PP (polypropylene) txhaj tshuaj molding yog txheej txheem tsim khoom uas cov yas PP yog txhaj rau hauv pwm los tsim cov duab uas xav tau. Nws yog ntau yam thiab raug nqi - txoj kev ua tau zoo rau kev tsim ntau yam khoom, los ntawm cov khoom siv tsheb mus rau cov khoom hauv tsev. PP cov tshuaj zoo thiab cuam tshuam tsis kam, nrog rau nws cov khoom siv rov ua dua tshiab, ua rau nws muaj kev xaiv nrov rau ntau daim ntawv thov.
PP yog dab tsi?
Polypropylene, abbreviated li PP, yog ib tug polymer ua los ntawm propylene los ntawm cov tshuaj tiv thaiv polymerization. Nws yog cov khoom siv thermoplastic nrog kev ua haujlwm zoo, thiab tsis muaj xim, semi-pob tshab thermoplastic lub teeb hnyav dav dav- lub hom phiaj yas.
Nws yog xim tsis muaj xim, semi-pob tshab thermoplastic lub teeb yuag dav dav- lub hom phiaj yas. Polypropylene pellets feem ntau yog yaj thiab txhaj tshuaj- molded, thiab yog siv dav hauv cov khoom yas, ntim khoom, thiab cov khoom siv tsheb.
Polypropylene yas yam ntxwv
1.Chemical Resistance: PP Yas tsis nkag siab nrog cov hauv paus dilute thiab acids, uas ua rau nws zoo tagnrho rau kev tsim cov ntim cov tshuaj ntxuav, ua ntej - cov khoom pab, thiab lwm yam.
2.Elasticity thiab Toughness: PP yas ua nrog elasticity tshaj ib tug ntau yam ntawm deflection tab sis nws kuj tau ntsib yas deformation thaum ntxov ntawm lub deformation uas yog vim li cas nws yog feem ntau suav hais tias yog ib tug 'tawv' khoom nyob rau hauv kev lag luam tsim.
3.Fatigue Resistance: Polypropylene yas yog qaug zog -tiv taus raws li nws nyiam khaws nws cov duab txawm, tom qab khaus torsions thiab flexings.
4.Insulation: PP muaj txiaj ntsig zoo rau kev tsim cov khoom siv hluav taws xob vim nws muaj kev tiv thaiv hluav taws xob ntau heev. Nws yog li no, cov yas nrov heev rau kev tsim khoom hauv kev lag luam hluav taws xob.
5.Transmissivity: Polypropylene yas tuaj yeem ua pob tshab lossis opaque yog li, nws tuaj yeem siv rau ntau yam kev siv.
Qhov zoo ntawm PP yas
1.PP yas yog ib yam khoom pheej yig
2.Nws yog ib nrab -crystalline nyob rau hauv qhov uas yog vim li cas nws muaj siab flexural zog.
3.Nws yog resistant rau ya raws, muaj ib tug tsawg coefficient ntawm kev sib txhuam, muaj zoo qaug zog tsis kam thiab muaj ib tug zoo heev cuam tshuam lub zog.
4.PP yas nthuav tawm zoo tiv thaiv cov tshuaj thiab hluav taws xob.
5.Nws yooj yim kho los ntawm kev puas tsuaj
PP Txhaj Moulding yog dab tsi?
PP txhaj tshuaj molding yog ib qho thermoplastic ntxiv polymer tsim los ntawm kev sib txuas ob peb propylene monomers. Nws nta ntau yam kev siv xws li ntim cov khoom siv thiab cov khoom yas molded rau kev lag luam tsheb uas xav tau pib pwm. Txij li thaum nws nto yog nplua, nws tuaj yeem hloov cov yas zoo li polyacetal (POM) hauv qee qhov qis - kev sib txhuam.
Cov kauj ruam koom nrog hauv PP Txhaj Moulding Txheej Txheem
Pub
Plastic pellets yog nkag mus rau hauv lub hopper thiab tom qab ntawd mus rau hauv lub thoob.
txhaj tshuaj molding txheej txheem
Plasticization
Lub spinning ntsia hlau nyob rau hauv lub chim txav lub pellet rau pem hauv ntej. Cov yas pellets yog warmed los ntawm cov cua sov band encircling lub chim. Lub rotating ntsia hlau propels cov pellets rau pem hauv ntej, melting lawv nce mus txog rau thaum lawv yog kiag li molten thaum lawv mus txog rau pem hauv ntej ntawm lub thoob.Nws yuav tsum yaj kom nws ua li ntawd.
