Lub luag haujlwm ntawm CPE hauv PVC WOOD-PLASTIC COMPOSITES
Siv CPE thiab PVC sib xyaw yas qhov rooj thiab qhov rais, qhov elasticity, toughness thiab qis kub ua haujlwm tau zoo heev, thiab huab cua tsis kam, kub tsis kam thiab tshuaj lom neeg ruaj khov zoo.
PVC ntoo-yas composite cov ntaub ntawv yog tsim los ntawm PVC cob thiab muab tub lim. Los ntawm kev sib xyaw nrog cov nroj tsuag fibers, kev hloov kho cov qauv kev siv tshuab, thiab kev hloov kho lub cev nrog kev hloov kho CPE (chlorinated polyethylene) (nrog rau cov nyhuv incremental thiab Modification effect), uas tuaj yeem txhim kho hardness, rigidity, lub zog, kub tsis kam thiab nplaim retardancy ntawm cov khoom ( nyob rau hauv qhov kev tso cai ntawm cov cuab yeej ntawm lub cev, qhov siab dua cov ntsiab lus chlorine ntawm CPE, qhov zoo dua cov nplaim retardancy effect), ua kom lub zog tensile, txhim kho brittleness thiab creep kuj ntawm PVC.
Lub extrusion molding mechanism ntawm PVC ntoo-yas cov ntaub ntawv sib xyaw yog qhov txawv ntawm cov khoom siv yas zoo tib yam. Txij li cov ntsiab lus tseem ceeb ntawm cov nroj tsuag fiber ntau yog cellulose, cellulose muaj ntau pawg hydroxyl, thiab cov hydroxyl pawg no tsim cov ntawv cog lus hydrogen, uas ua rau cov nroj tsuag fibers muaj zog polarity thiab nqus dej. Ntawm qhov tod tes, cov ntaub ntawv thermoplastic feem ntau tsis yog-polar thiab hydrophobic, yog li qhov kev sib raug zoo ntawm ob yog qhov tsis zoo, lub zog sib txuas ntawm qhov sib txuas me me, thiab qhov ntim ntawm cov nroj tsuag fiber ntau yog qhov loj, yog li lub fluidity thiab processability ntawm cov khoom siv thermoplastic feem ntau yog cov tsis muaj polar thiab hydrophobic. cov khoom ua tsis zoo, kneading thiab extrusion molding ua nyuaj. Yog li ntawd, kev txhim kho formulation ntawm ntoo-yas composite cov ntaub ntawv tau ua lub luag hauj lwm zoo nyob rau hauv kev txhim kho molding ua thiab cov khoom ua tau zoo.
CPE yog Ameslikas tsim sai heev li PVC hloov kho, thiab hloov PVC tseem yog ib qho tseem ceeb tshaj plaws daim ntawv thov teb ntawm CPE. CPE muaj cov khoom ntim zoo heev, thiab ntau cov khoom ntim tuaj yeem muab ntxiv los txhim kho nws cov khoom tensile, compression thiab deformation mus tas li, thiab txo cov nqi. Kev siv tus nqi ntawm kev hloov kho PVC kuj tseem txhim kho.
Hauv CPE hloov kho software thiab cov khoom siv tawv PVC, piv nrog lwm cov polymers xws li PE thiab PP, cov nplaim hluav taws kub nyhiab yog qhov tseem ceeb. Ntau cov khoom siv tawv PVC tau hloov kho nrog CPE hloov kho nrog cov ntsiab lus chlorine ntawm 36%, thiab nws qhov kev cuam tshuam siab tshaj plaws yog feem ntau tau los ntawm CPE nrog cov tshuaj chlorine atoms random faib rau ntawm polyethylene cov saw tseem ceeb. Yog li, qhov kev hloov kho no tuaj yeem txhim kho tau zoo nyob rau hauv cov nqe lus ntawm kev ua tau zoo, dispersibility, thiab cuam tshuam lub zog.
