Uphawu lwe-ultra high molecular weight polyethylene

1. ukuxhathisa okuphezulu kakhulu

Ubunzima betyhubhu ephezulu kakhulu ukuya kuthi ga kwizigidi ezi-2, isalathiso sokunxiba sincinci, sisinika ukuxhathisa okuphezulu kakhulu kwi-sliding friction.Ukumelana nokunxiba ngamaxesha angama-6.6 aphezulu kunentsimbi eqhelekileyo ye-alloy kunye namaxesha angama-27.3 aphezulu kunensimbi engenasici.Ngamaxesha angama-17.9 e-phenolic resin, amaxesha angama-6 e-nylon, amaxesha angama-4 e-polyethylene, aphucula kakhulu ubomi benkonzo yombhobho.

2. ukumelana nempembelelo ephezulu

Ixabiso lokuqina kwempembelelo ye-HMW-pipeline lelona liphezulu phakathi kweeplastiki zobunjineli ezikhoyo.Izinto ezininzi ziya kuqhekeka, zophuka, zophuke okanye zidinwe kumphezulu woxinzelelo phantsi kwefuthe elibi okanye eliphindaphindiweyo lokudubula.Le mveliso ngokwemigangatho ye-GB1843, uvavanyo lwempembelelo ye-cantilever beam ukufezekisa akukho monakalo, unokumelana nempembelelo eqinile yangaphandle, ukugqithiswa kwangaphakathi, ukuguquguquka koxinzelelo.

3. ukumelana nomhlwa

I-Uhmw-pe luhlobo lwesakhiwo seqela leemolekyuli ezihluthayo, ngoko uzinzo lwalo lwekhemikhali luphezulu kakhulu, imveliso inokuxhathisa ukhukuliseko lwemichiza eyomeleleyo, ukongeza kwi-asidi eyomeleleyo kubushushu obuphezulu inomhlwa omncinci, kwezinye ialkali, iasidi ayidlekanga.Ingasetyenziselwa kwi-hydrochloric acid egxininisiweyo kunye nokugxila ngaphantsi kwe-80%.Izinzile kwi-asidi ye-sulfuric kunye noxinzelelo olungaphantsi kwe-75% kunye ne-nitric acid kunye noxinzelelo olungaphantsi kwe-20%.

4. ukuzithambisa kakuhle

Kuba ityhubhu ye-UHMWPE iqulethe imathiriyeli ye-waxy, kwaye i-lubrication yayo ilungile kakhulu.I-friction coefficient (196N, iiyure ze-2) kuphela yi-0.219MN/m (GB3960).Ukusebenza kwayo ngokutyibilikayo kuphezulu kuneyentsimbi ethanjiswe ngeoli okanye ubhedu.Ngokukodwa kwimekobume erhabaxa, uthuli, intlenga kunye neendawo ezininzi, ukusebenza kwemveliso eyomileyo yokuthambisa kuboniswa ngokupheleleyo.Ayinako ukuhamba ngokukhululekileyo kuphela, kwaye ikhusele i-workpiece echaphazelekayo ekunxibeni okanye ekuxingeni.

5. ukumelana nobushushu obuphantsi obukhethekileyo

Umbhobho we-polyethylene we-Ultra wobunzima bemolekyuli unokumelana nobushushu obuphantsi, kwaye ukuxhathisa kwempembelelo yayo kunye nokumelana nokunxiba akuguquki kwi-minus 269 degrees Celsius.Okwangoku kuphela kweplastiki yobunjineli enokuthi isebenze kumaqondo obushushu asondele ku-zero.Kwangaxeshanye, umbhobho we-uHMWPE unokunyamezela ubushushu obubanzi, obunokusebenza kwiqondo lobushushu le--269℃ ukuya ku-80℃ ixesha elide.

6. Akukho lula ukukala

Umbhobho we-Uhmwpe unomgangatho olungileyo wokungabambeleli kunye nokugqitywa kombhobho ophezulu ngenxa yomlinganiso ophantsi wokukhuhlana kunye nokungahlukanisi.Izinto ezikhoyo zilinganisa ngokubanzi phakathi ngexabiso le-PH ngaphezulu kwe-9, kodwa umbhobho we-HMWPE awunyuki, nto leyo ibaluleke kakhulu kwinkqubo yokukhupha uthuthu lwamalahle kwizityalo zamandla obushushu.Kwi-oyile ekrwada, udaka kunye neminye imibhobho yezothutho nayo ifanelekile kakhulu.

7. ubomi beshelufu ende

I-Uhmwpe inemizila yemfuza engaphantsi kwe-unsaturated kwikhonkco lemolekyuli, kwaye amandla ayo okudinwa angaphezulu kwamaxesha angama-500,000.Ineyona nto ingcono yokuchasa uxinzelelo kunye nokuchasana noxinzelelo lokusingqongileyo.I-4000H, ngaphezu kwamaxesha e-2 ye-PE100, ingcwatywe iminyaka engama-50 okanye kunjalo, isenokugcina ngaphezu kwe-70% yeempawu zomatshini.

8. Ufakelo olulula

I-Ultra high molecular weight polyethylene (UHMW—-PE) iyunithi yobude beyunithi yombhobho isahlulo sesibhozo kuphela sobunzima bombhobho wentsimbi, ukuze ukulayisha kunye nokukhupha, ukuthuthwa, ukufakela kube lula ngakumbi, kwaye kunokunciphisa ukuqina kwabasebenzi, UHMW-PE umbhobho unamandla okuchasa ukuguga, iminyaka engama-50 ayilula ukuguga.Kungakhathaliseki ukuba ukwakhiwa komhlaba, okanye ukungcwatywa ngaphantsi komhlaba kunokuba.Nokuba i-welding okanye uqhagamshelo lwe-flange lunokufakelwa, lukhuselekile, luthembekile, lukhawuleza kwaye lufanelekile, akukho mhlwa, ukugcinwa kwabasebenzi kunye nokugcinwa kwabasebenzi, kubonisa ngokupheleleyo ukusetyenziswa kombhobho we-HMWPE "ukonga amandla, ukhuseleko lokusingqongileyo, uqoqosho kunye nokusebenza kakuhle" ukongamela.

9. Ezinye iimpawu

Umbhobho wepolyethylene wobunzima obuphezulu bemolekyuli kunye nokufunxwa kwamandla, ukufunxwa kwengxolo, ukuchasana ne-static, ukukwazi ukukhusela i-elektroniki, hayi ukufunxwa kwamanzi, ubunzima bokukhanya, ukwenziwa lula, ukufaka imibala kunye nezinye iimpawu ezibalaseleyo.