Txhaj tshuaj
Thaum muaj qhov txaus ntawm cov yas molten tam sim no nyob rau hauv pem hauv ntej ntawm cov ntsia hlau, cov ntsia hlau qhia nws los ntawm cov pwm lub sprue thiab khiav mus rau hauv pwm kab noj hniav.
Siab tuav
Cov ntsia hlau yuav tas li yuam cov yas molten rau hauv pwm hloov. Cov yas molten cog lus hauv pwm thaum nws txias kom txog thaum nws hloov pauv mus rau hauv cov khoom tsim tiav. Txhawm rau kom cov pwm kub nyob rau hauv qhov kev npaj, cov pwm kub tswj tau txhaj dej los yog roj rau hauv qhov txias txias.
Txias
Raws li cov yas molten txias, nws hloov mus rau hauv cov khoom hauv ob peb feeb xwb.
Tshem tawm
Lub ejector pas nrig thawb rau pem hauv ntej lub ejector pins thaum lub pwm qhib. Cov khoom thiab cov neeg khiav dej num raug muab tso rau sab nraud thiab sau rau hauv ib lub thawv. Cov txheej txheem yog tom qab ntawd rov ua ntau zaus los ua cov khoom yas ntau dua.
Cov rooj vag thiab cov neeg khiav dej num rau PP txhaj tshuaj molding txheej txheem
Ib kauj ruam tseem ceeb hauv kev txhaj tshuaj PP yog siv cov rooj vag thiab cov neeg khiav dej num. Lub qhov rooj nkag mus rau hauv lub pwm kab noj hniav yog nyob rau ntawm tus khiav qhov kawg. Qhov seem muaj qhov tsis zoo ntawm qhov chaw los ntawm lub rooj vag. Vim nws qhov me me, nws yog npaj kom khov ua ntej qhov chaw, khiav, lossis sprue khov. Txhawm rau tiv thaiv cov cim hauv lub dab dej (qhov chaw so) thaum lub caij txias, cov kab noj hniav yog khaws cia.
Cov xwm txheej ntawm PP Txhaj Moulding txheej txheem
|
DRY |
Tsis tsim nyog thaum khaws cia. |
|
LUB TSEV |
220-280 degrees Celsius lossis 428-536 degrees Fahrenheit. |
|
Mould kub |
20-80 degrees Celsius lossis 68-176 degrees Fahrenheit. |
|
HEAT DEFLECTION TEMPERATURE (HDT) |
100 ° C (212 Fahrenheit) ntawm 0.46 MPa |
|
Txhaj Mould TEMPERATURE |
32-66 degrees Celsius lossis 90-150 degrees Fahrenheit |
|
TENSILE HEEV |
32 MPa |
|
FLEXURAL zog |
41 MPa |
|
TSEEM CEEB |
0.91 |
|
Plastic Txhaj Moulding Pressure |
Siab li 180 MPa |
|
SHRINK RATE |
1.5-2.0% (.015-.02 hauv / hauv) |
Qhov zoo ntawm PP Txhaj Moulding
Tsawg Coefficient ntawm kev sib txhuam
Polypropylene tsis tshua muaj coefficient ntawm kev sib txhuam yooj yim rau kev tso tawm ntawm txhaj molded qhov chaw los ntawm cov cuab yeej, uas yuav pab kom ceev lub sij hawm voj voog thiab txo tag nrho cov nqi.
Fatigue Resistance
Nrog rau kev qaug zog zoo heev, polypropylene feem ntau yog siv thaum lub pob khawm nyob, ib feem ntawm kev txhawb nqa khoov, yuav tsum tau ua. Thaum tsim kom zoo, lub pob khawm polypropylene muaj peev xwm tiv taus ntau tshaj li ib lab lub voj voog ua ntej tsis ua haujlwm, txawm tias cov khoom siv ntxiv yuav txo tau cov polypropylene qhov qaug zog.
Tus nqi qis
Tom qab polyethylene, polypropylene yog cov khoom siv dav tshaj plaws, yog li pheej yig dua piv rau lwm hom thermoplastics.
