Kudiwa kwemusika kwepamusoro kunyungudika PP
Iko kunyunguduka kuyerera kwe polypropylene kwakabatana zvakanyanya nehuremu hwayo hwema molecular. Avhareji yemamorekuru huremu hwekutengesa polypropylene resin yakagadzirwa neyakajairwa Ziegler Natta catalytic system inowanzo iri pakati pe3 × 105 uye 7 × 105. Iyo melt index yeaya akajairwapolypropylene resinskazhinji yakaderera, izvo zvinoganhurira chiyero chekushandisa kwavo.
Nekukurumidza kusimudzira kweindasitiri yemakemikari faibha uye indasitiri yemachira, iyo isiri-yakarukwa indasitiri yemachira yasimuka nekukurumidza. Iwo akatevedzana mabhenefiti epolypropylene anoita kuti ive iyo yakasarudzika machira emachira asiri akarukwa. Nekuvandudzwa kwevanhu, minda yekushandiswa kwemachira asina kuruka ari kuwedzera. Mumunda wezvokurapa uye hutano, micheka isina-yakarukwa inogona kushandiswa kugadzira masutu ekuzviparadzanisa nevamwe, masikisi, majasi ekuvhiya, machira ehutsanana evakadzi, manapukeni evana, zvichingodaro; Sechivakwa uye geotechnical zvinhu, machira asiri akarukwa anogona kushandiswa kudzivirira mvura padenga, kuvaka migwagwa, mainjiniya ekuchengetedza mvura, kana denga repamusoro rinonzwa rinogona kugadzirwa uchishandisa spunbond uye tsono punched composite tekinoroji. Hupenyu hwayo hwesevhisi ndeye 5-10 nguva yakareba kupfuura yechinyakare asphalt yakanzwa; Sefa zvinhu zvakare ndeimwe yeanokurumidza kugadzira zvigadzirwa zvemachira asiri akarukwa, anogona kushandiswa gasi uye kusefa kwemvura mumaindasitiri akadai sekemikari yakaoma, mishonga, uye chikafu, uye ane mukana mukuru wemusika; Pamusoro pezvo, machira asiri akarukwa anogona kushandiswa mukugadzirwa kwematehwe ekugadzira, mikwende, machira embatya, machira ekushongedza, uye machira ekupukuta ekushandisa mumba.
Izvo chaizvo nekuda kwekuenderera mberi kwemicheka isina kurukwakuti zvinodiwa pakugadzirwa kwavo uye kushandiswa kwavo zvinoramba zvichiwedzera, zvakadai sekunyunguduka, kugadzirwa kwepamusoro-soro, zvigadzirwa zvitete, nezvimwewo. Naizvozvo, zvinodiwa pakugadzirisa kushanda kwepolypropylene resin, iyo huru yakasvibirira yemachira asina kugadzirwa, yakawedzerawo zvakafanana; Mukuwedzera, kugadzirwa kwepamusoro-speed spinning kana fine denier polypropylene fibers inodawo polypropylene resin kuti ive yakanaka melt flow performance; Mamwe ma pigment asingakwanisi kumira tembiricha yakakwira anoda polypropylene semutakuri ane tembiricha yakaderera. Zvose izvi zvinoda kushandiswa kwe-ultra-high melt index polypropylene resin sezvinhu zvakasvibirira zvinogona kugadziriswa pakudzika kwakadzika.
Iyo yakakosha zvinhu zvekunyungudutswa jira rinoputika polypropylene ine yakakwira melt index. Melt index inoreva huremu hwezvinhu zvakanyungudutswa zvinopfuura neyakajairwa capillary chubhu maminetsi gumi ega ega. Iyo yakakwirira kukosha, zviri nani kugadzirisa fluidity yezvinhu. Iyo yakanyanya kunyunguduka indekisi yepolypropylene, ndiko kukwenenzverwa kwemafayiti akapfapfaidzwa, uye zvirinani kusefa kwejira rakanyungudutswa rakagadzirwa.
Iyo nzira yekugadzirira yakakwira melt index polypropylene resin
Imwe ndeye kudzora huremu hwemamorekuru uye huremu hwekugovera kwepolypropylene nekudzora mapolymerization reaction process, sekudzikisa huremu hwepolymer nekuwedzera kuwanda kweiyo cationic agents senge hydrogen gasi, nekudaro kugadzirisa iyo melt index. Iyi nzira inogumira nezvinhu zvakaita se catalytic system uye maitiro ekuita, zvichiita kuti zviome kudzora kugadzikana kwe melt index uye kuishandisa.
