Plastic pallets parizvino inonyanya kugadzirwa neHDPE, uye akasiyana mamakisi eHDPE ane akasiyana zvivakwa. Iwo akasiyana maitiro eHDPE ndiwo musanganiswa wakakodzera wezvina zvakakosha zvinosiyana: density, molecular weight, molecular weight distribution uye additives. Yakasiyana catalysts inoshandiswa kugadzira yakasarudzika yakasarudzika mapolymers. Izvi zvakasiyana-siyana zvinosanganiswa kugadzira HDPE mamakisi ezvinangwa zvakasiyana, kuwana chiyero mukuita.
Muchigadzirwa chaicho uye kugadziriswa kwepurasitiki pallets, kunaka kwezvipembenene zvikuru izvi zvine simba kune mumwe nemumwe. Isu tinoziva kuti ethylene ndiyo yakanyanya mbishi zvinhu zve polyethylene, uye mashoma mamwe macomonomers, senge 1-butene, 1-hexene kana 1-octene, anowanzoshandiswa kuvandudza mapolymer properties. ZveHDPE, zvirimo zvevashoma pamusoro pemamonomers kazhinji hazvipfuure 1% -2%. Kuwedzerwa kwemacomonomers zvishoma kunoderedza crystallinity yepolymer. Shanduko iyi inowanzoyerwa nedensity, uye density inoenderana nemutsetse kune crystallinity.
Muchokwadi, kusimba kwakasiyana kweHDPE kunoburitsa misiyano yakakura mukuita kwemapurasitiki epallet akagadzirwa. The density yepakati-density polyethylene (MDPE) kubva 0.926 kusvika 0.940g/CC. Mamwe mapoka dzimwe nguva anoisa MDPE seHDPE kana LLDPE. Homopolymers vane yakanyanya density, kuomarara, yakanaka kusapinda uye yakanyanya kunyungudika.
Kazhinji mukugadzira mapepa epurasitiki, zvimwe zvinowedzera zvinowanzodiwa kuti zvive nechokwadi chekushanda kunodiwa. Kushandiswa kwakasiyana kunoda akakosha ekuwedzera maumbirwo, akadai sekuwedzera kwema antioxidants kudzivirira kuparara kwepolymer panguva yekugadziriswa uye kudzivirira oxidation yechigadzirwa chakapedzwa panguva yekushandiswa. Antistatic additives anoshandiswa mune akawanda ekurongedza mamakisi kudzikisa kunamatira kweguruva uye tsvina kumabhodhoro kana kurongedza.
Mukuwedzera, kuitira kuti uve nechokwadi chemhando yepurasitiki pallets, kunyanya kukoshesa kunofanira kubhadharwa pakuputira uye kuchengetedza zvinhu zvakasvibirira. Kazhinji kana uchichengeta zvinhu zveHDPE, zvinodikanwa kuti ive kure nenzvimbo dzemoto, insulated, uye imba yekuchengetera inofanirwa kuchengetwa yakaoma uye yakatsvinda. Izvo zvinorambidzwa zvachose kusanganisa chero tsvina, uye inorambidzwa zvachose kuratidzwa kune zuva nemvura. Mukuwedzera, panguva yekufambisa, inofanira kuchengetwa mungoro yakachena, yakaoma uye yakavharwa kana kabhini, uye hapana zvinhu zvakapinza zvakadai sezvipikiri zvinofanira kubvumirwa.
Nguva yekutumira: Jul-04-2025
