Nkhani - Chifukwa chiyani nsalu za acetate zimadula

M'zaka ziwiri zapitazi, opanga mapulogalamu nthawi zambiri amanena kuti "nsalu ya acetic acid" ndi "nsalu ya triacetic acid", kenako amazungulira mawuwo mozungulira 3D, "sindingakwanitse!" "Imfa yanga! Sindingathe kuigwiritsa ntchito!" Nsalu yamtunduwu ndi yomwe makampani apamwamba kwambiri amaika, ndiye ili kuti?

Gawani mitundu yonse ya zinthu zouma za acetic acid nthawi yomweyo, muli kuti, ndipo pakupanga zovala, timapangitsa nsalu za acetic acid kukhala zodula kwambiri? Gwiritsani ntchito bwino.

1. Asidi wa aceticnsalu
Ulusi wa Acetate ndi mtundu wa ulusi wopangira, ndi ulusi wopangidwa ndi theka-synthetic, ndi cellulose ndi acetic anhydride reaction kuti apange ulusi wa acetate, kenako ulusi wa acetate wopota umapangidwa. Ulusi wa ACETATE, womwe umadziwikanso kuti nsalu ya acetate, ndiko kuti, anthu nthawi zambiri amanena kuti nsalu ya acetic acid, yomwe imadziwikanso kuti nsalu ya acetate, yomwe imadziwikanso kuti Yasha, ndi homophone yachi China ya acetate ya Chingerezi.

Ulusi wa acetate ukhoza kugawidwa m'mitundu iwiri ya ulusi wa acetate ndi ulusi wa acetate itatu. Kodi kusiyana pakati pa viniga awiri ndi atatu ndi kotani?

(1) Viniga itatu ndi mtundu wa acetate, wopanda hydrolysis, ndipo kuchuluka kwake kwa esterification kumakhala kwakukulu. Chifukwa chake, kuwala ndi kutentha zimakhala zolimba, utoto wake ndi wochepa, ndipo kuchuluka kwa chinyezi (komwe kumadziwikanso kuti moisture recover rate) kumakhala kochepa.
(2) Viniga awiri ndi mtundu wa acetate wopangidwa pambuyo pa hydrolysis pang'ono, ndipo kuchuluka kwa esterification yake ndi kotsika kuposa kwa viniga atatu. Chifukwa chake, mphamvu ya kutentha si yabwino ngati viniga atatu, mphamvu ya utoto ndi yabwino kuposa viniga atatu, ndipo kuchuluka kwa chinyezi kumayamwa kuposa viniga atatu.

2. Nsalu ya asidi ya Triacetic
Triacetate nthawi zambiri imagwiritsidwa ntchito popanga mafashoni athu. Masiku ano, timayang'ana kwambiri nsalu ya triacetate yomwe ndi ya nsalu yabwino ya acetic acid, kotero triacetate kuwonjezera pa yokwera mtengo, yokwera mtengo, komanso yokwera mtengo ~ thupi lonse lili ndi zabwino ~

Triacetate, yotchedwa SOALON, imachokera ku mitengo ya conifer yomwe imakula ku Canada ndi Alaska. Ndi ulusi wopangidwa pang'ono, womwe unapangidwa ndi kampani ya Mitsubishi Rayon ku Japan, mtundu watsopano wa nsalu zachilengedwe komanso zapamwamba, zokhala ndi kufewa komweko ngati ulusi wachilengedwe, koma zotsatira zake zimafanana ndi ulusi wopangidwa.

Ulusi wa aseteti mu ndondomeko ya esterification, digiri ya esterification ndi yoposa 2.7, imatchedwa ulusi wa triacetate, ndipo nsalu yopangidwa ndi ulusi wa triacetate imatchedwa nsalu ya triacetate.

3. PK yokhala ndi ulusi wachilengedwe ndi ulusi wopangidwa ndi anthu

Mawonekedwe ndi kuwala kwa ulusi wa triacetate kuli kofanana ndi kwa silika wa mulberry. Kumva kufewa ndi kusalala kuli kofanana ndi kwa silika wa mulberry, ndipo mphamvu yake yeniyeni ndi yofanana ndi ya silika wa mulberry, kotero palibe cholakwika mu silika wouma ndi wa mulberry. Khalidwe lake ndilakuti mtengo wa ulusi wachilengedwe wakhala ukukwera m'zaka zaposachedwa, ndipo triacetic acid yakhala njira yabwino yolowera m'malo mwake.

Chifukwa chake, palibe kufooka kwachilendo ndi silika. Khalidwe lake ndilakuti mtengo wa ulusi wachilengedwe wakhala ukukwera m'zaka zaposachedwa, ndipo triacetic acid yakhala njira yabwino yolowa m'malo mwake.

Mapointi opambana:
(1) Nsalu ya silika yokhala ndi mabakiteriya, fumbi ndipo imatha kutsukidwa mouma, koma si yophweka kupanga magetsi osasunthika, si yophweka kuyamwa fumbi mumlengalenga, ndipo palibe nsalu ya silika yosavuta kudya, yosavuta kusamalira.
(2) Ili ndi thermoplasticity yabwino, mawonekedwe ake ndi osavuta kukonza, poyerekeza ndi hemp, si osavuta kukwinya, ndi ntchito yoyamwa chinyezi ya nsalu, nthawi yomweyo, imakhala ndi dzanzi, komanso kuzizira ikavala.
(3) Ndi chitonthozo cha ulusi wachilengedwe, izi ndizabwino kuposa ulusi wopangidwa. Nthawi yomweyo, kulimba kwa ulusi wa viscose kumakhala bwino, komanso kosavuta kupaka utoto, ndipo kufulumira kwa utoto kumakhala kwakukulu.

4. Kugwiritsa ntchito ndi malo a nsalu ya acetic acid popanga zovala

Mtengo wa nsalu ya acetic acid ndi wokwera mtengo, zasankhidwa kugwiritsa ntchito zovala zapamwamba, ndi satin ina, kapena zinthu za TR sizingasinthidwe, malinga ndi lamba wamtengo wa kampani, kuti muwone ngati ndizoyenera mtunduwo.

(1) Kapangidwe ka mafashoni --diresi

Nsalu ya acetic acid yochitiradiresi lopendekera, ndi njira ya ace, ndipo tikhoza kukhala ndi njira zosiyanasiyana zotanthauzira malinga ndi kusiyana kwa nsalu, komanso kalembedwe ka nsalu.

Mtundu: Ssheena
Zosakaniza: triacetate 82%, ethylene 18%)

(2) Kapangidwe ka mafashoni -- mathalauza
Kapena mwambi wakale: kapangidwe ka mathalauza, sikungalekanitsidwe ndi m'lifupi ndi kupendekera kwa nsalu. Zinthu za asidi ya acetic ndizofanana, samalani ndi kumverera kwa satin kwa asidi ya acetic, komanso zidzagwirizana ndi chodabwitsa.