Ntawm qhov tod tes, nws yuav ua haujlwm ntau dua, thiab niaj hnub nrhiav kev ua tiav ntawm cov khoom lag luam thiab txuas ntxiv ntawm kev pabcuam lub neej;Ntawm qhov tod tes, thaum txhim kho cov khoom zoo, peb yuav ua raws li kev txo nqi ntawm cov khoom siv raw thiab cov nqi khiav lag luam, kom tau txais txiaj ntsig ntau dua.
Nruab nrab thiab loj tshuab moulding khoom
Peb lub hauv paus ntsiab lus yuav tsum raug coj mus rau hauv tus account hauv kev tsim qauv ntawm cov khoom siv tshuab molding:
1) Sim ua kom tau raws li ntau yam kev ua haujlwm thiab kev siv cov khoom hollow tshuab molding;
2) Cov mis yas raw khoom muaj kev ua haujlwm zoo;
3) Txo cov nqi tsim khoom los ntawm kev tsim qauv thiab kev txhim kho.
Nyob rau tib lub sijhawm, vim kev nthuav dav ntawm extrusion tshuab moulding khoom thiab engineering txhawb ntau yam, kev ua tau zoo ntawm tshuab moulding khoom muab tso rau hauv kev xav tau ntau dua.Xws li tsheb, tsheb, kev lag luam tsheb ciav hlau ceev, aviation, aerospace, navigation, machinery, electronics, chemical, logistics, tshuaj ntim khoom, ntim khoom noj thiab dej haus, niaj hnub tsev neeg, kev ua liaj ua teb, engineering daim ntawv thov, nto ntab lub cev thiab ntau lwm yam kev lag luam txhawb nqa. tshuab moulding khoom thiab lwm yam, Lub zog siab, siab tawv, siab precision, ntev lub neej thiab zoo kub kuj yuav tsum tau rau yas tshuab molding khoom.Yog li ntawd, kev hloov kho ntawm cov tshuab moulding khoom no tseem ceeb heev.
Cov kev hloov kho yas feem ntau suav nrog kev hloov kho lub cev thiab kev hloov kho tshuaj.Kev hloov kho tshuaj yog hais txog kev hloov kho uas hloov hom thiab kev sib txuas ntawm cov atoms lossis pawg ntawm cov saw hlau molecular ntawm polymers los ntawm cov txheej txheem tshuaj.Cov yas tuaj yeem tsim cov ntaub ntawv tshwj xeeb polymer tshiab los ntawm kev thaiv copolymerization, graft copolymerization, cross-linking cov tshuaj tiv thaiv, lossis los ntawm kev qhia cov pab pawg ua haujlwm tshiab.Kev hloov kho tshuaj tuaj yeem ua rau cov khoom tau txais kev ua haujlwm tshiab lossis zoo dua lub cev thiab tshuaj lom neeg.
Hauv kev ua haujlwm tiag tiag ntawm kev hloov pauv ntawm cov khoom siv extrusion tshuab moulding, kev hloov kho lub cev yog siv ntau dua li kev hloov kho tshuaj.Lub cev hloov kho tshuab ntawm extrusion tshuab moulding khoom yog feem ntau siv raws li hauv qab no: ① hloov kho;② Kev hloov kho sib xyaw;③ Txhim kho kev hloov kho;(4) toughening hloov kho;(5) kev hloov kho nano-composite;⑥ Kev hloov kho ua haujlwm thiab lwm yam.
1. Formulation technology ntawm feem ntau siv tshuab moulding khoom
1) 25L yas thoob mis mis, saib Table 1.
25L yas thoob mis mis
Nws tuaj yeem pom los ntawm cov mis hauv Table 1 tias ob hom HDPE siv rau hauv cov mis, thiab lub zog, hardness thiab toughness ntawm tshuab molded khoom tuaj yeem lav kom tau raws li qhov yuav tsum tau ua ntawm 25L series yas thoob.
Ob qho khoom xyaw tseem ceeb hauv cov mis yog teeb tsa hauv ib nrab.Hauv kev siv tswv yim, qhov kev faib ua feem ntawm cov khoom xyaw tseem ceeb hauv cov mis tuaj yeem hloov kho raws li qhov xav tau ntawm kev ua haujlwm sib txawv.Nyob rau tib lub sijhawm, hom kev xaiv ntawm cov khoom xyaw tseem ceeb kuj tuaj yeem xaiv raws li qhov xwm txheej tshwj xeeb ntawm cov khoom lag luam.
