Cov Khoom Siv PVC Zoo Tshaj Plaws SG3, SG5, SG7: Kev Tsim Kho Kom Haum Rau Kev daws teeb meem kev lag luam kawg - mus rau - kawg
Kev Tsim Qauv Molecular & Cov Yam Ntxwv Lub Cev
SG3 (Qib Siab - Kev Ywj Pheej)
Tsim los nrog qib polymerization ntawm 1300 - 1500 thiab K - tus nqi ntawm 70 - 72, qib no muaj cov saw hlau ntev uas ua rau cov yas plasticizer ntes tau zoo dua. Nws qhov kev faib tawm ntawm cov khoom me me 60 - 250μm ua kom muaj kev sib xyaw ua ke hauv cov qauv mos mos, tso cai rau 25 - 35g ntawm cov yas plasticizer nqus tau ib 100g resin. Cov qauv amorphous ua rau muaj kev ntev ntev thaum tawg, ua rau nws zoo tagnrho rau cov khoom uas xav tau kev khoov rov qab yam tsis muaj kev tawg.
SG5 (Ntau Yam Nruab Nrab - Qib)
Nrog rau qhov sib npaug ntawm qib polymerization ntawm 1000 - 1100 nrog tus nqi K - ntawm 65 - 67, SG5 muab qhov nruab nrab dynamic. Nws qhov optimized particle density (0.45 - 0.58g/mL) pab txhawb kev ntws du hauv ob qho tib si extrusion thiab txhaj tshuaj molding, thaum lub sijhawm nruab nrab plasticizer nqus (20 - 28g/100g) ua rau hloov pauv ntawm semi - rigid cable sheaths mus rau qhov qis - flexibility profiles. Qhov kev sib xws ntawm cov saw molecular txo qis qhov tsis zoo ntawm kev ua tiav, ua kom ntseeg tau tias cov phab ntsa tuab sib xws hauv cov yeeb nkab extrusion.
SG7 (Qib Engineering Rigid)
Nrog rau qib polymerization ntawm 700 - 850 thiab K - tus nqi ntawm 60 - 62, SG7 muab qhov tseem ceeb rau kev ua haujlwm ntawm cov khoom ntim molecular rau kev ruaj khov. Nws cov qauv me me 40 - 180μm (qhov ceev 0.50 - 0.62g / mL) txo cov voids hauv cov khoom pwm, txhim kho kev tiv thaiv kev cuam tshuam hauv cov qauv tsev. Kev nqus cov yas qis (15 - 22g / 100g) tso cai rau cov qauv khov kho tag nrho, thaum cov vinyl monomer seem ≤3μg / g ua tau raws li cov qauv kev nyab xeeb ntawm kev sib cuag zaub mov rau cov ntawv thov ntim khoom.
Daim Ntawv Thov Ecosystem
SG3: Tus Kws Tshwj Xeeb Txog Kev Hloov Tau Yooj Yim
Hauv kev ua liaj ua teb, cov yeeb yaj kiab SG3 nrog 40 - 50 phr plasticizer ntxiv rau tsim cov npog tsev cog khoom UV ruaj khov, sib npaug lub teeb kis tau zoo nrog lub zog tiv thaiv kua muag. Rau kev siv kho mob, nws cov ntsiab lus monomer qis ua rau cov raj mos rau cov tshuab dialysis, thaum nyob rau hauv khau, nws tsim cov hauv qab elastic uas khaws cov duab thoob plaws qhov kub thiab txias hloov pauv.
SG5: Tus Neeg Ua Haujlwm Hauv Kev Lag Luam
Cov chaw tsim khoom siv hluav taws xob siv SG5's 10 - 20 phr plasticizer ntau yam los tsim cov ntaub thaiv hluav taws xob uas tiv taus hluav taws xob rau cov phiaj xwm fais fab, ua ke cov ntaub thaiv hluav taws xob nrog kev ruaj khov kho. Hauv kev tsim kho, nws extrudes rau hauv cov ntaub thaiv huab cua rau cov qhov rai, qhov twg nws qhov nyuaj nruab nrab tiv taus kev puas tsuaj ntawm ozone. Cov khoom siv txhaj tshuaj - pwm tsheb, xws li cov qhov rooj trims, tau txais txiaj ntsig los ntawm nws qhov cuam tshuam - lub zog - rau - qhov hnyav piv.
