Los ntawm Andy los ntawm Baiyear Hoobkas
Tshaj tawm rau lub Kaum Ib Hlis 2, 2022
Ntawm no yog lub chaw xov xwm ntawm Baiyear txoj kev txhaj tshuaj molding kev lag luam.Tom ntej no, Baiyear yuav faib cov txheej txheem txhaj tshuaj molding rau hauv ob peb nqe lus los qhia txog kev txheeb xyuas cov ntaub ntawv raw ntawm cov txheej txheem txhaj tshuaj molding, vim tias muaj ntau cov ntsiab lus.Tom ntej no yog tsab xov xwm thib tsib.
(10).POM (Saigang)
1. Kev ua haujlwm ntawm POM
POM yog cov yas crystalline, nws cov rigidity zoo heev, feem ntau hu ua "haiv neeg hlau".POM yog cov khoom siv tawv thiab elastic nrog kev nkag siab zoo, kev ruaj ntseg geometric thiab kev cuam tshuam tsis zoo txawm tias qhov kub thiab txias, nws muaj zog tiv thaiv, nkag tsis kam, hnav tsis kam, kub tsis kam thiab lwm yam kev ua haujlwm zoo heev.
POM tsis yooj yim rau nqus dej noo, qhov tshwj xeeb lub ntiajteb txawj nqus yog 1.42g / cm3, thiab lub shrinkage tus nqi yog 2.1% (lub siab crystallinity ntawm POM ua rau nws muaj ib tug heev shrinkage tus nqi, uas yuav siab li 2% ~ 3.5. %, uas yog qhov loj heev.Rau ntau yam khoom siv ntxiv Muaj qhov sib txawv ntawm qhov sib txawv), qhov loj me yog qhov nyuaj rau kev tswj, thiab qhov kub thiab txias distortion yog 172 ° C. POMs muaj nyob rau hauv cov ntaub ntawv homopolymer thiab copolymer.
Homopolymer cov ntaub ntawv muaj cov ductility zoo thiab qaug zog, tab sis tsis yooj yim rau txheej txheem.Cov khoom siv copolymer muaj cov thermal zoo thiab tshuaj lom neeg ruaj khov thiab yooj yim rau kev ua.Cov ntaub ntawv homopolymer thiab cov ntaub ntawv copolymer yog cov ntaub ntawv crystalline thiab tsis yooj yim nqus dej.
2. Cov txheej txheem ntawm POM
POM tsis tas yuav qhuav ua ntej ua, thiab nws yog qhov zoo tshaj rau preheat (kwv yees li 100 ° C) thaum ua, uas yog qhov zoo rau cov khoom seem stability.Kev ua haujlwm kub ntau ntawm POM yog nqaim heev (195-215 ℃), thiab nws yuav decompose yog tias nws nyob hauv lub thoob rau ntev me ntsis lossis qhov kub siab tshaj 220 ℃ (190 ~ 230 ℃ rau homopolymer khoom; 190 ~ 210 ℃ rau cov khoom siv copolymer).Cov ntsia hlau ceev yuav tsum tsis txhob siab dhau, thiab cov seem seem yuav tsum yog me me.
POM cov khoom lag luam poob qis heev (kom txo qis qis qis tom qab molding, pwm tuaj yeem siv tau ntau dua), thiab nws yooj yim rau shrink lossis deform.POM muaj cov cua kub tshwj xeeb thiab pwm kub kub (80-105 ° C), thiab cov khoom kub heev tom qab demolding, yog li nws yog ib qho tsim nyog los tiv thaiv cov ntiv tes los ntawm scalded.Kev txhaj tshuaj siab yog 700 ~ 1200bar, thiab POM yuav tsum tau molded nyob rau hauv tej yam kev mob ntawm nruab nrab siab, nruab nrab ceev thiab siab pwm kub.
Cov neeg khiav thiab cov rooj vag tuaj yeem siv txhua hom rooj vag.Yog tias siv lub qhov rooj qhov rooj, nws yog qhov zoo dua los siv hom luv luv.Kub nozzle runners raug pom zoo rau cov ntaub ntawv homopolymer.Ob leeg sab hauv kub khiav thiab sab nraud kub khiav tuaj yeem siv rau cov khoom siv copolymer.
3. Hom kev thov ntau yam:
POM muaj cov coefficient tsawg heev ntawm kev sib txhuam thiab zoo geometric stability, tshwj xeeb tshaj yog haum rau kev ua cov iav thiab bearings.Txij li nws kuj muaj qhov kub thiab txias tsis kam, nws kuj yog siv rau hauv cov kav dej (pipeline li qub, twj tso kua mis), cov khoom siv nyom, thiab lwm yam.
