Kwanan nan, kayan masarufi sun sami kulawa da yawa, kuma ma'aikatan mu na polymer ba su da cikas a cikin wannan yaƙin da ake yi da cutar. A yau za mu gabatar da yadda ake samar da kayan PP mai narkewa.
Bukatar kasuwa don babban abin narkewa PP
Narkar da kwararar ruwa na polypropylene yana da alaƙa da alaƙa da nauyin kwayoyin sa. Matsakaicin nauyin ƙwayar ƙwayar ƙwayar cuta ta resin polypropylene kasuwanci wanda aka shirya ta al'adar Ziegler Natta catalytic tsarin shine gabaɗaya tsakanin 3 × 105 da 7 × 105. Ma'aunin narkewa na waɗannan resin polypropylene na al'ada gabaɗaya ƙasa ce, wanda ke iyakance kewayon aikace-aikacen su.
Tare da saurin haɓaka masana'antar fiber sinadarai da masana'antar injuna, masana'antar masana'anta da ba a saka ba ta tashi cikin sauri. Jerin fa'idodin polypropylene sun sa ya zama kayan da aka fi so don yadudduka da ba a saka ba. Tare da ci gaban al'umma, filayen aikace-aikace na yadudduka da ba a saka ba suna da yawa: a fagen kiwon lafiya da lafiya,ba saƙa yaduddukaana iya amfani da su wajen kera rigunan keɓewa, abin rufe fuska, rigunan tiyata, rigunan tsaftar mata, diapers ɗin jarirai, da sauransu; A matsayin kayan gini da kayan aikin geotechnical, ana iya amfani da yadudduka marasa saƙa don hana ruwa rufin, gina titina, da ayyukan kiyaye ruwa, ko kuma ana iya samar da jigon rufin da aka ci gaba ta amfani da fasaha mai haɗawa da allura. Rayuwar sabis ɗin sa ya fi sau 5-10 fiye da kwalta ta gargajiya; Kayan tacewa kuma suna ɗaya daga cikin samfuran da aka fi saurin haɓakawa a cikin yadudduka waɗanda ba saƙa, waɗanda za a iya amfani da su don iskar gas da tace ruwa a masana'antu kamar sinadarai, magunguna, da abinci, kuma suna da babbar kasuwa; Bugu da ƙari, za a iya amfani da yadudduka waɗanda ba saƙa ba don kera fata na roba, jakunkuna, rigunan tufafi, yadudduka na ado, da goge goge a rayuwar yau da kullun da amfanin gida.
Saboda ci gaba da ci gaba na masana'anta da ba a saka ba, abubuwan da ake buƙata don samarwa da aikace-aikacen su suna karuwa akai-akai, kamar narke busa, samar da sauri, da samfurori na bakin ciki. Sabili da haka, abubuwan da ake buƙata don aikin sarrafawa na resin polypropylene, babban albarkatun ƙasa don yadudduka maras saka, suma sun karu daidai; Bugu da kari, samar da high-gudun kadi ko lafiya denier polypropylene zaruruwa kuma na bukatar polypropylene guduro don samun mai kyau narke kwarara Properties; Wasu pigments waɗanda ba za su iya jure yanayin zafi ba suna buƙatar sarrafa polypropylene azaman mai ɗaukar hoto a ƙananan yanayin zafi. Duk waɗannan suna buƙatar amfani da resin polypropylene ultra-high melt index azaman albarkatun ƙasa waɗanda za'a iya sarrafa su a ƙananan yanayin zafi.
Abu na musamman don yadudduka na narkewa shine babban ma'aunin narkewar polypropylene. Fihirisar narke tana nufin adadin narkakkar kayan da ke wucewa ta daidaitaccen ma'aunin mace mai mutuwa kowane minti 10. Girman ƙimar, mafi kyawun sarrafa ruwa na kayan. Mafi girman ma'anar narkewar polypropylene, mafi kyawun zaruruwan zazzaɓi, kuma mafi kyawun aikin tacewa na masana'anta na narke busa.
