Isidingo semakethe sephuzu elincibilikayo eliphezulu PP
Ukusebenza kokuncibilika kokuncibilika kwe-polypropylene kuhlobene eduze nesisindo sayo samangqamuzana. Isilinganiso sesisindo samangqamuzana se-polypropylene resin yezohwebo esilungiselelwe uhlelo oluvamile lwe-Ziegler Natta catalytic ngokuvamile luphakathi kuka-3 × 105 no-7 × 105. Inkomba yokuncibilika yalezi ezivamilepolypropylene resinsngokuvamile iphansi, okukhawulela ububanzi bohlelo lwabo lokusebenza.
Ngokuthuthuka okusheshayo kwemboni yefayibha yamakhemikhali kanye nemboni yemishini yendwangu, imboni yendwangu engalukiwe ikhule ngokushesha. Uchungechunge lwezinzuzo ze-polypropylene lwenza kube yimpahla eluhlaza ethandwayo yezindwangu ezingalukiwe. Ngokuthuthuka komphakathi, izinkambu zokusetshenziswa kwezindwangu ezingezona ezilukiwe ziba zibanzi. Emkhakheni wezokwelapha nempilo, izindwangu ezingezona ezilukiwe zingasetshenziswa ukwenza amasudi okuzihlukanisa, imaski, izingubo zokuhlinza, ama-napkins ahlanzekile abesifazane, ama-diaper abantwana, njalonjalo; Njengesakhiwo kanye nezinto ze-geotechnical, izindwangu ezingezona ezilukiwe zingasetshenziselwa ukuvimbela amanzi ophahleni, ukwakhiwa komgwaqo, ubunjiniyela bokulondoloza amanzi, noma uphahla oluphezulu oluzwakalayo lungakhiqizwa kusetshenziswa ubuchwepheshe be-spunbond nenaliti epunched composite. Impilo yayo yesevisi yinde izikhathi ezi-5-10 kune-asphalt yendabuko ezwakalayo; Izinto zokuhlunga nazo zingomunye wemikhiqizo ethuthuka ngokushesha yezindwangu ezingalukiwe, ezingasetshenziselwa ukuhlunga igesi noketshezi ezimbonini ezifana namakhemikhali omile, ezemithi, nokudla, futhi zinamandla amakhulu emakethe; Ngaphezu kwalokho, izindwangu ezingalukiwe zingasetshenziswa ekwenzeni isikhumba sokwenziwa, imithwalo, indwangu yezingubo, izindwangu zokuhlobisa, nezindwangu zokusula ezisetshenziswa ekhaya.
Impela kungenxa yokuthuthuka okuqhubekayo kweizindwangu ezingalukiweukuthi izidingo zokukhiqizwa nokusetshenziswa kwazo zikhula njalo, njengokuncibilika okuncibilikisiwe, ukukhiqizwa kwesivinini esikhulu, imikhiqizo emincane, njll. Ngakho-ke, izidingo zokucubungula ukusebenza kwe-polypropylene resin, impahla eluhlaza eyinhloko yezindwangu ezingezona ezilukiwe, nazo ziye zanda ngokuhambisana; Ngaphezu kwalokho, ukukhiqizwa kwe-high-speed spinning noma i-fine denier polypropylene fibers nakho kudinga i-polypropylene resin ukuze kube nokusebenza okuhle kokuncibilika kokugeleza; Ezinye izingulube ezingakwazi ukumelana namazinga okushisa aphezulu zidinga i-polypropylene njengesithwali esinamazinga okushisa aphansi okucubungula. Konke lokhu kudinga ukusetshenziswa kwe-ultra-high melt index polypropylene resin njengento eluhlaza engacutshungulwa emazingeni okushisa aphansi.
Impahla ekhethekile yendwangu encibilikisiwe yi-polypropylene ene-high melt index. Inkomba ye-Melt isho inqwaba yezinto ezincibilikisiwe ezidlula eshubhuni elivamile le-capillary njalo ngemizuzu eyi-10. Lapho inani liphakeme, kuba ngcono uketshezi lokucubungula kwezinto. Uma iphezulu inkomba yokuncibilika kwe-polypropylene, kulapho imicu efafazwa kahle kakhulu, futhi kuba ngcono nokusebenza kokuhlunga kwendwangu encibilikisiwe ekhiqizwayo.
Indlela yokulungiselela inkomba ephezulu yokuncibilika kwe-polypropylene resin
Enye iwukulawula isisindo samangqamuzana kanye nokusatshalaliswa kwesisindo samangqamuzana e-polypropylene ngokulawula inqubo yokusabela kwe-polymerization, njengokunciphisa isisindo samangqamuzana e-polymer ngokwandisa ukuhlangana kwama-cationic agents afana negesi ye-hydrogen, ngaleyo ndlela kuthuthukiswe inkomba yokuncibilika. Le ndlela inqunyelwe izici ezifana nesistimu ye-catalytic kanye nezimo zokusabela, okwenza kube nzima ukulawula ukuzinza kwenkomba yokuncibilika nokuyisebenzisa.
