UDINDO WA CPE MU PVC WOOD-PLASTIC COMPOSITES
Pogwiritsa ntchito CPE ndi PVC blended zitseko pulasitiki ndi mawindo, elasticity, toughness ndi otsika kutentha ntchito bwino kwambiri, ndi kukana nyengo, kukana kutentha ndi bata mankhwala ndi zabwino.
Zida zophatikizika za mtengo wa PVC zimapangidwa makamaka ndi utomoni wa PVC ndi zodzaza. Kupyolera mu kuphatikizika ndi ulusi wa zomera, kusintha kwa teknoloji ya formula, ndi kusintha kwa thupi kusakaniza ndi modifier CPE (chlorinated polyethylene) (yokhala ndi zotsatira zowonjezera ndi Kusintha), zomwe zingathe kusintha kuuma, kulimba, mphamvu, kukana kutentha ndi kuchedwa kwamoto kwa mankhwala ( mkati mwazovomerezeka za katundu wakuthupi, kukweza kwa klorini mu CPE, kumapangitsanso kutentha kwa moto), kumawonjezera mphamvu zamanjenje, kuwongolera Kukhazikika komanso kukana kwa PVC.
The extrusion akamagwirira limagwirira wa PVC mtengo-pulasitiki gulu zipangizo ndi yosiyana kwambiri ndi zipangizo wamba pulasitiki. Popeza chigawo chachikulu cha ulusi wa zomera ndi cellulose, mapadi amakhala ndi magulu ambiri a hydroxyl, ndipo magulu a hydroxylwa amapanga ma intermolecular hydrogen bond, omwe amapanga ulusi wa zomera kukhala ndi polarity wamphamvu ndi kuyamwa madzi. Kumbali inayi, zida zambiri za thermoplastic sizikhala za polar ndi hydrophobic, kotero kuyanjana pakati paziwirizi kumakhala koyipa kwambiri, mphamvu yolumikizirana pamawonekedwe ndi yaying'ono, ndipo kuchuluka kwa ulusi wazomera kumakhala kokulirapo, kotero kuti fluidity ndi processability wa zinthu kukhala osauka , knead ndi extrusion akamaumba kukhala zovuta. Chifukwa chake, kukonza mapangidwe azinthu zophatikizika ndi matabwa-pulasitiki kwathandiza kwambiri pakuwongolera ndikuwongolera magwiridwe antchito.
CPE idapangidwa poyambirira mwachangu ngati chosinthira cha PVC, ndipo PVC yosinthidwa ikadali imodzi mwamagawo ofunikira kwambiri a CPE. CPE ili ndi zinthu zabwino kwambiri zodzaza, ndipo zodzaza zingapo zitha kuwonjezeredwa kuti ziwonjezeke zolimba, kuponderezana ndi kupunduka kosatha, ndikuchepetsa mtengo. Mtengo wogwiritsa ntchito wa PVC wosinthidwa umasinthidwanso.
Mu mapulogalamu osinthidwa a CPE ndi zinthu zolimba za PVC, poyerekeza ndi ma polima ena monga PE ndi PP, mphamvu yobwezeretsa lawi ndi yofunika kwambiri. Zinthu zambiri zolimba za PVC zimasinthidwa ndi chosinthira cha CPE chokhala ndi klorini 36%, ndipo mphamvu zake zokulirapo nthawi zambiri zimapezedwa ndi CPE yokhala ndi maatomu a chlorine omwe amagawika mwachisawawa pa unyolo waukulu wa polyethylene. Chifukwa chake, chosinthirachi chitha kusinthidwa kwambiri potengera kusinthika, kufalikira, komanso mphamvu yamphamvu.
