LUB LUAG HAUJ LWM NTAWM CPE HAUV PVC WOOD-PLASTIC COMPOSITES
Siv CPE thiab PVC sib xyaw cov qhov rooj yas thiab qhov rai, qhov elasticity, toughness thiab kev ua haujlwm kub qis tau zoo dua qub, thiab kev tiv thaiv huab cua, kev tiv thaiv kub thiab kev ruaj khov tshuaj lom neeg zoo.
Cov khoom siv sib xyaw ua ke ntawm cov ntoo PVC-yas feem ntau yog ua los ntawm PVC resin thiab cov khoom sau. Los ntawm kev sib xyaw nrog cov nroj tsuag fibers, kev hloov kho cov txheej txheem mis, thiab kev hloov kho lub cev nrog modifier CPE (chlorinated polyethylene) (nrog rau kev hloov kho ntxiv thiab kev hloov kho), uas tuaj yeem txhim kho qhov nyuaj, kev nruj, lub zog, kev tiv thaiv kub thiab kev tiv thaiv hluav taws ntawm cov khoom (hauv qhov ntau ntawm cov khoom siv lub cev uas tso cai, qhov siab dua ntawm cov chlorine ntawm CPE, qhov zoo dua qhov cuam tshuam hluav taws), ua rau lub zog tensile nce ntxiv, txhim kho qhov brittleness thiab creep tsis kam ntawm PVC.
Lub tshuab extrusion molding ntawm PVC ntoo-yas composite cov ntaub ntawv yog txawv ntawm cov yas ib txwm muaj. Txij li thaum lub ntsiab tivthaiv ntawm cov nroj tsuag fiber yog cellulose, cellulose muaj ntau pawg hydroxyl, thiab cov hydroxyl pawg no tsim cov hydrogen bonds intermolecular, uas ua rau cov nroj tsuag fibers muaj zog polarity thiab dej nqus. Ntawm qhov tod tes, feem ntau cov ntaub ntawv thermoplastic yog non-polar thiab hydrophobic, yog li qhov sib xws ntawm ob yog pluag heev, lub zog sib txuas ntawm qhov interface yog me me, thiab qhov ntim ntawm cov nroj tsuag fibers yog loj, yog li qhov fluidity thiab processability ntawm cov khoom ua tsis zoo, kneading thiab extrusion molding ua nyuaj. Yog li ntawd, kev txhim kho cov qauv ntawm cov ntoo-yas composite cov ntaub ntawv tau ua lub luag haujlwm zoo hauv kev txhim kho molding ua thiab kev ua tau zoo ntawm cov khoom.
CPE tau tsim tawm sai sai ua ib qho khoom siv hloov kho PVC, thiab PVC hloov kho tseem yog ib qho ntawm cov ntawv thov tseem ceeb tshaj plaws ntawm CPE. CPE muaj cov khoom sau zoo heev, thiab ntau yam khoom sau sib txawv tuaj yeem ntxiv los txhim kho nws cov khoom tensile, compression thiab deformation tas mus li, thiab txo cov nqi. Tus nqi siv ntawm PVC hloov kho kuj tau txhim kho.
Hauv CPE hloov kho software thiab cov khoom PVC tawv, piv nrog lwm cov polymers xws li PE thiab PP, qhov cuam tshuam ntawm nplaim taws yog qhov tseem ceeb heev. Ntau cov khoom PVC tawv raug hloov kho nrog CPE modifier nrog cov ntsiab lus chlorine ntawm 36%, thiab nws lub zog cuam tshuam siab tshaj plaws feem ntau yog tau los ntawm CPE nrog cov chlorine atoms faib rau ntawm cov saw hlau polyethylene tseem ceeb. Yog li ntawd, qhov hloov kho no tuaj yeem txhim kho zoo heev ntawm kev ua tiav, kev tawg, thiab lub zog cuam tshuam.
