High-density polyethylene (HDPE) sɛbɛn bɛ baara kɛ kosɛbɛ kemikɛli, jɔli ani masinw dilanni baarakɛyɔrɔw la k’a sababu kɛ a ka kemikaliya sabatili ɲuman ye, a sɛgɛnbaliya, ani a jogo nɔgɔmanw. Nka, baarakɛcogo danfaralenw bɛ danfaraba jira fɛnw baarakɛcogo wajibiyalenw na HDPE sɛbɛn na, o b’a to fɛnw sugandili bɛnnenw nafa ka bon kosɛbɛ walasa ka porozew ka ɲumanya n’u ka ɲɛnamaya jan sabati. Nin barokun in bɛ HDPE Sheet Material Selection Strategies sɛgɛsɛgɛ cogo labɛnnen na ka bɔ hakilina saba la: fɛnw nafa jɔnjɔnw, baarakɛcogo jɔnjɔnw, ani baarakɛcogo misaliw.
HDPE fɛnw ka nafolo jɔnjɔnw ani u danfara sariyaw .
HDPE ye poliyetilɛni resin ye min bɛ kɛ ni kristalɛ ye kosɛbɛ, a ka cakɛda molekiyɔmuw falen don ani a ka ca a la, a bɛ daminɛ 0,941 na ka se 0,965 g/cm3 ma. Ka da danfara kan fɛn dilanni taabolo la, HDPE sɛbɛn minnu bɛ sɔrɔ sugu la, olu bɛ se ka tila ka kɛ fɛn ye min bɛ bɔ kɛnɛ kan ani min bɛ se ka degun-Sugu caman na. Fɔlɔ bɛ fɛn dɔ di min ka bon ni a bonya ye (tolerance ±0.5mm) wa a bɛnnen don ka kɛ minɛnw ye minnu bɛ kɛ ka fɛnw kɛ ka ɲɛ. O laban in bɛ fanga caman di impact strength (notched impact strength ka bon walima ka bɛn 20 kJ/m2 ma) wa a bɛnnen don applications ma minnu bɛ doni girinmanw na.
Baarakɛcogo jɔnjɔn siratigɛ la, High{0}}Quality HDPE sɛbɛn ka kan ka nin taamasiyɛn kolomaw dafa:
1. Furakɛli : A bɛ se ka kɛ asidi barikamaw ye i n’a fɔ asidi sulfuriki ni asidi azotiki hakɛ minnu bɛ 80% duguma, ka fara fɛnɲɛnamafagalanw kan minnu bɛ sɔrɔ tuma caman.
2. Lamini degunw ka kari: No crack growth kɔfɛ sutura furaji la ni degere 50 ye sanga 24 kɔnɔ.
3. Funteni funteni hakɛ : a tɛ dɔgɔya ni degere 50 ye doni 1,8 MPa kɔnɔ, o bɛ kɛ sababu ye ka hakɛ sabatili sabati baarakɛcogo la min bɛ kɛ cogo la min bɛ bɛn.
Sugandili basigilen ka ɲɛsin baarakɛcogo jɔnjɔnw ma .
(1) Mekanikiw ka nafolomafɛnw bɛnkan sariya .
Baara minnu bɛ kɛ ni doni girinmanw ye walima ni u bɛ to ka ɲɔgɔn sɔgɔsɔgɔ (i n’a fɔ minɛnko minɛnw), fɛnw sɛgɛnbaliya ye fɛn fɔlɔ ye. Ni aw ye 2%-5% ultra-poliyetilɛni girinya hakɛ caman (UHMWPE) fara a kan, sɛbɛn sɛgɛn bɛ se ka dɔgɔya ka se 0,08-0,12 cm Walasa ka dɛmɛ don sigidaw la (i n’a fɔ waati kuntaala surun kɔlɔsili), gɛlɛyabaw hakɛ minnu fanga ka bon walima minnu bɛ bɛn 25 MPa ma ani modulu elastiki min ka bon walima min bɛ bɛn 800 MPa ma, olu ka kan ka sugandi.
(2) Lamini ladamuni yiriwali fɛɛrɛw .
