Udindo wa CPE mu PVC Wood-Pulasitiki Composites
Pogwiritsa ntchito zitseko ndi mawindo apulasitiki osakanikirana ndi CPE ndi PVC, kusinthasintha, kulimba, ndi magwiridwe antchito otsika kutentha zimawonjezeka kwambiri, ndipo kukana nyengo, kukana kutentha, komanso kukhazikika kwa mankhwala ndikwabwino.
Zipangizo zopangidwa ndi pulasitiki wa mtengo wa PVC zimapangidwa makamaka ndi utomoni wa PVC ndi zodzaza. Kupyolera mu kuphatikiza ndi ulusi wa zomera, kusintha ukadaulo wa formula, ndi kusintha kwa kusakaniza kwa thupi ndi modifier CPE (chlorinated polyethylene) (ndi zotsatira zowonjezera ndi zotsatira zosinthira), zomwe zingathandize kuuma, kulimba, mphamvu, kukana kutentha ndi kuchedwa kwa moto kwa chinthucho (mkati mwa zofunikira zovomerezeka za katundu weniweni, kuchuluka kwa chlorine mu CPE, kumachepetsa mphamvu ya kuchedwa kwa moto), kumawonjezera mphamvu yogwira, kumawonjezera kufooka ndi kukana kwa PVC.
Njira yopangira zinthu zopangidwa ndi PVC kuchokera ku mtengo ndi pulasitiki ndi yosiyana kwambiri ndi ya zinthu wamba zapulasitiki. Popeza gawo lalikulu la ulusi wa zomera ndi cellulose, cellulose ili ndi magulu ambiri a hydroxyl, ndipo magulu a hydroxyl awa amapanga ma hydrogen bond apakati pa molekyulu, zomwe zimapangitsa kuti ulusi wa zomera ukhale ndi polarity yamphamvu komanso kuyamwa madzi. Kumbali ina, zinthu zambiri za thermoplastic sizili polar komanso sizimawopa madzi, kotero kugwirizana pakati pa ziwirizi n'kochepa kwambiri, mphamvu yolumikizirana pamalo olumikizirana ndi yochepa, ndipo kuchuluka kwa ulusi wa zomera ndi kwakukulu, kotero kusinthasintha ndi kusinthika kwa zinthuzo kumakhala kofooka, kukanda ndi kuyika zinthuzo kumakhala kovuta. Chifukwa chake, kukonza kapangidwe ka zinthu zopangidwa ndi matabwa ndi pulasitiki kwakhala ndi gawo labwino pakukonza kukonza ndi kugwira ntchito kwa zinthuzo.
CPE idapangidwa mwachangu ngati chosinthira cha PVC, ndipo PVC yosinthidwa ikadali imodzi mwamagawo ofunikira kwambiri a CPE. CPE ili ndi mawonekedwe abwino kwambiri odzaza, ndipo ma filler ambiri amatha kuwonjezeredwa kuti akonze mawonekedwe ake omangika, kupsinjika ndi kusintha kosatha, ndikuchepetsa ndalama. Kugwiritsa ntchito PVC yosinthidwa kumawongoleredwanso.
Mu mapulogalamu osinthidwa a CPE ndi zinthu zolimba za PVC, poyerekeza ndi ma polima ena monga PE ndi PP, mphamvu yoletsa moto ndi yofunika kwambiri. Zinthu zambiri zolimba za PVC zimasinthidwa ndi CPE modifier yokhala ndi chlorine ya 36%, ndipo mphamvu yake yayikulu yokhudza mphamvu nthawi zambiri imapezeka ndi CPE ndi maatomu a chlorine omwe amagawidwa mwachisawawa pa unyolo waukulu wa polyethylene. Chifukwa chake, modifier iyi ikhoza kusinthidwa kwambiri pankhani ya kuthekera kokonza, kufalikira, ndi mphamvu yokhudza mphamvu.