DAIM NTAWV THOV CPE NTAWM COV HLUAV TAWG ROJ, LUB LOG, THIAB SIV
Vim tias CPE molecule tsis muaj ob txoj saw, nws muaj kev tiv thaiv huab cua zoo, tiv thaiv hluav taws, thermal stability zoo dua PVC, tus nqi qis thiab kev ua tau zoo heev. Yaj hauv cov hydrocarbons aromatic thiab halogenated hydrocarbons, insoluble hauv aliphatic hydrocarbons, decomposes saum 170 ° C, thiab tso tawm hydrogen chloride roj. Nws muaj cov qauv tshuaj ruaj khov, tiv thaiv kev laus zoo heev, tiv thaiv hluav taws, tiv thaiv txias, tiv thaiv huab cua, xim dawb, tiv thaiv tshuaj lom neeg, tiv thaiv ozone thiab rwb thaiv tsev hluav taws xob, sib xws zoo thiab ua tau zoo, tuaj yeem sib xyaw nrog PVC, PE, PS thiab roj hmab kom txhim kho nws cov khoom siv lub cev.
CPE yog ib hom khoom siv tshiab uas muaj ntau yam khoom zoo heev. Nws yog ib qho khoom siv hloov pauv zoo heev rau PVC yas thiab roj hmab yas uas muaj cov khoom zoo heev. Nws muaj ntau yam kev siv thiab tau siv dav hauv cov cables, xov hlau, hoses, daim kab xev, roj hmab thiab cov khoom yas, cov ntaub ntawv sealing, thiab cov siv conveyor uas tsis kub hnyiab. , Daim nyias nyias tsis pub dej nkag, zaj duab xis thiab ntau yam ntaub ntawv profiled thiab lwm yam khoom. CPE kuj tseem tuaj yeem sib xyaw nrog polypropylene, polyethylene siab thiab qis siab, ABS, thiab lwm yam kom txhim kho cov nplaim taws tsis kam, kev laus tsis kam thiab kev ua haujlwm luam ntawv ntawm cov yas no. CPE tuaj yeem suav tias yog ib qho copolymer random ntawm ethylene, polyethylene thiab 1.2-dichloroethylene. Nws cov saw molecular yog saturated thiab polar chlorine atoms raug faib random. Vim nws cov khoom zoo heev ntawm lub cev thiab tshuaj lom neeg, nws yog siv dav hauv tshuab thiab hluav taws xob. , tshuaj lom neeg, cov ntaub ntawv tsim kho thiab kev lag luam mining. CPE tiv taus cua sov, tiv taus ozone thiab huab cua, tiv taus kev laus zoo dua li feem ntau cov roj hmab, tiv taus roj zoo dua li roj hmab nitrile (ABR), neoprene (CR), tiv taus kev laus zoo dua li chlorosulfonated vinyl chloride (CSM); tiv taus kua qaub, alkali, ntsev thiab lwm yam khoom corrosive, tsis muaj tshuaj lom, nplaim taws retardant, tsis muaj kev phom sij tawg.
DAIM NTAWV THOV CPE HAUV INK
Cov polyethylene chlorinated tuaj yeem ua tiav los ntawm kev txhaj tshuaj molding thiab extrusion molding. Txawm li cas los xij, vim tias CPE muaj ntau cov chlorine atoms, qee qhov feem pua ntawm cov cua sov stabilizers, antioxidants thiab lub teeb stabilizers yuav tsum tau ntxiv rau CPE ua ntej molding kom tiv thaiv kev ruaj khov ntawm nws cov khoom thiab kev ua tau zoo. Cov tshuaj chlorine qis kuj muaj nyob rau hauv rotational molding thiab tshuab molding.
Tam sim no, chlorinated polyethylene feem ntau yog siv los ua tus hloov kho rau PVC, HDPE thiab MBS hauv kev lag luam khoom yas. Tom qab sib xyaw ib feem ntawm CPE hauv polyvinyl chloride resin, nws tuaj yeem raug extruded rau hauv cov khoom xws li cov kav dej, phaj, hlau rwb thaiv tsev txheej, profiles, zaj duab xis, zaj duab xis ntsws, thiab lwm yam nrog cov khoom siv ua PVC dav dav; nws kuj tuaj yeem siv rau txheej, compression molding, thiab lwm yam. Yas, lamination, bonding, thiab lwm yam; siv los ua tus hloov kho rau PVC thiab PE, uas tuaj yeem txhim kho kev ua haujlwm ntawm cov khoom, txhim kho elasticity, toughness thiab qis kub ntawm PVC, thiab txo qhov kub embrittlement rau -40 ° C; kev tiv thaiv huab cua, kev tiv thaiv kub thiab kev ruaj ntseg tshuaj kuj zoo dua li lwm cov hloov kho; ua tus hloov kho rau PE, nws tuaj yeem txhim kho qhov luam tawm tau, nplaim taws retardancy thiab yooj ywm ntawm nws cov khoom, thiab ua kom qhov ceev ntawm PE ua npuas ncauj.