Moisture Resistance
Polypropylene muaj cov dej noo zoo heev thiab yuav nqus dej tsawg dua 0.01% hauv 24- teev. Qhov no ua rau nws yog ib qho kev xaiv zoo rau kev ntim khoom noj thiab dej haus. Polypropylene's noo noo kuj txhais tau hais tias nws feem ntau tsis tas yuav qhuav ua ntej txhaj tshuaj molding - yog tias muab ntxiv, txawm li cas los xij, yuav tsum tau ziab.
Tsawg Melt Viscosity
Cov yas uas muaj cov viscosity tsawg, xws li polypropylene, yooj yim rau kev txhaj tshuaj pwm thiab tuaj yeem sau cov pwm sai dua, yog li txo lub sijhawm voj voog thiab cov nqi. Polypropylene tsis tshua muaj viscosity kuj ua rau nws yooj yim rau pwm nyias xws li cov pob khawm nyob.
Tshuaj tiv thaiv
Polypropylene tsis yog tshuaj tiv thaiv zoo li polyethylene, tab sis nws tseem tiv taus ntau yam tshuaj, suav nrog cov rog, cov kuab tshuaj organic, thiab qee yam tsis yog -oxidizing acids. Polypropylene muaj qhov tsis zoo rau chromic acid thiab aromatic hydrocarbons, txawm li cas los xij.
Kev siv ntawm PP molded yas qhov chaw
Kev lag luam zaub mov
PP yas nyob rau hauv nws lub hnab ntim tau yooj yim yog pob tshab thiab feem ntau siv los ua cov ntim yas.
Rigid ntim yog thicker thiab opaque. Nws yog feem ntau siv hauv kev lag luam khoom noj los tsim ntau hom khoom siv xws li phaj, khob, fwj, lauj kaub, thiab lwm yam.
Cov khoom siv kho mob
PP Yas tuaj yeem siv rau ntau yam kev kho mob. PP feem ntau tiv taus cov tshuaj muaj zog thiab ua kom tsis muaj menyuam uas ua rau nws zoo tagnrho rau kev tsim khoom siv kho mob. Nws feem ntau yog siv los tsim petri- tais diav, koob txhaj tshuaj, lub raj mis, lub lauj kaub, vials, thiab cov tshuaj tua kab mob.
Automotive Parts
Polypropylene yas yog pheej yig thiab yooj yim rau pwm, thiab yog li, nrov heev siv los tsim cov khoom yas rau kev lag luam tsheb. Cov khoom siv hauv tsheb no tuaj yeem muaj los ntawm cov tsheb roj teeb, dashboards, thiab cov cuab yeej ntsuas mus rau qhov rooj trims, thiab ntau dua. Lwm cov khoom siv rau cov khoom siv tsheb, yog POM (Polyoxymethylene).
Cov khoom siv
Polypropylene yog nrov heev rau kev tsim khoom ntawm cov neeg siv khoom. Txij li thaum PP yas yog ruaj khov thiab tiv taus qhov kub thiab txias, nws yog ib qho khoom siv zoo tshaj plaws rau chav ua noj thiab cov khoom siv hauv tsev xws li tshuab ntxhua khaub ncaws thiab kas fes. Sib nrug los ntawm cov khoom siv hauv tsev thiab chav ua noj, PP yas kuj tuaj yeem siv los tsim cov khoom ua si, rooj tog zaum, ntaub pua plag, thiab lev, rau lwm yam khoom siv. PP khoom los ntawm cov neeg siv khoom lag luam yog qhov yooj yim tshaj plaws paub txog hauv koj lub neej txhua hnub.
DINGYUE muaj lub ntiaj teb kev tsim khoom lag luam thiab cov kws tshaj lij tsim khoom koj xav tau kom tau txais kev txhaj tshuaj molded qhov zoo, txawm li cas los xij koj cov qauv tsim. Thiab peb muaj kev txawj ntse thiab paub txog -yuav ua li cas txhawb koj los ntawm ib feem tsim los ntawm kev tsim qauv thiab tsim khoom.
Cim npe nrov: pp yas txhaj tshuaj molding, Tuam Tshoj pp yas txhaj tshuaj molding manufacturers, lwm tus neeg, Hoobkas
