Ngakhale mapulasitiki ali ndi zinthu zambiri zabwino, si mapulasitiki amtundu uliwonse omwe angakhale ndi zinthu zabwino zonse. Akatswiri opanga zida ndi opanga mafakitale ayenera kumvetsetsa zomwe mapulasitiki osiyanasiyana amapangidwira kuti apange zinthu zabwino kwambiri zamapulasitiki. Katundu wa pulasitiki, akhoza kugawidwa mu zinthu zofunika thupi, katundu makina, katundu matenthedwe, katundu mankhwala, katundu kuwala ndi magetsi katundu, etc. Engineering mapulasitiki amatanthawuza mapulasitiki mafakitale ntchito mbali mafakitale kapena zipangizo zipolopolo. Ndi mapulasitiki okhala ndi mphamvu zabwino kwambiri, kukana kukhudzidwa, kukana kutentha, kuuma komanso anti-kukalamba katundu. Makampani aku Japan adzatanthauzira kuti "atha kugwiritsidwa ntchito ngati zida zamapulasitiki komanso zamakina apamwamba kwambiri, kukana kutentha pamwamba pa 100 ℃, zomwe zimagwiritsidwa ntchito makamaka m'makampani".
Pansipa tilemba zina zomwe zimagwiritsidwa ntchito kwambirizida zoyesera:
1.Melt Flow Index(MFI):
Amagwiritsidwa ntchito kuyeza kuchuluka kwa kusungunuka kwa MFR kwa mapulasitiki osiyanasiyana ndi ma resin mu viscous flow state. Ndi oyenera mapulasitiki engineering monga polycarbonate, polyarylsulfone, fluorine mapulasitiki, nayiloni ndi zina zotero ndi kutentha kwambiri kusungunuka. Komanso oyenera polyethylene (PE), polystyrene (PS), polypropylene (PP), ABS utomoni, polyformaldehyde (POM), polycarbonate (PC) utomoni ndi zina pulasitiki kusungunuka kutentha ndi otsika mayeso. Kukwaniritsa miyezo: ISO 1133, ASTM D1238,GB/T3682
Njira yoyesera ndikulola kuti tinthu tating'onoting'ono tapulasitiki tisungunuke mumadzimadzi apulasitiki mkati mwa nthawi inayake (mphindi 10), pansi pa kutentha ndi kupanikizika kwina (miyezo yosiyana yazinthu zosiyanasiyana), kenako ndikutuluka kudzera mu mainchesi a 2.095mm a kuchuluka kwa magalamu (g). Kuchuluka kwa mtengo, kumapangitsanso kuti pulasitiki ikhale yabwino, komanso mosinthanitsa. Mayeso omwe amagwiritsidwa ntchito kwambiri ndi ASTM D 1238. Chida choyezera cha muyezo woyesererawu ndi Melt Indexer. Njira yeniyeni yogwiritsira ntchito mayeso ndi: zinthu za polima (pulasitiki) zomwe ziyenera kuyesedwa zimayikidwa mumtsinje waung'ono, ndipo mapeto a poyambira amagwirizanitsidwa ndi chubu chochepa kwambiri, chomwe chili ndi 2.095mm, ndipo kutalika kwa chubu ndi 8mm. Pambuyo pa kutentha kwa kutentha kwina, mapeto apamwamba a zopangira amatsitsidwa pansi ndi kulemera kwake komwe kumagwiritsidwa ntchito ndi pisitoni, ndipo kulemera kwa zopangira kumayesedwa mkati mwa mphindi 10, yomwe ndi ndondomeko yothamanga ya pulasitiki. Nthawi zina mudzawona choyimira MI25g / 10min, zomwe zikutanthauza kuti 25 magalamu apulasitiki atulutsidwa mu mphindi 10. Mtengo wa MI wa mapulasitiki omwe amagwiritsidwa ntchito kawirikawiri ndi pakati pa 1 ndi 25. Kukula kwa MI, kung'onozing'ono kwa ma viscosity a pulasitiki yaiwisi yaiwisi ndi kung'onozing'ono kwa molekyulu; apo ayi, kukulirakulira kwa mamasukidwe apulasitiki ndi kukula kwa maselo.
2. Universal Tensile Testing Machine (UTM)
Makina oyesera a Universal (makina omangika): kuyesa mphamvu, kung'amba, kupindika ndi zida zina zamakina apulasitiki.
Ikhoza kugawidwa m'magulu otsatirawa:
1)Kulimba kwamakokedwe&Elongation:
Kulimba kwamphamvu, komwe kumadziwikanso kuti kulimba kwamphamvu, kumatanthawuza kukula kwa mphamvu yofunikira kutambasula zida zapulasitiki kumlingo wakutiwakuti, zomwe nthawi zambiri zimafotokozedwa molingana ndi kuchuluka kwa mphamvu pagawo lililonse, ndipo kuchuluka kwa kutalika kwake ndi kutalika. Kuthamanga kwamphamvu Kuthamanga kwachitsanzo nthawi zambiri kumakhala 5.0 ~ 6.5mm / min. Njira yoyesera mwatsatanetsatane malinga ndi ASTM D638.
