Uphononongo lokuthelekisa ukusebenza kwe-Epoxy Toughening ye-CTBN, i-ATBN kunye ne-HTN

Izinto ezibalulekileyo ekufuneka ziqwalaselwe

• I-CTBN iphucula kakhulu ukuqina kwe-epoxy, inyusa amandla ombane ngaphezulu kwe-692%. Oku kuyenza ibe yeyona ndlela ilungileyo kwiizicelo ezininzi.
• Ukusebenzisa isixa esifanelekileyo se-CTBN, malunga ne-20%, kuphucula ukuguquguquka kunye nokuqina ngaphandle kokuphazamisa amandla. Ukuvavanya ubungakanani obahlukeneyo kunokukhokelela kwiziphumo ezilungileyo.
• I-CTBN ifumaneka ngokubanzi kwaye kulula ukuyixuba ne-epoxy, nto leyo eyenza ukuba ibe lukhetho olusebenzayo kwiiprojekthi ezahlukeneyo. I-ATBN okanye i-HTTPN kwiimfuno ezithile, kodwa i-CTBN ithandwa kakhulu.

Uphononongo lokuthelekisa ukusebenza kwe-Epoxy Toughening ye-CTBN, i-ATBN, kunye ne-HTN

Yintoni i-CTBN?

I-CTBN imele i-butadiene acrylonitrile epheliswe yi-carboxyl. Le nto yirabha engamanzi esetyenziswa zizazinzulu ukwenza ii-epoxy resins zibe lukhuni. I-CTBN inamaqela e-carboxyl eziphelweni zeetyathanga zayo. La maqela anceda I-CTBN isabela ngee-epoxy resins. I-CTBN idla ngokuba nobunzima beemolekyuli phakathi kwama-2000 nama-3000. Abantu badla ngokukhetha i-CTBN kuba iphucula ukuguquguquka kunye namandla empembelelo ye-epoxy. KwiSifundo sokuQhathanisa kwi-Epoxy Toughening Performance ye-CTBN, abaphandi bafumanise ukuba i-CTBN inokunyusa ukumelana nempembelelo yee-resin ze-epoxy ngobuninzi.

Yintoni i-ATBN?

I-ATBN imele i-amino-terminated butadiene acrylonitrile. Le nto lolunye uhlobo lwerabha engamanzi. I-ATBN inamaqela e-amino eziphelweni zeetyathanga zayo. La maqela anceda i-ATBN ukuba isabele ngee-epoxy resins ngendlela eyahlukileyo kune-CTBN. I-ATBN ayinayo ubunzima be-molecular obuchaziweyo kwizifundo ezininzi. Abantu basebenzisa I-ATBN yokuphucula ukuqina kwe-epoxy, kodwa isebenza kakuhle kwiimeko ezikhethekileyo. KwiSifundo sokuQhathanisa kwi-Epoxy Toughening Performance ye-CTBN, i-ATBN, kunye ne-HTPN, i-ATBN ibonisa iziphumo ezilungileyo kwezinye izicelo.

Yintoni i-HTTPN?

I-HTPN imele i-hydroxyl-terminated polybutadiene nitrile. Le nto ikwayirabha engamanzi. I-HTPN inamaqela e-hydroxyl eziphelweni zeetyathanga zayo. La maqela anceda i-HTPN ukuba iqhagamshelane nee-epoxy resins. I-HTPN ayixhaphakanga kangako kune-CTBN kunye ne-ATBN. Abantu basebenzisa i-HTPN xa befuna iimpawu ezikhethekileyo kwii-epoxy resins zabo. I-HTPN inokwenza i-epoxy ibe bhetyebhetye kwaye ibe nzima, kodwa ayithandwa njenge-CTBN.

Ezi Modifiers Ziyenza Njani I-Epoxy Iqine?

I-CTBN, i-ATBN, kunye I-HTTPN Zonke ezi zinto zinceda ekwenzeni ii-epoxy resins zibe lukhuni. Zikwenza oku ngeendlela ezimbalwa eziphambili:

• I-CTBN yenza iibhondi zeekhemikhali kunye ne-epoxy. Amaqela e-carboxyl kwi-CTBN asabela kunye namaqela e-epoxy ukuze enze unxibelelwano oluqinileyo lwe-ester.
• Ngexesha lokunyibilika, i-CTBN iyahlukana ibe ziingceba ezincinci zerabha ngaphakathi kwi-epoxy. Le nkqubo ibizwa ngokuba kukwahlukana kwe-micro-phase. Ezi ngceba zinceda ekufunxeni amandla xa i-epoxy ibetha okanye igoba.
• Umphezulu weengqayi zerabha unceda i-epoxy inamathela ngcono kwezinye izinto, ezifana neefayibha zekhabhoni. Oku kudala unxibelelwano oluqinileyo kwaye kunceda i-epoxy ukuba imelane nokuqhekeka.
• I-ATBN kunye ne-HTPN zisebenza ngeendlela ezifanayo, kodwa amaqela azo okugqibela (i-amino okanye i-hydroxyl) ayatshintsha indlela ezisabela ngayo kwi-epoxy. Oku kunokuchaphazela iimpawu zokugqibela ze-resin.