SG7: Tus yeej ntawm kev ruaj khov
Cov kav dej lag luam siv SG7 lub modulus siab rau cov kav dej phwj uas tiv taus tshuaj lom neeg thiab cov kav dej loj uas ntsuas siab. Cov qauv qhov rai extruded, thaum sib xyaw nrog titanium dioxide, qhia txog cov xim zoo heev hauv cov chaw sab nraum zoov. Cov tuam txhab tsim khoom siv hluav taws xob siv nws rau cov tsev siv txhaj tshuaj pwm, siv nws qhov ruaj khov thaum sib dhos kub siab.
Phau Ntawv Qhia Txog Kev Txhim Kho Cov Txheej Txheem
Cov Kev Tswj Xyuas Kub
SG3 xav tau kev tswj kub nruj heev (160 - 180 ° C) kom tiv thaiv kev lwj ua ntej lub sijhawm; txawm tias qhov kub tshaj 10 ° C tuaj yeem ua rau cov kua qaub hydrochloric tso tawm, ua rau daj. Qhov sib txawv, SG7 zam tau 180 - 200 ° C ua tiav, ua rau cov kav dej loj dua nrawm dua, txawm hais tias tshaj 210 ° C muaj kev pheej hmoo ntawm kev txiav cov saw hlau molecular.
Kev Tsim Qauv Ntxiv
Kev Ruaj Kho: SG3 xav tau 1 - 2 phr ntawm calcium - zinc composite stabilizers los tiv thaiv kev puas tsuaj thermal thaum lub sijhawm ua cov yas siab, thaum SG7 tsuas xav tau 0.5 - 1 phr vim yog kev ntxhov siab txo qis los ntawm cov yas.
Kev Siv Lubrication: Txhua qib tau txais txiaj ntsig los ntawm 0.2 - 0.5 phr ntawm polyethylene wax, tab sis SG3 yuav xav tau cov koob tshuaj ntau dua los txo qhov kev sib txhuam sab hauv hauv cov khoom sib xyaw mos.
Cov Khoom Siv Ntxiv: Cov tshuaj antioxidants hauv SG7 formulations ua rau lub neej ua haujlwm sab nraum zoov ntev dua, thaum cov khoom hloov kho hauv SG5 txhim kho kev tiv thaiv notch rau kev siv huab cua txias.
Kev Ua Zoo Tshaj Plaws hauv Kev Tsim Resin
Los ntawm kev koom ua ke cov qauv molecular nrog kev sim ua haujlwm, peb cov khoom SG3, SG5, SG7 ua rau cov chaw tsim khoom muaj peev xwm hla dhau cov kev txwv PVC ib txwm muaj. Txij li qhov yooj ywm uas xav tau rau cov khoom siv kho mob pov tseg mus rau qhov kev ua tiav ntawm cov qauv uas xav tau los ntawm kev tsim kho siab, cov resins no suav nrog kev sib xyaw ntawm kev tshawb fawb thiab kev ua haujlwm hauv kev lag luam - teeb tsa cov qauv tshiab rau kev ua tau zoo - tsav cov kev daws teeb meem polymer.