Yanshan Petrochemical yave yakananga polymerizing yakanyungudutswa zvinhu zvakanyunguduka indekisi inopfuura zviuru vachishandisa metallocene catalysts mumakore mashoma apfuura. Nekuda kwekuoma kwekudzora kugadzikana, hombe-ye polymerization haina kuitwa. Kubva pakatanga denda gore rino, Yanshan Petrochemical yakatora iyo inodzoreka degradation polypropylene melt blown material production technology yakagadzirwa muna 2010 kuti ibudise polypropylene yakanyunguduka yakavhuvhuta isiri-yakarukwa jira rinokosha musi waKukadzi 12. Panguva imwecheteyo, bvunzo dzeindasitiri dzakaitwa pachigadzirwa ichi uchishandisa metallocene catalysts. Chigadzirwa chacho chakagadzirwa uye parizvino chiri kutumirwa kune vashandisi vepasi kuti vaedzwe.
Imwe nzira ndeyekudzora kuderedzwa kwepolypropylene inowanikwa kuburikidza neyakajairwa polymerization, kuderedza uremu hwayo hwemamorekuru, uye kuwedzera indekisi yayo yekunyungudika.
Munguva yakapfuura, nzira dzekudzikisa kupisa kwepamusoro dzaiwanzoshandiswa kuderedza uremu hwema molecular ye polypropylene, asi iyi nzira yekupisa yemagetsi yekupisa ine zvipingamupinyi zvakawanda, zvakadai sekurasikirwa kwekuwedzera uye kuora kwekushisa, uye maitiro asina kugadzikana. Mukuwedzera, kune nzira dzakadai se ultrasonic degradation, asi nzira idzi dzinowanzoda kuvapo kwezvinonyungudutsa, izvo zvinowedzera kuoma uye mari yekuita. Mumakore achangopfuura, nzira dzekuparara kwemakemikari epolypropylene zvishoma nezvishoma dzakashandiswa zvakanyanya.
Kugadzirwa kweHigh Melt Finger PP neChemical Degradation Method
Chemical degradation nzira inosanganisira kuita polypropylene nemakemikari ekuparadza maajenti senge organic peroxides mune screw extruder, zvichiita kuti molecular cheni yepolypropylene ipambuke uye kuderedza huremu hwayo. Kuenzaniswa nedzimwe nzira dzekushatisa, ine zvakanakira kushatisa kwakazara, yakanaka kunyungudika fluidity, yakapusa uye inogoneka gadziriro yekugadzirira, uye iri nyore kuita yakakura-yakakura kugadzirwa kwemaindasitiri. Iyi zvakare ndiyo nzira inonyanya kushandiswa nevagadziri vepurasitiki vakagadziridzwa.
Equipment zvinodiwa
Nzvimbo yakakwira yekunyungudika yakasiyana zvachose kubva kune yakajairwa PP yekushandura michina. Zvishandiso zvekupfapfaidza zvinhu zvakanyungudutswa zvinoda kureba chikamu, uye musoro wemuchina unofanirwa kumira kana kushandisa pasi pemvura granulation (Wuxi Huachen ine yakafanana yekucheka pasi pemvura); Izvo zvinhu zvakatetepa kwazvo uye zvinoda kusangana nemvura pakarepo mushure mekubuda mumusoro wemuchina kuti zvive nyore kutonhora;
Pakugadzirwa kwepolypropylene yakajairika, kumhanya kwekucheka kweiyo extruder ndeye 70 metres paminiti, nepo kune yakakwira kunyunguduka polypropylene, kumhanya kwekucheka kunodiwa kuve pamusoro pe120 metres paminiti. Pamusoro pezvo, nekuda kwekukurumidza kuyerera kweyakakwira melt polypropylene, kureba kwayo kwekutonhora kunoda kuwedzerwa kubva pamamita mana kusvika gumi nemaviri.
Muchina wekugadzira zvinhu zvakanyungudutswa zvinoda kuramba uchichinja mesh, kazhinji uchishandisa mbiri chiteshi mesh shanduko. Iyo mota inodiwa yemagetsi yakakwira zvakanyanya, uye akawanda shear blocks achashandiswa mukati meiyo screw zvikamu; Sekureva kwaKoyapan, iwo mapatya screw mutsetse wakagadzirwa nekunyungudutswa kwakapepereswa zvinhu zvakakosha une musiyano wakakura.