Abantu badla ngokusebenzisa ubungakanani obahlukeneyo bezi modifiers ukuze bafumane iziphumo ezilungileyo. Umzekelo:

• Ukongeza i-CTBN engaphezulu kunokunyusa ubushushu apho i-epoxy iphilisa khona. Kunokunciphisa namandla afunekayo kwimpendulo.
• Ukuba umntu wongeza i-CTBN eninzi kakhulu, i-epoxy inokulahlekelwa ngamandla athile. Ukuqina okungcono kudla ngokuba malunga ne-20% ye-CTBN.
• Kwi-20% CTBN, i-epoxy yolula ngakumbi ngaphambi kokuba iqhekeke. Oku kuthetha ukuba inokufunxa amandla amaninzi kwaye akunakwenzeka ukuba iqhekeke.

Icebiso: Ubungakanani obufanelekileyo bokuguqula buxhomekeke kumsebenzi. Ukuba kuncinci kakhulu kusenokungayiqinisi ngokwaneleyo i-epoxy. Ukuba kuninzi kakhulu kunokwenza i-epoxy ibe buthathaka.

Uphononongo lokuthelekisa malunga nokusebenza kwe-Epoxy Toughening ye-CTBN lubonisa ukuba i-CTBN inika ulungelelwaniso olungcono lokuqina kunye namandla kwiindlela ezininzi zokusetyenziswa. I-ATBN kunye ne-HTTPN ingasebenza kakuhle kwiimfuno ezizodwa, kodwa i-CTBN lolona khetho luqhelekileyo.

Indlela i-CTBN, i-ATBN, kunye ne-HTPN ezisebenza ngayo kwi-Epoxy Resins

Indlela Yokuqinisa i-CTBN

I-CTBN itshintsha indlela eziziphatha ngayo ii-epoxy resins. Izazinzulu zongeza i-CTBN kwi-epoxy, kwaye yenza amasuntswana amancinci erabha ngaphakathi kwe-resin. La masuntswana anceda i-epoxy ukuba ifunxe amandla xa itshayiswa okanye igobile. Amaqela e-carboxyl eziphelweni zeetyathanga ze-CTBN asabela kwi-epoxy, nto leyo eyenza amakhonkco aqinileyo. Le mpendulo idala inethiwekhi ebamba amasuntswana erabha endaweni yawo. Isiphumo yi-epoxy egoba ngakumbi ngaphambi kokuba iqhekeke. Abaphandi abaninzi kwiSifundo sokuQhathanisa malunga Ukusebenza kwe-Epoxy Toughening ye-CTBN bafumanise ukuba i-CTBN inika umxube ongcono wokuqina namandla.

Qaphela: I-CTBN isebenza kakuhle kuba isasazeka ngokulinganayo kwi-epoxy kwaye yenza amakhonkco aqinileyo.

Indlela Yokuqinisa i-ATBN

I-ATBN isebenzisa amaqela e-amino ukuze isabela kwii-epoxy resins. La maqela anceda i-ATBN ukuba iqhagamshelane ne-epoxy ngexesha lokunyanga. I-ATBN ikwadala amasuntswana anjengerabha, kodwa indlela edibana ngayo yahlukile kwi-CTBN. Amaqela e-amino angenza i-epoxy cure ikhawuleze. I-ATBN iphucula ukuqina, kodwa isebenza kakuhle kwiimeko ezikhethekileyo. Abanye abasebenzisi bakhetha i-ATBN xa befuna i-epoxy cure ekhawulezayo okanye i-epoxy bonding ekhethekileyo.

• I-ATBN ingenza i-epoxy ibe bhetyebhetye ngakumbi.
• Isenokunganiki amandla ombane angaphezulu kune-CTBN.

