Mafilimu owonjezera owonjezera kutentha ndi amodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri popangira ulimi wowonjezera kutentha, ndipo ntchito zake zatsiku ndi tsiku zimayambira pamiyala yamiyala yapansi, malo obiriwira adzuwa, malo otsetsereka a mbali ziwiri, nyumba zobiriwira zamitundu yambiri, komanso malo obiriwira obiriwira. Ndiye alimi alimi, makamaka alimi atsopano, angasankhe bwanji filimu yotenthetsera kutentha pamene akugwira ntchito zaulimi, lero ndikuwuzani mwachidule ndikugawana nawo.
Gawo lachitukuko cha filimu ya wowonjezera kutentha Pakali pano, mapangidwe a filimu yowonjezera kutentha ayenera kupangidwa kuti akhale ndi magulu ambiri osanjikiza, ndipo ntchitoyo imakhala yotentha kwambiri, kuteteza kutentha kwakukulu, mphamvu zambiri, moyo wautali ndi nthawi yopitirira. nthawi yolimbana ndi chifunga, nthawi yoteteza fumbi, ndi ntchito zina. Integrated chitukuko. Kukula kwa filimu ya wowonjezera kutentha kwadutsa magawo anayi molingana ndi zida zosiyanasiyana zopangira: yoyamba ndi filimu ya polyethylene (PE) wowonjezera kutentha; yachiwiri ndi polyvinyl chloride (PVC) wowonjezera kutentha filimu; chachitatu ndi ethylene-vinyl acetate copolymer (EVA) wowonjezera kutentha filimu; chachinayi ndi filimu ya PO, ndi filimu yachisanu ya m'badwo wachisanu-wosanjikiza pamodzi yomwe ikupangidwa.
Zina zazikulu ndi kusiyana kwa mafilimu osiyanasiyana owonjezera kutentha:
1. PVC (polyvinyl chloride) wowonjezera kutentha filimu. Kanema wamtunduwu amakhala ndi kuwala kwabwino, filimu yatsopanoyi imakhala ndi kuwala kopitilira 85%, kusungika bwino kwa chinyezi, kutsika kwamafuta, kulimba kwamphamvu, komanso kukana kwa mphepo. Kukhazikika kwamankhwala abwino, kukana kwa asidi ndi alkali. Choyipa chake ndikuti filimuyo ili ndi gawo lalikulu, komanso kugwiritsa ntchito malo omwewowowonjezera kutentha ndi 1/3 kuposa polyethylene, zomwe zimabweretsa kuwonjezeka kwa mtengo; kachiwiri, zimakhala zovuta komanso zowonongeka pa kutentha kochepa, ndipo zimakhala zosavuta kufewetsa ndi kumasuka pa kutentha kwakukulu; pambuyo zoonjezera ndi mpweya, filimu pamwamba Kutolere fumbi, kuwala transmittance zambiri osauka pambuyo mwezi umodzi ntchito. Kanema wotsalirayo amawononga nthaka ndipo sangathe kuwotchedwa. Chifukwa cha kuipitsidwa kwa chilengedwe komwe kumachitika chifukwa cha kutulutsa kwa chlorine, kagwiritsidwe ntchito kake kakuchepa pang'onopang'ono.
2. PE wowonjezera kutentha filimu.PE wowonjezera kutentha filimundiwopepuka, wofewa, wosavuta kuumba, wabwino kufala, wopanda poizoni, woyenera mafilimu osiyanasiyana owonjezera kutentha ndi mafilimu a mulching, ndipo pakadali pano ndiye filimu yayikulu yaulimi m'dziko langa. Malinga ndi zosowa za alimi, mitundu yosiyanasiyana yazinthu monga PE anti-aging (kupewa kamodzi), PE anti-aging dripping (kupewa kawiri), PE anti-aging dripping anti-fogging (tatu anti-fogging) ikhoza kupangidwa, ndi zabwino zoletsa kukalamba komanso kudontha koletsa chifunga kugonana. Zoyipa zake ndi izi: kusagwira bwino kwa nyengo, kusasunga bwino kutentha, ndizovuta kulumikiza. Manager Song adaphunzira kuti filimu ya PE grouting imagwiritsidwa ntchito kwambiri pamsika.