KUGWIRITSA NTCHITO CPE PA CHITSULO CHA WAYA, TAYARA, LAMBA
Popeza molekyulu ya CPE ilibe maunyolo awiri, imakhala ndi kukana kwabwino kwa nyengo, kukana malawi, kukhazikika kwa kutentha kuposa PVC, mtengo wotsika komanso magwiridwe antchito abwino kwambiri. Imasungunuka mu ma hydrocarbons onunkhira ndi ma halogenated hydrocarbons, yosasungunuka mu aliphatic hydrocarbons, imawola pamwamba pa 170 ° C, ndipo imatulutsa mpweya wa hydrogen chloride. Ili ndi kapangidwe kokhazikika ka mankhwala, kukana kukalamba bwino, kukana malawi, kukana kuzizira, kukana nyengo, utoto wopanda, kukana Kukana kwa mankhwala, kukana ozoni ndi kutchinjiriza magetsi, kugwirizana bwino ndi kukonzedwa, ikhoza kusakanikirana ndi PVC, PE, PS ndi rabara kuti ikonze mawonekedwe ake enieni.
CPE ndi mtundu watsopano wa zinthu zopangidwa ndi zinthu zabwino kwambiri. Ndi chosinthira chabwino kwambiri cha mapulasitiki a PVC ndi rabala yopangidwa ndi zinthu zabwino kwambiri. Ili ndi ntchito zambiri ndipo yagwiritsidwa ntchito kwambiri mu zingwe, mawaya, mapayipi, matepi, zinthu za rabala ndi pulasitiki, zinthu zotsekera, ndi malamba otumizira omwe amaletsa moto. , Nembanemba yosalowa madzi, filimu ndi zinthu zosiyanasiyana zophimbidwa ndi zinthu zina. CPE ikhozanso kusakanikirana ndi polypropylene, polyethylene yothamanga kwambiri komanso yotsika, ABS, ndi zina zotero kuti iwonjezere kuchedwa kwa moto, kukana kukalamba komanso magwiridwe antchito osindikiza a pulasitiki awa. CPE ikhoza kuonedwa ngati copolymer yosasinthika ya ethylene, polyethylene ndi 1.2-dichloroethylene. Unyolo wake wa molekyulu ndi wodzaza ndipo maatomu a polar chlorine amagawidwa mwachisawawa. Chifukwa cha makhalidwe ake abwino kwambiri akuthupi ndi a mankhwala, imagwiritsidwa ntchito kwambiri mumakina ndi magetsi. , mankhwala, zipangizo zomangira ndi mafakitale amigodi. Kukana kutentha kwa CPE, kukana ozoni ndi kukana nyengo, kukana ukalamba kuli bwino kuposa mphira yambiri, kukana mafuta kuli bwino kuposa mphira wa nitrile (ABR), neoprene (CR), kukana ukalamba kuli bwino kuposa chlorosulfonated vinyl chloride (CSM); kukana asidi, Alkali, mchere ndi zinthu zina zowononga, si poizoni, sizimaletsa moto, sizimawopseza kuphulika.
Kugwiritsa Ntchito CPE Mu Inki
Polyethylene yokhala ndi chlorine imatha kukonzedwa pogwiritsa ntchito jakisoni wopangira ndi kutulutsa. Komabe, popeza CPE ili ndi maatomu ambiri a chlorine, gawo lina la zolimbitsa kutentha, ma antioxidants ndi zolimbitsa kuwala ziyenera kuwonjezeredwa ku CPE musanayike kuti muteteze kukhazikika kwa kapangidwe kake ndi magwiridwe antchito ake. Ma CPE otsika a chlorine amapezekanso mu rotational molding ndi blow molding.