2) Formulation tsim ntawm hollow yas ntim chim rau tej tshuaj lom neeg:
Xws li: sim tsim 25L thawv ntim nruas, qhov loj ntawm lub nruas yog 1800g.Siv rau muaj concentrated nitric acid ntawm 68.2% concentration.Qhov kev tiv thaiv ntawm HDPE ntshiab lub thawv rau concentrated nitric acid tsis txaus, tab sis kuj ntawm HDPE rau concentrated nitric acid tuaj yeem txhim kho tau zoo los ntawm kev ntxiv cov khoom siv polymer tsim nyog.Ntawd yog, EVA thiab LC yog siv los hloov HDPE los tsim cov ntim ntim nitric acid.Cov qauv xeem tau qhia hauv Table 2.
Formula ntawm hollow yas packing chim rau cov tshuaj txaus ntshai
Hauv Table 2, HDPE yog HHM5205, thiab yaj tus nqi MFI = 0.35g / 10min.EVA 560, melt flow rate MFI = 3.5g / 10min, ceev = 0.93, VA cov ntsiab lus 14%;Tsawg molecular modifier LC, ua nyob rau hauv Suav teb, muaj qib.Cov txiaj ntsig ntawm kev ntim cov nruas uas tau npaj los ntawm peb cov qauv saum toj no muaj nyob rau hauv Table 3. Cov txheej txheem saum toj no yog txhua yam tsim nyog los ntawm kev tshuaj xyuas cov khoom ntim zoo tib yam.Txawm li cas los xij, kom muaj cov concentrated nitric acid, mis nyuj 1 lub hlis tom qab tawg, yog li nws tsis haum rau muaj cov concentrated nitric acid;Formula 2 6 lub hlis tom qab qhov kev sim poob qis tawg, tsis tsim nyog, txawm tias lwm qhov kev sim dhau los, yog tias siv cov tshuaj nitric acid yog qhov txaus ntshai, nws tsis pom zoo kom siv;
Nruab nrab thiab loj hollow tshuab molding khoom formulation technology
Formula 3 Raws li pom nyob rau hauv Table 3-18, tag nrho cov kev ntsuam xyuas tau tsim nyog tom qab ib nrab xyoo ntawm concentrated nitric acid.
Hauv kev xaus, tom qab ntxiv EVA thiab LC rau hauv HDPE, qhov kev tiv thaiv ntawm HDPE hloov mus rau cov ntsiab lus nitric acid tau txhim kho pom tseeb, thiab nws tuaj yeem siv los tsim cov concentrated nitric acid (68.4%) ntim ntim.
3) Lub rooj yas yas rau cov rooj zaum yas sab nraum zoov.(Saib daim duab 4)
Lus Cim: 7000F thiab 6098 hauv cov mis hauv Table 4 yog hdPe nrog qhov hnyav molecular.18D yog polyethylene tsawg ntom.
EVA feem ntau yog siv los ua kev pabcuam hauv cov qauv no los txhim kho cov tsos zoo ntawm cov khoom siv molded thiab txhim kho qhov cuam tshuam.Thiab nws muaj kev tiv thaiv ntev dua rau ib puag ncig kev ntxhov siab tawg lub sijhawm.
4) Rau daim ntawv qhia ntawm 50-100L tshuab moulded ntim, saib Table 5.
Cov qauv siv hluav taws xob cuam tshuam nrog lub rooj yas yas rau cov rooj zaum yas sab nraum zoov
Cov mis hauv Table 5 tuaj yeem hloov kho raws li kev siv tiag tiag.
Nyob rau hauv cov qauv nyob rau hauv Table 5, nrog rau kev nce ntawm kev faib ua feem ntawm yas raw cov ntaub ntawv nrog ntau dua molecular hnyav, lub zog, nruj thiab kub tsis kam ntawm cov khoom yog txhim khu kev qha, thiab ib puag ncig kev nyuaj siab cracking kuj lub sij hawm ntev.Cov neeg tsim khoom lag luam tuaj yeem kho qhov sib txawv ntawm ntau yam khoom siv yas raws li qhov yuav tsum tau muaj ntawm cov khoom sib txawv kom tau raws li cov kev cai sib txawv.
