Nruab nrab silicone sealant: ib tug txheej txheem cej luam ntawm hom, specifications thiab xyuas

Ua ntej lub invention ntawm silicone sealant pob qij txha uas muaj cov qhob mastics, tag nrho cov hom ntawm putty compositions ntawm bitumen, uas twb tsis tau kom tau raws li tag nrho cov uas yuav tsum tau. Thaum lub lag luam nkag mus hauv lub tshiab cov ntaub ntawv uas, ua tau zoo tag nrho cov xaiv ntawm cov kho yooj yim zog, raws li zoo raws li lawv zoo tau nce.

rau cov ntaub ntawv

silicone sealant qauv tsa ib tug khov sib tov, uas yog zoo heev rau kev sib khi pob qij txha thiab tej kab nrib pleb, gluing thiab sealing spare qhov chaw thiab ntau qhov chaw. Thaum cov duab no yog them nto, lawv nrhiav tau kev tiv thaiv los ntawm cov nyom tej yam thiab ya raws.

Lub ntsiab ntawm ntau yam silicone sealant muaj pes tsawg leeg

Nruab nrab silicone sealant yog dej num los ntawm cov kev tivthaiv muaj pes tsawg leeg. Nyob rau hauv lub chaw ua khoom ntawm nws muaj peev xwm ntxiv txawv tshuaj. Piv txwv li, ib tug plasticizer ua rau cov elastic cov ntaub ntawv uas, thaum lub sij hawm viscosity nws imparts vulcanizer. Raws li ib lub hauv paus protrudes roj hmab, thiab cov siab tawv ntawm muaj pes tsawg leeg yog muaj ib tug saum npoo primer.

Producers zog tau tau tiav los ntawm ib tug amplifier, tab sis cov xim ntawm lub sib tov yuav tom qab rau qhov sib ntxiv ntawm muab tub lim. Nruab nrab silicone sealant tej zaum yuav ib tug-tivthaiv los yog ob-tivthaiv. Tus thawj hom yog feem ntau siv nyob rau hauv lub kho thiab kev tsim kho, thaum lub sij hawm ob-tivthaiv mixtures yog npaj rau kev siv nyob rau hauv kev lag luam.

Cov muag khoom yuav pom alkaline, acid thiab nruab nrab sealants. Tus thawj yog ib tug sib tov ntawm tshwj xeeb cov hom phiaj, thiab raws li lawv bases protrude amines. Yog hais tias ua ntej koj compound uas yog sawv cev los ntawm tsab ntawv "A", ces koj yuav tsum paub hais tias cov sealant yog acid, nws muaj ib tug uas tsis muaj nqi thiab ntau yam nyob rau hauv kev siv. Thaum raug ua raws li ib lub hauv paus acetic acid tsis hnov tsw uas yog tso tawm thaum lub sij hawm lub solidification ntawm qhov loj. Ib tug disadvantage ntawm xws niam yog tus incompatibility nrog nonferrous co, txij li thaum lawv leeb xeb txheej txheem. Nws tsis pom zoo kom siv acidic sealants marble hais, raws li tau zoo raws li MAAs cov ntaub ntawv, uas muaj cov alkaline cov khoom xyaw. Nruab nrab silicone sealant ua ke nrog tej chaw uas yog ua los ntawm cov khoom, nws yog tshwm sim los ntawm kev tivthaiv muaj pes tsawg leeg, raws li nyob rau hauv dej cawv los yog ketoxime.

Classification nruab nrab sealants rau fillers thiab additives

Thaum xaiv tej hom sealant, koj yuav tsum xyuam xim rau cov additives uas yog siv nyob rau hauv qhov siv thiab ua formulations cov ntaub ntawv. Rau hnub tim, distinguishes 4 hom additives, ntawm lawv:

• dyes;
• cov neeg kho tshuab fillers;
• extenders;
• fungicides.

Lub pigments yog ntxiv nyob rau hauv lub ntau lawm, txawm li cas los, tom qab so qhuav lub sib tov yog tsis dawb lias. Fillers muab txhua yam adhesion nrog tus nplaim qhov loj. Thaum nws los txog rau cov neeg kho tshuab ntxiv, ces yuav tsum muaj xws li cwj mem av dawb thiab quartz hmoov av. Extenders nyob rau hauv cov ntaub ntawv ntawm lub sealants yog tej yam ntuj tso keeb kwm, thiab lawv yuav tsum tau txo lub viscosity ntawm lub silicone. Fungicides tua fungi thiab pwm. Yuav kom nthuav lub tshav pob ntawm kev siv yuav tsum nyob nruab nrab sealant, xav tias qhov xwm ntawm tus additive.

Xyuas ntawm Nruabnrab roj hmab Sealant

Nruab nrab silicone sealant muaj ib co nta tshwj xeeb: nws yog mos mos thiab ywj. Nyob rau hauv cov kev phem ntawm no, siv nyob rau hauv qhov siv thiab ua heev check cov ntaub ntawv rau lub pob zeb ntais hom, quartz thiab xuab zeb. Ntawm cov copolymers ua, uas yog ib feem. Tau txais kev pab paim ob peb zoo siv tsis silicone sealants, uas yog, tus muaj peev xwm mus ncab, high degree ntawm lub dag lub zog, stability rau tshav ntuj, ib tug siab adhesiveness, Thaum tshav kub kub kuj, kuj rau tej yam tseem ceeb thiab biostability.