Pakadali pano, polyethylene yokhala ndi chlorine imagwiritsidwa ntchito kwambiri ngati chosinthira cha PVC, HDPE ndi MBS mumakampani opanga zinthu zapulasitiki. Mukasakaniza gawo lina la CPE mu polyvinyl chloride resin, imatha kutulutsidwa muzinthu monga mapaipi, mbale, zokutira zoteteza waya, ma profiles, mafilimu, mafilimu ochepetsa, ndi zina zotero ndi zida zogwiritsira ntchito PVC; ingagwiritsidwenso ntchito popaka, kupondereza, ndi zina zotero. Pulasitiki, lamination, bonding, ndi zina zotero; imagwiritsidwa ntchito ngati chosinthira cha PVC ndi PE, chomwe chingathandize magwiridwe antchito azinthu, kupititsa patsogolo kusinthasintha, kulimba komanso magwiridwe antchito otsika kutentha kwa PVC, ndikuchepetsa kutentha kwa embrittlement kufika -40°C; kukana nyengo, kukana kutentha ndi kukhazikika kwa mankhwala ndizopambana kuposa zosintha zina; monga chosinthira cha PE, imatha kusintha kusindikizidwa, kuchedwa kwa moto ndi kusinthasintha kwa zinthu zake, ndikuwonjezera kuchuluka kwa thovu la PE.
Utomoni wa polyethylene wothira chlorine ndi mtundu watsopano wa zinthu zopangidwa ndi zinthu zosiyanasiyana zabwino kwambiri. Ndi chosinthira chabwino kwambiri cha mapulasitiki a PVC ndi rabala yopangidwa ndi zinthu zambiri. Ili ndi ntchito zambiri ndipo yagwiritsidwa ntchito kwambiri mu zingwe, mawaya, mapayipi, matepi, zinthu za rabala ndi pulasitiki, zinthu zotsekera, ndi malamba otumizira omwe amaletsa moto. , Nembanemba yosalowa madzi, filimu ndi zinthu zosiyanasiyana zophimbidwa ndi zinthu zina. CPE ikhozanso kusakanikirana ndi polypropylene, polyethylene yothamanga kwambiri komanso yotsika, ABS, ndi zina zotero kuti iwonjezere kuchedwa kwa moto, kukana ukalamba komanso magwiridwe antchito osindikiza a pulasitiki awa. CPE ikhoza kuonedwa ngati copolymer yosasinthika ya ethylene, polyethylene ndi 1.2-dichloroethylene. Unyolo wake wa molekyulu ndi wodzaza ndipo maatomu a polar chlorine amagawidwa mwachisawawa. Chifukwa cha makhalidwe ake abwino kwambiri a thupi ndi mankhwala, imagwiritsidwa ntchito kwambiri mumakina ndi magetsi.
mankhwala, zipangizo zomangira ndi mafakitale a migodi. Kukana kutentha kwa CPE, kukana ozoni ndi kukana nyengo, kukana ukalamba kuli bwino kuposa mphira yambiri, kukana mafuta kuli bwino kuposa mphira wa nitrile (ABR), neoprene (CR), kukana ukalamba kuli bwino kuposa chlorosulfonated vinyl chloride (CSM); kukana asidi, Alkali, mchere ndi zinthu zina zowononga, si poizoni, woletsa moto, wopanda ngozi yophulika.
Amagwiritsidwa ntchito makamaka mu: waya ndi chingwe (zingwe za mgodi wa malasha, mawaya otchulidwa mu miyezo ya UL ndi VDE), mapayipi a hydraulic, mapayipi a magalimoto, matepi, mapepala a rabara, kusintha kwa mapaipi a PVC, zida zamaginito, kusintha kwa ABS, ndi zina zotero.