KUGWIRITSA NTCHITO KWA CPE PA WAYA WOSANGALATSA NTCHITO, TIYALO, LAMBA
Popeza molekyulu ya CPE ilibe maunyolo awiri, imakhala ndi kukana kwanyengo yabwino, kukana moto, kukhazikika kwamafuta kuposa PVC, mtengo wotsika komanso magwiridwe antchito abwino kwambiri. Amasungunuka mu ma hydrocarbon onunkhira ndi ma halogenated hydrocarbons, osasungunuka mu aliphatic hydrocarbons, amawola pamwamba pa 170 ° C, ndikutulutsa mpweya wa hydrogen chloride. Ili ndi mawonekedwe okhazikika a mankhwala, kukana kukalamba kwambiri, kukana kwamoto, kukana kuzizira, kukana nyengo, utoto waulere, kukana Chemical, kukana ozoni ndi kutchinjiriza magetsi, kuyanjana kwabwino ndi processability, zitha kuphatikizidwa ndi PVC, PE, PS ndi mphira onjezerani mphamvu zake zakuthupi.
CPE ndi mtundu watsopano wa zinthu kupanga ndi mndandanda wa katundu kwambiri. Ndiwosintha kwambiri pamapulasitiki a PVC komanso mphira wopangira wokhala ndi zinthu zambiri. Ili ndi ntchito zambiri ndipo yakhala ikugwiritsidwa ntchito kwambiri mu zingwe, mawaya, mapaipi, matepi, mphira ndi zinthu zapulasitiki, zida zosindikizira, ndi malamba onyamula moto oletsa moto. , Madzi nembanemba, filimu ndi zosiyanasiyana profiled zipangizo ndi zinthu zina. CPE imathanso kuphatikizidwa ndi polypropylene, polyethylene yapamwamba komanso yotsika, ABS, ndi zina zambiri kuti zithandizire kukhazikika kwa lawi, kukana kukalamba komanso kusindikiza mapulasitiki awa. CPE akhoza kuonedwa ngati copolymer mwachisawawa wa ethylene, polyethylene ndi 1.2-dichlorethylene. Unyolo wake wa molekyulu umakhala wodzaza ndipo maatomu a polar chlorine amagawidwa mwachisawawa. Chifukwa cha mphamvu zake zakuthupi ndi zamankhwala, amagwiritsidwa ntchito kwambiri m'makina ndi magetsi. , mankhwala, zomangira ndi mafakitale migodi. CPE kutentha kukana, kukana kwa ozoni ndi kukana nyengo, kukana kukalamba kuli bwino kuposa mphira wambiri, kukana mafuta kuli bwino kuposa mphira wa nitrile (ABR), neoprene (CR), kukana kukalamba kuli bwino kuposa chlorosulfonated vinyl chloride (CSM); asidi kukana, Alkali, mchere ndi zina zikuwononga katundu, sanali poizoni, retardant lawi, palibe ngozi kuphulika.
KUGWIRITSA NTCHITO KWA CPE MU INK
Chlorinated polyethylene akhoza kukonzedwa ndi jekeseni akamaumba ndi extrusion akamaumba. Komabe, popeza CPE ili ndi maatomu ambiri a klorini, gawo lina la zotsitsimutsa kutentha, antioxidants ndi zolimbitsa thupi ziyenera kuwonjezeredwa ku CPE musanayambe kuumba kuti muteteze kukhazikika kwa mapangidwe ake ndi ntchito yake. Low-chlorine CPEs amapezekanso mu akamaumba rotational ndi kuwomba akamaumba.
Pakali pano, chlorinated polyethylene imagwiritsidwa ntchito makamaka ngati chosinthira cha PVC, HDPE ndi MBS mumakampani opanga mapulasitiki. Pambuyo kusakaniza gawo lina la CPE mu polyvinyl koloyidi utomoni, akhoza extruded mu zinthu monga mapaipi, mbale, waya kutchinjiriza zokutira, mbiri, mafilimu, shrink mafilimu, etc. ndi ambiri PVC processing zida; itha kugwiritsidwanso ntchito ❖ kuyanika, psinjika akamaumba, etc. Pulasitiki, lamination, kugwirizana, etc.; amagwiritsidwa ntchito ngati chosinthira cha PVC ndi PE, chomwe chimatha kupititsa patsogolo ntchito zamalonda, kupititsa patsogolo kusungunuka, kulimba komanso kutentha kwa PVC, ndi kuchepetsa kutentha kwa embrittlement kufika -40 ° C; kukana nyengo , kukana kutentha ndi kukhazikika kwa mankhwala kumakhalanso kwapamwamba kuposa zosintha zina; monga chosinthira cha PE, imatha kusintha kusindikiza, kuchedwa kwamoto komanso kusinthasintha kwa zinthu zake, ndikuwonjezera kuchuluka kwa thovu la PE.