APPLICATION CPE RAU WIRE INSULATION LAYER, TIRE, SIV
Txij li thaum CPE molecule tsis muaj ob txoj hlua, nws muaj huab cua tsis zoo, nplaim taws ua haujlwm, thermal stability zoo dua li PVC, tus nqi qis thiab kev ua haujlwm zoo heev. Soluble nyob rau hauv aromatic hydrocarbons thiab halogenated hydrocarbons, insoluble nyob rau hauv aliphatic hydrocarbons, decomposes saum 170 ° C, thiab tso tawm hydrogen chloride gas. Nws muaj cov qauv tshuaj ruaj khov, kev laus ua haujlwm zoo, nplaim taws ua haujlwm, tiv taus txias, huab cua tsis kam, xim dawb, tsis kam tshuaj lom neeg, ozone tsis kam thiab hluav taws xob rwb thaiv tsev, zoo sib xws thiab kev ua haujlwm, tuaj yeem sib xyaw nrog PVC, PE, PS thiab roj hmab rau txhim kho nws lub cev zoo.
CPE yog ib hom tshiab ntawm cov khoom siv hluavtaws nrog cov khoom zoo heev. Nws yog ib qho kev hloov pauv zoo heev rau PVC yas thiab cov roj hmab hluavtaws nrog cov khoom zoo. Nws muaj ntau yam kev siv thiab tau siv dav hauv cables, xov hlau, hoses, tapes, roj hmab thiab yas khoom, sealing cov ntaub ntawv, thiab nplaim-retardant conveyor siv. , Waterproof membrane, zaj duab xis thiab ntau yam ntaub ntawv profiled thiab lwm yam khoom. CPE kuj tuaj yeem sib xyaw nrog polypropylene, siab thiab tsis tshua muaj siab polyethylene, ABS, thiab lwm yam. CPE tuaj yeem suav tias yog qhov sib txawv ntawm cov 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 tau siv dav hauv tshuab thiab hluav taws xob. , tshuaj, khoom siv tsev thiab mining industries. CPE tshav kub tsis kam, ozone tsis kam thiab huab cua tsis kam, kev laus ua haujlwm zoo dua li cov roj hmab feem ntau, cov roj ua haujlwm zoo dua li nitrile roj hmab (ABR), neoprene (CR), kev laus tiv taus zoo dua li chlorosulfonated vinyl chloride (CSM); acid kuj, Alkali, ntsev thiab lwm yam corrosive zog, uas tsis yog-tshuaj lom, nplaim retardant, tsis muaj explosion txaus ntshai.
Kev thov ntawm CPE hauv INK
Chlorinated polyethylene tuaj yeem ua tiav los ntawm kev txhaj tshuaj molding thiab extrusion molding. Txawm li cas los xij, txij li CPE muaj ntau cov tshuaj chlorine atoms, qee qhov kev faib ua feem ntawm cov cua sov stabilizers, antioxidants thiab lub teeb stabilizers yuav tsum tau ntxiv rau CPE ua ntej molding los tiv thaiv kev ruaj ntseg ntawm nws cov muaj pes tsawg leeg thiab kev ua tau zoo. Tsawg-chlorine CPEs kuj muaj nyob rau hauv rotational molding thiab tshuab molding.
