Wakilin Nucleating

Wakilcin sulhu ya dace da robobin da ba su cika cika ba kamar su polyethylene da polypropylene. Ta hanyar sauya dabi'un kurarrakin murfi, zai iya hanzarta saurin kristallization, kara yawan lu'ulu'u da inganta karamcin girman hatsin lu'ulu'u, ta yadda zai rage zagayen gyare-gyaren da kuma inganta gaskiya da farfajiyar Sabbin kayan aiki na zahiri da na injina. kaddarorin kamar sheki, ƙarfi mai ƙarfi, tsauri, zafin jiki na murdiya mai zafi, juriya mai tasiri, da juriya da rarrafe.

Dingara wakili mai ƙarewa na iya ƙara saurin ƙirar ƙarfe da digiri na ƙirar ƙarfe na samfurin polymer, ba wai kawai zai iya haɓaka aiki da saurin gyare-gyare ba, amma kuma yana rage abubuwan da ke faruwa na ƙwanƙwasa abu na biyu, ta haka yana inganta daidaitaccen yanayin samfurin .

Tasirin wakili mai ragi a kan aikin samfur

Additionarin wakilin nukiliya yana inganta kristaline na kayan polymer, wanda ke shafar kayan aiki na jiki da na sarrafa kayan polymer.

01 Tasiri kan ƙarfin zafin jiki da ƙarfin lankwasawa

Don polymal-crystalline ko semi-crystalline polymers, ƙari na wakili na yin amfani da abu yana da amfani don ƙara haɓakar polymer, kuma galibi yana da ƙarfin ƙarfafawa, wanda ke ƙaruwa da ƙarfin polymer, ƙarfin zafin jiki da ƙarfin lankwasawa, da yanayin , amma A elongation at break kullum yana raguwa.

02 Tsayayya ga ƙarfin tasiri

Gabaɗaya magana, thearfin ƙarfin ƙarfin ƙarfin ƙarfin ƙarfin ƙarfin ƙarfin ƙarfin tasirin tasirin tasirin abu yana iya zama ɓacewa. Koyaya, ofarin wakilin nucleating zai rage girman spherulite na polymer, don haka polymer ya nuna juriya mai tasiri mai kyau. Misali, aara wakilin kwalliya mai dacewa zuwa kayan PP ko PA na iya ƙara ƙarfin tasirin kayan ta 10-30%.

03 Tasiri kan aikin gani

Maganin gargajiya na gargajiya irin su PC ko PMMA galibi masu ba da amo ne, yayin da masu lu'ulu'u ko polymer masu ƙyallen-fure suke gaba ɗaya. Additionarin abubuwan da ke tattare da nukiliya na iya rage girman hatsin polymer kuma suna da halaye na tsarin microcrystalline. Yana iya sa samfurin ya nuna halaye na translucent ko kuma bayyane gaba ɗaya, kuma a lokaci guda na iya inganta ƙarshen aikin samfurin.

04 Tasiri kan aikin sarrafa polymer

A cikin aikin gyaran polymer, saboda narkewar polymer yana da saurin sanyaya sauri, kuma sarkar kwayar polymer ba cikakke take ba, tana haifar da raguwa da nakasawa yayin aikin sanyaya, kuma polymer din da ba a cika cika ba yana da cikakken yanayin kwanciyar hankali. Har ila yau, yana da sauƙi don raguwa a cikin girma yayin aiwatarwa. Dingara wani wakili mai jujjuyawa na iya saurin saurin kristalization, ya rage lokacin gyare-gyaren, haɓaka ƙimar samarwa da rage ƙimar aikin bayan samfurin.

Nau'in wakili na narkewa

01 α crystal nucleating wakili

 Yana yafi inganta nuna gaskiya, sheki mai sheki, tsaurin ido, zafin yanayin murdiya mai zafi, da dai sauransu. Hakanan ana kiranta wakili na gaskiya, mai haɓaka watsawa, da mai sanya ƙarfi. Mafi mahimmanci sun haɗa da dibenzyl sorbitol (dbs) da abubuwan da ke tattare da su, gishiri mai ƙanshi mai ƙanshi, maye gurbin benzoates, da dai sauransu, musamman dbs nucleating wakili mai haske shine aikace-aikacen gama gari. Alpha crystal nucleating zasu iya kasu kashi biyu a cikin kwayoyin, kwayoyin da macromolecules gwargwadon tsarin su.

