrog ib qho hnyav. Tom qab tshem tawm cov av thiab cov kab mob ntawm cov rog, cov txheej txheem sib tsoo yog nqa tawm. Cov txheej saum toj kawg nkaus raug tshem tawm ntawm qhov chaw ntawm cov khoom siv cov ntawv xuab zeb lossis cov cuab yeej tshwj xeeb. Tom qab ntawd cov txheej txheem tshem tawm plua plav yog nqa tawm. Tom qab ntawd, koj tuaj yeem pib siv cov khoom ua haujlwm.

Kev nyab xeeb

Yuav kom tsis txhob ua rau muaj kev phom sij rau kev noj qab haus huv thaum ua haujlwm nrog cov resins thiab hardeners, nws yog ib qho tsim nyog yuav tsum tau ceev faj txog qhov siab tshaj plaws. Ua tsis tau raws li qhov yooj yimCov kev cai yuav ua rau cov tawv nqaij raug mob, kub hnyiab, lossis lub ntsws puas thaum tuav epoxy lossis polyester resins. Kev txiav txim siab txog kev nyab xeeb tshuaj:

• Tsis txhob siv lub thawv tsim los ua noj.
• Txhua kev tswj hwm yuav tsum tau ua hauv cov khaub ncaws tshwj xeeb thiab hnab looj tes. Ua ntej ua haujlwm ntawm tes yuav tsum tau thov nrog cov tshuaj tiv thaiv. Kev sib tsoo ntawm cov khoom tiav yog nqa tawm hauv lub tshuab ua pa thiab tsom iav tshwj xeeb.
• Yog cov resin tuaj rau ntawm daim tawv nqaij, ntxuav tam sim nrog xab npum lossis cawv.

Cov khoom siv Epoxy yuav tsum tau ua nyob rau hauv qhov chaw muaj cua zoo.