Polyester vs. Nylon Flat Slings: Chemical Resistance and Elongation Profiles

Chomera chamankhwala chimafunika gulayeti chathyathyathya chonyamulira zitsulo zosapanga dzimbiri pamalo pomwe pamakhala utsi wa asidi. Malo okonzera m'madzi amafunikira gulaye yomwe imatha kuthana ndi mafuta a hydraulic ndi kuwonekera kwamadzi am'nyanja. Ntchito zonse ziwiri zimafunikira masing'ilo opangidwa ndi lathyathyathya-koma kusankha koyenera kumakhala kosiyana pa chilichonse.

Lishenflex yakhala ikupanga zopanga kwa zaka zoposa makumi awiri, ndipo funso limodzi lomwe timamva pafupipafupi ndilakuti: Polyester kapena nayiloni - ndi iti yomwe ili yabwinoko? Yankho silimakhala lophweka. Malinga ndi zomwe Wikipedia idalemba pa poliyesitala , poliyesitala ndi gulu la ma polima amtengo wapatali chifukwa cha kulimba kwake, kukana mankhwala, komanso kuyamwa kochepa kwa chinyezi. Wikipedia pa nayiloni Kulemba kwa kumafotokoza kuti nayiloni ndi yamtengo wapatali chifukwa cha mphamvu zake, kulimba, komanso kukana kukwapula. Zida zonsezi zimapanga masiling'i abwino kwambiri okweza, koma sasinthana . Malinga ndi bungwe la Canadian Center for Occupational Health and Safety (CCOHS) , gulayeni za nayiloni zimawonongeka ndi asidi koma zimatsutsana ndi alkali, pamene ma poliester amawonongeka ndi alkalis koma amakana ma asidi. Chofunikira ndikufananiza zinthu ndi chilengedwe.

Kukaniza kwa Chemical: Kusiyana kwa Chitetezo Chachikulu

Kusiyanitsa kofunikira kwambiri pakati pa polyester ndi nayiloni lathyathyathya slings ndi mogwirizana ndi mankhwala . Kusankha zinthu zolakwika m'malo opangira mankhwala kungayambitse kulephera koopsa - nthawi zambiri popanda chenjezo lowonekera.

Malinga ndi chiwongolero chofananira cha zinthu za Liftex, , kusiyana kwakukulu kwa mankhwala ndi :

Gwero: Liftex; CCOHS; CERTEX Denmark

CCOHS imatsimikizira kuti nayiloni imatha kuwonongeka mu zidulo kuyambira kulibe mpaka kuwonongeka kwathunthu, pomwe poliyesitala imalimbana ndi asidi ambiri koma imawonongeka ndi alkalis. CERTEX Denmark ikuwonjezera kuti mayankho a ma acid kapena ma alkalis omwe alibe vuto pamlingo wocheperako amatha kuchulukira chifukwa cha kutuluka kwa nthunzi ndikuwononga.

Chenjezo lofunika kwambiri lachitetezo : Kuwonongeka kwa mankhwala pazitsulo zopangidwa nthawi zambiri sikuwoneka . Ulusiwo umafowoka mkati pomwe gulaye imaoneka yabwinobwino pamwamba. Malingana ndi Empire Rigging , kuwonongeka kwa mankhwala nthawi zambiri kumakhala kosaoneka-zingwe zimafooketsa mkati pamene gulaye ikuwoneka bwino kwambiri kunja, chifukwa chake kudziwa malo anu ndikofunikira musanasankhe zinthu zanu.

Malo a Acid-Sankhani Polyester

Mukakweza m'malo okhala ndi asidi-zomera zamankhwala, kupanga mabatire, kumaliza zitsulo, mphero zamapepala - polyester ndiye chisankho choyenera. Nayiloni, mosiyana, imawonongedwa ndi zidulo. Mazzella Companies amawona kuti nayiloni imatha kuwonongeka mu zidulo kuyambira pang'ono mpaka kuwonongeka kwathunthu, pomwe poliyesitala imalimbana ndi ma asidi ambiri. Buku la NSRP Ship Production Rigging Guide limachenjeza kuti ma hydrochloric ndi sulfuric acid, ngakhale atachepetsedwa, amatha kutaya mphamvu kwambiri mu nayiloni.

