Menene banbanci tsakanin dabbobi da petg?

So, polycondensate, ana amfani dashi da farko a cikin farfaffukan kayan abinci da zaruruwa na rubutu, a tsakanin sauran aikace-aikace. Yanzu ana amfani dashi azaman kayan marufi, ba kawai cikin kwalabe ba, har ma a cikin kwalaben amorsphous, itetallius dabbobi (cystalline dabbobi da farantin. A cikin shekaru biyar da suka gabata, injiniyan-sa-cofetters, kamar yadda sabbin samfuran polymer, an yi amfani da su a cikin injiniyoyi masu ɗorewa, bi da bi.
Nasarar dabbobi a cikin kayan aikin soda na soda saboda nuna bambanci, ikon daidaitawa, ƙimar tattalin arziki, da haɓakar fasahar sarrafawa mai sauri. Abubuwan da ke ciki na dabbobi suna da nauyi, wartsproof, sake zama, kuma suna da kyau airthiess. Cloul mai cike da kwalban ruwa na biyu shine mafi girman haske fiye da irin kwalban gilashin; Kwalban talifi yana nauyin 1/10 na gilashin gilashin iri ɗaya. Wannan yana adana aiki, kuzari, da kuma farashi a cikin duk hanyoyin da aka masana'anta zuwa masu amfani.
Sunadarai da kaddarorin

Pet don kwalaben abinci na abinci ana samarwa daga ƙwayar ƙwayar ƙwayar cuta (TPA) da aka samu ta hanyar hadawan abu? Terephthaly acidi an tsarkake ko kuma ya yi shi tare da methanol don ƙirƙirar Dimesthyl Terephththater (DMT), ko ƙara haɓakar oxifized tsarkakakken tsabta (pta). Wani asalin albarkatun kasa na dabbobi shine Ethane, wanda ya canza zuwa Ethylene glycol (misali) ta hanyar dauki. PET COASKIYA NE A CIKIN SAUKI NA DMT (ko PTA) da misali tsari na moltencization don samun manyan lu'ulu'u da kuma ingantaccen nauyi. Tsarin-kasa-jihar shima yana sa abun ciki ethanol na polymer isasshe low.

Babban ciniki na gaba daya resin narke a kusan 480f (), amma melting m dabbar da aka yi kusan 520f ().

Ormed crystallized dabbobi yana da kyakkyawan ƙarfi. Tausaka da kuma nuna gaskiya, kuma yana da tsayayya ga rauni acid, tushe da yawa.

Grades na musamman

Bude molding mold sa dabbar dabbobi iya samar da ingantaccen launi, kore da haske mai launin shuɗi. Mai launin ruwan sanyi a cikin reactor bai buƙatar haɗa shi da illa mai illa ga kaddarorin jiki ba, da kuma inganta daidaituwa ta jiki. Hanyoyin resins na abubuwan haɗin gwiwa daban-daban suna samuwa. Petholyan Petsmers sun yi kuka a hankali, wanda ke ba su damar samar da kwalabe mai inganci na Soda mai inganci akan yanayin sarrafa kayan aiki. Har ila yau, wani mummunan rauni mai ƙarfi shine kuma ana samun shi. Wannan kayan ya hada da fa'idodi na karfin nama da rage nauyi, kuma ana iya sarrafa shi a sauƙaƙe a kan kayan aikin da suka dace. Dostsingungiyoyi daban-daban, harshen wuta da sauran polymers na musamman ana iya gabatar dasu koyaushe ko an gyara su sadu da sabbin aikace-aikace.

Mcopolyester wani misali ne na yawan cofolyesters. Ba kamar PCC ta yi ba, wanda aka inganta shi da acid, Petg ne mai polymer mai diddice wanda aka sanya shi ta hanyar haɗuwa da ChDM Diol tare da TPA (Aceremthalmal acid) da Ethylene glycol. Petg Copolymers za a iya molded ko yalwa kuma yawanci zama amorphous, a bayyane kuma kusan launi, koda a cikin manyan sassan.

Yana da babban madaurin, taurin kai da kuma wahala mai kyau, ko da a ƙananan yanayin zafi. Haɗin nuna gaskiya, tauri da narke ƙarfi sa yana da amfani ga allurar gyada, busa ƙayyadaddun abubuwa, bututu, fina-finai da zanen gado. Ana samun feg a cikin tsari wanda ba a daidaita shi ba ko kuma tare da ƙari, gami da jami'an saki, masaniyar Masterbatch, da kuma tasiri, da kuma tasiri kan masu gyara.

