Nkhani

Pakati pa mapulasitiki a uinjiniya, chinthu chimodzi chimadziwikiratu chifukwa chokana kuvala bwino, kukana kukhudzidwa, komanso zodzipaka mafuta, zomwe zimapangitsa kuti ikhale imodzi mwamayankho abwino kwambiri pantchito yovuta. Polyethylene yapamwamba kwambiri yama molekyulu (UHMWPE) yasinthidwa kukhala mawonekedwe a pepala, kukulitsa kuchuluka kwa ntchito zake kumlingo womwe sunachitikepo, kuchita gawo losasinthika m'chilichonse kuyambira machitidwe opatsirana olemera amakampani mpaka mizere yopangira chakudya.

I. Kumvetsetsa UHMWPE: Kodi "Ultra-High Molecular Weight" ndi chiyani?

UHMWPE si polyethylene wamba. Pakatikati pake pali "kulemera kwambiri kwa molekyulu" - maunyolo ake a molekyulu amakhala aatali kuwirikiza ka 10 kuposa a polyethylene wamba wamba.Zithunzi za HDPE), pafupifupi 1.5 miliyoni. Unyolo wa mamolekyuwa umakoledwa, n’kupanga mamolekyu olimba kwambiri moti amapangitsa kuti zinthuzo zikhale ndi mphamvu zochititsa chidwi kwambiri.

Mapepala a UHMWPE amapangidwa kuchokera kuzinthu zapaderazi kudzera mu sintering, kukanikiza, kapena kutulutsa. Makulidwe ake amachokera ku mamilimita angapo mpaka mazana a millimeters, kukwaniritsa zosowa za ntchito zosiyanasiyana.

II. Katundu Asanu Opambana aMapepala a UHMWPE

1. Kukana Kwambiri Kuvala: Ichi ndi chikhalidwe chodziwika kwambiri cha UHMWPE. Kukana kwake kuvala ndikokwera kwambiri kuposa zitsulo zambiri (monga carbon steel ndi zitsulo zosapanga dzimbiri), 4-5 nthawi za nayiloni (PA), ndi 3 nthawi za polyoxymethylene (POM). M'malo ovala abrasive, ndiyedi "King of Plastics."

2. Kukaniza Kwambiri Kwambiri: Ngakhale pa kutentha kotsika (-40 ° C kapena kutsika), mphamvu yake imakhalabe yokwera kwambiri, imakoka bwino kugwedezeka ndi kugwedezeka popanda kusweka kapena kusweka mosavuta.

3. Zodzitchinjiriza Zabwino Kwambiri ndi Zopanda Ndodo: Kugundana kwake kumakhala kochepa kwambiri, kofanana ndi madzi, ndipo kumawonetsa zinthu zopanda ndodo. Izi zimachepetsa kukana pamene zida zikuyenda pamwamba pake, kuteteza kumamatira ndikuchepetsa kwambiri kuwonongeka kwa zida ndi zida.

4. Chemical Resistance: Imawonetsa kukana kwa dzimbiri kwa asidi ambiri, alkali, ndi mchere, ndikupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito m'malo owononga monga kukonza mankhwala.

6. Zaukhondo ndi zopanda poizoni: Zimagwirizana ndi US FDA ndi USDA certification, zimatha kulankhulana mwachindunji ndi chakudya ndi mankhwala, ndipo zimagwiritsidwa ntchito kwambiri m'mafakitale opanga zakudya ndi zamankhwala. Panthawi imodzimodziyo, imakhala ndi madzi ochepa kwambiri ndipo sizovuta kuswana mabakiteriya.

IV. Chifukwa Chosankha?Mapepala a UHMWPE? - Poyerekeza ndi Chitsulo ndi Mapulastiki Ena Amisiri

1. Poyerekeza ndi Chitsulo (mwachitsanzo, Carbon Steel, Stainless Steel):

Zosavala Kwambiri: Kutalika kwake kwa moyo kumaposa zitsulo pansi pa mavalidwe a abrasive.
Zopepuka: Kachulukidwe ake ndi 0.93-0.94 g/cm³, 1/7 yachitsulo, kupangitsa kuti ikhale yosavuta kuyiyika ndi kunyamula.

Zopanda phokoso: Zimagwira ntchito mwakachetechete, kuchotsa phokoso lopweteka la kugunda kwachitsulo.

Imalimbana ndi dzimbiri: Imalimbana ndi dzimbiri komanso imalimbana ndi mankhwala.

2. Poyerekeza ndi Pulasitiki Zina Zaumisiri (monga, nayiloni, Polyoxymethylene):

Zosamva Kuvala Kwambiri: Kusamva kwake kumakhala kokulirapo kangapo.

Lower Friction: Makhalidwe ake odzipaka okha ndi apamwamba.

Zambiri Zosasinthika: Ubwino wake umatchulidwa makamaka pa kutentha kochepa.

Chithunzi cha UHMWPEndi chimphona mwakachetechete wamphamvu m'munda wamakono mafakitale zipangizo. Ngakhale sizolimba ngati chitsulo, kukana kwake kosagwirizana ndi kuvala komanso magwiridwe antchito athunthu kumapangitsa kukhala wosewera wosasinthika polimbana ndi kuvala, kuchepetsa kugwiritsa ntchito mphamvu, komanso kukonza bwino. Kuchokera kumigodi kupita ku khitchini, kuchokera kumafakitale kupita ku mabwalo amasewera, kukhazikika kwa pepala la "pulasitiki wapamwamba" kumateteza magwiridwe antchito anthawi yayitali a zida zosawerengeka, ndikupangitsa kuti ikhale "woyang'anira wosavala" komanso "woteteza kutuluka" m'mafakitale.