Babban aikinFim ɗin Polyurethane (TPU) na Thermoplasticyana cikin kyawawan halayensa na hana ruwa shiga da kuma yadda danshi ke shiga—yana iya toshe ruwan ruwa daga shiga yayin da yake barin ƙwayoyin tururin ruwa (gumi, gumi) su ratsa ta.
1. Alamomin Aiki da Ma'auni
- Rashin ruwa (Juriyar Matsi na Hydrostatic):
- Mai nuna alama: Yana auna ikon fim ɗin na juriya ga matsin lamba na ruwa na waje, wanda aka auna a cikin kilopascals (kPa) ko millimeters na ginshiƙin ruwa (mmH₂O). Babban ƙima yana nuna ƙarfin aikin hana ruwa shiga. Misali, tufafin waje na yau da kullun na iya buƙatar ≥13 kPa, yayin da kayan aiki na ƙwararru na iya buƙatar ≥50 kPa.
- Ma'aunin Gwaji: Ana gwada shi ta amfani da ISO 811 ko ASTM D751 (Hanyar Ƙarfin Fashewa). Wannan ya ƙunshi ci gaba da ƙara matsin lamba a gefe ɗaya na fim ɗin har sai digo na ruwa ya bayyana a ɗayan gefen, yana rikodin ƙimar matsin lamba a wannan lokacin.
- Danshi Mai Ragewa (Gyara Tururi):
- Mai nuna alama: Yana auna nauyin tururin ruwa da ke ratsa yankin naúrar fim ɗin a kowane lokaci na naúrar, wanda aka bayyana a cikin gram a kowace murabba'in mita a kowace awa 24 (g/m²/awa 24). Babban ƙima yana nuna ingantaccen numfashi da kuma guiwar da ke fita. Yawanci, ana ɗaukar ƙimar da ta wuce 5000 g/m²/awa 24 a matsayin mai sauƙin numfashi sosai.
- Tsarin Gwaji: Akwai manyan hanyoyi guda biyu:
- Hanyar Kofin Tsaye (Hanyar Busar da Abinci): misali, ASTM E96 BW. Ana sanya abin busar da abinci a cikin kofi, an rufe shi da fim ɗin, sannan a auna adadin tururin ruwa da ke sha a ƙarƙashin takamaiman yanayin zafi da danshi. Sakamakon ya fi kusa da yanayin lalacewa na ainihi.
- Hanyar Kofin Juyawa (Hanyar Ruwa): misali, ISO 15496. Ana sanya ruwa a cikin kofi, wanda aka juya aka rufe shi da fim ɗin, kuma ana auna adadin tururin ruwa da ke tururi ta cikin fim ɗin. Wannan hanyar tana da sauri kuma galibi ana amfani da ita don sarrafa inganci.
2. Ka'idar Aiki
Abubuwan da ke hana ruwa shiga da kuma danshi a cikin ruwaFim ɗin TPUBa a samun su ta hanyar ramukan jiki ba amma sun dogara ne akan aikin matakin kwayoyin halitta na sassan sarkar hydrophilic:
- Ba ya hana ruwa shiga: Fim ɗin da kansa yana da yawa kuma ba shi da ramuka; ruwan ruwa ba zai iya wucewa ba saboda matsin saman fim ɗin da kuma tsarin ƙwayoyin halitta.
- Danshi Mai Rarrabawa: Polymer ɗin ya ƙunshi ƙungiyoyin hydrophilic (misali, -NHCOO-). Waɗannan ƙungiyoyin suna "kama" ƙwayoyin tururin ruwa da ke ƙafewa daga fata a ciki. Sannan, ta hanyar "motsi na sashe" na sarƙoƙin polymer, ƙwayoyin ruwa ana "haɗa su" daga ciki zuwa muhallin waje.
3. Hanyoyin Gwaji
- Mai Gwaji Mai Matsi na Hydrostatic: Ana amfani da shi don auna matsin lamba na hana ruwa shiga fim ɗin ko masana'anta daidai.
- Kofin Danshi Mai Rage Danshi: Ana amfani da shi a cikin ɗakin zafin jiki da danshi mai ɗorewa don auna ƙimar watsa tururin danshi (MVTR) ta amfani da hanyar ƙoƙon tsaye ko juyewa.
4. Aikace-aikace
Amfani da waɗannan kaddarorin,Fim ɗin TPUshine zaɓi mafi kyau ga aikace-aikace masu yawa masu inganci:
- Tufafin Waje: Babban abin da ke cikin jaket masu tauri, rigar kankara, da wandon hawa dutse, yana tabbatar da bushewa da jin daɗi ga masu sha'awar waje a cikin iska da ruwan sama.
- Kariyar Lafiya: Ana amfani da shi a cikin rigunan tiyata da tufafin kariya don toshe jini da ruwan jiki (mai hana ruwa shiga) yayin da ake barin gumin da ma'aikatan lafiya ke fitarwa ya fita, wanda ke rage matsin lamba a kan zafi.
- Yaƙi da Kashe Gobara da Horar da Sojoji: Yana ba da kariya a cikin mawuyacin yanayi, yana buƙatar juriya ga wuta, ruwa, da sinadarai, tare da isasshen iska don kiyaye motsi da aiki.
- Kayan Takalma: Ana amfani da su azaman abin rufe safa mai hana ruwa shiga (booties) don kiyaye ƙafafuwa bushewa a yanayin ruwan sama yayin da ake hana taruwar zafi da danshi a ciki.
A taƙaice, ta hanyar tsarinsa na musamman na zahiri da na sinadarai, fim ɗin TPU yana daidaita buƙatun "mai hana ruwa" da "mai numfashi" da suka yi kama da juna, wanda hakan ya sanya shi muhimmin abu mai mahimmanci a fannin yadi mai inganci.
Lokacin Saƙo: Satumba-22-2025