02 Abun Gari

Abubuwan da ke tattare da kwayoyin halitta sun hada da talc, calcium oxide, carbon black, calcium carbonate, mica, pigment inorganic, kaolin da kuma sauran abubuwan kara kuzari. Waɗannan su ne farkon wakilai masu arha da amfani masu haɓaka, kuma mafi yawan bincike da amfani da ƙwayoyin nucleating sune talc, mica, da dai sauransu.

03 Tsarin halitta

Carboxylic acid salts salts: kamar sodium succinate, sodium glutarate, sodium caproate, sodium 4-methylvalerate, adipic acid, aluminum adipate, aluminum tert-butyl benzoate (Al-PTB-BA), Aluminum benzoate, potassium benzoate, lithium benzoate, sodium cinnamate, sodium β-naphthoate, da sauransu. Daga cikin su, alkali karfe ko gishirin aluminium na benzoic acid, da gishirin alminium na tert-butyl benzoate suna da sakamako mafi kyau kuma suna da tarihi mai amfani, amma nuna gaskiya ba shi da kyau.

Garkuwar ruwan ƙarfe na Phosphoric acid: Organic phosphates galibi sun haɗa da gishirin ƙarfe na fosfa da ƙananan fosfofan ƙarfe da hadaddun su. Kamar su 2,2'-methylene bis (4,6-tert-butylphenol) phosphine gishirin aluminum (NA-21). Wannan nau'in wakili mai jujjuyawar yanayi yana dauke da kyakkyawan nuna gaskiya, tsauri, saurin kristalization, da dai sauransu, amma rashin karfin watsawa.

Abubuwan da aka samo daga Sorbitol benzylidene: Yana da tasirin ci gaba mai mahimmanci akan nuna gaskiya, walƙiya mai haske, taurin kai da sauran kaddarorin thermodynamic na samfurin, kuma yana da dacewa mai kyau tare da PP. Nau'in nuna gaskiya ne wanda a halin yanzu ake gudanar da bincike mai zurfi. Wakilin Nucleating. Tare da kyakkyawan aiki da ƙarancin farashi, ya zama mafi haɓaka mai haɓaka wakili mai haɗuwa tare da mafi girma iri-iri da kuma mafi girma samarwa da tallace-tallace a gida da waje. Akwai akasarin dibenzylidene sorbitol (DBS), biyu (p-methylbenzylidene) sorbitol (P-M-DBS), biyu (mai maye gurbin benzal p-chloro) sorbitol (P-Cl-DBS) da sauransu.

High narkewa ma'adinin polymer nucleating wakili: A halin yanzu, akwai galibi polyvinyl cyclohexane, polyethylene pentane, ethylene / acrylate copolymer, da dai sauransu Yana da matalauta hada abubuwa tare da resin polyolefin da kyakkyawan warwatsewa.

agent wakili mai kwalliya:

Manufar shine a sami samfuran polypropylene mai dauke da babban abun lu'ulu'u. Fa'idar ita ce inganta tasirin juriya na samfurin, amma baya ragewa ko ma ya kara zafin yanayin lalacewar yanayin samfurin, don haka ana la'akari da bangarorin biyu masu saɓani na juriya da lalacewar zafin rana.

Nau'in ɗayan isan mahaɗan zobe ne waɗanda aka haɗa tare da tsari iri-iri.

Sauran an hada shi da sinadarin oxides, hydroxides da gishirin wasu sinadarai na dicarboxylic da karafan kungiyar IIA na teburin lokaci-lokaci. Zai iya canza rabo na nau'ikan lu'ulu'u daban-daban a cikin polymer don canza PP.