Kugwiritsa Ntchito CPE Mu Filimu
1. Mapulasitiki ndi ma antioxidants omwe amagwiritsidwa ntchito mu rabara ndi mapulasitiki ndi othandiza kwambiri mu PVC yolimba komanso yofewa, makamaka mu jekeseni wopangira ndi zinthu zina zokonzedwa. Gwiritsani ntchito CPE ngati pulasitiki ya PVC, palibe kutha, palibe kusamuka, palibe kuchotsa, ndipo imakhala ndi kukana kwa ozoni ndi dzimbiri, imagwirizana bwino. Mukamapanga mafilimu, chikopa chochita kupanga, zidendene za nsapato, mapayipi, ndi zina zotero, imatha kuwonjezera kufewa, mtundu ndi kutalikitsa moyo wa zinthu. Imagwiritsidwa ntchito popanga mapaipi oletsa dzimbiri, mawaya, mbale, ndi zida zokanikizidwa m'minda yamafuta, ndipo mtengo wake ndi wotsika ndi 30% mpaka 40% kuposa PVC ina yosinthidwa. Thovu loletsa moto komanso loletsa kuzizira lingapangidwe posakaniza CPE ndi PE ndi PP, ndipo magwiridwe ake ndi abwino kuposa a polyurethane ndi thovu la polystyrene. Kugwiritsa ntchito CPE ngati pulasitiki yokhazikika ya ABS, AS, PS, ndi zina zotero popanga zipolopolo za zida zapakhomo, ma liners, zida zamagalimoto, zida zamagetsi ndi zamagetsi, ndi matepi oletsa moto kungachepetse ndalama.
2. CPE imagwiritsidwa ntchito mu zinthu zopangidwa ndi rabara, CPE ndi rabara yapadera yopangidwa ndi zinthu zopangidwa ...
3. CPE blend CPE/styrene/acrylonitrile copolymer ili ndi mphamvu yolimba, kuchedwa kwa moto, kukana nyengo komanso kukana kutentha kochepa, ndipo malo ake ogwiritsira ntchito amatha kupikisana ndi ABS. CPE/styrene/methacrylic acid copolymer ili ndi mphamvu yolimba, kuwonekera bwino komanso kukhazikika kwa nyengo. Kusakaniza CPE ndi NBR kumatha kukonza zinthu zosiyanasiyana za NBR ndipo kungagwiritsidwe ntchito kupanga payipi ya rabara yosagwira mafuta. CPE ingagwiritsidwe ntchito limodzi ndi SBR kupanga mapayipi a rabara ndi nembanemba yosalowa madzi; yogwiritsidwa ntchito limodzi ndi rabara yogwiritsidwa ntchito nthawi zonse, ingagwiritsidwe ntchito ngati zinthu za rabara monga nsalu zamvula, matayala a njinga amitundu yosiyanasiyana, ma duct a mpweya oletsa moto, ndi zingwe. Ku Japan, makamaka CPE imasakanizidwa ndi zipangizo za rabara ndi pulasitiki kuti iwonjezere magwiridwe antchito opangira, mawonekedwe azinthu komanso mtundu wamkati. Ndi kuwonjezeka kwa kutulutsa kwa CPE komanso kusintha kwa ukadaulo wopangira, zosakaniza za CPE/EVA zimathanso kupangidwa, zomwe zimakhala ndi kukhazikika kwabwino ndipo zimagwiritsidwa ntchito kupanga mbale zosungidwa kutentha kochepa. CPE/chlorinated styrene imagwiritsidwa ntchito popanga ma insulators amagetsi, thovu loletsa moto, zokutira, ndi zina zotero.
4. CPE ya zokutira zapadera ndi nembanemba zosalowa madzi ingapangidwe kukhala zokutira zapadera, monga zokutira zoletsa dzimbiri, zokutira zoletsa kuipitsa, zokutira zosalowa madzi, ndi zina zotero, kuti zilowe m'malo mwa zokutira zina. CPE/PVC imasakanizidwa kuti ipange nembanemba yosalowa madzi, yomwe ndi chinthu chosalowa madzi chapakati. Kukana kwake nyengo, kukana ozoni, komanso kuchedwa kwa moto ndizofanana ndi za nembanemba za rabara za ethylene-propylene zapamwamba, ndipo zimakhala ndi mtengo wotsika komanso magwiridwe antchito abwino omanga. Kusungunula CPE m'zosungunuka wamba kumatha kupanga zokutira zoletsa dzimbiri. Pambuyo posakaniza CPE ndi phula, ndi zina zotero, nthawi zambiri imagwiritsidwa ntchito popanga zokutira zoletsa madzi padenga zomwe zimagwira ntchito bwino.
