Cov ntxiv yog cov khoom siv raw tseem ceeb hauv kev lag luam roj hmab. Txawm hais tias tus nqi me me, cov nyhuv loj heev. Polyurethane elastomers tsis tuaj yeem sib cais los ntawm kev sib ntxiv los ntawm synthesis ua cov txheej txheem, hloov kho thiab kev tiv thaiv system thiab kev tiv thaiv plaub yam ntawm cov auxilies.
Synthetic Pab
01 catalyst thiab inhibitor
Nyob rau hauv synthesis ntawm polyurethane elastomers, thiaj li yuav nrawm nrawm, feem ntau yog siv cov tshuaj tiv thaiv kab mob Qhov tseem ceeb tshaj; Orgototin suav nrog caprylots stannous, dibutyl Tin dingaurate thiab li ntawd. Ib qho ntxiv, muaj cov organic mercury, cov hmoov txhuas, nrog organic txhuas thiab Mercury ua captlate thiab penyylmuric acetate. Organic dibasic acids xws li adipic acid thiab azelaic acid tuaj yeem siv los ua catalysts rau nchuav roj hmab polyether polyurethane.
02 Saw Extender thiab Saw Extangining Tus Neeg Sawv Cev
Nyob rau hauv synthesis Elasteane Elastomers, txuas ntxiv yog hais txog cov diols thiab binary iines uas yog qhov tseem ceeb rau cov saw kev loj hlob ntawm cov saw kev loj hlob. Cov saw hlau txuas ntxiv yog hais txog qhov sib txuas, xws li peb txoj saw hlau tsis txaus ntseeg, thiab lwm yam tshuaj tua kab mob Sib xyaw polyurethane elastomers tuaj yeem siv cov diols lossis allyl ether diols.
Modifier tuav tus neeg sawv cev
Qee qhov kev sib ntxiv no tuaj yeem txhim kho kev ua tau zoo thiab pom ntawm cov khoom lag luam, thiab qee tus tuaj yeem txhim kho cov txheej txheem ua haujlwm, hnav cov roj pleev, hlais, colorant thiab tso tus neeg sawv cev.
01 Yas Yas
Kevizer yog feem ntau yog siv hauv polyurethane compound. Lub hom phiaj ntawm kev siv yog kom nce plasterity ntawm cov khoom sib xyaw, txhim kho cov cuab yeej siv tau ntawm cov roj hmab thiab roj hmab tsis muaj zog thiab elongation lub zog ntawm cov roj hmab vulcanized. Tus nqi ntawm cov yas qhwv yuav tsum tsis txhob loj dhau, txwv tsis pub nws yuav txo cov coj tawm ntawm cov roj hmab vulcanized. Polyurethane Roj Hmab muaj cov polarity muaj zog, yog li kev xaiv dav dav ntawm polar cryizer. Phthaltates, phosphate ESTERSS, aliphatic alkyds, xws li dimhalfene glycole glyononate, tritoluen cov txiaj ntsig tau qhia tias thaum dioctyl Showacate yog siv, Spouting Qhov tshwm sim tshwm sim tom qab vulcanization. Thaum siv cov gymaron cob, lub tensile lub zog yog siab dua, lub zog deformation yog me me, tab sis lub hardness yog txo pom tseeb; Thaum tricresol phosphate yog siv, lub zog tensile yog qhov ua tsis tau zoo rau ntawm Coumaron cob, tab sis lub hardness yog txo tau obviously.
02 hnav reducer
Hauv qee lub sijhawm tshwj xeeb, txhawm rau txo cov kev txhuam hniav tsis txaus, thiab lwm yam los txhim kho cov roj av, nws yog qhov ua kom cov khoom siv roj tawv, nws tau siv lubrice roj Bushing thiab lwm qhov chaw, muaj kev khwv nyiaj txiag zoo heev.
03 Roj Hmab
Cov roj nplua nyeem siv hauv polyurethane elastomer feem ntau yog siv hauv kev ua cov thermoplastic thiab elastomer. Stearic acid thiab nws cov ntsev, paraffin thiab stearamide feem ntau siv.
04 Tus neeg sawv cev
Tso tus neeg sawv cev yog ib qho tsis tseem ceeb ntawm kev ua haujlwm hauv kev tsim khoom ntawm peb hom polyurethane elastomer khoom. Polyurethane yog cov khoom siv polymer muaj zog polymer. Nws muaj kev sib raug zoo sib luag nrog cov hlau thiab cov khoom siv polymer polymer. Yog tsis muaj tus neeg sawv cev, cov khoom yog qhov nyuaj tawm ntawm cov pwm. Cov khoom siv tso tawm silicone silicone, silicone estreylene, xab npuaj thiab lwm yam khoom siv tau los ua pwm, txhawm rau tshem cov txheej txheem neeg sawv cev lossis muab tshuaj txau.
