Polyester cob thiab epoxy cob: tsis zoo li, nta thiab xyuas

Epoxy thiab polyester resins, sib txawv uas yuav muab suav hais tias nyob rau hauv no tsab xov xwm mus rau lub chav kawm ntawv ntawm thermosetting. Qhov no txhais tau tias tom qab lub solidification txheej txheem lawv yuav tsis raug xa rov qab mus rau lub kua hauv lub xeev. Ob formulations muaj ntau yam ntxwv, uas txiav txim lawv tau. Yuav kom to taub lub ntsiab ntawm cov ntaub ntawv yog ib pab tau mus ntsib cov kev ntsuam xyuas ntawm epoxy thiab polyester resins.

epoxy

Epoxy hais txog ntaub ntawv ntawm cov khoom cua keeb kwm. Nyob rau hauv cov ntshiab daim ntawv nws yog tsis haum rau kev siv raws li nws tus kheej mus rau lub khoom hauv lub xeev mus yog tsis muaj peev xwm. Yuav kom ncuav nyob rau hauv lub epoxy cob ntxiv nyob rau hauv qhov tseeb proportions tshwj xeeb hardener.

Rau cov kev siv yog tsim nyog los paub qhov pros thiab cons ntawm ib tug epoxy cob. Lub cob ntawm no hom yog prized rau nws lub zog yam ntxwv. Nws yog resistant rau kev txhoj puab heev tshuaj tebchaw xws li acids thiab alkalis. Qhov zoo ntawm cov epoxy muaj xws li: mob loj tsawv shrinkage, lub siab coj tsis kam, thiab yav tom ntej durability. solidification txheej txheem tshwm sim ntau tshaj ib tug ntau ntau yam kub, tab sis yog pom zoo nyob rau hauv lub neej luv los ntawm +18 rau +25 degrees. Kub ncuav txoj kev yog siv nyob rau hauv qhov siv thiab ua zog lub zog muaj peev xwm ntawm tiv huab loads.

Qhov no hom ntawm resins siv nyob rau hauv kev lag luam thiab nyob rau hauv lub tsev. Lub Scope ntawm lawv cov kev siv yog ua ntau lug los ntawm cov creation ntawm tshiab compositions nrog optimized zog. Tshuav rau lub mixing ntawm ntau hom ntawm epoxy resins thiab hardeners yuav tau ua ib tug zaum kawg khoom uas heev txawv ntxwv.

Thov epoxy cob

Epoxy hom cob yog feem ntau siv raws li ib tug cov ntaub ntawv uas rau tsevneeg chaw: ntoo, tawv, hlau thiab lwm yam uas tsis yog-ntxeem tau. Xws li ib tug muaj pes tsawg leeg thov nyob rau hauv electronics, engineering thiab aircraft. Fiberglass, nquag siv nyob rau hauv kev tsim kho, kuj ua los ntawm epoxy. Lub cob siv rau waterproofing plag tsev thiab phab ntsa, xws li sab nraud. Tiav lawm cov khoom ua los ntawm fiberglass, tom qab sib tsoo thiab ua ntawm ntau nrov nyob rau hauv dai kom zoo ntawm interiors ntawm thaj chaw.

Tua neeg sawv cev rau epoxy cob

Epoxy khoom muaj ob lub Cheebtsam, uas tom qab nws lub polymerization txheej txheem yuav pib. Tivthaiv yuav ua tau rau solidification ntawm lub epoxy cob yog hu ua hardener. Nyob rau kev siv ntau yam resins thiab hardeners yuav tsum npaj kom txhij heev tsis zoo li epoxy sib tov.

Cov kev faib ua feem ntawm lub curing neeg sawv cev nyob rau hauv muaj pes tsawg leeg yuav sib txawv thiab nyob feem nyob rau hauv qib ntawm cob. epoxy cob polymerization cov tshuaj tiv thaiv yog irreversible, piv txwv li lub qhuav tau solidified khoom tsis tau.

Nws yog ib tug yuam kev kom ntseeg tau tias thaum Inflating tus nqi ntawm cov hardener hardening yuav tsum tau ceev. Ib tug zoo txoj kev uas yuav kom cov txheej txheem - ua qhov kub ntawm lub sib tov. Ua lub kev khiav hauj lwm kub ntawm 10 degrees yuav leeb tus txheej txheem 3 lub sij hawm. Tshwj xeeb Cheebtsam rau cov hom phiaj nyob rau hauv kev ua lag luam. Muaj kuj mixtures ntawm epoxy, solidifying txo kub.

