By Andy daga masana'antar Baiyear
An sabunta ta Nuwamba 2, 2022
Anan shine cibiyar labarai ta masana'antar gyaran allura ta Baiyear.Bayan haka, Baiyear zai raba tsarin yin gyare-gyaren allura zuwa labarai da yawa don gabatar da nazarin albarkatun kayan aikin gyaran allura, saboda akwai abun ciki da yawa.Na gaba shine labarin na uku.
(5).BS (K abu)
1. Ayyukan BS
BS shine copolymer na butadiene-styrene, wanda ke da wasu tauri da elasticity, ƙananan tauri (mai laushi) da kuma nuna gaskiya.Ƙayyadadden nauyin kayan BS shine 1.01f \ cm3 (kama da ruwa).Kayan abu yana da sauƙin launi, yana da ruwa mai kyau, kuma yana da sauƙin siffa da sarrafawa.
2.Halayen tsari na BS
Matsakaicin zafin jiki na BS shine gabaɗaya 190-225 ° C, kuma zafin jiki ya fi dacewa 30-50 ° C.Ya kamata kayan ya bushe kafin sarrafawa, saboda mafi kyawun ruwa, karfin allura da saurin allura na iya zama ƙasa.
(6).PMMA (Acrylic)
1. Ayyukan PMMA
PMMA shine polymer amorphous, wanda aka fi sani da plexiglass.Kyakkyawan nuna gaskiya, kyakkyawan juriya na zafi (zafin nakasar zafi na 98 ° C), da juriya mai kyau.Kayayyakin sa suna da matsakaicin ƙarfin injina, ƙananan taurin ƙasa, kuma abubuwa masu wuyar gaske suna iya fashe su cikin sauƙi kuma suna barin burbushi, waɗanda suke kama da PS.Ba shi da sauƙi ya zama gaggautsa da fashe, kuma takamaiman nauyi shine 1.18g/cm3.
PMMA yana da kyawawan kaddarorin gani da kaddarorin juriya na yanayi.Shigar farin haske ya kai 92%.Samfuran PMMA suna da ƙarancin birefringence kuma sun dace musamman don yin fayafai na bidiyo.PMMA yana da kaddarorin masu rarrafe yanayin zafi.Ƙunƙarar damuwa na iya faruwa tare da ƙara nauyi da lokaci.
2. Tsarin halaye na PMMA
Abubuwan aiki na PMMA suna da tsauri, kuma yana da matukar damuwa ga danshi da zafin jiki.Ya kamata a bushe gaba daya kafin aiki (shawarar yanayin bushewa shine 90 ° C, 2 ~ 4 hours).°C) da gyare-gyare a ƙarƙashin matsin lamba, yawan zafin jiki ya fi dacewa 65-80 ° C.
Zaman lafiyar PMMA ba shi da kyau sosai, kuma za a lalata shi ta babban zafin jiki ko tsawon lokacin zama a mafi girman zafin jiki.Gudun dunƙule bai kamata ya zama babba ba (kimanin 60%), kuma sassan PMMA masu kauri suna da saurin kamuwa da “rabo”, waɗanda ke buƙatar sarrafa su ta hanyar amfani da babbar kofa, “ƙananan zafin jiki, zazzabi mai girma, jinkirin gudu” allura. hanya.
3.Typical aikace-aikace kewayon: mota masana'antu (sigina kayan aiki, kayan aiki panels, da dai sauransu), Pharmaceutical masana'antu (jini ajiya kwantena, da dai sauransu), masana'antu aikace-aikace (video fayafai, haske diffusers), mabukaci kaya (sha kofuna, stationery, da dai sauransu). ).
(7) PE (polyethylene)
1. Ayyukan PE
PE shine filastik tare da mafi girman fitarwa tsakanin robobi.An kwatanta shi da inganci mai laushi, rashin guba, ƙananan farashi, aiki mai dacewa, kyakkyawan juriya na sinadarai, ba sauƙin lalata ba, da wuya a buga.PE shine polymer crystalline na al'ada.
Yana da nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan da ake amfani da su ana amfani da su sune LDPE (ƙananan polyethylene mai ƙarancin ƙarfi) da HDPE (ɗayan polyethylene mai girma), waɗanda keɓaɓɓun robobi ne masu ƙarancin ƙarfi da ƙayyadaddun nauyi na 0.94g / cm3 (ƙananan fiye da ruwa);ƙananan ƙananan resins na LLDPE (Yawan yawa yana ƙasa da 0.910g/cc, kuma yawan LLDPE da LDPE yana tsakanin 0.91-0.925).
