TPU Film's Mai hana ruwa da Kayayyakin Danshi

Babban aikinThermoplastic Polyurethane (TPU) fimya ta'allaka ne a cikin kaddarorinsa na musamman mai hana ruwa da danshi-zai iya toshe ruwan ruwa daga shiga yayin da yake barin kwayoyin tururin ruwa (gumi, gumi) su wuce.

1. Manufofin Ayyuka da Ma'auni

1. Rashin Ruwa (Tsarin Matsi na Hydrostatic):
   • Nuni: Yana auna ikon fim ɗin don tsayayya da matsa lamba na waje, wanda aka auna a kilopascals (kPa) ko millimeters na ginshiƙin ruwa (mmH₂O). Ƙimar da ta fi girma tana nuna ƙarfin aikin hana ruwa. Misali, tufafin waje na yau da kullun na iya buƙatar ≥13 kPa, yayin da kayan aikin ƙwararru na iya buƙatar ≥50 kPa.
   • Standarda'idar Gwaji: Yawancin gwajin da aka yi amfani da su ta amfani da ISO 811 ko ASTM D751 (Hanyar Ƙarfin Ƙarfi). Wannan ya haɗa da ci gaba da ƙara matsa lamba na ruwa a gefe ɗaya na fim ɗin har sai ɗigon ruwa ya bayyana a gefe guda, yin rikodin ƙimar matsa lamba a wannan batu.
2. Lalacewar Danshi (Tsarin Tururi):
   • Nuni: Yana auna yawan tururin ruwa da ke wucewa ta raka'a na fim ɗin kowane lokaci naúrar, wanda aka bayyana a cikin giram kowace murabba'in mita a cikin sa'o'i 24 (g/m²/24h). Ƙimar da ta fi girma tana nuna mafi kyawun numfashi da zubar da gumi. Yawanci, ƙimar da ta wuce 5000 g/m²/24h ana ɗaukarta mai numfashi sosai.
   • Matsayin Gwaji: Akwai manyan hanyoyi guda biyu:
     • Hanyar Kofin Kai tsaye (Hanyar Desiccant): misali, ASTM E96 BW. Ana sanya mai desiccant a cikin kofi, an rufe shi da fim ɗin, kuma ana auna yawan tururin ruwa a ƙarƙashin takamaiman yanayin zafi da yanayin zafi. Sakamako sun fi kusa da ainihin yanayin lalacewa.
     • Hanyar Kofin Juyawa (Hanyar Ruwa): misali, ISO 15496. Ana sanya ruwa a cikin kofi, wanda aka juyar da shi kuma a rufe shi da fim, kuma ana auna yawan tururin ruwa da ke fitowa ta cikin fim. Wannan hanyar tana da sauri kuma galibi ana amfani da ita don sarrafa inganci.

2. Ƙa'idar Aiki

A hana ruwa da danshi-permeable Properties naTPU fimBa a samun su ta hanyar pores na jiki amma sun dogara da matakin matakin kwayoyin halitta na sassan sarkar hydrophilic:

• Mai hana ruwa: Fim ɗin kanta yana da yawa kuma ba shi da pore; Ruwan ruwa ba zai iya wucewa ba saboda tashin hankalinsa da tsarin kwayoyin halittar fim din.
• Danshi mai yuwuwa: polymer ɗin ya ƙunshi ƙungiyoyin hydrophilic (misali, -NHCOO-). Wadannan kungiyoyi suna "kama" kwayoyin tururin ruwa da ke fita daga fata a ciki. Sa'an nan kuma, ta hanyar "motsi na sashi" na sarƙoƙi na polymer, kwayoyin ruwa suna "tsayi" mataki-mataki daga ciki zuwa yanayin waje.

3. Hanyoyin Gwaji

1. Gwajin Matsi na Hydrostatic: Ana amfani da shi don auna daidai matsi mai hana ruwa na fim ko masana'anta.
2. Kofin Ƙarfin Danshi: Ana amfani da shi a cikin madaidaicin zafin jiki da ɗakin zafi don auna ƙimar watsawar danshi (MVTR) ta amfani da hanyar kofin madaidaiciya ko jujjuyawar.

4. Aikace-aikace

Amfani da waɗannan kaddarorin,TPU fimshine zaɓin da aka fi so don manyan aikace-aikace masu yawa:

• Tufafin Waje: Maɓalli mai mahimmanci a cikin riguna masu wuya, suturar ski, da wando na yawo, yana tabbatar da bushewa da kwanciyar hankali ga masu sha'awar waje a cikin iska da ruwan sama.
• Kariyar Likita: Ana amfani da su a cikin rigar tiyata da kayan kariya don toshe jini da ruwan jiki (mai hana ruwa) yayin barin gumi da ma'aikatan kiwon lafiya ke haifarwa don tserewa, yana rage zafin zafi.
• Yakin kashe gobara da sawa na horar da sojoji: Yana ba da kariya a cikin matsanancin yanayi, yana buƙatar juriya ga wuta, ruwa, da sinadarai, haɗe tare da babban numfashi don kula da motsi da aiki.
• Kayayyakin Takalmi: Ana amfani da su azaman safa mai hana ruwa (booties) don kiyaye ƙafafu a bushe a yanayin ruwan sama yayin hana zafi na ciki da haɓaka danshi.

A taƙaice, ta hanyar tsarinsa na musamman na zahiri da sinadarai, fim ɗin TPU da basira yana daidaita daidaitattun buƙatun da ake ganin sun saɓa wa "mai hana ruwa" da "numfashi," yana mai da shi muhimmin abu mai mahimmanci a fagen kayan masarufi masu inganci.