Chlorinated polyethylene resin yog ib hom khoom siv tshiab uas muaj ntau yam khoom zoo heev. Nws yog ib qho khoom siv hloov pauv zoo heev rau PVC yas thiab roj hmab yas uas muaj cov khoom zoo heev. Nws muaj ntau yam kev siv thiab tau siv dav hauv cov cables, xov hlau, hoses, daim kab xev, roj hmab thiab cov khoom yas, cov ntaub ntawv sealing, thiab cov siv conveyor uas tsis kub hnyiab. , daim nyias nyias tsis pub dej nkag, zaj duab xis thiab ntau yam ntaub ntawv profiled thiab lwm yam khoom. CPE kuj tseem tuaj yeem sib xyaw nrog polypropylene, polyethylene siab thiab qis siab, ABS, thiab lwm yam kom txhim kho cov nplaim taws tsis kam, kev laus tiv taus thiab kev ua haujlwm luam ntawv ntawm cov yas no. CPE tuaj yeem suav tias yog ib qho copolymer random ntawm ethylene, polyethylene thiab 1.2-dichloroethylene. Nws cov saw molecular yog saturated thiab polar chlorine atoms raug faib random. Vim nws cov khoom zoo heev ntawm lub cev thiab tshuaj lom neeg, nws yog dav siv hauv tshuab thiab hluav taws xob.
tshuaj lom neeg, cov ntaub ntawv siv hauv tsev thiab kev lag luam tsuas. CPE tiv taus cua sov, tiv taus ozone thiab huab cua, tiv taus kev laus zoo dua li feem ntau cov roj hmab, tiv taus roj zoo dua li roj hmab nitrile (ABR), neoprene (CR), tiv taus kev laus zoo dua li chlorosulfonated vinyl chloride (CSM); tiv taus kua qaub, Alkali, ntsev thiab lwm yam khoom corrosive, tsis muaj tshuaj lom, nplaim taws retardant, tsis muaj kev phom sij tawg.
Feem ntau siv rau hauv: xaim thiab cable (cov xaim thee hauv av, xaim teev nyob rau hauv UL thiab VDE cov qauv), cov yeeb nkab hydraulic, cov yeeb nkab tsheb, cov kab xev, cov ntawv roj hmab, kev hloov kho cov yeeb nkab PVC profile, cov ntaub ntawv sib nqus, kev hloov kho ABS, thiab lwm yam.
DAIM NTAWV THOV CPE HAUV YEES DUAB
1. Cov tshuaj plasticizers thiab cov tshuaj antioxidants siv rau hauv roj hmab thiab yas muaj txiaj ntsig zoo dua hauv cov PVC semi-rigid thiab mos, tshwj xeeb tshaj yog hauv kev txhaj tshuaj molding thiab cov khoom ua tiav theem ob. Siv CPE ua cov tshuaj plasticizer PVC, tsis muaj fading, tsis muaj kev tsiv teb tsaws chaw, tsis muaj kev rho tawm, thiab muaj kev tiv thaiv ozonation thiab corrosion tsis kam, zoo sib xws. Thaum ua cov yeeb yaj kiab, tawv cuav, khau hauv qab, hoses, thiab lwm yam, nws tuaj yeem ua rau mos, xim thiab ntev lub neej ntawm cov khoom. Nws yog siv los tsim cov kav dej tiv thaiv corrosion, xov hlau, phaj, thiab cov khoom nias rau cov roj teb, thiab nws tus nqi qis dua 30% txog 40% piv rau lwm cov PVC hloov kho. Cov nplaim taws-retardant thiab txias-resistant impact-resistant ua npuas ncauj tuaj yeem ua los ntawm kev sib xyaw CPE nrog PE thiab PP, thiab nws cov kev ua tau zoo dua li ntawm polyurethane thiab polystyrene ua npuas ncauj. Siv CPE ua cov tshuaj plasticizer ruaj khov rau ABS, AS, PS, thiab lwm yam rau kev tsim cov khoom siv hauv tsev plhaub, liners, tsheb qhov chaw, khoom siv hluav taws xob thiab hluav taws xob, thiab cov kab xev hluav taws-retardant tuaj yeem txo cov nqi.