Tsis yog xaiv ntawm tus nqi ntawm cov hardener muaj ib tug nyhuv dejnum rau qhov zoo ntawm cov khoom tiav. Feem ntau txo nws lub zog thiab kuj mus tshuaj. Thaum ib tug me me npaum li cas ntawm hardener yog nplaum taub hau qhov chaw, nrog ib tug dhau heev lawm ntawm polymer rau cov khoom nto faib. Qhov feem ntau heev proportions ntawm cob / hardener yog 1/2 los yog 1/1. Ua ntej nws, nws yog pom zoo kom nyeem cov lus qhia rau kom yog tivthaiv ratio.

polyester cob

Xws li ib tug cob yog tsim nyob rau hauv lub ua ntawm alcohols tshwj xeeb lub hom phiaj. Lub hauv paus cov ntaub ntawv uas yog polyester. tshwj xeeb kuab tshuaj thiab inhibitors siv rau accelerate lub curing txheej txheem. Nyob rau hauv daim ntawv thov ntawm cov khoom, tej zaum nws yuav muaj ib tug txawv qauv thiab zog. Cov uas ua khoom xav tau kev pab ntxiv kho mob tswj kev txhim kho kev tiv thaiv tiv thaiv dej thiab UV tawg. Ntxiv txheej kuj tej lub dag lub zog yam ntxwv ntawm cov khoom. Polyester cob, tsis zoo li epoxy, yog yus muaj los ntawm cov uas tsis muaj txhua yam khoom. Tab sis nyob rau tib lub poliefirku nws muaj ib tug uas tsis muaj nqi, ua tsaug rau uas cov ntaub ntawv uas yog nrov dua.

Tej resins yog siv feem nyob rau hauv lub tsev siv, automotive, shipbuilding thiab zus tau tej cov ntim rau tshuaj lom neeg tebchaw. Polyester Cheebtsam thaum tov nrog iav los tsim siab zog compound. Vim lub resulting cov ntaub ntawv uas yog siv nyob rau hauv qhov siv thiab ua awnings, ru tsev rau vaj tse thiab teeb pom kev zoo.

Lub polyester cob kuj muaj nyob rau hauv nyob tus yeees ntawm cov khoom cua pob zeb. Ua siv no tivthaiv yas yog siv nyob rau hauv qhov siv thiab ua Qhov rai, da dej Certificate, partitions thiab hniav ntsiab. Polyester resins, tsis zoo li epoxy, yooj yim uas tseg tau.

Lub ntsiab zoo ntawm polyester hom cob

Polyester cob, tsis zoo li epoxy, muaj ib tug ntau dua practicality. Tom qab nws, lub iav muaj pes tsawg leeg ua lub dag lub zog yam ntxwv, tau siab tshaj lub thaj chaw ntawm lub hlau. Rau hardening poliefirki yuav tsum tau tsis muaj tshwj xeeb tej yam kev mob thiab kub. Ua hauj lwm nrog nws yog hais tias yuav tsawg zog-intensive, thiab cov khoom yog cheaper.

Yuav ua li cas yog qhov txawv?

Nug cov nqe lus nug: "Uas yog ib qho zoo, poliefirka los yog epoxy?", Koj yuav tau to taub yog vim li cas thiab nyob qhov twg cov cob yog yuav tsum tau. Ob ntaub ntawv muaj lawv pros thiab cons, thiab qhov kawg xaiv nyob rau hauv lub tej yam kev mob ntawm kev siv, raws li tau zoo raws li lub hom nto rau uas tus cob yuav tsum muaj ntaub ntawv.

Epoxy muaj ib tug ntau dua tus nqi, tab sis nws yog ntau check. Muaj zoo heev nplaum thaj chaw rau nruj nreem txuas txawv nto qauv. Epoxy cob sib txawv ntawm cov polyester khoom negligible shrinkage, zoo cov neeg kho tshuab cov yam ntxwv thiab kuj hnav.

Yog li, tsis zoo li poliefirki, epoxy xav tau ntau lub sij hawm rau solidification, uas slows tus txheej txheem ntawm manufacturing qhov chaw ntawm no cov ntaub ntawv uas. Ua hauj lwm nrog xws li ib tug cob yog nrog los ntawm heightened kev ruaj ntseg: thaum ua hauj lwm nrog cov kua cov ntaub ntawv uas yog tsim nyog los siv cov hnab looj tes rau tuav khoom khoom xav tau ib tug qhov ncauj. Cov kev txaus ntshai tsis yog li ntawd ntau npaum li cas cob li lub Cheebtsam siv tau los ua qhov khoom hauv lub xeev s. Thaum solidified nyob rau hauv kub tej yam kev mob muaj yog ib lub caij nyoog ntawm poob viscosity khoom uas tsim ntxiv los xij nyob rau hauv lub chaw ua hauj lwm.