2)Flexual mphamvu&Mphamvu yopindika:
Mphamvu yopindika, yomwe imadziwikanso kuti flexural mphamvu, imagwiritsidwa ntchito makamaka kudziwa kukana kwa mapulasitiki. Itha kuyesedwa motsatira njira ya ASTMD790 ndipo nthawi zambiri imawonetsedwa ndi kuchuluka kwa mphamvu pagawo lililonse. Mapulasitiki a PVC, utomoni wa Melamine, utomoni wa epoxy ndi mphamvu yopindika ya poliyesitala ndi yabwino kwambiri. Fiberglass imagwiritsidwanso ntchito kupititsa patsogolo kukana kwa mapulasitiki. Kupindika kumatanthawuza kupsinjika kopindika komwe kumapangidwa pamlingo wopindika pagawo lililonse la zotanuka pamene chitsanzo chapindika (njira yoyesera monga mphamvu yopindika). Nthawi zambiri, kupindika kwakukulu kopindika, kumapangitsa kuti pulasitiki ikhale yabwino.
3)Compressive mphamvu:
Mphamvu yopondereza imatanthawuza kuthekera kwa mapulasitiki kupirira mphamvu yakunja. Mtengo woyeserera ukhoza kutsimikiziridwa molingana ndi njira ya ASTMD695. Polyacetal, polyester, acrylic, urethral resins ndi meramin resins ali ndi zabwino kwambiri pankhaniyi.
3.Makina oyesera a Cantilever impact/ Skutanthauza makina oyesera amtundu wothandizidwa
Amagwiritsidwa ntchito poyesa kulimba kwa zinthu zomwe sizinali zitsulo monga pulasitiki yolimba, chitoliro, zinthu zooneka ngati zapadera, nayiloni yolimbikitsidwa, pulasitiki yolimba yagalasi, ceramic, miyala yamagetsi yopangira magetsi, etc.
Mogwirizana ndi muyezo wapadziko lonse lapansi wa ISO180-1992 "Pulasitiki - kutsimikiza kwamphamvu kwamphamvu"; The national standard GB/ T1843-1996 "hard pulasitiki cantilever impact test method", the mechanical industry standard JB/ T8761-1998 "pulasitiki cantilever impact test method".
Mayeso a 4.Environmental: kuyerekezera kukana kwa nyengo kwa zipangizo.
1) Chofungatira kutentha nthawi zonse, kutentha kosalekeza ndi makina oyesera chinyezi ndi zida zamagetsi, zakuthambo, magalimoto, zida zapakhomo, utoto, makampani opanga mankhwala, kafukufuku wasayansi m'malo monga kukhazikika kwa kutentha ndi kudalirika kwa zida zoyezetsa chinyezi, zofunikira pazigawo zamakampani, magawo oyambira, zinthu zomalizidwa, magetsi, zamagetsi ndi zinthu zina, magawo ndi zinthu zina, kutentha kwapang'onopang'ono ndi kuzizira kosalekeza, magawo ndi zinthu zina, kutentha kwapang'onopang'ono ndi kuzizira kosalekeza, magawo ndi zida zoyesera kutentha, kutentha ndi kuzizira, kutentha kwambiri ndi zinthu zina. Chinyezi chilengedwe mayeso.
2) Bokosi loyesa kukalamba molondola, bokosi loyesa kukalamba la UV (kuwala kwa ultraviolet), bokosi loyesera lapamwamba komanso lotsika,
3) Programmable Thermal Shock Tester
4) Kuzizira ndi kutentha kwambiri kuyezetsa makina ndi zida zamagetsi ndi magetsi, ndege, magalimoto, zipangizo kunyumba, zokutira, makampani mankhwala, chitetezo dziko, makampani ankhondo, kafukufuku wasayansi ndi madera ena zofunika zida mayeso, Ndi oyenera kusintha kwa thupi la mbali ndi zipangizo za zinthu zina monga photoelectric, semiconductor, zamagetsi zokhudzana ndi mbali zamagetsi, kukana kwa magalimoto otsika ndi kukana mobwerezabwereza kutentha kwa makompyuta ndi zipangizo zamakina otsika ndi makompyuta okhudzana ndi kutentha ndi kutentha. kusintha kapena kuwonongeka kwakuthupi kwa zinthu pakukula kwamafuta ndi kuzizira kozizira.
5) Chipinda choyesera chokwera komanso chotsika kutentha
6) Xenon-lamp Weather Resistance Test Chamber
7)HDT VICAT TESTER
Nthawi yotumiza: Jun-10-2021