LDPE iyakaderera-density polyethylene, iyo inogadzirwa ne polymerization ye ethylene monomer catalyzed nemahara radical initiator uye haina chero imwe copolymer.Hunhu hwayo hwemamorekuru hwakanyanya dhigirii rebazi, ine huwandu hukuru hwematavi macheni akareba, nekuda kwekubatanidzwa kwecheni dzemamorekuru, kuitira kuti kuoma kwayo kuve kwakashata, hakugone kuve kwakakura chikamu chekutambanudza, kuderera kwesimba kugona.
Panguva imwecheteyo, nekuda kwedhigirii yayo yepamusoro yebazi, ine yakakwira kunyungudika simba, iyo inoita basa rakakura mukudzikamisa membrane bubble.Nekuda kwekusunungurwa kwemorekuru mukuita kwekugera, ine hunhu hwakajeka hwekugera, uye iyo melt viscosity yakaderedzwa zvakanyanya pakuveura kukuru, iyo inounza yakanaka extrusion process performance, inoratidzwa seyakaderera kunyunguduka kunyungudika, kuderera kunyunguduka tembiricha uye mota mutoro. .
Nekuda kwehunhu huri pamusoro, LDPE inogona kushandiswa zvakachinjika mukugadzira dhizaini kuti iwane kuita kwaunoda.Pane kunyanya zvinotevera zvinhu:
1. Kuvandudza machining performance
Nekuwedzera kwemusika zvinodiwa pakurongedza, kushandiswa kwemetallocene kunowedzera uye kwakakura, kunyangwe kuita kwemetallocene kwakanaka kwazvo, asi kugadzirisa kunowanzo mbabvu dzayo dzakapfava, kazhinji mune extrusion process kuburitsa yakawandisa shear kupisa, kumanikidza. inowedzera, kutonhora kunokwira, membrane bubble haina kugadzikana.Izvi zvinogona kuvandudzwa nekubatanidza LDPE, chiyero chekuwedzera chinogona kuva 15-30%, kana chiyero chekuwedzera chakanyanyisa, chichakanganisa zvakananga maitiro ekupedzisira emufirimu, iyo inoda kuenzaniswa.
2. Kuvandudza optical performance
Mamwe mafirimu ane zvimwe zvinodiwa zve optical properties.Linear kana metallocene LLDPE ine general optical zvimiro, kunyanya nekuti kukura kwayo kwekiristaro kwemukati kwakakurisa.Kana 5-15% LDPE yakawedzerwa kwairi, ichabatsira kuderedza mukati mekristaro saizi, kuitira kuvandudza mhute uye pachena.
3. Kuvandudza kushanda kwechisimbiso chekupisa
Iyo yekupisa yekuisa chisimbiso kuita kwemutsara kana metallocene LLDPE iri nani zvakanyanya pane iyo yeLDPE.Nekudaro, nekuda kwechimiro chepamusoro chebranched degree uye yakakwira melt viscosity pane yakaderera shear, LDPE inogona kudzivirira kupisa kwekuvhara kuremara kunokonzerwa nekunyanyisa extrusion yekushisa kuvhara firimu panguva yekupisa chisimbiso.Panguva imwecheteyo, huwandu hwakakodzera hweLDPE hunogona kuvandudza simba rekubatanidza kupisa, asi huwandu hahufanire kunge hwakawandisa.Kana zvisina kudaro, ichaita kuti chisimbiso chekupisa chiwedzere.
4. Kumwe kuvandudzwa kwebasa
Semuenzaniso, mufirimu ye shrinkage yekuvandudza shrinkage yekupisa uye shrinkage rate;Chiitiko chemavara etiger chinogona kuvandudzwa nemhepo inomonereka firimu.Kuvandudza chiitiko chemitsipa mufirimu yekukanda;Mune greenhouse firimu kuvandudza kugadzikana kwe membrane bubble kuti iwane yakakura chiyero membrane kugadzirwa, zvichingodaro.
Zvinogona kuoneka kuti LDPE inotora basa rinokosha mukugadzira dhizaini yemafirimu matete nekuda kwechimiro chayo chemolecular chimiro, uye zvine musoro kusanganiswa nezvimwe zvinhu zvepolymer zvinogona kuwana optimization yekugadzira uye kuvandudzwa kwekuita.
Nguva yekutumira: Aug-15-2022