Tam sim no, chlorinated polyethylene feem ntau yog siv los ua kev hloov kho rau PVC, HDPE thiab MBS hauv kev lag luam khoom yas. Tom qab sib tov ib qho kev faib ua feem ntawm CPE hauv polyvinyl chloride resin, nws tuaj yeem raug extruded rau hauv cov khoom xws li cov kav dej, daim hlau, hlau rwb thaiv tsev txheej, profiles, films, shrink films, thiab lwm yam nrog cov khoom siv dav siv hauv PVC; nws kuj tuaj yeem siv rau txheej, compression molding, thiab lwm yam. Yas, lamination, bonding, thiab lwm yam; siv los ua ib qho kev hloov kho rau PVC thiab PE, uas tuaj yeem txhim kho cov khoom lag luam, txhim kho elasticity, toughness thiab qis kub ua haujlwm ntawm PVC, thiab txo qhov kub ntawm -40 ° C; huab cua tsis kam, kub tsis kam thiab tshuaj lom neeg ruaj khov kuj zoo dua rau lwm cov kev hloov kho; Raws li kev hloov kho rau PE, nws tuaj yeem txhim kho cov ntawv luam tawm, nplaim hluav taws kub thiab hloov tau yooj yim ntawm nws cov khoom, thiab ua rau kom qhov ntom ntom ntawm PE ua npuas ncauj.
Chlorinated polyethylene resin yog ib hom tshiab ntawm cov khoom siv hluavtaws nrog cov khoom zoo heev. Nws yog ib qho kev hloov pauv zoo heev rau PVC yas thiab cov roj hmab hluavtaws nrog cov khoom zoo. Nws muaj ntau yam kev siv thiab tau siv dav hauv cables, xov hlau, hoses, tapes, roj hmab thiab yas khoom, sealing cov ntaub ntawv, thiab nplaim-retardant conveyor siv. , Waterproof membrane, zaj duab xis thiab ntau yam ntaub ntawv profiled thiab lwm yam khoom. CPE kuj tuaj yeem sib xyaw nrog polypropylene, siab thiab tsis tshua muaj siab polyethylene, ABS, thiab lwm yam. CPE tuaj yeem suav tias yog qhov sib txawv ntawm cov ethylene, polyethylene thiab 1.2-dichloroethylene. Nws cov saw molecular yog saturated thiab polar chlorine atoms raug faib random. Vim nws zoo heev lub cev thiab tshuaj, nws yog dav siv nyob rau hauv machinery thiab hluav taws xob.
chemical, tsev cov ntaub ntawv thiab mining industries. CPE tshav kub tsis kam, ozone tsis kam thiab huab cua tsis kam, kev laus ua haujlwm zoo dua li cov roj hmab feem ntau, cov roj ua haujlwm zoo dua li nitrile roj hmab (ABR), neoprene (CR), kev laus tiv taus zoo dua li chlorosulfonated vinyl chloride (CSM); acid kuj, Alkali, ntsev thiab lwm yam corrosive zog, uas tsis yog-tshuaj lom, nplaim retardant, tsis muaj explosion txaus ntshai.
Feem ntau siv nyob rau hauv: hlau thiab cable (coal mine cables, xov hlau teev nyob rau hauv UL thiab VDE qauv), hydraulic hoses, automotive hoses, tapes, roj hmab los xij, PVC profile yeeb nkab hloov kho, cov khoom sib nqus, ABS hloov, thiab lwm yam.
APPLICATION OF CPE IN FILM
1. Plasticizers thiab antioxidants siv rau hauv cov roj hmab thiab cov yas yog zoo dua nyob rau hauv semi-rigid thiab mos PVC, tshwj xeeb tshaj yog nyob rau hauv kev txhaj tshuaj molding thiab lwm yam khoom ua tiav. Siv CPE li PVC yas, tsis muaj fading, tsis muaj kev tsiv teb tsaws, tsis muaj extraction, thiab muaj ozonation kuj thiab corrosion kuj, zoo compatibility. Thaum ua cov yeeb yaj kiab, tawv tawv, khau khau, hoses, thiab lwm yam, nws tuaj yeem ua rau softness, colorability thiab prolongs lub neej kev pab cuam ntawm cov khoom. Nws yog siv los tsim cov kav dej los tiv thaiv corrosion, xov hlau, phaj, thiab nias qhov chaw rau cov roj av, thiab nws cov nqi yog 30% mus rau 40% qis dua lwm cov hloov PVC. Nplaim hluav taws kub thiab txias-resistant cuam tshuam-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 yas yas ruaj khov rau ABS, AS, PS, thiab lwm yam rau kev tsim cov khoom siv hauv tsev, cov khoom siv hauv tsev, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob thiab hluav taws xob, thiab cov nplaim hluav taws xob tuaj yeem txo cov nqi.