5) 100-220L tshuab moulded ntim
Vim hais tias tus txheeb ze molecular hnyav ntawm zoo tib yam high density polyethylene resin tsis siab, xws li HHM5502 resin yog ib tug raug tshuab moulded ethylene thiab hexene copolymer nrog ib tug txheeb ze molecular hnyav li ntawm 150,000, txawm hais tias nws txhua yam khoom, rigidity thiab deg hardness yog zoo, Tab sis. Cov kev ntxhov siab ib puag ncig tawg tsis kam thiab cuam tshuam lub zog tsis zoo, lub zog yaj tsis siab, thiab qhov tshwm sim poob yog qhov hnyav hauv cov txheej txheem ntawm extrusion billet.Yog hais tias cov resin manufacturing 200L, net hnyav 10.5kg yas VAT raws li lub teb chaws tus qauv rau kev xeem poob, yuav muaj rupture tshwm sim.Nws tuaj yeem pom tau tias cov resin nrog qhov hnyav molecular yog qhov yooj yim tsis haum rau kev tsim cov yas loj ntawm ntau tshaj 100 ~ 200L.Siv HMWHDPE resin nrog ib tug txheeb ze molecular hnyav ntawm ntau tshaj 250 txhiab tshuab moulding ntawm ntau tshaj 200L loj thoob nyob rau hauv tib yam kev xeem raws li qhov kev xeem poob, feem ntau tsis tshwm sim rupture tshwm sim, nyob rau tib lub sij hawm lub uniformity ntawm lub chim phab ntsa thickness muaj. tau zoo txhim kho, lub thoob loj tsis kam rau ib puag ncig kev ntxhov siab tawg muaj peev xwm tau muab ob npaug rau.Yog li ntawd, thaum tsim cov qauv ntawm 100-220 liters loj hollow yas chim, tus txheeb ze molecular hnyav tshaj 250,000 yuav tsum tau muab xam raws li thawj qhov taw qhia, ua raws li cov resin ceev.Kev xyaum tau ua pov thawj tias, Thaum qhov ntom ntawm cov resin nyob rau hauv thaj tsam ntawm 0.945 ~ 0.955g / cm3, rigidity thiab kev ntxhov siab tawg tsis kam ntawm siab molecular hnyav HIGH-DENSITY polyethylene resin cov khoom kuj sib npaug.
Hauv kev tsim khoom, thaum muaj kev cuam tshuam thiab kev ntxhov siab tawg ntawm cov khoom xav tau (xws li roj av tank, thiab lwm yam), resin nrog qhov ceev ntawm 0.945g / cm3 feem ntau yog siv los ua raw khoom;Qhov thib ob yog cov khoom ua haujlwm ntawm cov txheeb ze yooj yim.
Niaj hnub no, ntau lub teb chaws tsim thiab tsim cov khoom siv tshwj xeeb rau cov thoob yas loj.Nws tus txheeb ze molecular hnyav, yaj ntws tus nqi thiab txheeb ze ntom yog haum rau ua loj hollow yas thoob.
Nyob rau hauv 200 L ob npaug L nplhaib tsim cov mis ntawm cov phom phom phom sij, kev ua haujlwm ntev tshuab moulding ntau lawm tau pom tias siv ntau qib ntawm cov khoom hnyav molecular polyethylene yas raw cov ntaub ntawv sib xyaw ua ke rau kev tsim khoom, nws cov khoom zoo zoo dua li cov yas ib leeg. raw cov ntaub ntawv formula ntau lawm stability thiab lwm yam kev ua tau zoo yuav txhim kho ntau, qhov no tsim nyog yuav ua rau txaus ntshai pob chim khoom Hoobkas muab qhov tseem ceeb heev rau, Yuav kom txo tau zus tau tej cov los ntawm ib tug yas raw khoom.Tsis tas li ntawd, nws tsim nyog nco ntsoov tias vim qhov kev siv tshwj xeeb ntawm 200L ob chav L lub nplhaib txaus ntshai bale drums, nws tau xaus lus los ntawm ntau qhov kev ua tau zoo uas: Tsis txhob dig muag hauv qhov loj-loj hollow tshuab molding ntawm cov ntaub ntawv raw khoom ntxiv. ntxhia masterbatch kom txo cov nqi lossis txhim kho qhov nyuaj, lossis muaj kev cuam tshuam ntau dua ntawm cov khoom zoo, tshwj xeeb tshaj yog rau cov khoom lag luam txaus ntshai cov khoom ntim ntim, qhov zoo ntawm cov khoom yuav nyuaj rau kev tiv thaiv tag nrho, hauv daim ntawv qhia no hloov kho tshuab tseem tsis tau ntxiv. kev tshawb fawb thiab kev loj hlob.
Extrusion tshuab moulding khoom ntau dua thiab ntau dua, kev siv cov xwm txheej sib txawv, kev siv ntau thiab ntau cov ntaub ntawv yas, ntau hom, hom kuj muaj ntau, los ntawm qhov tseeb ntawm ntau lawm, tshuab moulding manufacturers yuav tsum tsim thiab txhim kho cov qauv ntawm txhua yam khoom. raws li lawv tus kheej cov yam ntxwv ntawm cov khoom, thiaj li ua tiav cov txiaj ntsig zoo.Cov txheej txheem txheej txheem qhia saum toj no tsuas yog cov qauv ntawm qee cov khoom siv tshuab moulding, thiab nws tau pom zoo kom siv rau kev siv hauv kev tsim cov khoom siv tshuab molding.
Post lub sij hawm: Oct-28-2021