Hanyar shirya babban narke index polypropylene guduro
Ɗaya shine don sarrafa nauyin kwayoyin halitta da kuma rarraba nauyin kwayoyin halitta na polypropylene ta hanyar sarrafa tsarin amsawar polymerization, kamar yin amfani da hanyoyin da za a kara yawan masu hanawa kamar hydrogen don rage nauyin kwayoyin halitta na polymer, ta haka ne ƙara yawan narke index. Wannan hanya ta iyakance ta dalilai kamar tsarin catalytic da yanayin amsawa, yana sa ya zama da wahala a sarrafa kwanciyar hankali na narkewar narkewa da aiwatarwa.
Yanshan Petrochemical yana amfani da abubuwan kara kuzari na ƙarfe don yin polymerization kai tsaye na narke kayan da aka hura tare da ma'aunin narkewa sama da 1000 a cikin ƴan shekarun da suka gabata. Saboda wahalar sarrafa kwanciyar hankali, ba a aiwatar da polymerization mai girma ba. Tun bayan barkewar cutar a wannan shekara, Yanshan Petrochemical ya karɓi fasahar samar da kayan aikin da za a iya sarrafawa ta hanyar lalata polypropylene da aka haɓaka a cikin 2010 don samar da polypropylene narkar da masana'anta na musamman a ranar 12 ga Fabrairu. A lokaci guda kuma, an gudanar da gwaje-gwajen masana'antu akan na'urar ta hanyar amfani da matakan ƙarfe na ƙarfe. An samar da samfurin kuma a halin yanzu ana aikawa zuwa masu amfani da ke ƙasa don gwaji.
Wata hanya ita ce don sarrafa lalatawar polypropylene da aka samu ta hanyar polymerization na al'ada, rage nauyin kwayoyin halitta da kuma ƙara alamar narkewa.
A da, ana amfani da hanyoyin lalata yanayin zafi sosai don rage nauyin kwayoyin halitta na polypropylene, amma wannan hanya mai zafi mai zafi yana da lahani da yawa, kamar asarar abubuwan da ke daɗaɗɗa, bazuwar zafin jiki, da matakai marasa ƙarfi. Bugu da ƙari, akwai hanyoyi irin su lalatawar ultrasonic, amma waɗannan hanyoyin sau da yawa suna buƙatar kasancewar abubuwan kaushi, wanda ke ƙara wahala da tsadar tsari. A cikin 'yan shekarun nan, an yi amfani da hanyar lalatawar sinadarai na polypropylene a hankali.
Samar da babban ma'aunin narkewar PP ta hanyar lalata sinadarai
Hanyar lalata sinadarai ta ƙunshi mayar da martani ga polypropylene tare da abubuwan lalata sinadarai irin su Organic peroxides a cikin screw extruder, haifar da sarƙoƙin ƙwayoyin cuta na polypropylene don karye da rage nauyin kwayoyin su. Idan aka kwatanta da sauran hanyoyin lalata, yana da fa'idodi na cikakkiyar lalacewa, ingantaccen narkewa mai narkewa, da tsari mai sauƙi kuma mai yuwuwa, yana mai sauƙin aiwatar da manyan masana'antu na masana'antu. Wannan kuma ita ce hanyar da aka fi amfani da ita ta hanyar gyare-gyaren masana'antun filastik.
Bukatun kayan aiki
Babban wurin narkewa yana nufin kayan aiki wanda ya bambanta da na yau da kullun na kayan gyaran PP. Kayan aikin da ake amfani da su don fesa narkakkar kayan na buƙatar tsawon al'amari mai tsayi da kan inji a tsaye, ko kuma yana amfani da granulation na ƙarƙashin ruwa (Wuxi Huachen yana da irin wannan yankan ruwa); Kayan yana da bakin ciki sosai kuma yana buƙatar shiga cikin ruwa nan da nan bayan ya fito daga kan na'ura don sauƙi mai sanyaya;
Samar da polypropylene na al'ada yana buƙatar saurin yankan extruder na mita 70 a cikin minti daya, yayin da babban ma'aunin narkewar polypropylene yana buƙatar saurin yanke sama da mita 120 a cikin minti ɗaya. Bugu da ƙari, saboda saurin kwararar ƙimar babban ma'aunin narkewar polypropylene, nisan sanyaya kuma yana buƙatar haɓaka daga mita 4 zuwa mita 12.