2. Siv rau hauv cov khoom siv roj hmab sib xyaw CPE yog cov roj hmab hluavtaws tshwj xeeb nrog kev ua haujlwm zoo, tshwj xeeb tshaj yog tsim rau cov xov hlau thiab cov cables uas yuav tsum tau ua kom muaj kev kub ntxhov, nplaim hluav taws kub thiab hluav taws xob, thiab cov nplaim hluav taws kub-retardant conveyor siv. Nws kuj tseem siv tau rau cov kav dej, lub tsev tsis muaj dej tsis zoo thiab cov khoom siv tshuaj lom neeg hauv ob sab phlu, thiab lwm yam. Cov roj hmab vulcanized ua los ntawm CPE elastic puag cov khoom yog superior rau neoprene nyob rau hauv cov nqe lus ntawm hnav tsis kam, dielectric zog, tshav kub tsis kam, laus kuj, roj kuj, thiab lwm yam. Zoo ib yam li roj hmab, nws cov nqi qis dua li ntawm neoprene thiab nitrile roj hmab, thiab nws tuaj yeem siv rau hauv kev lag luam hlau thiab cable, tsheb qhov chaw, kub kub thiab roj resistant hoses, hoses, thiab lwm yam. Cov roj kuj ntawm CPE yog zoo ib yam li cov chlorinated roj hmab. Tsis tas li ntawd, CPE kuj tau siv dav hauv ntau yam khoom siv roj hmab.
3. CPE sib xyaw CPE / styrene / acrylonitrile copolymer muaj kev cuam tshuam zoo, nplaim taws retardancy, huab cua tsis kam thiab kub tsis kam, thiab nws daim ntawv thov teb tuaj yeem sib tw nrog ABS. CPE / styrene / methacrylic acid copolymer muaj kev cuam tshuam lub zog, pob tshab thiab huab cua ruaj khov. Kev sib xyaw CPE nrog NBR tuaj yeem txhim kho ntau yam khoom ntawm NBR thiab tuaj yeem siv los tsim cov roj hmab roj hmab hose. CPE tuaj yeem siv ua ke nrog SBR los tsim cov roj hmab hoses thiab cov dej tsis zoo; siv ua ke nrog cov roj hmab siv dav dav, nws tuaj yeem siv los ua cov khoom siv roj hmab xws li cov ntaub los nag, cov tsheb kauj vab uas muaj xim, cov nplaim hluav taws kub hnyiab, thiab cov cables. Hauv Nyij Pooj, feem ntau CPE yog sib xyaw nrog cov roj hmab thiab cov ntaub ntawv yas los txhim kho kev ua haujlwm, cov khoom zoo li thiab sab hauv. Nrog rau qhov nce ntawm CPE cov zis thiab kev txhim kho ntawm kev siv tshuab, CPE / EVA blends kuj tuaj yeem tsim tau, uas muaj qhov ruaj khov zoo thiab siv los tsim cov phaj khaws cia ntawm qhov kub thiab txias. CPE / chlorinated styrene yog siv nyob rau hauv kev tsim cov hluav taws xob insulators, nplaim taws retardant foams, coatings, thiab lwm yam.
