NaAndy anobva kuBaiyear fekitori
Yakadzorerwa November 2, 2022
Heino nzvimbo yenhau yeBaiyear's injection molding industry.Tevere, Baiyear ichakamura jekiseni rekuumba kuita zvinyorwa zvakati wandei kusuma ongororo yezvakagadzirwa zvejekiseni rekuumba maitiro, nekuti kune zvakawanda zvirimo.Chinotevera chinyorwa chechitatu.
(5).BS (K zvinhu)
1. Kuita kweBS
BS ndeye butadiene-styrene copolymer, ine kumwe kuoma uye elasticity, yakaderera kuoma (yakapfava) uye zvakanaka pachena.Iyo chaiyo gravity yeBS zvinhu ndeye 1.01f\cm3 (yakafanana nemvura).Izvo zvinhu zviri nyore kuisa ruvara, zvine fluidity yakanaka, uye zviri nyore kugadzira nekugadzirisa.
2.The maitiro maitiro eBS
Iyo tembiricha yekugadziridza yeBS inowanzo 190-225 °C, uye tembiricha yekuumbwa ingangoita 30-50 °C.Izvo zvinhu zvinofanirwa kunge zvaoma zvisati zvagadziriswa, nekuda kweiyo iri nani fluidity, iyo jekiseni kumanikidza uye jekiseni kumhanya kunogona kudzikira.
(6).PMMA (Akriliki)
1. Kuita kwePMMA
PMMA inonzi amorphous polymer, inowanzozivikanwa seplexiglass.Kujeka kwakanakisa, kwakanaka kupisa kupisa (kupisa deformation tembiricha ye98 ° C), uye yakanaka kukanganisa kuramba.Zvigadzirwa zvaro zvine simba repakati pemagetsi, kuomarara kwepasi pasi, uye zviri nyore kukweshwa nezvinhu zvakaoma uye kusiya zvimiro, zvakafanana nePS.Hazvisi nyore kuve brittle uye kutsemuka, uye iyo chaiyo giravhiti ndeye 1.18g/cm3.
PMMA ine yakanakisa optical zvivakwa uye mamiriro ekunze ekudzivirira zvivakwa.Kupinda kwechiedza chena kwakakwira se92%.PMMA zvigadzirwa vane yakaderera birefringence uye kunyanya akakodzera kugadzira mavhidhiyo discs.PMMA ine kamuri tembiricha zvinokambaira zvivakwa.Stress cracking inogona kuitika nekuwedzera mutoro uye nguva.
2. Maitiro maitiro ePMMA
Izvo zvinodikanwa zvekugadzirisa zvePMMA zvakasimba, uye zvinonyanya kunzwisiswa nehunyoro uye tembiricha.Inofanira kuomeswa zvakakwana isati yagadziriswa (inokurudzirwa kuomeswa mamiriro ari 90 ° C, 2 ~ 4 maawa).°C) uye kuumba pasi pekumanikidzwa, tembiricha yeforoma inonyanya 65-80 °C.
Kugadzikana kwePMMA hakuna kunaka kwazvo, uye ichaderedzwa nekupisa kwakanyanya kana nguva yekugara kwenguva refu pane tembiricha yepamusoro.Iyo screw Speed haifanire kunge yakakura kwazvo (inenge 60%), uye yakakora PMMA zvikamu zvinotapukira ku "voids", iyo inoda kugadziriswa nekushandisa gedhi rakakura, "yakaderera tembiricha, tembiricha yepamusoro, inononoka" jekiseni. nzira.
3.Typical application range: indasitiri yemotokari (signal equipment, instrument panels, etc.), indasitiri yemishonga (midziyo yekuchengetedza ropa, nezvimwewo), maindasitiri ekushandisa (video discs, light diffusers), zvinhu zvevatengi (mikombe yekunwa, stationery, nezvimwe. )
(7) PE (polyethylene)
1. Kuita kwePE
PE ipurasitiki ine yakakura kubuda pakati pemapurasitiki.Iyo inoratidzirwa nemhando yakapfava, isiri-chepfu, mutengo wakaderera, kugadzirisa kwakaringana, yakanaka makemikari kuramba, kwete nyore kuita ngura, uye yakaoma kudhinda.PE yakajairika crystalline polymer.
Iine marudzi akawanda, anowanzoshandiswa iLDPE (yakaderera density polyethylene) uye HDPE (yakakwirira density polyethylene), ayo ari translucent mapurasitiki ane simba shoma uye chaiyo giravhiti 0.94g/cm3 (diki pane mvura);yakaderera kwazvo density LLDPE resins (Iyo density yakaderera pane 0.910g/cc, uye density yeLLDPE neLDPE iri pakati pe0.91-0.925).