Indlela Yokuqinisa i-HTTPN

I-HTPN isebenzisa amaqela e-hydroxyl ukubopha ne-epoxy. La maqela anceda i-HTPN ukuba idibane kakuhle ne-resin. I-HTPN yenza amasuntswana afana nerabha, njenge-CTBN kunye ne-ATBN. Amaqela e-hydroxyl angenza i-epoxy ibe bhetyebhetye ngakumbi. I-HTPN ayixhaphakanga kangako, kodwa iyanceda xa abasebenzisi befuna iimpawu ezikhethekileyo. I-HTPN inokuphucula ukuqina, kodwa isenokungasebenzi kakuhle njenge-CTBN yokusetyenziswa ngokubanzi.

Uphononongo lokuthelekisa ukusebenza kwe-Epoxy Toughening ye-CTBN: Umahluko woomatshini kunye noweNzalo

Uthelekiso lweePropati zoMatshini

I-CTBN, i-ATBN, kunye ne-HTPN nganye itshintsha iipropati zoomatshini zee-epoxy resins ngeendlela ezahlukeneyo. I-CTBN ivelele ngokukwazi kwayo ukunyusa ukuqina kunye nokuguquguquka. Xa i-CTBN yongezwa, i-epoxy inokufunxa amandla amaninzi ngaphambi kokuba iqhekeke. Oku kuthetha ukuba izinto azikwazi ukuqhekeka phantsi koxinzelelo. I-ATBN ikwaphucula ukuqina, kodwa ayongezi amandla okubetha njenge-CTBN. I-HTPN inceda ukwenza i-epoxy iguquguquke ngakumbi, kodwa ayihambelani nokuqina okunikezelwa yi-CTBN.

Abaphandi kwiSifundo sokuQhathanisa kwi-Epoxy Toughening Performance ye-CTBN bafumanise ukuba ii-epoxy resins eziguqulwe yi-CTBN zibonisa ukonyuka okukhulu kwamandla okuchaphazeleka. Amasuntswana erabha enziwe yi-CTBN anceda i-epoxy igobe endaweni yokuqhekeka. I-ATBN kunye ne-HTN zisebenza kakuhle kwiimfuno ezizodwa, kodwa i-CTBN inika ibhalansi engcono kakhulu kwiindlela ezininzi zokusetyenziswa.

Ukuhambelana ne-Epoxy

Indlela i-modifier nganye exubana ngayo ne-epoxy ibalulekile. Ukuhambelana okuhle kuthetha ukuba i-modifier isasazeka ngokulinganayo kwaye yenza unxibelelwano oluqinileyo ne-resin.

• I-CTBN yonyusa ubushushu be-cure peak (Tp) kwiifomyula ze-epoxy resin.
• I-CTBN inciphisa i-enthalpy ye-reaction iyonke (ΔH), oko kuthetha ukuba i-reaction isebenzisa amandla amancinci.
• Iinkqubo eziguqulwe yi-CTBN zibonisa i-Tp ephezulu (umzekelo, i-C25: i-Tp = 167.4 °C) kunye ne-ΔH ephantsi (umzekelo, i-ΔH = 264.6 J g−1) xa kuthelekiswa ne-epoxy ecocekileyo.
• Ukongeza i-CTBN kukhokelela ekwandeni okukhulu kwe-viscosity, nto leyo echaphazela indlela ekulula ngayo ukuyicubungula i-epoxy.
• Ixesha lejeli le-epoxy eguqulweyo ye-CTBN lide (malunga nemizuzu eli-18) kunele-epoxy ecocekileyo.
• Ubukho be-h-BN abutshintshi kakhulu ixesha lejeli, ngoko ke i-CTBN isenokwenza ukusebenza okulungeleleneyo.

I-CTBN isebenza kakuhle kwiintlobo ezininzi zee-epoxy resins. Oku kuyenza ibe lukhetho oludumileyo kwi-Comparative Study on Epoxy Toughening Performance ye-CTBN. I-ATBN kunye ne-HTPN nazo zinokuxutywa ne-epoxy, kodwa iziphumo zazo ekugugeni kunye neempawu zokugqibela zahlukile.

Ukucubungula kunye nokuphatha

Ukucubungula nokuphatha kubalulekile kuye nabani na osebenzisa ezi modifiers. I-CTBN itshintsha indlela esebenza ngayo i-epoxy ngexesha lokuxuba nokunyanga.

Indlela yokuqinisa ye-CTBN ibandakanya ukusabela ngexesha lokwenziwa kwe-pre-polymer, apho i-CTBN isabela kunye ne-epoxy ukwenza i-block copolymer. Le nkqubo iphucula iipropati zoomatshini ze-composite ngokudala isigaba serabha esisasazekileyo esiphucula ukuqina.

