Maƙallin yadi wani abu ne na polymer wanda ke inganta kamannin yadi, yana ƙara laushi da nauyin yadi, kuma yana ba shi jin tauri. Yana da muhimmin ɓangare na kayan taimako na ƙarewa. Ana iya amfani da yadi da aka yi wa magani sosai a cikin yadi na ado, musamman yadi na labule, yadi na jaka da kuma samar da yadi da aka saka. Haka kuma ana amfani da shi wajen samar da yadi na ciki (fusible interlining da resin interlining).
A cikin ƙasashen da suka ci gaba a yammacin duniya, emulsion polyacrylate mahadi saboda ƙarancin farashinsa, ingantaccen kira, aikin barga da sauran fa'idodi a cikin masana'antar bugu da rini da aka yi amfani da su sosai. Ƙunƙarar da aka fi amfani da ita sune: melamine resin, urea-formaldehyde resin, polyacrylate, polyvinyl acetate, polyvinyl barasa da sitaci, da samfuran da aka gyara.
Abũbuwan amfãni da rashin amfani na stiffeners
sunan | Abũbuwan amfãni | disadvantages |
Melamine resin | Bayan kammala masana'anta stiffness, shrinkage, elasticity, jin suna da kyau, musamman ga roba roba stiffness sakamako yana da kyau. | Bayan kammalawa, masana'anta yana da sauƙin sha danshi, taurin kai da ƙima, raguwar rawaya da ƙarfi, sakin formaldehyde kyauta, da dai sauransu. |
Urea-formaldehyde resin | Bayan kammalawa, masana'anta suna da mafi kyawun taurin kai da ƙananan farashin albarkatun ƙasa. | Bayan kammalawa, masana'anta suna da ƙarancin elasticity, m ji na hannu, babban shrinkage, rashin juriya na wanka da sakin formaldehyde kyauta. Rashin kwanciyar hankali na ajiya na wakilin ƙarewa. |
Polyacrylates da polyvinyl acetates | Yana da halayen juriya na haske, juriya na tsufa kuma babu rawaya. Sauƙi don haɗawa, kwanciyar hankali mai kyau, baya samar da formaldehyde kyauta. Tasiri mai ƙarfi yana da kyau, musamman don ƙirar fiber cellulose stiffening ƙarewa. | Daidaitaccen adadin wakili na ƙarshe, tasirin hardening akan yadudduka na roba yana da ƙasa da resin melamine. Bayan kammalawa, masana'anta ba su da elasticity da jin dadi. Polyvinyl acetate yana raguwa kuma yana da ƙarancin juriya na sanyi. |
Alcohol polyvinyl | Yana da kyau rheology kuma zai iya samar da fim tare da babban ƙarfi, wanda yana da tasiri mai kyau akan masana'anta cellulose. | Yana da wuya a ƙasƙanta a ƙarƙashin yanayin yanayi kuma yana iya samar da kumfa mai yawa a cikin ruwa. Wakilin ƙarewa a cikin masana'anta bayan zafi yana da sauƙi don yin laushi da zubar da jini, rashin wankewa mara kyau. |
Gyaran da aka gyara | Yana da sauƙi don samun albarkatun kasa, ƙananan farashi, maras lalacewa, mai sauƙi don amfani, biodegradable, kuma zai iya sa masana'anta suyi tasiri mai kyau. | Bayan kammalawa, ƙarancin masana'anta yana raguwa tare da danshi, kuma yana da sauƙi don lalacewa kuma ya zama m. Rashin juriya na wanki, mummunan jin hannu, da rashin ƙarfi. |
Tsara mahimman maki
Tsarin gasassun yana da tasiri mafi girma a kan formaldehyde akan farfajiyar masana'anta da taurin masana'anta bayan kammalawa. Tare da karuwar lokacin gasasshen da zafin jiki na gasasshen, taurin yana ƙaruwa kuma abun cikin formaldehyde akan masana'anta yana raguwa sosai. Lokacin da ake sarrafa tsarin sarrafawa a 200 ° C × 60s, formaldehyde akan masana'anta na iya kaiwa ƙasa da 75ppm.
Wannan shi ne saboda tare da haɓaka aikin bushewa, ƙetare na ƙwanƙwasa ya fi dacewa, don haka ƙurawar masana'anta bayan kammalawa yana ƙaruwa. A gefe guda, formaldehyde a kan masana'anta na gamawa yana da sauƙi don canzawa a ƙarƙashin yanayin zafi mai zafi, yana haifar da ƙananan formaldehyde akan masana'anta na ƙarshe.
Akwai wani yanayi mai juyewa tsakanin sinadarin tauri da formaldehyde. Da canjin yanayin waje (kamar: zafin jiki, danshi, pH, da sauransu), formaldehyde zai rabu akai-akai. Bayan kammala samfurin masana'anta na farko, formaldehyde zai ragu, tare da tsawaita lokacin ajiya, formaldehyde zai ƙaru a hankali. Lokacin da lokacin ajiya ya kai kwanaki 10-12, za a daidaita zane na formaldehyde na asali.
Idan an adana shi a cikin yanayin da ba shi da iska, formaldehyde da aka fitar za ta ƙara taruwa, za a sami raɗaɗi da zafi. An ba da shawarar cewa masana'anta bayan kammalawa tare da resin hardening ya kamata a adana su a wuri mai kyau.
Sharuɗɗan da suka dace na kowane nau'in stiffener
- Tushen auduga bayan kammala taurin: polyvinyl barasa> polyacrylate> sitaci> melamine guduro.
- Polyester masana'anta bayan kammala taurin: polyvinyl barasa> sitaci> melamine guduro> polyacrylate.
- Saurin wankewa: polyacrylate> barasa na polyvinyl> guduro melamine> sitaci.
- Polyvinyl barasa a auduga da polyester yadudduka bayan kammala taurin sun fi girma, amma jin ya fi muni. A cikin masana'anta polyester ba ta da ƙarfi kamar resin melamine, saurin wankewa shine na biyu kawai ga polyacrylate. Sitaci kammala masana'anta taurin yana da kyau, na biyu kawai zuwa barasa na polyvinyl, amma saurin wankewa ba shi da kyau.
- Melamine guduro gama polyester masana'anta, taurin sakamako ne in mun gwada da kyau, kuma lokacin farin ciki ji da elasticity ne mafi alhẽri. Amma a cikin aikin ƙarewar auduga ba shi da kyau, kuma bayan kammala masana'anta zai saki formaldehyde. Polyacrylate a cikin auduga a kan m karewa sakamako ne mafi alhẽri, a cikin polyester masana'anta gama sakamako ba manufa, amma wanke azumi ne mafi kyau.
Ƙarin bayani game da SINOYQX modified melamine formaldehyde resin, da fatan za a tuntuɓe mu ta imel: [email protected] , ko a yi mana magana a: +86-28-8411-1861.
Ana sake buga wasu hotuna da rubutu daga Intanet, kuma haƙƙin mallaka na ainihin marubucin ne. Idan akwai wani cin zarafi, da fatan za a tuntuɓe mu don sharewa.