NguAndy osuka kumzi-mveliso waseBaiyear
Ihlaziywe ngoNovemba 2, 2022
Nali iziko leendaba loshishino lokubumba inaliti ye-Baiyear.Okulandelayo, i-Baiyear iya kwahlula inkqubo yokubumba inaliti ibe ngamanqaku amaninzi ukwazisa uhlalutyo lwezinto ezikrwada zenkqubo yokubumba inaliti, kuba kukho umxholo omninzi kakhulu.Elilandelayo linqaku lesithathu.
(5).BS (K imathiriyeli)
1. Ukusebenza kweBS
I-BS yi-butadiene-styrene copolymer, enobunzima obuthile kunye nokuqina, ukuqina okuphantsi (okuthambileyo) kunye nokungafihli kakuhle.Ubunzima obuthile bezinto zeBS yi-1.01f\cm3 (efana namanzi).Izinto eziphathekayo zilula ukufaka umbala, zinokumanzi kakuhle, kwaye kulula ukubumba kunye nokusebenza.
2.Iimpawu zenkqubo yeBS
Uluhlu lobushushu bokusebenza lweBS luqhelekile kwi-190-225 °C, kwaye iqondo lobushushu lokungunda likhethwa ukuba libe yi-30-50 °C.Izinto eziphathekayo kufuneka zome ngaphambi kokuba zicutshungulwe, ngenxa yobumanzi obungcono, uxinzelelo lwenaliti kunye nesantya sokutofa sinokuba sezantsi.
(6).PMMA (Akriliki)
1. Ukusebenza kwe-PMMA
I-PMMA yipolymer e-amorphous, eyaziwa ngokuba yi-plexiglass.Ukungafihli okugqwesileyo, ukumelana nobushushu obulungileyo (ubushushu be-deformation ye-98 ° C), kunye nokumelana nempembelelo elungileyo.Iimveliso zayo zinamandla omatshini aphakathi, ubulukhuni obuphantsi komhlaba, kwaye zikrwelwa ngokulula ngezinto ezinzima kwaye zishiya umkhondo, ezifana ne-PS.Akulula ukuba ube brittle kwaye uqhekeke, kwaye ubunzima obuthile yi-1.18g/cm3.
I-PMMA ineempawu ezibalaseleyo ze-optical kunye neempawu zokumelana nemozulu.Ukungena kokukhanya okumhlophe kuphezulu ukuya kuma-92%.Iimveliso ze-PMMA zine-birefringence ephantsi kakhulu kwaye zifaneleke ngakumbi ukwenza iidiski zevidiyo.I-PMMA ineempawu zokukhwela ubushushu begumbi.Ukuqhekeka koxinzelelo kunokwenzeka ngokunyuka komthwalo kunye nexesha.
2. Iimpawu zenkqubo ye-PMMA
Iimfuno zokucubungula ze-PMMA zingqongqo, kwaye zivakalelwa kakhulu kumswakama kunye nobushushu.Kufuneka yomiswe ngokupheleleyo ngaphambi kokuba kuqhutywe (iimeko zokumisa ezicetyiswayo ziyi-90 ° C, iiyure ezingama-2 ~ 4).°C) kunye nokubumba phantsi koxinzelelo, iqondo lobushushu lokungunda likhethwa ukuba libe ngu-65-80 °C.
Ukuzinza kwe-PMMA akulungile kakhulu, kwaye kuya kuthotywa ngobushushu obuphezulu okanye ixesha elide lokuhlala kwiqondo lokushisa eliphezulu.Isantya se-screw akufanele sibe sikhulu kakhulu (malunga ne-60%), kwaye iindawo ezinzulu ze-PMMA zixhomekeke kwi "voids", ezifuna ukucutshungulwa ngokusebenzisa isango elikhulu, "iqondo lokushisa eliphantsi, ubushushu obuphezulu bokubumba, isantya esicothayo". indlela.