I-CTBN ichaphazela kakhulu i-viscosity kunye nexesha le-gel le-epoxy, kunye nokwanda okuphawulekayo kwe-viscosity njengoko umthwalo we-CTBN unyuka, nto leyo eyenza kube nzima ukucubungula. Ixesha le-gel le-epoxy ecocekileyo limalunga nemizuzu eli-18, kodwa ukongeza i-CTBN kwandisa eli xesha ngenxa yokwanda kwe-viscosity kunye notshintsho lwe-phase morphology.

Abantu abasebenzisa i-CTBN kufuneka bayixube kakuhle ukuze bafumane iziphumo ezilungileyo. I-viscosity ephezulu inokwenza ukuthulula nokusasaza kube nzima. Ixesha elide lejeli lithetha ukuba abasebenzisi banexesha elingakumbi lokusebenza ne-epoxy ngaphambi kokuba iqine. I-ATTBN kunye ne-HTN zisenokungatshintshi i-viscosity kunye nexesha lejeli njenge-CTBN, ngoko ke kunokuba lula ukuyiphatha kwezinye iimeko.

Ixabiso kunye nokuFumaneka

I-CTBN kulula ukuyifumana nokuyithenga. Iinkampani ezininzi zenza i-CTBN kuba isebenza kakuhle nee-resin ezahlukeneyo ze-epoxy. Olu luhlu olubanzi lokufumaneka yenza i-CTBN ibe lukhetho oluphezulu kwimizi-mveliso. Uzinzo lwe-CTBN kwi-epoxy luthetha ukuba iimveliso ezenziwe ngayo ziziphatha ngendlela efanayo ngalo lonke ixesha. I-ATBN kunye ne-HTPN nazo ziyafumaneka, kodwa zinokubiza ngaphezulu okanye kube nzima ukuzifumana. Abanye abasebenzisi bakhetha i-ATBN okanye i-HTPN kwimisebenzi ekhethekileyo, kodwa uninzi lukhetha i-CTBN yokusetyenziswa ngokubanzi.

Uphononongo lokuthelekisa malunga nokusebenza kwe-Epoxy Toughening ye-CTBN lubonisa ukuba i-CTBN yeyona modifier ikhethwayo ngezizathu ezininzi. Inika iipropati ezinamandla zoomatshini, ukuhambelana okuhle, kunye nokufikelela lula kubathengi.

Kutheni i-CTBN isoloko iyi-Modifier ekhethwayo

Iingenelo eziphambili ze-CTBN

I-CTBN ivelele njengokhetho oluphezulu lokuqinisa ii-epoxy resins. Abaphandi abaninzi kunye neengcali zoshishino bakhetha i-CTBN kuba ineenzuzo ezininzi ezibalulekileyo:

• I-CTBN ixubana kakuhle nee-epoxy resins ezingacocwanga. Le mpawu yenza kube lula ukongeza i-CTBN kwi-epoxy ngaphambi kokuba icubungulwe.
• Ngexesha lenkqubo yokunyanga, i-CTBN iyahlukana ibe ziinxalenye ezincinci, ezingqukuva. Ezi nxalenye zinceda i-epoxy ukuba ifunxe amandla kwaye imelane nokuqhekeka.
• I-CTBN isebenza njenge-plasticizer. Yehlisa ubushushu be-glass transition (Tg) ye-epoxy. Olu tshintsho lwenza i-epoxy ibe bhetyebhetye ngakumbi kwaye iphucule ukumelana kwayo nempembelelo.

I-CTBN inceda ekudaleni izinto ze-epoxy ezomeleleyo neziguquguqukayo. Ezi mpawu zenza i-CTBN ibe lukhetho oludumileyo kwiintlobo ngeentlobo zezicelo, ukusuka kulwakhiwo ukuya kwi-elektroniki.

Imida ye-CTBN

I-CTBN ikwanazo nezinye iingxaki ekufuneka abasebenzisi baziqwalasele. Uphando lubonisa ukuba i-CTBN inokubangela imingeni emikhulu ye-viscosity. Xa i-CTBN yongezwa, umxube uba mkhulu kakhulu. Oku kwanda kwe-viscosity kunokwenza kube nzima ukuxuba kwezinye izongezo. I-CTBN ikwakhokelela kwixesha elide lejeli ngexesha lenkqubo yokucola. Ixesha elide lejeli lithetha ukuba i-epoxy ithatha ixesha elide ukuqina, nto leyo enokucothisa imveliso. Ezi zinto zinokuthintela indlela kunye nendawo ezisetyenziswa kuyo ii-epoxies eziguqulwe yi-CTBN. Abasebenzisi kufuneka balinganisele iingenelo zokuqina kunye nokuguquguquka kunye nemingeni ekucutshungulweni.