(11), PC (cov nplaum nplaum nplaum)
1. PC kev ua tau zoo
Polycarbonate yog cov thermoplastic resin uas muaj -[ORO-CO]-txuas hauv cov plaub hau molecular saw.Raws li cov ester sib txawv hauv cov qauv molecular, nws tuaj yeem muab faib ua aliphatic, alicyclic thiab aliphatic-aromatic hom.Tus nqi yog aromatic polycarbonate, thiab bisphenol A hom polycarbonate yog qhov tseem ceeb tshaj plaws, thiab qhov hnyav molecular feem ntau yog 30,000-100,000.
PC yog ib qho amorphous, tsis muaj ntxhiab, tsis muaj tshuaj lom, pob tshab tsis muaj xim lossis xim daj me ntsis thermoplastic engineering yas nrog cov khoom zoo ntawm lub cev thiab txhua yam, tshwj xeeb tshaj yog zoo heev cuam tshuam, siab tensile zog, flexural zog thiab compressive zog;Zoo toughness, zoo tshav kub thiab huab cua tsis kam, yooj yim rau xim, tsis tshua muaj dej nqus.
Lub thermal deformation kub ntawm PC yog 135-143 ° C, nrog me me creep thiab ruaj khov;nws muaj cov cua sov zoo thiab tsis kub tsis kam, thiab muaj cov khoom siv kho tshuab ruaj khov, qhov ruaj khov, cov khoom siv hluav taws xob thiab ua haujlwm nyob rau hauv qhov kub thiab txias.Flammability, tuaj yeem siv tau ntev ntawm -60 ~ 120 ℃;tsis muaj qhov pom tseeb melting point, nws yog molten ntawm 220-230 ℃;vim lub siab rigidity ntawm cov saw molecular, cov resin yaj viscosity yog loj;Cov dej nqus dej yog me me, thiab qhov shrinkage tus nqi me me (feem ntau 0.1% ~ 0.2%), siab qhov tseeb, qhov zoo ntawm qhov ruaj khov, thiab tsis tshua muaj cua permeability ntawm zaj duab xis;nws yog cov khoom siv tua tus kheej;ruaj khov rau lub teeb, tab sis tsis UV-resistant, thiab muaj huab cua tsis zoo;
Roj kuj, acid kuj, muaj zog alkali tsis kam, oxidizing acid, amine, ketone, soluble nyob rau hauv chlorinated hydrocarbons thiab aromatic kuab tshuaj, inhibiting kab mob, nplaim retardant thiab muaj kuab paug kuj, yooj yim ua hydrolysis thiab tawg nyob rau hauv dej ntev, qhov tsis zoo yog hais tias nws yog ib qho yooj yim rau kev ntxhov siab tawg vim kev qaug zog tsis zoo, tsis zoo hnyav tsis kam, tsis muaj dej tsis zoo thiab hnav tsis zoo.PC tuaj yeem txhaj tshuaj molded, extruded, molded, tshuab thermoformed, luam tawm, sib koom ua ke, coated thiab machined, tseem ceeb tshaj plaws txheej txheem yog txhaj molding.
2. Txheej txheem yam ntxwv ntawm PC
Cov khoom siv PC yog rhiab heev rau qhov kub thiab txias, nws cov viscosity yaj poob qis nrog qhov nce ntawm qhov kub thiab txias, ntws nrawm, thiab nws tsis nkag siab rau lub siab.Cov khoom siv PC yuav tsum tau qhuav tag ua ntej ua haujlwm (kwv yees li 120 ℃, 3 ~ 4 teev), thiab cov dej noo yuav tsum tau tswj tsis pub dhau 0.02%.Cov kab ntawm cov dej noo ua tiav ntawm qhov kub thiab txias yuav ua rau cov khoom tsim cov xim dawb turbid, nyiaj xov thiab npuas, thiab PC ntawm chav tsev kub Nws muaj peev xwm ua kom muaj zog elastic deformation ntau heev.Muaj kev cuam tshuam toughness, yog li nws tuaj yeem ua rau txias-nias, txias-draw, txias-dov thiab lwm yam txheej txheem txias txias.