05 muab tub lim
Cov fillers tau ntxiv los txo cov khoom lag luam cov khoom lag luam thiab kev tiv thaiv cov khoom kub ua haujlwm, txo cov shrinkage thiab coefficage thiab lwm yam khoom. Hauv kev sib xyaw hom polyurethane roj hmab feem ntau ntxiv rau 20-30 cov ntawv luam ntawm carbon dub, tab sis kom ua kom lub cev tsis muaj zog nyob rau hauv kev txo nqi ntawm kev txo cov khoom lag luam. Nrog rau qhov nce ntawm cov pa roj carbon dub, lub zog ntawm cov roj hmab ua kom ncaj, ua kom yooj yim sib txawv, ua kom yooj yim carbon dub, ib nrab txhawb nqa carbon dub, ib nrab txhawb nqa cov pa roj hmab dub, ib nrab txhawb nqa carbon dub yog neeg pluag. Lwm cov fillers xws li av nplaum, dawb carbon dub, calbon dub, pev roj carbonate, barium a Carbonate, barium sulfate, thiab lwm yam.
06 Colorant
Polyurethane Elastomer cov khoom lag luam muaj xim muaj xim, zoo nkauj thiab zoo nkauj thiab pom zoo nyob ntawm cov xim muaj xim. Muaj ob hom yeeb yaj kiab, organic dyes thiab inorganic pigments, organic dyes, cov khoom siv zoo nkauj, zoo nkauj txhaj tshuaj thiab extrusion seem. Cov xim ntawm Elastomer cov khoom lag luam feem ntau muaj ob txoj kev: ib qho yog cov tshuaj tsw qab thiab oligomer polyurethane polyurethane xim particle thiab xim paving khoom; Lwm txoj hauv kev yog cov xim thiab lwm yam ntxiv thiab cov roj hmab sib txuas lossis cov yas qhwv ua pa, tom qab ntim cua sov lub cev qhuav dej, ntim khoom siv cua sov. Thaum siv, ntxiv cov xim me me muab tshuaj txhuam rau cov prepolymer, do tusyees thiab ces cov tshuaj tiv thaiv nrog saw txuas txuas tus neeg sawv cev hla khoom. Txoj kev no yog siv rau MOCA vulcanization system. Cov xim cov ntsiab lus hauv cov xim muab cov nyiaj pub rau li 10% -30%. Tus nqi ntxiv ntawm cov xim muab tshuaj txhuam hauv cov khoom feem ntau tsawg dua 0.1%.
Vulcanizing tus neeg sawv cev tsuas yog hais txog vulcanizing tus neeg sawv cev thiab accelerator, tsuas yog siv hauv kev sib xyaw polyurethane elastomers. Tus neeg sawv cev vulcanizing suav nrog isocyanate, peroxide, peroxide thiab leej faj. Isocyanate Esson tau siv nyob rau hauv TDI thiab nws Dimer, MDI Dimer thiab papi, thiab lwm yam, yog li nws yog qhov tsim nyog kom muaj kev nyab xeeb thiab tiv thaiv dej rau hauv qhov sib txuas.
Qhov zoo ntawm kev siv isocyanate raws li vulcanizing tus neeg sawv cev yog hnav zoo, muaj zog thiab hardness. Peroxide vulcanizing Tus Neeg Sawv Cev rau diisoprandzene peroxide (lwm yam ntau yam, lwm yam kev sib tw ua si, lwm yam kev sib tw ua ntu zus, ua kom muaj av aryl thiab arylatization kub txog 140-150℃yog tsim nyog.
Nrog peroxide vulcanizing tus neeg sawv cev thiab oocyanate ua vulcanizing cov neeg sawv cev, lub zog tsis sib xws, lub sijhawm tsis sib xws yog qhov ua tau zoo dua, muaj zog me me, lub zog tsis sib xws, lub zog tsis sib xws, lub zog tsis sib xws, lub zog ua kom tsis muaj zog thiab kua muag lub zog thiab lub zog ua kom tsis taus tsis zoo, muaj tus ntxhiab tsw; Thaum cov qauv ntawm polyurethane compound muaj cov seg unsaturated unsaturated segments, Sulfur vulcanization yuav siv tau.
Ruaj Khov Tus Neeg Sawv Cev
Txhawm rau tiv thaiv kev laus ntawm polyurethane roj hmab, ntev cov kev pabcuam lub neej ntawm cov khoom lag luam, kev siv hluav taws xob stabilizer, tiv thaiv tus neeg sawv cev thiab lwm lub chaw sib txuas.
01 Thaum Tshav Kub Kub Stabilizer
Cov Roj Hmab Polyurethane Roj Hmab Ua Haujlwm Oxidation Oxidation Tsis Txaus Siab, yog li cov tshuaj tiv thaiv kab mob hauv qab, yog li cov tshuaj tiv thaiv kab mob ua kom muaj zog, yog li cov tshuaj tiv thaiv kab mob (5-di-tert-butylphenylpropionate) (antioxidant -10, antioxidant-butyl-476), TrinonyLphenyl phosphate (tnp), thiab lwm yam.