I-Yanshan Petrochemical ibilokhu yenza i-polymerizing izinto ezincibilikayo ezincibilikayo ngenkomba encibilikayo engaphezu kuka-1000 isebenzisa ama-metallocene catalysts eminyakeni embalwa edlule. Ngenxa yobunzima bokulawula ukuzinza, i-polymerization enkulu ayizange yenziwe. Selokhu kwaqubuka lolu bhubhane kulo nyaka, i-Yanshan Petrochemical yamukele ukucekelwa phansi okulawulekayo kwe-polypropylene melt blown material production technology eyakhiwe ngo-2010 ukuze kukhiqizwe i-polypropylene incibilikisa indwangu engeyona eyelukiwe impahla ekhethekile ngoFebhuwari 12. Ngesikhathi esifanayo, ukuhlolwa kwezimboni kuye kwenziwa kudivayisi kusetshenziswa ama-catalysts e-metallocene. Umkhiqizo ukhiqiziwe futhi okwamanje uthunyelwa kubasebenzisi abazansi nomfula ukuze bahlolwe.
Enye indlela ukulawula ukuwohloka kwe-polypropylene etholwe ngokusebenzisa i-polymerization evamile, ukunciphisa isisindo sayo samangqamuzana, nokwandisa inkomba yayo yokuncibilika.
Esikhathini esidlule, izindlela zokuwohloka kwezinga lokushisa eliphezulu zazivame ukusetshenziselwa ukunciphisa isisindo samangqamuzana e-polypropylene, kodwa le ndlela yokushisa yomshini wokushisa ophezulu inezithiyo eziningi, njengokulahlekelwa okungeziwe kanye nokubola okushisayo, nezinqubo ezingazinzile. Ngaphezu kwalokho, kunezindlela ezifana nokuchithwa kwe-ultrasonic, kodwa lezi zindlela zivame ukudinga ukuba khona kwe-solvents, okwandisa ubunzima nezindleko zenqubo. Eminyakeni yamuva, izindlela zokuwohloka kwamakhemikhali e-polypropylene ziye zasetshenziswa kancane kancane.
Ukukhiqizwa kwe-High Melt Finger PP nge-Chemical Degradation Method
Indlela yokuwohloka kwamakhemikhali ihilela ukusabela i-polypropylene ngezisebenzeli zokuwohloka kwamakhemikhali njengama-peroxides ephilayo ku-screw extruder, okubangela ukuba iketango lamangqamuzana e-polypropylene liphuke futhi linciphise isisindo samangqamuzana. Uma kuqhathaniswa nezinye izindlela zokuwohloka, inezinzuzo zokuwohloka ngokuphelele, ukuncibilika okuhle kokuncibilika, inqubo elula nenokwenzeka yokulungiselela, futhi kulula ukwenza ukukhiqizwa kwezimboni ezinkulu. Lena futhi indlela evame ukusetshenziswa kakhulu ngabakhiqizi bepulasitiki abashintshiwe.
Izidingo zezisetshenziswa
Iphuzu elincibilikayo eliphakeme lihluke ngokuphelele kumishini evamile yokuguqula i-PP. Izisetshenziswa zokufafaza izinto ezincibilikisiwe zidinga ukulinganisa okude, futhi ikhanda lomshini lidinga ukuma noma lisebenzise i-granulation engaphansi kwamanzi (i-Wuxi Huachen inokusikwa okufanayo ngaphansi kwamanzi); Izinto ezibonakalayo zincane kakhulu futhi zidinga ukuthintana namanzi ngokushesha ngemva kokuphuma ekhanda lomshini ukuze kuphole kalula;
Ukuze kukhiqizwe i-polypropylene evamile, isivinini sokusika se-extruder singamamitha angu-70 ngomzuzu, kuyilapho i-polypropylene ephezulu yokuncibilika, isivinini sokusika sidingeka sibe ngaphezu kwamamitha angu-120 ngomzuzu. Ukwengeza, ngenxa yezinga lokugeleza okusheshayo kwe-polypropylene ephezulu yokuncibilika, ibanga layo lokupholisa lidinga ukunyuswa ukusuka kumamitha angu-4 kuya kumamitha angu-12.
Umshini wokwenza izinto ezincibilikayo ezincibilikayo udinga ukushintshwa kwemeshi okuqhubekayo, ngokuvamile kusetshenziswa isishintshi semeshi esikabili. Izidingo zamandla emoto ziphakeme kakhulu, futhi amabhulokhi amaningi okugunda azosetshenziswa ngaphakathi kwezingxenye zesikulufu; Ngokuka-Koyapan, umugqa wesikulufa esingamawele owenziwe ngezinto ezikhethekile ezincibilikayo unokwehluka okukhulu.