I-3.Uluhlu lwesicelo esiqhelekileyo: imboni yemoto (izixhobo zesignali, iipaneli zesixhobo, njl.), Imboni yamachiza (izikhongozeli zokugcinwa kwegazi, njl. njl.), izicelo zoshishino (iidiski zevidiyo, i-diffusers ukukhanya), iimpahla zabathengi (iindebe zokusela, izinto zokubhala, njl. ).
(7) I-PE (ipolyethylene)
1. Ukusebenza kwePE
I-PE yiplastiki enemveliso enkulu phakathi kweeplastiki.Ibonakala ngomgangatho othambileyo, ongeyotyhefu, ixabiso eliphantsi, ukusetyenzwa okufanelekileyo, ukuxhathisa okuhle kweekhemikhali, akukho lula ukugqwala, kwaye kunzima ukuyiprinta.I-PE yipolymer eqhelekileyo yekristale.
Ineentlobo ezininzi, ezisetyenziswa ngokuqhelekileyo yi-LDPE (i-polyethylene ephantsi) kunye ne-HDPE (i-polyethylene ephezulu yoxinaniso), eyiplastiki eguquguqukayo enamandla aphantsi kunye nobunzima obuthile be-0.94g / cm3 (incinci kunamanzi);Uxinaniso oluphantsi kakhulu lweereyini ze-LLDPE (Uxinzelelo lungaphantsi kwe-0.910g/cc, kwaye ubuninzi be-LLDPE kunye ne-LDPE buphakathi kwe-0.91-0.925).
I-LDPE ithambile, (eyaziwa ngokuba yirabha ethambileyo) I-HDPE yaziwa njengerabha eqinileyo ethambileyo.Inzima kune-LDPE kwaye yimathiriyeli ye-semi-crystalline.Ukuqhekeka koxinzelelo lwendalo kwenzeka.Uxinzelelo lwangaphakathi lunokwehliswa ngokusebenzisa izixhobo ezineempawu eziphantsi kakhulu zokuhamba, ngaloo ndlela zinciphisa into yokuqhekeka.Kulula ukunyibilika kwizinyibilikisi ze-hydrocarbon xa iqondo lobushushu lingaphezulu kwe-60 °C, kodwa ukuxhathisa kwayo ekunyibilikeni kungcono kunoko kwe-LDPE.
I-crystallinity ephezulu ye-HDPE ibangela ukuxinana kwayo okuphezulu, amandla okuqina, ubushushu obuphezulu beqondo lokushisa, i-viscosity kunye nokuzinza kweekhemikhali.Ukumelana nokungena okunamandla kune-LDPE.I-PE-HD inamandla empembelelo ephantsi.Iipropati zilawulwa ubukhulu becala ngobuninzi kunye nokusabalalisa ubunzima bemolekyuli.
I-HDPE ilungele ukubunjwa kwenaliti inokusabalalisa ubunzima bemolekyuli.Ubuninzi be-0.91 ~ 0.925g / cm3, siyibiza ngokuba luhlobo lokuqala lwe-PE-HD;ngenxa yobuninzi be-0.926 ~ 0.94g / cm3, kuthiwa luhlobo lwesibini lwe-HDPE;ngenxa yobuninzi be-0.94 ~ 0.965g / cm3, ibizwa ngokuba luhlobo lwesibini lwe-HDPE Luhlobo lwesithathu lwe-HDPE.
Iimpawu zokuhamba kwesi sixhobo zihle kakhulu, kunye ne-MFR phakathi kwe-0.1 kunye ne-28. Ukuphakama kwe-molecular weight, ihlwempu kakhulu iimpawu zokuhamba kwe-LDPE, kodwa bhetele amandla empembelelo.I-HDPE ithambekele ekuqhekekeni koxinzelelo lwendalo.Ukuqhekeka kunokuncitshiswa ngokusebenzisa izixhobo ezineepropati eziphantsi kakhulu zokuhamba ukunciphisa uxinzelelo lwangaphakathi.I-HDPE inyibilika ngokulula kwizinyibilikisi ze-hydrocarbon xa iqondo lobushushu liphezulu kune-60C, kodwa ukuxhathisa kwayo ekunyibilikeni kungcono kunoko kwe-LDPE.