Malo a Alkali—Sankhani Nayiloni

Mukakweza malo okhala ndi alkali - njira zoyeretsera, kupanga konkire, kukonza mankhwala ena - nayiloni ndiye chisankho chabwinoko. Polyester imawonongeka ndi alkalis, pomwe nayiloni imakhala yotetezeka ku zotsatira za alkalis. Buku la UNIROPE fiber properties likunena kuti nayiloni imakana bwino ma aldehydes, ma hydrocarbon, ethers, ndi alkalis ena.

Elongation Profiles: Tambasulani Pansi pa Katundu

Kusiyana kwakukulu kwachiwiri pakati pa poliyesitala ndi gulayeti za nayiloni ndizotalikirapo —komwe gulaye imatambasuka bwanji ikapakidwa.

Liftex imapereka chidziwitso chotsatira cha elongation:

Gwero: Liftex; UNIROPE

Polyester - yolondola komanso yokhazikika

Kutalikira kotsika kwa poliyesitala (3-4% pa katundu woyengedwa) kumapangitsa kukhala chisankho chokondedwa cha:

• Kuyika katundu molondola - kutambasula pang'ono kumatanthauza kulamulira bwino

• Kugwiritsa ntchito pazipinda zocheperako - malo osayima ochepa omwe amagwiritsidwa ntchito pakukweza

• Katundu yemwe sangalole kudumpha kapena kugwedezeka

• Zochita zomwe zimafuna kukwezedwa kokhazikika, kodziwikiratu

Empire Rigging imapereka chitsanzo chothandiza: kukweza katundu wa 20-foot ndi gulaye ya nayiloni yomwe imatambasula 10% kumapangitsa kuti kutalika kwake kukhale mamita awiri, pamene gulayesi ya polyester ingatambasule pafupifupi mainchesi asanu ndi awiri okha. M'magawo ang'onoang'ono, kusiyana kumeneku ndikofunikira.

Nayiloni—Kuyamwa Modzidzimutsa ndi 'Kukhululuka'

Kutalikira kwa nayiloni (6-10% pamlingo wovomerezeka) kumapereka:

• Mayamwidwe owopsa -zinthu 'zimapereka' zisanatenge mphamvu

• Kulekerera kwamphamvu kwapang'onopang'ono -kwabwino kwa katundu omwe amasuntha panthawi yokweza

• Kukhululukidwa pa hardware yosakhazikika - nayiloni ndi yokhululuka kwambiri ngati itayikidwa pazipangidwe za hardware zosagwirizana

• Mphepete mwachitetezo chaowonjezera - kutambasula kumatenga katundu wadzidzidzi

Malingana ndi Liftex , kutambasula kwapamwamba kwa nayiloni kumakhala ngati chododometsa, kumapanga chisankho chokondedwa pamene katundu angasunthike kapena pamene kukweza kwakukulu kumakhala kodetsa nkhawa.

Chinyezi ndi UV Kuyankha

Zotsatira Zachinyezi

Nayiloni ndi hygroscopic - imayamwa chinyezi kuchokera ku chilengedwe. Malingana ndi NSRP Ship Production Rigging Guide , nayiloni imataya 15% ya mphamvu zake pamene . Liftex yonyowa ndi CCOHS imatsimikizira izi, podziwa kuti zitsulo za nayiloni zimatha kutaya mphamvu 10-15% zikanyowa. Mphamvu imabwezeretsedwa ikayanika, koma gulaye siyenera kugwiritsidwa ntchito pamlingo wovomerezeka ikanyowa.

Polyester satenga madzi ndipo sataya mphamvu ikanyowa. Izi zimapangitsa polyester kukhala chisankho chokondedwa cha:

• Ntchito zam'madzi ndi zam'nyanja

• Zokwera panja m'malo onyowa

• Malo okhala ndi chinyezi chambiri

CERTEX Denmark imanena kuti Dyneema® sichimamwa madzi, mosiyana ndi zipangizo zina monga polyester ndi polyamide.