Yuav ua li cas zoo dua cob, epoxy los yog polyester? Xyuas hais tias nyob rau hauv Feem ntau, thawj yog siv raws li ib tug nplaum, raws li nws cov khoom muaj ntau dua uas ntawm cov khoom ntawm polyester. Nyob rau hauv lwm yam teeb meem, ib tug ntau muaj kuab siv ib tug polyester cob yam, uas, firstly, yuav txuag, thiab tib ob, piv cov ua hauj lwm.

Qhov zoo ntawm kev siv poliefirki

Poliefirka tsis tso tshuaj lom hais, ib qho yooj yim mus siv, thiab kev txawj ntse mus ua hauj lwm nrog nws tsis yog yuav tsum tau. Muaj pes tsawg leeg siv rau txheej ntau yam chaw nrog ib tug tom ntej ua txhais tau tias, uas tsub kom lub dag lub zog. Raws li cov nplaum thaj chaw ntawm epoxy poliefirka ho ua tsis tau zoo, thiab siv nws rau gluing chaw irrationally. Raws li ib tug cov ntaub ntawv uas rau cov hniav khoom tsis haum, raws li nws muaj ib tug uas tsis muaj cov neeg kho tshuab cov yam ntxwv. Thaum nws nyob tus yeees ntawm poliefirki thov ib tug me me npaum li cas ntawm lub hauv paus. Khoom hardens sai sai, tsis pub dhau 2-3 teev.

Lub tiav lawm daim yog elastic thiab resistant mus dabtsi yog khoov. Rho tawm cov khoom ntawm lub polyester cob yog combustibility. Tsis txhob siv polyester cob rau ib tsab xov xwm uas ua los ntawm epoxy. Yuav kom kho cov khoom ntawm ib tug epoxy khoom yog zoo dua siv lub tib lub.

Yuav ua li cas kom zoo zoo npaj cov nto

Lub cob yuav tsum tau ua ntawv thov tsuas yog nyob rau ib lub pre-npaj qhov chaw. Thawj kauj ruam yog nqa tawm siv ib tug hnyav degreasing. Tom qab tshem tawm cov av thiab roj polishing txheej txheem yog ua. Txij li thaum cov khoom nto nrog ntwav txhuam ntoo los yog ib tug tshwj xeeb cov cuab tam yog raug tshem tawm topsheet. Ces, ib tug txheej txheem ntawm tshem hmoov av. Tom qab ntawd, daim ntawv thov yog ua tau rau pib cov ua hauj lwm tivthaiv.

kev huam yuaj kev tiv thaiv

Nyob rau hauv thiaj li tsis mus ua rau raug mob thaum ua hauj lwm nrog resins thiab hardeners, nws yog tsim nyog los noj lub siab tshaj plaws ceev faj. Tsis ua raws li tej yam yooj yim cov kev cai yuav ua tau rau tawv nqaij puas tsuaj, kub nyhiab los yog mob ntsws muaj nuj nqi teeb thaum ua hauj lwm nrog epoxy los yog polyester resins. Nta kev nyab xeeb thaum ua hauj lwm nrog cov tshuaj:

• Tsis txhob siv ntim npaj rau ua noj ua haus.
• Tag nrho cov manipulations yuav tsum tau nqa tawm nyob rau hauv tshwj xeeb khaub ncaws thiab hnab looj tes. Ua ntej ua hauj lwm rau ntawm caj npab tshuaj pleev thaiv hnub yuav tsum tau mus thov. Polishing ntawm tiav lawm cov khoom yog nqa tawm nyob rau hauv qhov ncauj thiab tshwj xeeb tsom iav.
• Nyob rau hauv cov ntaub ntawv ntawm lub cob ntog rau ntawm daim tawv nqaij nws yuav tsum tau ntxuav nrog xab npum tsis muaj kev ncua los yog huv si haus dej haus cawv.

Manipulation ntawm lub epoxy Cheebtsam yuav tsum tau nqa tawm nyob rau hauv ib tug zoo-ventilated cheeb tsam.