Chlorinated polyethylene resin ndi mtundu watsopano wazinthu zopangidwa ndi mndandanda wazinthu zabwino kwambiri. Ndiwosintha kwambiri pamapulasitiki a PVC komanso mphira wopangira wokhala ndi zinthu zambiri. Ili ndi ntchito zambiri ndipo yakhala ikugwiritsidwa ntchito kwambiri mu zingwe, mawaya, mapaipi, matepi, mphira ndi zinthu zapulasitiki, zida zosindikizira, ndi malamba onyamula moto oletsa moto. , Madzi nembanemba, filimu ndi zosiyanasiyana profiled zipangizo ndi zinthu zina. CPE imathanso kuphatikizidwa ndi polypropylene, polyethylene yapamwamba komanso yotsika, ABS, ndi zina zambiri kuti zithandizire kukhazikika kwa lawi, kukana kukalamba komanso kusindikiza mapulasitiki awa. CPE akhoza kuonedwa ngati copolymer mwachisawawa wa ethylene, polyethylene ndi 1.2-dichlorethylene. Unyolo wake wa molekyulu umakhala wodzaza ndipo maatomu a polar chlorine amagawidwa mwachisawawa. Chifukwa cha mphamvu zake zakuthupi ndi zamankhwala, amagwiritsidwa ntchito kwambiri m'makina ndi magetsi.
mankhwala, zomangira ndi mafakitale migodi. CPE kutentha kukana, kukana kwa ozoni ndi kukana nyengo, kukana kukalamba kuli bwino kuposa mphira wambiri, kukana mafuta kuli bwino kuposa mphira wa nitrile (ABR), neoprene (CR), kukana kukalamba kuli bwino kuposa chlorosulfonated vinyl chloride (CSM); asidi kukana, Alkali, mchere ndi zina zikuwononga katundu, sanali poizoni, retardant lawi, palibe ngozi kuphulika.
Amagwiritsidwa ntchito makamaka mu: waya ndi chingwe (zingwe za mgodi wa malasha, mawaya otchulidwa mu UL ndi VDE miyezo), ma hydraulic hoses, hoses zamagalimoto, matepi, mapepala a mphira, kusintha kwa chitoliro cha PVC, zipangizo zamaginito, kusinthidwa kwa ABS, etc.
KUGWIRITSA NTCHITO KWA CPE MU FILM
1. Pulasitiki ndi ma antioxidants omwe amagwiritsidwa ntchito mu mphira ndi mapulasitiki ndi othandiza kwambiri mu PVC yokhazikika komanso yofewa, makamaka popanga jekeseni ndi zinthu zachiwiri zosinthidwa. Gwiritsani ntchito CPE ngati PVC plasticizer, palibe kuzirala, kusamuka, palibe m'zigawo, ndipo ali kukana ozonation ndi dzimbiri kukana, ngakhale zabwino. Popanga mafilimu, zikopa zopangira, nsapato za nsapato, ma hoses, ndi zina zotero, zimatha kuonjezera kufewa, mtundu komanso kutalika kwa moyo wautumiki wa mankhwala. Amagwiritsidwa ntchito popanga mapaipi odana ndi dzimbiri, mawaya, mbale, ndi zida zoponderezedwa zamagawo amafuta, ndipo mtengo wake ndi 30% mpaka 40% wotsika kuposa PVC ina yosinthidwa. Chithovu chosagwira moto komanso chopanda kuzizira chimatha kupangidwa pophatikiza CPE ndi PE ndi PP, ndipo magwiridwe ake ndi abwino kuposa a thovu la polyurethane ndi polystyrene. Kugwiritsa ntchito CPE ngati plasticizer yokhazikika ya ABS, AS, PS, ndi zina zambiri popanga zipolopolo za zida zapanyumba, zomangira, zida zamagalimoto, zida zamagetsi ndi zamagetsi, komanso matepi oletsa moto amatha kuchepetsa ndalama.
