Suko ndi katswiri wopanga makina osungunula a PP ndi ogulitsa ndipo tathetsa mavuto ambiri opangira makina kwa makasitomala athu.Tidafotokozera mwachidule zovuta zosiyanasiyana zomwe zingachitike pakuyatsa makina osungunuka, ndikugawana nawo ndi anzathu onse ogwira nawo ntchito.
Ndi kufalikira kwaCOVID 19m'dziko lapansi, monga chinthu chofunikira kwambiri cha masks oteteza kumaso - thensalu yosungunuka, wakhala protagonist wa msika wa mliri wa COVID-19.
Kusungunula kumapangidwa kupyolera mu mpweya wotentha wothamanga kwambiri kuti utambasule mofulumira ndi kulimbitsa kusungunuka kwa polima komwe kwangotulutsidwa kumene kuti apange njira yozungulira.Ubwino wake ndikuti kuyenda kwa njira kumakhala kochepa, ndipo nsalu yopanda nsalu imatha kupangidwa mwachindunji ndi kupota.Choyipa ndichakuti zida zimafunikira kutumizidwa.
Suko ndi katswiriPP makina osungunula osungunukakupanga ndi ogulitsa ndipo tathetsa mavuto ambiri opangira makina kwa makasitomala athu.
Tinafotokozera mwachidule zovuta zosiyanasiyana zomwe zingachitike panthawi yotumiza makina, ndikugawana nawo ndi abwenzi onse ogwira nawo ntchito.
Chiyambi chachidulemwa Mwowombedwa Machine
The polima kusungunula extruder ndi wononga extruder ndi kupopera ndi mkulu-liwiro ndi mkulu-kutentha mpweya kuti mtsinje wosungunula anatambasulidwa kwambiri kuti apange ultra-fine ulusi.Ulusi wabwino kwambiriwu umafupikitsidwa pa chogudubuza kuti apange nsalu yosefera yosalukidwa.
Kuyenda kwa njira: kudyetsa ufa wa polima → kusungunula kutulutsa → kupangika kwa ulusi → kuziziritsa kwa ulusi → zomatira zomata → zomangira zopindika → nsalu zosefera zosalukidwa.
Masitepe a MwowombedwaMachineCkusiya
1. Khazikitsani kutentha kwakukulu ndi kuthamanga kwa mphepo kuti makina osungunuka asungunuke apope nsalu yofewa.
2. Kenaka sungani bwino kutentha kwa kufa ndi mpweya wotentha mpaka nsaluyo ikhale yovuta.
3. Lembani kutentha kwa kufa ndi kutentha kwa dera lililonse la screw.
4. Konzani bwino mphamvu ya mphepo, kuthamanga kwa screw ndi kusungunula kuchuluka kwa extrusion kuti nsalu ikhale yofewa kachiwiri.
5. Sinthani liwiro lakuthamanga kuti kulemera kwa nsalu kufikire muyezo.
6. Onjezani ma electrets awiri molingana ndi liwiro la osonkhanitsa nsalu.Nthawi zambiri, electret ndi 5-7 cm kutali ndi nsalu, ndipo voteji yosasunthika ndi 40kv-60kv.Ngati liwiro la osonkhanitsa nsalu likuchedwa, ingowonjezerani static electret.
Zokonda Zoyambira Zoyambira
1. Kutentha kwa screw: kuyika 190 ℃ m'chigawo choyamba, 200 ℃ m'chigawo chachiwiri, 210 ℃ m'chigawo chachitatu, ndi zina zotero.
2. Kufa mutu kutentha: 250 ℃ (nthawi zambiri 240-255 ℃).
3. Kutentha phukusi kutentha: mkati kutentha 300 ℃, kubwereketsa otentha mpweya kutentha 270 ℃.
4. Quick CHIKWANGWANI ukonde kusintha, metering mpope, kufa mutu fyuluta: 240 ℃.
5. Kuthamanga kwa mpweya wotentha: 0.2-0.4MPa.General mkulu-kusungunuka PP zakuthupi, kuthamanga kwa mpweya kumatha kukhazikitsidwa pa 0.2-0.3MPa.Kuthamanga kwa mpweya kwa zinthu zozungulira 1300 kungakhale kokwera kwambiri.Khazikitsani kuthamanga kwa mpweya molingana ndi makina osiyanasiyana osungunula ndi mitu yakufa.