Injin don kera kayan busa narke yana buƙatar ci gaba da canza raga, yawanci ana amfani da mai sauya ragar tasha biyu. Abubuwan da ake buƙata na wutar lantarki ya fi girma, kuma ana amfani da ƙarin shingen shinge a cikin abubuwan da aka haɗa;
1: Tabbatar da ingantaccen ciyar da kayan kamar PP da DCP;
2: Ƙayyade ma'auni mai dacewa da matsayi na axial na budewa bisa ga rabin rayuwa na ma'auni mai mahimmanci (wanda ya samo asali zuwa ƙarni na uku don tabbatar da extrusion na CR-PP mai santsi);
3： Don tabbatar da yawan amfanin ƙasa na yatsu mai narkewa a cikin kewayon haƙuri (fiye da 30 da aka gama tube suna da ƙimar farashi mafi girma da tushen haɗawa idan aka kwatanta da dozin dozin kawai);
4: Dole ne a samar da kawuna na musamman na ƙarƙashin ruwa. Ya kamata a rarraba narkewa da zafi daidai, kuma adadin sharar gida ya zama kadan;
5： Ana ba da shawarar samar da babban granulator mai sanyi don kayan narkewa (wanda ke da kyakkyawan suna a cikin masana'antar) don tabbatar da ingancin granules da aka gama da ƙimar yawan amfanin ƙasa;
6: Idan akwai bayanan gano kan layi, zai fi kyau ma.
Bugu da ƙari, mai ƙaddamar da lalata da aka ƙara zuwa ciyarwar gefe tare da ruwa yana buƙatar daidaito mafi girma saboda ƙaramin adadin kari. Don kayan abinci na gefe irin su Brabenda da aka shigo da su, Kubota, da Matsunaga da aka kera a gida.
A halin yanzu ana amfani da ƙazamin ƙasƙanci
1: Di-t-butyl peroxide, wanda kuma aka sani da di tert butyl peroxide, mafarin a kuma vulcanizing wakili dTBP, ruwa ne mara launi zuwa ɗan rawaya mai haske wanda ba ya narkewa a cikin ruwa kuma ba shi da ƙarfi tare da kaushi na halitta kamar benzene, toluene, da acetone. Yana da iskar oxygen sosai, mai ƙonewa, ingantacciyar kwanciyar hankali a yanayin zafin ɗaki, rashin jin daɗin tasiri.
2: DBPH, an rage shi azaman 2,5-dimethyl-2,5-bis (tert butylperoxy) hexane, yana da nauyin kwayoyin halitta na 290.44. Ruwan rawaya mai haske, manna kamar da farin foda, tare da ƙarancin dangi na 0.8650. Wurin daskarewa 8 ℃. Wurin tafasa: 50-52 ℃ (13Pa). Ƙididdigar ƙira 1.418 ~ 1.419. Dankowar ruwa shine 6.5mPa. s. Filashi (bude kofin) 58 ℃. Mai narkewa a cikin mafi yawan kaushi na halitta kamar su alcohols, ethers, ketones, esters, da hydrocarbons masu kamshi, maras narkewa a cikin ruwa.
3: Gwajin narkewar yatsa
Ana buƙatar gwajin narkewar yatsa daidai da GB/T 30923-2014 Polypropylene Melt Spray Materials na Musamman; Ba za a iya gwada narke narke na yau da kullun ba. Babban mahimmancin narkewa yana nufin amfani da hanyar ƙarar maimakon hanyar taro don gwaji.
Dongguan Liansheng Non saka Technology Co., Ltd.an kafa shi a watan Mayu 2020. Babban kamfani ne wanda ba sa saka masana'anta wanda ke haɗa bincike da haɓakawa, samarwa, da tallace-tallace. Yana iya samar da launuka daban-daban na PP spunbond yadudduka maras saka tare da faɗin kasa da mita 3.2 daga gram 9 zuwa 300.
Lokacin aikawa: Nuwamba-08-2024