2. Zomwe zimagwiritsidwa ntchito muzinthu zamagulu a mphira CPE ndi rabara yapadera yopangidwa ndi ntchito yabwino kwambiri, makamaka yoyenera mawaya ndi zingwe zokhala ndi zofunikira kwambiri pa kutentha kwa kutentha, kutentha kwa moto ndi mphamvu zamagetsi, ndi malamba oyendetsa moto othamanga kwambiri. Itha kugwiritsidwanso ntchito popanga mapaipi amafuta, kumanga zingwe zopanda madzi ndi zida zamagetsi zomangira, etc. Rubber wopangidwa ndi CPE zotanuka m'munsi ndi wapamwamba kuposa neoprene pankhani ya kukana kuvala, katundu wa dielectric, kukana kutentha, kukana kukalamba, kukana mafuta, etc. Mofanana ndi mphira, mtengo wake ndi wotsika kuposa mphira wa neoprene ndi nitrile, ndipo ukhoza kugwiritsidwa ntchito mu mafakitale a waya ndi chingwe, mbali zamagalimoto, kutentha kwakukulu ndi mafuta osamva ma hoses, hoses, ndi zina zotero. zofanana ndi mphira wa chlorine. Kuphatikiza apo, CPE imagwiritsidwanso ntchito kwambiri pazinthu zosiyanasiyana za mphira.
3. CPE blend CPE / styrene / acrylonitrile copolymer imakhala ndi kukana kwakukulu, kutentha kwa moto, kukana kwa nyengo ndi kutsika kwa kutentha, ndipo gawo lake logwiritsira ntchito likhoza kupikisana ndi ABS. CPE/styrene/methacrylic acid copolymer ili ndi mphamvu zambiri, kuwonekera komanso kukhazikika kwanyengo. Kuphatikiza CPE ndi NBR kumatha kusintha zinthu zosiyanasiyana za NBR ndipo zitha kugwiritsidwa ntchito popanga payipi ya rabara yosagwira mafuta. CPE itha kugwiritsidwa ntchito limodzi ndi SBR kupanga mapaipi a mphira ndi nembanemba zopanda madzi; amagwiritsidwa ntchito limodzi ndi mphira wamba, atha kugwiritsidwa ntchito ngati zopangira mphira monga nsalu za mvula, matayala anjinga amitundumitundu, ma ngalande a mpweya osayaka, ndi zingwe. Ku Japan, makamaka CPE ndi blended ndi mphira ndi pulasitiki zipangizo kusintha processing ntchito, mankhwala maonekedwe ndi khalidwe mkati. Ndi kuwonjezeka kwa CPE linanena bungwe ndi kusintha luso processing, CPE / Eva zikuphatikizananso akhoza kupangidwa, amene ali wabwino dimensional bata ndi ntchito kupanga mbale kusungidwa pa kutentha otsika. CPE/chlorinated styrene imagwiritsidwa ntchito popanga zotsekera magetsi, thovu loletsa moto, zokutira, ndi zina zambiri.
4. CPE ya zokutira zapadera ndi zingwe zopanda madzi zimatha kupangidwa kukhala zokutira zapadera, monga anti-corrosion anti-corrosion, anti-fouling, zokutira madzi, ndi zina zotero, kuti zilowe m'malo mwa zokutira zina. CPE/PVC ndi blended kupanga nembanemba madzi, amene ndi m'ma kalasi zinthu zosalowa madzi. Kusasunthika kwake kwa nyengo, kukana kwa ozoni, ndi kuchedwa kwa malawi ndi zofanana ndi zamtundu wapamwamba wa rabara wa ethylene-propylene, ndipo zimakhala zotsika mtengo komanso ntchito yabwino yomanga. Kusungunula CPE muzosungunulira wamba kumatha kupanga zokutira zotsutsana ndi dzimbiri. Pambuyo kusakaniza CPE ndi phula, ndi zina zotero, nthawi zambiri amagwiritsidwa ntchito popanga zokutira zopanda madzi padenga ndi ntchito yabwino.