6. Nsalu zosungunuka zimasonkhanitsa mtunda: 15-25 cm, makamaka ndi 15-20 cm.
7. Kukula kwa mpweya wotuluka kumakhala kofanana ndi mtunda wochokera ku nsonga ya spinneret kupita ku ndege, 1-2mm.
8. Liwiro la screw ndi laling'ono kapena laling'ono (kuthamanga kwa mphepo pang'ono, voliyumu yaying'ono ya extrusion, kuthamanga kwakukulu kwa mphepo, mphamvu yaikulu ya extrusion).
Kusamalira kwapadera
1. Ngati nsalu yosungunuka ikadali yofewa pansi pa kutentha kwakukulu, mavuto angaphatikizepo: a.vuto la sensor ya kutentha;b.vuto lowongolera kutentha.Ngati mavuto awiriwa achotsedwa, mukhoza kuwonjezera kutentha mpaka nsalu yofewa yosungunuka imatuluka.Dziwani kuti kutentha kwambiri kumayambitsa zochitika za crystallization.
2. Zida zazikulu zosungunula zimagwiritsa ntchito zinthu zosungunula zomwe zimasungunuka pafupifupi 1500, ndipo zida zazing'ono zimatha kugwiritsa ntchito zinthu zosungunula kuzungulira 1300.
3. Ngati kutentha kwa kufa kumayikidwa pafupifupi 210-230 ℃, ndipo kuthamanga kwa mphepo kuli pansi pa 0.2Mpa, makinawo adzakhala ndi chodabwitsa cha zinthu zowuluka, zomwe zingakhale zachilendo muzinthu zotsatirazi: a.vuto la sensor ya kutentha;b.vuto la kuthamanga kwa mpweya;c.kukula ndi ngodya ya chotulutsira mpweya ndi zachilendo.
4. Ngati nsalu yosungunuka ikadali yofewa kapena imayamba kuphulika ikawonjezeredwa kutentha kwambiri, nsaluyo imayamba kufewetsa pambuyo powonjezera kutentha kwa processing.Zifukwa zambiri ndizovuta zamakina osungunuka.Ndibwino kuti mulumikizane ndi wopanga zida.Inde, m'pofunikanso kulamulira ngati pali mavuto aakulu khalidwe ndi zipangizo.
5. Kuwonjezera kwa electret master batch popanga nthawi zambiri kumafuna kusintha koyenera kwa ndondomeko kuti zigwirizane nazo.Pogwiritsa ntchito magulu osiyanasiyana a electret master, makonzedwe a parameter a makina omwewo amasungunula amasiyana.Mutha kutchula njira yosinthira pamwambapa kuti musinthe nsalu yosungunula kuti ikhale yabwino kwambiri, ndikufanizira ndikuyesa magwiridwe antchito.
6. Kuchuluka kwa electret master batch, kumapangitsanso mphamvu ya electrostatic.Koma atafika 6%, zotsatira zake zidakwera kwambiri.Kuwonjezeka kwa chiŵerengero chowonjezera, kumapangitsanso kwambiri zotsatira pa nsalu yomalizidwa yosungunuka yopanda nsalu.
Chidziwitso chactrostatic attenuation
- Pambuyo posungunula nsalu yosungunuka ndi electret, onse awiri a electret master batch ndi zinthu za PP akhoza kuimbidwa ndi magetsi osasunthika.Magetsi osasunthika pagulu la electret master ndi kuwonjezera pang'ono kumatha kukulitsa kusefera kosasunthika pafupifupi 10-20%, kuwola kumachedwa kwambiri pansi pa ma CD ndi kusungirako.
2. Kuchepa kwa kusefera pafupipafupi kumachitika chifukwa cha kuchepa kwa electret kwa static electret ndi kuchuluka kwa melt blown pp.
3. Nsalu zina zosungunula zimakhala zofewa koma kulimba kwake sikukwanira.Pamene nthawi yosungira ikuwonjezeka, nsaluzo zimakhala zowonongeka.Ndipo ndizosavuta kuyambitsa kuchepa kwa kusefera.Nsalu zosungunulazi nthawi zambiri zimapangidwa pansi pa kutentha kwapamwamba kwambiri komanso kutentha kwa mpweya.
