Polylactic acid abu ne mai yuwuwa kuma ɗayan abubuwan fiber masu albarka a cikin ƙarni na 21st.Polylactic acid (PLA)ba ya wanzu a cikin yanayi kuma yana buƙatar haɗin wucin gadi. Ana samun ɗanyen kayan lactic acid daga amfanin gona kamar alkama, gwoza sukari, rogo, masara, da takin zamani. Za a iya samun fibers na polylactic acid, wanda kuma aka sani da zaren masara, ta hanyar juyawa.
Ci gaban polylactic acid zaruruwa
Ana samun lactic acid a cikin yogurt. Daga baya, masana kimiyya sun gano cewa acid ɗin da ke haifar da motsin tsoka a cikin dabbobi da mutane shine lactic acid. Ƙirƙirar DuPont Corporation (wanda ya ƙirƙiri nailan) shine farkon wanda ya yi amfani da polymers na lactic acid don shirya kayan polymer na polylactic acid a cikin dakin gwaje-gwaje.
Bincike da haɓakar fibers na polylactic acid yana da tarihin sama da rabin ƙarni. Cyanamid, wani kamfani na Amurka, ya ƙirƙira sutures masu ɗaukar polylactic acid a cikin 1960s. A cikin 1989, Zhong Fang na Japan da Cibiyar Masana'antu Shimadzu sun haɗu don haɓaka zaren polylactic acid fiber (Lacton TM) mai tsafta da gauraye da filaye na halitta (Masar FiberTM), wanda aka baje kolin a 1998 Nagano Winter Games; Unijica Corporation na Japan ci gaba da polylactic acid filament da spunbond nonwoven masana'anta (Terramac TM) a 2000. Cargill Dow Polymers (CDP) a Amurka (yanzu NatureWorks) fito da jerin kayayyakin (IngeoTM) rufe polylactic acid resins, zaruruwa, da kuma fina-finai a 2003, kuma a Jamus jerin ba da lasisi samar da masana'anta na Trevira. ana amfani da su a fannoni kamar motoci, masakun gida, da tsafta.
Tsari da aikace-aikace na polylactic acid fibers
A halin yanzu, al'ada PLA ba saka yadudduka an yi daga high Tantancewar tsarki L-polylactic acid (PLA) a matsayin albarkatun kasa, amfani da high crystallinity da fuskantarwa halaye, da kuma shirya ta daban-daban kadi tafiyar matakai (narke kadi, rigar kadi, bushe kadi, bushe rigar kadi, electrostatic kadi, da dai sauransu.). Daga cikin su, narke spun polylactic acid fibers (dogayen zaruruwa, gajeren zaruruwa) za a iya amfani da su a cikin filayen tufafi, gida Textiles, da dai sauransu The samar kayan aiki da kuma tsari ne kama da polyester, tare da mai kyau spinnability da matsakaici yi. Bayan gyare-gyaren da ya dace, zaruruwan polylactic acid na iya samun ingantacciyar ƙarancin wuta (kashe kai) da kaddarorin ƙwayoyin cuta na halitta. Koyaya, narke spun PLA fiber har yanzu yana da ɗaki don haɓaka ƙarfin injina, kwanciyar hankali mai girman zafin jiki, juriya da juriya na tsufa.
Tushen rigar, busassun kadi, bushewar rigar kadi, da electrospinning na polylactic acid fibers (membranes) galibi ana amfani da su a fagen nazarin halittu. Samfuran wakilci sun haɗa da sutures masu ƙarfi masu ƙarfi, masu ɗaukar magunguna, membranes anti adhesion, fata na wucin gadi, kayan aikin injiniya na nama, da sauransu.
Tare da karuwar buƙatar yadudduka da ba sa saka a cikin likitanci, tsafta, tacewa, kayan ado da sauran fannoni, masana'anta na polylactic acid waɗanda ba saƙa suma sun zama ɗayan wuraren bincike da haɓaka haɓaka.