LDPE yakapfava, (inowanzozivikanwa serabha yakapfava) HDPE inowanzozivikanwa serabha rakaomarara.Iyo yakaoma kupfuura LDPE uye ndeye semi-crystalline zvinhu.Environmental stress cracking inoitika.Kushungurudzika kwemukati kunogona kuderedzwa nekushandisa zvinhu zvine maitiro akadzika kwazvo ekuyerera, nekudaro kuderedza chiitiko chekuputika.Zviri nyore kunyungudika mumahydrocarbon solvents kana tembiricha yakakwira kupfuura 60 °C, asi kuramba kwayo kunyungudika kuri nani pane kuya kweLDPE.
Iyo yakakwira crystallinity yeHDPE inokonzeresa kuwanda kwayo, kusimba kwesimba, tembiricha yekukanganisa tembiricha, viscosity uye kugadzikana kwemakemikari.Kuramba kwakasimba kwekupinda kupfuura LDPE.PE-HD ine simba rekuita rakaderera.Zvivakwa zvinonyanya kudzorwa ne density uye molecular weight distribution.
HDPE yakakodzera kuumba jekiseni ine yakamanikana mamorekuru uremu kugovera.Nokuda kwehuwandu hwe 0.91 ~ 0.925g / cm3, tinoitumidza rudzi rwekutanga rwePE-HD;nokuda kwehuwandu hwe 0.926 ~ 0.94g / cm3, inonzi yechipiri rudzi rweHDPE;nokuda kwehuwandu hwe 0.94 ~ 0.965g / cm3, inonzi yechipiri mhando yeHDPE Ndiyo yechitatu mhando HDPE.
Maitiro ekuyerera echinyorwa ichi akanaka kwazvo, ane MFR pakati pe 0.1 ne 28. Iyo yakakwirira ye molecular uremu, hurombo hwekuyerera maitiro eLDPE, asi zviri nani simba rekukanganisa.HDPE inokonzeresa kusagadzikana kwemamiriro ekunze.Kutsemuka kunogona kudzikiswa nekushandisa zvinhu zvine yakaderera kuyerera zvivakwa kuderedza kushushikana kwemukati.HDPE inonyungudika zviri nyore muhydrocarbon solvents kana tembiricha yakwira kupfuura 60C, asi kuramba kwayo kunyungudika kuri nani pane kuya kweLDPE.
LDPE ndeye semi-crystalline zvinhu zvine yakakwirira shrinkage mushure mekuumbwa, pakati pe1.5% ne4%.
LLDPE (Linear Low Density Polyethylene) ine yakakwirira tensile, kupinda, kukanganisa uye kubvarura kuramba zvivakwa zvinoita kuti LLDPE ikwane mafirimu.Kupokana kwayo kunopesana nemamiriro ekunze kusagadzikana kupaza, yakaderera tembiricha kukanganisa kuramba uye warpage kuramba inoita kuti LLDPE inakidze pombi, sheet extrusion uye ese ekuumba maapplication.Ikozvino kushandiswa kweLLDPE kwakangoita semuvharo wemarara uye maramba emadziva emarara.
2. Maitiro maitiro ePE
Chinhu chinonyanya kucherechedzwa chezvikamu zvePE ndechekuti molding shrinkage rate yakakura, iyo inowanzoita shrinkage uye deformation.PE zvinhu zvine mvura yakaderera kunyura, saka haidi kuomeswa.PE ine tembiricha yekugadzira yakakura uye haisi nyore kuora (tembiricha yekuora i320 ° C).Kana kudzvinyirirwa kwakakura, kuwanda kwechikamu kunenge kwakakwirira uye shrinkage rate ichava duku.
Iyo fluidity yePE ndeyepakati, mamiriro ekugadzirisa anofanirwa kudzorwa zvakanyanya, uye tembiricha yekuumbwa inofanirwa kuchengetedzwa nguva dzose (40-60 ℃).Iyo degree yecrystallization yePE inoenderana nemamiriro ekuumba maitiro.Iine tembiricha yepamusoro yechando uye tembiricha yakaderera mold, uye crystallinity yakaderera.Munguva yekristallisation process, nekuda kweanisotropy ye shrinkage, kushushikana kwemukati kunowedzera, uye zvikamu zvePE zvinokonzeresa deformation uye kuputika.