I-LDPE yimathiriyeli ye-semi-crystalline ene-shrinkage ephezulu emva kokubunjwa, phakathi kwe-1.5% kunye ne-4%.
I-LLDPE (i-Linear Low Density Polyethylene) ine-tensile ephezulu, ukungena, impembelelo kunye neepropati zokumelana nokukrazula okwenza i-LLDPE ifanele iifilimu.Ukumelana kwayo okugqwesileyo kokuqhekeka koxinzelelo lokusingqongileyo, ukumelana nefuthe eliphantsi lobushushu kunye nokumelana ne-warpage kwenza i-LLDPE ibe nomtsalane kumbhobho, i-extrusion yamaphepha kunye nazo zonke izicelo zokubumba.Usetyenziso lwamva nje lwe-LLDPE lufana nesigcina-kufuma seendawo zokulahla inkunkuma kunye nezaleko zamachibi enkunkuma.
2. Iimpawu zenkqubo ye-PE
Eyona nto iphawuleka kakhulu yamacandelo e-PE kukuba isantya sokuncipha kokubumba sikhulu, esithambekele ekuncipheni kunye nokuguqulwa.Izinto ze-PE zinokufunxa amanzi aphantsi, ngoko ke akufuneki ukuba zomiswe.I-PE inoluhlu olubanzi lweqondo lokushisa kwaye akulula ukubola (iqondo lokushisa lokubola liyi-320 ° C).Ukuba uxinzelelo lukhulu, ubuninzi becala buya kuba buphakamileyo kwaye izinga lokunciphisa liya kuba lincinci.
I-fluidity ye-PE iphakathi, iimeko zokucubungula kufuneka zilawulwe ngokungqongqo, kwaye ubushushu bokubumba bufanele bugcinwe (40-60 ℃).Iqondo le-crystallization ye-PE lihambelana neemeko zenkqubo yokubumba.Inobushushu obuphezulu bokukhenkceza kunye nobushushu obuphantsi bokungunda, kwaye ikristale isezantsi.Ngethuba lenkqubo ye-crystallization, ngenxa ye-anisotropy ye-shrinkage, uxinzelelo lwangaphakathi lugxininiswe, kwaye iinxalenye ze-PE zixhomekeke kwi-deformation kunye nokuqhekeka.
Imveliso ifakwe kwindawo yokuhlambela amanzi emanzini atshisayo kwi-80 ° C, enokuthi ikhulule uxinzelelo kwinqanaba elithile.Ngexesha lenkqubo yokubumba, ubushushu bezinto eziphathekayo kunye nobushushu bokubumba kufuneka bube phezulu, kwaye uxinzelelo lwenaliti kufuneka lube phantsi phantsi kwesiseko sokuqinisekisa umgangatho wamacandelo.Ukupholisa isikhunta sifuneka ngokukodwa ukuba sikhawuleze kwaye sifane, kwaye imveliso iya kutshisa xa i-demoulding.
Ukomisa nge-HDPE: ukomisa akufuneki ukuba kugcinwe kakuhle.Ubushushu obunyibilikayo 220 ~ 260C.Kwiimathiriyeli ezineemolekyuli ezinkulu, ubushushu obucetyiswayo bokunyibilika buphakathi kwe-200 kunye ne-250C.
Ubushushu bomngundo: 50~95C.Amalungu eplastiki anobunzima bodonga obungaphantsi kwe-6mm kufuneka asebenzise ubushushu obuphezulu bokungunda, kwaye iindawo zeplastiki ezinobunzima bodonga obungaphezulu kwe-6mm kufuneka zisebenzise ubushushu obuphantsi bokungunda.Ukushisa okupholisa kwenxalenye yeplastiki kufuneka kube yinto efanayo ukunciphisa umehluko ekunciphiseni.Ngelona xesha lilungileyo lomjikelo womatshini, i-diameter yeshaneli yokupholisa kufuneka ingabi ngaphantsi kwe-8mm kwaye umgama ukusuka kwindawo yokubumba kufuneka ube ngaphakathi kwe-1.3d (apho "d" i-diameter yomjelo wokupholisa).