1. Ukuqinisekisa ukudla okuzinzile (PP, DCP, njll.);
2. Thola i-aspect ratio efanele kanye nokuma kwe-axial kokuvula ngokusekelwe kuhhafu wempilo yefomula eyinhlanganisela (eguqukele esizukulwaneni sesithathu ukuze kuqinisekiswe ukukhishwa okubushelelezi kokusabela kwe-CR-PP);
3. Ukuqinisekisa ukuthi umunwe oncibilikayo unesivuno esikhulu phakathi kwebanga lokubekezelelana (amapheshana aqediwe angaphezu kuka-30 anokusebenza kahle kwezindleko kanye nesisekelo sokuhlanganisa uma kuqhathaniswa neshumi nambili kuphela);
4. Amakhanda esikhunta esikhethekile sokudonsa amanzi kufanele afakwe. Ukuncibilika nokushisa kufanele kube okufanayo, futhi inani lemfucuza kufanele libe lincane;
5. Kungcono ukuba ifakwe i-granulator yokusika ebandayo evuthiwe yezinto ezincibilikayo eziqhumayo (ezinedumela elihle embonini) ukuze kuqinisekiswe ikhwalithi yezinhlayiya eziqediwe kanye nezinga eliphakeme lebanga;
6. Kungaba ngcono nakakhulu uma kunempendulo yokuhlola ku-inthanethi. Ngaphezu kwalokho, ukwengezwa kweziqalisi zokuwohloka koketshezi ekuphakeleni okuseceleni kudinga ukunemba okuphezulu ngenxa yengxenye encane yezithasiselo. Okwemishini yokudla eseceleni, efana neBrabenda engenisiwe, iKubota, iMatsunai ekhiqizwa ekhaya, njll.
Ama-catalysts asetshenziswa njengamanje
1: I-Dit-butyl peroxide, eyaziwa nangokuthi i-di-tert-butyl peroxide, initiator a, vulcanizing agent dTBP, iwuketshezi olungenambala ukuya kokuphuzi kancane olubonisa ngale olungancibiliki emanzini futhi luxubane nezinyibilikisi zemvelo ezifana ne-benzene, toluene, ne-acetone. I-oxidizing enamandla, iyavutha, iqinile uma kuqhathaniswa negumbi lokushisa, ayizwani nomthelela.
2: I-sulfurizer ephindwe kabili emihlanu, efushanisiwe njenge-DBPH, igama lekhemikhali 2,5-dimethyl-2,5-bis (tert butylperoxy) hexane, isisindo se-molecular 290.44. Uketshezi oluphuzi oluphaphathekile olunokuminyana okuhlobene okungu-0.8650 ngendlela yomsindo kanye nempushana emhlophe ebisi. Indawo yokubanda ingu-8 ℃. Iphoyinti lokubilisa 50~52 ℃ (13Pa). Inkomba ye-refractive isukela ku-1.418 iye ku-1.419. I-viscosity yoketshezi ingu-6.5mPa. s. Iphoyinti elikhanyayo (inkomishi evulekile) 58 ℃. Incibilika kuzincibilikisi eziningi eziphilayo ezifana notshwala, ama-ether, ama-ketone, ama-ester, ama-hydrocarbon anephunga elimnandi, njll., engancibiliki emanzini.
3: Ukuhlolwa kweminwe ehlanganisiwe
Ukuhlolwa komunwe wokuncibilika kudinga ukwenziwa ngokuhambisana ne-GBIT 30923-2014 Polypropylene Melt Spray Special Materials; Izinsimbi ezijwayelekile ze-melt finger azikwazi ukuhlolwa. Ukuncibilika okuphezulu kubhekisela ekusebenziseni indlela yevolumu kunendlela yobuningi bokuhlola.
Imishini yasendlini ihlanganisa i-Chengde Youte, i-Guangxin Electronic Technology, i-Hangzhou Jinmai, i-Jilin Science and Education Instrument Factory, kanye nezinto zokusebenza ezingeniswa kwamanye amazwe zihlanganisa iZwick; i-Chengde Jinjian Testing Instrument Co., Ltd. ikhiqiza imitha yesilinganiso sokuncibilika kwe-MFL-2322H eklanyelwe ngokukhethekile ukukalwa kwe-NVR kwezinto ezisetshenziswayo zokuhlola eziphezulu/eziphezulu, i-polypropylene yasefekthri ehlangabezana ne-GB 309232014 Polypropylene Melt Spray Izinto Ezikhethekile. Ibanga lokuhlola liyi-(500-2500) cm/10min.
Okwamanje, kukhona:
1. I-Shandong Daoen Polymer Materials Co., Ltd
2. I-Hunan Shengjin New Materials Co., Ltd
3. Jinfa Technology Co., Ltd
4. I-Beijing Yishitong New Materials Development Co., Ltd
5. I-Shanghai Huahe Composite Materials Co., Ltd
6. Hangzhou Chenda New Materials Co., Ltd
7. Basel, Dalin, South Korea
Isikhathi sokuthumela: Apr-01-2024