Ya kamata a bushe a 120-160f na kusan 4-6 hours kafin gyara ko kuma cirewa. A cikin hanyoyin duka, narkewar lokacinta yana fitowa daga 420f zuwa 510f. Lokacin rike kayan aiki a cikin yanayin zafi ya kamata ya zama gajeru yadda zai yiwu don hana lalacewar kima. Ya kamata a aikata shi a cikin injin allurar rigakafi, buƙatar kowane harbi ya zama 50% zuwa 80% na ƙarfin sa.

Ana iya fitar da mold kuma busa mold yanayin zafi tsakanin 400-450f don yin kwarotu mai gamsarwa ga shamfu, kayan wanka na ruwa, man shafawa na minkuna. Wannan kayan ya cika ka'idoji na FDA don hulɗa da abinci.

Lissafi na iya samar da kewayon bayanan martaba, kazalika da coppaging shambura, fina-finai, da zanen gado, gami da kayan aikin na'urar. Petg da PCTA za a iya haifuwa da ethylene oxide da y haskoki.

A lokacin da aka yi amfani da shi don yin allurar rigakafi, yawanci ana sarrafa petg a cikin yawan narkewar zafin jiki na 450-510f, tare da zazzabi na mold na kimanin 70-130f. Aikace-aikace na yanzu sun haɗa da murfin kayan aiki, garkuwar kayan kwalliya, kwantena na kwaskwarima, pointers na Lever, nunin kayan aikin da kayan wasa.

Ana amfani da dabbobi a cikin soda da kuma kayan shaye mai taushi. Pet yana da kusan 100% na kabewa na kwandon kayan kwalliya na 2 da kuma 1.5-lita kuma an kuma gane su sosai.

Ana amfani da dabbobi a cikin abinci, giya, kayan wanka. Ana sa ran neman dabbobi zai ci gaba da girma don ɗaukar abubuwan sha da ba a iya amfani da shi ba. Abubuwan da aka shirya sun hada da mustard, samfuran roba, gyada, gyada, gyada, dafa mai, dafa mai, lafuna da mai da hankali. Sabbin launuka, musamman launuka na Weber, sun shahara a cikin marufi na magunguna, bitamin da kayan wanka.

Ofaya daga cikin sabon abu da sauri aikace-aikace don kwafin dabbobi shine abinci ko abin sha, wanda ke buƙatar cika a yanayin zafi sosai. Yawancin abinci, musamman 'ya'yan itatuwa ko abubuwan sha tare da babban abun ciki, dole ne a tsare shi a 180f ko sama. Wannan yana samar da pasteurization (haifuwa) na samfurin da ganga a lokacin cika. Kwantena na al'ada na al'ada, kamar jakunkuna don soda da abin sha mai taushi, suna narkar da yanayin zafi sama da 160f, wanda yake saboda wani danniya. Ana haifar da taro mai wahala a lokacin shimfiɗar da aka yiwa murfin ganga. An inganta fasaha don inganta juriya da zafi yayin aiki, galibi ana kiranta "ƙirar zafi". Ya danganta da takamaiman fasaha na sarrafawa, akwai cikakkun bayanai game da fasaha na sarrafawa da yawa, waɗanda ke da ƙarfi sosai, dangane da abin da kwantena suka dace da cika a 190-195f za a iya samar da su. Abubuwan da ke buƙatar marufi tare da wannan halayyar sun hada da tsarkakakken ruwan 'ya'yan itace. Babban abin sha na ruwan 'ya'yan itace, Teas, wasu abubuwa masu tasowa da abin sha na wasanni, ɗaukar hoto, ruwan' ya'yan itace da kuma ruwa ma'adinai.

Sauran Edentsarshen amfani da dabbobi ana amfani da su sosai a cikin ɗakunan ruwa da kuma fim ɗin da ke ƙasa da takardar. Ana amfani da dabbobi azaman kayan ɗorawa na murfin don amfani da takarda mai amfani. Bugu da kari, crystalliintine pet (clast) ana iya amfani dashi azaman kayan asali don yin tarkon tanda.

Fim na gidan dabbobi yawanci ana daidaita shi da amfani da shi azaman X-ray da sauran fina-finai da kayan tunfuna da kuma faranti da fararen kwalet. Hakanan ana amfani da dabbobi azaman tef na masana'antu. Ba a yi amfani da fim ɗin gidan dabbobi ba kuma an fara amfani da shi don samar da kwantena na samar da kwantena, trays, samfuran kumfa da kofuna waɗanda aka sha.

Takaitawa: Petg sigar dabbobi ne na dabbobi, tare da tsauraran mafi girma, tsauri, juriya mafi girma, kuma ba shakka farashin.