Cov neeg cam hais tias lub peev xwm mus ncab tso cai rau kev siv ntawm cov formulations nyob rau hauv lub rooj noj pob qij txha. Vim lub high degree ntawm adhesion, xws mixtures yuav siv tau ntawm cov iav ntsiab, ceramics, hlau, ntoo thiab yas. Tom qab so qhuav, silicone sealant nruab nrab pob tshab yuav tsum tau raug mus txhoj puab heev tu Cheebtsam, thaum nws tsis poob nws cov khoom. Yog hais tias nws yog ib tug kub-resistant ntau yam uas nws yuav tsum tau kom muaj lawv lub zog txawm nyob rau hauv tej yam kev mob ntawm ntau yam kub uas nws txawv ntawm -50 mus +300 ° C.

Rau cov yog vim li cas hais tias ib tug sib tov ntawm cov ntaub ntawv txig yauv tej yam uas lwm yam, lawv yuav tsum tau siv tsis tau tsuas yog nyob rau hauv tab sis kuj sab nraum lub thaj chaw. Tom qab daim ntawv thov, koj yuav tsis txhob ntshai hais tias cov sealant los yog nyob ib sab chaw yuav kab mob los yog tuaj pwm.

tsis zoo xyuas

Huv ib yam roj hmab Sealant muaj ib tug nruab nrab, cov neeg siv lub tswv yim, thiab ib co tsis zoo. Cov lawv yuav tsum yuav tseem ceeb:

• tsis muaj peev xwm yuav siv tau rau ntub chaw;
• tsis muaj tsuas muaj peev xwm;
• insufficiently siab adhesion nqaim phiaj polypropylene.

Tsuas sealant nto tom qab nws solidification yog tsis tau thaum nyob rau hauv lub ntoos sib xyaw muaj ib tug loj npaum li cas ntawm cov organic tshuaj. Tab sis cov tsis muaj adhesion tau cai thiab tseem ntawm cov phiaj, uas yog ua los ntawm polyethylene, polycarbonate los yog fluoroplastic. Raws li cov neeg siv thov tshuaj tej zaum yuav mus yuav ib tug ntau kim sealant, uas yog npaj rau kev siv.

Txheej txheem cej luam ntawm lub hom "Caij" yam ntxwv tsis silicone sealant

Sealant "Caij" nruab nrab silicone muaj tsis muaj tsw thiab yuav tsum muaj ntaub ntawv ntawm ib tug kub xws li los ntawm +5 rau +40 ° C. Thaum tshav kub kub kuj xws li los ntawm -40 mus +150 ° C. Thaum kev sib tawg ntawm cov muaj pes tsawg leeg yog ncua los ntawm 200% thiab nws ceev tej zaum yuav txawv los ntawm 0.98 mus 1.00 g / cm ^3. Nyob rau ntawm ib puas feem pua elongation modulus yog 0.3 Mpa. Cov sib tov undergoes dej zoo, thiab cov zaj duab xis tom qab deposition ntawm ib tug kub ntawm +23 ° C tsim tom qab 15 feeb.

solidification nqi ntawm tsib caug feem pua av noo yog hais txog 2 hli ib hnub twg. Qhov no silicone sealant nruab nrab dawb yog tsim los rau kev sib khi thiab installation ntawm tsom iav, cua tshuab thiab khov nab kuab. Nws tsis pom zoo kom siv ib tug sib tov los yog nyob rau hauv lub ntuj pob zeb yuav muab taig.

nqi ntawm

Ntawm kev muag khoom hnub no muaj peev xwm yuav nrhiav tau nyob nruab nrab silicone sealants nyob rau hauv ib tug ntau yam. Cov feem nrov yog TYTAN Professional, leej twg yuav tau them 165 rubles. Cov sib tov yuav ua tau grey, xim av, dub, dawb los yog tsis muaj kob. Yog hais tias peb yuav sib tham hais txog ib tug universal ib feem ntawm PUTECH, nws yuav tau them rau nws 123 rubles.

xaus

Nruab nrab silicone sealant, tus nqi ntawm uas tau raug hais los saum no, yuav siv nyob rau hauv lub tsheb ua lag ua luam, kev tsim kho, los yog rau tshwj xeeb daim ntawv sau npe. Universal muaj pes tsawg leeg, piv txwv li, yuav siv tau rau me kho nyob rau hauv ib lub tsev. Nws yuav siv tau thaum sib khi thiab gluing teeb, mouldings los yog teeb.

Tab sis silicone sealant tsheb, uas yog feem ntau dub, yog rau cov tej hauj lwm yuav hloov tau lub gaskets yog nyob rau hauv lub tsheb. Luv luv nyob rau hauv no sib tov yuav ua rau qhov kub thiab txias mus +300 ° C. Thaum ua ntawv thov cov muaj pes tsawg leeg tsis ntws, thiab nyob rau hauv kev siv tsis tau laus.