02 lub teeb qia
Kuj tseem paub raws li ultraviolet nqus tau, nws tuaj yeem txhim kho cov photostability ntawm cov ntxhiab isocyanate polyurethane. Feem ntau siv lub teeb cigilizers suav nrog benzophenone, xws li piperidine, xws li utterrothbenon (UV-Hydroxy-3 ', 5' -di-tert-butylphenyl) -5-chlorobakotriazole (UV-328), BIS (2, 2, 6, 6-tetacethylpiper) Sebacate, thiab lwm yam.
03 hydrolysis stabilizer
Thaum Polyester Polyurethane Roj Hmab siv rau hauv cov dej kub, tshwj xeeb tshaj yog nyob rau hauv dej kub, hydrolysis muaj stabilizer yuav tsum tau ntxiv. Lub hydrolysis ruaj khov siv dav hauv kev lag luam yog carbonized diimide teb. Ua los ntawm Lub Tebchaws German Rhein Tshuaj Nroj Tsuag Carbonized Diimide (PCRAOLIED Diimide), Ib Leeg Ntxaij (Phauj Sib Tw℃, feem ntau yog siv nyob rau hauv lub xeev molten ntawm polyester kua roj polyer, xws li puring hom polyurethane, polyurethane txheej; Cov tom kawg muaj siab dua molecular hnyav thiab yog siv nyob rau hauv thermoplastic thiab sib xyaw polyurethane elastomers.
04 anti-pwm tus neeg sawv cev
Polyether Polyurethane Elastomer muaj lub zog los tiv thaiv pwm, 0-1 qib, cia li pub dawb los ntawm microbial yaig, yuav tsis loj hlob tuaj pwm; Hom polyester thiab polyε-Cov hom polyurethane siv rau microbial yaig thiab mildew nyob rau hauv kub thiab noo thiab tsausε-Cov hom polyurethane roj hmab mildew yog qhov hnyav dua, yog li ntawd nws yog ib qho tsim nyog los ntxiv cov neeg sawv cev kom tsis txhob tiv thaiv me. Cov neeg sawv cev siv antimathwoline feem ntau yog 8-hydroxyquinolone, pystachlorophenol, sorium pentachhlorophenol,, (tri-n-butylmercuric acetate, etcide, Etc. Tus qhab nia ntxiv yog 0.1% -1%. Kev xaiv ntawm mildewitor yuav tsum tau coj mus rau hauv cov txiaj ntsig mildew thiab ib txwm muaj kuab paug rau tib neeg lub cev (LD50 = 500-1MG / kg), tab sis muaj xim.
05 nplaim taws retardant
Cov nplaim Retardant qib ntawm cov ntaub ntawv feem ntau yog ntsuas los ntawm cov lej oxygen: 38 rau thawj cov nplaim hluav taws xob thiab> rau cov nplaim roj nrab. Cov Oxygen Index ntawm cov khoom siv polyurethane ib txwm muaj hnub nyoog 19-20, uas zwm rau cov khoom siv. Thaum Polyurethane yog siv nyob rau hauv cov rooj tog, kev tsim kho, cov khoom siv paving, nws yuav tsum ua kom tau raws li nplaim taws retardant cov qauv saum qib no II. Yog li ntawd, nplaim taws retardant yog dav siv nyob rau hauv polyurethane cov khoom lag luam, thiab nws yog qhov ntau tshaj plaws ntawm cov complex, suav rau tag nrho cov pes tsawg ntawm polyurethane tebchaw. Nplaim taws retardant tau muab faib ua inorganic thiab organic nplaim taws, borate yog cov khoom siv tsis zoo, qhov tsis zoo, mus rau kev ntsuas, kev thauj mus los, Nws cov cuab yeej sib xyaw muab cov khoom yuav tsum tau ua rau cov qib siab, siv tsis yooj yim heev.
Ntau yam tshuaj lom neeg auxilaries ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm zoo tshuaj. Txawm hais tias tus nqi tsis loj, muaj ntau ntau yam, dav siv thiab siab ntxiv tus nqi. Ntau lub tuam txhab nyob hauv tsev thiab txawv teb chaws tau cog lus los xyaum cov tsiaj tshiab, tshwj xeeb tshaj yog cov ua haujlwm zoo. Polyurethane yog kev ua haujlwm los ntawm kev nthuav dav los, kev ua tau zoo tshaj plaws yog qhov zoo tshaj plaws, cov kev xaiv ntawm daim ntawv thov yog nthuav dav.
Qingdao Yinhpupy Cov ntaub ntawv tshiab tau cog lus rau kev txhim kho thiab cov tshuaj tiv thaiv polymer, UV nqus, nplaim taws retardant, ntau ntawm cov lus Askiv engineering plastics.
Txais tos rau kev nug:yihoo@yihoopolymer.com
Lub Sijhawm Post: Apr-12-2023