Cov khoom siv PC yuav tsum tau tsim nyob rau hauv cov xwm txheej ntawm cov khoom siv kub, pwm kub thiab kub siab thiab qeeb ceev.Siv kev txhaj tshuaj qis rau cov rooj vag me me thiab kev txhaj tshuaj nrawm rau lwm hom rooj vag.Nws yog qhov zoo dua los tswj cov pwm kub ntawm li 80-110 ° C, thiab molding kub yog 280-320 ° C.Qhov saum npoo ntawm cov khoom PC yog qhov ua rau huab cua tawg, txoj haujlwm nozzle yog nquag rau huab cua streaks, qhov kev ntxhov siab sab hauv yog qhov loj, thiab nws yooj yim tawg.
Yog li ntawd, cov txheej txheem molding ntawm PC cov ntaub ntawv yog qhov siab.Cov khoom siv PC muaj qis qis (0.5%) thiab tsis muaj qhov hloov pauv.Cov khoom tsim los ntawm PC tuaj yeem raug tshem tawm kom tshem tawm lawv cov kev ntxhov siab sab hauv.Qhov hnyav molecular ntawm PC rau extrusion yuav tsum ntau dua 30,000, thiab maj mam compression ntsia hlau yuav tsum tau siv, nrog ib tug ntev-rau-inch ratio ntawm 1:18 ~ 24 thiab compression piv ntawm 1: 2.5.Extrusion tshuab moulding, txhaj-tshuab, txhaj-rub- tshuab moulding tuaj yeem siv.High quality, siab transparency raj mis.
3.Kev siv ntau yam:
Peb qhov kev thov loj ntawm PC yog iav sib dhos kev lag luam, kev lag luam tsheb thiab khoom siv hluav taws xob, kev lag luam hluav taws xob, ua raws li kev lag luam machinery qhov chaw, optical discs, pej xeem khaub ncaws, khoos phis tawj thiab lwm yam khoom siv hauv chaw ua haujlwm, kev kho mob thiab kev noj qab haus huv, zaj duab xis, kev lom zem thiab cov khoom siv tiv thaiv, lwm.
(12).EVA (cov kua nplaum nplaum)
1. EVA kev ua haujlwm:
EVA yog cov yas amorphous, tsis muaj tshuaj lom, nrog lub ntiajteb txawj nqus ntawm 0.95g / cm3 (sib dua li dej).Tus nqi shrinkage yog loj (2%), thiab EVA tuaj yeem siv los ua tus cab kuj ntawm cov xim masterbatch.
2.Cov yam ntxwv ntawm EVA:
EVA muaj qhov kub tsis tshua muaj molding (160-200 ° C), ntau yam, thiab nws cov pwm kub yog qis (20-45 ° C), thiab cov khoom yuav tsum tau qhuav (kub kub 65 ° C) ua ntej ua.Cov pwm kub thiab cov khoom siv kub tsis yooj yim kom siab dhau thaum ua EVA, txwv tsis pub cov nplaim yuav ntxhib (tsis du).EVA cov khoom yog ib qho yooj yim rau lo rau pem hauv ntej pwm, thiab nws yog zoo dua los ua ib tug buckle hom ntawm cov khoom txias qhov qhov ntawm lub ntsiab channel ntawm lub nozzle.Nws yog ib qho yooj yim rau decompose thaum kub tshaj 250 ℃.EVA yuav tsum siv cov txheej txheem ntawm "tsis tshua muaj kub, nruab nrab siab thiab nruab nrab ceev" los ua cov khoom lag luam.
(13), PVC (polyvinyl chloride)
1. Kev ua haujlwm ntawm PVC:
PVC yog cov yas amorphous uas tsis zoo thermal stability thiab muaj kev cuam tshuam rau thermal decomposition (tsis tsim nyog melting kub tsis yuav ua rau cov khoom decomposition teeb meem).PVC yog ib qho nyuaj rau hlawv (zoo nplaim taws), siab viscosity, tsis muaj fluidity, siab zog, huab cua tsis kam thiab zoo heev geometric stability.Hauv kev siv tswv yim, cov ntaub ntawv PVC feem ntau ntxiv cov stabilizers, lubricants, auxiliary processing agents, pigments, impact resistance agents thiab lwm yam additives.
