Txawm hais tias plastics muaj ntau yam khoom zoo, tsis yog txhua hom yas tuaj yeem muaj tag nrho cov khoom zoo.Cov ntaub ntawv engineers thiab industrial designers yuav tsum nkag siab txog cov khoom ntawm ntau yam plastics thiaj li tsim tau cov khoom yas zoo meej.Cov cuab yeej ntawm cov yas, tuaj yeem muab faib ua cov cuab yeej hauv lub cev, cov cuab yeej cuab tam, cov cuab yeej thermal, cov cuab yeej tshuaj, cov cuab yeej kho qhov muag thiab cov khoom siv hluav taws xob, thiab lwm yam. Engineering plastics xa mus rau cov khoom siv yas siv los ua cov khoom siv los yog cov khoom siv plhaub.Lawv yog cov yas nrog lub zog zoo heev, cuam tshuam tsis kam, kub tsis kam, hardness thiab tiv thaiv kev laus.Kev lag luam Nyij Pooj yuav txhais tau tias "yuav siv tau los ua cov txheej txheem thiab cov khoom siv ntawm cov yas ua haujlwm siab, ua haujlwm kub siab tshaj 100 ℃, feem ntau yog siv hauv kev lag luam".
Hauv qab no peb yuav sau qee yam uas siv tauntsuas ntsuas:
1.Melt Flow Index(MFI):
Siv los ntsuas qhov ntws ntws ntawm MFR tus nqi ntawm ntau yam plastics thiab resins nyob rau hauv viscous flow xeev.Nws yog tsim rau engineering plastics xws li polycarbonate, polyarylsulfone, fluorine plastics, nylon thiab lwm yam nrog kub melting kub.Kuj haum rau polyethylene (PE), polystyrene (PS), polypropylene (PP), ABS resin, polyformaldehyde (POM), polycarbonate (PC) resin thiab lwm yam yas melting kub yog qhov ntsuas qis.Ua tau raws li cov qauv: ISO 1133, ASTM D1238, GB / T3682
Txoj kev sim no yog cia cov khoom yas yaj rau hauv cov kua dej yas hauv ib lub sijhawm (10 feeb), nyob rau hauv qhov kub thiab txias (cov qauv sib txawv rau ntau yam ntaub ntawv), thiab tom qab ntawd ntws tawm los ntawm 2.095mm txoj kab uas hla ntawm tus naj npawb ntawm grams. (g).Qhov ntau dua tus nqi, qhov zoo dua qhov ua tau zoo ntawm cov khoom siv yas, thiab rov ua dua.Cov qauv xeem siv feem ntau yog ASTM D 1238. Cov ntsuas ntsuas rau tus qauv ntsuas no yog Melt Indexer.Cov txheej txheem kev ua haujlwm tshwj xeeb ntawm qhov kev xeem yog: cov khoom siv polymer (yas) yuav tsum tau kuaj yog muab tso rau hauv ib qho me me, thiab qhov kawg ntawm qhov zawj yog txuas nrog lub raj nyias nyias, txoj kab uas hla yog 2.095mm, thiab qhov ntev ntawm cov groove. cev 8mm.Tom qab cua sov rau qee qhov kub, qhov kawg ntawm cov khoom siv raw yog nyem downward los ntawm qee qhov hnyav thov los ntawm lub piston, thiab qhov hnyav ntawm cov khoom siv raw yog ntsuas li ntawm 10 feeb, uas yog qhov ntsuas ntawm cov yas.Qee zaum koj yuav pom tus sawv cev MI25g / 10min, uas txhais tau hais tias 25 grams ntawm cov yas tau extruded hauv 10 feeb.Tus nqi MI ntawm cov khoom siv feem ntau yog nyob nruab nrab ntawm 1 thiab 25. Qhov loj dua MI, qhov me dua qhov viscosity ntawm cov khoom siv yas thiab qhov me me ntawm qhov hnyav molecular;txwv tsis pub, qhov loj dua qhov viscosity ntawm cov yas thiab qhov loj dua qhov hnyav molecular.
2.Universal Tensile Testing Tshuab (UTM)
Universal khoom kuaj tshuab (lub tshuab tensile): kuaj lub tensile, tearing, dabtsi yog khoov thiab lwm yam khoom ntawm cov khoom yas.
Nws tuaj yeem muab faib ua pawg hauv qab no:
1)Tensile zog&Elongation:
Lub zog tensile, tseem hu ua tensile lub zog, hais txog qhov loj ntawm lub zog uas yuav tsum tau ncab cov ntaub ntawv yas rau qee qhov, feem ntau qhia txog lub zog npaum li cas hauv ib cheeb tsam, thiab feem pua ntawm qhov ntev ntawm lub stretch yog elongation.Tensile zog Lub tensile ceev ntawm cov qauv yog feem ntau 5.0 ~ 6.5mm / min.Cov txheej txheem ntsuas kom ntxaws raws li ASTM D638.