4. Kusakhazikika kwa kusefera kungasinthidwe potsatira njira izi.Choyamba, popanda kuwonjezera electret master batch ndi chithandizo cha electret, pangani nsalu yosungunula yokhala ndi kusefera kwapamwamba kwambiri.Pazifukwa izi, palibe chithandizo cha electret chomwe chingawonjezedwe, ingowonjezerani electret master batch kuyesa kusiyana kwa kusefera.Chifukwa gulu labwino la electret master limatha kupanga magetsi osasunthika panthawi yokhotakhota popanda mankhwala a electret, omwe amatha kusintha kusefera kwa nsalu yosungunuka.
5. Kusefedwa kwakuthupi kwa nsalu yosungunuka ndi maziko, ndipo electret master batch ndi kiyi kuti kusefa kosasunthika kukwaniritsidwe.
6. Makina osiyanasiyana osungunula amatha kupanga nsalu zosiyanasiyana zosungunula, makamaka khalidwe lakufa.Makina ena osungunula amatha kukwaniritsa kusefa kwa 85%.Ngati mukufuna kufikira 90% kapena kupitilira apo, muyenera zida zapamwamba za PP.
Kusintha njira yosungunula-kuphulikansalukukhala wofooka komanso wovuta
1. Kuchokera pamakina osungunuka, makamaka amayamba ndi zifukwa zotsatirazi: a.kupota kosiyana, b.kutayika kwa kutentha kosakwanira komwe kumachitika chifukwa cha kuchuluka kwa mpweya woipa wobwerera, komanso kupsinjika kwamkati kumayambitsa brittleness.Kuchulukitsa kuchuluka kwa mpweya wa fani yoziziritsa, kusintha kuchuluka kwa kusungunuka kwa extruder, ndikusintha kutentha kwa mpweya wotentha kumatha kusintha vutoli.
2. Kuchokera kuzinthu za PP, gwiritsani ntchito mafuta otsika osungunuka a PP angapangitse kuti spinner ikhale yowonjezereka.Pambuyo pozizira ndi crystallization kwathunthu, zidzapangitsa kuti nsalu yosungunuka ikhale yolimba komanso yolimba.Zokonda zimaperekedwa ku zipangizo zosungunuka ndi ndondomeko yosungunuka ya 1500. Mafilanti ndi ochepa, ofewa komanso amagawidwa mofanana, ndipo zotsatira zake zimakhala zofewa.
3. Ngati woyambitsa njira ya peroxide popanga zinthu zosungunuka sizikuyendetsedwa bwino, nsaluyo imakhala yovuta komanso yovuta.Ngati PP zakuthupi ndi kutentha kwa processing ndizokwera kwambiri, zimatenthedwa mkati mwa wononga ndikuwonongeka kwambiri.Popanga zinthu, njira ya peroxide imayenera kumaliza kuphulika kwa ma molekyulu isanatulutsidwe wononga, kuteteza zotsalira zachiwiri kuti zisalowe mu screw ya nsalu zosalukidwa kuti zipitilize kuyankha.Izi zimafuna kuphatikiza kwabwino kwa maphikidwe owongolera ndi zida zowononga.
4. Palibe chowotcha mpweya wobwerera kuti utolere ndi chogudubuza.Pambuyo popiringa, kutentha kwa nsalu yosungunuka kumakhala kwakukulu ndipo kutentha sikungatheke mwamsanga.Pambuyo kuziziritsa, imakhala yonyezimira.
5. Kwa makina ang'onoang'ono osungunuka, vuto la brittleness ndi stiffness likhoza kuthetsedwa mwa kusankha pawiri formula PP zopangira.
Momwe mungasinthire kulimba kwakusungunuka nsalu
1. Chepetsani mtunda wolandira nsalu yosungunuka ndikusintha bwino mpweya wotentha kapena kutentha moyenera.Ngati kutentha kozungulira kuli kwakukulu, mutha kuwonjezera kuyamwa kwapansi.
2. Chepetsani liwiro la extrusion ndikuchepetsa zotulutsa.
3. Wonjezerani ulusi wa ulusi ndikuchepetsa kutentha kozungulira.
4. Adopt PP zinthu za pawiri formula.
Zomwe zili pamwambazi ndi chidule cha zochitika za wogwira ntchito.Zoonadi, mavuto ndi njira zosinthira makina osungunuka ndi ochulukirapo kuposa omwe ali pamwambapa.Ngati muli ndi mafunso pamakina ndi zida, mutha kulumikizana nafe [imelo yotetezedwa]
Nthawi yotumiza: May-17-2020