Kukaniza kwa UV

Polyester imapereka kukana kwa UV kwapamwamba poyerekeza ndi nayiloni. Ulusi wa nayiloni umakhudzidwa ndi kuwala kwa UV ndi kuwala kwa dzuwa, zomwe zimapangitsa kuti mphamvu ziwonongeke pakapita nthawi. Mazzella Companies amachenjeza kuti malo omwe ma slings opangira ukonde amawonekera mosalekeza ku kuwala kwa ultra-violet amatha kusokoneza mphamvu ya maukonde opangidwa mosiyanasiyana, kuyambira pakuwonongeka pang'ono mpaka kuwonongeka kwathunthu, ndipo kuwonongeka kumachulukirachulukira. Kwa ma slings omwe amagwiritsidwa ntchito panja kapena padzuwa, polyester ndiye chisankho chokhazikika.

Malire a Kutentha

Pansi pa TS EN 1492-1 gulayeti zonse za poliyesitala ndi nayiloni ndizoyenera kugwiritsidwa ntchito ndikusungidwa pa kutentha kwa -40 ° C mpaka 100 ° C . Izi zikugwira ntchito kuzinthu zonse ziwiri. Komabe, Empire Rigging imawona kusiyana kothandiza kwa malire ogwiritsira ntchito mosalekeza: nayiloni imayikidwa mpaka 194 ° F (90 ° C), pamene poliyesitala imayikidwa mpaka 180 ° F (82 ° C) - yotsika pang'ono. Pamwamba pa kutentha kumeneku, zipangizo zimayamba kutaya mphamvu.

Zofunika kudziwa : M'malo opangira mankhwala, kutentha kumeneku kumatha kusiyana, ndipo upangiri wa wothandizira uyenera kufunidwa.

Chizindikiritso: Momwe Mungauzire Polyester kuchokera ku Nylon

ASME B30.9 ndi WSDA-WS-1 amafuna kuti gulaye iliyonse pa intaneti ikhale ndi tag yofotokoza za zinthuzo. Kuphatikiza apo, gulayeni za poliyesitala zimakhala ndi chingwe chozindikiritsa cha buluu cholukidwa pansalu —ngati muwona mzere wabuluu, ndi poliyesita. Zovala za nayiloni zilibe mzere wozindikiritsa uwu. Dongosolo lolembera utoto pansi pa EN 1492-1 limagwira ntchito pazida zonsezi mofanana.

Kalozera Wosankha

Mwachidule ndi Malangizo Othandiza

Ma polyester ndi nayiloni zosalala zonse zimapereka mphamvu komanso kulimba, koma sizisinthana . Kusankha zinthu zolakwika m'malo mwanu kungayambitse kuwonongeka kobisika komanso kulephera mwadzidzidzi.

Zofunikira zazikulu:

1. Malo a Acid = Polyester - nayiloni imawonongedwa ndi zidulo

2. Malo a alkali = nayiloni - polyester imawonongeka ndi alkalis

3. Zokwezera mwatsatanetsatane = Polyester - kutalika kochepa kumapereka chiwongolero

4. Katundu wamphamvu = Nayiloni - kutambasuka kwakukulu kumatengera kugwedezeka

5. Kunja/kunyowa = Polyester —Kusamva UV komanso kusamva chinyezi

6. Yang'anani mzere wa buluu - gulayesi ya poliyesitala ili ndi mzere wa blue tracer; nayiloni alibe

7. Tsimikizirani chizindikirocho nthawi zonse -ASME B30.9 imafuna chizindikiritso cha zinthu pa legeni

Lishenflex imapanga poliyesitala ndi nayiloni zosalala za EN 1492-1 ndi ASME B30.9, zokhala ndi chidziwitso chomveka bwino komanso zolembera zamitundu. Timapereka chitsogozo pakusankha zinthu kutengera malo omwe mumapangira mankhwala komanso zomwe mukufuna kugwiritsa ntchito.

Ngati mukufuna thandizo kuti mudziwe ngati poliyesitala kapena nayiloni ndiye njira yoyenera yonyamulira—kapena mukufuna thandizo lozindikira gulaye yoyenera ya malo okhala ndi mankhwala—chonde tumizani imelo kwa sales@lishenflex.com , ndipo gulu lathu laukadaulo lidzapereka chithandizo chamunthu payekha.