2. Siv rau hauv cov khoom siv roj hmab sib xyaw CPE yog cov roj hmab tshwj xeeb uas muaj kev ua tau zoo heev, tshwj xeeb tshaj yog rau cov xov hlau thiab cov xov hlau uas xav tau kev tiv taus kub, hluav taws kub thiab hluav taws xob, thiab cov siv conveyor uas tiv taus hluav taws kub. Nws kuj tseem siv tau rau cov kav dej roj, tsim cov ntaub thaiv dej thiab cov khoom siv tshuaj lom neeg, thiab lwm yam. Cov roj hmab vulcanized ua los ntawm CPE elastic base khoom zoo dua neoprene hauv kev hnav tsis kam, dielectric zog, kub tsis kam, laus tsis kam, roj tsis kam, thiab lwm yam. Zoo ib yam li roj hmab, nws tus nqi qis dua li neoprene thiab nitrile roj hmab, thiab nws tuaj yeem siv rau hauv kev lag luam hlau thiab cable, cov khoom siv tsheb, cov yeeb nkab kub thiab roj tsis kam, hoses, thiab lwm yam. CPE tiv taus roj zoo ib yam li cov roj hmab chlorinated. Tsis tas li ntawd, CPE kuj siv dav hauv ntau yam khoom roj hmab.
3. CPE sib xyaw CPE/styrene/acrylonitrile copolymer muaj kev tiv thaiv kev cuam tshuam siab, hluav taws kub tsis kam, tiv taus huab cua thiab tsis kub tsis kam, thiab nws daim ntawv thov tuaj yeem sib tw nrog ABS. CPE/styrene/methacrylic acid copolymer muaj lub zog cuam tshuam siab, pob tshab thiab ruaj khov huab cua. Kev sib xyaw CPE nrog NBR tuaj yeem txhim kho ntau yam khoom ntawm NBR thiab tuaj yeem siv los tsim cov roj hmab tsis kam. CPE tuaj yeem siv ua ke nrog SBR los tsim cov roj hmab hoses thiab cov ntaub thaiv dej; siv ua ke nrog cov roj hmab dav dav, nws tuaj yeem siv ua cov khoom siv roj hmab xws li cov ntaub thaiv nag, cov log tsheb kauj vab xim, cov kav dej cua tsis kam hluav taws, thiab cov xov hlau. Hauv Nyiv Pooj, feem ntau CPE yog sib xyaw nrog cov roj hmab thiab cov khoom siv yas los txhim kho kev ua haujlwm, cov khoom zoo nkauj thiab zoo sab hauv. Nrog rau kev nce ntxiv ntawm CPE cov zis thiab kev txhim kho ntawm cov thev naus laus zis ua tiav, CPE/EVA sib xyaw kuj tseem tuaj yeem tsim tau, uas muaj kev ruaj khov zoo thiab siv los tsim cov phaj khaws cia ntawm qhov kub qis. CPE/chlorinated styrene yog siv rau hauv kev tsim cov insulators hluav taws xob, cov ua npuas dej tsis kam hluav taws, cov txheej txheem, thiab lwm yam.
4. CPE rau cov txheej tshwj xeeb thiab cov ntaub thaiv dej tuaj yeem ua rau cov txheej tshwj xeeb, xws li cov txheej tiv thaiv xeb, cov txheej tiv thaiv fouling, cov txheej tiv thaiv dej, thiab lwm yam, los hloov lwm cov txheej. CPE/PVC yog sib xyaw ua ke los ua cov ntaub thaiv dej, uas yog cov khoom siv tiv thaiv dej nruab nrab. Nws qhov kev tiv thaiv huab cua, kev tiv thaiv ozone, thiab kev tiv thaiv hluav taws zoo ib yam li cov roj hmab ethylene-propylene qib siab, thiab nws muaj tus nqi qis thiab kev ua haujlwm zoo. Kev yaj CPE hauv cov kuab tshuaj feem ntau tuaj yeem ua cov txheej tiv thaiv xeb. Tom qab sib xyaw CPE nrog asphalt, thiab lwm yam, nws feem ntau siv los tsim cov txheej tiv thaiv dej ntawm lub ru tsev nrog kev ua tau zoo dua.