LDPE ya fi laushi, (wanda aka fi sani da roba mai laushi) HDPE an fi sani da roba mai laushi.Yana da wuya fiye da LDPE kuma abu ne na Semi-crystalline.Damuwar yanayin muhalli yana faruwa.Za'a iya rage damuwa na ciki ta hanyar amfani da kayan da ke da ƙananan halayen kwarara, don haka rage abin da ya faru.Yana da sauƙi a narke a cikin abubuwan kaushi na hydrocarbon lokacin da zafin jiki ya wuce 60 ° C, amma juriya ga rushewa ya fi na LDPE.
Babban crystallinity na HDPE yana haifar da girman girmansa, ƙarfin ƙarfi, zazzabi mai zafi mai zafi, danko da kwanciyar hankali na sinadarai.Ƙarfin juriyar shigar ciki fiye da LDPE.PE-HD yana da ƙananan ƙarfin tasiri.Abubuwan da aka fi sarrafawa ana sarrafa su ta hanyar yawa da rarraba nauyin kwayoyin halitta.
HDPE da ta dace da gyare-gyaren allura yana da ƙunƙuntaccen rarraba nauyin kwayoyin halitta.Don girman 0.91 ~ 0.925g / cm3, muna kiran shi nau'in PE-HD na farko;don girman 0.926 ~ 0.94g/cm3, ana kiransa nau'in HDPE na biyu;don girman 0.94 ~ 0.965g/cm3, ana kiransa nau'in HDPE na biyu shine nau'in HDPE na uku.
Hanyoyin da ke gudana na wannan abu suna da kyau sosai, tare da MFR tsakanin 0.1 da 28. Mafi girman nauyin kwayoyin halitta, mafi girman halayen halayen LDPE, amma mafi kyawun tasirin tasiri.HDPE yana da haɗari ga fashewar damuwa na muhalli.Ana iya rage tsagewa ta hanyar amfani da kayan da ke da ƙananan kaddarorin kwarara don rage damuwa na ciki.HDPE yana narkewa cikin sauƙi a cikin abubuwan kaushi na hydrocarbon lokacin da zafin jiki ya wuce 60C, amma juriyarsa ya fi na LDPE.
LDPE wani abu ne na Semi-crystalline tare da babban raguwa bayan gyare-gyare, tsakanin 1.5% da 4%.
LLDPE (Linear Low Density Polyethylene) yana da tsayin daka, shigarwa, tasiri da kaddarorin juriya waɗanda ke sa LLDPE ya dace da fina-finai.Kyakkyawan juriya ga fatattaka damuwa na muhalli, juriya mai ƙarancin zafin jiki da juriya na warpage yana sa LLDPE kyakkyawa ga bututu, fitar da takarda da duk aikace-aikacen gyare-gyare.Sabuwar aikace-aikacen LLDPE shine a matsayin ciyawa don wuraren da ake zubar da ƙasa da kuma rufin tafkunan sharar gida.
2. Tsarin halaye na PE
Mafi sanannen fasalin sassan PE shine cewa ƙimar raguwar gyare-gyaren yana da girma, wanda ke da saurin raguwa da lalacewa.Kayan PE yana da ƙarancin sha ruwa, don haka baya buƙatar bushewa.PE yana da kewayon zafin aiki mai faɗi kuma ba shi da sauƙin rubewa (zazzabi mai lalacewa shine 320 ° C).Idan matsa lamba ya yi girma, yawancin ɓangaren zai zama babba kuma raguwar raguwa zai zama ƙarami.
A fluidity na PE ne matsakaici, da aiki yanayi ya kamata a tsananin sarrafawa, da mold zazzabi ya kamata a kiyaye akai (40-60 ℃).Matsayin crystallization na PE yana da alaƙa da yanayin aiwatar da gyare-gyare.Yana da zafin daskarewa mafi girma da ƙananan zafin jiki, kuma crystallinity yana da ƙasa.A lokacin aikin crystallization, saboda anisotropy na shrinkage, damuwa na ciki yana da hankali, kuma sassan PE suna da wuyar lalacewa da raguwa.
