Sealing yog cov cuab yeej siv dav dav tsim nyog rau txhua qhov kev lag luam, tsis yog tsuas yog kev tsim kho, petrochemical, nkoj tsim, tshuab tsim, lub zog, kev thauj mus los, kev tiv thaiv ib puag ncig thiab lwm yam lag luam tsis tuaj yeem ua yam tsis muaj kev sib khi tshuab Aviation, aerospace thiab lwm yam kev lag luam kev lag luam kuj tseem muaj feem xyuam nrog. sealing tshuab.Sealing tshuab yog dav siv nyob rau hauv ntau lub teb, xws li kev cia khoom, kev thauj mus los thiab lub zog hloov pauv.

Qhov tseem ceeb ntawm sealing tshuab qhov kev tshwm sim ntawm sealing tsis ua hauj lwm yog heev loj, lub teeb ntawm to, uas ua rau nkim zog thiab kev pab, qhov hnyav yuav ua rau lub lag luam tsis ua hauj lwm, thiab txawm tsim hluav taws kub, tawg, ib puag ncig muaj kuab paug thiab lwm yam yuav ua rau muaj kev phom sij rau tus kheej kev nyab xeeb. .

Nrog rau txoj kev loj hlob ntawm kev tshawb fawb thiab thev naus laus zis, kev ua haujlwm ntawm cov qauv sealing yog qhov hnyav dua.Raws li qhov kub thiab txias, siab thiab corrosivity ntawm cov kua ntim tau zoo heev, cov khoom siv sealing ib txwm muaj xws li kev xav, hemp, asbestos, putty thiab lwm yam tsis tuaj yeem ua tau raws li kev siv, thiab maj mam hloov los ntawm roj hmab thiab lwm yam khoom siv hluavtaws.

Cov khoom siv hluavtaws xws li roj hmab feem ntau yog macromolecular polymers, nyob rau hauv cov pab pawg ua haujlwm nrog cov yam ntxwv sib txawv (xws li chlorine, fluorine, cyano, vinyl, isocyanate, hydroxyl, carboxyl, alkoxy, thiab lwm yam) ua cov ntsiab lus sib txuas.Nyob rau hauv qhov kev txiav txim ntawm catalyst, curing agent, los yog kub thiab siab zog hluav taws xob, macromolecule hloov los ntawm linear qauv thiab branched qauv mus rau spatial network qauv, cov txheej txheem no hu ua curing.Vulcanized roj hmab los yog lwm yam khoom siv hluavtaws, macromolecules poob qhov qub txav, hu ua elastic deformation ntawm elastomer.

Cov Roj Hmab thiab cov khoom siv hluavtaws yog: roj hmab ntuj, styrene-butadiene, neoprene, butadiene roj hmab, Ethylene propylene roj hmab, butyl roj hmab, polyurethane roj hmab, acrylate roj hmab, fluorine roj hmab, silicone roj hmab thiab lwm yam.

6 Performance Indexs Rau Kev Txiav Txim Cov Khoom Siv Sealing Zoo

1. Tensile Performance

Tensile zog yog cov khoom tseem ceeb tshaj plaws ntawm cov ntaub ntawv sealing, nrog rau lub zog tensile, tas li tensile kev nyuaj siab, elongation ntawm so thiab mus tas li deformation ntawm so.Lub zog tensile yog qhov siab tshaj plaws ntawm cov qauv uas tau ncab mus rau pob txha.Kev ntxhov siab tsis tu ncua elongation (modulus ntawm qhov elongation tas li) yog qhov kev ntxhov siab mus txog ntawm qhov teev elongation.Elongation yog deformation ntawm ib qho qauv uas tshwm sim los ntawm lub zog tensile.Qhov piv ntawm qhov elongation nce mus rau qhov qub ntev yog siv.Lub elongation ntawm qhov tawg yog qhov elongation ntawm qhov tawg ntawm cov qauv.Lub tensile mus tas li deformation yog qhov seem deformation ntawm cov kab kos tom qab tensile tawg.