5. Polyethylene uas muaj chlorine ntau Polyethylene uas muaj chlorine ntau muaj cov chlorine ntau txog 61% txog 75%. Nws yog ib yam khoom tawv, tiv taus kub, zoo li iav, thiab yog ib yam khoom siv ua zaj duab xis uas muaj cov yam ntxwv zoo heev. Nws tuaj yeem sib xyaw nrog xim alkyd, epoxy resin, phenolic, unsaturated polyester, polyacrylate, thiab lwm yam los ua cov txheej tiv thaiv xeb nrog kev ruaj khov tshuaj zoo. Nws cov nplaim taws tsis kam, tiv taus xeb, tiv taus huab cua, thiab elasticity zoo dua li roj hmab chlorinated. Lwm txoj hauv kev rau roj hmab chlorinated. Polyethylene uas muaj chlorine ntau muaj cov yam ntxwv zoo rau cov hlau thiab pob zeb, yog li nws muaj cov txiaj ntsig zoo rau kev tiv thaiv cov ntaub ntawv no. Polyethylene uas muaj chlorine ntau muaj kev sib xyaw zoo nrog cov xim inorganic thiab organic, thiab tuaj yeem siv los ua cov txheej tiv thaiv nplaim taws.
6. Lwm yam kev siv Ntxiv CPE rau hauv roj roj tuaj yeem txo nws qhov chaw khov, thiab cov khoom ntxiv rau roj iav tuaj yeem txhim kho qhov kev tiv thaiv ntawm cov roj rau kev siab. Ntxiv CPE rau hauv roj txiav thiab roj drilling tuaj yeem txhim kho lub neej ua haujlwm ntawm cov cuab yeej. Tsis tas li ntawd, CPE kuj tseem siv rau hauv cov tawv nqaij softeners thiab thickeners ntawm cov ntawv luam ntawv, thiab lwm yam, thiab nws cov kev siv dav dav tas li.
LUB LUAG HAUJ LWM NTAWM KEV NTXIV CPE HAUV KEV TSIM YAS YOG DAB TSI?
Chlorinated polyethylene (CPE) yog cov khoom siv polymer uas muaj roj ntau, nws cov tsos yog hmoov dawb, tsis muaj tshuaj lom thiab tsis qab, nws tiv taus huab cua zoo heev, tiv taus ozone, tiv taus tshuaj lom neeg thiab tiv taus kev laus, thiab nws tiv taus roj zoo, tiv taus hluav taws thiab ua kom zoo nkauj. Nws muaj zog (tseem yoog tau ntawm -30 ° C), sib haum xeeb zoo nrog lwm cov khoom siv polymer, kub siab decomposition, decomposition los tsim HCl, HCL tuaj yeem ua rau CPE dechlorination reaction. Chlorinated polyethylene yog cov khoom siv polymer ua los ntawm high-density polyethylene (HDPE) los ntawm chlorination substitution reaction. Raws li cov qauv sib txawv thiab kev siv, chlorinated polyethylene tuaj yeem faib ua resin hom chlorinated polyethylene (CPE) thiab elastomer hom chlorinated polyethylene (CM). Ntxiv nrog rau kev siv ib leeg xwb, thermoplastic resins kuj tuaj yeem sib xyaw nrog polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), ABS thiab txawm tias polyurethane (PU). Hauv kev lag luam roj hmab, CPE siv tau ua cov roj hmab tshwj xeeb zoo, thiab kuj siv tau nrog roj hmab ethylene-propylene (EPR), roj hmab butyl (IIR), roj hmab nitrile (NBR), chlorosulfonated polyethylene (CSM), thiab lwm yam. Lwm cov roj hmab sib xyaw siv.