Uxinzelelo lokutofa: 700 ~ 1050bar.Isantya sokutofa: Isitofu sesantya esiphezulu siyacetyiswa.Iimbaleki kunye namasango: Ububanzi bembaleki buphakathi kwe-4 kunye ne-7.5mm, kwaye ubude bembaleki kufuneka bube bufutshane kangangoko.Iindidi ezahlukeneyo zamasango zingasetyenziswa, kwaye ubude besango akufanele budlule i-0.75mm.Ngokukodwa kufanelekile ukusetyenziswa kwesikhunta somgijimi oshushu.
Ipropathi "ethambileyo-eyolulwayo" ye-LLDPE yinto engalunganga kwinkqubo yefilimu evuthelweyo, kwaye iqamu lefilimu elivuthelweyo le-LLDPE alizinzanga njengaleyo ye-LDPE.Isithuba sokufa kufuneka sandiswe ukuze kuthintelwe ukucuthwa kokuphuma ngenxa yoxinzelelo oluphezulu lwasemva kunye nokwaphuka okunyibilika.Imilinganiselo ye-gap jikelele yokufa ye-LDPE kunye ne-LLDPE yi-0.024-0.040 ngaphakathi kunye ne-0.060-0.10 ngokulandelelana.
3. Uluhlu oluqhelekileyo lwesicelo:
I-LLDPE ingene kwiimarike zemveli ze-polyethylene, kubandakanya ifilimu, ukubumba, umbhobho, kunye nocingo kunye nentambo.Isigcina-kufuma esichasene nokuvuza yimarike esanda kuphuhliswa yeLLDPE.I-Mulch, iphepha elikhulu elikhutshiweyo elisetyenziswa njengendawo yokulahla inkunkuma kunye neelitha zamadama enkunkuma ukunqanda ukuntywila okanye ukungcoliseka kweendawo ezingqongileyo.
Imizekelo ibandakanya ukuveliswa kweengxowa, iingxowa zenkunkuma, ukupakishwa kwe-elastic, ii-industrial liners, ii-towel liners kunye neengxowa zokuthenga, zonke ezithatha ithuba lokuphucula amandla kunye nokuqina kwe-resin.Iifilimu ezicacileyo, ezifana neengxowa zesonka, zilawulwa yi-LDPE ngenxa yenkungu engcono.
Nangona kunjalo, imidibaniso ye-LLDPE kunye ne-LDPE iyakuphucula amandla.Ukumelana nokungena kunye nokuqina kweefilimu ze-LDPE ngaphandle kokuchaphazela kakhulu ukucaca kwefilimu.
Uluhlu lwesicelo se-HDPE: izikhongozeli zefriji, izitya zokugcina, izixhobo zasekhitshini zasekhaya, izigqubuthelo zokutywina, njl.
Ukuqhubeka, ukuba ufuna ukwazi ngakumbi, nceda uzive ukhululekile ukuqhagamshelana nathi.I-Baiyear ngumzi-mveliso omkhulu oqukayo odibanisa ukwenziwa komngundo weplastiki, ukubumba inaliti kunye nokusetyenzwa kwentsimbi.Okanye unokuqhubeka nokunikela ingqalelo kwiziko leendaba lewebhusayithi yethu esemthethweni: www.baidasy.com, siya kuqhubeka nokuhlaziya iindaba zolwazi ezinxulumene neshishini lokulungisa inaliti.
Qhagamshelana:Andy Yang
What's app : +86 13968705428
Email: Andy@baidasy.com
Ixesha lokuposa: Nov-29-2022
