Vatengi vazhinji kuburikidza newebhusaiti yedu kune zano rerunhare pamusoro pekuzivikanwa kwemhando dzebhegi dzakarukwa, zvino nhasi DongLai yakarukwa bhegi Xiaobian kutsanangura mukurumbira wemhando dzebhegi dzakarukwa.
Mhando dzemabhegi akarukwa
Mabhegi akarukwa anonziwo mabhegi enyoka. Imhando yepurasitiki, inonyanya kushandiswa kurongedza. Iyo mbishi zvinhu kazhinji ndeye polyethylene, polypropylene uye mamwe makemikari epurasitiki mambishi. Heino sumo pfupi yemhando yebhegi rakarukwa uye kushandiswa.
Polyethylene ndiyo huru mbishi yekugadzirwa kwekunze, polypropylene ndicho chigadzirwa chikuru chemumba. Iyo thermoplastic resin yakagadzirwa ne polymerization ye ethylene. Muindasitiri, inosanganisirawo copolymers ethylene ine shoma shoma α-olefin. Polyethylene haina kunhuhwirira, haina chepfu, waxy, ine yakanakisa yakaderera tembiricha kuramba (minimum kushanda tembiricha kusvika -70 ~ -100 ℃), yakanaka kemikari kugadzikana, yakawanda asidhi uye alkali ngura kuramba (asidhi kuramba, oxidation), isinganyunguriki mune zvakawanda zvinonyungudutsa pakamuri tembiricha, kuderera kwemvura kunyura, kuita kwakanakisa kwemagetsi ekudzivirira; Zvisinei, polyethylene inonyatsonzwa kudzvinyirirwa kwezvakatipoteredza (kemikari uye mashizha emagetsi) uye ine hutsika hunopesana nekupisa kukwegura. Zvinhu zve polyethylene zvinosiyana kubva kune zvakasiyana-siyana kusvika kune zvakasiyana-siyana, kunyanya zvichienderana nekugadzirwa kwema molecular uye density. Nzira dzakasiyana dzekugadzira dzinogona kubereka zvakasiyana densities (0.91-0.96g / cm3). Polyethylene inogona kugadzirwa nenzira imwechete iyo yakajairwa thermoplastic mapurasitiki anoumbwa (ona Plastic processing). Inoshandiswa zvakanyanya mukugadzirwa kwefirimu, midziyo, mapaipi, waya imwe chete, waya uye tambo, zvinodiwa zvezuva nezuva, nezvimwewo. Inogona kushandiswa seyakakwirira frequency insulation zvinhu zveTV, radar, nezvimwewo. Nekuvandudzwa kweindasitiri yepetrochemical, kugadzirwa kwepolyethylene kwakakura nekukurumidza, kuverengera nezve 1/4 yehuwandu hwekugadzirwa kwepurasitiki. Muna 1983, huwandu hwepasi rose hwekugadzira polyethylene hwaive 24.65 metric tons, uye chirimwa chiri kuvakwa chaive nehukuru hwe3.16 metric tons.
Polypropylene (PP)
Iyo thermoplastic resin yakagadzirwa nepolymerization yepropylene. Kune marudzi matatu ezvirongwa, zvinoti, zvizere isotopic, atactic uye isina kunanga. Zvigadzirwa zveindasitiri zvinonyanya kuumbwa neisotopic zvimiro. Polypropylene inosanganisirawo copolymer yepropylene uye shoma shoma ye ethylene. Kazhinji inoshanduka, isina ruvara yakasimba, isina kunhuwa uye isina chepfu. Nekuda kwemitemo yayo yechimiro, yakakwira crystallinity, inonyungudika inosvika 167 ℃, kupisa kupisa. Iine density ye 0.90g/cm3, ndiyo yakareruka kuita zvakasiyana-siyana purasitiki. Corrosion resistance, tensile simba 30MPa, simba, rigidity uye pachena zviri nani pane polyethylene. Iyo yakashata ndeye yakaderera tembiricha inokanganisa kuramba haina kunaka, iri nyore kuchembera, asi inogona kugadziridzwa uye kuwedzera antioxidant kukunda.
Ruvara rwebhegi rakarukwa chena kana chena-chena kazhinji, isiri-chepfu uye haina kuravira, kukuvadza kumuviri wemunhu kunowanzo kudiki. Kunyange zvazvo yakagadzirwa nemhando dzakasiyana-siyana dzemakemikari epurasitiki, asi kuchengetedzwa kwakasimba kwezvakatipoteredza, simba rekudzokororazve;
Bhegi rakarukwa rinoshandiswa zvakanyanya, rinonyanya kushandiswa kurongedza zvinhu zvakasiyana siyana, uye rinoshandiswa zvakanyanya muindasitiri;
Plastic yakarukwa bhegi ine polypropylene resin sechinhu chikuru mbishi, extrusion uye kutambanudza kuita shinda yakatsetseka, uye yozorukwa mubhegi.
Composite epurasitiki rakarukwa bhegi nepurasitiki rakarukwa jira sehwaro zvinhu, kuburikidza kuyerera kuumba.
Inoshandiswa kurongedza hupfu kana granular yakasimba zvinhu uye zvinyorwa zvinochinjika. Composite yepurasitiki yakarukwa bhegi yakakamurwa kuita maviri mubhegi rimwe uye matatu mubhegi rimwe zvinoenderana nehukuru hwezvinhu.
Zvinoenderana nenzira yekusona, inogona kukamurwa kuita bhegi rezasi rekusona, bhegi rezasi rekusona, bhegi rekuisa uye bhegi rakavharwa neglue.
Zvichienderana nehupamhi hunobudirira hwebhegi, inogona kukamurwa kuva 450, 500, 550, 600, 650 uye 700 mm. Madiro akakosha achabvumiranwa nemapato ese.
Pamusoro pekufarirwa kwediki make up kune ese marudzi ekupedzisa kweakarukwa ane chekuita nekubvunzana, kuburikidza nekugovana zvirimo, kusvika pakuzivikanwa kwemhando dzebhegi dzakarukwa dzine humwe ruzivo, kana iwe uchida kupinda zvakadzika mubhegi reruzivo rwemusika, unogona kubata mutengesi mukambani yedu, kana kumabvazuva uye bhegi rakarukwa pane-iyo-nzvimbo kuferefeta, kutaurirana kwepepa uku kunokurukurwa.
Nguva yekutumira: Jan-15-2021