Chigadzirwa chacho chinoiswa mubhati remvura mumvura inopisa pa80 ° C, iyo inogona kusunungura kudzvinyirira kune imwe nzvimbo.Munguva yekuumba, tembiricha yemidziyo uye tembiricha yekuumbwa inofanira kunge yakakwira, uye kudzvanywa kwejekiseni kunofanirwa kunge kwakadzikira pasi pechigadziro chekuona kunaka kwezvikamu.Iko kutonhora kwe mold kunonyanya kudiwa kukurumidza uye yunifomu, uye chigadzirwa chichave chichipisa kana dhizaini.
HDPE kuomeswa: kuomeswa hakudiwi kana kuchengetwa zvakanaka.Kunyunguduka tembiricha 220 ~ 260C.Zvemidziyo ine mamorekuru akakura, inokurudzirwa tembiricha yekunyunguduka iri pakati pe200 ne250C.
Mold tembiricha: 50 ~ 95C.Zvikamu zvepurasitiki zvine ukomba hwemadziro pasi pe6mm zvinofanirwa kushandisa tembiricha yakakwira mold, uye zvikamu zvepurasitiki zvine ukobvu hwemadziro pamusoro pe6mm zvinofanirwa kushandisa yakaderera mold tembiricha.Kutonhora kunotonhora kwechikamu chepurasitiki kunofanira kuva yunifomu kuderedza mutsauko mukuderera.Kuti uwane yakakwana machining kutenderera nguva, iyo dhayamita yekutonhodza dhayamita haifanirwe kunge isingasviki 8mm uye chinhambwe kubva pane mold chinofanirwa kunge chiri mukati me1.3d (apo "d" iri dhayamita yechiteshi chekutonhodza).
Jekiseni kudzvinyirirwa: 700 ~ 1050bar.Injection Speed: High-speed jekiseni inokurudzirwa.Vanomhanya nemasuwo: Iyo dhayamita yemhanyi iri pakati pe4 ne7.5mm, uye urefu hwemumhanyi hunofanira kunge hupfupi sezvinobvira.Mhando dzakasiyana-siyana dzemagedhi dzinogona kushandiswa, uye kureba kwegedhi hakufaniri kudarika 0.75mm.Kunyanya akakodzera kushandiswa inopisa mumhanyi molds.
Iyo "yakapfava-pa-kutambanudza" pfuma yeLLDPE idambudziko mukuputitswa firimu maitiro, uye bhaisikopo rakafuridzwa reLLDPE harina kugadzikana seLDPE.Iyo gap yekufa inofanirwa kukwidziridzwa kudzivirira kuderedzwa kwekupinda nekuda kweiyo yakakwira kumashure kudzvanywa uye kunyungudika kuputsika.Iyo general die gap zviyero zveLDPE neLLDPE ndeye 0.024-0.040 mukati uye 0.060-0.10 mukati, zvichiteerana.
3. Yakajairika application range:
LLDPE yakapinda mumisika yakawanda yechinyakare yepolyethylene, kusanganisira firimu, kuumba, pombi, uye waya netambo.Anti-leakage mulch ichangoburwa LLDPE musika.Mulch, shizha rakakura rakadhindwa rinoshandiswa semarara uye marara emadziva ekudzivirira kudzivirira kubuda kana kusvibiswa kwenzvimbo dzakatenderedza.
Mienzaniso inosanganisira kugadzirwa kwemabhegi, mabhegi emarara, kurongedzerwa kwerastiki, liner dzemaindasitiri, machira ematauro uye mabhegi ekutenga, izvo zvese zvinotora mukana wekusimba kweresin iyi uye kuoma.Mafirimu akajeka, akadai semabhegi echingwa, akadzorwa neLDPE nekuda kwehunyoro huri nani.
Nekudaro, musanganiswa weLLDPE neLDPE unovandudza simba.Kupinda kuramba uye kuoma kwemafirimu eLDPE pasina kukanganisa zvakanyanya kujeka kwefirimu.
HDPE application renji: midziyo yefiriji, midziyo yekuchengetera, imba yekubikira yekicheni, yekuvharira chisimbiso, nezvimwe.
Kuenderera mberi, kana uchida kuziva zvakawanda, ndapota inzwa wakasununguka kutibata nesu.Baiyear ifekitari yakakura yakazara yakazara inobatanidza kugadzira epurasitiki mold, jekiseni rekugadzira uye sheet simbi kugadzirisa.Kana kuti iwe unogona kuramba uchiteerera kune nzvimbo yenhau yewebhusaiti yedu yepamutemo: www.baidasy.com, isu ticharamba tichivandudza ruzivo rwenhau dzine chekuita nejekiseni molding processing industry.
Contact:Andy Yang
What's app : +86 13968705428
Email: Andy@baidasy.com
Nguva yekutumira: Nov-29-2022