A cikin 1990s, Jami'ar Tennessee da ke Amurka ta fara nazarin polylactic acid spunbond da narkar da yadudduka maras saka. Daga baya Zhongfang na Japan ya kera yadudduka na polylactic acid spunbond mara saƙa don aikace-aikacen aikin gona, yayin da kamfanin Fibreweb na Faransa ya ƙera polylactic acid spunbond, narke shuɗaɗɗen yadudduka, da sifofi masu yawa (DepositaTM). Daga cikin su, spunbond nonwoven masana'anta Layer yafi bayar da goyon bayan inji, yayin da narke hura nonwoven masana'anta Layer da spunbond nonwoven masana'anta Layer tare da samar da wani shinge, adsorption, tacewa, da kuma rufi effects.
Domestic Tongji University, Shanghai Tongjieliang Biomaterials Co., Ltd., Hengtian Changjiang Biomaterials Co., Ltd. da sauran raka'a sun samu nasarar ɓullo da nonwoven yadudduka kamar spun viscose, spunlaced, zafi birgima, zafi iska, da dai sauransu a cikin ci gaban da composites ga nonwovens da nonwoven kayayyakin da sanitary zaruruwa kamar yadda ake amfani da sanitary na kayayyakin, kamar yadda ake amfani da sanitary na kayayyakin, kamar yadda ake amfani da sanitary na kayayyakin. diapers, da kuma abin rufe fuska, buhunan shayi, kayan tace iska da ruwa da sauran kayayyaki.
Polylactic acid fiber an inganta shi sosai kuma ana amfani dashi a cikin motoci, dauren sigari, da sauran yankuna saboda tushen sa na halitta, biodegradability, da abokantaka na muhalli.
Halayen filaye na polylactic acid
Ofaya daga cikin fa'idodin fa'idodin polylactic acid fibers shine ikon su na biodegrade ko sha cikin jiki. A karkashin daidaitattun yanayin takin zamani, dole ne a auna yanayin halittu, kuma samfuran lalata sune ruwa da carbon dioxide. Filayen polylactic acid na al'ada suna yin hydrolyze sannu a hankali ko ma da wahala a gano su cikin amfani na yau da kullun ko mafi yawan mahalli. Misali, idan aka binne shi a cikin kasa na halitta har tsawon shekara guda, ba ya raguwa, amma a karkashin yanayin takin zamani na al'ada, yana lalata kusan mako guda.
Lalacewa da ɗaukar filayen polylactic acid a cikin vivo suna da tasiri sosai ta hanyar crystallinity. Gwaje-gwajen lalatawar vitro a cikin vitro sun nuna cewa fibers polylactic acid masu girman crystallinity har yanzu suna kula da siffar su kuma kusan 80% ƙarfi bayan shekaru 5.3, kuma na iya ɗaukar shekaru 40-50 don cika ƙasƙanci.
Ƙirƙira da faɗaɗa zaruruwan polylactic acid
A matsayin nau'in fiber na sinadari da aka haɓaka kuma aka samar sama da rabin ƙarni, ainihin amfani da fiber na polylactic acid har yanzu bai wuce dubu ɗaya na fiber polyester ba. Ko da yake ƙimar farashi ya fara daraja, ba za a iya watsi da aikin sa ba. Gyara shine hanyar haɓaka zaruruwan polylactic acid.
Kasar Sin ita ce babbar masana'anta da masu amfani da sinadarai, kuma a cikin 'yan shekarun nan, an ba da fifiko kan bincike kan filayen polylactic acid da aka gyara. Za a iya haɗa fibers na polylactic acid tare da "auduga, lilin, da ulu" na gargajiya na al'ada don yin na'ura da aka saka da kuma saƙa da yadudduka tare da aikin da ya dace, da kuma sauran zaruruwan sinadarai irin su spandex da PTT don yin yadudduka, suna nuna abokantaka na fata, numfashi, da tasirin danshi. An inganta su a fagen kayan yadudduka.
Dongguan Liansheng Nonwoven Fabric Co., Ltd., Mai sana'a na kayan da ba a saka ba da kuma kayan da ba a saka ba, ya cancanci amincewar ku!
Lokacin aikawa: Juni-11-2024