Ana sanya samfurin a cikin wanka na ruwa a cikin ruwan zafi a 80 ° C, wanda zai iya sassauta matsa lamba zuwa wani matsayi.A lokacin aiwatar da gyare-gyaren, zafin kayan abu da zafin jiki ya kamata ya zama mafi girma, kuma ya kamata a rage matsa lamba a ƙarƙashin yanayin tabbatar da ingancin sassan.Ana buƙatar sanyaya na ƙirar musamman don zama mai sauri da daidaituwa, kuma samfurin zai yi zafi lokacin da aka lalata.
HDPE bushewa: ba a buƙatar bushewa idan an adana shi da kyau.Narke zafin jiki 220 ~ 260C.Don kayan da ke da manyan kwayoyin halitta, ana ba da shawarar zafin narke tsakanin 200 da 250C.
Matsakaicin zafin jiki: 50 ~ 95C.Ya kamata sassan filastik da kaurin bangon da ke ƙasa da 6mm su yi amfani da zafin jiki mafi girma, kuma sassan filastik tare da kaurin bango sama da 6mm yakamata su yi amfani da ƙananan zafin jiki.Yanayin sanyi na ɓangaren filastik ya kamata ya zama iri ɗaya don rage bambanci a cikin raguwa.Domin mafi kyau duka machining sake zagayowar lokaci, sanyaya tashar diamita kamata ba kasa da 8mm da nisa daga mold surface ya kamata a cikin 1.3d (inda "d" ne diamita na sanyaya tashar).
Matsakaicin allura: 700 ~ 1050bar.Gudun allura: Ana ba da shawarar allura mai sauri.Masu gudu da ƙofofi: Diamita na mai gudu yana tsakanin 4 zuwa 7.5mm, kuma tsayin mai gudu ya kamata ya zama ɗan gajeren lokaci.Ana iya amfani da ƙofofi iri-iri, kuma tsayin ƙofar kada ya wuce 0.75mm.Musamman dace da yin amfani da zafi mai gudu molds.
Dukiyar "laushi-on-stretch" na LLDPE yana da hasara a cikin tsarin fim ɗin da aka busa, kuma kumfa fim na LLDPE ba shi da kwanciyar hankali kamar na LDPE.Dole ne a fadada tazarar mutuwar don guje wa rage yawan kayan aiki saboda babban matsin baya da narke karaya.Matsakaicin gibin mutuwa na LDPE da LLDPE sune 0.024-0.040 a cikin da 0.060-0.10 a, bi da bi.
3. Yawan aikace-aikace na yau da kullun:
LLDPE ya shiga mafi yawan kasuwannin gargajiya na polyethylene, gami da fim, gyare-gyare, bututu, da waya da kebul.Anti-leakage ciyawa sabuwar kasuwa ce ta LLDPE.Mulch, babban takarda da aka fitar da aka yi amfani da shi azaman zubar da shara da sharar ruwa don hana tsinkewa ko gurɓata wuraren da ke kewaye.
Misalai sun haɗa da samar da jakunkuna, jakunkuna na shara, marufi na roba, layukan masana'antu, layukan tawul da buhunan sayayya, duk waɗannan suna amfani da ingantaccen ƙarfin guduro da taurin.Fina-finai masu haske, irin su buhunan burodi, LDPE sun mamaye shi saboda mafi kyawun hazo.
Koyaya, haɗakar LLDPE da LDPE zasu inganta ƙarfi.Juriya na shiga ciki da taurin fina-finai na LDPE ba tare da tasiri sosai akan tsayuwar fim ba.
HDPE aikace-aikacen kewayon: kwantena firiji, kwantena na ajiya, kayan dafa abinci na gida, murfin rufewa, da sauransu.
Don ci gaba, idan kuna son ƙarin sani, da fatan za a ji daɗin tuntuɓar mu.Baiyear babbar masana'anta ce ta haɓaka masana'anta na filastik, gyare-gyaren allura da sarrafa ƙarfe.Ko kuma ku ci gaba da kula da cibiyar labarai ta gidan yanar gizon mu: www.baidasy.com, za mu ci gaba da sabunta labaran ilimin da suka shafi masana'antar sarrafa allura.
Adireshin: Andy Yang
Menene app: +86 13968705428
Email: Andy@baidasy.com
Lokacin aikawa: Nuwamba-29-2022