1. Iva nechokwadi chekudya kwakadzikama (PP, DCP, nezvimwewo);
2. Sarudza iyo yakakodzera chiyero chechikamu uye axial chinzvimbo chekuvhura kwakavakirwa pahafu yehupenyu hweiyo composite formula (yakashanduka kusvika kuchizvarwa chechitatu kuti ive nechokwadi chekuwedzera kutsetseka kweCR-PP reaction);
3. Kuona kuti munwe wakanyunguduka une goho rakakwirira mukati mehutano hwekushivirira (kupfuura 30 yakapedzwa mitsetse ine mari yakakwirira-inoshanda uye yakasanganiswa yakaenzaniswa negumi nemaviri chete);
4. Special drainage mold misoro inofanira kunge yakashongedzerwa. Kunyunguduka uye kupisa kunofanira kuva yunifomu, uye huwandu hwemarara hunofanira kuva huduku;
5. Zvinokurudzirwa kuve neyakakura inotonhora yekucheka granulator yekunyunguduka inoputika zvinhu (iyo ine mukurumbira wakanaka muindasitiri) kuve nechokwadi chemhando yezvikamu zvakapedzwa uye giredhi repamusoro;
6. Zvingave zviri nani kana pane online test mhinduro. Mukuwedzera, kuwedzerwa kwevatangi vekudzikinura kwemvura kudivi rekudya kunoda kurongeka kwepamusoro nekuda kwechikamu chidiki chekuwedzera. Zvemidziyo yekudyisa parutivi, senge inotengeswa kunze kwenyika Brabenda, Kubota, inogadzirwa mudzimba Matsunai, nezvimwe.
Izvo zvino shandiswa degradation catalysts
1: Dit-butyl peroxide, inozivikanwawo se di-tert-butyl peroxide, initiator a, vulcanizing agent dTBP, imvura isina ruvara kusvika kuyero zvishoma inoonekera isinganyungudike mumvura uye inosanganiswa neorganic solvents sebenzene, toluene, uye acetone. Yakasimba oxidizing, inopfuta, yakagadzikana pamhepo tembiricha, isinganzwe kukanganiswa.
2: Sulfurizer kaviri shanu, yakapfupikiswa seDBPH, zita remakemikari 2,5-dimethyl-2,5-bis (tert butylperoxy) hexane, molecular weight 290.44. Pale yero mvura ine hushamwari density ye0.8650 muchimiro cheruzha uye mukaka chena hupfu. Nzvimbo yechando i8 ℃. Kubikira poindi 50 ~ 52 ℃ (13Pa). Iyo refractive index inotangira pa1.418 kusvika 1.419. Iyo viscosity yemvura ndeye 6.5mPa. s. Flash point (kapu yakazaruka) 58 ℃. Inonyungudika mune zvakawanda organic zvinonyungudutsa zvakaita sedoro, ether, ketoni, esters, anonhuwirira hydrocarbons, nezvimwewo, isinganyunguriki mumvura.
3: Kuongororwa kweminwe yakasanganiswa
Muedzo wemunwe wakanyunguduka unofanirwa kuitwa maererano neGBIT 30923-2014 Polypropylene Melt Spray Special Materials; Zvakajairika melt zvigunwe zviridzwa hazvigone kuongororwa. Kunyungudika kwakanyanya kunoreva kushandisa nzira yevhoriyamu kwete nzira yehuwandu hwekuyedzwa.
Midziyo yemumba inosanganisira Chengde Youte, Guangxin Electronic Technology, Hangzhou Jinmai, Jilin Sainzi uye Dzidzo Instrument Factory, uye michina inotengeswa kunze kwenyika inosanganisira Zwick; Chengde Jinjian Testing Instrument Co., Ltd. inogadzira MFL-2322H melt flow flow meter yakanyatsogadzirirwa NVR kuyerwa kwe Ultra-yakakwirira kuyerera zvinhu zvinodiwa neGG. 309232014 Polypropylene Melt Spray Special Materials. Iyo yekuyedza mhando ndeye (500-2500) cm / 10min.
Parizvino, pane:
1. Shandong Daoen Polymer Materials Co., Ltd
2. Hunan Shengjin New Materials Co., Ltd
3. Jinfa Technology Co., Ltd
4. Beijing Yishitong New Materials Development Co., Ltd
5. Shanghai Huahe Composite Materials Co., Ltd
6. Hangzhou Chenda New Materials Co., Ltd
7. Basel, Dalin, South Korea
Nguva yekutumira: Kubvumbi-01-2024