3. Filimu ya grouting imakonzedwanso pamaziko a filimu yoyambirira ya polyethylene, ndipo mkati mwa filimu yaulimi imathandizidwa ndi zokutira, kotero kuti filimu yopangidwa ndi mankhwala imakhala ndi antifogging yogwira ntchito yomwe imangiriridwa mwamphamvu. Pakhoma lamkati la filimu yokhetsedwa, mankhwala osokoneza bongo amapangidwa mkati mwa filimu yokhetsedwa. Chinyontho chikangokhudza khoma lamkati la filimu yokhetsedwa, filimu yamadzi imapangidwa, ndiyeno imatsikira m'mphepete mwa okhetsedwa chifukwa cha mphamvu yake yokoka, kuti ikwaniritse zotsatira zake. chifunga ndi kudontha. Kusiyana kofunikira ndi filimu yapitayi wowonjezera kutentha ndi kuti wothandizira alipo popanda wowonjezera kutentha filimu, kotero nthawi ya anti-fogging ndi kudontha ntchito zimadalira kwathunthu kulamulira kwa ❖ kuyanika ndondomeko, khalidwe la ❖ kuyanika wothandizila ndi ntchito filimu yaulimi. Nthawi ya moyo imatha kupitilira chaka chimodzi.
Kumene,filimu ya groutingalinso ndi zolakwika pawokha. Choyamba, anti-fog dripping agent imamangiriridwa pamwamba pa filimu yaulimi, kotero kuti kumamatira kwake sikuli kolimba kwambiri. Mphamvu zakunja ndizosavuta kuwononga zokutira, kuti zikhale zosavuta kuyambitsa kudontha pamalo owonongeka. Mwachitsanzo, pamene kukhetsa, kukangana pakati pa khoma lamkati la shedi ndi mitengo yansungwi pa shedi, zomwe tatchulazi zidzachitika pamene mbewu zapamwamba zikumana ndi filimu yaulimi. Panthawi imodzimodziyo, sikophweka kugwiritsa ntchito filimu ya grout kwa mbewu zomwe zimakonda kutentha kwambiri ndi chinyezi, monga nkhaka, mphodza zowawa, vwende ndi zina zotero. Komabe, zophophonyazo sizibisa chowonadi. Ngakhale zili pamwambazi zitachitika, zotsatira za filimu yaulimi zikuwonekerabe kuposa filimu yachikhalidwe yaulimi. Chifukwa mankhwalawa ali ndi ubwino wodziwikiratu pochotsa chifunga ndi kudontha, ndipo mtengo wake ndi wochepa kwambiri, ndi pafupifupi 1.1-1.2 yuan pa mita imodzi. Poyerekeza ndi mtengo wa filimu ya EVA, mtengo wolowetsamo ndi wotsika, choncho umakondedwa ndi alimi ambiri a masamba. Kanema wamakono wa grouting amasiyana ndi mtundu wazinthu chifukwa chamitundu yosiyanasiyana yodzaza. Alimi amasamba amayenera kuyang'ana kangapo pa chinthu chilichonse akamagula ndikusankha kampani yokhazikika yoti agule.
4. Kanema wa EVA.EVA wowonjezera kutentha filimundi mtundu wa wowonjezera kutentha pulasitiki filimu kuti panopa ntchito ambiri. Kanema wamtunduwu ali ndi ma transmittance apamwamba kwambiri, okhala ndi kuwala kopitilira 92%; ili ndi zida zabwino zothana ndi chifunga, ndipo nthawi yodontha ndi 4- Kupitilira miyezi 6; imateteza kwambiri kutentha, kukana fumbi komanso kukana kukalamba kwambiri (kupitilira miyezi 18). Mafilimu atatu osanjikiza a EVA angagwiritsidwe ntchito kwambiri popanga masamba otsika kwambiri azachuma, monga nkhaka, phwetekere, tsabola, mphonda wowawa, etc. Choyipa chake ndikuti mtengo wake ndi wokwera kwambiri. Malinga ndi makulidwe osiyanasiyana, mtengo wamsika wapano ndi: 0.08 mm nthawi zambiri ndi 2.05-2.1 yuan/square mita, ndipo 0.09 mm ndi 2.15-2.2 yuan/square mita.
5. Kanema wa PO ndi mtundu watsopano wa kanema wopangidwa m'zaka zaposachedwa. Kanema wamtunduwu ndi filimu yaulimi ya polyolefin yapamwamba kwambiri yopangidwa kuchokera ku polyolefin. Imakhala ndi transmittance yopepuka, anti-fogging mosalekeza, kudontha komanso kuteteza kutentha. Ndi zina zotero, ili pamalo otsogola pakati pa mafilimu owonjezera kutentha, okhala ndi mtengo wokwera mtengo, ndipo ndi filimu yodalirika kwambiri. Kukhuthala kwa filimu yapo pano kumachokera ku 8 filaments, 12 filaments, ndi 15 filaments.
