Indlela ukukhetha le ngcina ukuze polyethylene: amacebo kunye nohlaziyo

Polyethylene - omnye izinto ethandwa kakhulu futhi-yaziwa kakuhle. Not kubiza imali eninzi kwaye, ngokubanzi, nabalulamileyo. Polyethylene isoloko isetyenziswa kulwakhiwo zokugcina kunye zokugcina usambathisa kunye ezimanzi-zokufunda kwakhona bezinto ezahlukeneyo. Ngelo xesha umsebenzi ngabafundisi abaninzi ujongene imfuneko uncamathelise eziphathekayo. Oku kulapho iqala khona iingxaki. Into yokuba polyethylene uxhumo kahle. Kodwa ikhuselekile sisenako encediswa glue. Unako ukwenza phantsi amanyathelo ubushushu. Indlela ukukhetha le ngcina ekunene ngenxa polyethylene nokuba kuyimfuneko ukunikela ingqalelo emsebenzini? Iimpendulo zale mibuzo neminye zingafunyanwa ngezantsi.

iimpawu polyethylene

Le izinto ephawulekayo iye iipropati ezininzi umdla. Polyethylene iyasetyenziswa ukukhusela nxamnye ukufuma yinto yokwambathisa zombane egqwesileyo kwaye iyakwazi ukufunxa enye kwezo ingozi radiation. Kuyinto phantse ngokupheleleyo ukumelana kwimichiza. Ngayo le mfanelo lokugqibela ngamanye amaxesha isidima iba engxakini. Uphawu izinto ezifana nendlela ukukhetha polyethylene enamathelayo?

Okubangel 'umdla kukuba, loo nisondelelane - yinto khemikhali kuphela, kodwa othile inkqubo yombane. Iimolekyuli enxulumene izinto ninomdla omnye komnye ngenxa umahluko ezigxineni zabo. Ngoko ke kunzima kakhulu ukufumana into ethe nca apha polyethylene, yaye emva kokuba yaphuse usibambe ndawonye amaqhekeza semali. Ekubeni molecule umbandela kakhulu "olufezekileyo", uze uncamathelise kunokuba nzima kakhulu kunye nezinye izinto. Sekunjalo, lo icandelo yemichiza kuye udale kulu lib polyethylene. Kwaye akukho namnye. ngcina kufuneka babe iipropati ezithile. Makhe sijonge ukuba yintoni na.

Iimfuneko izinto ngcina

Ukuba ugqiba ekubeni unamathele polyethylene okanye penofenol (it uhlobo ugwebu) ukuya ikhonkrithi okanye lwezitena umphezulu, umaleko eqwalasele ngcina kufuneka abe nenani iipropati:

• Sizinze lokuba imo yezulu.
• Musa ukuzitshabalalisa izinto abraded.
• Kube kwiqondo eliphezulu hygroscopicity kunye adhesion.
• Zimelane lobushushu eliphantsi.
• Izinga kubola kunye fungistatisticheskie.
• Ukugcina iipropati zabo ixesha elide.

ncomo Consumer bathi Ndifuna ukunikela ingqalelo ukhuseleko yendalo engqongileyo iglu. Oku kubaluleke ngakumbi xa usebenzisa izixhobo umhombiso wangaphakathi. Ukuba ukhetha ukusebenzisa polyethylene (penofenol) kwi saunas ngokutsha okanye leebhate zeoli, simele sinikele ingqalelo le ngcina ubushushu ezongezelelweyo ukumelana kunye nokumelana kwalo umphunga wamanzi ashushu.

Indlela ukukhetha le ngcina?

Ukuba awuyazi ukuba uhlobo ngcina polyethylene okulungileyo wena, cela umthengisi ukuba bakhangele lowo equka acrylate methyl. Le nto inika ukuthambisa polyethylene ngokukhawuleza kwaye ezikumgangatho ophezulu nimanyane. Kwakhona yindlela zisenokuquka acetic chromic, asidi ezahlukeneyo kunye xylene. Inzuzo engenakuphikiswa le iglu kukuba xa usebenzisa ukuba akuyomfuneko ukuba unyango kumphezulu olongezelelweyo. Kodwa abasebenzisi zithi ukuba isiphako. Loo polyethylene enamathelayo yityhefu kakhulu. Ngoko ke, wonke umsebenzi bhetele kakhulu phandle. Kaloku, okanye ubuncinane kufuneka ukuba umoya esemgangathweni. Kungcono odibanisa 'imisebenzi' kubushushu ka +35 c. Akoyiki ukufuma, kodwa ngokukhawuleza.

