2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28
Tsawg tus neeg paub tias cov khoom siv xws li polyethylene siv quav ciab hauv ntau qhov kev lag luam. Tej zaum txawm tias nws lub npe ua rau qee qhov xav tsis thoob. Txawm li cas los xij, cov khoom muaj nyob thiab yog hluavtaws, thiab txoj kev tau txais nws yog Fischer-Tropsch txoj kev nrog kev koom tes ntawm cov roj synthesis.
piav qhia txog yam khoom
Kev siv lub ntsiab ntawm polyethylene siv quav ciab yog ib qho ntxiv uas ua rau kom cov pob txha ntawm cov tswm ciab. Tsis tas li ntawd, nws yog siv los txhim kho qhov zoo ntawm cov qauv sib xyaw uas tuaj yeem siv thaum lub sij hawm xim casting thiab hauv kev tsim cov duab siv quav ciab.
Muaj qee yam khoom siv tshaj plaws uas koom nrog pawg no. Cov no suav nrog paraffin, AF-1 alloy, ZV-1 wax, Paralight 17, 3zV-1 wax, Parazon 11, Svoz-60.
Muaj ib qho quav uas tau los ntawm kev ua cov ethylene ntshiab. Nws peculiarity nyob rau hauv qhov tseeb hais tias nws tsis muaj tej pab pawg neeg, tab sis tsuas yog siv raws li ib tug lwm lubricant.
Muaj oxidized polyethylene wax, uas txawv nyob rau hauv uas nws muaj ntau npaum li cas ntawm acidic pab pawg neeg. vimQhov no yog qhov yooj yim heev kom ua tiav emulsification. Raws li rau nws cov khoom, nws muaj tag nrho cov zoo ntawm ob sab nraud thiab sab hauv lubrication.
Basic nta
Lub cev thiab tshuaj lom neeg cov yam ntxwv ntawm polyethylene siv quav ciab yuav txawv nyob ntawm seb hom twg nws nyob. Feem ntau, cov tshuaj no tau nthuav tawm nyob rau hauv daim ntawv ntawm flakes, granules los yog hmoov. Hauv daim ntawv no, nws qhov ntom ntom yog 0.9g / cm 3, lub melting point ncav cuag 107 degrees Celsius, thiab yaj viscosity yog 350 ± 50.
Qhov zoo ntawm polyethylene wax yog tias nws nthuav tawm lubricity zoo heev thaum extrusion. Ob leeg oxidized thiab non-oxidized compounds tuaj yeem tau los ntawm kev siv cov txheej txheem hluavtaws.
Raws li kev ntxhib los mos, cov quav ciab feem ntau yog xim daj lossis xim dawb thiab ua rau cov flakes zoo nrog ntau tus yam ntxwv tas li. Yuav kom tau txais nws, lawv mus rau txoj kev ntawm polymerization ntawm polyethylene.
Wax type parameters
Oxidized hluavtaws hluavtaws yog qhov txawv los ntawm ntau yam. Nws cov xim yuav luag dawb, melting point yog 99-108, thiab solidification yog 94-100 degrees Celsius. Nyob rau tib lub sijhawm, nyob rau hauv lub xeev txias, nws hardness nyob rau hauv thaj tsam ntawm 350-400 bar, thiab qhov ceev yog 0.96 g / cm33.
Cov pab pawg neeg tsis muaj oxidized ntawm cov tshuaj no yog dawb. Nws melting point yog me ntsis siab dua thiab yog 101-109 degrees Celsius, thiabntawm no lub freezing point tseem zoo li qub. Thaum txias, uas tsis yog-oxidized ciab kuj yog ib tug qis hardness, tsuas yog 150-300 bar. Qhov ceev tau txo, tab sis tsis ntau, thiab yog 0.93 g / cm3.
Nws ua rau kev txiav txim siab los xav txog cov yam ntxwv ntawm PV-200 polyethylene wax, vim nws muaj ntau heev. Lub yaj viscosity ntawm no hluavtaws compound ntawm qhov kub ntawm yam tsawg kawg yog 140 degrees Celsius mus txog ntawm 180 mus rau 300. Thaum poob, qhov taw qhia yog tsawg kawg yog 1030C, thiab qhov loj feem ntawm tshauv. nyob rau hauv qhov sib tov tsis pub tshaj 0.02%. Cov khoom siv raw no yog tsim nyob rau hauv daim ntawv ntawm spherical hais nrog ib txoj kab uas hla me me.
Siv oxidized thiab tsis-oxidized HP hauv kev lag luam
Raws li kev siv cov khoom siv hluavtaws uas tsis yog oxidized, nws zoo heev rau cov laj thawj hauv qab no:
- siv hauv cov khoom siv hluav taws xob;
- ua haujlwm zoo hauv ntawv rwb thaiv tsev nrog rau thaum siv polishes;
- suav nrog hauv kev sib xyaw ntawm cov cuab yeej siv hauv lub neej txhua hnub;
- ua haujlwm zoo hauv kev tsim cov qauv siv quav ciab;
- Kev tsim cov ntawv luam tawm, nrog rau cov xim xim masterbatches, tsis tuaj yeem ua yam tsis muaj kev siv cov khoom siv tsis-oxidized polyethylene wax HD.
Qhov no tsis yog ib daim ntawv teev tag nrho ntawm thaj chaw uas tsis yog-oxidized muaj pes tsawg leeg ntawm cov khoom hluavtaws siv tau zoo.