Long-Kɛnɛya baara la, UV kɔrɔya ye dɛsɛ cogo fɔlɔ ye. HDPE sɛbɛnw b’u sɛmɛntiya ni 2%-3% karɔbɔni nɛrɛma hakɛ ye, olu bɛ se ka waati kɛcogo ɲɛ ni siɲɛ 3-5 ye (Quv Accelerated Aging Tests bɛ Δe kulɛri danfara jira .<3 after 500 hours). For applications involving contact with food or pharmaceutical media, sanitary-grade resins that comply with FDA 21 CFR 177.1520 must be selected to ensure heavy metal migration is less than 0.1 ppm.
(3) Baarakɛcogo bɛnkan .
Ni aw bɛ sɛbɛnw fara ɲɔgɔn kan ni funteni welding ye, a ka ɲi ka Medium- ka se dɔgɔya-jibɔ hakɛ ma ni melt flow rate (MFR) ye min ye 0,1-0.3 g/10 min ye. O bɛ kɛ sababu ye ka joli fanga wel (sɔgɔli fanga) ka tɛmɛ walima ka bɛn 85% ma bangebagaw ka fɛn na) ka sɔrɔ ka i yɛrɛ tanga welda sɔgɔli ma min bɛ sɔrɔ jimafɛnw caya kojugu fɛ. CNC tigɛcogo la, a bɛ fɔ ko free-cutting grade ni MFR > 0,5 g/10 min bɛ kɛ ka baarakɛminɛnw sɛgɛncogo dɔgɔya kosɛbɛ.
Material Solutions ka ɲɛsin baarakɛcogo misaliw ma .
(1) Kimikɛ ka fɛnɲɛnamafagalanw lakanani .
Ni aw bɛ se ka jibolisiraw da, minnu bɛ sɔrɔ fɛnɲɛnamafagalanw na i n’a fɔ asidi klorokini ani hidrɔkisidi sodiyɔmu, 15% Glass Fibre Reinforced HDPE composite fɛn dɔ ka ɲi. A ka kamalenninw ka modulu bɛ se ka se 1200 MPa ma ka sɔrɔ ka kemikaliya kunbɛncogo ɲuman mara (no tiɲɛni kɔfɛ NaOH 50% furaji la san kelen kɔnɔ).
(2) Mekaniki lakanani fɛɛrɛw .
Ka ɲɛsin masinw ɲɛminɛbaga ɲɛminɛlanw ma, tigitigi-Sɛbɛn min bɛ kɛ ni RA ye, o ka gɛlɛn walima a bɛ bɛn 0,8 μm ma ani kɔgɔjida D 60-70 ka gɛlɛya damadɔ de ka fisa. O bɛ nɛgɛ chip (nɛgɛ) sɔgɔli bali ka ɲɛ ani ka sɛgɛn kojugu bali guide rail surface (nɛgɛso sanfɛla) la.
(3) Lamini lakanani yɔrɔw .
Nɔgɔ furakɛli yɔrɔw datugucogo siratigɛ la, HDPE sɛbɛn nɔgɔman min ka fomu hakɛ ye 0,7 g/cm3 ye, o bɛ se ka dɔ bɔ a jɔcogo la ni 40% ye ka sɔrɔ ka doni caman mara-Baara hakɛ min bɛ tilatila cogo kelen na ka tɛmɛ walima ka bɛn 1,5 t/m2 ma).
Material Selection for HDPE sheeting ye fɛnba ye min bɛ kɛ ka fɛnw baarakɛcogo paramɛtiriw ni baarakɛcogo wajibiyalenw bɛn ɲɔgɔn ma tigitigi. Ɛntɛrinɛti waleyali la, fɛn caman, i n’a fɔ masinw fanga, sigida kɛlɛli, ani sɔrɔko baarakɛcogo, olu ka kan ka jateminɛ ka ɲɛ, wa furakɛli sugandilen ka dannaya ka kan ka sɛgɛsɛgɛ ni sɛgɛsɛgɛli prototype ye. Ni ɲɛtaa kɛra ɲagami ni fɛn caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman caman O b’a ɲini fɛnw dilannikɛlaw fɛ u ka to ka u ka faamuyali juguya fɛɛrɛw la minnu bɛ fɛn in ka mikrostruktɛri ni a ka maksimali nafaw siri ɲɔgɔn na.