Kwakhona ezivenkileni zinokufunyanwa yindlela loqhakamshelwano le neeplastikhi. Bona kuthengiswa ngokohlobo intlama engqindilili. Ezi zibandakanya sijike ngokuqhelekileyo eqhotyoshelweyo. Emva kokuba uxhulumaniso lwe macandelo mabini, le ngcina ofumana isakhiwo oyifunayo. Njengoko isinyibilikisi umphunga ngokukhawuleza, sebenzisa umxube kufuneka ngokukhawuleza. Ngoko ke musa nje zizala lukhulu.

Kodwa neoprene ngcina kuba polyethylene kubhetele ukuba ukuyisebenzisa. Loo sisincoko sifaneleke ngakumbi loqhakamshelwano irabha okanye iindawo rubberized neoprene ngelaphu, ngethwathwa, waziva, yodongwe, intsimbi, kulo naluphi na udibaniso. Kodwa istro, ezinepolypropylene eyandisiweyo, polyethylene, kunye PVC plasticized kubhetele ukuba isicelo. Akukho lutho.

ngcina acrylic nge lokufaka

Ukuba awuyazi into odibanisa polyethylene amagwebu, zama ukusebenzisa candelo-ezimbini ngokususela methyl efanayo. Kungenjalo, unga zama Easy-Mix PE-PP Brand Weicon. It has iipropati ezibalaseleyo adhesion. Isetyenziswa lib ezinepolypropylene, polyvinylchloride kunye nezinye izinto polymeric. Xa usebenza nale iglu kuya kufuneka ukuba khawuleza. Igcina iipropati yayo emoyeni evulekileyo ayikho kwimizuzu ngaphezu kwemithathu.

Easy-Mix PE-PP iqulethe isongezo eyenziwa amaso zeglasi ezincinane. Le lokufaka angazishiyi kwindawo iqhina glue. Ngoko ke, lo umthungo ujika ngaphandle ibingenamongo ngokwaneleyo. ngcina enjalo for polyethylene amagwebu kufuneka kusetyenziswe kuphela ukususela ezingxobeni wokuqala lokuxhuba. Ukusebenza kunye naye kuhle xa amaqondo obushushu +22 ° C. ukuqaqadeka epheleleyo kuqinisekiswa hayi ngaphambi ngaphezu kweeyure 5-6.

epoxy ngcina

Kakade ke, akukho ngcina asihambelani kakhulu lib polyethylene. Ke ukuba anithanga nibe nako ukufumana nantoni na enye, ungazama. Nje kufuneka ulungiselele kumphezulu lokuqala:

1. Kungqameko iinxalenye semali "ukucoca" ngelaphu elihle elilukhuni. Emva koko degrease uwahlambe.
2. Zombini iindawo inkqubo-20% nesisombululo acetic chromic okanye i-25% nesisombululo potassium dichromate. Ukuba ezi zinto ayikwazanga kufunyanwa, ungasebenzisa isisombululo olomeleleyo potassium permanganate.
3. Emva kumphezulu ngokuphatha owomileyo.
4. Ukuxuba le ngcina ngokwemiyalelo. Faka umaleko obhityileyo imiphezulu nimanyane. Ngoko nangoko enkantolo iinkcukacha.
5. Yima iiyure eziliqela, nemini engcono - up ukugqibezela Ukuqinisa umthungo.

ncomo Umsebenzisi zibonisa ukuba nentlaka phenol-formaldehyde iye adhesion ebalaseleyo polyethylene. Ngoko ke ukuba ulandele ngenyameko imiyalelo, niya kuphumelela.

polyethylene Wanamathela: umyalelo

Njengoko ubona, odibanisa polyethylene, abanye ulwazi eyodwa awudingi. Le nkqubo isebenza ngoko nangoko eziqhelekileyo:

• coca;
• degrease
• owomileyo;
• ekusasazeni nokwakheka ngcina;
• izitho seal;
• press;
• ushiye ukuba yome nko.

Ngelo xesha, njengoko uya kwenza njalo ngaso nasiphi na izinto eziyityhefu, kufuneka sibe nenkxalabo malunga ubukho iindondo zokuzikhusela, iiglavu kunye baphefumla.