application

PE kuvhuvhuta kuumba firimu kugadzirwa

Hopper feeding - zvinhu plasticizing extrusion - kuvhuvhuta traction - mhepo mhete kutonhora - herring splint - traction roller traction - corona kurapwa - firimu mhepo, asi zvakakosha kuti titaure kuti kuita kwefirimu rinoputika kune hukama hukuru nemaitiro ekugadzira maparamita, saka. , mukuridza firimu, inofanirwa kusimbisa kutonga kwemaitiro paramita, yakamisikidzwa mashandiro ekuita, kuve nechokwadi chekugadzirwa kwakanaka, Uye kuwana zvemhando yepamusoro zvigadzirwa zvemufirimu.

Kugadziriswa uye zvikamu zvikuru zvefirimu rekurima

Firimu rekurima rakagadzirwa nepamusoro polima semuviri mukuru, richiwedzera huwandu hwakakodzera hwezvinowedzera zvinoshanda, mushure mekuputika kwekugadzira.Chinhu chakanakira firimu rakadeurwa ndeye polyolefin, senge polyethylene (PE), polyvinyl chloride (PVC), ethylene - vinyl acetate copolymer (EVA) uye mamwe thermoplastics.

Thermoplastics haina nzvimbo yekunyunguduka senge yakaderera mamorekuru makomisheni, asi inonyunguduka pane imwe tembiricha yenguva, mukati mayo ari viscoelastic.Uchishandisa pfuma iyi, inogona kupiswa mumhepo inonyunguduka yakafanana neshuga yegum, kuvhuvhuta bubble, kutonhora, kuporesa, kuumba, kukwevera kuti uwane humwe hukuru hwefirimu yakadururwa.

Kurongwa kwefirimu rekurima

1, kuchembera kuramba firimu (hupenyu hurefu hwakadururwa firimu).Wedzera zviuru zvishoma zvechiedza chakanakisa stabilizer kune chikuru mbishi zvinhu.Yakadururwa firimu munzvimbo yeokisijeni nechiedza (kunyanya ultraviolet) irradiation, pachava nekuchinja kwakasiyana-siyana, sekushanduka kwemavara, kuputika kwepamusoro, kuparara kwemagetsi.Hupenyu hwesevhisi hweakajairwa polyolefin akadururwa firimu ndeye 4 kusvika kumwedzi mishanu chete, nepo yakajairika yechando kugadzirwa kwekurima kunoda hupenyu hweakadururwa firimu iri mwedzi 9 kusvika gumi.Hupenyu hwesevhisi hunoenderera mberi hwematunhu ega ega kana mhando dzezvirimwa zvinoda kuti firimu rakadeurwa rive anopfuura makore maviri, uye hupenyu hwemaruva akadururwa firimu uye ginseng shed firimu anopfuura makore matatu.Icho chiri pamusoro apa chinangwa chinogona kuwanikwa nekuwedzera zvishoma zvishoma zviuru zveakanakisa kudzikamisa mwenje kugadzirira hupenyu hurefu hwakadeurwa firimu.

2, hapana kudonha firimu.Imwe firimu yakadururwa umo mamwe ma surfactants anowedzerwa kune iyo huru zvinhu kuitira kuti mukati meiyo firimu irege kuoneka (kana isingawanzo kuoneka kweimwe nguva yenguva) condensation madonhwe panguva yekuputira kushandiswa.Munguva yechando inotonhora, kutonhora mukati me greenhouse kwakakwirira kudarika kunze, uye hunyoro hwakakura, iyo greenhouse yakafanana nefirimu yakawedzerwa kapu yemvura inopisa.Mvura yemvura iri nyore kusvika kune dova mushure mekusangana nefirimu, kuumba madonhwe emvura mukati memufirimu.Kudonhedza kwemvura kwakafanana nelens, kana chiedza chinobva kunze chichienda kune yakadururwa, pamusoro pemvura ichaita kuti chiedza chigadziriswe chiitiko, chiedza hachigoni kupinda mushedhi, chichideredza zvikuru chiedza chekufambisa kwefirimu yakadururwa, kwete inobatsira. kune photosynthesis yezvirimwa.Kana chiedza chikatariswa kuburikidza ne “lenzi” chikarova chirimwa, chinopisa chirimwa chacho nekuchikuvadza.Madonhwe makuru emvura pambesa anogona kukonzera kuti zviore.Mushure mekuwedzera mamwe ma surfactants, pamusoro peiyo dhiri-isina firimu inoshandurwa kuita hydrophobic kuita hydrophilic, uye madonhwe emvura achakurumidza kuumba firimu remvura rakajeka pamwe nemukati meiyo yakatenuka yakadururwa firimu, uye kufambisa kwechiedza kwefirimu hakusi. vakanganiswa.