4. CPE rau cov txheej txheem tshwj xeeb thiab cov dej tsis muaj dej tuaj yeem ua rau cov txheej txheem tshwj xeeb, xws li cov txheej txheem tiv thaiv corrosion, cov txheej txheem tiv thaiv fouling, cov txheej txheem dej tsis zoo, thiab lwm yam, los hloov lwm cov txheej txheem. CPE / PVC yog sib xyaw ua kom cov dej tsis muaj dej, uas yog cov khoom siv tsis muaj dej tsis zoo. Nws cov huab cua tsis kam, ozone tsis kam, thiab nplaim retardancy zoo ib yam li cov qib high-qib ethylene-propylene roj hmab daim nyias nyias, thiab nws muaj tus nqi qis thiab kev tsim kho zoo. Dissolving CPE hauv cov kuab tshuaj ntau tuaj yeem ua rau cov tshuaj tiv thaiv corrosion. Tom qab sib tov CPE nrog asphalt, thiab lwm yam, nws yog feem ntau siv los tsim ru tsev waterproof txheej nrog kev ua tau zoo dua.
5. High-chlorinated polyethylene High-chlorinated polyethylene muaj cov ntsiab lus chlorine ntawm 61% mus rau 75%. Nws yog ib qho nyuaj, kub-resistant, muaj zog iav zoo li cov khoom, thiab cov khoom siv ua yeeb yaj kiab nrog cov khoom zoo heev. Nws tuaj yeem tov nrog alkyd xim, epoxy resin, phenolic, unsaturated polyester, polyacrylate, thiab lwm yam. Nws cov nplaim retardancy, corrosion kuj, huab cua tsis kam, thiab elasticity yog txhua yam zoo dua li chlorinated roj hmab. Lwm txoj rau chlorinated roj hmab. High chlorinated polyethylene muaj cov khoom zoo adhesion rau hlau thiab pob zeb, yog li nws muaj kev tiv thaiv zoo ntawm cov ntaub ntawv no. High chlorinated polyethylene muaj qhov tsis zoo nrog cov xim tsis muaj zog thiab cov organic, thiab tuaj yeem siv los ua cov nplaim hluav taws.
6. Lwm daim ntawv thov ntxiv CPE rau roj roj tuaj yeem txo nws qhov chaw khov, thiab cov khoom ntxiv rau cov roj iav tuaj yeem txhim kho cov roj tiv thaiv kom siab. Ntxiv CPE rau kev txiav cov roj thiab cov roj drilling tuaj yeem txhim kho lub neej kev pab cuam ntawm cov cuab yeej. Tsis tas li ntawd, CPE kuj tseem siv rau hauv cov tawv softeners thiab thickeners ntawm printing inks, thiab lwm yam, thiab nws daim ntawv thov ntau yog tas li nthuav.
Lub luag haujlwm ntawm kev ntxiv CPE hauv cov khoom siv yas yog dab tsi?
Chlorinated polyethylene (CPE) yog cov khoom siv polymer saturated, zoo li cov hmoov dawb, tsis muaj tshuaj lom thiab tsis qab, nws muaj huab cua zoo heev, ozone tsis kam, tshuaj tiv thaiv thiab kev laus ua haujlwm, thiab muaj roj zoo, nplaim hluav taws xob thiab xim ua haujlwm. Zoo toughness (tseem saj zawg zog ntawm -30 ° C), zoo compatibility nrog rau lwm cov ntaub ntawv polymer, siab decomposition kub, decomposition los tsim HCl, HCL tuaj yeem catalyze cov tshuaj tiv thaiv dechlorination ntawm CPE. Chlorinated polyethylene yog cov khoom siv polymer ua los ntawm high-density polyethylene (HDPE) los ntawm cov tshuaj chlorination hloov pauv. Raws li cov qauv sib txawv thiab kev siv, chlorinated polyethylene tuaj yeem muab faib ua hom chlorinated polyethylene (CPE) thiab elastomer hom chlorinated polyethylene (CM). Ntxiv rau kev siv ib leeg, cov khoom siv thermoplastic 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 tuaj yeem siv los ua cov roj hmab tshwj xeeb zoo, thiab tseem tuaj yeem siv nrog ethylene-propylene roj hmab (EPR), butyl roj hmab (IIR), nitrile roj hmab (NBR), chlorosulfonated polyethylene ( CSM), thiab lwm yam khoom siv roj hmab.