Ukukhetha iModifier efanelekileyo yesicelo sakho

Eyona ndlela ilungileyo yokusebenzisa ngokubanzi

I-CTBN isebenza kakuhle kwiimfuno ezininzi zokuqinisa i-epoxy. Iinjineli ezininzi kunye nososayensi bakhetha i-CTBN kuba iphucula amandla kunye nokuguquguquka. I-CTBN isabela kunye ne-epoxy ukwenza i-block copolymer. Le mpendulo idala iibhondi eziqinileyo kwi-interface, enceda ukuba izinto zixhathise ukuqhekeka. Xa i-CTBN isetyenziswa kwinqanaba elifanelekileyo, njenge-25%, i- i-epoxy ingabonisa ukunyuka kwe-33% ngamandla okucheba okutyhafa kunye nokunyuka kwama-528% kwamandla okubetha. I-CTBN ikwanceda kwiinhlanganisela ezine-carbon fiber ngokusebenza kwizikali ezahlukeneyo ukwenza izinto zibe nzima. Ezi mpawu zenza i-CTBN ibe lukhetho oluthembekileyo kwiiprojekthi ezininzi.

Ixesha lokuqwalasela i-ATBN okanye i-HTTPN

Ezinye iiprojekthi zifuna iipropati ezikhethekileyo. I-ATBN inokunceda xa unyango lukhawuleza Kubalulekile okanye xa umsebenzisi efuna ukuguquguquka okungakumbi. I-HTPN isebenza kakuhle ukuba injongo kukwandisa ukuguquguquka ngaphandle kokulahlekelwa ngamandla amaninzi. Zombini i-ATBN kunye ne-HTPN zinokuba luncedo kwizicelo ezizodwa, ezifana ne-elektroniki okanye ii-coating ezifuna ukuthamba ngakumbi. Abasebenzisi kufuneka bajonge iimfuno zemveliso yokugqibela ngaphambi kokuba bakhethe ezi modifiers.

Iingcebiso zokukhetha i-Agent Toughening

Ukukhetha i-modifier efanelekileyo kufuna ukucingisiswa ngononophelo. Abantu abaninzi benza iimpazamo ngokukhetha ngokusekelwe kumagama adumileyo okanye ngokusebenzisa i-modifier eninzi kakhulu. Abanye bayalibala ukujonga indlela i-modifier exubana kwaye isasazeka ngayo kwi-epoxy. Nazi ezinye iingcebiso:

• Jonga indlela i-modifier echaphazela ngayo ukucubungula, njengokuxuba kunye nokuphilisa.
• Vavanya ubungakanani obahlukeneyo ukuze ufumane ibhalansi engcono yokuqina kunye namandla.
• Jonga indlela i-modifier esasazeka ngayo kwi-epoxy.
• Musa ukulindela ukuba kubekho uhlengahlengiso olunye oluza kusombulula yonke ingxaki.
• Soloko ufanisa i-modifier neemfuno zeprojekthi.

Icebiso: Uvavanyo novavanyo olucokisekileyo lukhokelela kwiziphumo ezingcono kunye nokungamangalisi okumbalwa.

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I-CTBN inika ii-epoxy resins ukuqina okuqinileyo kunye nokucutshungulwa okulula. Uninzi lwabasebenzisi lukhetha i-CTBN kwiiprojekthi eziqhelekileyo. I-ATBN kunye ne-HTN zisebenza ngcono kwiimfuno ezizodwa. Abasebenzisi kufuneka basoloko bejonga iimfuno zeprojekthi yabo zokuqina, ukuphathwa, kunye neendleko ngaphambi kokuba bakhethe i-modifier.

Icebiso: Ukukhetha okulungileyo kukhokelela kwiziphumo ezingcono.

FAQ

Imele ntoni i-CTBN?

I-CTBN ithetha i-butadiene acrylonitrile epheliswe yi-carboxyl. Izazinzulu ziyayisebenzisa ukwenza ii-epoxy resins zibe lukhuni kwaye ziguquguquke ngakumbi.

Ngaba i-CTBN ingaxutywa nayo nayiphi na i-epoxy resin?

Uninzi lwee-epoxy resins zisebenza kakuhle kwi-CTBN. Abasebenzisi kufuneka baqale bavavanye iqela elincinci kuqala ukuze bajonge ukuba lixutywe kakuhle na kwaye lisebenza kakuhle na.

Ngaba i-CTBN iyawutshintsha umbala we-epoxy?

I-CTBN ayitshintshi umbala kakhulu. Ezinye ii-resin zinokubonakala zifu kancinci emva kokufaka i-CTBN, kodwa isiphumo sincinci.