5. Polyethylene yokhala ndi chlorine yambiri Polyethylene yokhala ndi chlorine yambiri ili ndi chlorine yokwana 61% mpaka 75%. Ndi chinthu cholimba, chosatentha, chofanana ndi galasi lamphamvu kwambiri, komanso chopanga filimu chokhala ndi makhalidwe abwino kwambiri. Ikhoza kusakanikirana ndi utoto wa alkyd, epoxy resin, phenolic, unsaturated polyester, polyacrylate, ndi zina zotero kuti ipange zokutira zotsutsana ndi dzimbiri zokhala ndi kukhazikika kwabwino kwa mankhwala. Kuchedwa kwake kwa moto, kukana dzimbiri, kukana nyengo, komanso kusinthasintha zonse ndi zabwino kuposa rabara yokhala ndi chlorine. M'malo mwa rabara yokhala ndi chlorine. Polyethylene yokhala ndi chlorine yambiri ili ndi mphamvu zomatira bwino ku chitsulo ndi konkire, kotero imakhala ndi mphamvu yoteteza bwino pazinthuzi. Polyethylene yokhala ndi chlorine yambiri imakhala ndi kusakanikirana bwino ndi utoto wosapangidwa ndi zinthu zachilengedwe komanso zachilengedwe, ndipo ingagwiritsidwe ntchito popanga zokutira zoletsa moto.
6. Ntchito Zina Zowonjezera CPE ku mafuta amafuta kungachepetse nthawi yake yozizira, ndipo zowonjezera za mafuta a zida zingathandize mafuta kukana kupanikizika. Kuwonjezera CPE ku mafuta odulira ndi mafuta obowola kungathandize kuti zida zigwire ntchito bwino. Kuphatikiza apo, CPE imagwiritsidwanso ntchito mu zofewetsa zikopa ndi zokhuthala za inki zosindikizira, ndi zina zotero, ndipo ntchito yake ikukulirakulira nthawi zonse.
Kodi ntchito yowonjezera CPE ndi yotani popanga pulasitiki?
Chlorinated polyethylene (CPE) ndi chinthu chopangidwa ndi polima wokhuta, mawonekedwe ake ndi ufa woyera, wosakhala ndi poizoni komanso wopanda kukoma, uli ndi kukana bwino nyengo, kukana ozone, kukana mankhwala ndi kukalamba, ndipo uli ndi kukana bwino mafuta, kukana malawi komanso kugwira ntchito bwino. Kulimba bwino (kosinthasinthabe pa -30°C), kugwirizana bwino ndi zinthu zina za polima, kutentha kwambiri kwa kuwonongeka, kuwonongeka kuti apange HCl, HCL imatha kuyambitsa kuyankha kwa CPE. Chlorinated polyethylene ndi chinthu chopangidwa ndi polima chopangidwa kuchokera ku polyethylene yapamwamba (HDPE) kudzera mu kusintha kwa chlorination. Malinga ndi kapangidwe ndi ntchito zosiyanasiyana, polyethylene yopangidwa ndi chlorinated ikhoza kugawidwa m'magulu awiri: resin chlorinated polyethylene (CPE) ndi elastomer chlorinated polyethylene (CM). Kuwonjezera pa kugwiritsidwa ntchito kokha, ma resin a thermoplastic amathanso kusakanikirana ndi polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), ABS komanso polyurethane (PU). Mu makampani opanga rabala, CPE ingagwiritsidwe ntchito ngati rabala yapadera yapamwamba komanso yapamwamba kwambiri, ndipo ingagwiritsidwenso ntchito ndi rabala ya ethylene-propylene (EPR), rabala ya butyl (IIR), rabala ya nitrile (NBR), polyethylene ya chlorosulfonated (CSM), ndi zina zotero. Mitundu ina ya rabala imagwiritsidwa ntchito.