5. Polyethylene ya chlorinated High-chlorinated polyethylene imakhala ndi klorini yokwanira 61% mpaka 75%. Ndi chinthu cholimba, chopanda kutentha, chofanana ndi galasi lamphamvu kwambiri, komanso filimu yopanga mafilimu yokhala ndi zinthu zabwino kwambiri. Ikhoza kusakanikirana ndi utoto wa alkyd, epoxy resin, phenolic, polyester yosakanizidwa, polyacrylate, etc. Kuchedwa kwake kwa lawi, kusachita dzimbiri, kusagwira ntchito kwa nyengo, komanso kulimba kwake zonse ndizabwino kuposa mphira wa chlorinated. M'malo mwa mphira wa chlorine. Kwambiri klorini polyethylene ali zabwino adhesion katundu zitsulo ndi konkire, choncho ali ogwira zoteteza zotsatira pa zipangizozi. Polyethylene yokhala ndi chlorinated kwambiri imakhala ndi miscibility yabwino yokhala ndi inorganic and organic pigments, ndipo imatha kugwiritsidwa ntchito kupanga zokutira zoletsa moto.
6. Ntchito zina Kuwonjezera CPE pamafuta amafuta kumatha kuchepetsa kuzizira kwake, ndipo zowonjezera zamafuta amafuta zimatha kukulitsa kukana kwamafuta kukakamiza. Kuwonjezera CPE pakudula mafuta ndi kubowola mafuta kumatha kupititsa patsogolo moyo wautumiki wa zida. Kuphatikiza apo, CPE imagwiritsidwanso ntchito muzofewa zachikopa ndi zokhuthala za inki zosindikizira, ndi zina zambiri, ndipo mawonekedwe ake akuchulukirachulukira.
KODI UDINDO WAKUWONJEZA CPE PA PLASTIC PRODUCTION NDI CHIYANI?
Chlorinated polyethylene (CPE) ndi zinthu za polima zodzaza, mawonekedwe ake ndi ufa woyera, wopanda poizoni komanso wopanda kukoma, ali ndi kukana kwanyengo, kukana kwa ozoni, kukana kwa mankhwala komanso kukana kukalamba, komanso kukana mafuta bwino, kuchedwa kwamoto komanso kukongoletsa utoto. Kulimba kwabwino (kumasinthabe pa -30 ° C), kugwirizanitsa bwino ndi zipangizo zina za polima, kutentha kwakukulu kwa kuwonongeka, kuwola kuti apange HCl, HCL ikhoza kuchititsa kuti CPE iwonongeke. Chlorinated polyethylene ndi polima wopangidwa kuchokera ku high-density polyethylene (HDPE) kudzera m'malo mwa chlorination. Malinga ndi kapangidwe ndi ntchito zosiyanasiyana, chlorinated polyethylene akhoza kugawidwa mu utomoni mtundu chlorinated polyethylene (CPE) ndi elastomer mtundu chlorinated polyethylene (CM). Kuphatikiza pa kugwiritsidwa ntchito kokha, ma resins a thermoplastic amathanso kusakanikirana ndi polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), ABS komanso polyurethane (PU). M'makampani a mphira, CPE ingagwiritsidwe ntchito ngati mphira wapamwamba kwambiri, wapamwamba kwambiri, ndipo ingagwiritsidwe ntchito ndi mphira wa ethylene-propylene (EPR), mphira wa butyl (IIR), mphira wa nitrile (NBR), chlorosulfonated polyethylene ( CSM), etc. Zosakaniza zina za mphira zimagwiritsidwa ntchito.