Yog tias peb tham txog cov peev txheej ntawm cov khoom siv oxidized, ces nws tseem ceeb heevtsawg.
- nyob rau hauv kev thov hauv kev lag luam khoom noj rau nws cov khoom glazing;
- feem ntau siv los ua cov khoom siv thaum xav tau cov khoom siv yas thiab PVC;
- tuaj yeem siv los ua cov txheej txheem uas yuav muaj dej zoo;
- nquag siv los ua cov roj nplaum sab nraud;
- Qhov kawg vector ntawm daim ntawv thov yog tsim cov khoom raws li PVC.
Leej twg ua cov khoom siv hluavtaws?
Hnub no, kev tsim cov khoom siv polyethylene wax tau tsim zoo heev hauv Belarus, qhov chaw uas lub tuam txhab JSC "Naftan" tau koom nrog. Tsis tas li ntawd, muaj lwm tus neeg xa khoom txawv teb chaws - Asmeskas chaw ua haujlwm ntawm Micro Powder, Inc.
Nws tsim nyog sau cia tias cov tshuaj no yog cov khoom siv polymer, uas yog siv dav tshaj plaws hauv lub neej txhua hnub thiab hauv kev lag luam. Qhov teeb meem tseem ceeb ntawm cov khoom siv no yog nws cov txheej txheem, vim nws nyuaj heev rau decompose. Txhawm rau muab cov khoom siv raw rau cov txheej txheem thev naus laus zis thib ob thiab npaj rau kev siv hauv tsev, nws yog qhov yuav tsum tau ua haujlwm ua ntej. Rau qhov no, siv ib txoj kev siv tshuab lossis physico-chemical.
Kev ua haujlwm
Vim cov khoom siv no yog hluavtaws, nws yuav tsum tau ntxuav ua ntej. Niaj hnub no nws yog nqa tawm nrog kev pab ntawm kev sib cais. Raws li rau txoj kev physicochemical ntawm kev npaj rau kev ua, nws yog qhov nyuaj rau kev siv. Tab sis yog nws tseemnqa tawm, yog li ntawd nws yuav ua tau kom tau txais cov khoom zoo heev ntawm cov khoom thib ob. Tam sim no koj paub tias cov khoom siv hluavtaws yog dab tsi.
Pom zoo:
Cov khoom ib puag ncig ntawm zaub mov. Cov kev cai rau cov khoom nyob ib puag ncig ntawm cov khoom nyob rau hauv pej xeem catering thiab nyob rau hauv lub khw
Cov neeg ua haujlwm ntawm ib lub lag luam ncaj qha ntsig txog cov khoom noj khoom haus yuav tsum ua raws li cov cai ntawm cov khoom hauv zej zog. Qhov no yuav ua rau kom ntev lub neej txee ntawm cov khoom thiab tsis lwj nws qhov zoo. Tom qab tag nrho, ob peb tus neeg yuav zoo siab thaum lawv yuav ib lub ncuav mog qab zib nyob rau hauv ib lub khw muag khoom uas muaj ntxhiab tsw ntawm cov hnyuv ntxwm los yog herring
Txoj cai ntawm cov khoom lag luam ntawm cov khoom siv emission. Kev txiav txim ntawm cov khoom muag thiab qhov muaj pes tsawg leeg ntawm cov khoom muag commission
Cov khoom pov tseg pov tseg rau hauv cov huab cua yog txheej txheej ntawm cov dej num uas ua los ntawm cov neeg siv xwm txheej, suav nrog kev tsim cov ntaub ntawv ntawm cov pa phem, kev txheeb xyuas lawv qhov chaw, kev txiav txim siab ntawm cov paib ntsuas. Nyeem ntxiv txog yuav ua li cas cov txheej txheem no mus thiab yuav ua li cas cov khoom lag luam ntawm emissions tau sau rau hauv, nyeem rau
Yam koj yuav tsum tau ua haujlwm hauv tsheb tavxij: cov ntaub ntawv tsim nyog thiab cov cai, cov cai thiab kev cai lij choj. Cov lus teb thiab cov lus qhia los ntawm cov neeg tsav tsheb tavxij, cov neeg siv khoom thiab cov neeg xa khoom
Raws li ntau tus neeg caij tsheb, txoj haujlwm ntawm tus tsav tsheb tavxij yog qhov yooj yim tshaj plaws. Koj zaum, mloog suab paj nruag zoo nkauj thiab tsav tsheb rov qab los. Thiab lawv muab nyiaj rau koj. Tab sis qhov no tsuas yog sab nraud ntawm lub npib. Qhov rov qab yog ntau dua rosy. Peb yuav tham txog nws hauv kab lus no. Thiab peb tseem yuav qhia txog yam koj xav tau ua haujlwm hauv tsheb tavxij
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Qhov Rooj "Verda": kev tshuaj xyuas cov neeg siv khoom, cov qauv kab, cov khoom zoo thiab cov chaw tsim khoom
Qhov rooj yog qhov tseem ceeb ntawm txhua chav. Lawv siv ob qho tib si los tiv thaiv kev ya raws thiab sab nraum zoov kub, thiab txhawm rau txo qhov chaw sab hauv. Ntawm cov khoom siv hauv tsev, Verda qhov rooj tshwj xeeb yog qhov txawv. Raws li kev txheeb xyuas, qhov zoo ntawm cov khoom ntawm lub tuam txhab no yeej tsis poob siab rau cov neeg siv khoom