Muaj ntau ntau hom PVC, muab faib ua mos, ib nrab thiab nruj PVC, qhov ceev yog 1.1-1.3g / cm3 (hnyav tshaj dej), qhov shrinkage tus nqi yog loj (1.5-2.5%), thiab tus nqi shrinkage yog tsawg heev, feem ntau 0.2 ~ 0.6%, lub ntsej muag gloss ntawm PVC cov khoom tsis zoo, (Tebchaws Asmeskas tsis ntev los no tau tsim cov pob tshab tawv PVC uas piv rau PC).PVC muaj zog heev rau oxidizing cov neeg ua haujlwm, txo cov neeg ua haujlwm thiab muaj zog acids.Txawm li cas los xij, nws tuaj yeem corroded los ntawm concentrated oxidizing acids xws li concentrated sulfuric acid thiab concentrated nitric acid thiab tsis haum rau kev sib cuag nrog aromatic hydrocarbons thiab chlorinated hydrocarbons.
2. Cov yam ntxwv ntawm PVC:
Piv nrog PVC, kev ua haujlwm kub ntau yog nqaim (160-185 ℃), kev ua haujlwm nyuaj dua, thiab cov txheej txheem yuav tsum muaj siab.Feem ntau, ziab tsis tas yuav tsum tau ua thaum ua haujlwm (yog tias yuav tsum tau ziab, nws yuav tsum tau nqa tawm ntawm 60-70 ℃).Cov pwm kub yog qis (20-50 ℃).
Thaum PVC ua tiav, nws yooj yim los tsim cov kab cua, cov kab dub, thiab lwm yam. Cov txheej txheem kub yuav tsum tau tswj nruj me ntsis (ua haujlwm kub 185 ~ 205 ℃), qhov kev txhaj tshuaj siab tuaj yeem loj li 1500bar, thiab tuav lub siab tuaj yeem ua tau. loj li 1000bar.Txhawm rau kom tsis txhob muaj cov khoom siv degradation, feem ntau Nrog rau qhov sib piv ntawm kev txhaj tshuaj nrawm, cov ntsia hlau ceev yuav tsum qis dua (qis dua 50%), qhov seem seem yuav tsum tsawg dua, thiab lub siab rov qab yuav tsum tsis txhob siab dhau.
Pwm tso tawm zoo dua.Lub sijhawm nyob ntawm cov khoom siv PVC hauv qhov kub siab yuav tsum tsis pub tshaj 15 feeb.Piv nrog PVC, nws yog qhov zoo dua los siv cov khoom siv dej loj rau hauv cov kua nplaum, thiab nws yog qhov zoo dua los siv cov xwm txheej ntawm "qhov nruab nrab siab, qeeb qeeb thiab qis kub" rau molding thiab ua.Piv nrog cov khoom siv PVC, nws yooj yim dua los lo rau pem hauv ntej pwm.Lub pwm qhib ceev (thawj theem) yuav tsum tsis txhob ceev heev.Nws yog qhov zoo dua los ua lub nozzle nyob rau hauv cov khoom txias qhov qhov ntawm tus khiav.Nws yog qhov zoo dua los siv cov khoom siv PS nozzle (lossis PE) cov khoom siv los ntxuav lub thoob kom tsis txhob muaj qhov tawg ntawm PVC los tsim Hd↑, uas ua rau cov ntsia hlau thiab cov phab ntsa sab hauv ntawm lub thoob.Txhua lub rooj vag zoo tuaj yeem siv tau.
Yog tias siv cov khoom me me, nws yog qhov zoo dua los siv lub qhov rooj nkag los yog lub qhov rooj nkag;rau cov tuab tuab, lub rooj vag kiv cua zoo dua.Qhov tsawg kawg nkaus txoj kab uas hla ntawm lub qhov rooj nkag los yog lub qhov rooj nkag yuav tsum yog 1 hli;lub thickness ntawm lub rooj vag kiv cua yuav tsum tsis txhob tsawg tshaj li 1 hli.
3. Hom kev thov ntau yam:
Cov kav dej hauv tsev, cov kav dej hauv tsev, cov phab ntsa hauv tsev, cov tshuab ua lag luam, cov khoom siv hluav taws xob, cov khoom siv kho mob, ntim khoom noj, thiab lwm yam.
Txhawm rau txuas ntxiv, yog tias koj xav paub ntau ntxiv, thov koj xav tiv tauj peb.Baiyear yog lub koom haum loj loj ua ke nrog cov yas pwm tsim, txhaj tshuaj molding thiab cov ntawv hlau ua.Lossis koj tuaj yeem ua tib zoo mloog mus rau lub chaw xov xwm ntawm peb lub vev xaib official: www.baidasy.com , peb tseem yuav hloov kho cov xov xwm kev paub txog kev txhaj tshuaj molding kev lag luam.
Hu rau: Andy Yang
Dab tsi yog app: +86 13968705428
Email: Andy@baidasy.com
Post lub sij hawm: Nov-29-2022