2. Hardness

Hardness ntawm cov ntaub ntawv sealing tsis kam mus rau sab nraud siab rau hauv lub peev xwm, tab sis kuj yog ib qho ntawm cov kev ua tau zoo ntawm cov ntaub ntawv sealing.Lub hardness ntawm cov khoom muaj feem xyuam rau lwm yam khoom rau qee yam.Qhov siab dua qhov hardness, lub zog ntau dua, qhov qis dua qhov elongation, qhov zoo dua qhov hnav tsis kam, thiab qhov tsis zoo ntawm qhov kub tsis kam.

3. Compressibility

Vim lub viscoelasticity ntawm cov khoom siv roj hmab, lub siab yuav txo nrog lub sij hawm, uas qhia tau hais tias raws li compressive kev ntxhov siab so, thiab tsis tuaj yeem rov qab mus rau qhov qub zoo tom qab tshem tawm lub siab, uas qhia tau hais tias compression mus tas li deformation.Nyob rau hauv qhov kub thiab roj nruab nrab qhov tshwm sim no yog pom tseeb dua, qhov kev ua tau zoo yog ncaj qha ntsig txog cov khoom siv sealing.

4. Kev ua haujlwm kub qis

Ib qho kev ntsuas siv los ntsuas qhov ntsuas kub tsis tshua muaj ntawm cov roj hmab foob Cov nram qab no ob txoj hauv kev ntsuas qhov ntsuas kub qis: 1) qhov ntsuas kub qis qis: cov khoom sib khi stretched mus rau ib qho ntev, tom qab ntawd tsau, ceev kom txias rau qhov txias txias. Hauv qab no, tom qab ncav cuag qhov sib npaug, xoob qhov ntsuas qhov ntsuas, thiab ntawm qee qhov cua sov, sau cov style retraction 10%, 30%, 50% thiab 70% thaum qhov kub thiab txias yog qhia raws li TR10, TR30, TR50, TR70.Cov khoom siv tus qauv yog TR10, uas muaj feem xyuam rau lub brittleness kub ntawm roj hmab.Tsis tshua muaj kub yooj yooj yim: Tom qab cov qauv yog khov rau lub sij hawm teev ntawm qhov ntsuas kub tsawg, cov qauv yog khoov rov qab thiab tawm raws li lub kaum sab xis uas tau teev tseg los tshawb xyuas lub peev xwm sealing ntawm lub foob tom qab rov ua haujlwm ntawm dynamic load ntawm qhov kub thiab txias.

5. Roj los yog nruab nrab tsis kam

Ntxiv nrog rau kev sib cuag nrog cov khoom siv roj foob, ob chav esters, roj silicone, hauv kev lag luam tshuaj qee zaum hu rau acid, Alkali thiab lwm yam corrosive media.Ntxiv rau corrosion nyob rau hauv cov xov xwm no, nyob rau hauv kub kub kuj yuav ua rau kom expansion thiab lub zog txo, hardness txo;Nyob rau tib lub sijhawm, cov khoom siv sealing plasticizer thiab cov khoom soluble tau raug rub tawm, ua rau lub cev hnyav, ntim txo, uas ua rau muaj dej ntws tawm.Feem ntau, ntawm qhov kub thiab txias, qhov kev hloov ntawm Mass, ntim, lub zog, elongation thiab hardness tom qab muab tso rau hauv nruab nrab rau qee lub sijhawm tuaj yeem siv los ntsuas cov roj tsis kam lossis nruab nrab tsis kam ntawm cov khoom sib khi.

6. Kev laus tsis kam

Sealing cov ntaub ntawv los ntawm cov pa oxygen, ozone, tshav kub, lub teeb, dej, mechanical kev nyuaj siab yuav ua rau kev ua haujlwm tsis zoo, hu ua kev laus ntawm cov ntaub ntawv sealing.Kev laus Resistance (tseem hu ua huab cua tsis kam) tuaj yeem siv tom qab kev laus style ntawm lub zog, elongation, hardness hloov los qhia tias qhov me me qhov hloov pauv, qhov zoo dua qhov kev laus.

Nco tseg: weatherability yog hais txog cov txheej txheem ntawm kev laus, xws li fading, discoloration, cracking, hmoov thiab lub zog txo ntawm cov khoom yas vim muaj kev cuam tshuam ntawm sab nraud xws li tshav ntuj raug, kub hloov, cua thiab los nag.Ultraviolet hluav taws xob yog ib qho tseem ceeb ntawm kev txhawb nqa cov yas yas.