3, hapana kudonhedza, mhute yekubvisa basa rakadurura firimu.Fluoride uye silicon antifogging agents yakawedzerwa pahwaro hwedhiri-isina firimu.Nguva yechando solar greenhouse uchishandisa zvakajairika firimu kavha, kazhinji kuburitsa inorema mhute, greenhouse chiedza kusimba kunoderedzwa, kukanganisa kukura kwezvirimwa, asiwo nyore kukonzera chirwere.Pahwaro hwefirimu isina kudonhedza, wedzera fluorine uye silicon fogging agent, kuitira kuti mhute yemvura iri mu susaturated state yeshedhi inogona kukurumidza kunyura pamusoro peiyo firimu rakadeurwa, uye pasi pechiito chekudonha-isina. mumiririri, madonhwe emvura pamwe chete pamusoro peiyo greenhouse firimu anokurumidza kubatsira kupararira uye kuyerera kusvika pasi, iyi ndiyo inodonhedza yakasununguka, fogging basa rekudururwa firimu.

4, light shed film (light conversion film).Iyo optical conversion agent inowedzerwa kune main raw material.Mumakore achangopfuura, maererano nemusimboti wechiedza ecology, tekinoroji yekushandura simba rezuva rinoshandiswa kune firimu rekurima, ndiko kuti, mwenje wekushandura mwenje unowedzerwa kune yakadururwa firimu, simba rezuva muchirimwa photosynthesis idiki kwazvo kuita mutsvuku. mwenje weorenji unoenderana nekukura kwekudyara, kuvandudza photosynthesis yezvirimwa mufirimu rakadururwa repurasitiki, kuvandudza mwero wekushandiswa kwesimba rechiedza chepurasitiki greenhouse, kuitira kuvandudza kunaka kwezvirimwa.Zvakadai sekuvandudza kutapira kwemichero, kukura kwekutanga, kuwedzera kugadzirwa, kuwedzera mari, kushongedza ruvara rwemaruva nemiti.

5, yakakwirira insulation firimu.Uchishandisa yakakwirira inooneka mwenje transmittance, infrared inovharira mhedzisiro yeyakakwira polymer uye wedzera infrared absorbent, yakagadzirwa nepamusoro tembiricha insulation firimu.High insulation film inogona kutora kupisa kunopenya zvakanyanya sezvinobvira mukati mezuva uye kuderedza kupisa kunopenya zvakanyanya sezvinobvira usiku.Pakati pezuva, chiedza chezuva chinonyanya kupenya mufirimu ine chiedza chinooneka chewavelength ye 0.3 ~ 0.8 micron, iyo inowedzera tembiricha mugreenhouse uye inotora kupisa kwakawanda muvhu.Husiku, kune mutsauko wekushisa pakati pemukati nekunze, uye ivhu rinopisa kupisa nenzira yechiedza che infrared ine wavelength ye7-10 microns.Naizvozvo, nekushandisa yakakwira polymer ine yakakwirira transmittance yechiedza chinooneka uye yakanaka infrared blocking effect, uye nekuwedzera infrared absorbent, vanhu vakagadzira tembiricha yekuchengeta firimu.Parizvino, kufambira mberi kukuru kwakaitwa mukushandiswa kwezvinhu zvenano-insulation pane membrane.

6, multifunctional membrane.Zvinoenderana neyakagadzika nzira yekugadzira, kune imwechete layer firimu uye multilayer co-extrusion composite firimu, iyo yekupedzisira firimu rinoshanda.Semuenzaniso, 0.1mm firimu inogona kuumbwa ne3 layers, kukosha kwayo ndiko, nekuwedzera zvinonzwisisika uye zvehupfumi zvinowedzera mune imwe neimwe layer, ipa firimu rakadeurwa rinodiwa akawanda mabasa.Semuenzaniso, wedzera mamwe madonhwe uye fogging agents muchikamu chepakati, uye wedzera imwe mwenje stabilizer mune yekunze layer.

7, firimu remavara.Inogadzirwa maererano nenheyo ye optics.Pasi pechifukidziro chemufirimu mutsvuku, mbeu dzekotoni dzakakura zvakanaka, tsinde dzakanga dzakakora, midzi yakagadziridzwa uye chiyero chekupona chakanga chakakwirira.Kudyara makarotsi uye makabheji ane yero yekurima firimu kunogona kukurumidza kukura kwavo, uye kuvhara gaka kunogona kuwedzera goho neinodarika 50%.Kushandisa firimu rekurima repepuru rinogona kuwedzera zvakanyanya goho rema eggplant, leek nepineapple;Mastrawberries ari pasi pemucheka webhuruu anobereka michero yakakura uye yakawanda.Zvakanakira firimu reruvara mukusimudzira kugadzirwa kwezvirimwa, kuwedzera goho uye kuvandudza kunaka kuri kuratidza tarisiro yakakura yekushandisa.

8. Degradation membrane.Yakagadzirirwa "kusvibiswa kuchena" kunokonzerwa nefirimu rekurima remarara.Iyo firimu yakasara yefirimu yakasvibiswa inogona kuzvisvibisa munguva pfupi pasi pesimba remamiriro akasiyana-siyana echisikigo.Mafirimu ekudzikisira anogona kukamurwa kuita mafomu matatu: fotodegradation, biodegradation uye photobiodegradation.Iyo e starch firimu uye uswa fiber firimu iro riri kuvandudzwa munyika yedu nderokusvibisa mafirimu.Samples akagadzirwa uye akaiswa mudiki batch kugadzirwa.