2)Flexual zog&Khoov zog:
Bending zog, tseem hu ua flexural zog, feem ntau yog siv los txiav txim siab flexural tsis kam ntawm plastics.Nws tuaj yeem kuaj tau raws li ASTMD790 txoj kev thiab feem ntau qhia hais tias muaj zog npaum li cas hauv ib cheeb tsam.General plastics rau PVC, Melamine resin, epoxy resin thiab polyester dabtsi yog khoov lub zog yog qhov zoo tshaj plaws.Fiberglass kuj tseem siv los txhim kho folding tsis kam ntawm cov yas.Bending elasticity yog hais txog kev khoov kev ntxhov siab uas tsim los ntawm ib chav tsev ntawm deformation nyob rau hauv lub elastic ntau yam thaum tus qauv yog khoov (xeem txoj kev xws li khoov lub zog).Feem ntau, qhov ntau dua qhov khoov elasticity, qhov zoo dua qhov rigidity ntawm cov khoom yas.
3)Compressive zog:
Compression zog yog hais txog lub peev xwm ntawm cov yas los tiv thaiv sab nraud compression quab yuam.Tus nqi xeem tuaj yeem txiav txim siab raws li ASTMD695 txoj kev.Polyacetal, polyester, acrylic, urethral resins thiab meramin resins muaj cov khoom zoo hauv qhov kev hwm no.
3.Cantilever impact testing tshuab/ Simply txhawb nqa beam cuam tshuam kuaj tshuab
Siv rau kev ntsuam xyuas qhov cuam tshuam ntawm cov ntaub ntawv tsis yog xim hlau xws li cov ntawv yas tawv, cov yeeb nkab, cov khoom siv tshwj xeeb, cov nylon reinforced, iav fiber reinforced yas, ceramic, cam khwb cia pob zeb hluav taws xob insulating khoom, thiab lwm yam.
Raws li cov txheej txheem thoob ntiaj teb ISO180-1992 "yas - cov khoom siv tawv tawv cantilever cuam tshuam lub zog txiav txim siab";Lub teb chaws tus qauv GB / T1843-1996 "hard plastic cantilever impact test method", lub tshuab kev lag luam tus qauv JB / T8761-1998 "yas cantilever impact testing machine".
4.Environmental tests: simulating huab cua tsis kam ntawm cov ntaub ntawv.
1) Qhov ntsuas kub tsis tu ncua, qhov ntsuas kub tsis tu ncua thiab cov av noo yog cov khoom siv hluav taws xob, aerospace, tsheb, khoom siv hauv tsev, xim, tshuaj lom neeg kev lag luam, kev tshawb fawb hauv cheeb tsam xws li kev ruaj ntseg ntawm qhov ntsuas kub thiab av noo ntsuas cov cuab yeej, tsim nyog rau kev lag luam qhov chaw, thawj qhov chaw, cov khoom lag luam ib nrab tiav, hluav taws xob, hluav taws xob thiab lwm yam khoom, cov khoom siv thiab cov khoom siv rau qhov kub thiab txias, tsis tshua muaj kub, txias, ntub dej thiab kub degree lossis qhov ntsuas kub thiab av noo ib puag ncig.
2) Precision aging test box, UV aging test box (ultraviolet light), high and low temperature test box,
3) Programmable Thermal Shock Tester
4) Lub tshuab ntsuas cua txias thiab kub yog cov khoom siv hluav taws xob thiab hluav taws xob, aviation, tsheb, khoom siv hauv tsev, txheej txheej, tshuaj lom neeg kev lag luam, kev lag luam tiv thaiv lub teb chaws, kev lag luam tub rog, kev tshawb fawb tshawb fawb thiab lwm yam khoom tsim nyog rau kev sim, Nws yog qhov tsim nyog rau kev hloov pauv ntawm lub cev. cov khoom thiab cov ntaub ntawv ntawm lwm yam khoom xws li photoelectric, semiconductor, electronics-related qhov chaw, tsheb qhov chaw thiab lub computer muaj feem xyuam rau kev lag luam los ntsuam xyuas qhov rov ua hauj lwm ntawm cov ntaub ntawv mus rau qhov kub thiab txias thiab cov tshuaj hloov los yog lub cev puas tsuaj ntawm cov khoom thaum lub sij hawm thermal expansion thiab txias contraction. .
5) Kub thiab tsis kub alternating xeem chamber
6) Xenon-lamp Weather Resistance Test Chamber
7) HDT VICAT Tester
Post lub sij hawm: Jun-10-2021