Cov Lus Qhia Tshwj Xeeb
| Lub Npe Khoom | PVC | |||
| Cov Qauv Tshuaj | C2H3Cl | |||
| Qhov Hnyav Molecular | 62.49822 | |||
| Qhov tsos | Hmoov dawb khov kho | |||
| Kub Kub | 170-195 °C | |||
| Qhov Ceev | 1.4 g/mL ntawm 25 °C | |||
| CAS TSIS MUAJ | 9002-86-2 | |||
| Tus lej HS | 39041100 | |||
| EINECS TSIS MUAJ | 618-338-8 | |||
Daim Ntawv Tswj Xyuas Zoo
| Lub Npe Khoom | PVC RESIN SG3 | ||||||
| YAM KHOOM | TUS NQI TXUJ CI (%) | TUS NQI XEEM (%) | |||||
| Tus lej viscosity, ML / G | 127-135 | 132.26 | |||||
| Tus lej ntawm cov khoom tsis huv ≤ | 16 | 16 | |||||
| Feem pua ntawm Cov Khoom Uas Tsis Txawj Hloov (xws li dej),% ≤ | 0.3 | 0.12 | |||||
| Qhov Pom Tseeb, g / mL, ≥ | 0.45 | 0.521 | |||||
| Txo ntawm 250umSieve Mesh ≤Sieve, Sieve,% 63umSieve Mesh ≥Sieve, | 1.6 | 0.1 | |||||
| 97 xyoo | 99 | ||||||
| "Qhov Muag Ntses"/400cm²≤ | 20 | 2 | |||||
| 100g Resin Plasticizer Absorption, g≥ | 26 | 26.8 | |||||
| Dawb (160 ℃, 10 feeb),% ≥ | 78 | 84 | |||||
| Kev Ua Haujlwm ntawm Dej Extract, uS / cm.g≤ | 5 | 0.3 | |||||
| Cov Khoom Siv Vinyl Chloride Monomer seem, ug / g≤ | 5 | 0.31 | |||||
| Tus nqi K | 72-71 | 72-71 | |||||
| Lub Npe Khoom | PVC RESIN SG5 | ||||||
| YAM KHOOM | TUS NQI TXUJ CI (%) | TUS NQI XEEM (%) | |||||
| Viscosity ml/g | 118~107 | 107 | |||||
| Tus naj npawb ntawm cov khoom tsis huv ≤ | 16 | 12/10/10/12 | |||||
| Cov khoom uas tsis muaj zog (xws li dej) %≤ | 0.4 | 0.16/0.13/0.12/0.13 | |||||
| Qhov pom tseeb ntawm qhov ceev g / ml ≥ | 0.48 | 0.54 | |||||
| Cov seem seem ntawm lub sieve % 250 mesh ≤ | 1.6 | 0.16 | |||||
| Tus naj npawb ntawm 'fisheyes' / 400cm2≤ | 20 | 8 | |||||
| 100g resin plasticiser nqus / g≥ | 19 | 21 | |||||
| Dawb (160 ℃, 10 feeb) ≥ | 78 | 90 xyoo | |||||
| Cov ntsiab lus ntawm cov aminoethylene monomer seem μg/z≤ | 5 | 2.74 | |||||
| kev ruaj khov ntawm thermal | —— | 6'41"56 siab | |||||
| Lub Npe Khoom | PVC RESIN SG7 | ||||||
| YAM KHOOM | Cov Lus Qhia Tshwj Xeeb | ||||||
| Tus lej viscosity, ML / G | 87-95 | ||||||
| Tus lej ntawm cov khoom tsis huv ≤ | 20 | ||||||
| Feem pua ntawm Cov Khoom Uas Tsis Txawj Hloov (xws li dej),% ≤ | 0.45 | ||||||
| Qhov Pom Tseeb, g / mL, ≥ | 0.52 | ||||||
| Txo ntawm 250umSieve Mesh ≤Sieve, Sieve,% 63umSieve Mesh ≥Sieve, | 1.6 | ||||||
| 97 xyoo | |||||||
| "Qhov Muag Ntses"/400cm²≤ | 30 | ||||||
| 100g Resin Plasticizer Absorption, g≥ | 12 | ||||||
| Dawb (160 ℃, 10 feeb),% ≥ | 75 | ||||||
| Cov Khoom Siv Vinyl Chloride Monomer Uas Nyob Txwm, mg / l≤ | 5 | ||||||